A radio frequency test probe structure

Abstract

The utility model discloses a radio frequency test probe structure relates to radio frequency test probe technical field, and it is first casing, the inside nest of first casing has first insulator seat, the inside of first insulator seat is penetrated and has first needle body, the outside lower part of first casing is hinged with a plurality of clamping plates, and the lower end inboard of clamping plate is equipped with the clamping post, second casing, second casing is screwed with first casing, the outside of second casing is equipped with the clamping slot in the position of clamping post, and the clamping post is connected with the clamping slot, and the inside nest of second casing has second insulator seat, and the inside sliding nest of second insulator seat has second needle body. The utility model discloses through second casing first with first casing screw connection, then through the clamping plate on first casing, and the clamping post on the clamping plate is connected in the corresponding clamping slot on second casing, thereby realizes double locking, solves the problem of thread loosening under high frequency vibration, and improves the test stability.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency test probe technology, and specifically to a radio frequency test probe structure. Background Technology

[0002] Radio frequency (RF) test probes are precision electronic components specifically designed for testing high-frequency signals. They are primarily used to establish an electrical connection between the device under test (DUT) and the testing instrument during the testing process, thereby enabling the measurement, analysis, and debugging of RF signals. RF test probes have a sophisticated structural design, typically consisting of a probe tube, a probe core, and a spring. Under the action of the spring, the probe core can make tight contact with the pins or test points of the DUT, forming a stable electrical connection and ensuring smooth transmission of RF signals.

[0003] Currently, most RF test probes use a single-shell and single-spring structure: the shell and the probe body are directly threaded together, and the threads are prone to loosening under axial impact or high-frequency vibration; and only the tip spring provides cushioning, when the test stroke is large, the spring compression is close to the limit, resulting in overpressure marks or even cracks between the tip and the chip pad. Utility Model Content

[0004] The purpose of this invention is to provide a radio frequency test probe structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a radio frequency test probe structure, comprising: A first housing, with a first insulating seat nested inside the first housing, a first needle penetrating through the first insulating seat, the lower part of the first needle abutting against an insulating disc, and a plurality of locking plates hinged to the lower outer side of the first housing, with locking posts provided on the inner side of the lower end of the locking plates; The second housing is threadedly connected to the first housing. A slot is provided on the outer side of the second housing corresponding to the position of the locking post. The locking post engages with the slot. A second insulating seat is nested inside the second housing. The lower part of the second insulating seat slides through the second housing. A second needle body is slidably nested inside the second insulating seat. The upper end of the second needle body slides through the insulating disc and extends into the body of the first needle body. A first spring is provided between the top of the second needle body and the inner wall of the first needle body. A second spring is provided between the second insulating seat and the insulating disc.

[0006] Furthermore, the first housing has a first through cavity and a second through cavity inside, the lower part of the first through cavity has a threaded groove, and the diameter of the first through cavity is larger than the diameter of the second through cavity. The first insulating base includes an integrally formed first column and a second column. The diameter of the first column is the same as the diameter of the first through cavity and is nested within the first through cavity. The diameter of the second column is the same as the diameter of the second through cavity and is nested within the second through cavity. This ensures that the first insulating seat is installed precisely within the first housing, eliminating the eccentricity caused by traditional equal-diameter gaps.

[0007] Furthermore, a first limiting cavity is provided in the lower middle part of the first column, and a second limiting cavity is provided in the upper middle part of the second column. The inner cavity of the second limiting cavity communicates with the first limiting cavity, and the diameter of the first limiting cavity is larger than the diameter of the second limiting cavity. The first needle body includes an integrated first cylindrical part and a second cylindrical part. The diameter of the first cylindrical part is larger than that of the second cylindrical part. The height and diameter of the first cylindrical part are the same as those of the first limiting cavity. The first cylindrical part is nested in the first limiting cavity. The diameter of the second cylindrical part is the same as that of the second limiting cavity. The second cylindrical part penetrates the second limiting cavity. This ensures precise assembly and facilitates rapid assembly.

[0008] Furthermore, a receiving groove is provided in the lower middle part of the first cylindrical portion; The second needle body includes an integrated thin rod portion and a thick column head, the thick column head being slidably nested in a receiving groove, and the first spring being nested in the receiving groove; The diameter of the insulating disk is the same as the diameter of the first through cavity. The insulating disk is nested in the first through cavity. A transition hole is opened in the middle of the insulating disk. The diameter of the transition hole is smaller than the diameter of the thick column head. The thin rod slides through the transition hole.

[0009] Furthermore, the interior of the second housing is provided with a third passage cavity and a fourth passage cavity, wherein the diameter of the third passage cavity is larger than the diameter of the fourth passage cavity; The second insulating base includes an integrally formed third column and a fourth column. The diameter of the third column is the same as the diameter of the third through cavity, and the third column is nested inside the third through cavity. The diameter of the fourth column is the same as the diameter of the fourth through cavity, and the fourth column penetrates through the fourth through cavity.

[0010] Furthermore, the second insulating base has a positioning cavity extending through its upper and lower ends in the middle, and the thin rod portion is slidably nested in the positioning cavity.

[0011] Furthermore, a first limiting ring is fixed to the lower part of the insulating disk, and a second limiting ring is fixed to the upper side of the third column. The upper and lower ends of the second spring are respectively sleeved on the first limiting ring and the second limiting ring. The first limiting ring and the second limiting ring constrain the two ends of the second spring to prevent it from shifting and deforming during compression.

[0012] Furthermore, the upper outer side of the second housing is provided with an external threaded portion, which is nested in a threaded groove. The top of the second housing abuts against the bottom edge of the insulating disk, making the connection between the second housing and the first housing simple and convenient, while also effectively fixing the insulating disk.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. The second housing is first threadedly connected to the first housing, and then the locking plate on the first housing is used to lock the locking pins on the first housing into the corresponding slots on the second housing, thereby achieving double locking, solving the problem of loose threads under high-frequency vibration, and improving test stability. 2. The overall assembly is simple and easy to disassemble. The spring and needle body can be replaced independently. When one part is damaged, the corresponding part can be disassembled and replaced without replacing the whole. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional sectional view of the present invention; Figure 2 This is an overall appearance drawing of the present utility model; Figure 3 This is a three-dimensional sectional view of the first shell of this utility model; Figure 4 This utility model Figure 3 Enlarged view of part A; Figure 5 This is a three-dimensional sectional view of the first insulating base of this utility model; Figure 6 This is a three-dimensional sectional view of the first needle body of this utility model; Figure 7 This is a schematic diagram of the insulating disk structure of this utility model; Figure 8 This is a perspective sectional view of the second insulating base of this utility model; Figure 9 This is a schematic diagram of the second housing of the present invention; Figure 10 This is a cross-sectional view of the second housing of this utility model.

[0016] Explanation of reference numerals in the attached figures: 10. First housing; 11. First through cavity; 12. Second through cavity; 13. Threaded groove; 14. Clamping plate; 15. Clamping post; 20. First insulating base; 21. First column; 22. Second column; 23. First limiting cavity; 30. First needle body; 31. First cylindrical part; 32. Second cylindrical part; 33. Receiving groove; 40. Insulating disc; 41. Transition hole; 42. First limiting ring; 50. Second housing; 51. Third cavity; 52. Fourth cavity; 53. External threaded portion; 54. Slot; 60. Second insulating base; 61. Third column; 62. Fourth column; 63. Positioning cavity; 64. Second limiting ring; 70. Second needle body; 71. Thin rod section; 72. Thick pin head; 80. First spring; 90. Second spring. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figures 1 to 10 The radio frequency test probe structure shown includes: The first housing 10 has a first insulating seat 20 nested inside it. The first needle body 30 passes through the first insulating seat 20. The lower part of the first needle body 30 abuts against the insulating disc 40. Multiple locking plates 14 are hinged to the lower outer side of the first housing 10. The lower inner side of the locking plate 14 is provided with a locking post 15. The second housing 50 is threadedly connected to the first housing 10. A slot 54 is provided on the outer side of the second housing 50 corresponding to the position of the locking post 15. The locking post 15 is engaged with the slot 54. A second insulating seat 60 is nested inside the second housing 50. The lower part of the second insulating seat 60 slides through the second housing 50. A second needle body 70 is slidably nested inside the second insulating seat 60. The upper end of the second needle body 70 slides through the insulating disc 40 and extends into the first needle body 30. A first spring 80 is provided between the top of the second needle body 70 and the inner wall of the first needle body 30. A second spring 90 is provided between the second insulating seat 60 and the insulating disc 40.

[0019] The first housing 10 has a first through cavity 11 and a second through cavity 12 inside. The lower part of the first through cavity 11 has a threaded groove 13. The diameter of the first through cavity 11 is larger than the diameter of the second through cavity 12. The first insulating base 20 includes an integrally formed first column 21 and a second column 22. The diameter of the first column 21 is the same as the diameter of the first through cavity 11 and is nested in the first through cavity 11. The diameter of the second column 22 is the same as the diameter of the second through cavity 12 and is nested in the second through cavity 12. This ensures that the first insulating seat 20 is installed precisely within the first housing 10, eliminating the eccentricity caused by traditional equal-diameter gaps.

[0020] A first limiting cavity 23 is provided in the lower middle part of the first column 21, and a second limiting cavity 24 is provided in the upper middle part of the second column 22. The inner cavity of the second limiting cavity 24 is connected to the first limiting cavity 23, and the diameter of the first limiting cavity 23 is larger than the diameter of the second limiting cavity 24. The first needle body 30 includes an integrated first cylindrical part 31 and a second cylindrical part 32. The diameter of the first cylindrical part 31 is larger than that of the second cylindrical part 32. The height and diameter of the first cylindrical part 31 are the same as those of the first limiting cavity 23. The first cylindrical part 31 is nested in the first limiting cavity 23. The diameter of the second cylindrical part 32 is the same as that of the second limiting cavity 24. The second cylindrical part 32 penetrates the second limiting cavity 24. This ensures precise assembly and facilitates rapid assembly.

[0021] A receiving groove 33 is provided in the lower middle part of the first columnar part 31; The second needle body 70 includes an integrated thin rod portion 71 and a thick column head 72, the thick column head 72 being slidably nested in the receiving groove 33, and the first spring 80 being nested in the receiving groove 33. The diameter of the insulating disk 40 is the same as the diameter of the first through cavity 11. The insulating disk 40 is nested in the first through cavity 11. A transition hole 41 is provided in the middle of the insulating disk 40. The diameter of the transition hole 41 is smaller than the diameter of the thick column head 72. The thin rod part 71 slides through the transition hole 41.

[0022] The second housing 50 has a third through cavity 51 and a fourth through cavity 52 inside, and the diameter of the third through cavity 51 is larger than the diameter of the fourth through cavity 52. The second insulating base 60 includes an integrally formed third column 61 and a fourth column 62. The diameter of the third column 61 is the same as the diameter of the third through cavity 51, and the third column 61 is nested inside the third through cavity 51. The diameter of the fourth column 62 is the same as the diameter of the fourth through cavity 52, and the fourth column 62 penetrates through the fourth through cavity 52.

[0023] The second insulating base 60 has a positioning cavity 63 extending through its upper and lower ends in the middle, and the thin rod 71 is slidably nested in the positioning cavity 63.

[0024] The lower part of the insulating disk 40 is fixed with a first limiting ring 42, and the upper side of the third column 61 is fixed with a second limiting ring 64. The upper and lower ends of the second spring 90 are respectively sleeved on the first limiting ring 42 and the second limiting ring 64. The first limiting ring 42 and the second limiting ring 64 constrain the two ends of the second spring 90 to prevent it from shifting and deforming when compressed.

[0025] The upper outer side of the second housing 50 is provided with an external threaded part 53, which is threadedly nested in the threaded groove 13. The top of the second housing 50 abuts against the bottom edge of the insulating disk 40, making the connection between the second housing 50 and the first housing 10 simple and convenient, while effectively fixing the insulating disk 40.

[0026] In this utility model, during assembly, the first needle body 30 is first inserted into the first insulating seat 20 until the first cylindrical part 31 of the first needle body 30 is completely embedded in the first limiting cavity 23 of the first insulating seat 20, and the second cylindrical part 32 of the first needle body 30 naturally penetrates the second limiting cavity 24 of the first insulating seat 20. Then, the first insulating seat 20, which is equipped with the first needle body 30, is inserted into the first housing 10 to the limit position. The first column 21 of the first insulating seat 20 is interference-fitted with the first through cavity 11 of the first housing 10, and the second column 22 of the first insulating seat 20 is nested with the second through cavity 12 of the first housing 10 with zero clearance. The first spring 80 is placed into the receiving groove 33 of the first needle body 30, the coarse column head 72 of the second needle body 70 is inserted into the receiving groove 33, and then the insulating disc 40 is sleeved from the end of the thin rod part 71 of the second needle body 70 onto the thin rod part 71 and pushed into the first through cavity 11 of the first housing 10. The two-stage pillars of the second insulating seat 60 are aligned with the stepped cavity of the second housing 50 and pressed into the third pillar 61 of the second insulating seat 60 and the third through cavity 51 of the second housing 50 with interference fit. Then the second spring 90 is placed inside the second housing 50, and the thin rod portion 71 of the second needle body 70 is aligned with the positioning cavity 63 on the second insulating seat 60, so that the thin rod portion 71 slides into the positioning cavity 63. Then, align the external thread 53 on the second housing 50 with the threaded groove 13 of the first housing 10, rotate it to make it threadedly connected, and finally move the retaining plate 14 on the first housing 10 to make the retaining post 15 engage with the retaining groove 54, thus completing the overall assembly.

[0027] The overall assembly is simple and easy to disassemble. The spring and needle body can be replaced independently. When one part is damaged, the corresponding part can be disassembled and replaced without replacing the whole.

[0028] The second housing 50 is first threadedly connected to the first housing 10, and then the locking plate 14 on the first housing 10 is used to lock the locking post 15 on the locking plate 14 into the corresponding locking groove 54 on the second housing 50, thereby achieving double locking, solving the problem of thread loosening under high frequency vibration, and improving test stability.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A radio frequency test probe structure, characterized in that, include: A first housing (10) is nested inside the first housing (10), and a first insulating seat (20) is inserted through the first insulating seat (20). A first needle body (30) is inserted through the first insulating seat (20). The lower part of the first needle body (30) abuts against an insulating disc (40). A plurality of clamping plates (14) are hinged to the lower part of the outer side of the first housing (10). A clamping post (15) is provided on the inner side of the lower end of the clamping plate (14). The second housing (50) is threadedly connected to the first housing (10). A slot (54) is provided on the outer side of the second housing (50) corresponding to the position of the locking post (15). The locking post (15) is engaged with the slot (54). A second insulating seat (60) is nested inside the second housing (50). The lower part of the second insulating seat (60) slides through the second housing (50). A second needle body (70) is slidably nested inside the second insulating seat (60). The upper end of the second needle body (70) slides through the insulating disc (40) and extends into the first needle body (30). A first spring (80) is provided between the top of the second needle body (70) and the inner wall of the first needle body (30). A second spring (90) is provided between the second insulating seat (60) and the insulating disc (40).

2. The radio frequency test probe structure according to claim 1, characterized in that: The first housing (10) has a first through cavity (11) and a second through cavity (12) inside. The lower part of the first through cavity (11) has a threaded groove (13). The diameter of the first through cavity (11) is larger than the diameter of the second through cavity (12). The first insulating base (20) includes an integrally formed first column (21) and a second column (22). The diameter of the first column (21) is the same as the diameter of the first through cavity (11) and is nested in the first through cavity (11). The diameter of the second column (22) is the same as the diameter of the second through cavity (12) and is nested in the second through cavity (12).

3. The radio frequency test probe structure according to claim 2, characterized in that: The first column (21) has a first limiting cavity (23) in the lower middle part, and the second column (22) has a second limiting cavity (24) in the upper middle part. The inner cavity of the second limiting cavity (24) is connected to the first limiting cavity (23). The diameter of the first limiting cavity (23) is larger than the diameter of the second limiting cavity (24). The first needle body (30) includes an integrated first cylindrical part (31) and a second cylindrical part (32). The diameter of the first cylindrical part (31) is larger than that of the second cylindrical part (32). The height and diameter of the first cylindrical part (31) are the same as those of the first limiting cavity (23). The first cylindrical part (31) is nested in the first limiting cavity (23). The diameter of the second cylindrical part (32) is the same as that of the second limiting cavity (24). The second cylindrical part (32) penetrates the second limiting cavity (24).

4. The radio frequency test probe structure according to claim 3, characterized in that: A receiving groove (33) is provided in the lower middle part of the first columnar part (31); The second needle body (70) includes an integrated thin rod portion (71) and a thick column head (72), the thick column head (72) being slidably nested in a receiving groove (33), and the first spring (80) being nested in the receiving groove (33); The diameter of the insulating disk (40) is the same as the diameter of the first through cavity (11). The insulating disk (40) is nested in the first through cavity (11). A transition hole (41) is provided in the middle of the insulating disk (40). The diameter of the transition hole (41) is smaller than the diameter of the thick column head (72). The thin rod part (71) slides through the transition hole (41).

5. The radio frequency test probe structure according to claim 4, characterized in that: The second housing (50) has a third through cavity (51) and a fourth through cavity (52) inside, and the diameter of the third through cavity (51) is larger than the diameter of the fourth through cavity (52); The second insulating base (60) includes an integrally formed third column (61) and a fourth column (62). The diameter of the third column (61) is the same as the diameter of the third through cavity (51), and the third column (61) is nested in the third through cavity (51). The diameter of the fourth column (62) is the same as the diameter of the fourth through cavity (52), and the fourth column (62) penetrates the fourth through cavity (52).

6. The radio frequency test probe structure according to claim 5, characterized in that: The second insulating seat (60) has a positioning cavity (63) extending through its upper and lower ends in the middle, and the thin rod (71) is slidably nested in the positioning cavity (63).

7. The radio frequency test probe structure according to claim 6, characterized in that: The lower part of the insulating disk (40) is fixed with a first limiting ring (42), the upper side of the third column (61) is fixed with a second limiting ring (64), and the upper and lower ends of the second spring (90) are respectively sleeved on the first limiting ring (42) and the second limiting ring (64).

8. The radio frequency test probe structure according to claim 5, characterized in that: The upper outer side of the second housing (50) is provided with an external thread (53), which is threadedly nested in the threaded groove (13). The top of the second housing (50) abuts against the bottom edge of the insulating disk (40).

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