Cam pressurization chip test equipment and system

Abstract

The utility model provides a cam pressurization chip test device and system. The cam pressurization chip test device comprises a test base; the manual testing cover comprises a shell, a driving assembly and a pressing assembly, the driving assembly comprises a handle, a cam shaft and an eccentric cam, the eccentric cam is arranged in the shell, one end of the cam shaft is connected with the handle, the other end of the cam shaft is connected with the eccentric cam, and the pressing assembly abuts against the eccentric cam. According to the utility model, the to-be-tested chip on the test base is pressed through the manual test cover, and the manual test cover applies the pressing force by adopting the pressing assembly comprising a cam structure, so that the transmission efficiency of the force can be improved, the stability of the pressing process is ensured, the driving difficulty is reduced, and the application range of the manual test cover can be widened. Compared with a conventional manual testing cover structure at the present stage, the manual testing cover structure has the advantages of being flexible to use, convenient to adjust, wide in use scene, stable and efficient in action effect and the like, and a new design thought is provided for the chip testing technology.

Description

TECHNICAL FIELD

[0001] The utility model relates to chip testing technical field, specifically a cam pressurization chip test equipment and system. BACKGROUND

[0002] In recent years, with the rapid development of semiconductor technology, the chip industry presents a high growth trend. The chip integration continues to rise, and the number of pins of large-size chips increases sharply, and the number of pins of some chips even reaches tens of thousands. Correspondingly, to ensure the comprehensiveness and accuracy of the test, the number of probes also increases significantly, reaching tens of thousands. In the chip testing process, to achieve reliable and stable electrical connection between the chip pins and the probes, the pressing force required for the chip also increases, often exceeding 300Kg.

[0003] Currently, the hand test cover widely used in the chip testing link mainly includes two types of rotating down pressure type and overturning down pressure type based on threads. The rotating down pressure type hand test cover based on threads realizes the pressing operation of the chip through rotating threads. However, when the required pressing force increases, the friction between the threads increases sharply, and the operator needs to exert a lot of force to complete the rotating operation, which seriously affects the work efficiency. At the same time, frequent heavy rotation will cause rapid wear of the threads, not only increasing the maintenance cost of the hand test cover, but also possibly causing unstable pressing force due to thread wear, affecting the accuracy of the test results.

[0004] The overturning down pressure type hand test cover realizes the pressing of the chip by adopting an overturning structure. However, this design has many disadvantages. The hand test cover and the base must be made in one piece and cannot be used separately, which greatly limits the universality of the hand test cover in different testing scenarios. In addition, since a large amount of heat is generated during the testing of large-size chips, it is usually necessary to provide air cooling or water cooling components on the hand test cover for heat dissipation. This greatly increases the overall weight of the hand test cover, and in the open state, the heavy hand test cover will generate a large stress between the base and the circuit board, which may cause the circuit board to deform, thereby affecting the stability of the chip testing.

[0005] In summary, the two existing hand test covers have the problems of laborious operation and unreasonable structure design when dealing with large-size, multi-pin chip testing, and cannot meet the actual needs of the current chip testing industry. SUMMARY

[0006] Therefore, the utility model wants to solve the technical problem of overcoming the inconvenience and low flexibility of the chip testing in the prior art when the required pressing force is large, and provides a cam pressurization chip test equipment and system.

[0007] To solve the above technical problems, the utility model provides a cam pressurization chip test equipment, it includes: test base, the chip to be tested is arranged in the test base, hand test cover, the hand test cover is arranged above the test base, it includes shell, drive assembly and compression assembly, the drive assembly includes at least one handle, at least one camshaft and at least one eccentric cam, at least one the eccentric cam is arranged inside the shell, one end of the camshaft is connected the handle, the other end is connected the eccentric cam, to drive the eccentric cam around the axial rotation of the camshaft through the handle, the compression assembly is arranged inside the shell, and it is mutually abutted with the eccentric cam, to extrude / release the chip to be tested through the eccentric cam.

[0008] In an embodiment of the utility model, the drive assembly includes a connecting rod, two handles, two camshafts and two eccentric cams, the two eccentric cams are symmetrically abutted on opposite sides of the compression assembly, and are respectively connected to the two handles through the two camshafts, and the two handles are connected through the connecting rod to rotate synchronously.

[0009] In an embodiment of the utility model, the compression assembly includes a transmission member, a fixed lower pressing member, an elastic lower pressing member and an extrusion block, one side of the transmission member is abutted with the eccentric cam, and the other side is connected to the fixed lower pressing member and the elastic lower pressing member, wherein the fixed lower pressing member is connected to the edge of the transmission member, and is hollow inside, the elastic lower pressing member is arranged inside the fixed lower pressing member, one side of which is connected to the transmission member through an elastic member, and the other side is connected to the extrusion block, and the extrusion block is arranged towards the chip to be tested.

[0010] In an embodiment of the utility model, the transmission member is slidably connected to the shell through a plurality of first connecting pins and elastic members, the fixed lower pressing member is fixedly connected to the transmission member through a plurality of second connecting pins, the elastic lower pressing member is slidably connected to the transmission member through a plurality of third connecting pins and elastic members, and the extrusion block is fixedly connected to the elastic lower pressing member through at least one fourth connecting pin.

[0011] In an embodiment of the utility model, one side of the transmission member towards the elastic lower pressing member is provided with a plurality of first floating cavities, one side of the elastic lower pressing member towards the transmission member is provided with a plurality of second floating cavities, a plurality of the first floating cavities and a plurality of the second floating cavities correspond one by one and are arranged at intervals in the moving direction, and a plurality of the elastic members are correspondingly arranged between a plurality of the first floating cavities and a plurality of the second floating cavities.

[0012] In an embodiment of the utility model, the extrusion block includes a connecting part and an extrusion part, the connecting part is embedded and connected inside the elastic pressing part, the extrusion part is arranged at the middle part of the connecting part and protrudes towards the chip to be tested.

[0013] In an embodiment of the utility model, the test base includes a table body and a connecting plate, the connecting plate is arranged at the middle part of the table body towards the hand test cover side, the inside is equipped with a containing groove, and the chip to be tested is arranged in the containing groove.

[0014] In an embodiment of the utility model, at least one locking piece is arranged on the shell, the locking piece is rotatably connected to the shell and detachably connected to the test base.

[0015] In an embodiment of the utility model, at least one hooking groove is arranged at the edge of the test base, a hooking claw is arranged on the locking piece, at least one hooking claw is arranged corresponding to at least one hooking groove, and the hooking claw can be engaged in the hooking groove.

[0016] The utility model also provides a cam pressurization chip test system which includes at least one cam pressurization chip test device.

[0017] The above technical scheme of the utility model has the following advantages compared with the prior art.

[0018] The cam pressurization chip test device and system press the chip to be tested on the test base through the hand test cover, wherein the hand test cover adopts the pressing assembly containing the cam structure to apply the pressing force, which can not only improve the transmission efficiency of the force, ensure the stability of the pressing process, reduce the driving difficulty, but also can improve the use range. ACCURACY OF DRAWINGS

[0019] In order to make the content of the utility model more easily understood clearly, the utility model is further explained in detail in the following according to the specific embodiment of the utility model and combines the attached drawings.

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the cam pressurization chip test device in the preferred embodiment of the utility model;

[0021] Figure 2 It is Figure 1The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0022] Figure 3 is Figure 1 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0023] Figure 4 is Figure 3 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0024] Figure 5 is Figure 2 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0025] Figure 6 is Figure 2 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0026] Figure 7 is Figure 2 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0027] Figure 8 is Figure 2 The perspective view of the hand cover of the cam press chip test equipment is shown in the figure.

[0028] The perspective view of the hand cover of the cam press chip test equipment is shown in the figure. DETAILED DESCRIPTION

[0029] The utility model will be further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. Example one

[0030] Reference Figure 1As shown, the embodiment provides a cam pressing chip testing device, which comprises a testing base 100, in which a chip to be tested is arranged; a hand testing cover 200 arranged above the testing base 100, which comprises a housing 210, a driving assembly 220 and a pressing assembly 230, the driving assembly 220 comprises at least one handle 221, at least one cam shaft 223 and at least one eccentric cam 224, at least one of the eccentric cams 224 is arranged inside the housing 210, one end of the cam shaft 223 is connected to the handle 221, and the other end is connected to the eccentric cam 224, so as to drive the eccentric cam 224 to rotate around the axial direction of the cam shaft 223 through the handle 221, and the pressing assembly 230 is arranged inside the housing 210 and abuts against the eccentric cam 224, so as to press / release the chip to be tested through the eccentric cam 224.

[0031] The cam pressing chip testing device described in the embodiment presses the chip to be tested on the testing base 100, wherein the hand testing cover 200 applies pressing force by using the pressing assembly 230 containing a cam structure, which not only can improve the transmission efficiency of force, ensure the stability of the pressing process, reduce the driving difficulty, but also can improve the use range. Compared with the conventional hand testing cover structure at the present stage, the application has the advantages of flexible use, easy adjustment, wide use scene, stable and efficient effect, etc., and provides a new design idea for chip testing technology.

[0032] In the embodiment, the testing base 100 is used to carry the chip to be tested, which comprises a table body 110 and a connecting plate 130, the connecting plate 130 is arranged at the middle part of the side of the table body 110 facing the hand testing cover 200, and the inside of the connecting plate 130 is provided with a containing groove 120, the chip to be tested is arranged in the containing groove 120, further, the containing groove 120 in the embodiment is configured as a profiling structure with the same profile shape as the chip to be tested, and the edge of the connecting plate 130 is provided with at least one hooking groove 131. Further, when testing the chip, a circuit board (not shown in the figure) for testing the chip is arranged between the table body 110 and the connecting plate 130 as needed, and the pins of the chip to be tested in the containing groove 120 are in contact with the corresponding contacts on the circuit board.

[0033] Further, the shell 210 in the embodiment is provided with at least one locking member 211, which is rotationally connected to the shell 210 and detachably connected to the test base 100. Specifically, the test base 100 is provided with at least one hooking groove 131, and the locking member 211 is provided with a hooking claw 2111, at least one of the hooking claws 2111 is correspondingly arranged with at least one of the hooking grooves 131, and the hooking claw 2111 can be engaged in the hooking groove 131. Therefore, the test base 100 and the hand cover 200 in the application can be connected or separated according to actual use requirements, thereby improving the use flexibility through the modular structure.

[0034] Referring to Figures 2 to 4 In the embodiment, the shell 210 is used to connect and fix other structures of the hand cover 200, and is also used to form protection for the internal structure of the hand cover 200. The driving assembly 220 is used to apply driving force to the compression assembly 230, and the compression assembly 230 is used to directly contact the chip to be tested to realize compression test. Specifically, the driving assembly 220 in the embodiment includes a connecting rod 222, two handles 221, two camshafts 223, and two eccentric cams 224. The two eccentric cams 224 are symmetrically abutted against opposite sides of the compression assembly 230, and are connected to the two handles 221 through the two camshafts 223, respectively. The two handles 221 are connected through the connecting rod 222 to rotate synchronously. Based on the above structure, the operator can synchronously drive the two handles 221 to rotate through the connecting rod 222, and then sequentially drive the corresponding camshafts 223 and eccentric cams 224 to rotate, and convert the rotary force into linear driving force to the compression assembly 230 through the eccentric cams 224.

[0035] Referring to Figure 4 and Figure 5 In the embodiment, the compression assembly 230 includes a transmission member 231, a fixed pressing member 232, an elastic pressing member 233, and an extrusion block 234. One side of the transmission member 231 is abutted against the eccentric cam 224, and the other side is connected to the fixed pressing member 232 and the elastic pressing member 233. The fixed pressing member 232 is connected to the edge of the transmission member 231 and is hollow inside. The elastic pressing member 233 is arranged inside the fixed pressing member 232, and one side thereof is connected to the transmission member 231 through an elastic member (not shown in the figure), and the other side is connected to the extrusion block 234. The extrusion block 234 is arranged towards the chip to be tested.

[0036] The transmission member 231 is used to directly contact the eccentric cam 224 to realize force transmission of the driving assembly 220, and the transmission member 231 is slidably connected to the shell 210 through a plurality of first connecting pins 2311 and corresponding elastic members. The corresponding first connecting pins 2311 are arranged in the shell 210 and can move along the extension direction thereof. The two ends of the elastic member respectively push the first connecting pin 2311 and the shell 210, so that when the reverse driving connecting rod 222 is driven, the transmission member 231 always abuts against the eccentric cam 224 under the action of the elastic force and moves upward, thereby releasing the chip.

[0037] The fixed lower pressing member 232 is fixedly connected to the transmission member 231 through a plurality of second connecting pins 2321 to realize the hard limiting structure between the hand measurement cover 200 and the test base 100. The elastic lower pressing member 233 is used to realize the elastic connection structure between the extrusion block 234 and the transmission member 231.

[0038] Further, as shown in FIGS. 1 and 2, Figure 6 and Figure 7 The transmission member 231 in the embodiment is provided with a plurality of first floating cavities 2312 on the side facing the elastic lower pressing member 233. The elastic lower pressing member 233 is provided with a plurality of second floating cavities 2332 on the side facing the transmission member 231. The plurality of first floating cavities 2312 and the plurality of second floating cavities 2332 correspond to each other and are arranged at intervals in the moving direction. A plurality of elastic members are arranged between the plurality of first floating cavities 2312 and the plurality of second floating cavities 2332. The elastic member can be a spring or other elastic part. Based on this, the elastic lower pressing member 233 in the embodiment can be elastically connected with the transmission member 231, so that the chip to be tested can be buffered and protected when being pressed, the chip is prevented from being crushed due to local overload caused by errors, the pressure distribution is more uniform, and the stability of the chip test is ensured. Similarly, the elastic lower pressing member 233 is slidably connected to the transmission member 231 through a plurality of third connecting pins 2331 and corresponding elastic members.

[0039] In addition, the middle parts of the shell 210, the transmission member 231 and the elastic lower pressing member 233 in the embodiment are configured as hollow structures, so as to provide installation and connection space for structures such as external air cooling fins or water cooling plates. Further, the base material of the extrusion block 234 in the embodiment is preferably copper, and in different embodiments, it can also be configured as other materials with good heat conduction performance, and the utility model does not make specific limitation on this.

[0040] Further, the extrusion block 234 in the embodiment is fixedly connected to the elastic pressing piece 233 by at least one fourth connecting pin. Specifically, the fourth connecting pin is inserted into the fourth connecting pin hole 2333 on the elastic pressing piece 233 in the horizontal direction and then fixedly connected to the side wall of the extrusion block 234.

[0041] Referring to Figure 8 As shown in the figure, the extrusion block 234 comprises a connecting portion 2341 and an extrusion portion 2342. The connecting portion 2341 is embeddedly connected to the inside of the elastic pressing piece 233. The extrusion portion 2342 is arranged at the middle portion of the connecting portion 2341 and protrudes towards the chip to be tested. The connecting portion 2341 is used to realize the connection between the extrusion block 234 and the elastic pressing piece 233. The extrusion portion 2342 directly acts on the chip to be tested to realize the extrusion of the chip. Embodiment Two

[0042] The embodiment provides a cam extrusion chip testing system, which comprises at least one cam extrusion chip testing device as described in Embodiment One.

[0043] In summary, the cam extrusion chip testing device and system disclosed by the utility model can press the chip to be tested on the testing base 100 by the hand test cover 200. The hand test cover 200 adopts the pressing assembly 230 containing the cam structure to apply the pressing force, which can improve the transmission efficiency of the force, ensure the stability of the pressing process, reduce the driving difficulty, improve the use range, and has the advantages of flexible use, convenient adjustment, wide use scene, stable and efficient effect, and the like, and provides a new design idea for the chip testing technology.

[0044] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments are not required to be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the utility model.

Claims

1. A cam-pressurized chip testing device, characterized in that: include: Test base, in which the chip to be tested is placed; The hand-operated test cover is disposed above the test base and includes a housing, a drive assembly, and a pressing assembly. The drive assembly includes at least one handle, at least one camshaft, and at least one eccentric cam. At least one eccentric cam is disposed inside the housing. One end of the camshaft is connected to the handle, and the other end is connected to the eccentric cam, so that the eccentric cam can be driven to rotate around the axial direction of the camshaft by the handle. The pressing assembly is disposed inside the housing and abuts against the eccentric cam to squeeze / release the chip to be tested by the eccentric cam.

2. The cam-pressurized chip testing device according to claim 1, characterized in that: The drive assembly includes a connecting rod, two handles, two camshafts, and two eccentric cams. The two eccentric cams symmetrically abut against opposite sides of the pressing assembly and are respectively connected to the two handles through the two camshafts. The two handles are connected to each other through the connecting rod to rotate synchronously.

3. The cam-pressurized chip testing device according to claim 1, characterized in that: The pressing assembly includes a transmission component, a fixed pressing component, an elastic pressing component, and an extrusion block. One side of the transmission component abuts against the eccentric cam, and the other side is connected to the fixed pressing component and the elastic pressing component. The fixed pressing component is connected to the edge of the transmission component and is hollow inside. The elastic pressing component is disposed inside the fixed pressing component, and one side of it is connected to the transmission component through an elastic element, while the other side is connected to the extrusion block. The extrusion block is positioned facing the chip to be tested.

4. The cam-pressurized chip testing device according to claim 3, characterized in that: The transmission component is slidably connected to the housing via multiple first connecting pins and elastic elements. The fixed pressing component is fixedly connected to the transmission component via multiple second connecting pins. The elastic pressing component is slidably connected to the transmission component via multiple third connecting pins and elastic elements. The pressing block is fixedly connected to the elastic pressing component via at least one fourth connecting pin.

5. The cam-pressurized chip testing device according to claim 3, characterized in that: The transmission member has a plurality of first floating cavities on the side facing the elastic pressing member, and the elastic pressing member has a plurality of second floating cavities on the side facing the transmission member. The plurality of first floating cavities and the plurality of second floating cavities correspond one-to-one and are spaced apart in their moving direction. The plurality of elastic members are correspondingly disposed between the plurality of first floating cavities and the plurality of second floating cavities.

6. The cam-pressurized chip testing device according to claim 3, characterized in that: The extrusion block includes a connecting part and an extrusion part. The connecting part is embedded in the elastic pressing member, and the extrusion part is located in the middle of the connecting part and protrudes towards the chip to be tested.

7. The cam-pressurized chip testing device according to claim 1, characterized in that: The test base includes a platform and a connecting plate. The connecting plate is located in the middle of the platform facing the hand test cover, and has a receiving groove inside, in which the chip to be tested is placed.

8. The cam-pressurized chip testing device according to claim 1, characterized in that: The housing is provided with at least one locking member, which is rotatably connected to the housing and detachably connected to the test base.

9. The cam-pressurized chip testing device according to claim 8, characterized in that: The test base has at least one hook groove on its edge, and the locking member has a hook claw. At least one hook claw is provided corresponding to at least one hook groove, and the hook claw can be engaged in the hook groove.

10. A cam-pressurized chip testing system, characterized in that: It includes at least one cam-pressurized chip testing device as described in any one of claims 1 to 9.

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