A jig for easy positioning of plastic shells for testing
By combining the design of sliding blocks, limit rails, and positioning plates, the problem of unstable positioning of the plastic housing inspection fixture is solved, achieving precise positioning and stable clamping of the plastic housing, thus improving the accuracy and safety of the inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN QUANYI MECHANICAL & ELECTRONICS CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional plastic housing testing fixtures are unstable in positioning, causing the plastic housing to easily move during the testing process, affecting the accuracy of the test and potentially causing damage.
It adopts a combination design of sliding block, limit slide rail and positioning plate, and achieves precise positioning and stable locking through positioning screw and rotating block. Combined with rubber-coated positioning plate to prevent slippage and provide reliable support surface.
This improves the accuracy and stability of shell detection, avoids detection errors and equipment failures caused by movement, and ensures the safety of the shell.
Smart Images

Figure CN224425367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic shell testing fixtures, specifically a plastic shell testing fixture that is easy to position. Background Technology
[0002] In the current manufacturing and testing process of plastic housings, fixtures, as key auxiliary tools, are widely used in the airtightness testing stage. Airtightness testing is an important step in ensuring the quality of plastic housings and preventing leaks, and it is of great significance for improving the overall performance of products and user satisfaction.
[0003] However, traditional housing testing fixtures have some design shortcomings, particularly in housing positioning. Existing housing testing fixtures typically only provide a simple platform for placing the housing to be tested. While this design is simple and straightforward, it reveals problems with unstable positioning during actual operation. Due to the lack of an effective positioning mechanism, the housing is easily moved on the fixture platform by external forces (such as airflow, improper operation, etc.), which not only affects the accuracy of airtightness testing but also easily causes unnecessary damage to the housing. Utility Model Content
[0004] (I) Purpose of the utility model
[0005] In view of this, the purpose of this utility model is to provide a jig for detecting plastic shells that is easy to position, thereby solving the problems mentioned in the background above.
[0006] (II) Technical Solution
[0007] A fixture for testing plastic housings that is easy to position includes a fixture body and an airtight cover. A material placement plate is provided on the top outer surface of the fixture body, and a limiting slide rail is fixedly installed on both sides of the material placement plate. Two sets of sliding blocks are movably installed on the outer surface of each limiting slide rail. A connecting plate is connected between the two sets of sliding blocks. A positioning plate is connected to one side of the connecting plate, and a positioning component is provided on one side of each sliding block, and the positioning component is used to limit the movement of the sliding block.
[0008] Preferably, the positioning assembly includes a connecting plate and a positioning screw. The connecting plate is fixedly mounted on the outer surface of the sliding block, and a screw hole is formed on the outer surface of the connecting plate. The positioning screw is movably installed in the screw hole. The connecting plate is fixedly mounted on the sliding block, providing a stable support point for the positioning screw. The positioning screw in the screw hole can rotate as needed and penetrate into the limiting linear groove of the fixture body, thereby achieving precise positioning and stable locking of the sliding block.
[0009] Preferably, the top outer surface of the fixture body is provided with two sets of limiting linear grooves. The limiting linear grooves ensure that the positioning screw can move along a predetermined path when it rotates and penetrates, avoiding deviations and errors in the positioning process and improving the accuracy and stability of positioning.
[0010] Preferably, a rotating block is connected to the top of the positioning screw, which allows the user to easily rotate the positioning screw without using additional tools.
[0011] Preferably, the top outer surface of the fixture body is serrated. The serrated outer surface increases the friction between the fixture and the placement surface, preventing the fixture from sliding or moving during the testing process, thus ensuring the accuracy and safety of the testing.
[0012] Preferably, one side of the positioning plate is wrapped with rubber. The rubber not only increases the stability of the clamping, but also avoids damage to the surface of the rubber shell caused by direct clamping.
[0013] Preferably, an operating plate is fixedly installed on one side of the top of the connecting plate, which allows the user to move the connecting plate more easily, thereby adjusting the position of the positioning plate.
[0014] As can be seen from the above technical solutions, this application has the following beneficial effects:
[0015] 1. This utility model achieves precise clamping of the rubber shell through the combination of a sliding block, a limiting slide rail, and a positioning plate. By manually operating the sliding block, the position of the positioning plate can be easily adjusted to ensure tight contact and clamping of both sides of the rubber shell. Then, rotating the rotating block drives the positioning screw deeper into the inner wall of the limiting linear groove. This fixture firmly fixes the positions of the sliding block and the positioning plate, preventing any form of sliding or movement during the testing process. This improves positioning accuracy and ensures the stability and safety of the testing process, effectively avoiding testing errors and equipment malfunctions caused by rubber shell movement.
[0016] 2. This utility model provides a reliable support surface for the plastic shell through the material placement plate. This makes the plastic shell less prone to movement and ensures that it will not move or tilt during the testing process, thereby greatly improving the accuracy and reliability of the testing. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;
[0018] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;
[0019] Figure 3 This is a schematic diagram of the third three-dimensional structure of the present invention;
[0020] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle;
[0021] Figure 5 This utility model Figure 1 Enlarged diagram of point B in the middle.
[0022] In the diagram: 1. Fixture body; 2. Airtight cover; 3. Material placement plate; 4. Limiting slide rail; 5. Sliding block; 6. Connecting plate; 7. Positioning plate; 8. Operating plate; 9. Connecting plate; 911. Positioning screw; 912. Rotating block; 913. Limiting linear groove. Detailed Implementation
[0023] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.
[0024] Please see Figure 1-5 One embodiment provided by this utility model:
[0025] A fixture for testing plastic housings that is easy to position includes a fixture body 1 and an airtight cover 2. A material placement plate 3 is provided on the top outer surface of the fixture body 1, and a limiting slide rail 4 is fixedly installed on both sides of the material placement plate 3. Two sets of sliding blocks 5 are movably installed on the outer surface of the limiting slide rail 4. A connecting plate 6 is connected between the two sets of sliding blocks 5. A positioning plate 7 is connected to one side of the connecting plate 6. A positioning component is provided on one side of the sliding block 5, and the positioning component is used to limit the sliding block 5.
[0026] Preferably, the positioning assembly includes a connecting plate 9 and a positioning screw 911. The connecting plate 9 is fixedly mounted on the outer surface of the sliding block 5, and a screw hole is provided on the outer surface of the connecting plate 9. The positioning screw 911 is movably installed in the screw hole. The connecting plate 9 is fixedly mounted on the sliding block 5, providing a stable support point for the positioning screw 911. The positioning screw 911 in the screw hole can rotate as needed and penetrate into the limiting linear groove 913 of the fixture body 1, thereby achieving precise positioning and stable locking of the sliding block 5.
[0027] Preferably, the top outer surface of the fixture body 1 is provided with two sets of limiting straight grooves 913. The limiting straight grooves 913 ensure that the positioning screw 911 can move along the predetermined path when it rotates and penetrates, avoiding deviations and errors in the positioning process and improving the accuracy and stability of positioning.
[0028] Preferably, the top of the positioning screw 911 is connected to a rotating block 912, which allows the user to easily rotate the positioning screw 911 without using additional tools.
[0029] Preferably, the top outer surface of the fixture body 1 is serrated. The serrated outer surface increases the friction between the fixture and the placement surface, preventing the fixture from sliding or moving during the testing process, thus ensuring the accuracy and safety of the testing.
[0030] Preferably, one side of the positioning plate 7 is wrapped with rubber. The rubber not only increases the stability of the clamping, but also avoids damage to the surface of the rubber shell caused by direct clamping.
[0031] Preferably, an operation plate 8 is fixedly installed on one side of the top of the connecting plate 6. The operation plate 8 allows the user to move the connecting plate 6 more easily, thereby adjusting the position of the positioning plate 7.
[0032] Working Principle: When using this easy-to-position plastic housing inspection fixture, firstly, the plastic housing to be inspected is precisely placed on the top outer surface of the placement plate 3. The placement plate 3 provides a stable and secure support surface, ensuring that the plastic housing will not move or tilt during inspection. Next, by manually operating the sliding blocks 5, guided by the limit slide rail 4, the two sets of sliding blocks 5 move smoothly along a predetermined trajectory. This ensures the accuracy and stability of the movement of the sliding blocks 5, thereby improving the accuracy of the positioning plate 7 in clamping the plastic housing. As the sliding blocks 5 move, the connecting plate 6 also moves, causing the two sets of positioning plates 7 to gradually approach the sides of the plastic housing. When the positioning plates 7 are in close contact with the sides of the plastic housing, they will effectively clamp the plastic housing, preventing any form of movement during subsequent inspection. At this point, in order to fix the position of the sliding blocks 5 and ensure the stable clamping of the plastic housing by the positioning plates 7, the rotating block 912 needs to be rotated. The rotating block 912 is connected to the top end of the positioning screw 911. By rotating the rotating block 912, the positioning screw 911 can be driven to rotate and move downward in the screw hole of the connecting plate 9. As the positioning screw 911 gradually goes deeper, its bottom end will abut against the inner wall of the limiting straight groove 913 on the outer surface of the top of the fixture body 1, thereby providing a strong fixing force to prevent the sliding block 5 from sliding or moving in any way during the testing process, and also to ensure the precise positioning of the positioning plate 7 on the rubber shell.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A fixture for easy positioning of a plastic shell for testing, comprising a fixture body (1) and an airtight cover (2), characterized in that: The top outer surface of the fixture body (1) is provided with a material placement plate (3), and both sides of the material placement plate (3) are fixedly installed with limit slide rails (4). Two sets of sliding blocks (5) are movably installed on the outer surface of the limit slide rails (4). A connecting plate (6) is connected between the two sets of sliding blocks (5). A positioning plate (7) is connected to one side of the connecting plate (6). A positioning component is provided on one side of the sliding block (5), and the positioning component is used to limit the sliding block (5).
2. The fixture for easy positioning of a plastic shell as described in claim 1, characterized in that: The positioning assembly includes a connecting plate (9) and a positioning screw (911). The connecting plate (9) is fixedly installed on the outer surface of the sliding block (5), and a screw hole is provided on the outer surface of the connecting plate (9). The positioning screw (911) is movably installed in the screw hole.
3. The fixture for easy positioning of a plastic shell as described in claim 1, characterized in that: Two sets of limiting straight grooves (913) are provided on the top outer surface of the fixture body (1).
4. The fixture for easy positioning of a plastic shell as described in claim 2, characterized in that: The top end of the positioning screw (911) is connected to a rotating block (912).
5. A jig for detecting a rubber shell that is easy to position, as described in claim 1, characterized in that: The top outer surface of the fixture body (1) is serrated.
6. The fixture for detecting rubber shells that is easy to position according to claim 1, characterized in that: One side of the positioning plate (7) is wrapped with rubber.
7. A jig for detecting a rubber shell that is easy to position, as described in claim 1, characterized in that: An operating plate (8) is fixedly installed on one side of the top of the connecting plate (6).