Probe with protection structure

Abstract

The utility model provides a probe with a protective structure, which relates to the technical field of probes and comprises a probe sleeve shell, a protective sleeve shell, a probe head, a guide column, a return spring and a limit sealing cover. The probe sleeve shell is nested on the outer side surface of the tail end connecting shell; the probe sleeve shell is connected with the tail end connecting shell in a welding manner; the protective sleeve shell is connected with the tail end connecting shell through thread engagement. The limiting sealing cover is screwed with the tail end connecting shell through threads; the return spring is nested on the outer side surface of the probe rod; the probe head and the probe rod are screwed through threads; the top end of the guide column is connected with the tail end connecting shell in a welded mode. Through the arrangement of the probe head, the protective sleeve shell, the limiting sealing cover and the tail end connecting shell, not only is the probe head covered and protected, but also the probe parts are convenient to disassemble, replace and maintain, and the problems that the replacement and maintenance of the parts of the traditional probe are poor and the protective property of the probe is poor are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of probes, and more specifically, particularly relates to a probe with a protective structure. Background Art

[0002] A circuit board probe is a tool that tests the electrical properties of the contact pins of an electrical board by contact or non-contact means. It is widely used in the production, maintenance and testing of electronic products so that testers can quickly and accurately detect whether the circuit connection and electrical signal transmission on the circuit board are normal. At present, the circuit board probe is composed of a variety of different types of probes, probe rods, sleeves and spring components in an integrated structure. Each group of components cannot be disassembled and separated, and the overall structure is relatively fixed. If a component of the circuit board probe is damaged, other intact components will also be discarded. It can be seen that the components of traditional probes are not easily replaceable, and the general maintainability is poor, which easily leads to waste of probe components. In addition, the probe component structure of the circuit board probe is relatively exposed, and the head position of the probe is prone to collision with external objects, causing wear on the chrome-plated surface of the probe, damaging the probe contact structure, and affecting the stability of circuit detection. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a probe with a protective structure to solve the problems of poor replacement and maintenance of components of traditional probes and poor protection of the probe.

[0004] The utility model provides a probe with a protective structure, comprising a probe shell; the probe shell is nested in the outer side of a tail terminal shell, and the probe shell is welded to the tail terminal shell; it also includes a protective shell, a probe head, a guide column, a return spring and a limiting sealing cover; the protective shell is connected to the tail terminal shell by threaded engagement; the limiting sealing cover is screwed to the tail terminal shell by threaded connection; the return spring is nested in the outer side of the probe rod, the bottom end of the return spring is tightly fitted with the probe rod, and the top end of the return spring is tightly fitted with the tail terminal shell; the probe head is screwed to the probe rod by threaded connection; the top end of the guide column is welded to the tail terminal shell.

[0005] In at least some embodiments, a circular deep hole is provided at the center position of the upper side surface of the probe rod, the guide column is embedded in the circular deep hole of the probe rod, the guide column and the probe rod are slidably connected through the circular deep hole, the outer side surface of the probe rod near the bottom end is provided with a thread, and the outer side surface of the middle position of the probe rod is provided with a ring plate, and the bottom end of the return spring is attached to the ring plate of the probe rod.

[0006] In at least some embodiments, a threaded hole is provided at the center of the upper side surface of the probe head, and the threaded end of the outer side surface of the probe rod is screwed into the threaded hole of the probe head.

[0007] In at least some embodiments, the protective shell is a cylindrical structure that passes through from top to bottom. The protective shell is embedded between the tail terminal shell and the probe shell. The probe head is embedded inside the cylindrical structure of the protective shell. A threaded structure is provided on the inner side of the protective shell. The protective shell is made of insulating transparent PVC material, and the bottom edge of the protective shell is an arc-shaped structure.

[0008] In at least some embodiments, the tail terminal shell is a cylindrical structure with an opening at the bottom, and the outer and inner sides of the cylinder of the tail terminal shell are provided with threaded structures near the bottom opening, and the threads on the inner side of the protective shell are engaged with the threaded structure on the outer side of the tail terminal shell.

[0009] In at least some embodiments, a cylindrical boss is provided on the upper side of the limiting sealing cover, a through hole is provided at the central portion of the top end of the cylindrical boss, the probe rod is slidably connected in the through hole of the limiting sealing cover, the ring plate structure of the probe rod is arranged on the upper side of the boss of the limiting sealing cover, the diameter of the through hole of the boss of the limiting sealing cover is smaller than the diameter of the ring plate of the probe rod, a thread is provided on the outer side of the boss of the limiting sealing cover, and the limiting sealing cover is connected to the threaded surface on the inner side of the opening at the bottom end of the tail terminal shell through threaded engagement.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, the probe head is embedded in the inner side of the protective sleeve cylindrical structure and the protective sleeve and the tail end shell form a threaded engagement structure. When the probe head is in the test state, the protective sleeve provides follow-up protection for the probe head. When the probe head is not in the test state, the protective sleeve provides fixed covering protection for the probe head. The exposed structure of the traditional probe at the probe head is abandoned, the probability of contact and collision between the probe head and external objects is reduced, the collision damage of the chrome-plated surface of the probe head is prevented, and the service life of the probe head is increased.

[0012] 2. In the utility model, the threaded connection structure of the limiting sealing cover at the bottom opening of the tail shell and the threaded connection structure of the threaded hole of the probe head at the threaded end at the bottom of the probe rod are used to realize the separate disassembly of the various components of the probe and the universal replacement of different types of probe heads, thereby avoiding the situation that the main components of the traditional probe cannot be disassembled. When some parts of the probe are damaged, they can be disassembled and replaced with new parts, and the intact parts can be retained for continued use, thereby avoiding the waste of probe component materials and reducing the cost of using the probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the utility model in an upward and side view.

[0015] Figure 3 It is a front view structural schematic diagram of the utility model.

[0016] Figure 4 It is a schematic diagram of the structure of the utility model when viewed from above.

[0017] Figure 5 It is a schematic diagram of the top structure of the utility model.

[0018] Figure 6 It is a front view cross-sectional structural schematic diagram of the utility model.

[0019] Figure 7 The utility model Figure 6 Schematic diagram of the enlarged structure of part A in the middle.

[0020] Figure 8 It is a schematic diagram of the cutaway structure of the utility model.

[0021] Figure numerals: 1, tail end shell; 2, probe cover shell; 3, sheath shell; 4, probe head; 5, probe rod; 6, guide column; 7, return spring; 8, limit sealing cover. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figure 1-Figure 8 As shown, the utility model provides a probe with a protective structure, including a probe shell 2; the probe shell 2 is nested in the outer side of the tail terminal shell 1, and the probe shell 2 is welded to the tail terminal shell 1; it also includes a protective shell 3, a probe head 4, a guide column 6, a return spring 7 and a limiting sealing cover 8; the protective shell 3 is connected to the tail terminal shell 1 through threaded engagement; the limiting sealing cover 8 is screwed to the tail terminal shell 1 through threads; the return spring 7 is nested in the outer side of the probe rod 5, the bottom end of the return spring 7 is tightly fitted with the probe rod 5, and the top end of the return spring 7 is tightly fitted with the tail terminal shell 1; the probe head 4 is screwed to the probe rod 5 through threads; the top end of the guide column 6 is welded to the tail terminal shell 1.

[0024] When the utility model is installing the probe, the return spring 7 is placed into the inner side of the cylinder of the tail terminal shell 1 from the bottom opening of the tail terminal shell 1. At this time, the return spring 7 is nested on the outer side of the guide column 6, and then the probe rod 5 is inserted into the tail terminal shell 1. The probe rod 5 is nested in the outer side of the guide column 6 through the deep hole at the top, and the return spring 7 is nested in the outer side of the probe rod 5. The probe rod 5 is inserted into the through hole of the limiting sealing cover 8, and then the limiting sealing cover 8 is screwed on the threaded part of the inner side of the tail terminal shell 1. Finally, a probe head 4 of a suitable model is selected, and the threaded hole of the probe head 4 is screwed on the threaded end at the bottom of the probe rod 5 to complete the installation of the probe detection parts. When the probe needs to be covered and protected in a non-testing state, the protective cover 3 is inserted from the bottom end of the probe cover 2 and The threaded structure on the inner side of the protective shell 3 is meshed and connected to the threaded surface on the outer side of the tail terminal shell 1. At this time, the probe head 4 is embedded in the protective shell 3 to prevent external objects from colliding with the probe head 4. When the probe needs to be protected under the test state, the protective shell 3 is twisted to move the protective shell 3 upward between the tail terminal shell 1 and the probe shell 2 until the threaded surface of the protective shell 3 is separated from the threaded structure on the outer side of the tail terminal shell 1. At this time, the protective shell 3 slides flexibly between the tail terminal shell 1 and the probe shell 2, and the bottom end of the probe head 4 is exposed from the bottom end of the protective shell 3. During the detection of the solder joints of the circuit board, when the probe head 4 contacts the solder joints and is squeezed back, after the protective shell 3 contacts the solder joints, it retracts and moves synchronously on the outside of the probe head 4 and covers the probe head 4 for protection.

[0025] In the disclosed embodiment, a circular deep hole is provided at the center position of the upper side surface of the probe rod 5, and a guide column 6 is embedded in the circular deep hole of the probe rod 5. The guide column 6 and the probe rod 5 are slidably connected through the circular deep hole. The outer side surface of the probe rod 5 near the bottom end is provided with a thread, and the outer side surface of the middle position of the probe rod 5 is provided with a ring plate. The bottom end of the return spring 7 is attached to the ring plate of the probe rod 5. The nested sliding structure of the guide column 6 and the probe rod 5 is utilized to prevent the return spring 7 from being entangled during compression, thereby ensuring that the return spring 7 pushes the ring plate of the probe rod 5 to stably return the probe head 4.

[0026] In the disclosed embodiment, a threaded hole is provided at the center position of the upper side surface of the probe head 4, and the threaded end of the outer side surface of the probe rod 5 is screwed into the threaded hole of the probe head 4, thereby realizing a universal connection between the probe rod 5 and the probe head 4, and facilitating the disassembly and replacement of probe heads 4 of different models at the bottom end of the probe rod 5.

[0027] In the disclosed embodiment, the protective shell 3 is a cylindrical structure that passes through from top to bottom. The protective shell 3 is embedded between the tail terminal shell 1 and the probe shell 2, and the probe head 4 is embedded inside the cylindrical structure of the protective shell 3, so that the protective shell 3 covers and protects the probe head 4. The inner side of the protective shell 3 is provided with a threaded structure. The protective shell 3 is made of insulating transparent PVC material. The insulating PVC material prevents the protective shell 3 from accidentally touching other welding points, avoids current conduction between welding points, and ensures detection stability and accuracy. The bottom edge of the protective shell 3 is an arc-shaped structure to avoid leaving an imprint on the welding point of the board when the protective shell 3 contacts the welding point of the board, thereby protecting the integrity of the board.

[0028] In the disclosed embodiment, the tail terminal shell 1 is a cylindrical structure with an opening at the bottom, and the outer side surface and the inner side surface of the cylinder of the tail terminal shell 1 near the bottom opening are provided with a threaded structure, and the threaded engagement of the inner side surface of the protective sleeve 3 is connected to the threaded structure of the outer side surface of the tail terminal shell 1, and the tail terminal shell 1 moves and limits the protective sleeve 3 to prevent the movement of the protective sleeve 3 and cause the probe head 4 to leak out.

[0029] In the disclosed embodiment, a cylindrical boss is provided on the upper side of the limiting sealing cover 8, and a through hole is provided at the central portion of the top end of the cylindrical boss. The probe rod 5 is slidably connected in the through hole of the limiting sealing cover 8. The ring plate structure of the probe rod 5 is arranged on the upper side of the boss of the limiting sealing cover 8. The diameter of the through hole of the boss of the limiting sealing cover 8 is smaller than the diameter of the ring plate of the probe rod 5, so as to complete the sliding limitation of the probe rod 5 on the inner side of the tail terminal shell 1. A thread is provided on the outer side of the boss of the limiting sealing cover 8. The limiting sealing cover 8 is connected to the threaded surface on the inner side of the bottom end opening of the tail terminal shell 1 through threaded engagement. The threaded assembly structure of the limiting sealing cover 8 and the tail terminal shell 1 facilitates the separate disassembly of the probe rod 5 and the return spring 7 in the tail terminal shell 1, and the operation is simple and convenient for maintenance and replacement of components.

[0030] The installation, connection or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc., and the specific structures, models and coefficient indicators of all its components are its own technology, as long as it can achieve its beneficial effects, it can be implemented. The return spring 7 used above is a common component on the market. When it is bought back and used, it only needs to be connected according to the instruction manual purchased together, so it will not be repeated here.

[0031] The technical solution of the present invention is not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A probe with a protective structure, comprising a probe cover (2); the probe cover (2) is nested on the outer side of a tail terminal shell (1), and the probe cover (2) and the tail terminal shell (1) are welded and connected; characterized in that: It also includes a protective shell (3), a probe head (4), a guide column (6), a return spring (7) and a limit sealing cover (8); the protective shell (3) is connected to the tail end shell (1) by threaded engagement; the limit sealing cover (8) is screwed to the tail end shell (1) by threaded connection; the return spring (7) is nested in the outer side of the probe rod (5), the bottom end of the return spring (7) is tightly fitted with the probe rod (5), and the top end of the return spring (7) is tightly fitted with the tail end shell (1); the probe head (4) is screwed to the probe rod (5) by threaded connection; the top end of the guide column (6) is welded to the tail end shell (1).

2. A probe with a protective structure as claimed in claim 1, characterized in that: A circular deep hole is provided at the center of the upper side surface of the probe rod (5), a guide column (6) is embedded in the circular deep hole of the probe rod (5), the guide column (6) and the probe rod (5) are slidably connected through the circular deep hole, a thread is provided on the outer side surface of the probe rod (5) near the bottom end, a ring plate is provided on the outer side surface of the middle position of the probe rod (5), and the bottom end of the return spring (7) is attached to the ring plate of the probe rod (5).

3. A probe with a protective structure as claimed in claim 1, characterized in that: A threaded hole is provided at the center of the upper side surface of the probe head (4), and the threaded end of the outer side surface of the probe rod (5) is screwed into the threaded hole of the probe head (4).

4. A probe with a protective structure as claimed in claim 1, characterized in that: The protective shell (3) is a cylindrical structure that penetrates from top to bottom. The protective shell (3) is embedded between the tail end shell (1) and the probe shell (2). The probe head (4) is embedded inside the cylindrical structure of the protective shell (3). The inner side surface of the protective shell (3) is provided with a threaded structure. The protective shell (3) is made of an insulating transparent PVC material, and the bottom edge of the protective shell (3) is an arc-shaped structure.

5. The probe with a protective structure as claimed in claim 1, characterized in that: The tail end connection shell (1) is a cylindrical structure with an opening at the bottom, and the outer side surface and the inner side surface of the cylinder of the tail end connection shell (1) near the bottom opening are both provided with thread structures, and the threads on the inner side surface of the protective sleeve (3) are meshedly connected to the thread structures on the outer side surface of the tail end connection shell (1).

6. A probe with a protective structure as claimed in claim 1, characterized in that: The upper side of the limiting sealing cover (8) is provided with a cylindrical protrusion, and the central part of the top of the cylindrical protrusion is provided with a through hole. The probe rod (5) is slidably connected in the through hole of the limiting sealing cover (8). The ring plate structure of the probe rod (5) is arranged on the upper side of the protrusion of the limiting sealing cover (8). The diameter of the through hole of the protrusion of the limiting sealing cover (8) is smaller than the diameter of the ring plate of the probe rod (5). The outer side of the protrusion of the limiting sealing cover (8) is provided with a thread. The limiting sealing cover (8) is connected to the threaded surface on the inner side of the bottom end opening of the tail terminal shell (1) through threaded engagement.

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