Self-adaptive constant force spring type probe structure

Abstract

The invention relates to the technical field of probes, and discloses a self-adaptive constant-force spring type probe structure which comprises a needle cylinder, a limiting cylinder is fixedly connected to the inner surface of the circumference of the needle cylinder, a lower ring piece is fixedly connected to the inner bottom wall of the needle cylinder, and the lower ring piece is fixedly connected with an upper ring piece through a vertical strip arranged on the upper surface of the lower ring piece; the shaft needle is slidably connected to the inner surface of the circumference of the limiting cylinder, the bottom end of the shaft needle penetrates through the needle cylinder and is fixedly connected with a probe, the outer surface of the circumference of the shaft needle is rotatably connected with a guide rod, an upper pushing ring is placed on the upper surface of the upper ring piece, and a lower pushing ring is placed on the upper surface of the lower ring piece. A rotating ring is rotationally connected to the inner surface of the circumference of the needle cylinder. The probe structure can effectively solve the problems that in the prior art, compression stress is conducted on the spring many times, the spring deforms, the pressure provided by the deformed spring on the probe is reduced, and stable contact between the probe and a measured object is affected.

Description

Technical Field

[0001] The present invention relates to the field of probe technology, and in particular to an adaptive constant-force spring-type probe structure. Background Art

[0002] A spring probe is an electrical connector mechanism that is widely used in modern electronic applications and the electronic testing industry. When the probe contacts the surface of the object being measured, the spring is compressed, and a circuit is formed after the probe contacts the surface of the object being measured. By measuring parameters such as resistance and current, the morphology and characteristics of the surface of the object being measured can be obtained.

[0003] Currently, when using a spring probe to perform connection testing on an object, the spring itself is prone to metal fatigue and deformation due to repeated compression and stress on the spring. When the probe compresses the deformed spring again, the pressure provided by the deformed spring to the probe is reduced, thereby affecting the stable contact between the probe and the object being tested. Summary of the Invention

[0004] Technical problems solved In response to the above-mentioned shortcomings of the prior art, the present invention provides an adaptive constant-force spring probe structure, which can effectively solve the problem in the prior art that the spring is compressed and stressed multiple times, the spring itself is deformed, and the pressure provided by the deformed spring to the probe is reduced, affecting the stable contact between the probe and the object being measured. Technical Solution

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an adaptive constant-force spring probe structure, comprising: A needle cylinder, wherein a limiting cylinder is fixedly connected to the inner circumferential surface of the needle cylinder, a lower ring piece is fixedly connected to the inner bottom wall of the needle cylinder, and the lower ring piece is fixedly connected to the upper ring piece via a vertical bar provided on its upper surface; An axial needle is slidably connected to the inner circumferential surface of the limiting cylinder, the bottom end of the axial needle passes through the syringe and is fixedly connected to the probe, a guide rod is rotatably connected to the outer circumferential surface of the axial needle, an upper push ring is placed on the upper surface of the upper ring piece, a lower push ring is placed on the upper surface of the lower ring piece, a swivel is rotatably connected to the inner circumferential surface of the syringe, and a compression spring is fixedly connected between the upper push ring and the lower push ring; In which, during the upward movement of the axial needle along the axial direction of the syringe, the axial needle pushes the bottom end of the compression spring upward by pushing the lower ring to compress the compression spring. In the process of the axial needle moving downward and then upward again, the axial needle pushes the top end of the compression spring upward by pushing the upper ring to stretch the compression spring.

[0006] Furthermore, the top end of the shaft needle is fixedly connected to a conductor, and the inner top wall of the needle cylinder is fixedly connected to a conductive cylinder that is compatible with the conductor.

[0007] Furthermore, a spiral slide rail is fixedly connected to the inner circumferential surface of the limiting cylinder, and the shaft pin is slidably connected to the spiral slide rail through a guide rod.

[0008] Furthermore, the rotating ring is fixedly connected to the upper rotating ring by a connecting rod set on its upper surface, and the rotating ring is fixedly connected to the lower rotating ring by a connecting rod set on its lower surface. A U-shaped upper plug-in is fixedly connected to the circumferential inner surface of the upper rotating ring, and four U-shaped upper plug-ins are provided and distributed in a circular array on the inner surface of the upper rotating ring. A U-shaped lower plug-in is fixedly connected to the circumferential inner surface of the lower rotating ring, and four U-shaped lower plug-ins are provided and distributed in a circular array on the inner surface of the lower rotating ring.

[0009] Furthermore, a rotating upper rod is rotatably connected to the outer circumferential surface of the shaft pin, an upper inner ring is fixedly connected to the inner circumferential surface of the push upper ring, two upper inner rings are provided and are symmetrical with the shaft pin as the center, and a V-shaped bar 1 is fixedly connected between the two upper inner rings; The bottom of the upper inner ring is slidably connected to an upper telescopic strip, and an upper telescopic spring is fixedly connected between the upper telescopic strip and the upper inner ring; Wherein, upper protrusions are fixedly connected to both sides of the push upper ring, and the upper protrusions are slidably sleeved on the outer surface of the vertical bar, and the upper protrusions are located between the U-shaped upper plug-in and the upper ring piece.

[0010] Furthermore, a rotating lower rod is rotatably connected to the outer circumferential surface of the shaft pin, and a lower inner ring is fixedly connected to the inner circumferential surface of the push lower ring. Two lower inner rings are provided and are symmetrical with the shaft pin as the center, and a V-shaped bar 2 is fixedly connected between the two lower inner rings. The bottom of the lower inner ring is slidably connected to a lower telescopic strip, and a lower telescopic spring is fixedly connected between the lower telescopic strip and the lower inner ring; Wherein, lower protrusions are fixedly connected to both sides of the push lower ring, and the lower protrusions are slidably sleeved on the outer surface of the vertical bar.

[0011] Furthermore, the bottom of the upper inner ring is tilted away from the side of the upper telescopic strip, and the bottom of the lower inner ring is tilted away from the side of the lower telescopic strip. Beneficial effects

[0012] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a push lower ring and a push upper ring. During the first upward sliding of the axial needle along the axial direction of the limiting cylinder, the axial needle drives the push lower ring upward through the two rotating lower rods, and the push lower ring drives the bottom end of the compression spring upward. Under the compression action of the compression spring, the compression spring provides a constant pressure to the axial needle and the probe, so that the probe and the object to be measured maintain a stable contact. During the second upward sliding of the axial needle along the axial direction of the limiting cylinder, the axial needle drives the push upper ring upward through the two rotating upper rods, and the push upper ring drives the top end of the compression spring upward. Under the tension action of the compression spring, the compression spring provides a constant pressure to the axial needle and the probe, so that the probe and the object to be measured maintain a stable contact. By alternately compressing and stretching the compression spring, the metal fatigue of the compression spring is reduced, so that the compression spring provides a constant pressure to the axial needle and the probe, so that the probe and the object to be measured maintain a stable contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0014] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the conductor according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a spiral slide rail according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of an axis pin according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the upper ring pusher according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of the lower ring piece according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a U-shaped upper plug-in according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of a V-shaped bar 2 according to an embodiment of the present invention; Figure 9 This is a schematic structural diagram of the lower telescopic bar according to an embodiment of the present invention; Figure 10 Schematic diagram of the structure of the inner ring in an embodiment of the present invention.

[0015] The numbers in the figure represent: 1. Needle cylinder; 11. Limit cylinder; 12. Lower ring piece; 13. Vertical bar; 14. Upper ring piece; 2. Axis needle; 21. Probe; 211. Conductor; 212. Conductive tube; 22. Guide rod; 221. Spiral slide rail; 23. Push the upper ring; 231. Rotate the upper rod; 2311. Upper inner ring; 23111. Upper telescopic bar; 23112. Upper telescopic spring; 2312. V-shaped bar 1; 232. Upper bump; 24. Push the lower ring; 241. Rotate the lower rod; 2411. Lower inner ring; 24111. Lower telescopic bar; 24112. Lower telescopic spring; 2412. V-shaped bar 2; 242. Lower protrusion; 25, swivel; 251, upper swivel; 2511, U-shaped upper insert; 252, lower swivel; 2521, U-shaped lower insert; 26. Compression spring. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] The present invention will be further described below with reference to the embodiments. Example

[0018] See also Figures 1-10 The present invention provides a technical solution: an adaptive constant force spring probe structure, comprising: The needle cylinder 1 has a limit cylinder 11 fixedly connected to the inner circumferential surface of the needle cylinder 1, and a lower ring piece 12 fixedly connected to the inner bottom wall of the needle cylinder 1. The lower ring piece 12 is fixedly connected to the upper ring piece 14 through a vertical bar 13 provided on its upper surface; Axis needle 2 is slidably connected to the inner surface of the circumference of the limiting cylinder 11, the bottom end of the axis needle 2 passes through the syringe 1 and is fixedly connected to the probe 21, the outer surface of the circumference of the axis needle 2 is rotatably connected to the guide rod 22, the upper surface of the upper ring piece 14 is placed on the upper surface of the push ring 23, the upper surface of the lower ring piece 12 is placed on the upper surface of the push ring 24, the inner surface of the circumference of the syringe 1 is rotatably connected to a swivel 25, and a compression spring 26 is fixedly connected between the push ring 23 and the push ring 24; In the process of the axial needle 2 moving upward along the axial direction of the syringe 1, the axial needle 2 pushes the bottom end of the compression spring 26 upward by pushing the lower ring 24 to compress the compression spring 26. In the process of the axial needle 2 moving downward and then upward again, the axial needle 2 pushes the top end of the compression spring 26 upward by pushing the upper ring 23 to stretch the compression spring 26.

[0019] The top end of the shaft needle 2 is fixedly connected to a conductor 211 , and the inner top wall of the needle cylinder 1 is fixedly connected to a conductive cylinder 212 that matches the conductor 211 .

[0020] A spiral slide rail 221 is fixedly connected to the inner circumferential surface of the limiting cylinder 11 , and the pintle 2 is slidably connected to the spiral slide rail 221 via a guide rod 22 .

[0021] The rotating ring 25 is fixedly connected to the upper rotating ring 251 through a connecting rod set on its upper surface, and the rotating ring 25 is fixedly connected to the lower rotating ring 252 through a connecting rod set on its lower surface. A U-shaped upper plug-in 2511 is fixedly connected to the circumferential inner surface of the upper rotating ring 251, and four U-shaped upper plug-ins 2511 are provided and distributed in a circular array on the inner surface of the upper rotating ring 251. A U-shaped lower plug-in 2521 is fixedly connected to the circumferential inner surface of the lower rotating ring 252, and four U-shaped lower plug-ins 2521 are provided and distributed in a circular array on the inner surface of the lower rotating ring 252.

[0022] A rotating upper rod 231 is rotatably connected to the outer circumferential surface of the shaft pin 2, and an upper inner ring 2311 is fixedly connected to the inner circumferential surface of the push ring 23. Two upper inner rings 2311 are provided and are symmetrical with the shaft pin 2 as the center. A V-shaped bar 2312 is fixedly connected between the two upper inner rings 2311; The bottom of the upper inner ring 2311 is slidably connected to an upper telescopic strip 23111, and an upper telescopic spring 23112 is fixedly connected between the upper telescopic strip 23111 and the upper inner ring 2311. The upper protrusions 232 are fixedly connected to both sides of the upper push ring 23 . The upper protrusions 232 are slidably sleeved on the outer surface of the vertical bar 13 . The upper protrusions 232 are located between the U-shaped upper plug-in 2511 and the upper ring piece 14 .

[0023] A rotating lower rod 241 is rotatably connected to the outer circumferential surface of the shaft pin 2, and a lower inner ring 2411 is fixedly connected to the inner circumferential surface of the push lower ring 24. Two lower inner rings 2411 are provided and are symmetrical with the shaft pin 2 as the center. A V-shaped bar 2412 is fixedly connected between the two lower inner rings 2411. The bottom of the lower inner ring 2411 is slidably connected to a lower telescopic strip 24111, and a lower telescopic spring 24112 is fixedly connected between the lower telescopic strip 24111 and the lower inner ring 2411. The two sides of the push lower ring 24 are fixedly connected with lower protrusions 242 , and the lower protrusions 242 are slidably sleeved on the outer surface of the vertical bar 13 .

[0024] The bottom of the upper inner ring 2311 is tilted away from the upper telescopic bar 23111 , and the bottom of the lower inner ring 2411 is tilted away from the lower telescopic bar 24111 .

[0025] Compression process: In actual application, the needle cylinder 1 is controlled to drive the internal pin 2 to approach the object to be measured, so that the pin 2 contacts the object to be measured through the probe 21 at its bottom. Under the resistance of the object to be measured, the object to be measured drives the pin 2 to move upward along the axial direction of the limit cylinder 11 through the probe 21, and the pin 2 drives the guide rods 22 on both sides to slide upward along the spiral slide 221. Under the limiting action of the spiral slide 221, the pin 2 rotates around its own axis during the upward movement of the pin 2. The shaft pin 2 drives the rotating upper rod 231 and the rotating lower rod 241 on both sides to move upward in a synchronous spiral manner. The rotating upper rod 231 moves upward along the inner side of the V-shaped bar 1 2312. Under the resistance of the lower telescopic bar 24111, the two rotating lower rods 241 push the two lower inner rings 2411 to move upward through the two lower telescopic bars 24111, and the two rotating lower rods 241 rotate around the axis of the pushing lower ring 24 along the lower surfaces of the two lower inner rings 2411. The two lower inner rings 2411 drive the pushing ring 24 and the lower protrusion 242 to slide upward along the vertical bar 13, pushing the lower ring 24 to drive the bottom end of the compression spring 26 to move upward. Under the limiting action of the U-shaped upper plug-in 2511, the U-shaped upper plug-in 2511 limits and fixes the pushing ring 23 through the upper protrusion 232 (thereby limiting and fixing the top end of the compression spring 26) until the shaft needle 2 drives the conductor 211 at its top to move upward and fit tightly with the conductive tube 212 (completing the electrical connection between the conductor 211 and the conductive tube 212). At this time, the shaft needle 2 drives the two guide rods 22 to be located at the top of the spiral slide rail 221, the two rotating upper rods 231 are located at the angle between the two V-shaped bars 2312, and the two rotating lower rods 241 are located at the center of the two lower inner rings 2411. Under the compression action of the compression spring 26, the compression spring 26 provides constant pressure on the shaft needle 2 and the probe 21, so that the probe 21 maintains stable contact with the object to be measured.

[0026] After the measurement is completed, the probe 21 is separated from the object to be measured by controlling the syringe 1 to release the resistance of the object to be measured to the probe 21. Under the compression of the compression spring 26, the compression spring 26 pushes the lower ring 24 and the lower protrusion 242 to slide downward along the vertical bar 13, pushing the lower ring 24 to drive the two lower inner rings 2411 to move downward. The two lower inner rings 2411 push the shaft needle 2 to slide downward along the axial direction of the limiting cylinder 11 through the two rotating lower rods 241. The shaft needle 2 drives the two guide rods 22 to slide downward along the spiral slide rail 221. Under the limiting action of the spiral slide rail 221, the shaft needle 2 drives the rotating upper rod 231 and the rotating lower rod 241 on both sides thereof to spirally move. The two rotating upper rods 231 move downward along the inner side of the V-shaped bar 1 2312 and the upper telescopic bar 23111. The two rotating lower rods 241 rotate along the lower surface of the lower inner ring 2411 around the axis of the lower ring 24. The two rotating upper rods 231 push the upper telescopic bar 23111 to slide inside the upper inner ring 2311 through the inclined surface of the upper telescopic bar 23111 until the two rotating upper rods 231 move to the bottom of the upper inner ring 2311. The upper telescopic spring 23112 pushes the upper telescopic bar 23111 to reset. At this time, the two rotating lower rods 241 are located on the inner side of the V-shaped bar 2412, and the two guide rods 22 are located at the bottom end of the spiral slide rail 221 again.

[0027] Stretching process: In actual application, by controlling the rotating ring 25 to drive the upper rotating ring 251 and the lower rotating ring 252 to rotate around the axis of the syringe 1, the upper rotating ring 251 drives the U-shaped upper plug-in 2511 on its inner surface to rotate a certain angle, so that after the four U-shaped upper plug-ins 2511 rotate a certain angle, the limit of the U-shaped upper plug-in 2511 on the upper protrusion 232 is released (thereby releasing the limit fixation of the upper push ring 23 and the top of the compression spring 26), and the lower rotating ring 252 drives the U-shaped lower plug-in 2521 on its inner surface to rotate a certain angle, so that after the four U-shaped lower plug-ins 2521 rotate a certain angle, the two lower protrusions 242 are located between the U-shaped lower plug-in 2521 and the lower ring piece 12, thereby limiting and fixing the lower protrusion 242 and the push lower ring 24 (that is, limiting and fixing the bottom end of the compression spring 26).

[0028] When the probe 21 is driven to contact the object to be measured again, the axial needle 2 drives the two rotating upper rods 231 and the two rotating lower rods 241 to move upward in a synchronous spiral manner. The two rotating lower rods 241 move upward along the inner side of the V-shaped bar 2412, and the two rotating upper rods 231 push the upper ring 23 and the upper protrusion 232 to slide upward along the vertical bar 13 through the upper inner ring 2311, pushing the upper ring 23 to drive the top end of the compression spring 26 to move upward. Under the limiting action of the U-shaped lower plug-in 2521, the bottom end of the compression spring 26 is fixed until the axial needle 2 drives the guide at its top The electrical body 211 moves upward and fits tightly with the conductive tube 212 again (completing the electrical connection between the electrical body 211 and the conductive tube 212). At this time, the axial needle 2 drives the two guide rods 22 to be located at the top of the spiral slide rail 221 again, the two rotating lower rods 241 are located at the angle between the two V-shaped bars 2412, and the two rotating upper rods 231 are located at the center of the two upper inner rings 2311. Under the tensile action of the compression spring 26, the compression spring 26 provides a constant pressure on the axial needle 2 and the probe 21, so that the probe 21 maintains stable contact with the object to be measured.

[0029] In summary, in the process of using the probe structure to perform connection testing on an object, the metal fatigue of the compression spring 26 is reduced by alternately subjecting the compression spring 26 to compression and tension forces, so that the compression spring 26 provides a constant pressure to the axial needle 2 and the probe 21, so that the probe 21 maintains stable contact with the object being measured.

[0030] In summary, the present application has the following advantages by adopting the push upper ring 23 and the push lower ring 24: Advantage 1: When the axial needle 2 first slides upward along the axial direction of the limit cylinder 11, the axial needle 2 drives the lower ring 24 to compress the compression spring 26 by rotating the lower rod 241. When the axial needle 2 slides upward along the axial direction of the limit cylinder 11 again, the axial needle 2 drives the upper ring 23 to stretch the compression spring 26 by rotating the upper rod 231. By alternately compressing and stretching the compression spring 26, the metal fatigue of the compression spring 26 is reduced, so that the compression spring 26 provides a constant pressure to the axial needle 2 and the probe 21, so that the probe 21 maintains stable contact with the object being measured.

[0031] Advantage 2: The axial needle 2 pushes the lower ring 24 to move upward by rotating the lower rod 241 (in the process of compressing the compression spring 26), and with the help of the V-shaped bar 2312, the obstruction of the upper ring 23 on the rotation of the upper rod 231 is released. The axial needle 2 pushes the upper ring 23 to move upward by rotating the upper rod 231 (in the process of stretching the compression spring 26), and with the help of the V-shaped bar 2412, the obstruction of the lower ring 24 on the rotation of the lower rod 241 is released.

[0032] Advantage three, by setting the upper telescopic bar 23111 and the lower telescopic bar 24111, after the upper rod 231 is rotated and moves downward along the inner side of the V-shaped bar 1 2312, the upper rod 231 is rotated and abuts against the upper inner ring 2311 through the upper telescopic bar 23111, and after the lower rod 241 is rotated and moves downward along the inner side of the V-shaped bar 2412, the lower rod 241 is rotated and abuts against the lower inner ring 2411 through the lower telescopic bar 24111.

[0033] Advantage four: the bottom of the upper inner ring 2311 and the lower inner ring 2411 are set at an angle, so that the thrust direction of the upper inner ring 2311 and the lower inner ring 2411 on the pin 2 is offset from the vertical direction. When the pin 2 drives the guide rod 22 to slide along the spiral slide rail 221, the pin 2 always rotates in the same direction.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adaptive constant force spring probe structure, characterized in that: include: A needle cylinder (1), wherein a limiting cylinder (11) is fixedly connected to the inner circumferential surface of the needle cylinder (1), a lower ring piece (12) is fixedly connected to the inner bottom wall of the needle cylinder (1), and the lower ring piece (12) is fixedly connected to an upper ring piece (14) via a vertical bar (13) provided on its upper surface; An axial needle (2), wherein the axial needle (2) is slidably connected to the inner circumferential surface of the limiting cylinder (11), the bottom end of the axial needle (2) passes through the syringe (1) and is fixedly connected to the probe (21), the outer circumferential surface of the axial needle (2) is rotatably connected to the guide rod (22), the upper surface of the upper ring piece (14) is provided with an upper pushing ring (23), the upper surface of the lower ring piece (12) is provided with a lower pushing ring (24), the inner circumferential surface of the syringe (1) is rotatably connected to a rotating ring (25), and a compression spring (26) is fixedly connected between the upper pushing ring (23) and the lower pushing ring (24); In the process of the axial needle (2) moving upward along the axial direction of the needle cylinder (1), the axial needle (2) pushes the lower ring (24) to push the bottom end of the compression spring (26) to move upward to compress the compression spring (26), and in the process of the axial needle (2) moving downward and then moving upward again, the axial needle (2) pushes the top end of the compression spring (26) to move upward to stretch the compression spring (26).

2. The adaptive constant force spring probe structure according to claim 1, characterized in that: The top end of the axial needle (2) is fixedly connected to a conductor (211), and the inner top wall of the needle cylinder (1) is fixedly connected to a conductive cylinder (212) that matches the conductor (211).

3. The adaptive constant force spring probe structure according to claim 1, characterized in that: A spiral slide rail (221) is fixedly connected to the inner circumferential surface of the limiting cylinder (11), and the shaft pin (2) is slidably connected to the spiral slide rail (221) via a guide rod (22).

4. The adaptive constant force spring probe structure according to claim 1, characterized in that: The rotating ring (25) is fixedly connected to an upper rotating ring (251) via a connecting rod provided on its upper surface, and the rotating ring (25) is fixedly connected to a lower rotating ring (252) via a connecting rod provided on its lower surface. A U-shaped upper plug-in (2511) is fixedly connected to the circumferential inner surface of the upper rotating ring (251), and four U-shaped upper plug-ins (2511) are provided and distributed in a circumferential array on the inner surface of the upper rotating ring (251). A U-shaped lower plug-in (2521) is fixedly connected to the circumferential inner surface of the lower rotating ring (252), and four U-shaped lower plug-ins (2521) are provided and distributed in a circumferential array on the inner surface of the lower rotating ring (252).

5. The adaptive constant force spring probe structure according to claim 4, characterized in that: A rotating upper rod (231) is rotatably connected to the circumferential outer surface of the shaft needle (2), and an upper inner ring (2311) is fixedly connected to the circumferential inner surface of the pushing upper ring (23). Two upper inner rings (2311) are provided and are symmetrical with the shaft needle (2) as the center. A V-shaped bar (2312) is fixedly connected between the two upper inner rings (2311); The bottom of the upper inner ring (2311) is slidably connected to an upper telescopic strip (23111), and an upper telescopic spring (23112) is fixedly connected between the upper telescopic strip (23111) and the upper inner ring (2311); Wherein, upper protrusions (232) are fixedly connected to both sides of the pushing upper ring (23), and the upper protrusions (232) are slidably sleeved on the outer surface of the vertical bar (13), and the upper protrusions (232) are located between the U-shaped upper plug-in (2511) and the upper ring piece (14).

6. The adaptive constant force spring probe structure according to claim 5, characterized in that: A rotating lower rod (241) is rotatably connected to the circumferential outer surface of the shaft needle (2), and a lower inner ring (2411) is fixedly connected to the circumferential inner surface of the pushing lower ring (24). Two lower inner rings (2411) are provided and are symmetrical with the shaft needle (2) as the center, and a V-shaped bar 2 (2412) is fixedly connected between the two lower inner rings (2411); The bottom of the lower inner ring (2411) is slidably connected to a lower telescopic strip (24111), and a lower telescopic spring (24112) is fixedly connected between the lower telescopic strip (24111) and the lower inner ring (2411); Wherein, lower protrusions (242) are fixedly connected to both sides of the pushing lower ring (24), and the lower protrusions (242) are slidably sleeved on the outer surface of the vertical bar (13).

7. The adaptive constant force spring probe structure according to claim 6, characterized in that: The bottom of the upper inner ring (2311) is arranged at an angle on a side away from the upper telescopic strip (23111), and the bottom of the lower inner ring (2411) is arranged at an angle on a side away from the lower telescopic strip (24111).

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