Leakage detection clamp

Abstract

The utility model provides a leak hunting clamp, which is used for clamping a shell-shaped product for air tightness detection, the product is provided with an inner cavity and an opening, the opening is arranged at the top end of the product and communicated with the inner cavity, the leak hunting clamp comprises a bottom plate, at least one clamping device arranged on the bottom plate and a cover plate, each clamping device comprises two clamping pieces which are oppositely arranged, at least one of the two clamping pieces can be driven to move towards the other clamping piece, the two clamping pieces are clamped on the two opposite side walls of the product so as to seal open holes in the side walls, and after the two clamping pieces are clamped on the two side walls, the two clamping pieces are driven to move towards the other clamping piece so as to seal the open holes in the side walls. The cover plate is connected with the bottom plate through a connecting piece and abuts against the top end of the product so as to seal the inner cavity. According to the utility model, the problem of insufficient detection precision in the product air tightness detection process is solved.

Description

Technical Field

[0001] The utility model relates to the field of air tightness detection devices, in particular to a leak detection fixture. Background Art

[0002] In the rapid development of today's society, cavity parts are increasingly used, and they play a vital role in many fields such as aerospace, automobile manufacturing, and precision instruments. The performance of these parts is directly related to the safety and reliability of the end product, among which airtightness is one of the key indicators for measuring the quality of cavity parts. However, how to efficiently and accurately detect whether there are tiny leaks inside such parts has long been a major technical problem that has plagued related industries.

[0003] Traditional detection methods often rely on cumbersome manual inspections or insensitive detection equipment, which is not only inefficient, but also difficult to ensure the accuracy and repeatability of test results, especially in situations where high precision is required. Therefore, it is particularly important to develop a new leak detection technology that can both ensure detection accuracy and improve detection efficiency. Utility Model Content

[0004] The utility model aims to provide a leak detection fixture to solve the problem of insufficient detection accuracy in the process of air tightness detection of products in the prior art.

[0005] In order to achieve the above-mentioned purpose of the utility model, one embodiment of the utility model provides a leak detection fixture for clamping a shell-shaped product for air-tightness detection, the product having an inner cavity and an opening, the opening being arranged on the top of the product and connected to the inner cavity, wherein the leak detection fixture comprises a base plate, at least one clamping device arranged on the base plate and a cover plate, each of the clamping devices comprising two clamping members arranged opposite to each other, at least one of the two clamping members being driven to move toward the other, and the two clamping members being clamped on two opposite side walls of the product to seal the openings on the side walls, after the two clamping members are clamped on the two side walls, the cover plate is connected to the base plate through a connecting member and abuts against the top of the product to seal the inner cavity.

[0006] As a further improvement of an embodiment of the utility model, it further includes a pre-positioning unit, which includes a plurality of positioning members, and the plurality of positioning members are arranged on the bottom plate along the circumference of the product and define a placement space for placing the product.

[0007] As a further improvement of an embodiment of the utility model, the clamping member includes quick-action flat-nose pliers and a clamping unit, the quick-action flat-nose pliers include a fixed pliers body and a movable pliers head, the movable pliers head is passed through the fixed pliers body, and the clamping unit is arranged on one end of the movable pliers head close to the product, and at least one of the two movable pliers heads can be driven to move toward the other so that the two clamping units are clamped on two opposite side walls of the product.

[0008] As a further improvement of an embodiment of the utility model, the clamping unit is detachably connected to the movable clamp head.

[0009] As a further improvement of one embodiment of the utility model, a mounting groove penetrating the clamping unit is arranged on the end face of the clamping unit facing away from the base plate, and an avoidance hole is arranged on the groove wall of the mounting groove away from the product. The avoidance hole penetrates the groove wall in a direction perpendicular to the base plate and divides the groove wall into two oppositely arranged clamping walls. Two clamping grooves in opposite directions are arranged on the side wall of the movable clamp head, and a partition wall is provided between the groove bottoms of the two clamping grooves. The groove walls of the two clamping grooves are clamped and matched with the two clamping walls, and the partition wall is clamped in the avoidance hole.

[0010] As a further improvement of an embodiment of the utility model, the connecting member includes a fixing column arranged along the circumference of the product, the fixing column is arranged on the base plate, and the cover plate is fixed on the end surface of the fixing column away from the base plate.

[0011] As a further improvement of an embodiment of the utility model, a gripping unit is further provided on a surface of the cover plate facing away from the bottom plate, and the gripping unit includes two handles arranged opposite to each other.

[0012] As a further improvement of an embodiment of the utility model, the cover plate is further provided with an inflation hole connected to the inner cavity.

[0013] As a further improvement of an embodiment of the utility model, a first sealing member is respectively provided between the two clamping members and the two side walls, and the first sealing member is arranged around the opening.

[0014] As a further improvement of an embodiment of the utility model, it also includes a second sealing member, and the second sealing member is arranged between the end surface of the product side wall and the cover plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The two clamping members are clamped on two opposite side walls of the product, and the cover plate abuts against the top of the product, so that the product can achieve a better sealing effect when matched with the leak detection fixture, thereby ensuring the detection accuracy of the leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a leak detection fixture in one embodiment of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the middle clamping member;

[0020] Figure 4 for Figure 3 Schematic diagram of the explosion structure;

[0021] Figure 5 for Figure 2 Bottom view of the middle cover.

[0022] The above description of the drawings includes the following reference numerals:

[0023] 1. Product; 11. Opening; 12. Opening;

[0024] 2. Base plate; 21. Fixed column;

[0025] 3. Clamping member; 31. Flat-nose pliers; 311. Fixed pliers body; 3111. Guide sleeve; 312. Active pliers head; 313. Snap-on groove; 314. Spacer wall; 315. Handle; 316. Connecting rod; 32. Clamping unit; 321. Mounting groove; 322. Avoidance hole; 323. Snap-on wall;

[0026] 4. Cover plate; 41. Handle; 42. Inflation hole;

[0027] 5. Pre-positioning unit; 51. Positioning member; 511. Long opening;

[0028] 6. The first sealing member;

[0029] 7. Second sealing member. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0033] In order to solve the problem of insufficient detection accuracy in the process of air tightness detection of products in the prior art, the utility model provides a leak detection fixture.

[0034] like Figure 1-5 As shown, a leak detection fixture is provided in one embodiment of the utility model. The leak detection fixture is mainly used for clamping a shell-shaped product 1 for air tightness detection. The product 1 has an inner cavity and an opening 11. The opening 11 is arranged on the top of the product and connected to the inner cavity.

[0035] Specifically, the leak detection fixture includes a base plate 2, at least one clamping device arranged on the base plate 2 and a cover plate 4, each of the clamping devices includes two clamping members 3 arranged opposite to each other, at least one of the two clamping members 3 can be driven to move toward the other, and the two clamping members 3 are clamped on the two opposite side walls of the product 1 to seal the opening 12 on the side walls. After the two clamping members 3 are clamped on the two side walls, the cover plate 4 is connected to the base plate 2 through a connecting member and abuts against the top of the product 1 to seal the inner cavity.

[0036] It should be noted that, in this embodiment, the product 1 has two pairs of opposite side walls, one pair of which is provided with an opening 12. In this embodiment, the two clamping members 3 can be driven to move toward one another, so that they can be well clamped on the openings on the two opposite side walls of the product 1, thereby achieving a good clamping and sealing effect.

[0037] Of course, in some embodiments, one of the clamping members 3 can be configured to be driven to move toward the other, thereby achieving an equivalent clamping effect. Designers can configure as needed, and any solution that is the same or similar to this embodiment is included in the protection scope of this utility model.

[0038] It can be understood that, through the above arrangement, the two clamping members 3 are clamped on the two opposite side walls of the product 1, and the cover plate 4 abuts against the top of the product 1, so that the product 1 can achieve a better sealing effect when matched with the leak detection fixture, thereby ensuring the detection accuracy of the leak detection.

[0039] Further, refer to Figure 1 As shown in FIG. 2 , the leak detection fixture further includes a pre-positioning unit 5 , and the pre-positioning unit 5 includes a plurality of positioning members 51 , and the plurality of positioning members 51 are arranged on the bottom plate 2 along the circumference of the product 1 and define a placement space for placing the product 1 .

[0040] It should be noted that, in the present embodiment, the plurality of positioning members 51 include a plurality of first positioning members arranged outside the two sides in the horizontal direction of the product 1, and a plurality of second positioning members arranged outside the two sides in the vertical direction of the product. The positions of the plurality of first positioning members relative to the base plate 2 in the horizontal direction can be adjusted, and the positions of the plurality of second positioning members relative to the base plate 2 in the vertical direction can be adjusted. It can be understood that after such arrangement, the size of the placement space can be adjusted so as to accommodate products of different sizes.

[0041] Furthermore, the first positioning member and the second positioning member are provided with a long through hole 511, and a bolt is passed through the long through hole 511. Specifically, after the position adjustment of the positioning member 51 is completed, the bolt is locked, and the screw of the bolt is passed through the long through hole 511 and connected to the bottom plate 2. The head of the bolt is located outside the side of the positioning member 51 facing away from the bottom plate 2 and abuts against the positioning member 51, thereby limiting the position of the positioning member 51 relative to the bottom plate 2. When the positioning member 51 needs to be adjusted, the screw of the bolt can be rotated to separate the head of the bolt from the positioning member 51, and then the position of the movable positioning member 51 can be adjusted.

[0042] Next, refer to Figure 3-4 As shown, in this embodiment, the clamping member 3 includes a quick-action flat-nose pliers 31 and a clamping unit 32, the quick-action flat-nose pliers 31 include a fixed pliers body 311 and a movable pliers head 312, the movable pliers head 312 is passed through the fixed pliers body 311, and the clamping unit 32 is arranged on one end of the movable pliers head close to the product 1. In this embodiment, the two movable pliers heads 312 can be driven to move toward the other so that the two clamping units 32 are clamped on the two opposite side walls of the product 1.

[0043] Of course, in some embodiments, at least one of the two movable clamps 312 is configured to be driven to move toward the other, so that the two clamping units 32 can be clamped on two opposite side walls of the product 1 .

[0044] It should be noted that the clamping unit 32 is detachably connected to the movable clamp head 312. With this arrangement, the clamping unit 32 of different thickness specifications can be selected to cooperate with the movable clamp head 312, so that the leak detection fixture can adapt to products of different specifications.

[0045] Specifically, refer to Figure 2-4 As best shown, the end surface of the clamping unit 32 facing away from the bottom plate 2 is provided with a mounting groove 321 penetrating the clamping unit, and the groove wall of the mounting groove 321 away from the product 1 is provided with an avoidance hole 322, and the avoidance hole 322 penetrates the groove wall in a direction perpendicular to the bottom plate 2 and divides the groove wall into two oppositely arranged clamping walls 323, and the side wall of the movable clamp head 312 is provided with two clamping grooves 313 with opposite opening directions, and a partition wall 314 is provided between the groove bottoms of the two clamping grooves 313, and the groove walls of the two clamping grooves 313 are clamped and matched with the two clamping walls 323, and the partition wall 314 is clamped in the avoidance hole 322. With such a configuration, on the one hand, the clamping unit 32 can be quickly plugged and matched with the movable clamp head 312; on the other hand, when the clamping unit 32 is plugged into the movable clamp head 312, a relatively stable fixing effect can be obtained.

[0046] Continue to refer Figure 3 , 4 is the best display, the quick-action flat-nose pliers 31 also includes a handle 315, one end of the handle 315 is pivotally connected to the fixed pliers body 31, the fixed pliers body 311 includes a guide cylinder 3111, the movable pliers head 312 is inserted into the guide cylinder 3111, one end of which is connected to the clamping unit 32, and the other end is connected to a connecting rod 316, one end of the connecting rod 316 is pivotally connected to one end of the movable pliers head 312 away from the clamping unit 32, and the other end of the connecting rod 316 is connected between the two ends of the handle 315.

[0047] It can be understood that by pulling the handle 315 , the movable clamp head 312 can be extended and retracted in the guide cylinder, so that the two clamping units 32 can clamp onto the product 1 , or release the product 1 .

[0048] In this embodiment, reference Figure 2 As shown, the connecting member includes a fixing column 21 arranged along the circumference of the product 1 , the fixing column 21 is arranged on the bottom plate 2 , and the cover plate 4 is fixed on the end surface of the fixing column 21 away from the bottom plate 2 .

[0049] Furthermore, a gripping unit is provided on a surface of the cover plate 4 facing away from the bottom plate 2 , and the gripping unit includes two handles 41 that are arranged opposite to each other.

[0050] It should be emphasized that the cover plate 4 is also provided with an air filling hole 42 connected to the inner cavity. In the specific use process, the operator can hold the two handles 41 and put the leak detection fixture into a liquid, such as water. The inner cavity of the product is ventilated through the air filling hole 42. When no bubbles are generated in the liquid, it indicates that the product 1 is not leaking. Otherwise, it indicates that the product is leaking.

[0051] Further, first sealing members 6 are respectively provided between the two clamping members 3 and the two side walls, and the first sealing members are provided around the opening 12. The first sealing members 6 can be provided as sealing rings, sealing gaskets, etc. Through the provision of the first sealing members 6, the sealing between the clamping members 3 and the two side walls can be further ensured.

[0052] Optionally, the leak detection fixture further comprises a second sealing member 7, which is arranged between the end surface of the side wall of the product 1 and the cover plate 4. Thus, the sealed connection between the cover plate 4 and the product 1 can be ensured.

[0053] In summary, the embodiments of the present invention achieve the following technical effects:

[0054] The two clamping members 3 are clamped on two opposite side walls of the product 1, and the cover plate 4 abuts against the top of the product 1, so that the product 1 can achieve a better sealing effect when matched with the leak detection fixture, thereby ensuring the detection accuracy of the leak detection.

[0055] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leak detection fixture, used for clamping a shell-shaped product for air tightness detection, the product having an inner cavity and an opening, the opening being arranged on the top of the product and connected to the inner cavity, characterized in that: The leak detection fixture includes a base plate, at least one clamping device arranged on the base plate and a cover plate, each of the clamping devices includes two clamping members arranged opposite to each other, at least one of the two clamping members can be driven to move toward the other, and the two clamping members are clamped on two opposite side walls of the product to seal the openings on the side walls. After the two clamping members are clamped on the two side walls, the cover plate is connected to the base plate through a connecting member and abuts against the top of the product to seal the inner cavity.

2. The leak detection fixture according to claim 1, characterized in that: It also includes a pre-positioning unit, which includes a plurality of positioning members. The plurality of positioning members are arranged on the bottom plate along the circumference of the product and define a placement space for placing the product.

3. The leak detection fixture according to claim 1, characterized in that: The clamping member includes quick-action flat-nose pliers and a clamping unit. The quick-action flat-nose pliers include a fixed pliers body and a movable pliers head. The movable pliers head is inserted through the fixed pliers body. The clamping unit is arranged on one end of the movable pliers head close to the product. At least one of the two movable pliers heads can be driven to move toward the other so that the two clamping units are clamped on two opposite side walls of the product.

4. The leak detection fixture according to claim 3, characterized in that: The clamping unit is detachably connected to the movable clamp head.

5. The leak detection fixture according to claim 4, characterized in that: The end surface of the clamping unit facing away from the base plate is provided with an installation groove penetrating the clamping unit, and the groove wall of the installation groove away from the product is provided with an avoidance hole, and the avoidance hole penetrates the groove wall in a direction perpendicular to the base plate and divides the groove wall into two oppositely arranged clamping walls, and the side wall of the movable clamp head is provided with two clamping grooves in opposite directions, and a partition wall is provided between the groove bottoms of the two clamping grooves, and the groove walls of the two clamping grooves are clamped and matched with the two clamping walls, and the partition wall is clamped in the avoidance hole.

6. The leak detection fixture according to claim 1, characterized in that: The connecting member comprises a fixing column arranged along the circumference of the product, the fixing column is arranged on the bottom plate, and the cover plate is fixed on the end surface of the fixing column away from the bottom plate.

7. The leak detection fixture according to claim 1, characterized in that: A gripping unit is also arranged on a surface of the cover plate facing away from the bottom plate, and the gripping unit comprises two handles arranged opposite to each other.

8. The leak detection fixture according to claim 1, characterized in that: The cover plate is also provided with an inflation hole communicating with the inner cavity.

9. The leak detection fixture according to claim 1, characterized in that: A first sealing member is respectively provided between the two clamping members and the two side walls, and the first sealing member is arranged around the opening.

10. The leak detection fixture according to claim 1, characterized in that: It also includes a second sealing member, which is arranged between the end surface of the product side wall and the cover plate.

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