Detachable meter pen

Abstract

The utility model provides a detachable meter pen, and relates to the technical field of meter pens, the detachable meter pen comprises a meter pen main body, the meter pen main body comprises a meter pen assembly, the meter pen assembly is connected with an outer sleeve, and the inner wall of the outer sleeve is connected with a meter pen needle structure in a penetrating manner; the meter pen needle structure comprises an inner sleeve inserted into the outer sleeve, a connecting rod is inserted into the inner wall of the inner sleeve, and one end of the connecting rod is fixedly connected with a meter pen needle main body; one end of the meter pen needle body extends out of the inner sleeve, a spring is arranged in the inner sleeve, and the two ends of the spring are connected with the connecting rod and the inner sleeve respectively. According to the utility model, through the arrangement of the meter pen needle structure, the outer sleeve and the meter pen needle structure are arranged in an inserted manner, so that detachable connection is realized, a user can conveniently disassemble the meter pen needle structure without complicated tools or operations, and the maintenance difficulty and time cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of test leads, and particularly to a detachable test lead. Background Art

[0002] In many fields such as electronic measurement, circuit debugging, and teaching experiments, the multimeter, as a basic electrical measurement tool, is of great importance. As a key component of the multimeter, the test lead is not only responsible for establishing a physical connection with the circuit under test, but also directly affects the transmission quality of the measurement signal and the accuracy of the measurement result. Therefore, the design and performance of the test lead have always been the focus of attention of engineers and researchers;

[0003] Traditional multimeter test leads usually adopt an integrated design, that is, the test lead needle is directly fixedly connected to the wire and cannot be disassembled separately. Although this design simplifies the manufacturing process to a certain extent, it also brings many inconveniences. Since the test lead needle often needs to contact various terminals, pins, etc. in the circuit under test, after long-term use, the connection between the test lead needle and the wire is prone to looseness or even breakage due to wear or external force impact, resulting in unstable or interrupted measurement signals and affecting the accuracy of the measurement result. When the test lead fails or needs to be repaired, due to the integrated design between the test lead needle and the wire, it is often necessary to send the entire test lead back to the original factory or a professional repair center for replacement or repair, which not only increases the repair cost but also prolongs the repair cycle, bringing inconvenience to users. Therefore, we make improvements and propose a detachable test lead. Summary of the Invention

[0004] The purpose of the utility model is to address the problem that the existing test leads usually adopt an integrated design, which is not convenient for replacement and repair.

[0005] To achieve the above-mentioned invention purpose, the utility model provides a detachable test lead to improve the above problems.

[0006] Specifically, this application is as follows:

[0007] A detachable test lead includes a test lead main body, the test lead main body includes a test lead assembly, the test lead assembly is connected with an outer sleeve, and a test lead needle structure is inserted and connected to the inner wall of the outer sleeve;

[0008] The test lead needle structure includes an inner sleeve inserted into the outer sleeve, a connecting rod is inserted into the inner wall of the inner sleeve, one end of the connecting rod is fixedly connected with a test lead needle main body; and one end of the test lead needle main body extends to the outside of the inner sleeve, a spring is arranged in the inner sleeve, and both ends of the spring are connected with the connecting rod and the inner sleeve respectively.

[0009] As a preferred technical solution of this application, the end of the inner sleeve away from the test lead needle main body is arc-shaped.

[0010] As a preferred technical solution of the present application, one end of the inner sleeve close to the pen tip body is provided with a reduced opening, and one end of the connecting rod close to the pen tip body is provided in a frustum shape.

[0011] As a preferred technical solution of the present application, the pen tip assembly includes a connecting seat connected to the end of the outer sleeve away from the pen tip body, and a pen tip wire is connected to the connecting seat.

[0012] As a preferred technical solution of the present application, an inner shell is sleeved between the outer surfaces of the outer sleeve, the connecting seat and the pen tip wire, and a protective shell is sleeved on the outer surface of the inner shell.

[0013] As a preferred technical solution of the present application, a protective mechanism is provided at one end of the protective shell close to the pen tip body, and the protective mechanism is used for protecting the pen tip body and assisting in fixing the protective shell during use.

[0014] As a preferred technical solution of the present application, the protective mechanism includes a first protective splint and a second protective splint clamped on both sides of the protective shell, and grooves are formed on the sides of the second protective splint and the first protective splint close to each other.

[0015] As a preferred technical solution of the present application, a sliding groove is formed in the second protective splint, a connecting plate is inserted into the sliding groove, one end of the connecting plate is fixedly connected to the first protective splint, a threaded groove is formed in the connecting plate, a threaded rod is threadedly connected to the threaded groove, and one end of the threaded rod away from the first protective splint passes through the second protective splint and is fixedly connected to a hand wheel.

[0016] As a preferred technical solution of the present application, a limiting groove is formed in the second protective splint, a limiting rod is inserted into the inner wall of the limiting groove, and one end of the limiting rod passes through the limiting groove and is fixedly connected to the first protective splint.

[0017] As a preferred technical solution of the present application, a clip is fixedly installed on the second protective splint, and the clip is adapted to the outer diameter of the protective shell.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In the solution of the present application:

[0020] In order to solve the problem that in the prior art, the pen tip is usually integrally designed, which is not convenient for replacement and maintenance, in the present application, through the provided pen tip structure, the outer sleeve and the pen tip structure are inserted and arranged to achieve detachable connection. Users can conveniently disassemble the pen tip structure without complex tools or operations, reducing the maintenance difficulty and time cost. Description of the Drawings

[0021] Figure 1 Structural schematic diagram of the detachable test lead provided by this application;

[0022] Figure 2 Exploded view of the detachable test lead provided by this application;

[0023] Figure 3 Structural schematic diagram of the inner sleeve tube of the detachable test lead provided by this application;

[0024] Figure 4 Structural schematic diagram of the outer sleeve tube of the detachable test lead provided by this application;

[0025] Figure 5 Cross-sectional structural schematic diagram of the inner sleeve tube of the detachable test lead provided by this application;

[0026] Figure 6 Structural schematic diagram of the protection mechanism of the detachable test lead provided by this application;

[0027] Figure 7 Cross-sectional structural schematic diagram of the second protection splint of the detachable test lead provided by this application;

[0028] Figure 8 Structural schematic diagram of the connection between the protection shell and the clip of the detachable test lead provided by this application.

[0029] Labels in the figure:

[0030] 1. Test lead main body; 101. Outer sleeve tube; 102. Inner sleeve tube; 103. Connecting rod; 104. Test lead needle main body; 105. Spring; 106. Connection seat; 107. Test lead wire; 108. Inner shell; 109. Protection shell;

[0031] 2. Protection mechanism; 201. First protection splint; 202. Second protection splint; 203. Groove; 204. Slide groove; 205. Connection plate; 206. Threaded rod; 207. Limit groove; 208. Limit rod; 209. Clip. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this utility model.

[0033] As described in the background art, traditional multimeter test leads usually adopt an integrated design, that is, the test lead needles are directly fixedly connected to the wires and cannot be disassembled separately. Although this design simplifies the manufacturing process to a certain extent, it also brings many inconveniences. Since the test lead needles often need to contact various terminals, pins, etc. in the circuit under test, after long-term use, the connection between the test lead needles and the wires is likely to become loose or even break due to wear or external force impact, resulting in unstable or interrupted measurement signals and affecting the accuracy of measurement results. When the test lead fails or needs to be repaired, due to the integrated design between the test lead needles and the wires, the entire test lead often needs to be sent back to the original factory or a professional repair center for replacement or repair, which not only increases the repair cost but also prolongs the repair cycle, bringing inconvenience to users.

[0034] To solve this technical problem, the present utility model provides a detachable test lead.

[0035] Specifically, please refer to Figures 1 - 5 , the detachable test lead specifically includes:

[0036] A test lead main body 1, the test lead main body 1 includes a test lead assembly, the test lead assembly is connected with an outer sleeve 101, and a test lead needle structure is inserted and connected to the inner wall of the outer sleeve 101;

[0037] The test lead needle structure includes an inner sleeve 102 inserted into the outer sleeve 101, a connecting rod 103 is inserted through the inner wall of the inner sleeve 102, one end of the connecting rod 103 is fixedly connected with a test lead needle main body 104; and one end of the test lead needle main body 104 extends to the outside of the inner sleeve 102, and a spring 105 is arranged in the inner sleeve 102, and both ends of the spring 105 are respectively connected with the connecting rod 103 and the inner sleeve 102.

[0038] For the detachable test lead provided by the present utility model, in this application, the test lead needle structure is provided, and the outer sleeve 101 and the test lead needle structure are arranged in an inserted connection manner to achieve detachable connection. Users can conveniently disassemble the test lead needle structure without complex tools or operations, reducing the repair difficulty and time cost.

[0039] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0040] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] Example 1, please refer to Figures 1 - 5 , a detachable test lead, including a test lead body 1. The test lead body 1 includes a test lead component. The test lead component is connected with an outer sleeve 101. A test lead needle structure is inserted and connected to the inner wall of the outer sleeve 101. Through the set test lead needle structure, the outer sleeve 101 and the test lead needle structure are arranged in an inserted connection to achieve detachable connection. Users can easily disassemble the test lead needle structure without complex tools or operations, reducing the maintenance difficulty and time cost;

[0043] The test lead needle structure includes an inner sleeve 102 inserted into the outer sleeve 101. A connecting rod 103 is inserted into the inner wall of the inner sleeve 102. One end of the connecting rod 103 is fixedly connected with a test lead needle body 104; and one end of the test lead needle body 104 extends to the outside of the inner sleeve 102. A spring 105 is arranged in the inner sleeve 102. Both ends of the spring 105 are respectively connected with the connecting rod 103 and the inner sleeve 102. The connecting rod 103 is movably arranged with respect to the inner sleeve 102, so that the test lead needle body 104 can stretch under the action of the spring 105. During use, when the user applies too much force, the test lead needle body 104 will squeeze the spring 105 to release the excessive force, causing the test lead needle body 104 to contract into the inner sleeve 102, reducing the damage to the item to be tested. The friction force between the surface of the inner sleeve 102 and the inner wall of the outer sleeve 101 can limit the inner sleeve 102, so that the inner sleeve 102 will not separate from the outer sleeve 101 under the action of gravity when it is vertical. When disassembling, pull the test lead needle body 104 to separate the inner sleeve 102 from the outer sleeve 101. When installing, insert the inner sleeve 102 into the outer sleeve 101.

[0044] Further, as Figure 4 shown, one end of the inner sleeve 102 away from the test lead needle body 104 is arc-shaped. This setting can facilitate the insertion of the inner sleeve 102 and the outer sleeve 101 together. Compared with the right-angle or other-shaped ends, the arc design reduces the obstacles and jams that may be encountered during insertion, reducing the difficulty and accuracy requirements of alignment. This not only improves the efficiency of the insertion operation, saves time, but also reduces the wear and damage of components caused by forced insertion. Whether in a working environment where the test lead needle structure needs to be frequently replaced or in an emergency situation where replacement is needed, this convenient insertion design can provide great convenience for users and ensure that the work can be carried out quickly and smoothly.

[0045] Further, as Figure 5 shown, one end of the inner sleeve 102 close to the test lead needle body 104 is provided with a reduced opening, and one end of the connecting rod 103 close to the test lead needle body 104 is provided with a frustum shape, so that the connecting rod 103 and the inner sleeve 102 can be limited to prevent the connecting rod 103 from detaching from the inner sleeve 102.

[0046] Example 2 further optimizes the detachable test lead provided in Example 1. Specifically, as Figure 1 and Figure 2 shown, the test lead assembly includes a connection base 106 connected to one end of the outer sleeve 101 away from the test lead needle body 104. The connection base 106 is connected to a test lead wire 107, and the test lead wire 107 is used to connect to a multimeter. The design of the connection base 106 and the test lead wire 107 is a key link for the test lead to achieve the measurement function, ensuring that the measurement signal transmitted by the test lead wire 107 can be stably and accurately transmitted to the test lead needle structure, which enables the test lead to establish reliable communication with the multimeter and achieve accurate measurement of various electrical parameters.

[0047] Furthermore, as Figure 1 and Figure 2 shown, an inner shell 108 is sleeved between the outer surfaces of the outer sleeve 101, the connection base 106, and the test lead wire 107, and a protective shell 109 is sleeved on the outer surface of the inner shell 108. The inner shell 108 and the protective shell 109 cooperate with each other to provide support and protection for the outer sleeve 101, the connection base 106, and the test lead wire 107.

[0048] Example 3 further optimizes the detachable test lead provided in Example 1 or 2. Specifically, as Figures 6 - 7 shown, a protective mechanism 2 is provided at one end of the protective shell 109 close to the test lead needle body 104. The protective mechanism 2 is used for the protection of the test lead needle body 104 and the auxiliary fixation of the protective shell 109 during use. Such a setting can reduce the damage of the test lead needle body 104 during the movement process. When in use, the protective shell 109 can be clamped on a certain support object through the protective mechanism 2, thereby liberating the operator's hand.

[0049] Furthermore, as Figures 6 - 7 shown, the protective mechanism 2 includes a first protective clamping plate 201 and a second protective clamping plate 202 clamped on both sides of the protective shell 109. Grooves 203 are provided on the sides of the second protective clamping plate 202 and the first protective clamping plate 201 close to each other. The setting of the grooves 203 facilitates the first protective clamping plate 201 and the second protective clamping plate 202 to clamp onto some thicker support objects, increasing the flexibility and adaptability of use. Because in actual applications, various support objects with different thicknesses may be encountered. Without the grooves 203, thicker objects cannot be clamped, restricting the fixed position and use scenarios of the test lead.

[0050] Furthermore, as Figure 7As shown in the figure, a chute 204 is provided inside the second protective splint 202. A connecting plate 205 is inserted into the chute 204. One end of the connecting plate 205 is fixedly connected to the first protective splint 201. A threaded groove is provided on the connecting plate 205, and a threaded rod 206 is threadedly connected to the threaded groove. The end of the threaded rod 206 away from the first protective splint 201 passes through the second protective splint 202 and is fixedly connected to a handwheel. During the process of rotating the threaded rod 206, the first protective splint 201 can be driven to move through the connecting plate 205, thereby realizing the adjustment between the first protective splint 201 and the second protective splint 202.

[0051] Further, as Figure 7 shown in the figure, a limiting groove 207 is provided on the second protective splint 202. A limiting rod 208 is inserted into the inner wall of the limiting groove 207. One end of the limiting rod 208 passes through the limiting groove 207 and is fixedly connected to the first protective splint 201. The cooperation between the limiting groove 207 and the limiting rod 208 can play an auxiliary limiting role on the first protective splint 201, thereby improving the stability between the first protective splint 201 and the second protective splint 202.

[0052] Further, as Figure 6 shown in the figure, a clamp 209 is fixedly installed on the second protective splint 202. The clamp 209 is adapted to the outer diameter of the protective shell 109, so that the clamp 209 can be clamped onto the outer surface of the protective shell 109.

[0053] Rotate the threaded rod 206 to make the first protective splint 201 away from the second protective splint 202, and pull the protective shell 109 to separate the protective shell 109 from the protection mechanism 2. Clamp the protective shell 109 onto the clamp 209, that is, as Figure 7 shown in the figure. At this time, the first protective splint 201 and the second protective splint 202 can be clamped onto the corresponding supporting object, so that the protective shell 109 does not need to be continuously held by hand during the detection process.

[0054] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0055] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are shown in the accompanying drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure that makes use of the content of the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, is similarly within the scope of the patent protection of the present utility model.

Claims

1. A detachable test lead, characterized in that, It includes a pen body (1), the pen body (1) includes a pen component, the pen component is connected with an outer sleeve (101), and a pen needle structure is inserted and connected to the inner wall of the outer sleeve (101); The pen needle structure includes an inner sleeve (102) inserted into the outer sleeve (101), a connecting rod (103) is inserted into the inner wall of the inner sleeve (102), and one end of the connecting rod (103) is fixedly connected with a pen needle body (104); and one end of the pen needle body (104) extends to the outside of the inner sleeve (102). A spring (105) is arranged in the inner sleeve (102), and both ends of the spring (105) are connected with the connecting rod (103) and the inner sleeve (102) respectively.

2. A detachable test lead according to claim 1, characterized in that, One end of the inner sleeve (102) away from the pen needle body (104) is arc-shaped.

3. A detachable test lead according to claim 1, wherein, One end of the inner sleeve (102) close to the pen needle body (104) is provided with a reduced opening, and one end of the connecting rod (103) close to the pen needle body (104) is frustum-shaped.

4. A detachable test lead according to claim 1, characterized in that, The pen component includes a connecting seat (106) connected to one end of the outer sleeve (101) away from the pen needle body (104), and the connecting seat (106) is connected with a pen wire (107).

5. A detachable test lead according to claim 4, characterized in that, An inner shell (108) is sleeved between the outer surfaces of the outer sleeve (101), the connecting seat (106) and the pen wire (107), and a protective shell (109) is sleeved on the outer surface of the inner shell (108).

6. The detachable test lead according to claim 5, wherein A protective mechanism (2) is arranged at one end of the protective shell (109) close to the pen needle body (104), and the protective mechanism (2) is used for protecting the pen needle body (104) and assisting in fixing the protective shell (109) during use.

7. A detachable test lead according to claim 6, characterized in that, The protective mechanism (2) includes a first protective splint (201) and a second protective splint (202) clamped on both sides of the protective shell (109), and grooves (203) are formed on the sides of the second protective splint (202) and the first protective splint (201) close to each other.

8. A detachable test lead according to claim 7, characterized in that, A sliding groove (204) is formed in the second protective splint (202), a connecting plate (205) is inserted and connected in the sliding groove (204), one end of the connecting plate (205) is fixedly connected with the first protective splint (201), a threaded groove is formed in the connecting plate (205), and a threaded rod (206) is threadedly connected in the threaded groove. One end of the threaded rod (206) away from the first protective splint (201) passes through the second protective splint (202) and is fixedly connected with a handwheel.

9. A detachable test lead according to claim 8, wherein, A limiting groove (207) is formed in the second protective splint (202), a limiting rod (208) is inserted and connected to the inner wall of the limiting groove (207), and one end of the limiting rod (208) passes through the limiting groove (207) and is fixedly connected with the first protective splint (201).

10. A detachable test lead according to claim 9, wherein A clamp (209) is fixedly installed on the second protective splint (202), and the clamp (209) is adapted to the outer diameter of the protective shell (109).

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