Pluggable shielding clamp cap
By designing pluggable shielded fixture caps, the problems of unstable connections of probe rods and noise interference are solved, and the convenient pluggable probe rods and efficient anti-noise interference are achieved, which improves the stability and flexibility of hardware testing.
Patent Information
- Application Number
- CN202420367529.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-02-27
AI Technical Summary
During hardware testing, long-term hand-held probes are prone to unstable connection due to hand shaking. Although disassembly of welding wire in the prior art avoids hand shaking problems, it takes a long time to restore, is easy to lose, is costly, and is sensitive to noise. The signal is insufficiently shielded and easily introduces interference.
A pluggable shielding clamp cap is designed, including a metal shell, an insulator and a conductive connection. The probe rod can be inserted into the metal shell. The conductive connection member is connected to the probe rod detection needle. The two wires are arranged coaxially to weld to Test points to ensure the reliability and anti-interference of long-term connections.
It realizes convenient plug-in and unplugging of probe rods, ensuring the reliability and noise-resistant interference of long-term testing, and is simple, flexible, low-cost and more reliable.
Smart Images
Figure CN222365021U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hardware testing, and in particular relates to a pluggable shielding fixture cap for a probe. Background Art
[0002] In the actual hardware testing process, it is often necessary to connect and test a single test signal point for a long time, and a large part of these test signals are noise-sensitive signals. In order to avoid the problem of unstable connection caused by hand shaking when holding the probe for a long time, the common practice is to directly disassemble the probe, wrap two wires around the probe, and then weld them to the corresponding test point, so as to avoid the problem of long-term holding. However, if the probe is disassembled, it is necessary to restore the probe when it is needed for other purposes. Repeated production is time-consuming, and the disassembled accessories are easy to lose. In addition, the distance between the probe and the ground is large, and the wires used for production are all soft wires that are easy to be pulled apart. The shielding is not good enough, especially for noise-sensitive test signals, which are easy to introduce interference. In order to avoid noise interference, the prior art often uses a special ripple probe with a shielded wire of an SMA interface to weld it to the corresponding test point for testing. The ripple probe itself is expensive and requires additional matching adapter wires (which are consumables with a higher unit price). Due to cost issues, the number of ripple probes equipped in a single laboratory is relatively small. Utility Model Content
[0003] In view of the above-mentioned technical problems existing in the prior art, an embodiment of the utility model provides a pluggable shielding clamp cap to ensure the reliability and anti-interference of the connection during long-term testing.
[0004] The technical solution adopted in the embodiment of the utility model is: a pluggable shielding clamp cap, used on a probe, the pluggable shielding clamp cap comprising:
[0005] A metal shell with two open ends, wherein the probe can be inserted and removed from the metal shell through the first open end of the metal shell;
[0006] an insulator, which is disposed in the metal shell from the second open end of the metal shell;
[0007] A conductive connector, which is disposed on the insulator, wherein a first end of the conductive connector is used to connect to a detection needle portion of the probe extending into the metal shell;
[0008] A first wire body, a first end of which is connected to the second end of the conductive connecting member, and the second end of the first wire body is used for welding on a test point;
[0009] A second wire body has a first end connected to the metal shell, a second end of the second wire body is used for welding on a reference ground close to the test point, and the second wire body is coaxially arranged with the first wire body.
[0010] In an optional embodiment, the conductive connector includes a hollow tube, the detection needle portion of the probe rod is detachably inserted into the first end of the hollow tube, and the first end of the first wire body is fixedly inserted into the second end of the hollow tube.
[0011] In an optional embodiment, the insulator is provided with a through hole passing through two opposite ends thereof, the hollow tube is fixed in the through hole, and the second end of the hollow tube extends out of the through hole and is exposed outside the insulator.
[0012] In an optional embodiment, the metal shell is in the shape of a hollow cylinder; the insulator is in the shape of a cylinder, the insulator is fixed in the second open end of the metal shell and is coaxial with the metal shell; the conductive connector is disposed through the axis of the insulator.
[0013] In an optional embodiment, a plurality of cutting slits are provided on the outer wall of the first open end of the metal shell along its circumference.
[0014] In an optional embodiment, an end surface of the second open end of the metal shell extends along the axial direction of the metal shell to form a connecting pin, and the first end of the second wire body is connected to the connecting pin.
[0015] In an optional embodiment, four connecting pins are evenly arranged on the end surface of the second open end of the metal shell, and the first end of the second wire body is welded to one of the connecting pins.
[0016] In an optional embodiment, a dimension of the connecting pin in the axial direction of the metal shell is smaller than a distance between the connecting pin and the conductive connecting member.
[0017] In an optional embodiment, the second wire body is in the shape of a sleeve, the first wire body is passed through the second wire body along the axis of the second wire body, and is insulated from the second wire body; the outer wall of the first end of the second wire body extends outward to form a foot, and the foot is welded to one of the connecting pins.
[0018] In an optional embodiment, the insulator is made of insulating plastic.
[0019] Compared with the prior art, the beneficial effect of the embodiment of the utility model is that the utility model makes a pluggable shielding clamp cap for commonly used probes that is as convenient as the original probe hook, and the pluggable shielding clamp cap is welded to the test point through a coaxial line, while ensuring the reliability and anti-interference of long-term connection. In addition, the utility model can be flexibly replaced according to the usage scenario, has low cost and more reliable structure.
[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to restrict the present invention.
[0021] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a pluggable shielding clamp cap according to an embodiment of the utility model.
[0024] Figure 2 for Figure 1 Exploded diagram of .
[0025] Figure 3 for Figure 1 A cross-sectional view of the local structure.
[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a pluggable shielding clamp cap according to another embodiment of the utility model.
[0027] Figure 5 for Figure 4 Exploded diagram of .
[0028] Figure 6 for Figure 4 sectional view of .
[0029] Reference numerals:
[0030] 1-metal shell 1; 11-connecting pin; 12-cutting seam; 2-insulator; 3-conductive connecting piece; 4-first wire body; 5-second wire body; 51-turning pin. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0033] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.
[0034] The utility model embodiment provides a pluggable shielding clamp cap for use on a probe. Figures 1 to 6 As shown, the pluggable shielding clamp cap includes a metal shell 1, an insulator 2, a conductive connector 3, a first wire body 4 and a second wire body 5. The metal shell 1 is a hollow structure with two open ends. The probe (not shown in the figure) can be pluggably arranged in the metal shell 1 through the first open end of the metal shell 1, that is, the metal shell 1 is pluggably sleeved on the probe through its first open end. The insulator 2 is arranged in the metal shell 1 through the second open end of the metal shell 1. The conductive connector 3 is arranged on the insulator 2, and is used to electrically connect the probe and the first wire body 4. Specifically, the first end of the conductive connector 3 is used to connect with the detection needle of the probe extending into the metal shell 1, and the second end of the conductive connector 3 is connected to the first end of the first wire body 4, and the second end of the first wire body 4 is used to be welded on the test point. The first end of the second wire body 5 is connected to the metal shell 1, and the second end of the second wire body 5 is used to be welded on the reference ground close to the test point, and the second wire body 5 and the first wire body 4 are coaxially arranged or twisted pair arranged. The first wire 4 serves as a positive wire, and the second wire 5 serves as a negative wire.
[0035] The pluggable shielding clamp cap of the embodiment of the utility model can be connected to the probe in a plug-in manner, and the first wire body 4 electrically connected to the probe is welded to the test point to ensure the reliability of the connection with the test point during long-term testing. At the same time, the two wire bodies are coaxially arranged or twisted in pairs to improve the anti-noise interference. The utility model has a simple structure, flexible use, low cost, and a more reliable structure.
[0036] The probe may be, but is not limited to, the most commonly used 3.5 mm probe.
[0037] In some embodiments, Figure 3 and Figure 6 As shown, the conductive connector 3 includes a hollow tube. When the probe is inserted into the metal housing 1, the detection needle of the probe is detachably inserted into the first end of the hollow tube, and the first end of the first wire body 4 is fixedly inserted into the second end of the hollow tube. The conductive connector 3 is designed to be a hollow tube, which facilitates the connection of the detection needle of the probe and the first end of the first wire body 4 to the conductive connector 3, and the connection stability is strong.
[0038] In some embodiments, a through hole penetrating through the opposite ends of the insulator 2 may be provided in the insulator 2, the outer diameter of the hollow tube matches the aperture of the through hole, and the hollow tube is fixed in the through hole, and the second end of the hollow tube extends out of the through hole and is exposed outside the insulator 2. In this way, the installation of the hollow tube on the insulator 2 is facilitated, and the connection between the first wire body 4 and the hollow tube is also facilitated.
[0039] It is understandable that the shapes of the metal shell 1 and the insulator 2 are not limited, as long as the probe needle of the probe is coaxially arranged with the hollow tube when the probe is inserted into the metal shell 1. Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the metal shell 1 is a hollow cylinder; the insulator 2 is a cylinder, the insulator 2 is fixed in the second open end of the metal shell 1, and is coaxial with the metal shell 1; the conductive connector 3 is passed through the axis of the insulator 2. The structure is simple, the processing and manufacturing are convenient, and it is conducive to the coaxiality of the conductive connector 3 and the detection needle of the probe.
[0040] In some embodiments, Figures 1 to 6 As shown, a plurality of cutting slits 12 are provided along the circumference of the outer wall of the first open end of the metal shell 1. By providing the cutting slits 12, the metal shell 1 can be deformed to facilitate plug-in connection with the probe.
[0041] In some embodiments, the combination Figures 1 to 6The end surface of the second open end of the metal shell 1 extends along the axial direction of the metal shell 1 to form a connecting pin 11, and the first end of the second wire body 5 is connected to the connecting pin 11. By providing the connecting pin 11, it is convenient to connect the second wire body 5 to the metal shell 1.
[0042] Optionally, four connecting pins 11 are evenly arranged on the end surface of the second open end of the metal shell 1, and the first end of the second wire body 5 is welded to one of the connecting pins 11. By providing four connecting pins 11, when a heat shrink tube is subsequently installed outside the metal shell 1, the force is evenly applied to avoid bending.
[0043] Optionally, the dimension of the connecting pin 11 in the axial direction of the metal shell 1 is smaller than the distance between the connecting pin and the conductive connector 3. Setting the connecting pin 11 shorter can reduce unnecessary bending, while if the connecting pin 11 is designed to be too long, it is possible that uncontrolled inward bending may occur due to external force. Moreover, the dimension of the connecting pin 11 is designed to be within the above range, so that when the connecting pin 11 bends inward under the action of external force and bends 90 degrees, it will not contact the conductive connector 3, avoiding a short circuit with the first wire body 4 connected to the conductive connector 3, thereby improving the safety of use.
[0044] like Figure 1 and Figure 2 As shown, the first wire body 4 and the second wire body 5 are coiled to form a twisted pair of wires similar to a braid, so that the two are combined more tightly, which is conducive to the subsequent wrapping of insulating sheaths outside the two wires.
[0045] like Figures 4 to 6 As shown, the first wire body 4 and the second wire body 5 are coaxially arranged, the second wire body 5 is in the shape of a sleeve, the first wire body 4 is passed through the second wire body 5 along the axis of the second wire body 5, and is insulated from the second wire body 5; the outer wall of the first end of the second wire body 5 extends outward (toward the connecting pin 11) to form a crooked foot 51, and the crooked foot 51 is welded to one of the connecting pins 11.
[0046] The present invention does not specifically limit the material of the insulator 2 , as long as it can achieve insulation between the metal shell 1 and the conductive connector 3 , for example, the material of the insulator 2 is insulating plastic.
[0047] When in use, first find the test point of the hardware, weld the second end of the first wire body 4 (positive wire) of the above-mentioned pluggable shielding clamp cap to the test point, and weld the second end of the second wire body 5 (negative wire) to the reference ground closest to the test point; then unplug the original ground wire clamp and probe hook of the probe; finally, insert the end of the probe with the detection needle into the pluggable shielding clamp cap from the first open end of the metal shell 1, and then start the test; after the test, unplug the probe from the pluggable shielding clamp cap, and remove the two wires from the test point, and weld them to the test points of other hardware as needed. By connecting the pluggable shielding clamp cap to the probe, the stability of the connection for long-term testing of hardware using the probe can be improved, as well as the anti-noise interference performance in situations where the noise requirements are relatively high.
[0048] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.
Claims
1. A pluggable shielding clamp cap, used on a probe, characterized in that: include: A metal shell with two open ends, wherein the probe can be inserted and removed from the metal shell through the first open end of the metal shell; an insulator, which is disposed in the metal shell from the second open end of the metal shell; A conductive connector, which is disposed on the insulator, wherein a first end of the conductive connector is used to connect to a detection needle portion of the probe extending into the metal shell; A first wire body, a first end of which is connected to the second end of the conductive connecting member, and the second end of the first wire body is used for welding on a test point; A second wire body, a first end of which is connected to the metal shell, a second end of which is used for welding on a reference ground close to the test point, and the second wire body and the first wire body are coaxially arranged or twisted pair arranged.
2. The pluggable shielding clamp cap according to claim 1, characterized in that: The conductive connecting member comprises a hollow tube, the detection needle portion of the probe rod is detachably inserted into the first end of the hollow tube, and the first end of the first wire body is fixedly inserted into the second end of the hollow tube.
3. The pluggable shielding clamp cap according to claim 2, characterized in that: The insulator is provided with through holes penetrating through two opposite ends thereof, the hollow tube is fixed in the through hole, and the second end of the hollow tube extends out of the through hole and is exposed outside the insulator.
4. The pluggable shielding clamp cap according to claim 1, characterized in that: The metal shell is in the shape of a hollow cylinder; the insulator is in the shape of a cylinder, the insulator is fixed in the second open end of the metal shell and is coaxial with the metal shell; the conductive connecting piece is passed through the axis of the insulator.
5. The pluggable shielding fixture cap according to claim 1, characterized in that: A plurality of cutting slits are arranged on the outer wall of the first open end of the metal shell along its circumference.
6. The pluggable shielding fixture cap according to claim 1, characterized in that: The end surface of the second open end of the metal shell extends along the axial direction of the metal shell to form a connecting pin, and the first end of the second wire body is connected to the connecting pin.
7. The pluggable shielding fixture cap according to claim 6, characterized in that: Four connecting pins are evenly arranged on the end surface of the second open end of the metal shell, and the first end of the second wire body is welded to one of the connecting pins.
8. The pluggable shielding clamp cap according to claim 6 or 7, characterized in that: A dimension of the connecting pin in the axial direction of the metal shell is smaller than a distance between the connecting pin and the conductive connecting member.
9. The pluggable shielding fixture cap according to claim 7, characterized in that: The second wire body is in the shape of a sleeve, the first wire body is passed through the second wire body along the axis of the second wire body, and is insulated from the second wire body; the outer wall of the first end of the second wire body extends outward to form a foot, and the foot is welded to one of the connecting pins.
10. The pluggable shielding clamp cap according to claim 1, characterized in that: The insulator is made of insulating plastic.