Airtight test tool
By using a pressure-holding component to fix the seal and the upper clamp in the airtightness testing fixture, the problem of sealant failure was solved, and the seal was made removable and replaceable, improving the ease of maintenance and cleaning of the equipment.
Patent Information
- Application Number
- CN202520507076.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing airtightness testing fixtures, the sealant is prone to failure during use, resulting in gaps between the sealant and the upper fixture, affecting the sealing effect, and making replacement and cleaning difficult.
A pressure-holding component is used instead of sealant to fix the seal and the upper clamp. Through the combination of pressure plate and fixing component, the seal is made removable and replaceable, avoiding seal failure due to increased use time or frequency.
It improves the service life of seals and upper clamps, simplifies maintenance and cleaning processes, and extends the service life of equipment.
Smart Images
Figure CN223889832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery processing equipment technology, and more specifically, to an airtightness testing fixture. Background Technology
[0002] The current airtightness testing fixture consists of an upper fixture, a silicone gasket, and a lower fixture. The upper fixture and the silicone gasket are bonded together with sealant to prevent the gasket from falling off. During the use of the airtightness testing fixture, the seal is achieved by compressing the silicone gasket.
[0003] During compression, the silicone pad deforms, causing tension between it and the groove on the upper clamp's sealing gasket. With increased usage time and frequency, the sealant between the clamp and the silicone pad may fail, leading to issues such as the silicone pad detaching, gaps forming between the pad and the clamp, and seal failure.
[0004] Meanwhile, as the number of times the silicone pad comes into contact with the sample increases or as the time ages, the silicone pad seal fails. When replacing the silicone pad, it is difficult to remove the adhesive, and if there is any adhesive residue, it will cause dust to accumulate between the silicone pad and the upper groove, leading to seal failure. Utility Model Content
[0005] The purpose of this utility model is to provide an airtightness testing fixture that can prevent the sealant between the upper clamp and the sealing element from failing due to increased usage time or number of uses, and is easy to disassemble and maintain.
[0006] The embodiments of this utility model can be implemented as follows:
[0007] In a first aspect, this utility model provides an airtightness testing fixture, comprising:
[0008] The upper clamp has an upper mating surface and an upper groove, the upper groove is disposed on the upper mating surface, and a sealing element is detachably disposed in the upper groove;
[0009] The lower clamp has a lower mating surface, and the upper mating surface is disposed opposite to the lower mating surface;
[0010] A retaining element is used to fix the seal and the upper clamp.
[0011] In an optional embodiment, the pressing member includes at least one pressing plate and a fixing member, the pressing plate pressing the seal onto the upper clamp, and the fixing member fixing the pressing plate to the upper clamp to fix the seal and the upper clamp;
[0012] Alternatively, the holding member may include a fixing member for securing the seal and the upper clamp.
[0013] In an optional embodiment, the thickness of the seal is greater than or equal to the height of the upper groove;
[0014] The surface of the fastener after locking is flush with the upper mating surface; or the surface of the fastener after locking is lower than the upper mating surface.
[0015] In an optional embodiment, a portion of the pressing plate is connected to the sealing member, and another portion of the pressing plate is connected to the upper clamp, with the fixing member securing the other portion of the pressing plate to the upper clamp;
[0016] Alternatively, all of the pressure plates are connected to the sealing element, and the fixing element secures the pressure plates and the sealing element to the upper clamp.
[0017] In an optional embodiment, the outer edge of the seal is provided with a first mating groove, the upper clamp is provided with a second mating groove, and the pressure plate is mated in the first mating groove and the second mating groove.
[0018] In an optional embodiment, another portion of the pressing plate is provided with a first mating hole, and the second mating groove is provided with a second mating hole. The fixing member passes through the first mating hole and the second mating hole in sequence to fix the sealing member on the upper clamp.
[0019] In an optional embodiment, the thickness of the seal is greater than the height of the first mating groove, and the thickness of the pressure plate, the height of the first mating groove, and the height of the second mating groove are all equal.
[0020] In an optional embodiment, the airtightness testing fixture is used to test the airtightness of the battery top cover, and the upper surface of the top cover is provided with at least a positive terminal post, an explosion-proof valve, and a negative terminal post.
[0021] The upper surface of the top cover is in contact with the surface of the sealing element, and the lower clamp is provided with a lower groove, which is configured to fit the lower surface of the top cover.
[0022] In an optional embodiment, the upper clamp is provided with at least three first detection grooves, the at least three first detection grooves are disposed in the upper groove, and the sealing member is provided with at least three second detection grooves relative to the at least three first detection grooves;
[0023] The at least three of the first and second detection grooves are in contact with at least the positive terminal, the explosion-proof valve, and the negative terminal.
[0024] In an optional embodiment, the upper clamp is provided with at least one vent hole, and the at least one vent hole is in communication with all three first detection grooves;
[0025] The lower clamp has at least two positioning posts on its lower mating surface, and the upper clamp has at least two positioning slots on its upper mating surface. The at least two positioning posts and the at least two positioning slots are arranged opposite to each other so that the upper clamp and the lower clamp can be installed together.
[0026] The beneficial effects of the airtightness testing fixture provided in this embodiment of the invention include:
[0027] By incorporating a retaining element to fix the sealant and upper clamp instead of the sealant used in existing technologies, the sealant between the upper clamp and the sealant is prevented from failing due to increased usage time or frequency, thus avoiding seal failure caused by gaps between the sealant and the upper clamp. Furthermore, when cleaning the sealant is required, it can be disassembled from the upper clamp, facilitating cleaning of both the upper clamp and the sealant and extending the service life of the upper clamp, lower clamp, and sealant. When sealant replacement is needed, the retaining element can be released from its limiting position on the sealant and upper clamp, allowing for easy disassembly and replacement, thus simplifying maintenance. Attached Figure Description
[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the airtightness testing fixture provided in this embodiment;
[0030] Figure 2 Exploded views of the upper clamp, seal, and pressure-holding member provided in this embodiment;
[0031] Figure 3 This is a cross-sectional view of the upper clamp, seal, and pressure member before they are assembled, as provided in this embodiment.
[0032] Figure 4 This is a cross-sectional view of the upper clamp, seal, and pressure holder after assembly, as provided in this embodiment.
[0033] Icons: 010 - Air tightness testing fixture; 100 - Upper clamp; 110 - Upper mating surface; 120 - Upper groove; 130 - First inspection groove; 140 - Vent hole; 141 - First connector; 150 - Positioning groove; 160 - Second mating groove; 161 - Second mating hole; 200 - Seal; 210 - Second inspection groove; 220 - First mating groove; 300 - Lower clamp; 310 - Lower mating surface; 320 - Lower groove; 330 - Positioning post; 340 - Second connector; 400 - Holding member; 410 - Pressing plate; 411 - First mating hole; 420 - Fixing member. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0037] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0038] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0039] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0040] The following describes in detail the overall structure, working principle, and technical effects of the airtightness testing fixture 010 provided by this utility model through embodiments and in conjunction with the accompanying drawings.
[0041] Please refer to Figure 1 The airtightness testing fixture 010 provided by this utility model is used to test the airtightness of the battery top cover.
[0042] Please refer to Figure 1 The airtightness testing fixture 010 proposed in this utility model includes:
[0043] The upper clamp 100 is provided with an upper mating surface 110 and an upper groove 120. The upper groove 120 is provided on the upper mating surface 110, and a sealing element 200 is detachably provided in the upper groove 120.
[0044] The lower clamp 300 has a lower mating surface 310 and an upper mating surface 110 that is opposite to the lower mating surface 310.
[0045] The clamping member 400 is used to fix the seal 200 and the upper clamp 100.
[0046] Understandably, by using the retaining element 400 to fix the sealant 200 and the upper clamp 100 instead of the sealant in the prior art, the sealant between the upper clamp 100 and the sealant 200 is prevented from failing due to increased usage time or frequency, thus preventing seal failure caused by gaps between the sealant 200 and the upper clamp 100. Simultaneously, when cleaning the sealant 200 is required, it can be disassembled from the upper clamp 100, facilitating cleaning of both the upper clamp 100 and the sealant 200 and extending the service life of the upper clamp 100, lower clamp 300, and sealant 200. When replacing the sealant 200, the retaining element 400 can be released from its limiting position on the sealant 200 and the upper clamp 100, allowing for easy disassembly and replacement, thus simplifying maintenance.
[0047] In this embodiment, the airtightness testing fixture 010 includes an upper clamp 100.
[0048] In this embodiment, please refer to Figures 1-2 The upper clamp 100 is provided with an upper mating surface 110 and an upper groove 120. The upper groove 120 is disposed on the upper mating surface 110, and a sealing element 200 is detachably disposed in the upper groove 120. The upper surface of the top cover is in contact with the surface of the sealing element 200.
[0049] In this case, the sealing element 200 is a rectangular silicone pad, and the upper groove 120 is a rectangular groove.
[0050] The thickness of the seal 200 is greater than or equal to the height of the upper groove 120. The thickness of the seal 200 is greater than the height of the upper groove 120 so that the surface of the seal 200 is higher than the upper mating surface 110; the thickness of the seal 200 is equal to the height of the upper groove 120 so that the surface of the seal 200 is flush with the upper mating surface 110.
[0051] In this embodiment, please refer to Figures 2-4 To accommodate the positive terminal, explosion-proof valve, and negative terminal on the upper surface of the top cover, the upper clamp 100 is provided with at least three first detection grooves 130, which are disposed within the upper groove 120. The sealing member 200 is provided with at least three second detection grooves 210 relative to the at least three first detection grooves 130. The at least three first detection grooves 130 and the second detection grooves 210 at least mate with the positive terminal, the explosion-proof valve, and the negative terminal.
[0052] Alternatively, please refer to Figures 2-3 The upper clamp 100 is provided with at least one vent hole 140, and the at least one vent hole 140 is connected to at least three first detection grooves 130. In this embodiment, the upper clamp 100 is provided with three vent holes 140, and the three vent holes 140 are respectively connected to three first detection grooves 130; at the same time, the three vent holes 140 can be provided on any surface of the upper clamp 100 other than the upper mating surface 110. A first connector 141 is provided on each of the three vent holes 140.
[0053] In this embodiment, the airtightness testing fixture 010 includes a lower clamp 300.
[0054] In this embodiment, please refer to Figure 1 The lower clamp 300 is provided with a lower mating surface 310 and a lower groove 320, the upper mating surface 110 is arranged opposite to the lower mating surface 310; the upper groove 120 is arranged opposite to the upper groove 120, and the lower groove 320 is arranged to mate with the lower surface of the top cover.
[0055] In this embodiment, in order to achieve the assembly and positioning of the upper clamp 100 and the lower clamp 300, please refer to... Figures 1-2 The lower clamp 300 has at least two positioning pins 330 on its lower mating surface 310, and the upper clamp 100 has at least two positioning grooves 150 on its upper mating surface 110. The at least two positioning pins 330 and the at least two positioning grooves 150 are arranged opposite to each other so that the upper clamp 100 and the lower clamp 300 can be installed together.
[0056] The lower clamp 300 is also provided with a vent 140 that communicates with the lower groove 320, and a second connector 340 is provided at the vent 140.
[0057] In this embodiment, the airtightness testing fixture 010 includes a pressure holding member 400.
[0058] The clamping member 400 is used to fix the seal 200 and the upper clamp 100.
[0059] In this embodiment, please refer to Figures 2-4 The holding member 400 includes at least one pressing plate 410 and a fixing member 420. The pressing plate 410 presses the sealing member 200 onto the upper clamp 100, and the fixing member 420 fixes the pressing plate 410 to the upper clamp 100 to fix the sealing member 200 and the upper clamp 100.
[0060] Of course, in other alternative embodiments, the clamping member 400 may also include only the fixing member 420, which is used to fix the seal 200 and the upper clamp 100.
[0061] In this embodiment, part of the pressing plate 410 is connected to the sealing member 200, and another part of the pressing plate 410 is connected to the upper clamp 100. The fixing member 420 fixes the other part of the pressing plate 410 to the upper clamp 100. It can be understood that the sealing member 200 is pressed tightly into the upper groove 120 by part of the pressing plate 410, and the other part of the pressing plate 410 is fixed to the upper clamp by the fixing member 420, so that the sealing member 200 can be fixed on the upper clamp 100.
[0062] In other embodiments, all the pressing plates 410 can be connected with the sealing member 200, and the fixing member 420 can fix the pressing plates 410 and the sealing member 200 to the upper clamp 100.
[0063] In this embodiment, please refer to Figure 2 The pressure plate 410 may include one, which is an annular structure. The inner dimension of the annular pressure plate 410 should be smaller than the dimension of the seal 200, so that the annular pressure plate 410 is disposed at the rectangular outer edge of the seal 200, ensuring that the annular pressure plate 410 can press the seal 200 tightly within the upper groove 120. Of course, in other embodiments, the pressure plate 410 may include two, which are disposed at two parallel outer edges of the seal 200, and the pressure plate 410 can press the seal 200 tightly within the upper groove 120.
[0064] It is worth mentioning that, in order to ensure that the pressure plate 410 and the fixing member 420 do not affect the mating relationship between the sealing member 200 and the upper surface of the top cover, in this embodiment, the outer edge of the sealing member 200 is provided with a first mating groove 220, and the upper clamp 100 is provided with a second mating groove 160. The pressure plate 410 is mated within the first mating groove 220 and the second mating groove 160. Another portion of the pressure plate 410 is provided with a first mating hole 411, and the second mating groove 160 is provided with a second mating hole 161. The fixing member 420 passes through the first mating hole 411 and the second mating hole 161 in sequence, so that the sealing member 200 is fixed on the upper clamp 100.
[0065] Optionally, the fastener 420 can be a threaded fixing screw, in which case the second mating hole 161 is provided with threads that mate with the fixing screw. The fastener 420 passes through the first mating hole 411 and enters the second mating hole 161, and is tightened by turning the fastener 420 to lock it in place.
[0066] Wherein, the surface of the locked fastener 420 is flush with the upper mating surface 110; or the surface of the locked fastener 420 is lower than the upper mating surface 110.
[0067] In this embodiment, please refer to Figure 3 The thickness of the seal 200 is greater than the height h2 of the first mating groove 220. The thickness of the pressure plate 410, the height h2 of the first mating groove 220, and the height h3 of the second mating groove 160 are all equal. That is, the height h1 of the upper groove 120 is greater than the height h2 of the first mating groove 220 and the height h3 of the second mating groove 160.
[0068] Please refer to Figures 3-4 The working principle and process of the airtightness testing fixture 010 provided in this utility model embodiment are as follows: When it is necessary to clean the seal 200, loosen and remove the fixing part 420, remove the pressure plate, and disassemble the seal 200 in the upper groove 120 of the upper clamp 100, so that the upper clamp 100 and the seal 200 can be cleaned.
[0069] When it is necessary to replace the seal 200, loosen and remove the fastener 420, remove the pressure plate, and remove the seal 200 from the upper groove 120 of the upper clamp 100 to replace the seal 200.
[0070] In summary, the airtightness testing fixture 010 provided in this embodiment of the present invention, by setting a holding member 400 to fix the sealing member 200 and the upper clamp 100 instead of the sealant in the prior art, avoids the sealant between the upper clamp 100 and the sealing member 200 due to the increase in usage time or number of uses, thereby avoiding the seal failure caused by the gap between the sealing member 200 and the upper clamp 100. At the same time, when it is necessary to clean the sealing member 200, the sealing member 200 on the upper clamp 100 can be disassembled, which facilitates the cleaning of the upper clamp 100 and the sealing member 200, and increases the service life of the upper clamp 100, lower clamp 300 and sealing member 200; when it is necessary to replace the sealing member 200, the sealing member 200 and the upper clamp 100 can be removed to allow for disassembly and replacement of the sealing member 200, making maintenance convenient.
[0071] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. An airtightness testing fixture, characterized in that, include: The upper clamp has an upper mating surface and an upper groove, the upper groove is disposed on the upper mating surface, and a sealing element is detachably disposed in the upper groove; The lower clamp has a lower mating surface, and the upper mating surface is disposed opposite to the lower mating surface; A retaining element is used to fix the seal and the upper clamp.
2. The airtightness testing fixture according to claim 1, characterized in that, The pressing member includes at least one pressing plate and a fixing member. The pressing plate presses the sealing member onto the upper clamp, and the fixing member fixes the pressing plate to the upper clamp to fix the sealing member and the upper clamp. Alternatively, the holding member may include a fixing member for securing the seal and the upper clamp.
3. The airtightness testing fixture according to claim 2, characterized in that, The thickness of the seal is greater than or equal to the height of the upper groove; The surface of the fastener after locking is flush with the upper mating surface; or the surface of the fastener after locking is lower than the upper mating surface.
4. The airtightness testing fixture according to claim 2, characterized in that, One portion of the pressing plate is connected to the sealing member, and another portion of the pressing plate is connected to the upper clamp. The fixing member fixes the other portion of the pressing plate to the upper clamp. Alternatively, all of the pressure plates are connected to the sealing element, and the fixing element secures the pressure plates and the sealing element to the upper clamp.
5. The airtightness testing fixture according to claim 4, characterized in that, The outer edge of the seal is provided with a first mating groove, the upper clamp is provided with a second mating groove, and the pressure plate is mated in the first mating groove and the second mating groove.
6. The airtightness testing fixture according to claim 5, characterized in that, The other part of the pressing plate is provided with a first mating hole, and the second mating groove is provided with a second mating hole. The fixing member passes through the first mating hole and the second mating hole in sequence so that the sealing member is fixed on the upper clamp.
7. The airtightness testing fixture according to claim 6, characterized in that, The thickness of the seal is greater than the height of the first mating groove, and the thickness of the pressure plate, the height of the first mating groove, and the height of the second mating groove are all equal.
8. The airtightness testing fixture according to claim 1, characterized in that, The airtightness testing fixture is used to test the airtightness of the battery top cover, and the upper surface of the top cover is provided with at least a positive terminal, an explosion-proof valve and a negative terminal; The upper surface of the top cover is in contact with the surface of the sealing element, and the lower clamp is provided with a lower groove, which is configured to fit the lower surface of the top cover.
9. The airtightness testing fixture according to claim 8, characterized in that, The upper clamp is provided with at least three first detection grooves, the at least three first detection grooves are disposed in the upper groove, and the sealing member is provided with at least three second detection grooves relative to the at least three first detection grooves; The at least three of the first and second detection grooves are in contact with at least the positive terminal, the explosion-proof valve, and the negative terminal.
10. The airtightness testing fixture according to claim 8, characterized in that, The upper clamp is provided with at least one vent hole, and the at least one vent hole is connected to the at least three first detection grooves; The lower clamp has at least two positioning posts on its lower mating surface, and the upper clamp has at least two positioning slots on its upper mating surface. The at least two positioning posts and the at least two positioning slots are arranged opposite to each other so that the upper clamp and the lower clamp can be installed together.