Automatic door opening and closing device and quality control refrigerating box

Abstract

The utility model discloses an automatic door opening and closing device and a quality control refrigerated container, the automatic door opening and closing device comprises a door plate, a cover plate and a connecting rod mechanism, the door plate is provided with a door opening, and the cover plate covers the door opening; the connecting rod mechanism comprises a left connecting rod and a right connecting rod which are oppositely arranged on the two sides of the cover plate, at least one of the left connecting rod and the right connecting rod is a driving rod, the other connecting rods are driven rods, one ends of the driving rod and the driven rods are rotationally connected with the side wall of the cover plate, and the end, away from the cover plate, of the driving rod is connected with the driving piece. The end, away from the cover plate, of the driven rod is rotationally connected with the door plate, and the driving rod is driven by the driving piece to drive the driven rod to rotate together so as to drive the cover plate to horizontally block or open the door opening. In the door opening and closing process, the cover plate is always parallel to the upper surface of the door plate, and therefore the problem that a traditional door opening and closing mode is poor in sealing performance is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration of quality control products, in particular to an automatic door opening and closing device and a quality control refrigeration box. Background Art

[0002] Quality control samples are a term in pharmaceutical analysis and are often used to validate pharmaceutical analysis methods. They are prepared by adding a known amount of the sample to be tested into a biological medium and need to undergo certification testing to verify that they meet the quality standards required by the experiment or regulation.

[0003] Quality control samples are usually sealed and stored in quality control refrigerators before on-site inspection. To achieve automated testing, a hole is usually opened on the quality control refrigerator for a mechanical gripper to reach into the interior of the quality control refrigerator to take and place quality control samples. At the same time, an automatic door opening and closing device is provided on the hole to close and open the hole. At present, the automatic door opening and closing device provided on the quality control refrigerator is either a rotating door or a sliding door. The corners of the rotating door are prone to wear and tear during rotation, which may lead to cold leakage. The sliding door needs to leave a slide groove, and the sealing is not guaranteed and is prone to cold leakage. Therefore, it is urgent to design an automatic door opening and closing device with strong sealing. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic door opening and closing device, aiming to replace the rotary door opening and closing door and the translational door opening and closing door with a connecting rod type door opening and closing, so as to improve the sealing performance of the automatic door opening and closing device.

[0005] To achieve the above-mentioned purpose, the automatic opening and closing door device proposed by the utility model includes a door panel, a cover plate and a connecting rod mechanism, the door panel is provided with a door opening, and the cover plate is covered on the door opening; the connecting rod mechanism includes a left connecting rod and a right connecting rod relatively arranged on both sides of the cover plate, at least one of the left connecting rod and the right connecting rod is an active rod, and the other connecting rods are driven rods, one end of the active rod and the driven rod are both rotatably connected to the side wall of the cover plate, the end of the active rod facing away from the cover plate is connected to the driving member, and the end of the driven rod facing away from the cover plate is rotatably connected to the door panel, and the active rod drives the driven rod to rotate together under the drive of the driving member, thereby driving the cover plate to translate to block or open the door opening.

[0006] Optionally, the left side link includes a first link and a second link, and the right side link includes a third link and a fourth link, the first link is arranged opposite to the third link, the second link is arranged opposite to the fourth link, and the first link, the second link, the third link and the fourth link constitute a parallelogram linkage mechanism, wherein the fourth link is an active rod, and the first link, the second link and the third link are driven rods.

[0007] Optionally, the door panel is provided with a first side panel and a second side panel which are arranged opposite to each other, the first side panel and the second side panel are arranged behind the door opening, one end of the first connecting rod and the second connecting rod are hinged to the first side panel, the other end of the first connecting rod and the second connecting rod are hinged to the side wall of the cover plate, one end of the third connecting rod is hinged to the second side panel, and the other end of the third connecting rod is hinged to the side wall of the cover plate. The driving member includes a motor, the rotating shaft of the motor is arranged perpendicular to the second side panel, the rotating shaft of the motor is passed through the fourth connecting rod and is fixedly connected to the fourth connecting rod, and the end of the fourth connecting rod away from the motor is rotatably connected to the cover plate.

[0008] Optionally, the first side plate and the second side plate are both provided with a first bearing, and the driven rod is hinged to the corresponding side plate through the first bearing; second bearings are provided on both sides of the cover plate, and each connecting rod is hinged to the cover plate through the second bearing.

[0009] Optionally, the first bearing and the second bearing are rolling bearings or sliding bearings.

[0010] Optionally, a first gasket is arranged between the driven rod and the corresponding side plate, and a second gasket is arranged between the active rod and the driven rod and the cover plate.

[0011] Optionally, the automatic door opening and closing device further comprises a sealing gasket, and the sealing gasket is arranged on a side of the cover plate facing the door panel.

[0012] Optionally, the automatic door opening and closing device also includes a photoelectric switch and a shading member, the photoelectric switch is installed on the door panel, and the shading member is installed on the side wall of the cover plate. When the cover plate covers the door opening, the photoelectric switch senses the shading member, thereby determining that the cover plate is tightly sealed.

[0013] Optionally, a sensing channel is provided on the side of the photoelectric switch facing the door opening, and a transmitter and a receiver are respectively provided on both sides of the sensing channel. The light-shielding member includes a first bending piece and a second bending piece that are bent, and the first bending piece is fixedly mounted on the side wall of the cover plate. When the cover plate is in a closed state, the second bending piece is inserted into the sensing channel to block the receiver from receiving the photoelectric signal.

[0014] The utility model also provides a quality control refrigerator, which includes a box body and the automatic door opening and closing device mentioned above, wherein a door panel cover in the automatic door opening and closing device is arranged on the opening of the box body.

[0015] Different from the traditional rotary door and translational door, the automatic door opening and closing device adopts a connecting rod mechanism to realize the automatic opening and closing of the cover. Specifically, the connecting rod mechanism includes a left connecting rod and a right connecting rod relatively arranged on both sides of the cover, and the left connecting rod and the right connecting rod each include at least two connecting rods, at least one of the left connecting rod and the right connecting rod is an active rod, and the other connecting rods are driven rods, one end of the active rod and the driven rod are both rotatably connected to the side wall of the cover, the end of the active rod away from the cover is fixedly connected to the rotating shaft of the motor, and the end of the driven rod away from the cover is rotatably connected to the door panel. When the cover needs to be opened, the motor drives the active rod to rotate under the control command, and the driven rod rotates together under the transmission of the cover, the cover rises and moves backward, and finally leaves the door opening position, exposing the door opening completely, so that the mechanical gripper can automatically pick up and place the quality control products in the quality control refrigerator. After the quality control products are placed and taken, the motor drives the active rod to rotate in the opposite direction under the control command, and the cover plate rises and moves forward, and finally the door opening is blocked. During the process of opening and closing the door, the cover plate is always parallel to the upper surface of the door plate, which can avoid the poor sealing problem caused by the friction between the surfaces of the lateral single linear mechanism of the translational door, and the poor sealing problem caused by the relative rotation between the rotary door and the door plate, thereby ensuring the sealing of the quality control refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 An exploded view of an embodiment of the automatic door opening and closing device of the utility model;

[0018] Figure 2 This is a structural schematic diagram of an embodiment of the automatic door opening and closing device of the utility model in the door opening state;

[0019] Figure 3 This is a structural schematic diagram of an embodiment of the automatic door opening and closing device of the utility model in a door closing state;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0021] Figure 5 It is a side view of an embodiment of the automatic door opening and closing device of the utility model;

[0022] Figure 6It is an exploded view of an embodiment of the quality control refrigerator of the utility model;

[0023] Figure 7 This is a schematic diagram of the assembly structure of an embodiment of a quality control refrigerator of the utility model.

[0024] Description of Figure Numbers:

[0025] Label name Label name 100 Automatic door opening and closing device 51 Third Link 1 Door Panel 52 Fourth connecting rod 11 Door opening 6 Gasket 12 First side panel 7 Photoelectric switch 13 Second side panel 71 Photoelectric bracket 2 Cover 8 Shading parts 3 Drive parts 81 First bending piece 4 Left connecting rod 82 Second bending piece 41 First connecting rod 200 Quality Control Refrigerator 42 Second connecting rod 201 Cabinet 5 Right connecting rod

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] Quality control samples are usually sealed and stored in a quality control refrigerator before on-site inspection. To achieve automated testing, a hole is usually opened on the quality control refrigerator for a mechanical gripper to reach into the interior of the quality control refrigerator to take and place the quality control samples. At the same time, an automatic door opening device is provided on the hole to close and open the hole. At present, the automatic door opening device installed on the quality control refrigerator is either a rotating door or a sliding door. The corners of the rotating door are prone to wear during rotation, which leads to cold leakage. The sliding door needs to leave a slide groove, and the sealing is not guaranteed and is prone to cold leakage.

[0031] To this end, the present invention provides an automatic door opening and closing device 100 to replace the rotary door opening and closing door and the translational door opening and closing door, thereby improving the sealing performance of the automatic door opening and closing device.

[0032] Reference Figures 1 to 5 The embodiment of the automatic door opening and closing device 100 includes a door panel 1, a cover panel 2 and a connecting rod mechanism. The door panel 1 is provided with a door opening 11, and the cover panel 2 is provided on the door opening 11. The covering area of ​​the cover panel 2 is greater than or equal to the covering area of ​​the door opening 11. The connecting rod mechanism includes a left connecting rod 4 and a right connecting rod 5 which are relatively arranged on both sides of the cover panel 2. At least one of the left connecting rod 4 and the right connecting rod 5 is an active rod, and the other connecting rods are driven rods. One end of the active rod and the driven rod are both rotatably connected to the side wall of the cover panel 2, and the end of the active rod facing away from the cover panel 2 is connected to the driving member 3, and the end of the driven rod facing away from the cover panel 2 is rotatably connected to the door panel 1. The active rod drives the driven rod to rotate together under the drive of the driving member 3, thereby driving the cover panel 2 to translate to block or open the door opening 11.

[0033] The door panel 1 in the automatic door opening and closing device 100 is used to close the opening of the quality control refrigerator 200. The door panel 1 is provided with a door opening 11 for the mechanical gripper to extend into the interior of the quality control refrigerator 200. The door panel 1 is provided with a cover plate 2. The coverage area of ​​the cover plate 2 is larger than the coverage area of ​​the door opening 11. The cover plate 2 has a first state of blocking the door opening 11 and a second state of opening the door opening 11. The first state is the initial state. Different from the traditional rotary door opening and closing and translational door opening, the automatic door opening and closing device 100 uses a connecting rod mechanism to realize the automatic opening and closing of the cover plate 2. Specifically, the connecting rod mechanism includes a left connecting rod 4 and a right connecting rod 5 which are relatively arranged on both sides of the cover plate 2. The left connecting rod 4 and the right connecting rod 5 each include at least two connecting rods. At least one of the left connecting rod 4 and the right connecting rod 5 is an active rod, and the other connecting rods are driven rods. One end of the active rod and the driven rod are both rotatably connected to the side wall of the cover plate 2. The end of the active rod away from the cover plate 2 is connected to the driving member 3. For example, the driving member 3 can be a motor. The active rod is fixedly connected to the rotating shaft of the motor, and the end of the driven rod away from the cover plate 2 is rotatably connected to the door panel 1. The following embodiments are described by taking the driving member 3 as a motor as an example.

[0034] Therefore, when it is necessary to open the cover plate 2, the driving member 3 drives the active rod to rotate under the control command, and then drives the driven rod to rotate together. In this process, the cover plate 2 rises and moves backward, and finally leaves the position of the door opening 11, and the door opening 11 is completely exposed, so that the mechanical gripper can automatically pick up and place the quality control products in the quality control refrigerator 200. After the quality control products are taken and placed, the motor drives the active rod to rotate in the opposite direction under the control command, and the cover plate 2 rises and rotates forward, and finally blocks the door opening 11. In the process of opening and closing the door, the cover plate 2 is always parallel to the upper surface of the door panel 1, which can avoid the problem of poor sealing caused by friction between the surfaces of the lateral single linear mechanism of the translational opening and closing door, and can also avoid the problem of poor sealing caused by the relative rotation between the rotary opening and closing door and the door panel 1, thereby ensuring the sealing of the quality control refrigerator 200.

[0035] At the same time, since the opening and closing process of the cover plate 2 is a translational process, the opening is larger than that of a rotary door, and there is more space for the mechanical gripper to operate, thereby avoiding interference between the movement of the mechanical gripper and the cover plate 2.

[0036] In one embodiment, the left link 4 includes a first link 41 and a second link 42, and the right link 5 includes a third link 51 and a fourth link 52. The first link 41 and the third link 51 are arranged opposite to each other, and the second link 42 and the fourth link 52 are arranged opposite to each other. The first link 41, the second link 42, the third link 51 and the fourth link 52 constitute a parallelogram linkage mechanism, wherein the fourth link 52 is an active rod, and the first link 41, the second link 42 and the third link 51 are driven rods.

[0037] Furthermore, the door panel 1 is provided with a first side panel 12 and a second side panel 13 which are arranged opposite to each other. The first side panel 12 and the second side panel 13 are arranged at the rear of the door opening 11, and the "rear" refers to the side of the door opening 11 which faces the door opening direction. One end of the first connecting rod 41 and the second connecting rod 42 are hinged to the first side panel 12, and the other end of the first connecting rod 41 and the second connecting rod 42 are hinged to the cover panel 2. One end of the third connecting rod 51 is hinged to the side wall of the second side panel 13, and the other end of the third connecting rod 51 is hinged to the side wall of the cover panel 2. The motor is arranged between the first side panel 12 and the second side panel 13, and the rotating shaft of the motor is arranged perpendicular to the second side panel 13. The rotating shaft of the motor is passed through the fourth connecting rod 52 and fixedly connected to the fourth connecting rod 52, and the end of the fourth connecting rod 52 which is away from the motor is rotatably connected to the cover panel 2.

[0038] Among them, the distances between the rotation centers of the two ends of the first connecting rod 41, the second connecting rod 42, the third connecting rod 51 and the fourth connecting rod 52 are equal, thereby ensuring that the four connecting rods can form a parallelogram connecting rod mechanism, wherein the fourth connecting rod 52 is an active rod, and the remaining connecting rods are driven rods. The fourth connecting rod 52 rotates under the drive of the motor, and the remaining connecting rods rotate driven by the fourth connecting rod 52, thereby assisting the cover plate 2 to make parallel movements.

[0039] Among them, the first side plate 12 and the second side plate 13 are both provided with a first bearing, and the driven rod is hinged to the corresponding side plate through the first bearing. Second bearings are provided on both sides of the cover plate 2, and each connecting rod is hinged to the cover plate 2 through the second bearing. That is, the first connecting rod 41 is hinged to the first side plate 12 through the first bearing, the second connecting rod 42 is hinged to the first side plate 12 through the first bearing, and the third connecting rod 51 is hinged to the second side plate 13 through the first bearing. The first connecting rod 41, the second connecting rod 42, the third connecting rod 51 and the fourth connecting rod 52 are all hinged to the cover plate 2 through the second bearing, wherein each bearing can be a rolling bearing or a sliding bearing, and each bearing is used to support the connecting rod and reduce the friction when the connecting rod rotates, so that the connecting rod rotates smoothly.

[0040] In addition, a first gasket is provided between the driven rod and the corresponding side plate, and a second gasket is provided between the active rod and the driven rod and the cover plate 2. That is, a first gasket is provided between the first connecting rod 41, the second connecting rod 42 and the first side plate 12, and between the third connecting rod 51 and the second side plate 13, and a second gasket is provided between the first connecting rod 41, the second connecting rod 42, the third connecting rod 51 and the fourth connecting rod 52 and the cover plate 2. The first gasket and the second gasket are used to reduce the lateral friction when the connecting rod rotates, so as to further make the rotation of the connecting rod smoother.

[0041] The embodiment of the automatic door opening and closing device 100 may further include a sealing gasket 6, which is arranged on the side of the cover plate 2 facing the door plate 1, and the edge of the sealing gasket 6 is arranged flush with the edge of the cover plate 2, or the sealing gasket 6 is arranged to wrap the cover plate 2. The sealing gasket 6 is made of an elastic material, such as a rubber pad, a silicone pad, etc., and can be fixed to the cover plate 2 by adhesive. The sealing gasket 6 has a certain elasticity and can be compressed. When the cover plate 2 is lowered to fit with the door plate 1, the sealing gasket 6 is squeezed and deformed, thereby ensuring the sealing of the cover plate 2.

[0042] An embodiment of the automatic door opening and closing device 100 also includes a photoelectric switch 7 and a shading member 8. The photoelectric switch 7 is installed on the door panel 1, and the shading member 8 is installed on the side wall of the cover plate 2. When the cover plate 2 covers the door opening 11, the photoelectric switch 7 and the shading member 8 are arranged opposite to each other. The photoelectric switch 7 senses the shading member 8, thereby judging that the cover plate 2 is tightly sealed.

[0043] Specifically, a photoelectric bracket 71 is provided on the door panel 1, and a photoelectric switch 7 is installed on the photoelectric bracket 71. A sensing channel is opened on the side of the photoelectric switch 7 facing the door opening 11, and a transmitter and a receiver are respectively provided on both sides of the sensing channel. The shading member 8 can be a metal member, including a first bending piece 81 and a second bending piece 82 bent at 90°. The first bending piece 81 is fixedly installed on the side wall of the cover plate 2. When the cover plate 2 is in a closed state, the second bending piece 82 is inserted into the sensing channel to block the receiver from receiving the photoelectric signal.

[0044] For example, the transmitter and receiver in the photoelectric switch 7 can be an infrared transmitter and an infrared receiver respectively. When the cover 2 is in an open state, the photoelectric switch 7 and the shading member 8 are separated from each other, and there is no obstruction between the transmitter and the receiver in the photoelectric switch 7, so the receiver can receive the infrared light emitted by the transmitter; when the cover 2 is in a closed state, the second bending piece 82 in the shading member 8 is inserted into the sensing channel, and the photoelectric signal emitted by the transmitter is blocked by the second bending piece, and the receiver cannot receive the photoelectric signal, thereby judging that the sealing gasket 6 is tightly fitted to the door panel 1.

[0045] Reference Figure 6 and Figure 7 The utility model also proposes a quality control refrigerator 200, which includes a box body 201 and an automatic door opening and closing device 100. The specific structure of the automatic door opening and closing device 100 refers to the above embodiment. The door panel 1 in the automatic door opening and closing device 100 is covered on the opening of the box body 201 to seal the box body 201. Since the quality control refrigerator 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic door opening and closing device, characterized in that: include: A door panel, wherein a door opening is formed on the door panel; A cover plate, the cover plate is arranged on the door opening; A connecting rod mechanism, the connecting rod mechanism includes a left connecting rod and a right connecting rod relatively arranged on both sides of the cover plate, at least one of the left connecting rod and the right connecting rod is an active rod, and the other connecting rods are driven rods, one end of the active rod and the driven rod are both rotatably connected to the side wall of the cover plate, the end of the active rod facing away from the cover plate is connected to the driving member, and the end of the driven rod facing away from the cover plate is rotatably connected to the door panel, and the active rod drives the driven rod to rotate together under the drive of the driving member, thereby driving the cover plate to translate to block or open the door opening.

2. The automatic door opening and closing device according to claim 1, characterized in that: The left side connecting rod includes a first connecting rod and a second connecting rod, and the right side connecting rod includes a third connecting rod and a fourth connecting rod, the first connecting rod and the third connecting rod are arranged opposite to each other, and the second connecting rod and the fourth connecting rod are arranged opposite to each other, and the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod constitute a parallelogram connecting rod mechanism, wherein the fourth connecting rod is an active rod, and the first connecting rod, the second connecting rod and the third connecting rod are driven rods.

3. The automatic door opening and closing device according to claim 2, characterized in that: The door panel is provided with a first side panel and a second side panel which are arranged opposite to each other, the first side panel and the second side panel are arranged behind the door opening, one end of the first connecting rod and the second connecting rod are hinged to the first side panel, the other end of the first connecting rod and the second connecting rod are hinged to the side wall of the cover plate, one end of the third connecting rod is hinged to the second side panel, and the other end of the third connecting rod is hinged to the side wall of the cover plate; The driving member includes a motor, the rotating shaft of the motor is arranged perpendicular to the second side plate, the rotating shaft of the motor passes through the fourth connecting rod and is fixedly connected to the fourth connecting rod, and one end of the fourth connecting rod away from the motor is rotatably connected to the cover plate.

4. The automatic door opening and closing device according to claim 3, characterized in that: The first side plate and the second side plate are both provided with a first bearing, and the driven rod is hinged to the corresponding side plate through the first bearing; Second bearings are arranged on both sides of the cover plate, and each connecting rod passes through the second bearings to be hinged to the cover plate.

5. The automatic door opening and closing device according to claim 4, characterized in that: The first bearing and the second bearing are rolling bearings or sliding bearings.

6. The automatic door opening and closing device according to claim 3, characterized in that: A first gasket is arranged between the driven rod and the corresponding side plate, and a second gasket is arranged between the active rod, the driven rod and the cover plate.

7. The automatic door opening and closing device according to claim 1, characterized in that: The automatic door opening and closing device further comprises a sealing gasket, which is arranged on a side of the cover plate facing the door plate.

8. The automatic door opening and closing device according to claim 1, characterized in that: The automatic door opening and closing device also includes a photoelectric switch and a shading member. The photoelectric switch is installed on the door panel, and the shading member is installed on the side wall of the cover plate. When the cover plate covers the door opening, the photoelectric switch senses the shading member, thereby determining that the cover plate is fitted and sealed.

9. The automatic door opening and closing device according to claim 8, characterized in that: A sensing channel is provided on the side of the photoelectric switch facing the door opening, and a transmitter and a receiver are respectively provided on both sides of the sensing channel. The shading member includes a first bending piece and a second bending piece which are bent, and the first bending piece is fixedly mounted on the side wall of the cover plate. When the cover plate is in a closed state, the second bending piece is inserted into the sensing channel to block the receiver from receiving signals.

10. A quality control refrigerator, characterized in that: It comprises a box body and the automatic door opening and closing device according to any one of claims 1 to 9, wherein the door panel cover in the automatic door opening and closing device is arranged on the opening of the box body.

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