CTB sealing performance testing device

Abstract

The utility model relates to the technical field of sealing test, and discloses a CTB sealing test device, which comprises an upper shell; the lower box body is arranged below the upper shell, the top wall of the lower box body protrudes to form a sealing structure, the top surface of the sealing structure is a transition surface, and the transition surface has different heights relative to the top wall of the lower box body; wherein the upper shell is used for pressing the sealing element against the lower box body, so that at least part of the sealing element is pressed against the transition surface, and the sealing performance of the sealing element under different compression ratios is tested. Therefore, through the arrangement of the sealing structure, the sealing element can abut against the transition surface, so that the sealing element has different compression ratios, and the sealing performance of the sealing element under different compression ratios can be tested. At the moment, the distance between the upper shell and the lower box body does not need to be changed, the testing process is simple, and the testing efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of sealing testing, and in particular to a CTB sealing testing device. Background Art

[0002] CTB technology integrates the vehicle body and battery cover into a single structure, allowing the battery cover to serve as the vehicle floor, simplifying the structure and improving vehicle performance. A sealing structure is installed between the integrated battery cover and the vehicle body to prevent water leakage, and its sealing performance is crucial.

[0003] Currently, to ensure the sealing performance of sealing structures, CTB sealing test equipment is generally used to test the sealing structure's sealing performance. This is mainly done by pressing the sealing structure between upper and lower plates. To test the sealing performance of the sealing structure at different compression rates, the spacing between the upper and lower plates needs to be adjusted to adjust the compression rate, which makes the testing process more complicated and inefficient. Utility Model Content

[0004] In response to the above issues, this application provides a CTB sealing test device. By configuring a sealing structure, the seal can be pressed against the transition surface, thereby achieving different compression rates for the seal, thereby enabling testing of the seal's sealing performance at different compression rates. This eliminates the need to change the spacing between the upper and lower housings, simplifying the testing process and increasing testing efficiency.

[0005] The present application provides a CTB sealing test device, comprising: an upper shell; and a lower box body, disposed below the upper shell body. A sealing structure is formed by a protrusion on the top wall of the lower box body. The top surface of the sealing structure is a transition surface, and the transition surface has a different height relative to the top wall of the lower box body. The upper shell body is used to press a sealing member against the lower box body so that at least a portion of the sealing member presses against the transition surface, thereby testing the sealing performance of the sealing member under different compression rates.

[0006] In some specific embodiments, the sealing member is annular, and when the upper shell presses the sealing member against the lower box body, a sealed cavity is formed between the upper shell body, the sealing member and the lower box body.

[0007] In some specific embodiments, the sealing structure is arranged in a strip shape, and the transition surface forms a first contact surface and a second contact surface arranged in sequence in the length direction of the sealing structure, and the first contact surface is higher than the second contact surface; wherein, when the upper shell presses the seal against the lower box body, the seal presses against the first contact surface and the second contact surface.

[0008] In some specific embodiments, the first contact surface is a plane, the second contact surface is an arcuate surface, the top of the second contact surface is connected to one side of the first contact surface in the length direction of the sealing structure, and the bottom of the second contact surface is connected to the top wall of the lower box body.

[0009] In some specific embodiments, the first contact surface is a plane, and the second contact surface includes a first sub-contact surface and a second sub-contact surface arranged in a plane. The first sub-contact surface and the second sub-contact surface are arranged at intervals along the length direction of the sealing structure, and the first sub-contact surface is higher than the second sub-contact surface.

[0010] In some specific embodiments, the number of the sealing structures is four, and the four sealing structures are respectively arranged on four sides of a rectangle, so that the four sealing structures are arranged in a rectangular shape, and two adjacent sealing structures are spaced apart.

[0011] In some specific embodiments, the outer wall of the sealing structure constitutes a part of the outer wall of the lower box body, a first assembly hole is provided at the corner position of the lower box body, and a second assembly hole is correspondingly provided at the upper shell body, and the first assembly hole and the second assembly hole are used for allowing the connecting part to pass through to realize the connection between the two.

[0012] In some specific embodiments, the CTB sealing test device also includes a lap plate, the bottom wall of the upper shell is recessed upward to form a receiving groove, the lap plate is arranged in the receiving groove, and the bottom surface of the lap plate is flush with the bottom surface of the upper shell; wherein, when the upper shell presses the seal against the lower box body, the lap plate presses on the seal.

[0013] In some specific embodiments, a gap is formed between the side wall of the lap plate and the inner wall of the receiving groove, the gap is filled with sealant, and the gap is in contact with the sealing member.

[0014] In some specific embodiments, the accommodating groove is disposed on a side of the upper shell body close to the side wall thereof, and one side of the accommodating groove passes through the side wall of the upper shell body.

[0015] The present application has at least the following beneficial effects: The CTB sealing test device provided by the present application includes: an upper shell; a lower box body, which is arranged below the upper shell body, and a sealing structure is formed on the top wall of the lower box body. The top surface of the sealing structure is a transition surface, and the transition surface has a different height relative to the top wall of the lower box body; wherein the upper shell body is used to press the seal against the lower box body so that at least part of the seal is pressed against the transition surface to test the sealing performance of the seal under different compression rates. Therefore, by setting the sealing structure, the seal can be pressed against the transition surface, thereby making the seal have different compression rates, and thus the sealing performance of the seal under different compression rates can be tested. At this time, there is no need to change the distance between the upper shell body and the lower box body, the testing process is simple, and the testing efficiency is high.

[0016] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 1 is a schematic structural diagram of an embodiment of a CTB sealing test device provided by the present application;

[0019] Figure 2 yes Figure 1 Schematic diagram of the explosion structure of the CTB sealing test device shown;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of region A in FIG.

[0021] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of area B.

[0022] Explanation of the reference numerals: CTB sealing test device 10, upper shell 11, accommodating groove 111, lower box 12, sealing structure 121, transition surface 1211, first contact surface 1211a, second contact surface 1211b, first assembly hole 122, sealing part 13, connecting part 14, gasket 15, lap plate 16, gap 161.

[0023] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting 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 such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually 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 this application.

[0027] The present application provides a CTB sealing test device 10, Figure 1 1 is a schematic structural diagram of an embodiment of a CTB sealing test device 10 provided in this application. Figure 2 yes Figure 1 FIG. 1 is a schematic diagram of an exploded structure of the CTB sealing test device 10 .

[0028] Combine Figure 1 as well as Figure 2 The CTB sealing test device 10 includes an upper housing 11 and a lower housing 12. A seal 13, serving as a test object, is disposed between the upper housing 11 and the lower housing 12. The upper housing 11 is used to press the seal 13 against the lower housing 12 to test the sealing performance of the seal 13 in a compressed state.

[0029] Among them, the lower box body 12 is arranged below the upper shell body 11, and the lower box body 12 and the upper shell body 11 are a detachable structure. When the sealing test is not performed, the upper shell body 11 can be disassembled from the lower box body 12. When the sealing test is performed, the upper shell body 11 and the lower box body 12 can be connected and installed, and then the seal 13 can be compressed through the upper shell body 11.

[0030] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of area A in FIG.

[0031] Specific combination Figure 1-Figure 3The top wall of the lower housing 12 is raised to form a sealing structure 121. The top surface of the sealing structure 121 is a transition surface 1211, and the transition surface 1211 is at a different height relative to the top wall of the lower housing 12. The top wall of the lower housing 12 can be considered a flat wall. In this case, the sealing structure 121 is arranged on the top wall and thus protrudes relative to the top wall. The sealing structure 121 is actually a protruding structure relative to the top wall. The transition surface 1211 of the sealing structure 121 is not a flat surface, but rather a curved surface, or a combination of a curved surface and a flat surface, so that the transition surface 1211 has a different height relative to the top wall of the lower housing 12.

[0032] During the sealing performance test of seal 13, when upper housing 11 presses seal 13 against lower housing 12, at least a portion of seal 13 presses against transition surface 1211, thereby testing the sealing performance of seal 13 under different compression rates. At this point, when seal 13 presses against the top wall of lower housing 12, the degree of compression of seal 13 is minimal, and the compression rate of seal 13 is relatively low. When seal 13 presses against transition surface 1211, because transition surface 1211 is higher than the top wall of lower housing 12, the degree of compression of seal 13 is relatively high, i.e., the compression rate is relatively high. Furthermore, because transition surface 1211 is at a different height relative to the top wall of lower housing 12, seal 13 experiences different compression rates when pressed against transition surface 1211, thereby enabling testing of the sealing performance of seal 13 under different compression rates.

[0033] It should be understood that the sealing test equipment in the prior art presses the sealing product to be tested against the lower plate through the upper plate, and then the spacing between the upper and lower plates is consistent, that is, the lower plate is not provided with the sealing structure 121 in this patent. When the upper plate presses against the lower plate, the compression rate of the sealing product is consistent at all places. When it is desired to test the sealing performance of the sealing product at different compression rates, it is necessary to change the gap between the upper and lower plates, which is troublesome and the test efficiency is low. In contrast, the present application can make the seal 13 have different compression rates when the upper shell 11 presses the seal 13 against the transition surface, thereby being able to test the sealing performance of the seal 13 at different compression rates without changing the spacing between the upper shell 11 and the lower box body 12.

[0034] Combine Figure 2 In some specific embodiments, the seal 13 is annular. When the upper shell 11 presses the seal 13 against the lower box 12, a sealed cavity is formed between the upper shell 11, the seal 13 and the lower box 12. The seal 13 is a closed annular structure. Figure 2The substantially rectangular configuration is specifically shown in the figure, but is not limited to this configuration in other application scenarios. When the upper housing 11 presses the seal 13 against the lower case 12, a sealed cavity is formed between the bottom wall of the upper housing 11, the seal 13, and the lower case 12 because the bottom wall of the upper housing 11 is a flat wall without hollowing, and the top wall of the lower case 12 is a flat wall without hollowing.

[0035] During the test of the sealing performance of the seal 13, a water test paper can be placed in the sealing cavity, and the CTB sealing test device 10 can be placed in water for a period of time, and then the changes in the test paper can be checked to determine whether water has entered, and then the sealing performance of the seal 13 can be determined.

[0036] Regarding the specific arrangement of the sealing structure 121, in some specific embodiments, the sealing structure 121 is arranged in a strip shape, and the transition surface 1211 forms a first contact surface 1211a and a second contact surface 1211b arranged in sequence in the length direction of the sealing structure 121, and the first contact surface 1211a is higher than the second contact surface 1211b. It should be understood that although the sealing member 13 is arranged in an annular shape, it is also formed by connecting the strip structures end to end. The sealing structure 121 is arranged in a strip structure to facilitate the sealing member 13 to be pressed against the sealing structure 121 in an adaptive manner. Figure 3 The first contact surface 1211 a and the second contact surface 1211 b do not overlap each other when arranged in the length direction of the sealing structure 121 , and the two are connected, and at this time the two constitute a transition surface 1211 .

[0037] In light of the above, when the upper housing 11 presses the seal 13 against the lower housing 12, the seal 13 presses against the first contact surface 1211a and the second contact surface 1211b. Because the first contact surface 1211a is higher than the second contact surface 1211b, the compression rate of the seal 13 is higher when the seal 13 presses against the first contact surface 1211a, and lower when the seal 13 presses against the second contact surface 1211b. Therefore, the seal 13 has different compression rates at these times, thereby verifying the sealing performance of the seal 13 at different compression rates.

[0038] The sealing structure 121 can be roughly arranged in a shape with a high middle and low sides. In this case, the first contact surface 1211a is provided with a second contact surface 1211b on both sides of the sealing structure 121 in the length direction, so that the sealing member 13 has different compression rates at multiple positions.

[0039] Regarding the specific configuration of the first contact surface 1211a and the second contact surface 1211b, in some specific embodiments, the first contact surface 1211a is a plane, in which case the first contact surface 1211a is parallel to the bottom surface of the upper housing 11 and the top surface of the lower housing 12. The second contact surface 1211b is an arcuate surface, with the top of the second contact surface 1211b contacting the first contact surface 1211a on one side of the length direction of the sealing structure 121, and the bottom of the second contact surface 1211b contacting the top wall of the lower housing 12, thereby connecting the first contact surface 1211a to the top wall of the lower housing 12 via the second contact surface 1211b. At this time, when the seal 13 contacts the first contact surface 1211a, the compression rate of the seal 13 is the highest, for example, 80%. When the seal 13 contacts the top wall of the lower housing 12, the compression rate of the seal 13 is the lowest, for example, 20%. When the sealing member 13 contacts the second contact surface 1211 b , the compression rate of the sealing member 13 is between the maximum compression rate and the minimum compression rate, for example, between 20% and 80%.

[0040] It should be understood that by setting the first contact surface 1211a as a plane, the sealing performance of the seal 13 at the maximum compression rate can be tested in detail, and by setting the second contact surface 1211b as an arcuate surface, the sealing performance of the seal 13 at different compression rates can be fully tested.

[0041] Regarding another arrangement of the second contact surface 1211b, in some specific embodiments, the second contact surface 1211b includes a first sub-contact surface and a second sub-contact surface arranged in a plane, the first sub-contact surface and the second sub-contact surface being spaced apart along the length direction of the sealing structure 121, and the first sub-contact surface being higher than the second sub-contact surface. In this case, the second contact surface 1211b is not entirely arranged in an arcuate surface, but is provided with at least two planes, namely the first sub-contact surface and the second sub-contact surface. In this case, the first sub-contact surface and the second sub-contact surface are like two stepped surfaces. In this case, the first sub-contact surface and the first contact surface 1211a can be connected by an arcuate surface, the first sub-contact surface and the second sub-contact surface can be connected by an arcuate surface, and the second sub-contact surface and the top wall of the lower box body 12 can be connected by an arcuate surface.

[0042] It should be understood that by providing a planar first sub-contact surface and a planar second sub-contact surface on the second contact surface 1211b, it is possible to focus on testing the sealing performance of the seal 13 at certain compression rates. For example, in conjunction with the above example, the first sub-contact surface may correspond to a 60% compression rate of the seal 13, and the second sub-contact surface may correspond to a 40% compression rate of the seal 13.

[0043] Regarding the arrangement of the sealing structure 121, combined with Figure 2In some specific embodiments, there are four sealing structures 121, which are arranged on the four sides of a rectangle, with two adjacent sealing structures 121 spaced apart. In this case, the four sealing structures 121 are arranged in a rectangular shape, thereby enabling testing of sealing performance at different compression rates at multiple locations on the seal 13. The spacing between adjacent sealing structures 121 ensures that the ends of the two adjacent sealing structures 121 are spaced apart, allowing the seal 13 to press against the top wall of the lower housing 12, thereby achieving the minimum compression rate.

[0044] Combine Figure 1 as well as Figure 2 In some specific embodiments, the outer wall of the sealing structure 121 constitutes a part of the outer wall of the lower box body 12, that is, the sealing structure 121 is arranged at the side position of the lower box body 12, so as to fully utilize the lower box body 12, so that the sealing structure 121 is fully arranged on the lower box body 12.

[0045] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure of area B.

[0046] Combine Figure 2 as well as Figure 4 , a first assembly hole 122 is provided at the corner position of the lower box body 12, and a second assembly hole is provided correspondingly on the upper shell body 11. The first assembly hole 122 and the second assembly hole are used for the connection member 14 to pass through to achieve the connection between the two. Combined with the above content, that is, the first assembly hole 122 is provided at the interval position of the two sealing structures 121, and the second assembly hole is opposite to the first assembly hole 122. The connection member 14 can be a bolt. After the connection member 14 passes through the first assembly hole 122 and the second assembly hole, the upper shell body 11 and the lower box body 12 are fixed. Continue to combine Figure 2 as well as Figure 4 The CTB sealing test device 10 may also be provided with a gasket 15, through which the connector 14 passes, and the gasket 15 is pressed between the upper shell 11 and the lower box 12. The provision of the gasket 15 maintains a fixed spacing between the upper shell 11 and the lower box 12. This fixed spacing can be obtained by calculation, and the height of the gasket 15 is then set to this fixed spacing.

[0047] Combine Figure 3In some specific embodiments, the CTB sealing test device 10 further includes a connecting plate 16. The bottom wall of the upper housing 11 is recessed upward to form a receiving groove 111. The connecting plate 16 is disposed within the receiving groove 111, with the bottom surface of the connecting plate 16 flush with the bottom surface of the upper housing 11. The connecting plate 16 is not large; when arranged in a rectangular shape, its side length can be slightly larger than the width of the sealing member 13. The shape and size of the receiving groove 111 can match those of the connecting plate 16, thereby ensuring that the connecting plate 16 fits snugly within the receiving groove 111.

[0048] Because the bottom surface of the lap plate 16 is flush with the bottom surface of the upper housing 11, when the upper housing 11 presses the seal 13 against the lower case 12, both the bottom wall of the upper housing 11 and the lap plate 16 press against the seal 13. It should be understood that the provision of the lap plate 16 effectively simulates the pressure exerted by spliced plates of different structures on the seal 13, thereby effectively testing the sealing performance of the seal 13 under actual conditions.

[0049] In some specific embodiments, a gap 161 is formed between the sidewalls of the lap plate 16 and the inner wall of the receiving groove 111. This gap 161 is filled with sealant, and the gap 161 contacts the sealant 13. To ensure that the lap plate 16 fits properly within the receiving groove 111, the dimensions of the receiving groove 111 are slightly larger than those of the lap plate 16. This ensures that after the lap plate 16 is installed, a gap 161 exists between the lap plate 16 and the sidewalls of the receiving groove 111. Filling gap 161 with sealant simulates the actual state of the lap joint structure, making the testing of the sealant 13 more realistic.

[0050] Regarding the specific location of the receiving groove 111, in some specific embodiments, the receiving groove 111 is located on one side of the upper housing 11 near its side wall, and one side of the receiving groove 111 passes through the side wall of the upper housing 11. In this case, the receiving groove 111 is located at the edge of the upper housing 11, and is adapted to the sealing structure 121 located at the edge of the lower case 12.

[0051] In summary, the CTB sealing test device 10 provided in this application includes: an upper shell 11; a lower box 12, which is disposed below the upper shell 11. A sealing structure 121 is formed on the top wall of the lower box 12. The top surface of the sealing structure 121 is a transition surface 1211, and the transition surface 1211 has a different height relative to the top wall of the lower box 12. The upper shell 11 is used to press the seal 13 against the lower box 12, so that at least a portion of the seal 13 presses against the transition surface 1211, thereby testing the sealing performance of the seal 13 under different compression rates. Therefore, by providing the sealing structure 121, the seal 13 can press against the transition surface 1211, thereby giving the seal 13 different compression rates, and thus testing the sealing performance of the seal 13 under different compression rates. In this case, there is no need to change the distance between the upper shell 11 and the lower box 12, which simplifies the testing process and improves testing efficiency.

[0052] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings under the scheme concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A CTB sealing test device, characterized in that: include: upper shell; A lower box body is provided below the upper shell body, wherein a sealing structure is formed by a protrusion on the top wall of the lower box body, and the top surface of the sealing structure is a transition surface, and the transition surface has a different height relative to the top wall of the lower box body; The upper shell is used to press the seal against the lower box, and at least a portion of the seal presses against the transition surface to test the sealing performance of the seal under different compression rates.

2. The CTB sealing test device according to claim 1, characterized in that: The sealing member is annular in shape. When the upper shell presses the sealing member against the lower box body, a sealed cavity is formed among the upper shell body, the sealing member and the lower box body.

3. The CTB sealing test device according to claim 1, characterized in that: The sealing structure is arranged in a strip shape, and the transition surface forms a first contact surface and a second contact surface arranged in sequence in the length direction of the sealing structure, and the first contact surface is higher than the second contact surface; When the upper shell presses the sealing member against the lower box body, the sealing member presses against the first contact surface and the second contact surface.

4. The CTB sealing test device according to claim 3, characterized in that: The first contact surface is a plane, the second contact surface is an arcuate surface, the top of the second contact surface is connected to the first contact surface on one side of the length direction of the sealing structure, and the bottom of the second contact surface is connected to the top wall of the lower box body.

5. The CTB sealing test device according to claim 3, characterized in that: The first contact surface is a plane, and the second contact surface includes a first sub-contact surface and a second sub-contact surface arranged in a plane. The first sub-contact surface and the second sub-contact surface are arranged at intervals along the length direction of the sealing structure, and the first sub-contact surface is higher than the second sub-contact surface.

6. The CTB sealing test device according to claim 3, characterized in that: The number of the sealing structures is four, and the four sealing structures are respectively arranged on the four side lines of a rectangle, so that the four sealing structures are arranged in a rectangular shape, and two adjacent sealing structures are spaced apart.

7. The CTB sealing test device according to claim 6, characterized in that: The outer wall of the sealing structure constitutes a part of the outer wall of the lower box body. A first assembly hole is provided at the corner position of the lower box body, and a second assembly hole is correspondingly provided on the upper shell body. The first assembly hole and the second assembly hole are used for the connecting part to pass through to realize the connection between the two.

8. The CTB sealing test device according to claim 1, characterized in that: The CTB sealing test device further includes a lap plate, the bottom wall of the upper shell is recessed upward to form a receiving groove, the lap plate is disposed in the receiving groove, and the bottom surface of the lap plate is flush with the bottom surface of the upper shell; Wherein, when the upper shell presses the sealing member against the lower box body, the lap plate presses against the sealing member.

9. The CTB sealing test device according to claim 8, characterized in that: A gap is formed between the side wall of the lap plate and the inner wall of the accommodating groove. The gap is filled with sealant, and the gap is in contact with the sealing member.

10. The CTB sealing test device according to claim 8, characterized in that: The accommodating groove is arranged on one side of the upper shell body close to the side wall thereof, and one side of the accommodating groove passes through the side wall of the upper shell body.

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