Instrument signal wiring terminal

Abstract

The utility model discloses an instrument signal wiring terminal, and relates to the technical field of signal wiring. The wiring device comprises a wiring end assembly, a movable pin assembly and a wiring power mechanism, wherein the wiring end assembly comprises two wiring columns which are symmetrically arranged; the movable pin assembly is arranged between the two binding posts in a sliding mode. The movable pin assembly comprises telescopic movable pins which are symmetrically arranged. The wiring power mechanism comprises a transmission connecting assembly and a power driving assembly, the transmission connecting assembly is fixedly connected to the peripheral side face of the movable pin assembly, and the power driving assembly comprises a transmission disc rotating intermittently. According to the utility model, the transmission disc rotates to drive the movable pin assembly to rotate and contact with the binding post, and the movable pin is compressed until the movable pin is in sliding fit with the binding post, the movable pin is clamped with the binding post, and the movable pin is separated from the binding post along with the rotation of the transmission disc, so that connection and disconnection of instrument signals are realized; accidents caused by direct contact are avoided, and subsequent signal measurement is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of signal wiring, in particular to an instrument signal wiring terminal. Background Art

[0002] The terminal block is a connection accessory product for achieving electrical connection. It is mainly used to facilitate the connection between wires. It uses a piece of metal sheet sealed in insulating plastic, with connecting holes at both ends to insert the wires. The wires can be disconnected or connected by tightening or loosening them. There is no need to weld or twist the connecting wires together. It can facilitate the connection and disconnection of electrical equipment in actual use and meet specific usage needs.

[0003] In daily automation failures, it is necessary to measure the signal output current value of the instrument in the PLC cabinet. At present, the wiring block of the instrument input signal in the PLC cabinet is generally a terminal with wiring screws. When measuring the current value, the signal line needs to be removed and then the multimeter is connected to the loop. In this process, the contact part between the line and the multimeter probe is usually fixed by hand. There are many collected signals and the collection space is small. The disassembly and assembly of the wiring will be more troublesome. When the metal part of the signal line is touched by hand, accidents may occur. To this end, we provide an instrument signal terminal to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide an instrument signal wiring terminal, which solves the problems in the above-mentioned background technology through the specific structural design of the wiring terminal component, the movable pin component and the wiring power mechanism.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses an instrument signal terminal block, comprising a terminal block assembly, a movable pin assembly and a wiring power mechanism, wherein the terminal block assembly comprises two symmetrically arranged terminal posts, and a wiring port is provided on the surface of the terminal post; the movable pin assembly is slidably arranged between the two terminal posts, and the movable pin assembly comprises symmetrically arranged and retractable movable pins, and the movable pins are slidably matched with the wiring port; the wiring power mechanism is fixedly mounted on the peripheral side of the movable pin assembly, and the wiring power mechanism comprises a transmission connection assembly and a power drive assembly, and the transmission connection assembly is fixedly connected to the peripheral side of the movable pin assembly, and the power drive assembly comprises an intermittently rotating transmission disc, and the transmission disc is fixedly connected to the transmission connection assembly.

[0007] The rotation of the transmission disc drives the movable pin assembly to rotate synchronously. When the two terminals of the movable pin come into contact with each other, the movable pin is compressed until the movable pin slides and fits with the wiring port. The movable pin returns to its original position and engages with the two terminals to complete the connection of the instrument signal. When the connection needs to be disconnected, the transmission disc continues to be driven, the movable pin is compressed again, and is separated from the two terminals as the transmission disc rotates.

[0008] The utility model further comprises a connecting protective shell, an installation cavity is symmetrically opened inside the connecting protective shell, and the movable pin is slidingly connected to the connecting protective shell; a telescopic rod and a first return spring are fixedly connected between the inner wall of the installation cavity and the movable pin, and the first return spring is sleeved on the outside of the telescopic rod.

[0009] The utility model further comprises a transmission connection assembly comprising a transmission plate, a communication port is provided on the surface of the transmission plate, a peripheral side surface of the connection protection shell is fixedly connected to an inner wall of the communication port, and a transmission rod is fixedly connected to the surface of the transmission plate.

[0010] The utility model further comprises a mounting base, a hollow cylinder is fixedly connected to the upper surface of the mounting base, a plurality of limit cavities are provided on the surface of the hollow cylinder; a second return spring is fixedly connected to the inside of the limit cavity, and one end of the second return spring is fixedly connected to the limit block.

[0011] The utility model further comprises a connecting handle rotatably arranged inside the hollow cylinder, the transmission disc is slidably arranged on the peripheral side of the connecting handle, the transmission rod passes through one end of the hollow cylinder and is fixedly connected to the transmission disc, and the surface of the transmission disc is provided with engaging grooves corresponding to the limiting cavities one by one.

[0012] The utility model further comprises a plurality of pressure plates fixedly connected to the side surface of the connecting handle, a connecting column is fixedly provided on the surface of the pressure plate, a plurality of mounting columns are fixedly connected to the surface of the transmission disc, a third return spring is fixedly connected between the mounting column and the corresponding connecting column, and a plurality of limit columns are fixedly connected to the surface of the transmission disc.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model sets a movable pin assembly. When the movable pin contacts the terminal, the terminal squeezes the movable pin, and the first return spring is in a compressed state until the movable pin slides with the terminal port, and the movable pin loses external force squeezing. Under the elastic recovery action of the first return spring, the two movable pins are engaged with the corresponding terminal ports to complete the connection of the instrument signal, thereby meeting the connection and disconnection requirements in actual use, and facilitating signal connection and disconnection and subsequent signal measurement.

[0015] 2. The utility model provides a movable pin assembly and a wiring power mechanism. By rotating the connecting handle, the pressure plate is driven to rotate and squeeze the limit block. The third reset spring is stretched until the pressure plate is separated from the limit block. The transmission disc loses its restriction and rotates under the elastic recovery action of the third reset spring, so that the movable pin assembly rotates synchronously and engages with the wiring port, thereby reducing the direct contact between the staff and the metal part of the signal line, avoiding accidents, and the signal connection and disconnection process is simple to operate.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The figure is a structural diagram of an instrument signal terminal.

[0019] Figure 2 It is a structural schematic diagram of the terminal assembly in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the movable pin assembly in the utility model.

[0021] Figure 4 for Figure 3 Schematic diagram of the longitudinal cross-sectional structure.

[0022] Figure 5 It is a structural schematic diagram of the wiring power mechanism in the utility model.

[0023] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of A.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1-terminal assembly, 101-terminal post, 102-connection port, 2-movable pin assembly, 201-movable pin, 202-connection protection shell, 203-installation cavity, 204-telescopic rod, 205-first return spring, 3-wiring power mechanism, 31-transmission connection assembly, 311-transmission plate, 312-connecting port, 313-transmission rod, 32-power drive assembly, 321-transmission disc, 322-installation base, 323-hollow cylinder, 324-second return spring, 325-limiting block, 326-clamping groove, 327-pressure plate, 328-installation column, 329-third return spring, 33-connecting handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0027] See also Figure 1-6 The utility model is an instrument signal terminal, including a terminal assembly 1, a movable pin assembly 2 and a wiring power mechanism 3. The terminal assembly 1 includes two symmetrically arranged terminal posts 101, and the terminal posts 101 are provided with wiring ports 102 on their surfaces. The wiring ports 102 contain metal connecting conductors; the movable pin assembly 2 is slidably arranged between the two terminal posts 101, and the movable pin assembly 2 includes a symmetrically arranged and retractable movable pin 201, which is a metal conductor. The movable pin 201 is slidably matched with the wiring port 102, and the movable pin 201 is retracted so that it is in contact with the movable pin 2 01 are engaged; the wiring power mechanism 3 is fixedly installed on the side of the movable pin assembly 2, and the wiring power mechanism 3 includes a transmission connection assembly 31 and a power drive assembly 32. The transmission connection assembly 31 is fixedly connected to the side of the movable pin assembly 2, and the transmission connection assembly 31 drives the movable pin assembly 2 to rotate synchronously to realize the disconnection and connection of the instrument signal. The power drive assembly 32 includes an intermittently rotating transmission disc 321. The intermittent movement of the transmission disc 321 realizes the rotation of the movable pin assembly 2 by a certain angle to ensure proper connection and disconnection. The transmission disc 321 and the transmission connection assembly 31 are fixedly connected.

[0028] The movable pin assembly 2 is driven to rotate synchronously by the rotation of the transmission disc 321. When the two terminals 101 of the movable pin 201 are in contact with each other, the movable pin 201 is compressed until the movable pin 201 slides and fits with the wiring port 102. The movable pin 201 returns to its original position and engages with the two terminals 101 to complete the connection of the instrument signal. When the connection needs to be disconnected, the transmission disc 321 is continued to be driven, and the movable pin 201 is compressed again and disengaged from the two terminals 101 as the transmission disc 321 rotates.

[0029] In this implementation case of the utility model, the movable pin assembly 2 also includes a connecting protective shell 202, the surface of the connecting protective shell 202 is an insulator, and an installation cavity 203 is symmetrically opened inside the connecting protective shell 202, and the movable pin 201 is slidingly connected to the connecting protective shell 202; a telescopic rod 204 and a first return spring 205 are fixedly connected between the inner wall of the installation cavity 203 and the movable pin 201, and when the movable pin 201 is squeezed, the telescopic rod 204 and the first return spring 205 are compressed, and the first return spring 205 is sleeved on the outside of the telescopic rod 204, and the movable pin 201 returns to its original position under the elastic recovery of the first return spring 205.

[0030] In this implementation case of the utility model, the transmission connection component 31 includes a transmission plate 311, a connecting port 312 is opened on the surface of the transmission plate 311, and the side surface of the connecting protective shell 201 is fixedly connected to the inner wall of the connecting port 312. The transmission connection component 31 drives the synchronous movement of the movable pin component 2, and a transmission rod 313 is fixedly connected to the surface of the transmission plate 311.

[0031] In this implementation case of the utility model, the power drive component 32 also includes a mounting base 322, a hollow cylinder 323 is fixedly connected to the upper surface of the mounting base 322, and a plurality of limit cavities are opened on the surface of the hollow cylinder 323; a second return spring 324 is fixedly connected to the inside of the limit cavity, and one end of the second return spring 324 is fixedly connected to the limit block 325, and the limit block 325 is a trapezoidal block.

[0032] In this implementation case of the utility model, a connecting handle 33 is rotatably arranged inside the hollow cylinder 323, and rotating the connecting handle 33 provides power. The transmission disc 321 is slidably arranged on the side surface of the connecting handle 33. The transmission rod 313 passes through one end of the hollow cylinder 323 and is fixedly connected to the transmission disc 321. The surface of the transmission disc 321 is provided with a locking groove 326 corresponding to the limiting cavity one by one, and the movement of the transmission disc 321 is limited by the limiting block 325.

[0033] In this implementation case of the utility model, a plurality of pressure plates 327 are fixedly connected to the side surface of the connecting handle 33. One surface of the pressure plate 327 is an inclined slope, which presses the limit block 325 when it contacts the limit block 325. A connecting column is fixedly provided on the surface of the pressure plate 327. A plurality of mounting columns 328 are fixedly connected to the surface of the transmission disc 321. A third reset spring 329 is fixedly connected between the mounting column 328 and the corresponding connecting column, and a plurality of limit columns are fixedly connected to the surface of the transmission disc 321. When the third reset spring 329 elastically recovers, the limit column limits the position of the pressure plate 327, so that the rotation angle of the transmission disc 321 is fixed.

[0034] The working principle of this embodiment is: when connecting the instrument signal, the specific operation process is as follows:

[0035] By rotating the connecting handle 33 clockwise, the pressure plate 327 is rotated clockwise synchronously. During this process, the third return spring 329 is stretched. When the pressure plate 327 contacts the limit block 325, the inclined surface of the pressure plate 327 pushes the limit block 325, and the second return spring 324 is gradually compressed until the upper surface of the limit block 325 leaves the limit opening on the side of the transmission disc 321. At the same time, the pressure plate 327 leaves the limit block 325, the transmission disc 321 loses its restriction, and the transmission disc 321 is pulled to rotate a certain angle under the elastic recovery action of the third return spring 329.

[0036] When the transmission disc 321 rotates, the movable pin assembly 2 is driven to rotate synchronously through the action of the transmission connection assembly 31, so that the movable pin 201 contacts the terminal 101. During the rotation of the movable pin assembly 2, the inclined surface of the movable pin 201 slides along the terminal 101, so that the telescopic rod 204 is compressed and the first reset spring 205 is compressed until the movable pin 201 is in a coaxial position with the terminal port 102. The external force on the movable pin 201 disappears, and under the elastic reset action of the first reset spring 205, the movable pin 201 returns to its original position and engages with the terminal port 102, thereby completing the connection of the instrument signal.

[0037] When it is necessary to disconnect the instrument signal, continue to rotate the connecting handle 33. During the rotation of the transmission disc 321, the movable pin assembly 2 is driven to rotate synchronously. The telescopic rod 204 and the first return spring 205 are compressed again. As the movable pin assembly 2 rotates, it leaves the wiring port 102, thereby completing the disconnection of the instrument signal. After disconnection, it is convenient for the multimeter to detect the current value.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An instrument signal terminal, characterized in that: include: A terminal assembly (1), the terminal assembly (1) comprising two symmetrically arranged terminal posts (101), the surface of the terminal posts (101) being provided with a terminal opening (102); A movable pin assembly (2), the movable pin assembly (2) being slidably disposed between two terminal posts (101), the movable pin assembly (2) comprising symmetrically disposed and retractable movable pins (201), the movable pins (201) being slidably matched with the terminal port (102); A wiring power mechanism (3), the wiring power mechanism (3) is fixedly mounted on the peripheral side of the movable pin assembly (2), the wiring power mechanism (3) comprises a transmission connection assembly (31) and a power drive assembly (32), the transmission connection assembly (31) is fixedly connected to the peripheral side of the movable pin assembly (2), the power drive assembly (32) comprises an intermittently rotating transmission disc (321), and the transmission disc (321) is fixedly connected to the transmission connection assembly (31); The rotation of the transmission disc (321) drives the movable pin assembly (2) to rotate synchronously. When the movable pin (201) and the two connecting posts (101) come into contact, the movable pin (201) is compressed until the movable pin (201) and the connecting port (102) are slidably matched. The movable pin (201) returns to its original position and engages with the two connecting posts (101), completing the connection of the instrument signal. When it is necessary to disconnect, the transmission disc (321) is continuously driven, and the movable pin (201) is compressed again and detaches from the two connecting posts (101) as the transmission disc (321) rotates.

2. The instrument signal terminal according to claim 1, characterized in that: The movable pin assembly (2) further comprises a connection protection shell (202), a mounting cavity (203) is symmetrically provided inside the connection protection shell (202), and the movable pin (201) is slidably connected to the connection protection shell (202).

3. An instrument signal terminal according to claim 2, characterized in that: A telescopic rod (204) and a first return spring (205) are fixedly connected between the inner wall of the installation cavity (203) and the movable pin (201), and the first return spring (205) is sleeved on the outside of the telescopic rod (204).

4. The instrument signal terminal according to claim 3, characterized in that: The transmission connection assembly (31) comprises a transmission plate (311), a communication opening (312) is provided on the surface of the transmission plate (311), a peripheral side surface of the connection protection shell (202) is fixedly connected to the inner wall of the communication opening (312), and a transmission rod (313) is fixedly connected to the surface of the transmission plate (311).

5. The instrument signal terminal according to claim 4, characterized in that: The power drive assembly (32) also includes a mounting base (322), the upper surface of the mounting base (322) is fixedly connected to a hollow cylinder (323), and the surface of the hollow cylinder (323) is provided with a plurality of limit cavities; a second return spring (324) is fixedly connected inside the limit cavity, and one end of the second return spring (324) is fixedly connected to a limit block (325).

6. The instrument signal terminal according to claim 5, characterized in that: A connecting handle (33) is rotatably arranged inside the hollow cylinder (323), the transmission disc (321) is slidably arranged on the peripheral side of the connecting handle (33), the transmission rod (313) passes through one end of the hollow cylinder (323) and is fixedly connected to the transmission disc (321), and a clamping groove (326) corresponding to the limiting cavity is opened on the surface of the transmission disc (321).

7. The instrument signal terminal according to claim 6, characterized in that: A plurality of pressure plates (327) are fixedly connected to the circumferential side surface of the connecting handle (33), a connecting column is fixedly arranged on the surface of the pressure plate (327), a plurality of mounting columns (328) are fixedly connected to the surface of the transmission disc (321), a third return spring (329) is fixedly connected between the mounting columns (328) and the corresponding connecting columns, and a plurality of limit columns are fixedly connected to the surface of the transmission disc (321).

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