CN210089733U - Measuring instrument - Google Patents

Abstract

The utility model provides a measuring instrument, which comprises a processor, a measuring module connected to the processor, a detecting part signal end arranged on the shell of the measuring instrument and connected with the measuring module, and at least one junction box connected to the detecting part signal end, wherein the junction box is provided with at least one crimping terminal module; the junction box is connected to the output end of at least one induction device so as to transmit the output signal of the induction device to the measuring module, and the measuring module obtains the measured value of the corresponding induction device. The utility model discloses the access part of measuring apparatu includes an at least terminal box, and a plurality of terminal box accessible connecting wires are connected and are connected to measuring module through the detection part signal end in order to concatenate the cascade mode, and the access part can once insert a plurality of induction system, different types of induction system even to improve the detection efficiency of measuring apparatu.

Description

Measuring instrument

Technical Field

The utility model belongs to the electrical measurement field relates to a measuring apparatu.

Background

The pressure sensing device, the temperature sensing device, the electrical parameter sensing device and other sensing devices can sense specific physical parameters and are widely applied to the industrial field. In order to ensure the measurement accuracy of different types of sensing devices such as pressure sensing devices, temperature sensing devices, electrical parameter sensing devices, and the like, the sensing devices such as the pressure sensing devices, the temperature sensing devices, the electrical parameter sensing devices, and the like need to be placed in a measuring instrument periodically for detection and verification. During detection and verification, a series of measurement quantities of a set value are usually measured, and for example, a series of temperature values are usually detected to obtain a performance condition of the temperature sensing device.

Because the measurement of measuring a series of setting values takes longer, if the number of sensing devices of the measuring instrument which is accessed to the measuring instrument at one time is less, the time and the labor are consumed, and the detection efficiency is influenced. Moreover, the existing measuring instrument is usually applied to a specific sensing device, and for different types of sensing devices, a special corresponding measuring instrument is required for detection and verification, so that the cost is high, the carrying is inconvenient, and the measuring instrument is not suitable for industrial field application.

SUMMERY OF THE UTILITY MODEL

The utility model provides a measuring apparatu can once insert more induction system, different types' induction system even to improve detection efficiency.

The utility model adopts the following technical scheme:

a surveying instrument, comprising:

a processor (500);

a measurement module (600) connected to the processor (500);

the detection part signal end is arranged on the measuring instrument shell and connected with the measuring module;

at least one terminal block (400) connected to the signal terminals of the detection portion, each terminal block being provided with at least one crimping terminal module (200);

the junction box (400) is connected to the output end of at least one induction device so as to transmit the output signal of the induction device to the measuring module (600), and the measuring module obtains the measured value of the corresponding induction device.

In the measuring instrument, the junction box (400) is provided with an access part signal end, and the access part signal end is connected to the detection part signal end in a wired connection, wireless connection or direct plug-in connection mode.

In the above-mentioned measuring instrument, the sensing device includes any one or at least two of a temperature sensing device, a pressure sensing device, a current sensing device, a voltage sensing device, a frequency sensing device, and a switch sensing device.

In the measuring instrument, the signal end of the detection part is at least one plug-in end (700), the signal end of the access part is at least one wiring port (405), and any plug-in end (700) is connected with or directly plugged into any wiring port (405) of a junction box (400) through a connecting wire.

In the measuring instrument, the signal end of the detection part is at least one plug-in end (700), any plug-in end (700) is connected with a plurality of junction boxes, and the plurality of junction boxes are sequentially connected in series through connecting wires.

In the measuring instrument, the signal end of the access part of the junction boxes (400) is a wiring port, two wiring ports are arranged, namely a first wiring port (406) and a second wiring port (407), the first wiring port (406) of any junction box (400) is connected to the insertion end (700), and the second wiring port (407) of two adjacent junction boxes is connected with the first wiring port (406) of the junction box which is not accessed to the insertion end (700) through a connecting wire.

In the above-described measuring instrument, the junction box (400) includes a circuit board (11), and the crimp terminal module (200) is electrically connected to the circuit board (11).

In the measuring instrument, the junction box (400) is provided with at least one common binding post (300) for grounding, and the common binding post (300) is electrically connected to the circuit board (11).

In the above measuring instrument, the crimp terminal module (200) includes at least one crimp terminal including:

a housing (00);

the upper part of the pressing button (03) extends out of a first opening (012) arranged on the shell (00), and the lower part of the pressing button (03) is positioned in the shell (00);

the crimping mechanism is provided with an openable and closable inserting port (010), the crimping mechanism is positioned in the shell (00) and is in contact with the lower part of the pressing button (03), and the shell (00) is provided with a second opening (013) corresponding to the inserting port (010);

when the button (03) is pressed longitudinally, the socket (010) is opened, so that the terminal of the sensing element is inserted into the socket from the second opening (013).

The above-mentioned measuring apparatu still includes:

the touch display is connected with the processor (500) and displays the measured value of the sensing device connected to the junction box (400) according to the instruction sent by the processor (500); and

a memory module connected to the processor (500) and storing the measured values of the sensing devices connected to the junction box (400) according to the instructions issued by the processor (500).

The utility model discloses a measuring instrument includes detection part and access part, the detection part is equipped with detection part signal end, the access part includes at least one junction box, the junction box is equipped with access part signal end, the access part signal end of access part and the detection part signal end of detection part can be connected through wired connection, wireless connection or direct plug-in connection; the terminal box is equipped with an at least crimping terminal module, can insert a plurality of induction system simultaneously, and a plurality of induction system's output signal transmission reachs the measured value to measurement module to realize a plurality of induction system, the induction system of different grade type detects simultaneously even, with improvement detection efficiency.

Drawings

Fig. 1A is a block diagram of the measuring instrument of the present invention;

fig. 1B is a block diagram of an embodiment of the measuring apparatus of the present invention;

fig. 1C is a schematic view of the internal structure of the junction box of the measuring instrument of the present invention;

fig. 1D is a schematic diagram of a connection mode of a detection part and an access part of the measuring apparatus according to the present invention;

fig. 1E is a schematic diagram of a connection mode two of the detection part and the access part of the measuring apparatus of the present invention;

FIG. 1F is a schematic view of one connection of the junction box to the sensing device;

fig. 2A is a perspective view of a first embodiment of a crimp terminal according to the present invention;

fig. 2B is an exploded view of a first embodiment of the crimp terminal according to the present invention;

fig. 2C is a schematic view of an installation structure of each component in the first embodiment of the crimp terminal according to the present invention;

fig. 2D is a schematic view of the crimp terminal according to the embodiment of the present invention after the press button is pressed;

fig. 2E is a schematic view of the crimp terminal according to the embodiment of the present invention in a state where the pressing button is released and the spade-shaped plug is inserted;

fig. 3 is an exploded view of a second embodiment of the crimp terminal according to the present invention;

fig. 4 is an exploded view of a third embodiment of the crimp terminal according to the present invention;

fig. 5A is an exploded view of a fourth embodiment of the crimp terminal according to the present invention;

FIG. 5B is a schematic view of a press block and a press button mounting structure;

fig. 5C is a schematic view of the crimp terminal according to the present invention after the pressing button is pressed for four times;

fig. 5D is a schematic view of the crimp terminal according to the present invention in a state after the pressing button is released and the spade-shaped plug is inserted;

fig. 6A is a perspective view of the crimping terminal module according to the embodiment of the present invention;

fig. 6B is a first exploded view of the crimping terminal module according to an embodiment of the present invention;

figure 6C is an exploded view of the crimping terminal module of the present invention

Fig. 6D is an elevation view of an embodiment of a crimped terminal module of the present invention;

FIG. 6E is a cross-sectional view taken along line A-A of FIG. 6D;

fig. 6F is a schematic view of the Min-TC terminal being inserted into the crimp terminal module.

The main labels are as follows:

1000: a gauge, 1001: detection portion, 1002: an access portion;

200: crimping the terminal module; 400: a junction box; 300: a common wiring terminal; 500: a processor; 600: a measurement module; 700: a plug end; 800: temperature sensing device, 900: a pressure sensing device; 405: wire connection port, 406: a first wiring port; 407: a second wiring port;

100/101/102/103: a crimp terminal;

00: a housing, 01: face cover, 011: buckle, 012: first opening, 013: a second opening; 02: inferior shell, 021: third opening, 022: mounting holes; 010: an interface;

03: press button, 031: press button ramp, 032: press button arc, 033: press button limiting hole, 034: a wiring jack;

04: a conductive post; 05: a first adhesive sheet, 051: a protrusion; 06: a first elastic member; 07: color codes;

08: second fitting piece, 081: a first inclined plane;

09: a limiting block; 10: a second elastic member; 11: a circuit board; 12: a screw; 13: a panel; 14: compensation plate, 15: a compensation plate support;

17: crimping block, 171: folded-up end, 172: rotating shaft, 173: pressing the column; 18: a C-shaped spring plate;

001: banana plugs; 002: a spade-shaped plug; 003: bare wires; 004: a Min-TC plug;

005: pressing the button movement direction; 006: the moving direction of the second attaching sheet; 007: the rotation direction of the crimping mechanism;

1: a first terminal, 2: terminal two, 3: terminal three, 4: and a fourth terminal.

Detailed Description

When detecting and verifying different types of sensing devices such as pressure sensing devices, temperature sensing devices and electrical parameter sensing devices in batches aiming at the existing measuring instruments, special measuring instruments are usually needed, and the measuring instruments are not suitable for simultaneous access measurement, are time-consuming and labor-consuming, and have low detection efficiency and high cost. In order to solve the above problem, the utility model provides a measuring instrument, this measuring instrument include test section and access part, wherein, test section includes treater, the measuring module who is connected with the treater electricity and the test section signal end of being connected with measuring module, and access part is connected to at least a terminal box of test section signal end, terminal box integration have an at least crimping terminal module, and more induction system can once be inserted to the terminal box, different kinds's induction system even to improve the detection efficiency of measuring instrument.

The following describes the measuring instrument in detail with reference to the specific embodiments and the attached drawings.

As shown in fig. 1A to fig. 1F, an embodiment of the present invention provides a measuring instrument, including:

a processor 500;

a measurement module 600 connected to the processor;

the detection part signal end is arranged on the measuring instrument shell and connected with the measuring module;

at least one terminal block 400 connected to the signal terminals of the detection part, each terminal block having at least one crimping terminal module 200 (see fig. 2A to 6F) integrated thereon;

the junction box is connected to an output end of at least one sensing device to transmit an output signal of the sensing device to the measuring module 600, and the measuring module 600 obtains a measurement value of the corresponding sensing device.

In the above structure (see fig. 1A and 1B), the detecting portion 1001 of the measuring instrument 1000 includes the processor 500, the measuring module 600 and the detecting portion signal terminal, the accessing portion 1002 includes at least one junction box 400, the junction box 400 includes the circuit board 11 and at least one crimping terminal module 200 and an accessing portion signal terminal electrically connected to the circuit board 11, the detecting portion signal terminal of the detecting portion 1001 and the accessing portion signal terminal of the accessing portion 1002 can communicate in a wired manner (e.g., connected by a connecting wire), a wireless manner (e.g., Wifi, bluetooth, etc.). Preferably, the signal terminal of the detection portion 1001 is at least one plug terminal 700, the signal terminal of the connection portion of the terminal box 400 is at least one connection port 405, the connection port 405 of the terminal box 400 is connected to the plug terminal 700 through a connection wire, or a connection board is plugged into the plug terminal 700, and the connection port 405 of the terminal box 400 is electrically connected to the plug terminal 700 through the connection board through a connection wire or a direct plugging manner.

In another preferred embodiment, the signal end of the detection portion 1001 is at least one insertion terminal 700, the access portion 1002 includes a plurality of junction boxes, the junction box 400 includes two junction ports, namely a first junction port 406 and a second junction port 407, the first junction port 406 of any junction box 400 is connected to the insertion terminal 700, and the second junction port 407 of two adjacent junction boxes is connected with the first junction port 406 of a junction box which is not connected to the insertion terminal 700 through a connecting wire, so that series connection and cascade connection of the plurality of junction boxes are realized, more sensing devices are connected, one-time batch detection is realized, and the detection efficiency is greatly improved.

In one embodiment, the terminal box 400 is integrated with a plurality of crimping terminal modules 200, and can be simultaneously connected to a plurality of sensing devices, and signals of the plurality of sensing devices are transmitted to the measuring module to obtain measured values, so that the plurality of sensing devices can be simultaneously detected, and the detection efficiency can be improved. The crimping terminal module of the same junction box can be connected with the same type of sensing device and can also be connected with different types of sensing devices.

In one embodiment, the sensing means comprises any one of a temperature sensing means, a pressure sensing means, a current sensing means, a voltage sensing means, a frequency sensing means and a switch sensing means, or a combination of at least two thereof.

The temperature sensing device can be a temperature sensor, such as a thermal resistor and a thermocouple; the pressure sensing device may be a pressure sensor; the current induction device can be an ammeter, a universal meter and the like; the voltage induction device can be a voltmeter, a universal meter and the like; the frequency sensing device may be a frequency sensor, and the switch sensing device may be a temperature switch, a pressure switch, or the like.

In this embodiment, the measuring instrument can detect any one of a temperature sensing device, a pressure sensing device, a current sensing device, a voltage sensing device, a frequency sensing device and a switch sensing device, and has a wider application range, so that the measuring instrument is applied to more application scenes; the measuring instrument can also detect the combination of at least two of a temperature sensing device, a pressure sensing device, a current sensing device, a voltage sensing device, a frequency sensing device and a switch sensing device, so that the mixed cascade measurement of a plurality of parameters is realized.

In one embodiment, the crimp terminal module 200 includes at least one crimp terminal, each crimp terminal including:

a housing;

the upper part of the pressing button extends out of a first opening arranged in the shell, and the lower part of the pressing button is positioned in the shell;

the crimping mechanism is provided with an openable and closable inserting port, is positioned in the shell and is in contact with the lower part of the pressing button, and the shell is provided with a second opening corresponding to the inserting port;

when the button is pressed longitudinally, the socket is opened, so that the terminal of the sensing element is inserted into the socket from the second opening.

In one embodiment, the meter 1000 further comprises a touch display coupled to the processor 500 that displays measurements from the sensing device coupled to the meter's access portion 1002 in accordance with instructions from the processor 500;

and

a memory module connected to the processor 500 stores the measured values of the sensing devices connected to the connection portion 1002 of the meter according to the instructions issued by the processor 500.

Crimping terminal and crimping terminal module

To current binding post easily produce contact potential, twist and insert easy friction themogenesis influence and detect the precision, and current binding post can not satisfy different grade type wire terminal access needs, operate inconveniently etc. not enough, the utility model provides a can insert the crimping terminal of the wire that has different wiring end specifications, crimping terminal module, this crimping terminal is through pressing down the button, the drive interface is opened, so that sensing element's wiring end inserts this interface from the second opening on the casing that corresponds with the interface, perhaps sensing element's wiring end is direct to insert from the first opening part of casing through the wiring jack according to the button top, insert and press the chamber that holds that the button is inside to set up, compare traditional mode of twisting, reduce the themogenesis, it is more convenient to use.

The crimping terminal comprises a shell, a pressing button and a crimping mechanism positioned in the shell, wherein the crimping mechanism is provided with an openable insertion port, the upper part of the pressing button extends out of a first opening arranged on the shell, and the lower part of the pressing button is positioned in the shell; the crimping mechanism is contacted with the lower part of the pressing button, and the shell is provided with a second opening corresponding to the plug interface; when the upper part of the pressing button is pressed longitudinally, the socket is opened, so that the terminal of the sensing element is inserted into the socket from the second opening, and frictional heat generation is reduced.

Example one

The utility model discloses crimping terminal is used for connecting the temperature sensing element of the various dimensions that test end wire has. Referring to fig. 2A to 2C, the crimp terminal 100 includes a housing 00, a pressing button 03 and a crimping mechanism, in this embodiment, the crimping mechanism includes a first attaching piece 05 and a second attaching piece 08, the attaching portion of the first attaching piece 05 and the second attaching piece forms an openable and closable insertion opening 010, wherein the housing 00 is formed by fastening a face cover 01 and a lower housing 02 together, the face cover 01 is provided with a first opening 012 and a second opening 013, the pressing button 03 is located in the housing and the upper portion thereof protrudes from the first opening 012, the insertion opening 010 formed by the first attaching piece 05 and the second attaching piece 08 is located in the housing 00 and corresponds to the second opening 013 of the housing 00, and the second attaching piece 08 contacts with the lower portion of the pressing button 03.

Wherein, the top of pressing button 03 is equipped with wiring jack 034, the middle part is provided with the chamber that holds that is used for holding sensing element's wiring end, wiring jack 034 with hold the chamber and be linked together, it is provided with electrically conducts the post 04 to hold the intracavity, insert the sensing element's that presses button 03 to hold in the chamber wiring end and electrically connect with electrically conducting post 04, the inferior valve 02 bottom of casing 00 is provided with the opening, it wears out and holds the chamber and stretches out from the bottom opening part of casing 00 to electrically connect the circuit board below electrically conducting post 04 and casing 00. In this embodiment, the conductive posts 04 may be banana sockets (used with terminals having banana plugs) with conductive function.

The crimp terminal 100 is further provided with a first elastic member 06, the first elastic member 06 is located between the pressing button 03 and the bottom of the lower shell 02 of the housing 00 and is used for providing an elastic force for resetting the pressing button 03, in this embodiment, the first elastic member 06 is a spring, and the spring is sleeved on a portion of the conductive column 04 that penetrates out of the accommodating cavity of the pressing button 04.

The first bonding sheet 05 is made of a metal material, and the first bonding sheet 05 is connected with the conductive column 04. In this embodiment, the first attaching piece 05 is a bent piece having a vertical wall connected to a horizontal wall, a connection interface 010 is formed at a joint of the vertical wall of the first attaching piece and the second attaching piece, a through hole is formed in the horizontal wall of the first attaching piece 05, the conductive post 04 passes through the through hole, and at this time, the first elastic member 06 (a spring in this embodiment) is defined between the pressing button 03 and the first attaching piece 05.

The first laminating piece 05 of the vertical both edges syntropy bending parcel of second laminating piece 08, the both edges after the second laminating piece 08 is crooked and the lower part sliding contact of pressing button 03 for when the pressing button reciprocates, the second laminating piece 08 horizontal migration, the second laminating piece 08 is kept away from with the perpendicular wall of first laminating piece 05, and then interface 010 is opened. In this embodiment, the two bent edges of the second abutting piece 08 are respectively provided with an upward first inclined surface 081 or a first arc surface (not shown), a downward button pressing inclined surface 031 is arranged at a position, corresponding to the first inclined surface 081 or the first arc surface (not shown), of the lower portion of the button 03, and the first inclined surface 081 or the second arc surface is in sliding contact with the button pressing inclined surface 031.

The crimp terminal 100 further includes an elastic mechanism, which is located between the second engaging piece 08 and the inner wall of the housing 00 and is used for providing a resetting elastic force for the second engaging piece 08. The elastic mechanism comprises a limiting block 09 and a second elastic member 10, in this embodiment, the second elastic member 10 may be a spring, the limiting block 09 is provided with a plurality of round holes (in the embodiment shown in fig. 2B and fig. 2C, the limiting block 09 is provided with two round holes) for respectively sleeving the second elastic member (the spring in this embodiment) 10, the hole wall guides the second elastic member 10, and small protrusions are arranged on the hole walls of the two round holes for limiting the second elastic member 10 to prevent the second elastic member 10 from falling off; the limiting block 09 is fixedly mounted at the back of the second attaching piece 08, the second elastic member 10 is located between the second attaching piece 08 and the wall of the housing 00, and a space is formed between the limiting block 09 and the wall of the housing 00. Preferably, in this embodiment, an arc protrusion 051 is arranged at one side of the vertical wall of the first attaching piece 05, which is attached to the second attaching piece 08, and the arc protrusion 051 is located in the plug interface 010, so that the terminal of the sensing element can be directly inserted when the plug interface 010 is not opened.

The first bonding sheet 05 and the conductive column 04 of the crimp terminal 100 are both made of tellurium copper alloy with a metal coating, the tellurium copper alloy has excellent electric conductivity and heat conductivity, and after gold plating, the effects of corrosion resistance and wear resistance are achieved, so that the contact potential can be further reduced. The first fitting piece 05 may be a block metal, which has a heat capacity tank effect and a rapid heat soaking effect on the frictional heat generated when the terminals are connected.

Referring to fig. 2A to 2C, the crimp terminal 100 further includes a color code 07, the color code 07 is installed at an upper end opening of the pressing button 03, and the color code 07 is marked with different colors, for example, a red color code marks a positive electrode, a black color code marks a negative electrode, and a green color code marks a ground wire.

When the crimp terminal 100 is operated, if the terminal of the sensing element with the banana plug 001 is plugged, the banana plug 001 is directly inserted into the accommodating cavity of the pressing button 03 through the color code 07 and is in close contact with the conductive post (in this embodiment, the banana jack) 04; if the terminal of the sensing element with the bare wire 002 or the spade plug 003 is plugged, as shown in fig. 2D, the pressing button 03 is pressed, the first elastic member 06 is compressed, the pressing button inclined plane 031 moves downward, and further the first inclined plane 081 or the first arc surface in contact with the pressing button inclined plane is pressed, so that the second elastic member 10 is compressed, the second abutting piece 08 moves horizontally rightward (right side in fig. 2D) under the action of the pressing button inclined plane 031, so that the plugging port 010 between the vertical wall of the first abutting piece 05 and the second abutting piece 08 is opened (enlarged), and at this time, the bare wire 002 or the spade plug 003 is inserted into the plugging port 010 through the second opening of the housing 00; as shown in fig. 2E, when the pressing button 03 is released, the second engaging piece 08 moves leftward (leftward in fig. 2E) under the action of the second elastic member 10, and the pressing button 03 moves upward under the action of the first elastic member 06, so that the bare wire 002 or the spade plug 003 is firmly held in the insertion opening 010 formed by the vertical wall of the first engaging piece 05 and the second engaging piece 08 (at this time, the bare wire 002 or the spade plug 003 is subjected to the double elastic force). Compared with the conventional screwing method, the crimping method of the crimping terminal 100 can reduce friction and heat generated by friction, thereby achieving the effect of reducing the contact potential between the terminal of the sensing element and the crimping terminal.

Example two

As shown in fig. 3, the crimp terminal 101 according to the second embodiment is a modification of the crimp terminal 100 according to the first embodiment, and the same parts as the crimp terminal 100 according to the first embodiment are not described again here. The crimp terminal 101 of this embodiment is different from the crimp terminal 100 of the first embodiment in that two button pressing inclined surfaces 031 of the pressing button 03 are replaced by two button pressing arc surfaces 032, the button pressing arc surfaces 032 are vertically arranged, the contact area of the button pressing inclined surfaces 032 and the second inclined surfaces 081 is small (line contact), and at this time, the second attaching piece 08 can be thickened to prevent the second attaching piece 08 from deforming. Of course, the button-pressing slope 031 of the pressing button 03 may be replaced by an end surface having another shape, as long as the end surface of the pressing button 03 is in contact with the first slope 081, and the vertical movement of the pressing button 03 can be converted into the horizontal movement of the second contact piece 08.

EXAMPLE III

As shown in fig. 4, a crimp terminal 102 according to the third embodiment is an improvement of the crimp terminal 100 according to the first embodiment or the second embodiment, and the same parts as the crimp terminal 100 according to the first embodiment or the second embodiment are not repeated herein. The crimp terminal 102 of this embodiment is different from the crimp terminal 100 of the first embodiment or the crimp terminal 101 of the second embodiment in that the elastic mechanism is a C-shaped elastic piece 18, the C-shaped elastic piece 18 is located between the second attaching piece 08 and the inner wall of the housing 00 (on the right side of the second attaching piece 08 in fig. 4), at least one end of a C-shaped opening of the C-shaped elastic piece 18 is supported on the second attaching piece 08, and a C-shaped closed end surface is in contact with the inner wall of the housing 00.

When the crimp terminal 102 works, if a terminal of a sensing element with a bare wire 002 or a shovel-shaped plug 003 is plugged, the pressing button 03 is pressed, the first elastic member 06 is compressed, so that the pressing button inclined plane 031 or the pressing button arc surface 032 moves downwards, and then the first inclined plane 081 or the first arc surface in contact with the pressing button is pressed, so that the C-shaped elastic sheet 18 is extended and the radian is reduced, the second abutting sheet 08 horizontally moves under the action of the pressing button inclined plane 031, so that the plugging port 010 between the vertical wall of the first abutting sheet 05 and the second abutting sheet 08 is opened, and at this time, the bare wire 002 or the shovel-shaped plug 003 is inserted into the plugging port 010 through the second opening in the housing 00; the pressing button 03 is loosened, the radian of the C-shaped elastic piece 18 is increased (the original radian is recovered), the second attaching piece 08 horizontally and reversely moves under the elastic action of the C-shaped elastic piece 18, and meanwhile, the pressing button 03 moves upwards under the action of the first elastic piece 06, so that the bare wire 002 or the shovel-shaped plug 003 is firmly clamped in the jack 010 between the vertical wall of the first attaching piece 05 and the second attaching piece 08 (at this time, the bare wire 002 or the shovel-shaped plug 003 is under the double elastic action). Compared with the conventional screwing method, the crimping method of the crimping terminal 102 can also reduce friction and reduce heat generated by friction, thereby achieving the effect of reducing the contact potential between the plug and the terminal.

Example four

Referring to fig. 5A to 5C, a structure of a crimp terminal 103 according to a fourth embodiment is illustrated, and the crimp terminal 103 according to the fourth embodiment is different from the above-described crimp terminal in a structure of the second contact piece 08, as illustrated in fig. 5B, the second contact piece is an S-shaped crimp block 17, the crimp block 17 is disposed between a pressing knob 03 and a vertical wall of the first contact piece 05, a lower portion of the pressing knob 03 is rotatably connected to an S-shaped folded-down end of the crimp block 17, and the crimp block 17 is rotatable along a rotating shaft 172 provided at the folded-down end. The compression joint block 17 is provided with a vertical compression joint plate, the rotating shaft 172 is arranged at the bottom of the compression joint plate, and the upper folding end 171 of the compression joint block 17 is used as a compression edge to form a socket 010 at the contact position with the vertical wall of the first attaching piece 05; the end of the downward folded end of the press-connecting block 17 is provided with a press post 173, the press post 173 is inserted into a press button limiting hole 033 arranged at the lower part of the press button 03, and the press post 173 can move in the press button limiting hole 033. In this embodiment, the rotating shaft 172 is installed in the installation hole 022 provided in the side wall of the housing 00, and the crimping block 17 can rotate along the rotating shaft 172 thereof.

When the crimp terminal 103 is operated, if the terminal of the sensor element having the bare wire 002 or the spade plug 003 is inserted, as shown in fig. 5C, the pressing button 03 is pressed, the first elastic member 06 is compressed, so that the pressing button 03 moves downward, and the pressing post 173 of the crimp block 17 is further driven to move downward (the pressing button limiting hole 033 is an elliptical hole with a movement space, and the pressing post 173 can move in the pressing button limiting hole 033 to meet the purpose that the crimp block 17 can rotate along the rotating shaft 172), so that the crimp block 17 rotates along the rotating shaft 172, so that the insertion opening 010 between the folded end (pressing edge) 171 and the vertical wall of the first attaching piece 05 is opened, and at this time, the bare wire 002 or the spade plug 003 is inserted into the insertion opening 010 through the second opening 013 of the housing 00; as shown in fig. 5D, when the pressing button 03 is released, the pressing button 03 moves upward under the action of the first elastic member 06, and drives the pressing post 173 to move upward (and the pressing post 173 moves in the pressing button limiting hole 033), and the crimping block 17 rotates around the rotating shaft 172, so that the bare wire 002 or the spade plug 003 is firmly clamped in the insertion opening 010 between the vertical wall of the first fitting piece 05 and the folded-up end 171 of the crimping block 17. Compared with the conventional screwing mode, the crimping mode of the crimping terminal 103 can also reduce friction and reduce heat generated by friction, thereby realizing the effect of reducing the contact potential between the plug and the terminal.

Fig. 6A to 6F show a structure of a crimping terminal module 200, the crimping terminal module 200 includes at least two crimping terminals, the crimping terminals of the crimping terminal module 200 may be one or two combinations of the above-mentioned crimping terminals 100, 101, 102, 103, and the housings of the crimping terminals are integrated to form a housing of the crimping terminal module.

In the embodiment shown in fig. 6B, each of the crimping terminals further includes a temperature sensor, and the temperature sensor senses the temperature of the first attaching piece 05, and further senses the temperature of the sensing element inserted into the wiring insertion hole 034 or the insertion hole 010, so as to compensate the detected temperature difference potential. In order to facilitate the installation and wiring of the temperature sensor, each crimping terminal further comprises a compensation plate 14 and a compensation plate support 15, a metal guide sheet is arranged on the compensation plate 14, the compensation plate 14 is an insulator with good heat conductivity, the metal guide sheet is in contact with the first attaching sheet 05, and the temperature sensor senses the temperature of the first attaching sheet 05 by sensing the temperature of the metal guide sheet. In one embodiment, the sensor is not connected to the metal guide plate near the metal plate, and the sensor detects the temperature of the air near the metal plate, thereby sensing the temperature of the first engaging piece 05. The bottom of the casing 00 is provided with a third opening 021 corresponding to the position of the first attaching piece 05, the compensation plate 14 is installed at the outer side of the bottom of the casing 00, the metal guide piece on the compensation plate is contacted with the first attaching piece 05 through the third opening 021, the compensation plate support 15 is buckled with the compensation plate 14, and a terminal electrically connected with the temperature sensor can extend out of a through hole arranged in the compensation plate support 15 so as to be connected into the circuit board 11. The metal guide plate and the temperature sensor are respectively arranged on the upper surface and the lower surface of the compensation plate 14.

Referring to fig. 6A to 6F, the crimped terminal module 200 in this embodiment is formed by combining four crimped terminals, wherein the terminals 1, 2, 3 and 4 are respectively formed by extending the upper portion of the pressing button 03 of the four crimped terminals out of the first opening provided on the housing, the second openings provided on the housing are respectively provided on both sides, the second openings are respectively aligned with the insertion ports 010 of the crimped terminals, and the two second openings on each side can be used for inserting the terminals of the sensor element having the Min-TC plug (see fig. 6F). In this embodiment, the first abutting pieces 05 of the respective crimp terminals are respectively in contact with the metal guide pieces provided on the compensation plate 14. In one embodiment, the metal sheets are spaced closely to each other while the metal sheets are relatively close to, but not connected to, the sensor which senses the temperature of the air in the vicinity of the metal sheets, thereby sensing the temperature of the metal sheets.

As shown in fig. 6F, two buckles 011 are arranged on the housing of the crimping terminal module 200, and a panel 13 can be directly buckled on the housing through the buckles 011, so that the panel 13 can be conveniently mounted and detached without falling off.

The crimp terminal module 200 may be used to connect a group of four-wire or three-wire thermocouples, or may be used to connect two groups of two-wire thermocouples or thermal resistors, for example, as shown in fig. 6D and 6F, the multifunctional terminal one 1, the terminal two 2, and the terminals three 3 and four 4 may be combined in pairs to connect two-wire thermocouples or thermal resistors, and which two combinations can achieve a predetermined detection function is determined according to the circuit arrangement of the circuit board 11 and the connection of each terminal to the circuit board 11. The specific circuit configuration of the circuit board 11 can be realized by using an existing detection circuit board, which is not the focus of the present application and will not be discussed here.

The above embodiments are only examples of the crimping terminal module formed by combining the crimping terminals 100, and similarly, any one or more of the crimping terminals 100, 101, 102, and 103 can be combined into the crimping terminal module with the same function, and the structure is basically the same, and is not described again here.

Junction box and measuring instrument

The utility model discloses but crimping terminal independent assortment is the crimping terminal module 200 of multiple specification, and crimping terminal module 200 can be applied to terminal box 400, and terminal box 400 includes a crimping terminal module 200 at least.

One embodiment of the terminal block 400 is shown in fig. 1C, and includes a plurality of crimping terminal modules 200, a panel 13 is disposed above and fixed to a circuit board 11, the plurality of crimping terminal modules 200 are mounted on the panel 13 and connected to the circuit board 11, respectively, a plurality of common terminals 300 are connected to the circuit board 11 for grounding, and the circuit board 11 is provided with at least one wiring port electrically connected to a processor 500. The crimping terminal module 200 may be composed of terminals with different specifications and purposes.

Based on the limitation of the resource of the circuit board 11, the operation mode of the crimping terminal module 200 of the terminal box 200 in this embodiment is the polling mode, that is, the signal output circuit of each crimping terminal module is connected to a relay switch arranged on the circuit board 11, and the on/off of the output circuit corresponding to the crimping terminal module 200 is controlled by the relay switch, so that the crimping terminal module 200 occupies the resource of the circuit board 11 according to a certain logic control sequence.

In one embodiment, the circuit board 11 is provided with a first connection port 406 for data communication with the processor 500 and a second connection port 407 for the serial terminal block 400. The junction box 400 is a box structure (see fig. 1C), a plurality of crimping terminal modules 200 installed on the panel 13 and the circuit board 11 are integrally arranged in the box, a first wiring port 406 and a second wiring port 407 are located on the box, through holes are formed in corresponding positions of the first wiring port 406 and the second wiring port 407, so that the first wiring port 406 and the second wiring port 407 are externally connected with corresponding lead terminals, a wiring port cover is further arranged in the through hole, the wiring port cover is installed on the box, and can be opened and fastened and closed relative to overturning, and when the junction box is not used, the first wiring port 406 and the second wiring port 407 are sealed and protected by closing the wiring.

The measuring instrument 1000 comprises a detecting part 1001 and an access part 1002, referring to fig. 1B, the detecting part 1001 comprises a processor 500, a measuring module 600 electrically connected to the processor 500, and at least one detecting part signal terminal electrically connected to the measuring module 600, the measuring module is provided with an amplifying circuit, a filtering circuit and the like for processing and measuring the received electric signal of the induction device, converting the processed electric signal into a digital signal and transmitting the digital signal to the processor 500 for analysis; the inserting portion 1002 includes at least one terminal block 400, and the terminal block 400 includes a circuit board 11, and at least one crimping terminal module 200 electrically connected to the circuit board 11 and inserting portion signal terminals through which the crimping terminal module 200 is signal-connected with the detecting portion signal terminals of the detecting portion 1001. Preferably, the signal end of the access portion of the junction box 400 is a wiring port, the wiring port is provided with two, namely a first wiring port 406 and a second wiring port 407, and the junction box 400 cooperates with the detection portion 1001 of the measuring instrument to form the measuring instrument 1000 of the present invention, referring to fig. 1D and fig. 1E, the detection portion 1001 is used for performing data interaction with the junction box 400, namely receiving detection data of each sensing device accessed by the junction box 400, and sending a control command to the circuit board 11 of the junction box 400 to control the on-off of the relay switch on the circuit board 11, so as to realize the inspection work of the crimping terminal module 200; the detecting part 1001 is further provided with a display screen, and the processor 500 obtains result data according to the obtained electrical parameter of the sensing device and displays the obtained result data on the display screen.

In one embodiment, the signal terminal of the detection part 1001 of the measuring instrument 1000 is a plug terminal 700, and the plug terminal 700 can be connected to the connection port of the junction box 400 through a connection wire; the plug terminal 700 can also be connected to a connection board, through which it is directly plugged into the connection port of the junction box 400.

The above components are assembled according to the connection relationship to form the junction box 400 and the measuring instrument 1000 of the utility model, the crimping terminal module 200 of the junction box 400 can be connected to the connecting terminal of the induction device in a button mode, compared with the traditional screwing mode, the heat generated by friction can be reduced, and the contact potential of the connecting terminal of the induction device is reduced; the compensation plate is arranged in the crimping terminal module 200, so that the temperature difference potential is compensated, and the detection accuracy is improved; the crimping terminal modules of the junction box 400 of the utility model work in a polling mode, so that the automation operation is easy to realize, and the working efficiency of batch detection is improved; the junction box 400 can be used alone, and can also be detachably mounted on the detection part 1001 of the measuring instrument, so that the use is flexible.

Taking the signal end of the detection part 1001 of the measurement instrument 1000 as the plug-in end 700 and the signal end of the connection part 1002 (junction box) as the connection port as an example, there are two connection methods of the junction box 400 and the detection part 1001:

in one connection, as shown in fig. 1D, the first connection port 406 of the terminal box 400 is connected to the plug terminal 700 of the detecting portion 1001 through a connection wire, or the plug terminal 700 is connected to a connection board, and a plug matched with the first connection port 406 of the terminal box 400 is provided on the connection board, and the plug is plugged with the first connection port 406. The junction box 400 operates in a polling mode.

Another connection method is shown in fig. 1E, the first connection port 406 of the terminal block 400 is connected to the plug terminal 700 of the detecting portion 1001 through a connection wire, and the second connection port 407 of the terminal block 400 is electrically connected to the first connection port 406 of another terminal block 400 through a connection wire, and in the same manner, a plurality of terminal blocks 400 may be connected in series in sequence. Considering the limited configuration resources of the processor 500 in the detection part 1001 and the requirement of the detection precision, the number of the junction boxes 400 connected in series in the detection part 1001 is generally not more than three. When the terminal box 400 connected in series with the detection part 1001 works in a polling mode, the processor 500 transmits the control command to the terminal box directly connected with the terminal box, then transmits the control command to the next terminal box through the second wiring port 407 of the terminal box, and sequentially transmits the control command to the last terminal box, and controls the relay switches on the circuit boards 11 of the terminal boxes through the control logic set by the processor to control the working state of each crimping terminal module 200.

The working mode is particularly suitable for batch detection of the induction devices with different measuring ranges or precisions, so that the detection efficiency is improved, and the detection cost is reduced.

The plurality of crimped terminal modules 200 in the terminal block 400 are used to plug in the same type or different types of induction devices. Specifically, one junction box 400 may be connected to a plurality of different types of sensing devices, which may be two or more of a temperature sensing device, a pressure sensing device, a current sensing device, a voltage sensing device, a frequency sensing device, and a switch sensing device. The temperature sensing device can be a temperature sensor, such as a thermal resistor and a thermocouple; the pressure sensing device may be a pressure sensor; the current sensing device can be a transmitter (current output), a universal meter (current output) and the like; the voltage sensing device can be a transmitter (voltage output), a universal meter (voltage output) and the like; the frequency sensing device may be a frequency sensor and the switch sensing device may be a temperature switch, a pressure switch, etc.

Fig. 1F shows an example of the same terminal block 400 simultaneously connected to a temperature sensing device (thermal resistor) 800 and a pressure sensing device 900. The output terminals of the temperature sensing device (thermal resistor) 800 and the pressure sensing device 900 are connected to the crimping terminal module 200 of the terminal block 400, respectively. The junction box 400 is connected to the measuring module 600 and the processor 500 of the detecting part by connecting wires, and the output signal of the sensing device is transmitted to the processor 500 after being measured by the measuring module 600. The user can set the junction box 400 and the crimping terminal module 200 of the access detection part 1001 through the touch display, and the measurement module generally has an amplifying circuit, a filter circuit, etc. for processing and measuring the received electrical signal, and converting the processed electrical signal into a digital signal to be transmitted to the processor 500 for analysis. Further, the measurement data result and the analysis result obtained by the processor 500 are sent to the touch display for displaying.

It will be understood by those skilled in the art that these examples or embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention, and that various equivalent modifications and changes may be made without departing from the scope of the present invention.

Claims (10)

1. A surveying instrument, comprising:

a processor (500);

a measurement module (600) connected to the processor (500);

the detection part signal end is arranged on the measuring instrument shell and connected with the measuring module;

at least one terminal block (400) connected to the signal terminals of the detection portion, each terminal block being provided with at least one crimping terminal module (200);

the junction box (400) is connected to the output end of at least one induction device so as to transmit the output signal of the induction device to the measuring module (600), and the measuring module obtains the measured value of the corresponding induction device.

2. The measuring instrument as claimed in claim 1, characterized in that the terminal block (400) is provided with an access section signal terminal which is connected to the detection section signal terminal by means of a wired connection, a wireless connection or a direct plug-in connection.

3. The surveying instrument according to claim 2, wherein the sensing means comprises any one or at least two of a temperature sensing means, a pressure sensing means, a current sensing means, a voltage sensing means, a frequency sensing means and a switch sensing means.

4. The measuring instrument according to claim 2, wherein the signal terminal of the detecting portion is at least one plug terminal (700), the signal terminal of the connecting portion is at least one connection port (405), and any plug terminal (700) is connected with a connection wire or directly connected with any connection port (405) of a junction box (400).

5. The measuring instrument according to claim 2, wherein the signal terminal of the detecting portion is at least one plug terminal (700), and any plug terminal (700) is connected with a plurality of junction boxes which are connected in series in sequence through connecting wires.

6. The measuring instrument as claimed in claim 5, wherein the signal terminals of the connecting part of the junction boxes (400) are two connection ports, namely a first connection port (406) and a second connection port (407), the first connection port (406) of any junction box (400) is connected to the plug terminal (700), and the second connection port (407) of two adjacent junction boxes is connected with the first connection port (406) of the junction box which is not connected to the plug terminal (700) through a connection wire.

7. The measuring instrument according to any one of claims 1 to 6, characterized in that the junction box (400) comprises a circuit board (11), the crimp terminal module (200) being electrically connected to the circuit board (11).

8. The measuring instrument according to claim 7, characterized in that the terminal box (400) is provided with at least one common terminal (300) for grounding, the common terminal (300) being electrically connected to the circuit board (11).

9. The measuring instrument according to any one of claims 1 to 6, characterized in that the crimp terminal module (200) comprises at least one crimp terminal comprising:

a housing (00);

the upper part of the pressing button (03) extends out of a first opening (012) arranged on the shell (00), and the lower part of the pressing button (03) is positioned in the shell (00);

the crimping mechanism is provided with an openable and closable inserting port (010), the crimping mechanism is positioned in the shell (00) and is in contact with the lower part of the pressing button (03), and the shell (00) is provided with a second opening (013) corresponding to the inserting port (010);

when the button (03) is pressed longitudinally, the socket (010) is opened, so that the terminal of the sensing element is inserted into the socket from the second opening (013).

10. The surveying instrument according to one of claims 1 to 6, characterized by further comprising:

the touch display is connected with the processor (500) and displays the measured value of the sensing device connected to the junction box (400) according to the instruction sent by the processor (500); and

a memory module connected to the processor (500) and storing the measured values of the sensing devices connected to the junction box (400) according to the instructions issued by the processor (500).

Images