Chip test golden finger

Abstract

The utility model relates to the technical field of chip testing, and discloses a chip testing golden finger, which comprises a base and a contact elastic sheet, a cavity is arranged in the base, a conducting strip is fixed in the cavity, a rectangular hole communicated with the cavity is arranged on the side wall of the base, and the contact elastic sheet is arranged in the rectangular hole. A plurality of contact elastic sheets electrically connected with the conductive sheets are arranged in the rectangular hole in a penetrating mode, the exposed ends of the plurality of contact elastic sheets are bent upwards to form contact pins, clamping grooves are formed in the left inner wall and the right inner wall of the rectangular hole, and a protective sleeve is further inserted into an outer port of the rectangular hole; elastic clamping pieces matched with the clamping grooves are fixed to the left outer wall and the right outer wall of the protective sleeve. According to the utility model, the contact elastic sheet can be effectively protected during the processing and transportation process of the golden finger, and is not easy to damage or bend by external force.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, and particularly relates to a chip testing gold finger. Background Art

[0002] With the rapid development of modern electronic products, the production of the core component chips is becoming increasingly important. Before the chips enter the market, it is necessary to test whether each pin contact can conduct electricity to determine whether the chips can be used normally. During the testing process, it is necessary to connect the chip to be tested with the test circuit board to test the conduction of the test circuit board. However, the components on the test circuit board are all connected by soldering, and the chip to be tested cannot be soldered on the test circuit board for testing. Therefore, it is necessary to use a gold finger to connect the chip to be tested with the test circuit board, that is, the pins of the chip to be tested are in contact with the gold finger, and the pins of the gold finger are in contact with the test circuit board, so that the chip to be tested is indirectly connected to the test circuit board.

[0003] However, the current gold fingers still have some deficiencies. For example, the contact shrapnel lacks protection during the processing and transportation process, and is easily damaged or bent by external forces, seriously affecting the normal use of the gold fingers. Content of the Utility Model

[0004] The purpose of the utility model is to provide a chip testing gold finger to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A chip testing gold finger includes a base and contact shrapnel. A cavity is provided inside the base, and a conductive sheet is fixed inside the cavity. A rectangular hole communicating with the cavity is also provided on the side wall of the base. A plurality of the contact shrapnel electrically connected to the conductive sheet penetrate through the rectangular hole. The exposed ends of the plurality of contact shrapnel bend upward to form contact feet. Clamping grooves are provided on the left and right inner walls of the rectangular hole, and a protective sleeve is inserted into the outer port of the rectangular hole. Elastic clamping members matched with the clamping grooves are fixed on the left and right outer walls of the protective sleeve.

[0006] As a further improvement of the above solution, a rectangular convex ring is fixed on the inner wall of the outer port of the protective sleeve. A protective cover is detachably sleeved inside the protective sleeve. A limiting convex ring is fixed on the outer wall of the outer port of the protective cover. The length of the assembled protective cover and the protective sleeve is greater than the length of the contact shrapnel.

[0007] As a further improvement of the above solution, the clamping groove includes a guiding groove and a clamping groove that communicate with each other. The depth of the clamping groove is greater than the depth of the guiding groove, and the clamping groove is provided at the outer port of the rectangular hole.

[0008] As a further improvement to the above solution, the elastic clamping member includes a guiding piece and a clamping block which are integrally formed. Both the guiding piece and the clamping block are made of elastic plastic, and the guiding piece is fixed to the outer wall of the protective sleeve in an inclined state.

[0009] As a further improvement to the above solution, a plurality of contact holes are formed on the upper surface of the base. A plurality of interface contact blocks are electrically connected to the upper surface of the conductive sheet, and the plurality of interface contact blocks are respectively sleeved inside the plurality of contact holes in a one-to-one correspondence.

[0010] As a further improvement to the above solution, the heights of the plurality of interface contact blocks are all greater than the height of the contact holes, and the tops of the interface contact blocks protrude from the upper ports of the contact holes.

[0011] As a further improvement to the above solution, a plurality of positioning holes and fixing holes are also formed on the upper surface of the base, and the positioning holes and the fixing holes are distributed at the four corners of the base.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, a protective sleeve is inserted into the outer port of the rectangular hole. Elastic clamping members are fixed to the left and right outer walls of the protective sleeve. The elastic clamping members are used in cooperation with the clamping grooves formed on the left and right inner walls of the rectangular hole for installation, so that the protective sleeve can be disassembled and assembled flexibly. A protective cover is detachably sleeved inside the protective sleeve. Therefore, after the protective sleeve and the protective cover are combined, they can completely cover the contact elastic piece. Therefore, during the processing and transportation of the gold finger, the contact elastic piece can be effectively protected and is not easily damaged or bent by external forces. Further, when the gold finger is installed on the test socket, the protective cover can be removed and the protective sleeve can be retained for insertion, so as to facilitate the exposed end of the contact elastic piece to be lapped on the chip test slot of the test socket. The protective sleeve can prevent uncertain factors in the external environment from affecting the chip test, and the disassembly and assembly of the protective sleeve are very flexible, with a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic structural diagram of the present utility model before assembly;

[0016] Figure 2 is a schematic assembly structural diagram of the base and the conductive sheet in the present utility model;

[0017] Figure 3 For the present utility model Figure 2 is a partial enlarged structural schematic diagram of part A in the present utility model;

[0018] Figure 4 is a structural schematic diagram after the protective cover and the protective cap of the present utility model are assembled;

[0019] Figure 5 is a structural schematic diagram before the protective cover and the protective cap of the present utility model are assembled;

[0020] Figure 6 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 7 is a structural schematic diagram after the protective cap of the present utility model is removed.

[0022] In the figure: 1 - base; 2 - contact spring piece; 3 - cavity; 4 - rectangular hole; 5 - contact pin; 6 - clamping groove; 601 - guiding groove; 602 - clamping slot; 7 - elastic clamping member; 701 - guiding piece; 702 - clamping block; 8 - protective cover; 9 - rectangular convex ring; 10 - protective cap; 11 - limiting convex ring; 12 - contact point hole; 13 - interface contact point block; 14 - conductive sheet; 15 - positioning hole; 16 - fixing hole. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] A chip test gold finger, as Figure 1 and Figure 2 shown, includes a base 1 and a contact spring piece 2. A cavity 3 is arranged inside the base 1, a conductive sheet 14 is fixed inside the cavity 3, a rectangular hole 4 communicating with the cavity 3 is also opened on the side wall of the base 1, and a plurality of contact spring pieces 2 electrically connected to the conductive sheet 14 are penetrated inside the rectangular hole 4. The exposed ends of the plurality of contact spring pieces 2 are bent upward to form contact pins 5. There is no intermediate transfer contact between the conductive sheet 14 and the contact spring piece 2, reducing the internal resistance of the test piece itself and improving the accuracy of the test; a plurality of positioning holes 15 and fixing holes 16 are also opened on the upper surface of the base 1. The positioning holes 15 and the fixing holes 16 are both distributed at the four corners of the base 1. The positioning holes 15 are used to sleeve the outer wall of the positioning rod on the test seat, and the purpose is to install the gold finger at a predetermined position on the test seat. Screws can be inserted into the fixing holes 16, so as to facilitate fixing the gold finger on the test seat.

[0025] As Figure 1 , Figure 3 and Figure 4 shown, clamping grooves 6 are provided on both the left and right inner walls of the rectangular hole 4. The clamping groove 6 includes a guiding groove 601 and a clamping groove 602 that communicate with each other. The depth of the clamping groove 602 is greater than that of the guiding groove 601, and the clamping groove 602 is provided at the outer port of the rectangular hole 4. A protective sleeve 8 is also inserted into the outer port of the rectangular hole 4. Elastic clamping members 7 that are matched with the clamping grooves 6 are fixed on both the left and right outer walls of the protective sleeve 8. The elastic clamping member 7 includes a guiding piece 701 and a clamping block 702 that are integrally formed. Both the guiding piece 701 and the clamping block 702 are made of elastic plastic, and the guiding piece 701 is fixed to the outer wall of the protective sleeve 8 in an inclined state. Therefore, when installing the protective sleeve 8 to the outer end of the rectangular hole 4, first press the clamping block 702 with two fingers, so that the guiding piece 701 continuously approaches the left and right outer walls of the protective sleeve 8. Then align the protective sleeve 8 with the entrance of the rectangular hole 4. At this time, the guiding piece 701 can just be aligned and snapped into the inside of the only clamping groove 602, and continuously push the protective sleeve 8 inward until it is pushed to the deepest position. Then release the clamping block 702 with the fingers. Under the rebounding action of the guiding piece 701, the clamping block 702 can be clamped inside the clamping groove 602. Thus, the installation of the protective sleeve 8 can be completed. Similarly, the protective sleeve 8 can be removed according to the reverse process. Therefore, the disassembly and assembly process of the protective sleeve 8 is very simple and convenient.

[0026] As Figure 1 and Figure 5 shown, a rectangular convex ring 9 is fixed on the inner wall of the outer port of the protective sleeve 8. A protective cover 10 is detachably sleeved inside the protective sleeve 8. A limiting convex ring 11 is fixed on the outer wall of the outer port of the protective cover 10. The length of the protective cover 10 and the protective sleeve 8 assembled together is greater than the length of the contact elastic piece 2. The specific assembly method of the protective sleeve 8 and the protective cover 10 is as follows: Before installing the protective sleeve 8 at the outer port of the rectangular hole 4, first insert the end of the protective cover 10 with the cover plate from the end of the protective sleeve 8 without the limiting convex ring 11, and continuously pull the protective cover 10 out from the end of the protective sleeve 8 with the limiting convex ring 11. Among them, the rectangular convex ring 9 will hinder the movement of the limiting convex ring 11, so as to prevent the protective cover 10 from falling off from the inside of the protective sleeve 8.

[0027] As Figure 1 and Figure 2 shown, a plurality of contact holes 12 are provided on the upper surface of the base 1. A plurality of interface contact blocks 13 are electrically connected to the upper surface of the conductive sheet 14, and a plurality of interface contact blocks 13 are respectively sleeved inside a plurality of contact holes 12 in one-to-one correspondence. The heights of a plurality of interface contact blocks 13 are all greater than the height of the contact holes 12. The top ends of the interface contact blocks 13 protrude from the upper ports of the contact holes 12. The interface contact blocks 13 are provided to facilitate the electrical connection between the gold fingers and the external test circuit board.

[0028] During the processing and transportation of the present utility model, as Figure 1 and Figure 6 shown, first assemble the protective cover 10 inside the protective sleeve 8. Since elastic clamping members 7 are fixed on the left and right outer walls of the protective sleeve 8, the elastic clamping members 7 are used to cooperate with the clamping grooves 6 provided on the left and right inner walls of the rectangular hole 4 for installation. Pressing the elastic clamping members 7 can flexibly install the combination of the protective sleeve 8 and the protective cover 10 at the outer end of the rectangular hole 4, and it can completely cover the contact elastic piece 2, so that the contact elastic piece 2 can be effectively protected and is not easily damaged or bent by external forces.

[0029] When the present utility model installs the gold finger on the test socket, as Figure 1 and Figure 7 shown, the protective cover 10 can also be removed and the protective sleeve 8 can be retained for plugging, so as to facilitate the exposed end of the contact elastic piece 2 to be lapped on the chip test groove of the test socket. The setting of the protective sleeve 8 can prevent the influence of uncertain factors in the external environment on the chip test, and the disassembly and assembly of the protective sleeve 8 are very flexible, with a simple structure and low cost.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A chip test gold finger, comprising a base (1) and a contact spring piece (2), characterized in that: The interior of the base (1) is provided with a cavity (3). A conductive sheet (14) is fixed inside the cavity (3). A rectangular hole (4) communicating with the cavity (3) is also formed in the side wall of the base (1). A plurality of contact elastic sheets (2) electrically connected to the conductive sheet (14) are penetrated through the interior of the rectangular hole (4). The exposed ends of the plurality of contact elastic sheets (2) are bent upward to form contact feet (5). Clamping grooves (6) are formed in the left and right inner walls of the rectangular hole (4). A protective sleeve (8) is inserted into the outer port of the rectangular hole (4). Elastic clamping members (7) cooperatively installed with the clamping grooves (6) are fixed on the left and right outer walls of the protective sleeve (8).

2. The chip test gold finger according to claim 1, wherein: A rectangular convex ring (9) is fixed on the inner wall of the outer port of the protective sleeve (8). A protective cover (10) is detachably sleeved inside the protective sleeve (8). A limiting convex ring (11) is fixed on the outer wall of the outer port of the protective cover (10). The length of the protective cover (10) and the protective sleeve (8) assembled together is greater than the length of the contact elastic sheet (2).

3. A chip test gold finger according to claim 1, characterized in that: The clamping groove (6) includes a guiding groove (601) and a clamping slot (602) communicating with each other. The depth of the clamping slot (602) is greater than the depth of the guiding groove (601), and the clamping slot (602) is arranged at the outer port of the rectangular hole (4).

4. A chip test gold finger according to claim 1, characterized in that: The elastic clamping member (7) includes a guiding piece (701) and a clamping block (702) integrally formed. Both the guiding piece (701) and the clamping block (702) are made of elastic plastic. The guiding piece (701) is fixed on the outer wall of the protective sleeve (8) in an inclined state.

5. A chip test gold finger according to claim 1, characterized in that: A plurality of contact holes (12) are formed in the upper surface of the base (1). A plurality of interface contact blocks (13) are electrically connected to the upper surface of the conductive sheet (14), and the plurality of interface contact blocks (13) are respectively sleeved inside the plurality of contact holes (12) in one-to-one correspondence.

6. A chip test gold finger according to claim 5, characterized in that: The heights of the plurality of interface contact blocks (13) are all greater than the height of the contact holes (12). The top ends of the interface contact blocks (13) protrude from the upper ports of the contact holes (12).

7. A chip test gold finger according to claim 1, characterized in that: A plurality of positioning holes (15) and fixing holes (16) are also formed in the upper surface of the base (1). The positioning holes (15) and the fixing holes (16) are both distributed at the four corners of the base (1).

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