Switch button box structure used in refrigerated container

Abstract

The utility model relates to the technical field of electrical switch box structures, and discloses a switch button box structure used in a refrigerated container, which comprises a button panel, a switch box rear shell and a fixed frame, and is characterized in that the switch box rear shell comprises a shell with an opening on one side and a flange plate fixedly connected to the opening of the shell in a sleeving manner; the side length of a groove opening of a mounting groove of the container is larger than the opening size of the shell and smaller than the length of each side of the flange disc, second mounting holes with the same positions and sizes are formed in the positions, corresponding to the first mounting holes in the flange disc, of the fixed frame in a penetrating mode, and the second mounting holes are connected with the corresponding first mounting holes in the flange disc through screws. Compared with an existing mode that a screw is directly fixed to the inner layer plate of the container, the structure avoids a series of problems that the switch button box is not compact enough in installation, the inner layer plate of the container is damaged and the like due to the fact that the inner layer plate of the container is made of aluminum and is thin, and the screw is prone to slipping in the screwing process.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switch box structures, in particular to a switch button box structure used in a refrigerated container. Background Art

[0002] At present, there are relevant temperature requirements for special refrigerated and frozen containers in the market. For example, customers require a temperature of 2-8 degrees for storing and transporting fruits, a temperature of -20 degrees for storing and transporting seafood and meat, and an ambient temperature requirement of -60 degrees for special seafood. Medical specimens also have relevant temperature requirements, as do various foods. Refrigerated containers are usually composed of inner and outer panels for insulation. Since the light in the container is dim during the day, lighting is installed in the box for better and safer loading and unloading of goods. At the same time, the container is made of various metals, and the mobile phone signal in the box is very weak or no signal, and the sound insulation is very good. The door is heavy and has an opening handle and mechanical mechanism from the outside for easy opening. If the door is closed by mistake, it is difficult for people in the box to open the door and leave. In addition, the temperature in the refrigerated container is low, and being trapped for a long time may be life-threatening. Therefore, in order to avoid such incidents, sound and light alarms are installed outside the box, and switches are also installed inside the container.

[0003] Existing button switch boxes used in containers are usually composed of two parts, including a switch box back shell and a switch button panel installed on the switch box back shell. The switch box back shell is mostly made of a stamping mold, and the switch button panel part also uses a stainless steel stamping mold. Before installation, a square mounting groove matching the shape of the switch box back shell will be opened on the inner plate of the container in advance, and mounting holes will be opened at the four corners of the mounting groove. When installing the switch button box, the switch box back shell will be placed in the mounting groove first. Specifically, the shell protruding from the rear of the switch box back shell is disposed between the inner plate and the outer plate of the container by the notch of the mounting groove, and the flange plate connected to the shell opening will be in close contact with the container wall. At this time, it is installed with the inner plate of the container by screws, and finally the button panel is fixed to the switch box back shell.

[0004] However, when the flange plate in the rear shell of the existing switch box is installed with a plurality of screws to the container wall, since the inner layer panels of the refrigerated container are mostly made of aluminum and are relatively thin, the screws are prone to thread slippage during the tightening process on the thin-walled inner layer panels, resulting in the switch button box being not installed tightly enough and also causing damage to the inner layer panels of the container. Utility Model Content

[0005] The utility model provides a switch button box structure for a refrigerated container. Compared with the existing method of fixing screws directly to the inner layer plate of the container, the present structure avoids a series of problems such as the screws slipping during the tightening process due to the inner layer plate of the container being made of aluminum and having a relatively thin thickness, thereby causing the switch button box to be installed less tightly and causing the inner layer plate of the container to be damaged.

[0006] The utility model provides a switch button box structure for a refrigerated container, comprising: a switch box rear shell and a fixed frame, the switch box rear shell comprising a shell with an opening on one side and a flange plate sleeved and fixedly connected to the opening of the shell, the side length of the installation slot of the container is larger than the opening size of the shell and smaller than the length size of each side of the flange plate, a plurality of first installation holes are opened along the thickness direction on the peripheral side of the flange plate close to the shell opening, the end surface of the flange plate away from the shell is tightly attached to the inner wall of the container inner plate close to the installation slot, so that the opening of the shell faces outside the installation slot, the fixed frame and the flange plate have the same shape and size, and second installation holes of the same position and size are opened through the fixed frame corresponding to the positions of the first installation holes on the flange plate, the second installation holes are connected to the corresponding first installation holes on the flange plate by screws, so that the flange plate and the fixed frame clamp the inner plate of the container inside and outside.

[0007] Preferably, a sealing groove surrounding the circumference of the flange disc is provided on the end face away from the shell, and a clip is fixedly connected to the fixed frame corresponding to the position and shape of the sealing groove. When the fixed frame is fitted with the flange disc, the clip is placed in the sealing groove.

[0008] Preferably, a plurality of columns are fixedly connected to the cavity of the housing near the opening and extend along the depth direction of the cavity, and each column is provided with a blind hole for mounting a switch button panel.

[0009] Preferably, an extension column is extended toward the housing at a position of the flange corresponding to each first mounting hole, and the first mounting hole extends into the extension column.

[0010] Preferably, the four inner corners of the fixed frame are provided with arc-shaped protrusions extending horizontally toward the diagonal line, the number of the first mounting holes is the same as the number of the protrusions, the second mounting holes are correspondingly opened on each protrusion of the fixed frame, and the switch button panel is provided with an adaptive groove at the position corresponding to each protrusion.

[0011] Preferably, the shell, the flange plate and the fixed frame are all made of polycarbonate (PC).

[0012] Preferably, the first mounting holes are distributed in a rectangular shape, and the hole spacing size is 105mm*105mm.

[0013] Compared with the prior art, the beneficial effect of the present invention is that: compared with the existing structure, the structure of the switch button box is a waterproof button switch box injection molded by an injection mold. When in use, the installation method is pre-installed. First, the shell and the flange plate connected to the shell are placed as a whole inside the mounting groove of the container, specifically between the inner plate and the outer plate of the container, and the end face of the flange plate away from the shell is tightly attached to the inner wall of the inner plate of the container, so that the outer edge of the flange plate is partially in contact with the inner wall of the inner plate, the first mounting holes are exposed and the shell opening is exposed in the mounting groove. At this time, it is only necessary to move the fixed frame close to the mounting groove of the container and align the second mounting holes on it with the first mounting holes one by one. At this time, the fixed frame and the flange plate clamp the inner plate of the container, and then use screws to fix the fixed frame and the flange plate. At this time, the installation of the switch box rear shell is completed, and then the button panel is fixed on the rear shell. At this time, the entire installation of the waterproof button box is completed.

[0014] Compared with the existing method of fixing screws directly to the inner layer of the container, this structure avoids a series of problems such as the screws slipping during the tightening process due to the inner layer of the container being made of aluminum and thin, resulting in the switch button box being not installed tightly enough and the inner layer of the container being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the exploded structure of a switch button box structure for a refrigerated container provided by an embodiment of the present utility model;

[0016] Figure 2 This is a structural diagram of an installation state of a switch button box structure for a refrigerated container provided by an embodiment of the present utility model;

[0017] Figure 3 A schematic diagram of a switch box rear shell structure of a switch button box structure for a refrigerated container provided by an embodiment of the present invention;

[0018] Figure 4 This is a structural diagram of a switch button box structure for a refrigerated container provided by an embodiment of the present invention, which is installed on an inner layer plate of the container;

[0019] Figure 5 This is a structural schematic diagram of a horizontal unspliced ​​installation of a switch button box structure for a refrigerated container provided by an embodiment of the present invention;

[0020] Figure 6 This is a schematic structural diagram of a switch box rear shell from a top view of a switch button box structure for a refrigerated container provided by an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Switch box back shell; 11. Housing; 111. Column; 1111. Blind hole; 12. Flange plate; 121. First mounting hole; 122. Sealing slot; 123. Extension column; 2. Container; 21. Inner plate; 211. Mounting slot; 3. Fixed frame; 31. Second mounting hole; 32. Card strip; 33. Raised plate; 4. Switch button panel; 41. Groove. DETAILED DESCRIPTION

[0023] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention 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 understood as a limitation on the present invention.

[0025] refer to Figure 1 、 Figure 2 and Figure 3 The utility model provides a switch button box structure for a refrigerated container, comprising: a switch box rear shell 1, a fixed frame 3, the switch box rear shell 1 comprises a shell 11 with an opening on one side and a flange plate 12 which is sleeved and fixedly connected to the opening of the shell 11, the mounting groove 211 of the container 2 has a notch side length larger than the opening size of the shell 11 and smaller than the length of each side of the flange plate 12, a plurality of first mounting holes 121 are opened along the thickness direction on the peripheral side of the flange plate 12 close to the opening of the shell 11, the end surface of the flange plate 12 away from the shell 11 is closely attached to the inner wall of the inner plate 21 of the container 2 near the mounting groove 211, so that the opening of the shell 11 faces the outside of the mounting groove 211, the fixed frame 3 and the flange plate 12 have the same shape and size, and the fixed frame 3 corresponding to the positions of the first mounting holes 121 on the flange plate 12 are penetrated with second mounting holes 31 of the same position and size, such as Figure 2 and Figure 4 As shown, the second mounting holes 31 are connected to the corresponding first mounting holes 121 on the flange plate 12 by screws, so that the flange plate 12 and the fixed frame 3 clamp the inner layer plate 21 of the container 2 inside and outside.

[0026] In the above embodiment, the structure of the switch button box is compared with the existing structure. The present structure is a waterproof button switch box that is injection molded by an injection mold. When in use, the installation method is pre-installed. First, the shell 11 and the flange plate 12 connected to the shell 11 are placed as a whole inside the installation groove 211 of the container 2, specifically between the inner plate 21 and the outer plate of the container 2, and the end surface of the flange plate 12 away from the shell 11 is tightly attached to the inner wall of the inner plate 21 of the container 2, so that the outer edge of the flange plate 12 is partially in contact with the inner wall of the inner plate 21, the first installation holes 121 are all exposed and the opening of the shell 11 is exposed in the installation groove 211. At this time, it is only necessary to move the fixed frame 3 close to the container 2 and align the second mounting holes 31 thereon with the first mounting holes 121 one by one. At this time, the fixed frame 3 and the flange plate 12 clamp the inner plate 21 of the container 2, and then use screws to fix the fixed frame 3 and the flange plate 12. At this time, the installation of the switch box rear shell 1 is completed, and the button panel 4 is fixed to the rear shell. At this time, the whole set of installation of the waterproof button box is completed. Compared with the existing screws directly fixed to the inner plate 21 of the container 2, this structure avoids the problem that the screws are slipped during the tightening process because the inner plate 21 of the container 2 is made of aluminum and is relatively thin, thereby causing the switch button box to be installed not tightly enough and causing the inner plate 21 of the container 2 to be damaged.

[0027] Specifically, after installation, foam filling is carried out in the insulation board of the container 2. After the construction is completed, the switch button panel 4 is installed and the wires are connected. This structure is pre-installed and adopts a compression and clamping installation method to replace the traditional screw installation method. It has better effect and is more practical.

[0028] Further, refer to Figure 1 Considering that the existing switch box rear shell and the container inner plate may not fit tightly enough after being fixed with screws or rivets, and special refrigerated containers are often accompanied by water vapor, the water vapor in the container may penetrate into the switch box rear shell after long-term use and cause water seepage. The current existing technology is for workers to use sealant to seal it, but the sealant will age and fall off after a long time of more than 2 to 3 years, thereby damaging the button part in the switch box and causing malfunction or malfunction. Therefore, this structure is provided with a sealing groove 122 surrounding the circumference of the flange plate 12 on the end surface away from the shell 11, and the fixed frame 3 is fixedly connected with a card strip 32 corresponding to the position and shape of the sealing groove 122. When the fixed frame 3 is in contact with the flange plate 12, the card strip 32 is placed in the sealing groove 122.

[0029] In the above embodiments, by providing the clamping strip 32 and the sealing clamping groove 122, the fixed frame 3 and the flange plate 12 can be connected in a sealed compression-clamping manner. At the same time, a sealing ring or a sealing strip can be provided in the sealing clamping groove 122 to further improve the sealing performance of the fixed frame 3 and the flange plate 12 after the connection. At the same time, the fixed frame 3 and the flange plate 12 can also be sealed for a secondary seal by gluing, which has the effect of preventing the cables inside the waterproof shell from being affected by moisture and cold.

[0030] Further, refer to Figure 1 A plurality of columns 111 are fixedly connected to the concave cavity near the opening of the shell 11 and extend along the depth direction of the cavity. The columns 111 are all provided with blind holes 1111 for installing the switch button panel 4.

[0031] In the above embodiment, the blind hole 1111 is provided to facilitate the installation of screws on the switch button panel 4, wherein the column 111 can extend the length of the blind hole 1111 and can be adapted to screws with longer lengths.

[0032] Further, refer to Figure 1 The flange 12 has extension columns 123 extending toward the housing 11 at positions corresponding to the first mounting holes 121 , and the first mounting holes 121 extend into the extension columns 123 .

[0033] In the above embodiment, the extension column 123 has a similar effect to the above-mentioned column 111, and the depth of the first mounting hole 121 can be extended. The first mounting hole 121 does not pass through the other end of the extension column 123. Through the extension column 123, longer screws can be used for connection, and there is no need to worry about the screw stripping caused by the flange plate 12 being too thin due to passing through the flange plate 12.

[0034] Further, refer to Figure 1 The four inner corners of the fixed frame 3 all have arc-shaped protrusions 33 extending horizontally toward the diagonal line. The number of the first mounting holes 121 is the same as the number of the protrusions 33. The second mounting holes 31 are opened one by one on each protrusion 33 of the fixed frame 3, and the switch button panel 4 is provided with an adaptive groove 41 at the position corresponding to each protrusion 33.

[0035] In the above embodiment, the convex plate 33 and the corresponding groove 41 on the switch button panel 4 can achieve a beneficial effect of preventing the switch button panel 4 from deflecting.

[0036] At the same time, if Figure 3 and Figure 5As shown, in order to improve the sealing and waterproof properties, a card slot smaller than the sealing card slot 122 can be opened on the lower end surface of the fixed frame 3. At the same time, the position and size of the card slot opened in an annular shape on the flange plate 12 corresponding to the fixed frame 3 can be adapted to be connected with a plug-in protrusion, and a sealing strip can be set in the card slot to cooperate with the sealing card slot 122 to achieve a secondary sealing effect.

[0037] Further, refer to Figure 1 The shell 11, the flange plate 12 and the fixed frame 3 are all made of polycarbonate (PC).

[0038] In the above embodiments, the following effects are achieved by preferentially selecting the polycarbonate (PC) material: 1. It has thermal stability and can be used for a long time in the temperature range of -60°C to 120°C; 2. It has excellent impact strength; 3. It has good chemical resistance; 4. It has good heat aging resistance; 5. It is inherently flame retardant, and flame retardants can also be added to achieve certain flame retardant standards.

[0039] Usage effect: 1. Compared with other plastic materials, it is not easily damaged during loading and unloading of goods and has a certain toughness; 2. Due to the low temperature inside the refrigerator, PC material is not easy to crack or deform when used in a low temperature environment for a long time; 3. Metal materials are easily corroded by seawater, and PC material has better corrosion resistance than the former; 4. Electrical components must have certain flame retardancy and insulation when used in a humid environment.

[0040] Further, refer to Figure 1 The first mounting holes 121 are distributed in a rectangular shape and are uniform. The hole spacing between the first mounting holes 121 is 105 mm*105 mm.

[0041] In the above embodiment, the maximum dimensions of the structure after assembly are 124mm*124mm*37mm in length, width and height respectively.

[0042] In summary, this device can be pre-installed during use, which is convenient for later foaming construction, reduces construction steps, improves installation efficiency, and has the advantages of overall beauty, easy operation, and strong practicality.

[0043] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A switch button box structure for a refrigerated container, characterized in that: include: The switch box rear shell (1) comprises a shell (11) with an opening on one side and a flange plate (12) sleeved and fixedly connected to the opening of the shell (11); the side length of the mounting groove (211) of the container (2) is larger than the opening size of the shell (11) and smaller than the length of each side of the flange plate (12); the flange plate (12) is provided with a plurality of first mounting holes (121) along the thickness direction on the peripheral side close to the opening of the shell (11); the end surface of the flange plate (12) away from the shell (11) is closely attached to the inner wall of the inner plate (21) of the container (2) close to the mounting groove (211), so that the opening of the shell (11) faces outside the mounting groove (211); The fixed frame (3) has the same shape and size as the flange plate (12), and the fixed frame (3) is provided with second mounting holes (31) of the same position and size at positions corresponding to the first mounting holes (121) on the flange plate (12). The second mounting holes (31) are connected to the corresponding first mounting holes (121) on the flange plate (12) by screws, so that the flange plate (12) and the fixed frame (3) clamp the inner plate (21) of the container (2) inside and outside.

2. A switch button box structure for a refrigerated container according to claim 1, characterized in that: A sealing groove (122) is provided on the end surface of the flange disc (12) on the side away from the housing (11) and surrounds the flange disc (12). A clamping strip (32) is fixedly connected to the fixed frame (3) in a position and shape corresponding to the sealing groove (122). When the fixed frame (3) is in contact with the flange disc (12), the clamping strip (32) is placed in the sealing groove (122).

3. A switch button box structure for a refrigerated container according to claim 2, characterized in that: A plurality of columns (111) are fixedly connected to the concave cavity of the housing (11) near the opening thereof and extend along the depth direction of the cavity. Each of the columns (111) is provided with a blind hole (1111) for mounting a switch button panel (4).

4. The switch button box structure for a refrigerated container according to claim 1, characterized in that: The flange plate (12) has an extension column (123) extending toward the housing (11) at a position corresponding to each of the first mounting holes (121), and the first mounting holes (121) extend into the extension column (123).

5. The switch button box structure for a refrigerated container according to claim 3, characterized in that: The four inner corners of the fixed frame (3) are horizontally extended diagonally with arc-shaped protruding plates (33), the number of the first mounting holes (121) is the same as the number of the protruding plates (33), and each of the second mounting holes (31) is correspondingly opened on each of the protruding plates (33) of the fixed frame (3), and the switch button panel (4) is provided with an adaptive groove (41) at a position corresponding to each of the protruding plates (33).

6. The switch button box structure for a refrigerated container according to claim 1, characterized in that: The shell (11), flange plate (12) and fixed frame (3) are all made of polycarbonate.

7. A switch button box structure for a refrigerated container according to claim 6, characterized in that: Each of the first mounting holes (121) is distributed in a rectangular shape, and the spacing between the openings is 105mm*105mm.

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