Hand-held detection terminal for circuit maintenance

Abstract

The invention discloses a handheld detection terminal for circuit maintenance. The handheld detection terminal comprises a fixed plate and a handheld opening mechanism, a detector is arranged on the front side face of the fixing plate, a single-chip microcomputer is arranged at the front end of the detector, the input end of the single-chip microcomputer is electrically connected with an external power source, and the single-chip microcomputer is electrically connected with the detector in a bidirectional mode; the handheld opening mechanism comprises a sliding groove, a two-way screw rod, two-way sliding seats, a connecting rod, a pin shaft and an L-shaped insulating sliding plate, the sliding groove is formed in the rear side of the interior of the fixing plate, the two-way sliding seats are vertically and symmetrically connected to the interior of the sliding groove in a sliding mode, and the two-way screw rod is rotationally connected to the interior of the sliding groove; the middle parts of the two bidirectional sliding seats are both in threaded connection with the external threaded surface of a bidirectional screw rod, the interiors of the two bidirectional sliding seats are rotatably connected with connecting rods in a bilateral symmetry manner, and the lower end of the connecting rod on the left upper side and the upper end of the connecting rod on the left lower side are both hinged to a pin shaft. And the follow-up handheld circuit detection operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit maintenance, in particular to a handheld detection terminal for circuit maintenance. Background Art

[0002] Electrical automation has become a common technology in existing technologies and is used in industry, agriculture, and even construction. Automation is the control of circuits through intelligent control terminals such as PLCs, thereby controlling the startup of equipment, etc. Therefore, in the composition of electrical automation components, there is a strong dependence on circuits. If there is a problem with the circuit, it will cause great losses, so the circuit will be checked through detection devices; Prior art: Patent publication number CN202223309375.5 discloses a handheld power load management terminal, comprising a management terminal with a display screen, control buttons, an infrared port, and indicator lights fixed to the front of the terminal. The rear end of the terminal is equipped with several equally spaced wiring terminals. A control unit module and a communication unit module are located in the middle of the terminal, and a removable housing is located at the bottom. Two clamping plates are located within the housing, which clamp onto the management terminal. Two fixing rods are located on the upper ends of each side of the housing, and handles are fixedly connected to the exterior of each side of the housing. Through the arrangement of the two clamping plates and four fixing rods, the terminal can be controlled. The above-mentioned management terminal has some problems in actual use, such as the lack of an effective protective structure, the terminal is easily damaged by external forces, there is no leakage protection structure, the safety performance is poor, and there is only a single handheld mode, which is not convenient for complex circuit inspection and testing operations. For this reason, we propose a handheld circuit inspection and testing terminal. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a handheld circuit maintenance detection terminal to facilitate subsequent handheld circuit detection operations, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a handheld circuit maintenance detection terminal, comprising a fixing plate and a handheld opening mechanism; Fixed plate: a detector is provided on the front side thereof, a single chip microcomputer is provided on the front end of the detector, an input end of the single chip microcomputer is electrically connected to an external power supply, and the single chip microcomputer is bidirectionally electrically connected to the detector; The handle is fixedly mounted on the cam, and the lever is pivotally connected to the bottom of the cam, and the lever is pivotally connected to the bottom of the cam, with the lever arm extending along the length of the L-shaped guide rail for sliding movement.

[0005] Furthermore, the handheld opening mechanism also includes a telescopic rod, which is symmetrically arranged on the left and right sides of the rear cross-section of the fixed plate. The telescopic ends of the two telescopic rods on the left are fixedly connected to the right side wall of the L-shaped insulating sliding plate on the left, and the telescopic ends of the two telescopic rods on the right are fixedly connected to the right side wall of the L-shaped insulating sliding plate on the right, providing a relatively stable guiding force for the handle to pop out.

[0006] Furthermore, the handheld opening mechanism also includes a wedge-shaped groove and a support rod. The wedge-shaped grooves are respectively opened on the lower side of the rear side of the two L-shaped insulating sliding plates, and the lower side of the rear side of the fixed plate is connected to the support rod by a rotating shaft so as to rotate symmetrically on the left and right. The outer arc surface of the support rod is respectively slidably connected to the inner part of the wedge-shaped groove on the same side. The lower surface of the fixed plate is symmetrically provided with rubber support blocks on the left and right, and the lower ends of the two support rods are also fixedly connected to the rubber support blocks to realize the function of four-corner support.

[0007] Furthermore, a control switch is provided at the right end of the fixing plate, and the input end of the control switch is electrically connected to the output end of the single chip microcomputer to realize the function of electrically controlling the opening and closing.

[0008] Furthermore, a motor is provided on the lower inner side of the fixed plate, the output shaft of the motor is fixedly connected to the lower end of the bidirectional screw rod, and the input end of the motor is electrically connected to the output end of the control switch to provide power for opening.

[0009] Furthermore, the rear side surface of the fixed plate is provided with evenly distributed wiring terminals, and the rear side surfaces of the two L-shaped insulating sliding plates are provided with evenly distributed connector avoidance holes, the connector avoidance holes correspond to the front and rear positions of the wiring terminals one by one, and the output ends of the four wiring terminals are electrically connected to the input end of a detector to realize the line access function.

[0010] Furthermore, the rear side surface of the fixing plate is provided with evenly distributed rounded heat dissipation openings to achieve the heat dissipation function.

[0011] Furthermore, it also includes a protective shell, the outer protective shells are respectively arranged on the front surfaces of the two L-shaped insulating sliding plates, and the upper surfaces of the two outer protective shells are respectively provided with pulling handles to realize the portable movement of the terminal.

[0012] Furthermore, the outer protective shell is an ABS plastic plate with strong hardness.

[0013] Compared with the prior art, the present invention has the following advantages: 1. When the test terminal is not in use, the outer protective shell encapsulates the entire test terminal to prevent the test terminal from being damaged by external forces. During the use of the test terminal, if the circuit leaks, if the test terminal is used correctly at this time, the leakage current will be isolated by the L-shaped insulating sliding plate to prevent the leakage current from injuring the staff. The safety performance of the entire test terminal is relatively high.

[0014] 2. Through the screw mechanism and connecting rod structure, when the detection terminal needs to be used, the handheld handle can be intelligently popped out. After the handheld handle is popped out, it is subject to the self-locking characteristics of the screw rod, which has high stability. At this time, the detection terminal can be quickly switched from handheld to two-handed dragging, which is convenient for subsequent handheld circuit detection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view structural diagram of the present invention; Figure 3 It is a structural diagram of the detector and the single chip microcomputer of the present invention; Figure 4 This is a structural diagram of the handheld opening mechanism of the present invention; Figure 5 This is an enlarged structural diagram of point A of the present invention; Figure 6 It is a partial structural diagram of the handheld opening mechanism of the present invention; Figure 7 It is a structural schematic diagram of the bidirectional sliding seat of the present invention.

[0016] Figure: 1 fixed plate, 2 handheld opening mechanism, 21 slide, 22 bidirectional screw, 23 bidirectional sliding seat, 24 connecting rod, 25 pin, 26 telescopic rod, 27 L-shaped insulating sliding plate, 28 wedge-shaped groove, 29 support rod, 3 handheld handle, 4 detector, 5 single-chip microcomputer, 6 control switch, 7 wiring terminal, 8 connector avoidance hole, 9 motor, 10 rounded heat dissipation vent, 11 outer protective shell, 12 rubber support block, 13 lifting handle DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-7 ,This embodiment provides a technical solution: a handheld circuit maintenance detection terminal, comprising a fixing plate 1 and a handheld opening mechanism 2; Fixed plate 1: A detector 4 is provided on its front side, and a single-chip microcomputer 5 is provided at the front end of the detector 4. The input end of the single-chip microcomputer 5 is electrically connected to an external power supply. The single-chip microcomputer 5 and the detector 4 are bidirectionally electrically connected. The rear side of the fixed plate 1 is provided with evenly distributed rounded heat dissipation vents 10. At this time, the single-chip microcomputer 5 can be controlled, and the detector 4 is operated to return the detected circuit information to the single-chip microcomputer 5 in the form of an electrical signal. At this time, the circuit information can be manually detected in real time through the single-chip microcomputer 5. During this period, if the circuit leakage is detected, the hand-held handle 3 is manually held; Handheld opening mechanism 2: It includes a slide 21, a bidirectional screw 22, a bidirectional sliding seat 23, a connecting rod 24, a pin 25 and an L-shaped insulating sliding plate 27. The slide 21 is opened on the inner rear side of the fixed plate 1. The inner part of the slide 21 is symmetrically connected to the bidirectional sliding seat 23 for sliding up and down sliding. The inner part of the slide 21 is rotatably connected to the bidirectional screw 22. The middle part of the two bidirectional sliding seats 23 is threadedly connected to the external thread surface of a bidirectional screw 22. The inner parts of the two bidirectional sliding seats 23 are respectively symmetrically connected to the connecting rod 24 for rotation left and right. The lower end of the connecting rod 24 on the upper left side and the upper end of the connecting rod 24 on the lower left side are both hinged to a pin 25, and the lower end of the connecting rod 24 on the upper right side and the upper end of the connecting rod 24 on the lower right side are both hinged to a pin 25. The rear ends of the two pins 25 are respectively An L-shaped insulating sliding plate 27 is fixedly connected, and the ends of the two L-shaped insulating sliding plates 27 away from the center of the fixed plate 1 are respectively fixedly connected to the hand-held handles 3. The hand-held opening mechanism 2 also includes a telescopic rod 26, and the telescopic rod 26 is symmetrically arranged on the left and right sides of the rear side section of the fixed plate 1. The telescopic ends of the two telescopic rods 26 on the left are fixedly connected to the right side wall of the L-shaped insulating sliding plate 27 on the left, and the telescopic ends of the two telescopic rods 26 on the right are fixedly connected to the right side wall of the L-shaped insulating sliding plate 27 on the right. The hand-held opening mechanism 2 also includes a wedge-shaped groove 28 and a support rod 29. The wedge-shaped grooves 28 are respectively opened on the lower sides of the rear sides of the two L-shaped insulating sliding plates 27, and the lower side of the rear side of the fixed plate 1 is symmetrically rotated with the support rod 2 through a rotating shaft. 9, the outer arc surface of the support rod 29 is respectively connected to the inner sliding of the wedge-shaped groove 28 on the same side, the lower surface of the fixed plate 1 is symmetrically provided with a rubber support block 12, and the lower ends of the two support rods 29 are also fixedly connected to the rubber support block 12, the right end of the fixed plate 1 is provided with a control switch 6, the input end of the control switch 6 is electrically connected to the output end of the single-chip microcomputer 5, the inner lower side of the fixed plate 1 is provided with a motor 9, the output shaft of the motor 9 is fixedly connected to the lower end of the bidirectional screw rod 22, the input end of the motor 9 is electrically connected to the output end of the control switch 6, the rear side surface of the fixed plate 1 is provided with evenly distributed wiring terminals 7, the rear side surfaces of the two L-shaped insulating sliding plates 27 are provided with evenly distributed connector avoidance holes 8, the connector avoidance holes 8 correspond to the front and rear positions of the wiring terminals 7, and the four connectors are provided. The output ends of the wire terminals 7 are electrically connected to the input ends of a detector 4, and also include a protective shell 11. The outer protective shells 11 are respectively arranged on the front surfaces of the two L-shaped insulating sliding plates 27. The upper surfaces of the two outer protective shells 11 are respectively provided with lifting handles 13. The outer protective shells 11 are ABS plastic plates. When the detection terminal needs to be used, the control switch 6 can be adjusted, the motor 9 is operated, and the output shaft of the motor 9 rotates, thereby driving the bidirectional screw rod 22 to rotate, thereby driving the two bidirectional sliding seats 23 to move relatively close, and then driving the two pin shafts 25 to move relatively away through the connecting rod 24, thereby driving the two L-shaped insulating sliding plates 27 to move relatively away. When the two L-shaped insulating sliding plates 27 move to the specified position, the two handheld handles 3 pop out.The two support rods 29 will also pop out, and the four rubber support blocks 12 will support the detection terminal. At this time, the detection terminal is upright. When the two L-shaped insulating sliding plates 27 are moved to the designated position, the connector avoidance hole 8 is aligned with the longitudinally adjacent terminal 7. At this time, the external circuit wire can be connected to the inside of the terminal 7. At this time, the detection terminal can be manually picked up by the handheld handle 3. The leakage current will be isolated by the L-shaped insulating sliding plates 27, so that the current will not harm the construction personnel. After the test is completed, the control switch 6 can be controlled, and the L-shaped insulating sliding plates 27 are reset. At this time, the two outer protective shells 11 are enclosed to protect the entire detection terminal.

[0019] The working principle of a handheld circuit maintenance detection terminal provided by the present invention is as follows: when the detection terminal needs to be used, the control switch 6 can be adjusted, the motor 9 is operated, the output shaft of the motor 9 rotates, and then the bidirectional screw rod 22 is driven to rotate, and then the two bidirectional sliding seats 23 are driven to move relatively close, and then the two pin shafts 25 are driven to move relatively away from each other through the connecting rod 24, and then the two L-shaped insulating sliding plates 27 are driven to move relatively away from each other. When the two L-shaped insulating sliding plates 27 move to the specified position, the two handheld handles 3 pop out, and the two support rods 29 also pop out, and the four rubber support blocks 12 support the detection terminal. At this time, the detection terminal is erected, and when the two L-shaped insulating sliding plates 27 move to the specified position, the connecting rod 24 is driven to move relatively away from each other. The connector avoidance hole 8 is aligned front to back with the longitudinally adjacent terminal 7. At this time, the external circuit wire can be connected to the inside of the terminal 7. At this time, the detection terminal can be manually picked up by the handheld handle 3. During this period, the single-chip microcomputer 5 can be controlled to operate the detector 4, and the detected circuit information can be returned to the single-chip microcomputer 5 in the form of an electrical signal. At this time, the circuit information can be manually detected in real time through the single-chip microcomputer 5. During this period, if the detection circuit leaks, the handheld handle 3 is manually held, and the leakage current will be isolated by the L-shaped insulating sliding plate 27 to prevent the current from harming the construction personnel. After the detection is completed, the control switch 6 can be controlled, and the L-shaped insulating sliding plate 27 can be reset. At this time, the two outer protective shells 11 are encapsulated to protect the entire detection terminal.

[0020] It is worth noting that the single-chip microcomputer 5 disclosed in the above embodiment is specifically model S7-200, and the detector 4, the terminal 7 and the motor 9 can be freely configured according to the actual application scenario. It is recommended to use the EMT-3B multi-function electrical tester for the detector 4, the 43030-0005 plug-in connector for the terminal 7, and the 55LYX series motor for the motor 9. The single-chip microcomputer 5 controls the operation of the detector 4 using methods commonly used in the prior art, and the control switch is provided with a control button corresponding to the motor 9 and used to control its switch.

[0021] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A handheld circuit maintenance detection terminal, characterized by: It comprises a fixing plate (1) and a handheld opening mechanism (2); A fixed plate (1): a detector (4) is provided on the front side thereof, a single chip microcomputer (5) is provided at the front end of the detector (4), an input end of the single chip microcomputer (5) is electrically connected to an external power supply, and the single chip microcomputer (5) and the detector (4) are bidirectionally electrically connected; The handheld opening mechanism (2) comprises a slide (21), a bidirectional screw (22), a bidirectional sliding seat (23), a connecting rod (24), a pin (25) and an L-shaped insulating sliding plate (27). The slide (21) is provided on the inner rear side of the fixed plate (1). The slide (21) is symmetrically connected to the bidirectional sliding seat (23) in an upper and lower sliding manner. The slide (21) is rotatably connected to the bidirectional screw (22). The middle part of the two bidirectional sliding seats (23) is threadedly connected to the outer thread surface of a bidirectional screw (22). The two bidirectional sliding seats (23) are connected to the outer thread surface of the bidirectional screw (22). The interior of the sliding seat (23) is connected to a connecting rod (24) for symmetrical rotation on the left and right sides. The lower end of the connecting rod (24) on the upper left side and the upper end of the connecting rod (24) on the lower left side are both hinged to a pin (25). The lower end of the connecting rod (24) on the upper right side and the upper end of the connecting rod (24) on the lower right side are both hinged to a pin (25). The rear ends of the two pins (25) are respectively fixedly connected to an L-shaped insulating sliding plate (27). The ends of the two L-shaped insulating sliding plates (27) away from the center of the fixed plate (1) are respectively fixedly connected to a handheld handle (3).

2. A handheld circuit maintenance detection terminal according to claim 1, characterized in that: The handheld opening mechanism (2) further includes telescopic rods (26), which are symmetrically arranged on the left and right sides of the rear side section of the fixed plate (1) respectively. The telescopic ends of the two telescopic rods (26) on the left are fixedly connected to the right side wall of the L-shaped insulating sliding plate (27) on the left, and the telescopic ends of the two telescopic rods (26) on the right are fixedly connected to the right side wall of the L-shaped insulating sliding plate (27) on the right.

3. The handheld circuit maintenance detection terminal according to claim 1, characterized in that: The handheld opening mechanism (2) further comprises a wedge-shaped groove (28) and a support rod (29), wherein the wedge-shaped groove (28) is respectively provided on the lower side of the rear side of the two L-shaped insulating sliding plates (27), and the lower side of the rear side of the fixed plate (1) is symmetrically connected to the support rod (29) via a rotating shaft, and the outer arc surface of the support rod (29) is respectively slidably connected to the inner portion of the wedge-shaped groove (28) located on the same side, and the lower surface of the fixed plate (1) is symmetrically provided with a rubber support block (12), and the lower ends of the two support rods (29) are also fixedly connected to the rubber support block (12).

4. The handheld circuit maintenance detection terminal according to claim 1, characterized in that: A control switch (6) is provided at the right end of the fixed plate (1), and the input end of the control switch (6) is electrically connected to the output end of the single chip computer (5).

5. The handheld circuit maintenance detection terminal according to claim 4, characterized in that: A motor (9) is provided on the inner lower side of the fixed plate (1), the output shaft of the motor (9) is fixedly connected to the lower end of the bidirectional screw rod (22), and the input end of the motor (9) is electrically connected to the output end of the control switch (6).

6. The handheld circuit maintenance detection terminal according to claim 1, characterized in that: The rear side surface of the fixed plate (1) is provided with evenly distributed wiring terminals (7), and the rear side surfaces of the two L-shaped insulating sliding plates (27) are provided with evenly distributed connector avoidance holes (8), the connector avoidance holes (8) correspond to the front and rear positions of the wiring terminals (7) one by one, and the output ends of the four wiring terminals (7) are all electrically connected to the input end of a detector (4).

7. The handheld circuit maintenance detection terminal according to claim 1, characterized in that: The rear side surface of the fixing plate (1) is provided with evenly distributed rounded heat dissipation openings (10).

8. The handheld circuit maintenance detection terminal according to claim 1, characterized in that: It also includes a protective shell (11), wherein the outer protective shells (11) are respectively arranged on the front surfaces of the two L-shaped insulating sliding plates (27), and the upper surfaces of the two outer protective shells (11) are respectively provided with a lifting handle (13).

9. The handheld circuit maintenance detection terminal according to claim 8, characterized in that: The outer protective shell (11) is an ABS plastic plate.

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