Sealing ring
By designing an annular sealing ring structure with an inclined upper part and a vertical lower part, the problem of increased difficulty in closing the test seat caused by existing sealing rings is solved, and the sealing ring can be easily compressed under small force while maintaining a tight seal.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG HUAXIN INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-05-19
AI Technical Summary
The existing sealing ring requires a large closing force from the test seat to compress it during use, which increases the difficulty of closing the test seat.
Design a ring-shaped sealing ring with an outer and inner surface of a base having an inclined upper part and a vertical lower part. The angles of the inclined upper part and the vertical lower part are the same. The connection between the upper and lower parts of the outer surface and the connection between the bottom surface of the base are rounded. NBR material and Shore A80 hardness are used to ensure that the sealing ring is easy to compress initially and maintains a tight seal during further compression.
It reduces the initial compression force required for the sealing ring to achieve an effective seal, making it easier to close the cover while ensuring the final tightness of the seal, thus improving ease of operation and sealing effect.
Smart Images
Figure CN224260890U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semiconductor testing equipment technology, and in particular to a sealing ring. Background Technology
[0002] When testing chips, the tester typically uses a test socket, which consists of an upper socket and a lower socket. The lower socket has a first mounting position for placing the chip. During testing, the upper and lower sockets are closed to form a closed space, and then nitrogen gas is injected into the test socket. To improve the airtightness of the chip during testing, the lower socket of the test socket also has a second mounting position for installing a sealing ring to prevent nitrogen leakage.
[0003] The existing sealing ring requires a large closing force from the test seat to compress it and achieve a sealing effect, which increases the difficulty of closing the test seat. Utility Model Content
[0004] The main purpose of this invention is to propose a sealing ring that aims to solve the problem that existing sealing rings make it more difficult to close the test seat cover.
[0005] To achieve the above objectives, the sealing ring proposed in this utility model is applied to a test seat. The test seat includes an upper seat, a lower seat, a first mounting position and a second mounting position disposed on the lower seat. The first mounting position is used for placing the material to be tested, and the second mounting position is used for mounting the sealing ring. The sealing ring includes:
[0006] A ring-shaped substrate has an outer side and an inner side. The upper part of the outer side is inclined at an angle a1 toward the axis of the substrate, and the lower part of the outer side is vertically arranged. The upper part of the inner side is inclined at an angle a2 toward the axis of the substrate, and the lower part of the inner side is vertically arranged. A1 and a2 are the same.
[0007] In one embodiment, a first position is formed between the upper part of the outer side surface and the lower part of the outer side surface;
[0008] A second position is formed between the upper part of the inner side and the lower part of the inner side, and the first position is located below the second position.
[0009] In one embodiment, the range of a1 is 65°-75°.
[0010] In one embodiment, a1 is 70°;
[0011] And / or, the connection between the upper part of the outer side surface and the lower part of the outer side surface is rounded, and the connection between the lower part of the outer side surface and the bottom surface of the substrate is rounded.
[0012] In one embodiment, the distance b1 between the top and bottom of the substrate ranges from 2 mm to 2.2 mm.
[0013] In one embodiment, b1 is 2.15 mm.
[0014] In one embodiment, the ratio of the vertical distance b2 between the first position and the top to b1 ranges from 0.55 to 0.65.
[0015] In one embodiment, b2 is 1.3 mm.
[0016] In one embodiment, the vertical distance b3 between the upper part of the outer side surface and the upper part of the inner side surface is 0.4mm-0.6mm.
[0017] In one embodiment, the distance b3 is 0.5 mm;
[0018] And / or, the top of the outer side is located outside and above the top of the inner side;
[0019] And / or, the substrate is made of NBR material and has a Shore A80 hardness.
[0020] The technical solution of this utility model adopts a ring-shaped substrate with an outer side and an inner side. The upper part of the outer side is inclined at an angle a1 towards the axis of the substrate, and the lower part of the outer side is vertically arranged. The upper part of the inner side is inclined at an angle a2 towards the axis of the substrate, and the lower part of the inner side is vertically arranged. A1 and a2 are the same. It should be noted that this arrangement makes the upper part of the sealing ring form an inclined structure and the lower part form a straight cylindrical structure, and the thickness of the upper part is the same for a large portion. Under the action of the inclined structure, when the sealing ring is subjected to the pressure of the upper seat, the upper seat of the test seat can achieve the upper part of the sealing ring to deform under pressure with a small force. When the upper and lower seats of the test seat are closed, due to the special shape design of the sealing ring, it can be more easily compressed in the initial stage, reducing the initial compression force required to achieve effective sealing, reducing the force required to close the cover, thereby reducing the difficulty of closing the cover, and thus solving the technical problem that the existing sealing ring causes the test cover to be more difficult to close. At the same time, with further compression, the lower vertical part of the sealing ring begins to play its role, ensuring the final sealing tightness. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the structure of an embodiment of the sealing ring provided by this utility model;
[0023] Figure 2 for Figure 1 Cross-sectional view of the central sealing ring;
[0024] Figure 3 for Figure 2 Enlarged view of a portion of the central structure;
[0025] Figure 4 This is based on the existing sealing ring structure.
[0026] Explanation of icon numbers:
[0027] 100, Matrix; 110, Outer surface; 120, Inner surface; 130, First position; 140, Second position; 150, First arc; 160, Second arc.
[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0032] When testing chips, the tester typically uses a test socket, which consists of an upper socket and a lower socket. The lower socket has a first mounting position for placing the chip. During testing, the upper and lower sockets are closed to form a closed space, and then nitrogen gas is injected into the test socket. To improve the airtightness of the chip during testing, the lower socket of the test socket also has a second mounting position for installing a sealing ring to prevent nitrogen leakage.
[0033] Existing sealing rings (rectangular sealing rings, referring to sealing rings with a rectangular cross-section, see...) Figure 4 When in use, the test socket requires a large closing force to compress the sealing ring and achieve a sealing effect, which will increase the difficulty of closing the test socket.
[0034] This utility model proposes a sealing ring for use in a test seat. The test seat includes an upper seat, a lower seat, a first mounting position and a second mounting position disposed on the lower seat. The first mounting position is used for placing the material to be tested, and the second mounting position is used for installing the sealing ring.
[0035] Please see Figure 1 , Figure 2 , Figure 3 In one embodiment of this utility model, the sealing ring includes:
[0036] A ring-shaped substrate 100 has an outer surface 110 and an inner surface 120. The upper part of the outer surface 110 is inclined at an angle a1 toward the axis of the substrate 100, and the lower part of the outer surface 110 is vertically arranged. The upper part of the inner surface 120 is inclined at an angle a2 toward the axis of the substrate 100, and the lower part of the inner surface 120 is vertically arranged. a1 and a2 are the same. It should be noted that this arrangement results in an inclined structure at the upper part of the sealing ring and a straight cylindrical structure at the lower part, with a relatively large portion of the upper part having a uniform thickness. Under the action of the inclined structure, when the sealing ring is subjected to the pressure of the upper seat, the upper seat of the test seat can achieve the upper part of the sealing ring to deform under pressure with a small force. When the upper and lower seats of the test seat are closed, due to the special shape design of the sealing ring, it can be more easily compressed in the initial stage, reducing the initial compression force required to achieve effective sealing, reducing the force required to close the cover, thereby reducing the difficulty of closing the cover, and thus solving the technical problem that the existing sealing ring causes the test cover to be more difficult to close. At the same time, with further compression, the lower vertical part of the sealing ring begins to play its role, ensuring the final sealing tightness.
[0037] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 The upper part of the outer side 110 and the lower part of the outer side 110 form a first position 130; the upper part of the inner side 120 and the lower part of the inner side form a second position 140. The first position 130 is located below the second position 140. This allows the lower part of the sealing ring to have a relatively large size, providing a larger contact area and a more uniform pressure distribution, thereby improving the sealing effect between the lower part of the sealing ring and the contact surface.
[0038] In some embodiments, reference Figure 1 , Figure 2 , Figure 3The connection between the upper and lower parts of the outer surface 110 is rounded, and this rounded arc is defined as the first arc 150. In some embodiments, the first arc 150 is located below the second position 140, where the first position 130 is the connection between the first arc 150 and the upper part of the outer surface 110. Furthermore, after the connection between the upper and lower parts of the outer surface 110 of the sealing ring is rounded, the stress concentration phenomenon at the connection is effectively alleviated. This is because the rounded transition can disperse the force to a larger area rather than concentrating it at a single point. The connection between the lower part of the outer surface 110 and the bottom surface of the base 100 is also rounded, and this rounded arc is defined as the second arc 160. Similarly, after the connection between the lower part of the outer surface 110 and the bottom surface of the base 100 is rounded, the pressure distribution at the bottom under pressure is more uniform, avoiding the problem of tearing or warping of the bottom edge due to excessive local pressure.
[0039] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 The angle a1 ranges from 65° to 75°. When the angle is too small (e.g., less than 65°), the upper part of the sealing ring will be too "steep," requiring a large force to deform it during the initial compression. Conversely, when the angle is too large (e.g., greater than 75°), the upper part of the sealing ring will be too "flat," making initial compression easier but resulting in insufficient sealing later. Therefore, an angle range of 65° to 75° strikes a balance between initial compression resistance and final sealing effect. Furthermore, in one embodiment, a1 is 70°. This 70° angle ensures that the sealing ring fits tightly against the contact surface during compression while avoiding insufficient compression due to an excessively small angle or inadequate sealing due to an excessively large angle.
[0040] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 The distance b1 between the top and bottom of the substrate 100 ranges from 2mm to 2.2mm. If the height of the sealing ring is too high (e.g., greater than 2.2mm), a greater closing force is required to complete the compression; if the height is too low (e.g., less than 2mm), it may lead to a decrease in sealing performance. A height range of 2mm to 2.2mm can achieve a balance between ease of operation and sealing performance. Further, in one embodiment, b1 is 2.15mm. A height of 2.15mm ensures the sealing performance of the sealing ring while avoiding the problem of excessive closing force.
[0041] In one embodiment, reference Figure 1 , Figure 2 , Figure 3The ratio of the vertical distance b2 between the first position 130 and the top to b1 ranges from 0.55 to 0.65. Further, if the b2 / b1 ratio is too small (e.g., less than 0.55), the inclined portion is too short, which may result in high initial compression resistance; if the ratio is too large (e.g., greater than 0.65), the vertical portion is too short, which may result in insufficient final sealing force. A ratio range of 0.55-0.65 achieves the best balance between ease of operation and sealing performance, making operation easier for the user. Further, in one embodiment, b2 is 1.3 mm, and b1 is 2.15 mm. With a b2 = 1.3 mm design, the inclined portion of the sealing ring can gradually conform to the contact surface during compression, ensuring a tight fit. As compression proceeds, the vertical portion gradually participates in compression, further enhancing the sealing effect. This design avoids insufficient compression due to an excessively short inclined portion, and also avoids insufficient sealing force due to an excessively short vertical portion.
[0042] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 The vertical distance b3 between the upper part of the outer surface 110 and the upper part of the inner surface 120 is 0.4mm-0.6mm. When b3 is set within the range of 0.4mm-0.6mm, the upper inclined portion of the sealing ring can provide appropriate flexibility during compression. If b3 is less than 0.4mm, the sealing ring may lack sufficient elasticity due to its thinness, resulting in insufficient sealing force; if b3 is greater than 0.6mm, the sealing ring may be difficult to compress due to its excessive thickness, increasing the difficulty of operation. Therefore, the range of 0.4mm-0.6mm can achieve a balance between flexibility and strength. Further, in one embodiment, the distance b3 is 0.5mm. When b3 = 0.5mm, the upper inclined portion of the sealing ring has an ideal thickness. This allows the sealing ring to provide sufficient flexibility to adapt to the shape of the contact surface when compressed, while avoiding compression difficulties due to excessive thickness or insufficient strength due to insufficient thickness.
[0043] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 The top of the outer side 110 is located outside and above the top of the inner side 120. If the top of the outer side 110 and the top of the inner side 120 are on the same plane or in an unreasonable position (such as the outer side 110 being lower than the inner side 120), the upper part will deform, resulting in a smaller opening size at the top of the sealing ring, which may occupy the chip placement space.
[0044] In one embodiment, the substrate 100 is made of NBR material. Nitrile rubber has good tear resistance, abrasion resistance, and compression set resistance, which allows the sealing ring to withstand certain mechanical stress during use without easily being damaged. Furthermore, the hardness is Shore A80, and NBR with Shore A80 has better compression set resistance. This means that after long-term pressure, the sealing ring can better recover its original shape, thereby extending its service life and maintaining a continuously effective seal. However, this design is not limited to this. In some embodiments, the hardness can also be selected as Shore A79 or Shore A81. Although the performance is slightly different compared to Shore A80, it still meets the requirements.
[0045] Furthermore, Table 1 provides a comparison of 10 sets of experiments between the sealing ring of one embodiment of this application and the sealing ring of the prior art. In Table 1, X: the existing sealing ring (rectangular sealing ring, model: XTC11-18 Yiheda); Y: the sealing ring of this application. The data of Y are NBR material, Shore A80, b1 is 2.15mm, b2 is 1.3mm, and a1 is 70°.
[0046] Experimental steps: Hold the pressure gauge vertically downwards and press the test seat to ensure that the upper and lower seats of the test seat are closed. Record the current pressure gauge reading. Then, introduce nitrogen gas. After the nitrogen gas passes through the test seat, it flows through the pressure gauge. Observe whether the pressure gauge reading reaches 0.3 MPa. If it does, it means that the sealing ring has played a sealing role, and the closing force measured at this time meets the requirements.
[0047] Table 1:
[0048]
[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A sealing ring, characterized in that, The test fixture is applied to a test base, which includes an upper base, a lower base, a first mounting position and a second mounting position disposed on the lower base. The first mounting position is used for placing the material to be tested, and the second mounting position is used for mounting a sealing ring. The sealing ring includes: A ring-shaped substrate has an outer side and an inner side. The upper part of the outer side is inclined at an angle a1 toward the axis of the substrate, and the lower part of the outer side is vertically arranged. The upper part of the inner side is inclined at an angle a2 toward the axis of the substrate, and the lower part of the inner side is vertically arranged. A1 and a2 are the same.
2. The sealing ring as described in claim 1, characterized in that, A first position is formed between the upper part of the outer side surface and the lower part of the outer side surface. A second position is formed between the upper part of the inner side and the lower part of the inner side, and the first position is located below the second position.
3. The sealing ring as described in claim 2, characterized in that, The range of a1 is 65°-75°.
4. The sealing ring as described in claim 3, characterized in that, a1 is 70°; And / or, the connection between the upper part of the outer side surface and the lower part of the outer side surface is rounded, and the connection between the lower part of the outer side surface and the bottom surface of the substrate is rounded.
5. The sealing ring as described in claim 2, characterized in that, The distance b1 between the top and bottom of the substrate ranges from 2mm to 2.2mm.
6. The sealing ring as described in claim 5, characterized in that, The value of b1 is 2.15 mm.
7. The sealing ring as described in claim 5, characterized in that, The ratio of the vertical distance b2 between the first position and the top to b1 ranges from 0.55 to 0.
65.
8. The sealing ring as described in claim 7, characterized in that, The value of b2 is 1.3 mm.
9. The sealing ring as described in claim 2, characterized in that, The vertical distance b3 between the upper part of the outer side surface and the upper part of the inner side surface is 0.4mm-0.6mm.
10. The sealing ring as described in claim 9, characterized in that, The distance b3 is 0.5mm; And / or, the top of the outer side is located outside and above the top of the inner side; And / or, the substrate is made of NBR material and has a Shore A80 hardness.