Inner box and environmental test box

Abstract

The invention relates to the technical field of environmental test equipment, and provides an inner box and an environmental test box. The side plates are arranged in one-to-one correspondence with the circumferential end face of the back plate, the back plate and the side plates define a containing space, each side plate comprises a main body part and a bent part, the bent parts are symmetrically arranged at the two ends of the main body part in the circumferential direction of the back plate, and the bent parts and the main body part are arranged in an included angle mode; the side plates comprise the left side plate, the right side plate, the top plate and the bottom plate, the top plate and the bottom plate are arranged at intervals in the vertical direction, the left side plate and the right side plate are each provided with a grid disc support, the grid disc supports are arranged in the containing space, and the two ends of each grid disc support abut against and are fixed to the bent portion of the top plate and the bent portion of the bottom plate respectively. Therefore, on the premise that the structural strength of the box body is maintained, the number of reinforcing ribs is reduced, the using amount of materials is reduced, and cost is saved.

Description

[0001] This application is a divisional application of a patent application with an application date of February 10, 2023, application number CN202310094953.8, and invention name “Inner Box and Environmental Test Chamber”. Technical Field

[0002] The present invention relates to the technical field of environmental testing equipment, and in particular to an inner box and an environmental testing box. Background Art

[0003] The simulated climate environment test chamber (hereinafter referred to as the test chamber) can simulate one or more climate and environmental conditions in nature. It mainly tests the product's resistance to high and low temperatures, humidity, etc. It is an essential test equipment in the fields of aviation, automobiles, home appliances, scientific research, etc. It is used to test and determine the parameters and performance of electrical, electronic and other products and materials after temperature changes in high temperature, low temperature, high humidity, dryness or constant tests.

[0004] like Figures 1 to 3 As shown, the common inner box is provided with U-shaped reinforcing ribs 61 to strengthen the strength of the joint surface and prevent the side panel 10 from being sunken into the inner side of the accommodating space 40 due to the excessive hanging area or the large span and the limited load capacity of the side panel 10 itself. The U-shaped reinforcing ribs 61 are generally provided on the outer peripheral side of the inner box to avoid occupying the accommodating space 40. However, such provision of reinforcing ribs, on the one hand, is likely to cause interference with the nested installation of the outer box and the inner box, making the gap between the inner box and the outer box larger, and more insulation materials are required for filling; on the other hand, since an insulation layer needs to be provided between the inner and outer boxes, when the insulation layer is laid out, due to the provision of the U-shaped reinforcing ribs 61, the side panel 10 is divided into several areas by the U-shaped reinforcing ribs 61, and the insulation materials need to be processed into corresponding shapes or sizes and filled one by one, which affects the efficiency of the insulation material filling operation.

[0005] Therefore, an inner box and an environmental test box are urgently needed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide an inner box and an environmental test box, which can reduce the setting of reinforcing ribs, reduce the amount of material used, and save costs while maintaining the structural strength of the box.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Inner box, including:

[0009] Side plates and back plates, the plurality of side plates are arranged one by one corresponding to the circumferential end surfaces of the back plates, the back plates and the side plates are enclosed to form an accommodation space, the side plates include a main body and a bent portion, along the circumference of the back plates, the two ends of the main body are symmetrically provided with the bent portions, and the bent portions are arranged at an angle with the main body;

[0010] The above-mentioned side panels include a left side panel, a right side panel, a top panel and a bottom panel. The above-mentioned top panel and the above-mentioned bottom panel are spaced apart in the vertical direction. The above-mentioned left side panel and the above-mentioned right side panel are both equipped with a grid support. The above-mentioned grid support is arranged in the above-mentioned accommodating space, and the two ends of the above-mentioned grid support are respectively abutted and fixed to the above-mentioned bending portion of the above-mentioned top panel and the above-mentioned bending portion of the above-mentioned bottom panel.

[0011] As a preferred technical solution of the inner box, the angle between the bending portion and the main body is in the range of 120°-150°.

[0012] As a preferred technical solution of the inner box, the bending portion includes a connecting section and a bending section, the main body is connected to the connecting section via the bending section, along the circumference of the back plate, the connecting sections of the two adjacent side plates are fitted and fixed, and the bending sections of the two adjacent side plates are arranged in the same plane; the main body is provided with a folded connecting portion on one end away from the back plate and on a side facing away from the accommodating space;

[0013] A connecting piece, wherein two ends of the connecting piece arranged along the circumference of the back plate are respectively connected to the folded connecting portions of the two adjacent side plates, and an end surface close to one side of the accommodating space is attached to and fixed to the bent section.

[0014] As a preferred technical solution for the above-mentioned inner box, the above-mentioned bending section includes a first bending section connected to the main body and a second bending section arranged near one end of the above-mentioned folding connection portion, the above-mentioned second bending section is connected to the above-mentioned first bending section and is arranged at an angle, the above-mentioned connecting piece is adapted to have a slot opened at one end near the above-mentioned second bending section, and the above-mentioned second bending section is plugged into the above-mentioned slot.

[0015] As a preferred technical solution of the inner box, it further includes a Z-shaped reinforcing rib, which is arranged on the side panel and outside the accommodating space.

[0016] An environmental test box is also provided, comprising an outer box and the inner box, wherein the outer box and the inner box are nested.

[0017] As a preferred technical solution of the above-mentioned environmental test box, a heat-insulating layer is sandwiched between the above-mentioned outer box and the above-mentioned inner box.

[0018] As a preferred technical solution of the above-mentioned environmental test chamber, it also includes a heat insulation plate, and the above-mentioned folded connection part of the above-mentioned side plate is provided with a threaded hole, and the fastener passes through the above-mentioned heat insulation plate and is threadedly connected with the above-mentioned threaded hole.

[0019] As a preferred technical solution of the above-mentioned environmental test box, it also includes a detection unit, the above-mentioned main body of the above-mentioned inner box is provided with a first installation hole, and the sensing part of the above-mentioned detection unit extends into the above-mentioned accommodating space from the above-mentioned first installation hole.

[0020] As a preferred technical solution of the environmental test chamber, it further includes a fan, the main body of the inner box is further provided with a second mounting hole, and the output terminal of the fan extends into the accommodating space through the second mounting hole.

[0021] Beneficial effects of the present invention:

[0022] An inner box is provided, comprising side panels, a back panel and a grid support. A plurality of side panels are arranged one by one with the circumferential end surface of the back panel, the back panel and the side panels are enclosed to form an accommodation space, the side panels comprise a main body and a bent portion, the bent portions are symmetrically arranged at both ends of the main body along the circumference of the back panel, and the bent portions are arranged at an angle with the main body; the side panels comprise a left side panel, a right side panel, a top panel and a bottom panel, the top panel and the bottom panel are arranged at intervals in the vertical direction, the left side panel and the right side panel are both installed with a grid support, the grid support is arranged in the accommodation space, and the two ends of the grid support are respectively abutted and fixed with the bent portions of the top panel and the bent portions of the bottom panel.

[0023] In this embodiment, the inner box is a hexahedron, including a back plate, four side plates, namely the left side plate, the right side plate, the top plate and the bottom plate, and four connecting plates. Each side plate is formed by bending a stainless steel plate, and the side plate includes a main body and a straight plate-shaped bending portion. Two side plates adjacent to each other along the circumference of the back plate are connected by the bending portion to enclose a receiving space with the back plate, and the bending portion is bent toward the inside of the receiving space relative to the main body; the inner box also includes a grid support, which generally extends in the vertical direction, and the two grid supports are symmetrically installed on the left side plate and the right side plate, and the grid support is provided with plug-in holes in sequence and at intervals along the vertical direction for plugging with the plug blocks on the opposite sides of the grid, supporting the relative position of the grid in the receiving space. The two ends of the grid bracket in the accommodating space are fixed to the bending parts in the same direction respectively along the vertical direction. Such an arrangement enables the grid bracket to retain the original ability to support the loading plate and also have the ability to support the left side panel and the right side panel, thereby reducing the setting of reinforcing ribs, reducing the use of materials and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of an inner box disclosed in the prior art;

[0026] Figure 2 is a front view of an inner box disclosed in the prior art;

[0027] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0028] Figure 4 is a schematic structural diagram of an inner box provided by an embodiment of the present invention;

[0029] Figure 5 is a front view of an inner box provided by an embodiment of the present invention;

[0030] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0031] Figure 7 is a schematic structural diagram of a side panel (right) provided in an embodiment of the present invention;

[0032] Figure 8 yes Figure 7 A partial enlarged view of point C in the middle;

[0033] Fig. 9 It is a schematic structural diagram of a side panel (top) provided in an embodiment of the present invention.

[0034] In the figure:

[0035] 10. side plate; 11. main body; 12. bending portion; 121. connecting section; 122. bending section; 1221. first bending section; 1222. second bending section; 13. folded connecting portion; 131. threaded hole; 14. first mounting hole; 15. second mounting hole;

[0036] 20. back plate; 30. connecting piece; 40. accommodation space;

[0037] 50. Grid support; 51. Plug-in hole; 60. Z-shaped reinforcement rib; 61. U-shaped reinforcement rib. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figure 4-9As shown, the present application provides an inner box, including side panels 10, a back panel 20 and a connecting piece 30. Among them, a plurality of side panels 10 are arranged in a one-to-one correspondence with the circumferential end faces of the back panel 20, and the back panel 20 and the side panels 10 are enclosed to form a containing space 40. The side panels 10 include a main body 11 and a bent portion 12. Along the circumference of the back panel 20, the two ends of the main body 11 are symmetrically provided with the bent portions 12. The bent portions 12 are arranged at an angle with the main body 11. The bent portion 12 includes a connecting section 121 and a bent section 122. The main body 11 is connected to the connecting section 121 through the bent section 122. In the circumferential direction of the back panel 20, after the connecting sections 121 of two adjacent side panels 10 are attached and fixed, the bending sections 122 of the two adjacent side panels 10 are arranged in the same plane; a folding connecting portion 13 is arranged on the side of the main body 11 away from the end of the back panel 20 and facing away from the accommodating space 40; the two ends of the connecting piece 30 arranged along the circumferential direction of the back panel 20 are respectively connected to the folding connecting portions 13 of the two adjacent side panels 10, and the end face close to the side of the accommodating space 40 is attached and fixed to the bending section 122.

[0043] In this embodiment, the inner box is a hexahedron, including a back plate 20, four side plates 10 and four connecting pieces 30. Each side plate 10 is formed by bending a stainless steel plate. The side plate 10 includes a main body 11 and a straight plate-shaped bending portion 12. The bending portion 12 is bent toward the inside of the accommodating space 40 relative to the main body 11. The bending portion 12 includes a mutually perpendicular bending section 122 and a connecting section 121. Two side plates 10 adjacent to each other along the circumference of the back plate 20 are connected by the bending portion 12. After the two side plates 10 are aligned, the adjacent connecting sections 121 are parallel to each other. After the two connecting sections 121 are attached and fixed, the corresponding two bending sections 122 are located in the same plane. At this time, the two bending portions 12 are spliced ​​into the chamfers of the two adjacent side plates 10, and the chamfers are right-angle chamfers. The folded connecting portion 13 is an outer flange structure of the side plate 10, which is used to abut and fix with the end face of the outer box. After the side panels 10 are connected, fan-shaped gaps are bound to appear between adjacent folded connection portions 13. The connecting piece 30 is used to fill the fan-shaped gaps. The connecting piece 30 is welded and fixed to the adjacent folded connection portions 13 along the circumferential ends of the back panel 20, and the end face close to the side of the accommodating space 40 is adhered and welded to the bending section 122.

[0044] With such arrangement, after the two adjacent side panels 10 are connected, the two bending portions 12 form a chamfer between the two side panels 10, and along the axial direction of the back panel 20, the edge line of the chamfer is a straight line. When the connecting piece 30 is installed, the contact surface between the connecting piece 30 and the bending portion 12 is a plane, which is convenient for welding. In addition, since the connection position between the connecting piece 30 and the bending portion 12 is a plane that has not been bent, the welding plane maintains the original sheet thickness and does not become thinner due to the bending process, so the bending section 122 will not be welded through during the welding process, resulting in the problem of scrapping the material. Moreover, in the actual production process, only a flat bending knife is needed to complete the processing of the bending portion 12 and the flanging connection portion on the side panel 10, and there is no need to switch to an arc bending knife when processing the bending portion 12 to perform arc chamfering, which also speeds up production efficiency. Of course, since the processing precision of the arc chamfer is low, the use of right-angle chamfering also ensures the processing quality of the product.

[0045] Optionally, the angle between the bending portion 12 and the main body 11 ranges from 120° to 150°.

[0046] Preferably, the angle between the bending portion 12 and the main body 11 is 135°.

[0047] Specifically, the angle between the folded connecting portion 13 and the main body 11 is 90°.

[0048] Furthermore, the connecting section 121 extends to a side away from the accommodating space 40 and protrudes from the bent section 122 for easy welding. After two adjacent connecting sections 121 are welded together, the strength of the inner box is increased.

[0049] Optionally, the bending section 122 includes a first bending section 1221 connected to the main body 11 and a second bending section 1222 disposed near one end of the folding connection portion 13, the second bending section 1222 is connected to the first bending section 1221 and disposed at an angle, a slot is adapted to be provided at one end of the connecting piece 30 near the second bending section 1222, and the second bending section 1222 is plugged into the slot. With such a configuration, the contact area between the connecting piece 30 and the bending portion 12 is increased by plugging the second bending section 1222 into the connecting piece 30, so that the connecting piece 30 can be more firmly fixed to the bending portion 12, and further, the bending relationship between the folding connection portion 13 and the main body 11 is more stable.

[0050] Preferably, the second bending section 1222 and the first bending section 1221 form an angle of 90°.

[0051] like Figure 1As shown, the common inner box is provided with U-shaped reinforcing ribs 61 to strengthen the strength of the joint surface and prevent the side panel 10 from being sunken into the inner side of the accommodating space 40 due to the side panel 10 having too large a suspended area or too large a span and the side panel 10 having limited load capacity. The U-shaped reinforcing ribs 61 are generally provided on the outer peripheral side of the inner box to avoid occupying the accommodating space 40. However, such provision of reinforcing ribs, on the one hand, is likely to cause interference with the nested installation of the outer box and the inner box, making the gap between the inner box and the outer box larger, and more insulation materials are required for filling; on the other hand, since an insulation layer needs to be provided between the inner and outer boxes, when the insulation layer is laid out, due to the provision of the U-shaped reinforcing ribs 61, the side panel 10 is divided into several areas by the U-shaped reinforcing ribs 61, and the insulation materials need to be processed into corresponding shapes or sizes and filled one by one, which affects the efficiency of the insulation material filling operation.

[0052] like Figure 2 As shown, a grid support 50 is also provided in the environmental test chamber. The grid support 50 generally extends in the vertical direction, and two grid supports 50 are symmetrically installed on the left side panel and the right side panel. The grid support 50 is provided with plug holes 51 in sequence and at intervals in the vertical direction for plugging with plug blocks on opposite sides of the grid, so as to support the relative position of the grid in the accommodating space 40.

[0053] like Figure 4-6 As shown, optionally, the side plate 10 includes a left side plate, a right side plate, a top plate and a bottom plate, the top plate and the bottom plate are arranged at intervals in the vertical direction, and the left side plate and the right side plate are both installed with a grid support 50, the grid support 50 is arranged in the accommodating space 40, and the two ends of the grid support 50 are respectively abutted and fixed with the bending portion 12 of the top plate and the bending portion 12 of the bottom plate. The original grid support 50 in the accommodating space 40 is extended in the vertical direction until the two ends are respectively fixed with the bending portion 12 in the same direction. In this way, the grid support 50 retains the original ability to support the loading plate, and has the ability to support the left side plate and the right side plate, reduces the setting of reinforcing ribs, reduces the use of materials, and saves costs.

[0054] Furthermore, the grid support 50 is welded and fixed to the main body 11 of the side wall 10. Such an arrangement can reduce the number of openings in the box side wall 10, eliminate the risk of water vapor leakage, and simplify the structure, facilitate manufacturing and save materials.

[0055] Optionally, the environmental test box further includes a Z-shaped reinforcing rib 60, which is disposed on the side panel and outside the accommodating space 40. In order to reduce the area division of the plane and facilitate the layout of the insulation layer, the present application adopts the Z-shaped reinforcing rib 60, and according to user feedback, the Z-shaped reinforcing rib 60 has higher strength than the U-shaped reinforcing rib 61.

[0056] According to the test, the best effect is achieved when the thickness of the insulation layer is set to 30 mm. Correspondingly, the height of the Z-shaped reinforcement rib 60 is also set to 30 mm to reduce the gap between the inner box and the outer box. At the same time, the insulation material does not need to make additional avoidance design for the reinforcement rib.

[0057] The present application also provides an environmental test box, comprising an outer box and the inner box mentioned above, wherein the outer box and the inner box are nested.

[0058] Environmental test chambers can simulate one or more environmental conditions in nature, and are mainly used to test the ability of products to withstand high or low temperatures. Therefore, the chamber body needs to have certain thermal insulation properties. Optionally, an insulation layer is sandwiched between the outer box and the inner box.

[0059] Specifically, the insulation layer is filled with thermal insulation cotton.

[0060] Optionally, the environmental test box further includes a heat insulation board, and the folded connection portion 13 of the side panel 10 is provided with a threaded hole 131 , and the fastener passes through the heat insulation board and is threadedly connected to the threaded hole 131 .

[0061] Optionally, the environmental test box further includes a detection unit, and a first mounting hole 14 is formed in the main body 11 of the inner box, and a sensing portion of the detection unit extends from the first mounting hole 14 into the accommodating space 40 .

[0062] Specifically, the first mounting hole 14 is opened in the main body portion 11 of the left side plate and / or the main body portion 11 of the right side plate.

[0063] Specifically, the detection unit includes a temperature detection unit, a humidity detection unit or a detection unit of other indicators.

[0064] Optionally, the environmental test box further includes a fan, and the main body 11 of the inner box is further provided with a second mounting hole 15 , and the output terminal of the fan extends into the accommodating space 40 through the second mounting hole 15 .

[0065] Specifically, the second mounting hole 15 is opened in the main body 11 of the top plate.

[0066] Furthermore, the environmental test box can also be used to test the moisture resistance of the inner box, and a sealing layer is provided between the inner box and the outer box. Specifically, the sealing ring is installed between the folded connecting portion 13 of the inner box and the same side end surface of the outer box.

[0067] Furthermore, a decorative plate may be installed between the folded connection portion 13 of the inner box and the end surface on the same side of the outer box.

[0068] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Inner box, characterized in that, include: A side plate (10) and a back plate (20), wherein a plurality of the side plates (10) and the circumferential end surfaces of the back plate (20) are arranged in one-to-one correspondence, the back plate (20) and the side plates (10) enclose a receiving space (40), the side plates (10) comprising a main body (11) and a bent portion (12), the bent portions (12) being symmetrically arranged at both ends of the main body (11) along the circumference of the back plate (20), and the bent portions (12) being arranged at an angle with the main body (11); The side plate (10) comprises a left side plate, a right side plate, a top plate and a bottom plate, the top plate and the bottom plate are arranged at intervals in the vertical direction, the left side plate and the right side plate are both installed with a grid support (50), the grid support (50) is arranged in the accommodating space (40), and the two ends of the grid support (50) are respectively abutted and fixed to the bent portion (12) of the top plate and the bent portion (12) of the bottom plate.

2. The inner box according to claim 1, characterized in that: The angle between the bending portion (12) and the main body (11) ranges from 120° to 150°.

3. The inner box according to claim 1, characterized in that: The bending portion (12) comprises a connecting section (121) and a bending section (122); the main body (11) and the connecting section (121) are connected via the bending section (122); along the circumference of the back plate (20), the connecting sections (121) of two adjacent side plates (10) are fitted and fixed, and the bending sections (122) of two adjacent side plates (10) are arranged on the same plane; a folded connecting portion (13) is arranged on one end of the main body (11) away from the back plate (20) and on a side facing away from the accommodating space (40); A connecting piece (30), wherein the two ends of the connecting piece (30) arranged along the circumference of the back plate (20) are respectively connected to the folded connecting portions (13) of the two adjacent side plates (10), and the end surface close to the side of the accommodating space (40) is attached to and fixed to the bent section (122).

4. The inner box according to claim 3, characterized in that: The bending section (122) comprises a first bending section (1221) connected to the main body (11) and a second bending section (1222) arranged near one end of the folded connection section (13); the second bending section (1222) is connected to the first bending section (1221) and arranged at an angle; the connecting piece (30) is adapted to have a slot at one end near the second bending section (1222); the second bending section (1222) is plugged into the slot.

5. The inner box according to claim 3, characterized in that: It also includes a Z-shaped reinforcing rib (60), which is arranged on the side plate (10) and located outside the accommodating space (40).

6. Environmental test chamber, characterized in that, It comprises an outer box and the inner box according to any one of claims 1 to 5, wherein the outer box and the inner box are nested.

7. The environmental test chamber according to claim 6, characterized in that: A heat-insulating layer is sandwiched between the outer box and the inner box.

8. The environmental test chamber according to claim 6, characterized in that: It also comprises a heat insulation board, wherein the folded connection portion (13) of the side board (10) is provided with a threaded hole (131), and a fastener passes through the heat insulation board and is threadedly connected to the threaded hole (131).

9. The environmental test chamber according to claim 6, characterized in that: It also includes a detection unit, wherein the main body (11) of the inner box is provided with a first mounting hole (14), and the sensing part of the detection unit extends from the first mounting hole (14) into the accommodating space (40).

10. The environmental test chamber according to claim 6, characterized in that: It also includes a fan, and the main body (11) of the inner box is also provided with a second mounting hole (15), and the output terminal of the fan extends into the accommodating space (40) through the second mounting hole (15).

Images