Cold storage door, integrated cold storage door and production system thereof
By installing an air bag and a deformation detection component under the soft door panel of the cold storage door, and using the control of the air pump and solenoid valve, the problem of cold air leakage caused by items left under the cold storage door is solved, achieving tighter door panel closing and reducing energy consumption. Effect.
Patent Information
- Application Number
- CN202210099533.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-01-27
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2042-01-27
AI Technical Summary
When the existing cold storage door loses items under the door panel, it is difficult to ensure that the door panel is closed tightly, resulting in cold air leakage and increasing refrigeration energy consumption.
Design a cold storage door that includes a soft door panel and a controller. An air bag is fixed under the soft door panel. There is a deformation detection component in the air bag. By controlling the air pump and solenoid valve, when the leftover items are detected, the air bag rotates and pushes away the items. Make sure the door panel is closed tightly.
It effectively avoids the leakage of cold air, reduces the energy consumption of cold storage refrigeration, and can automatically push away the leftover items under the door panel, improving the sealing of the door panel.
Smart Images

Figure CN114593552B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cold storage equipment, in particular to a cold storage door and a production system thereof. Background Art
[0002] Cold storage is mainly used for refrigerated storage of aquatic products, meat, medicine, scientific experiments, dairy products, chemicals, etc. When personnel or machinery enter and exit the cold storage door, the cold storage door remains open, and then the cold storage door is closed to reduce the loss of cold air in the cold storage. The existing technology has an up and down movable insulation door panel. When the door panel moves down and closes, if there are accidentally lost items under the door panel, the door will not be closed tightly and the cold air will leak out, causing continuous leakage of cold air and resulting in energy waste. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a cold storage door, an integrated cold storage door and a production system thereof. The cold storage door can push away lost items under the door panel so that the door panel is tightly closed to avoid leakage of cold air, reduce the energy consumption required for refrigeration of the cold storage, and remove ice on the door panel. The production system is used for the production of the above-mentioned cold storage door, which can effectively solve the problems in the background technology.
[0004] The technical solution adopted by the present invention to solve the technical problem includes:
[0005] On the one hand, a cold storage door is provided, including a soft door panel and a controller, wherein the soft door panel includes a vertical side one and a vertical side two, a support rod is fixed to the upper end of the soft door panel, the support rod is connected to the lower end of telescopic member two, and the upper end of telescopic member two is connected to the lower end of telescopic member one.
[0006] An airtight cloth is fixed to the second vertical side surface, and a closed air cavity is formed between the soft door panel and the airtight cloth. Two through holes connecting the air cavity are opened on the first vertical side surface of the soft door panel, wherein the outer side of one through hole is connected to the air outlet of the air pump, and the outer side of the other through hole is connected to an interface of the solenoid valve.
[0007] An air bag is fixed at the lower end of the soft door panel, and a deformation detection component is arranged in the inner cavity of the air bag.
[0008] The controller is electrically connected to the telescopic member 1, the telescopic member 2, the air pump and the electromagnetic valve respectively to supply power to them, and the controller is electrically connected to the deformation detection component to detect the compression of the air bag.
[0009] As a preferred technical solution of the present invention, a plurality of supporting rods are fixed to the vertical side surface at equal intervals along the height direction.
[0010] As a preferred technical solution of the present invention, the soft door panel is installed on the cold storage door frame, a magnetic suction part is fixed to the lower part of the side of the air bag, an electromagnetic door suction compatible with the magnetic suction part is installed on the ground of the cold storage door frame, and the controller is electrically connected to the electromagnetic door suction to power it.
[0011] As a preferred technical solution of the present invention, the deformation detection component is two soft conductive strips, which are respectively arranged on the upper and lower sides of the airbag cavity, and the detection port of the controller and the two soft conductive strips form a circuit with an open circuit at the two soft conductive strips.
[0012] On the other hand, an integrated cold storage door is also provided, which uses any of the aforementioned cold storage doors, and the number of cold storage doors is not less than two, and the soft door panels of the cold storage doors are arranged horizontally adjacent to each other and installed on the cold storage door frame.
[0013] As a preferred technical solution of the present invention, soft magnetic strips are fixed to both vertical sides of the soft door panel.
[0014] As a preferred technical solution of the present invention, protruding blocks are provided on both horizontal sides of the position where the soft door panel is installed on the side of the cold storage door frame.
[0015] On the other hand, a production system for cold storage doors is provided, including a conveyor, wherein the conveyor is provided with a movable support plate for conveying, a soft door panel is placed on the support plate, a drilling machine and a motor are installed on the side shell of the conveyor, a rotating rod is fixed on the output shaft of the motor, and the rotation direction of the rotating rod is perpendicular to the moving direction of the support plate.
[0016] As a preferred technical solution of the present invention, it also includes a latch pin and a latch plate installed on the rotating rod, and a latch hole is opened on the latch plate.
[0017] The drilling machine drills a through hole at one end of the soft door plate, and the bayonet pin penetrates the bayonet hole and the through hole to connect the bayonet plate and the soft door plate.
[0018] As a preferred technical solution of the present invention, the conveyor is a belt conveyor or a roller conveyor, and the soft door panel is provided with an auxiliary hole adapted to the through hole.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. The cold storage door of the example of the present invention, on the one hand, when it is detected that there are leftover items under the air bag, the air cavity between the soft door plate and the airtight cloth is inflated to make the air bag rotate and leave the ground, when the soft door plate moves down, the air bag contacts the ground, the air in the air cavity is exhausted, and the soft door plate moves up to make the air bag gradually move and reset. During the movement and reset process, the air bag pushes the leftover items away from under the air bag. After the cold storage door is closed, the cold air leakage is small, and the refrigeration energy consumption of the cold storage is reduced; on the other hand, the air cavity between the soft door plate and the airtight cloth is inflated to deform the airtight cloth, and the ice adhered to the cold storage door is convenient to remove; on the other hand, when machinery or goods hit the soft door plate, the soft door plate is displaced and deformed and can be reset, reducing the damage caused by accidental collision to the cold storage door and improving the safety of the cold storage door; on the other hand, multiple cold storage doors are installed adjacent to each other, and only one soft door plate is opened when people enter and exit. The corresponding number of soft door plates are opened according to the width of the mechanical equipment and the width of the goods transported, thereby improving the applicability of the integrated cold storage door and reducing the energy consumption of refrigeration.
[0021] 2. In the cold storage door production system of the present invention, the processing of the soft door panels and the installation components of the soft door panels are all on the conveyor and the soft door panels can be turned over, which makes the cold storage door processing convenient, improves efficiency and reduces the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;
[0023] Figure 2 for Figure 1 A schematic diagram of the structure at A;
[0024] Figure 3 for Figure 1 A schematic diagram of the structure at B;
[0025] Figure 4 It is a schematic structural diagram of another embodiment of the present invention;
[0026] Figure 5 for Figure 4 A schematic diagram of the structure at position C of FIG.
[0027] Figure 6 for Figure 1 A schematic diagram of the structure of the middle air bag from one perspective;
[0028] Figure 7 It is a schematic structural diagram of another embodiment of the present invention;
[0029] Figure 8 It is a schematic diagram of a state structure of a production system of a cold storage door of the present invention;
[0030] Fig. 9 It is a schematic diagram of the structure of another state of the production system of the cold storage door of the present invention.
[0031] In the figure: 1 telescopic part 1, 2 telescopic part 2, 3 air bag, 4 soft door panel, 5 support rod, 6 horizontal rod, 7 soft magnetic strip, 8 air pump, 9 solenoid valve, 10 airtight cloth, 11 through hole, 12 soft conductive belt, 13 magnetic suction part, 14 controller, 15 electromagnetic door suction, 16 motor, 17 rotating rod, 18 drilling machine, 19 support plate, 20 conveyor. DETAILED DESCRIPTION
[0032] 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 described embodiments 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 creative work are within the scope of protection of the present invention.
[0033] Embodiment 1:
[0034] See also Figure 1-5 The present embodiment discloses a cold storage door, including a soft door panel 4 and a controller 14. The two large-area side surfaces of the soft door panel 4 are respectively a vertical side surface 1 and a vertical side surface 2. A support rod 5 is fixed to the upper end of the soft door panel 4. The support rod 5 is connected to the lower end of the telescopic member 2. The upper end of the telescopic member 2 is connected to the lower end of the telescopic member 1. The support rod 5 stretches the upper end of the soft door panel 4.
[0035] An airtight cloth 10 is fixed on the second vertical side surface, and a closed air cavity is formed between the soft door panel 4 and the airtight cloth 10. Two through holes 11 connecting the air cavity are opened on the first vertical side surface of the soft door panel 4, wherein the outer side of one through hole is connected to the air outlet of the air pump 8, and the outer side of the other through hole is connected to an interface of the solenoid valve 9.
[0036] An air bag 3 is fixed to the lower end of the soft door panel 4, and a deformation detection component is arranged in the inner cavity of the air bag 3.
[0037] The controller 14 is electrically connected to the telescopic member 1 , the telescopic member 2 , the air pump 8 and the electromagnetic valve 9 respectively to supply power thereto, and the controller 14 is electrically connected to the deformation detection component to detect the squeezing condition of the airbag 3 .
[0038] Furthermore, a plurality of support rods 5 are fixed at equal intervals along the height direction on the vertical side surface, and the support rods 5 enable the soft door panel 4 to rotate only in the horizontal direction.
[0039] Furthermore, the deformation detection component is two soft conductive belts 12, and the two soft conductive belts 12 are respectively arranged on the upper and lower sides of the inner cavity of the airbag 3, and the detection port on the controller 14 and the two soft conductive belts 12 constitute a circuit with an open circuit at the two soft conductive belts 12; or the deformation detection component is an air pressure sensor, and the air pressure sensor and the controller 14 are electrically connected. The controller 14 monitors the air pressure in the airbag 3 through the air pressure sensor, thereby monitoring the force and deformation of the airbag 3.
[0040] The soft door panel 4 is a rubber soft door panel, a plastic soft door panel, a rubber elastic panel or a plastic elastic panel.
[0041] The airtight cloth 10 is made of soft rubber cloth or soft plastic cloth.
[0042] The controller 14 used is a PLC controller, a single-chip microcomputer or an integrated chip; the telescopic part 1 is an electric push rod, a linear motor or an electric chain disk; the telescopic part 2 is an electric push rod, a linear motor or an electric chain disk; further, the detection port of the controller 14 includes a high-level output port and a signal input detection port.
[0043] The controller 14, telescopic member 1, telescopic member 2, air pump 8, solenoid valve 9, etc. used in the present invention are all commonly used electronic components in the prior art, and their working methods and circuit structures are all well-known technologies and will not be described in detail here.
[0044] The working process and principle of this embodiment are:
[0045] The retracted state of the telescopic member 1 is the normal state, and the closed state of the solenoid valve 9 is the normal state.
[0046] The cold storage door is installed on the side of the cold storage door frame, and the upper end of the telescopic member 1 is connected to the cold storage door wall or the external bracket. When the cold storage door is opened, the controller 14 controls the telescopic member 2 to shorten so that the telescopic member 2 moves up and drives the soft door plate 4 to move up, thereby exposing the cold storage door entrance;
[0047] When the cold storage door is closed, the controller 14 controls the telescopic member 2 to extend so that the telescopic member 2 moves upward and drives the soft door plate 4 to move downward, and the lower end of the air bag 3 contacts the ground, thereby blocking the cold storage door entrance;
[0048] When people enter or exit or mechanical equipment enters or exits to transfer goods, items are left under the soft door panel 4. When the soft door panel 4 drives the air bag 3 to move down to the lowest point, the air bag 3 contacts the leftover items and deforms, and the air pressure in the air bag 3 increases.
[0049] The controller 14 detects that the deformation of the air bag 3 exceeds the setting through the deformation detection component, and the controller 14 controls the air pump 8 to inflate the air cavity, and the controller 14 controls the solenoid valve 9 to be closed. The air in the air cavity increases, and the lower end of the soft door plate 4 drives the air bag 3 to rotate and the air bag 3 is lifted off the ground. Figure 4, then the controller 14 controls the air pump 8 to stop working, the controller 14 delays the extension of the telescopic part 1, the telescopic part 1 drives the soft door panel 4 and the air bag 3 to move downward through the telescopic part 2, and the air bag 3 and the ground move, and then the controller 14 controls the solenoid valve 9 to change from a closed state to an open state, the controller 14 delays the shortening of the telescopic part 1, and when the telescopic part 1 drives the soft door panel 4 to move upward through the telescopic part 2, the lower end of the soft door panel 4 and the air bag 3 slide to the bottom of the soft door panel 4 under the action of gravity. In this process, the air bag 3 pushes the remains to slide on the ground and leave the entire bottom of the soft door panel 4, so that the cold air leakage of the cold storage door is less after closing.
[0050] Preferably, the soft door panel 4 is provided with one side of the airtight cloth 10 facing the inside of the cold storage. When ice forms on the airtight cloth 10, the controller 14 controls the air pump 8 to inflate the air cavity, and the controller 14 controls the solenoid valve 9 to be in a closed state. The air in the air cavity increases and the airtight cloth 10 is deformed downward, making it easy to remove the ice on the airtight cloth 10.
[0051] When the airbag 3 moves down and contacts the leftover items, the airbag 3 is deformed and the two soft conductive strips 12 are in contact. The detection port on the controller 14 and the two soft conductive strips 12 form a closed circuit, and it is detected that there are leftover items under the airbag 3. If there are no leftover items under the airbag 3, the airbag 3 is in direct contact with the ground, and the two soft conductive strips 12 are not in contact.
[0052] The soft conductive tape 12 is a conductive rubber tape or a conductive metal sheet.
[0053] This cold storage door is suitable for cold storage built in a factory building or this cold storage door is suitable for cold storage door inlet height not more than half of the overall height of the cold storage, so as to facilitate the coordinated use of telescopic part 1 and telescopic part 2.
[0054] The cold storage door can be used in conjunction with the hard opening and closing cold storage door in the prior art. When personnel or machinery need to frequently enter and exit the cold storage, the hard opening and closing cold storage door is always open. The cold storage door is opened and closed during the personnel entry and exit or machinery entry and exit projects to reduce the loss of cold air in the cold storage and reduce energy loss; and when machinery or goods hit the soft door panel 4, the soft door panel 4 is deformed, reducing the damage to the cold storage door caused by accidental collisions, thereby improving the safety of the cold storage door.
[0055] Lost items include but are not limited to packaging fragments, stones brought by the movement of mechanical vehicles, belongings of staff members, and food.
[0056] Embodiment 2:
[0057] like Figure 1-7As shown, the present embodiment discloses a cold storage door, and its structure is substantially the same as that of the first embodiment, except that the soft door panel 4 of the present embodiment is installed on the cold storage door frame, a magnetic suction component 13 is fixed to the lower part of the side of the air bag 3, and an electromagnetic door suction 15 adapted to the magnetic suction component 13 is installed on the ground of the cold storage door frame, and the controller 14 is electrically connected to the electromagnetic door suction 15 to supply power to it; the electromagnetic door suction 15 is a commonly used electronic component in the prior art, and its working mode and circuit structure are well-known technologies, which will not be elaborated here.
[0058] Preferably, protruding blocks are provided on both sides of the position where the soft door panel 4 is installed on the side of the cold storage door frame.
[0059] The working process and principle of this embodiment are:
[0060] When it is necessary to lock the cold storage door, the controller 14 controls the telescopic part 2 to extend, so that the telescopic part 2 drives the soft door plate 4 to move downward, the lower end of the air bag 3 contacts the ground, the soft door plate 4 blocks the entrance of the cold storage door, and the magnetic part 13 is close to the electromagnetic door suction 15. The controller 14 controls the electromagnetic door suction 15 to energize so that the electromagnetic door suction 15 magnetically attracts the magnetic part 13, so that the air bag 3 is fixed on the ground, thereby realizing the locking of the cold storage door.
[0061] Preferably, protruding blocks are provided on both sides of the outer side of the cold storage door near the door frame; when it is necessary to clean the ice on one side of the cold storage door inside the cold storage to facilitate the opening and closing of the cold storage door; the controller 14 controls the electromagnetic door suction 15 to be energized and the electromagnetic door suction 15 magnetically attracts the magnetic suction part 13, the controller 14 controls the telescopic part 1 to extend, and at the same time the controller 14 controls the air pump 8 to work, the air cavity between the soft door panel 4 and the airtight cloth 10 expands and the airtight cloth 10 bends and deforms, the protruding blocks make the cold storage door always block the entrance and exit of the cold storage, so as to remove the ice on the cold storage door, and less cold air is lost during the removal process.
[0062] Then the controller 14 controls the solenoid valve 9 to change from a closed state to an open state, and the controller 14 delays the control of the telescopic member 1 to shorten, and the telescopic member 1 drives the soft door plate 4 to move upward through the telescopic member 2, so that the shape of the soft door plate 4 is restored.
[0063] Embodiment three:
[0064] like Figure 7 As shown, this embodiment discloses an integrated cold storage door, which uses no less than two cold storage doors in the aforementioned embodiment 1 or embodiment 2, and the soft door panels 4 of the cold storage door are arranged horizontally adjacent to each other and installed on the cold storage door frame.
[0065] Furthermore, soft magnetic strips 7 are fixed to both vertical sides of the soft door panel 4 .
[0066] Preferably, protruding blocks are provided on both sides of the position where the soft door panel 4 is installed on the side of the cold storage door frame.
[0067] The working process and principle of this embodiment are:
[0068] When people enter or exit, only one soft door panel 4 is opened to reduce the loss of cold air; a corresponding number of soft door panels 4 are opened according to the width of the mechanical equipment and the width of the goods transported, thereby improving the applicability of the integrated cold storage door and reducing the energy consumption of refrigeration.
[0069] The soft magnetic strip 7 makes it easy to align the sides of two adjacent soft door panels 4, thereby reducing the loss of cold air.
[0070] Embodiment 4:
[0071] like Figure 8 and Fig. 9 As shown, this embodiment discloses a production system dedicated to producing the cold storage door in Example 1, Example 2 or Example 3. This embodiment includes a conveyor 20, on which is provided a support plate 19 for conveying movement, on which a soft door panel 4 is placed, and a drilling machine 18 and a motor 16 are installed on the side shell of the conveyor 20. A rotating rod 17 is fixed on the output shaft of the motor 16, and the rotation direction of the rotating rod 17 is perpendicular to the moving direction of the support plate 19.
[0072] This embodiment also includes a bayonet and a bayonet plate installed on the rotating rod 17, wherein the bayonet plate is provided with a bayonet hole, wherein a drilling machine 18 drills two through holes 11 at one end of the soft door plate 4, and the bayonet pin penetrates the bayonet hole and the through hole 11 and connects the bayonet plate and the soft door plate 4.
[0073] The preferred conveyor 20 is a belt conveyor or a roller conveyor, and the soft door panel 4 is provided with an auxiliary hole adapted to the through hole 11 .
[0074] The working process and principle of this embodiment are:
[0075] The soft door panel 4 is placed on the support plate 19 by external mechanical equipment or personnel, and the staff uses the cutting equipment to cut the size of the soft door panel 4 on the support plate 19, and the conveyor 20 conveys the soft door panel 4 through the support plate 19, and the motor 16 drives the rotating rod 17 to rotate, and the end of the rotating rod 17 away from the motor 16 is not higher than the support plate 19, and the rotating rod 17 limits the movement of the support plate 19 so that the soft door panel 4 moves to the drilling operation position of the drilling machine 18, and the drilling machine 18 opens two through holes 11 in the soft door panel 4;
[0076] Install airtight fabric 10 on the side of the soft door panel 4;
[0077] The motor 16 drives the rotating rod 17 to rotate, and the end of the rotating rod 17 away from the motor 16 is higher than the soft door plate 4. The card pin is arranged in the card hole and the through hole 11 to connect the card plate and the soft door plate 4. The conveyor 20 conveys the soft door plate 4 through the support plate 19, and the rotating rod 17 and the card drive the soft door plate 4 to turn over from one end, so as to realize the turning over of the soft door plate 4. Compared with manual turning over, the efficiency is improved and the work intensity of the staff is reduced;
[0078] A horizontal rod 6 is installed on the upper side of the soft door plate 4 along its length direction, and an air pump 8 and a solenoid valve 9 are installed on the two through holes 11 .
[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cold storage door, characterized in that: The invention comprises a soft door panel (4) and a controller (14), wherein the soft door panel (4) comprises a first vertical side surface and a second vertical side surface, a support rod (5) is fixed to the upper end of the soft door panel (4), the support rod (5) is connected to the lower end of a second telescopic member (2), and the upper end of the second telescopic member (2) is connected to the lower end of the first telescopic member (1); An airtight cloth (10) is fixed to the second vertical side surface, a closed air cavity is formed between the soft door panel (4) and the airtight cloth (10), and two through holes (11) communicating with the air cavity are opened on the first vertical side surface of the soft door panel (4), wherein the outer side of one through hole is connected to the air outlet of the air pump (8), and the outer side of the other through hole is connected to an interface of the solenoid valve (9); An air bag (3) is fixed to the lower end of the soft door panel (4); a deformation detection component is provided in the inner cavity of the air bag (3); the deformation detection component is two soft conductive strips (12); the two soft conductive strips (12) are respectively arranged on the upper and lower sides of the inner cavity of the air bag (3); the detection port of the controller (14) and the two soft conductive strips (12) form a circuit with an open circuit at the two soft conductive strips (12); The controller (14) is respectively electrically connected to the telescopic member 1 (1), the telescopic member 2 (2), the air pump (8) and the solenoid valve (9) to supply power thereto, and the controller (14) is electrically connected to the deformation detection component to detect the compression condition of the air bag (3).
2. The cold storage door according to claim 1, characterized in that: A plurality of support rods (5) are fixed at equal intervals on a vertical side surface of the soft door panel (4) along its height direction, and the support rods (5) enable the soft door panel (4) to rotate only around a horizontal axis.
3. The cold storage door according to any one of claims 1-2, characterized in that: The soft door panel (4) is mounted on a cold storage door frame, a magnetic attraction piece (13) is fixed to the lower portion of the side of the air bag (3), an electromagnetic door catch (15) adapted to the magnetic attraction piece (13) is mounted on the floor of the cold storage door frame, and the controller (14) is electrically connected to the electromagnetic door catch (15) to supply power to it.
4. An integrated cold storage door, characterized in that: The cold storage door comprises at least two of any one of claims 1 to 3, wherein the soft door panels (4) of the cold storage door are arranged horizontally adjacent to each other and are installed on the cold storage door frame.
5. The integrated cold storage door according to claim 4 is characterized in that: Soft magnetic strips (7) are fixed to both vertical sides of the soft door panel (4).
6. The integrated cold storage door according to claim 4, characterized in that: Protruding blocks are provided on both sides of the position where the soft door panel (4) is installed on the side of the cold storage door frame.
7. A production system dedicated to producing the cold storage door according to any one of claims 1 to 3, characterized in that: The invention comprises a conveyor (20), wherein the conveyor (20) is provided with a support plate (19) for conveying movement, a soft door plate (4) is placed on the support plate (19), a drilling machine (18) and a motor (16) are installed on the side shell of the conveyor (20), a rotating rod (17) is fixed on the output shaft of the motor (16), and the rotating direction of the rotating rod (17) is perpendicular to the moving direction of the support plate (19).
8. The cold storage door production system according to claim 7, characterized in that: It also includes a latch pin and a latch plate mounted on the rotating rod (17), wherein the latch plate is provided with a latch hole; The drilling machine (18) drills a through hole (11) at one end of the soft door plate (4), and the latch pin is inserted through the latch hole and the through hole (11) to connect the latch plate and the soft door plate (4).
9. The cold storage door production system according to claim 8, characterized in that: The conveyor (20) is a belt conveyor or a roller conveyor, and the soft door panel (4) is provided with an auxiliary hole adapted to the through hole (11).
Citation Information
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