Chip testing fixture

Abstract

The utility model relates to chip testing technical field, and disclose a kind of chip test fixed base, including pedestal, the middle part of pedestal is equipped with through slot, a group of compression members and a group of supporting members are installed in through slot, compression member and supporting member cooperate to complete the clamping to chip body, pull rod is installed on pedestal, and pull rod drives compression member to shrink.

Description

Technical Field

[0001] This utility model relates to the field of chip testing technology, specifically a chip testing fixture. Background Technology

[0002] With the rapid development of integrated circuit technology, chip packaging forms are becoming increasingly diversified, and the need for performance testing is becoming more frequent and important. Chip test mounts are the key interface connecting chips to test equipment, and their performance directly affects the accuracy and reliability of test results.

[0003] Currently, common chip test fixtures typically employ manual screw tightening, lever pressing, or automatic pneumatic clamping methods. However, these methods have some inherent drawbacks: Low operational efficiency: The manual screw tightening method requires operators to use tools to tighten multiple screws, and the loading and unloading process is cumbersome and time-consuming, which cannot meet the production cycle requirements of high frequency and rapid testing.

[0004] Poor clamping force control can easily damage the chip: the force of screw tightening or lever pressing down is difficult to control precisely. Insufficient clamping force will cause poor contact between the chip and the test probe, resulting in test errors; excessive clamping force can easily damage the chip's fragile pins or body, causing damage to the expensive chip under test and resulting in huge economic losses. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a chip testing fixture, including a base, a through groove in the middle of the base, a set of clamping members and a set of supporting members installed in the through groove, the clamping members and the supporting members cooperate to clamp the chip body, and a pull rod is installed on the base, the pull rod drives the clamping members to retract.

[0006] Furthermore, the base has two oppositely distributed first sliding grooves and two oppositely distributed long grooves. The long grooves are interconnected with the corresponding first sliding grooves. Each first sliding groove has a clamping member installed in it. The clamping member has an interconnected first guide groove and a second guide groove. The end of the U-shaped pull rod is placed in the channel formed by the long groove, the first guide groove and the second guide groove.

[0007] Furthermore, the first guide groove and the second guide groove are connected by an inclined plane. When the pull rod is pulled, the folded rod structure at its end slides from the first guide groove into the second guide groove through the inclined plane. During this process, the folded rod structure interacts with the inclined plane, driving the clamping member to generate lateral displacement and retract into the first slide groove.

[0008] Furthermore, both the first and second guide grooves are provided with spring pieces, which contact the end of the pull rod to eliminate the assembly gap between the pull rod and the guide groove.

[0009] Furthermore, at least one pressing protrusion is provided on one side surface of the clamping member, and the pressing protrusion extends out of the first sliding groove.

[0010] Furthermore, the base is also provided with two oppositely distributed second sliding grooves, wherein the first sliding groove and the second sliding groove are not located on the same side. Each second sliding groove is equipped with a support member, and a spring is installed on the back of the support member. The two support members support the chip body.

[0011] Furthermore, both sides of the support member are provided with protruding edges, and each of the protruding edges has at least two mounting grooves, in which rollers are installed.

[0012] Furthermore, the support member has multiple toothed grooves on one side extending out of the second slide groove.

[0013] This utility model has the following beneficial effects: 1. This utility model can simultaneously control the contraction and opening of two clamping parts by pushing and pulling a single U-shaped lever, realizing the rapid clamping and disassembly of chips, greatly improving testing efficiency and simplifying the operation process.

[0014] 2. The key component of this invention is the elastic support system composed of the support member and the spring. When the clamping force is too great, the chip can compress the spring, causing the support member to sink and preventing the chip itself from being crushed. This allows the fixing base to adapt to chips of different thicknesses, ensuring high safety.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 A cross-sectional diagram; Figure 3 This is a schematic diagram of the base unfolding. Figure 4This is a schematic diagram of the base; Figure 5 This is a schematic diagram of the clamping component installation; Figure 6 This is a schematic diagram of the clamping component structure; Figure 7 This is a schematic diagram of the support component installation. Figure 8 This is a schematic diagram of the distribution of the second chute; Figure 9 This is a schematic diagram of the support component; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Base; 101. Through groove; 102. First sliding groove; 103. Long groove; 104. Second sliding groove; 2. Cover plate; 3. Clamping component; 301. Pressing protrusion; 302. First guide groove; 303. Second guide groove; 4. Pull rod; 5. Spring; 6. Support component; 601. Protruding edge; 602. Mounting groove; 603. Roller; 604. Toothed groove; 7. Spring; 8. Chip body. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 protection scope of the present utility model.

[0019] Please see Figures 1-9 As shown, this utility model is a chip testing fixture, including a base 1. A through groove 101 is provided in the middle of the base 1. A set of clamping members 3 and a set of supporting members 6 are installed in the through groove 101. The clamping members 3 and the supporting members 6 cooperate to clamp the chip body 8. A pull rod 4 is installed on the base 1. The pull rod 4 drives the clamping members 3 to retract. The base 1 serves as the main support structure, with a through slot 101 in the middle. Cover plates 2 are installed on both the upper and lower sides of the slot 101, and the cover plates 2 limit the installation of the clamping parts 3 and the supporting parts 6.

[0020] The base 1 has two relatively distributed first sliding grooves 102 and two relatively distributed long grooves 103. The long grooves 103 are connected to the corresponding first sliding grooves 102. Each first sliding groove 102 is equipped with a clamping member 3. The clamping member 3 has a first guide groove 302 and a second guide groove 303 that are connected to each other. The end of the U-shaped pull rod 4 is placed in the channel formed by the long groove 103, the first guide groove 302 and the second guide groove 303. The first guide groove 302 and the second guide groove 303 are connected by an inclined surface. When the pull rod 4 is pulled, the folded rod structure at its end slides from the first guide groove 302 into the second guide groove 303 through the inclined surface. During this process, the folded rod structure interacts with the inclined surface, driving the clamping member 3 to generate lateral displacement and retract into the first slide groove 102. Both the first guide groove 302 and the second guide groove 303 are provided with spring pieces 5, which are in contact with the end of the pull rod 4 to eliminate the assembly gap between the pull rod 4 and the guide groove. The spring piece 5 is made of metal and has a certain degree of elasticity. It always maintains contact with the end folding rod structure of the pull rod 4. The core function of the spring piece 5 is to eliminate the assembly gap between the pull rod 4 and the guide groove, ensuring that the pull rod 4 moves smoothly and without wobbling during operation, providing a good feel and improving the life of the mechanism.

[0021] At least one pressing protrusion 301 is provided on one side surface of the clamping member 3, and the pressing protrusion 301 extends out of the first sliding groove 102; The pressing protrusion 301 has an inclined clamping surface that presses against the side of the chip body 8.

[0022] The base 1 is also provided with two oppositely distributed second slide grooves 104, wherein the first slide groove 102 and the second slide groove 104 are not located on the same side. Each second slide groove 104 is equipped with a support 6, and a spring 7 is installed on the back of the support 6. The two support 6 support the chip body 8. A spring 7 is installed on the back of the support member 6 to provide upward support, enabling it to adapt to chips of different thicknesses and to act as a buffer. Both sides of the support member 6 have protruding edges 601, each with two mounting grooves 602. Rollers 603 are mounted in the mounting grooves 602 via rotating shafts. The rollers 603 contact the inner wall of the second sliding groove 104, converting sliding friction into rolling friction, making the up-and-down movement of the support member 6 extremely smooth.

[0023] The support member 6 has protruding edges 601 on both sides, and each protruding edge 601 has at least two mounting grooves 602, in which rollers 603 are installed. The support member 6 has multiple toothed grooves 604 on one side extending out of the second slide groove 104.

[0024] In addition, both the port of the first slide groove 102 and the port of the second slide groove 104 are provided with limiting edges. The limiting edges are provided to limit the cooperation between the side of the pressing member 3 and the protruding edge 601 of the supporting member 6, thereby preventing the pressing member 3 from sliding out of the first slide groove 102 and the supporting member 6 from sliding out of the second slide groove 104.

[0025] The main body of the chip body 8 is housed within the through slot 101 of the base 1, while its pins rest on the upper surfaces of the two support members 6. This arrangement ensures sufficient space below the chip pin area, preventing contact and scratching with the base 1. The chip's pins can extend out of the second groove 104, which has multiple slots 604 on one side. The chip's pins face downwards, directly opposite and parallel to a test interface (not shown in the diagram) at the bottom of the mounting base, typically a pad or probe board on a PCB. The slots 604 on the support 6 increase the friction with the chip's edge, providing support and initial positioning to prevent horizontal movement of the chip. When the clamping member 3 presses down on the chip body 8, the chip's pins are stably pressed against the test probes at the bottom of the mounting base or directly against the contact pads on the PCB. These test probes are electrically connected to external test equipment, such as a test machine, establishing a complete electrical connection path from chip pins to test probes to the test equipment, enabling the application of test signals to the chip and the acquisition of its output response.

[0026] When in use, in the locked state, such as... Figure 1 and Figure 3 As shown, the pull rod 4 is in the extended position, and the folding rod structure at its end is located within the second guide groove 303 of the clamping member 3. At this time, the two clamping members 3 are compressed under the action of internal springs or other elastic elements (not shown in the figure), and the distance between the pressing protrusions 301 on the two different clamping members 3 is minimal. The chip body 8 placed on the two support members 6 is clamped.

[0027] Unlocked state: When it is necessary to remove the chip, push the end of the lever 4 into the channel, and its end will retract from the second guide groove 303 through the inclined surface to the first guide groove 302. The clamping member 3 retracts inward under the action of the internal reset spring, and press the protrusion 301 to release the chip, so that the chip body 8 can be safely removed.

[0028] When the pressure exerted by the protrusion 301 on the chip body 8 is greater than the outward pushing force of the spring 7, the chip body 8 pushes the support 6 to compress the spring 7, thereby moving the chip body 8 downward as a whole and preventing the chip body 8 from being crushed.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A chip testing fixture, comprising a base (1), characterized in that: The base (1) has a through groove (101) in the middle. A set of clamping parts (3) and a set of supporting parts (6) are installed in the through groove (101). The clamping parts (3) and the supporting parts (6) cooperate to clamp the chip body (8). A pull rod (4) is installed on the base (1), and the pull rod (4) drives the clamping member (3) to retract.

2. The chip testing fixture according to claim 1, characterized in that: The base (1) has two relatively distributed first grooves (102) and two relatively distributed long grooves (103). The long groove (103) is connected to the corresponding first sliding groove (102); Each of the first slide grooves (102) is equipped with a clamping member (3), and the clamping member (3) is provided with a first guide groove (302) and a second guide groove (303) that are interconnected. The end of the U-shaped pull rod (4) is placed in the channel formed by the long groove (103), the first guide groove (302) and the second guide groove (303).

3. A chip testing fixture according to claim 2, characterized in that: The first guide groove (302) and the second guide groove (303) are connected by an inclined surface; When the pull rod (4) is pulled, the folded rod structure at its end slides from the first guide groove (302) through the inclined surface into the second guide groove (303). During this process, the folded rod structure interacts with the inclined surface, driving the clamping member (3) to generate lateral displacement and retract into the first slide groove (102).

4. A chip testing fixture according to claim 3, characterized in that: Both the first guide groove (302) and the second guide groove (303) are provided with spring pieces (5), which are in contact with the end of the pull rod (4) to eliminate the assembly gap between the pull rod (4) and the guide groove.

5. A chip testing fixture according to claim 2, characterized in that: The clamping member (3) has at least one pressing protrusion (301) on one side surface, and the pressing protrusion (301) extends out of the first sliding groove (102).

6. A chip testing fixture according to claim 1, characterized in that: The base (1) is also provided with two oppositely distributed second sliding grooves (104), wherein the first sliding groove (102) and the second sliding groove (104) are not located on the same side; Each of the second slide grooves (104) is equipped with a support (6), and a spring (7) is installed on the back of the support (6). The two support members (6) support the chip body (8).

7. A chip testing fixture according to claim 1, characterized in that: The support member (6) has protruding edges (601) on both sides, and each protruding edge (601) has at least two mounting grooves (602), and a roller (603) is installed in the mounting groove (602).

8. A chip testing fixture according to claim 7, characterized in that: The support member (6) has multiple toothed grooves (604) on the side extending out of the second slide groove (104).

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