CN114171942A - Wiring terminal - Google Patents

Abstract

The invention relates to the technical field of terminals, in particular to a wiring terminal. The wiring terminal comprises a shell, a wire pressing frame and a clamping piece. The shell has the link, has seted up test hole and wiring hole on the shell. The pressure line frame activity sets up in the shell, and the pressure line frame has the through wires hole, and the through wires hole is just to setting up with the wiring hole, and the clamping piece sets up in the shell, and the clamping piece is including continuous clamping piece main part and test arm, and the clamping piece main part sets up in the link, and the through wires hole is passed to the test arm to just setting up with the wiring hole, the test arm can with wear to locate the test needle looks butt in test hole. When the wiring terminal is used for electrical property testing, the testing pin penetrates through the testing hole and is abutted against the testing arm, so that the testing pin can be directly connected with the clamping piece, compared with an indirect or bridging mode, the reliable connection between the testing pin and the clamping piece is realized by adopting a direct contact mode, the extra contact resistance between the testing pin and the clamping piece is avoided, the accumulated measuring error is reduced, and the accuracy of an electrical property testing result is improved.

Description

Wiring terminal

Technical Field

The invention belongs to the technical field of terminals, and particularly relates to a wiring terminal.

Background

The main structure of the wiring terminal comprises a shell, a clamping piece, a wire pressing frame, an adjusting bolt and the like. Wherein the adjusting bolt is in threaded connection with the wire pressing frame. The clip can snap fit with a terminal on the user equipment. When the external lead wire stretches into the wire pressing frame, the adjusting bolt is screwed to drive the wire pressing frame to move along the axial direction of the adjusting bolt, so that the adjusting bolt and the wire pressing frame jointly compress the lead wire, and the reliable connection between the wiring terminal and the lead wire is realized.

At present, when the wiring terminal is applied to a high-precision instrument, high-precision detection equipment is required to calibrate and test relevant signals of the instrument through the wiring terminal in the production and use processes of the instrument, and reliable contact is related to multiple indexes such as precision, consistency and the like of instrument test data. The contact resistance of the high-precision detection equipment to the wiring terminal is required to be within 10 milliohms so as to ensure the accuracy of test data. In the electrical performance test of the conventional wiring terminal, a detection pin can only contact the edge of an adjusting bolt or a wire pressing frame but cannot be in direct contact with a clamping piece, so that the contact resistance in the electrical performance test is higher, test data is measured after indirect or multiple bridging, the accumulated measurement error generated by the contact resistance is increased, and the accuracy and the consistency of a test result cannot be ensured.

Therefore, a terminal is required to solve the above problems.

Disclosure of Invention

The invention aims to provide a wiring terminal to reduce accumulated measurement errors generated by contact resistance in an electrical property test process and improve the accuracy of an electrical property test result.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a wire terminal, comprising:

the testing device comprises a shell, a testing device and a testing device, wherein the shell is provided with a connecting end and is provided with a testing hole and a wiring hole;

the wire pressing frame is movably arranged in the shell and provided with a threading hole, and the threading hole is opposite to the wiring hole; and

the clamping piece, set up in the shell, the clamping piece is including the clamping piece main part and the test arm that link to each other, the clamping piece main part set up in the link, the test arm passes through the through wires hole and with the wiring hole is just to setting up, the test arm be configured as can with wear to locate the test needle looks butt in test hole.

Further, the connection terminal further includes:

the shell is also provided with a first adjusting hole, the wire pressing frame is provided with a second adjusting hole communicated with the threading hole, the fastener penetrates through the first adjusting hole and is in threaded connection with the second adjusting hole, and the fastener is pressed against the test arm;

the fastener is configured to be capable of rotating along the circumferential direction of the first adjusting hole when a lead passes through the wiring hole and extends into the wiring hole, so that the wire pressing frame and the test arm clamp the lead together.

Further, the test arm includes:

the clamping piece comprises a wiring section and a testing section, wherein one end of the wiring section is connected with the clamping piece main body, and the other end of the wiring section is connected with the testing section in an included angle; the test section can abut against the test pin.

Furthermore, the included angle between the wiring section and the testing section is 90-180 degrees.

Further, the bottom surface of the wire connecting section is provided with an anti-slip part.

Furthermore, the clamping piece main body, the wiring section and the testing section are integrally formed through bending.

Further, the housing includes:

the clamping piece and the pressing wire frame are both positioned in the mounting groove; and

the rear cover is arranged at the rear end of the main shell in a plugging manner; the rear cover is provided with the test hole and the wiring hole.

Furthermore, one of the upper end of the main shell and the rear cover is provided with a jack, the other one is correspondingly provided with a buckle arm, and the buckle arm is in plug-in fit with the jack.

Further, the lower extreme of main casing body with one of them has seted up the draw-in groove of back lid, and another corresponds outside extension and is provided with joint portion, the draw-in groove with joint portion joint cooperation.

Furthermore, the rear cover is provided with a position number mark which corresponds to the test holes one to one.

The invention has the beneficial effects that:

according to the wiring terminal provided by the invention, the shell is provided with the test hole, and the test arm of the clamping piece is arranged opposite to the test hole after penetrating through the threading hole of the wire pressing frame. When the wiring terminal is used for electrical property testing, the testing needle penetrates through the testing hole and is abutted against the testing arm, so that the testing needle is directly connected with the clamping piece. Because the test needle all is connected with the test arm when carrying out electrical property test each time, has guaranteed the uniformity of electrical property test result.

Meanwhile, the electrical performance test of the wiring terminal can be completed by directly connecting the test needle, the operation is simple and convenient, and the test efficiency is high.

Drawings

FIG. 1 is a schematic diagram of a terminal-mounted meter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a connection terminal provided in an embodiment of the present invention;

fig. 3 is an exploded view of a terminal provided by an embodiment of the present invention.

The component names and designations in the drawings are as follows:

10. a meter; 20. a test pin; 30. a lead wire;

1. a housing; 11. a main housing; 111. a connecting end; 1111. a guide groove; 1112. a clamping jaw; 112. a first adjustment aperture; 113. mounting grooves; 114. a jack; 12. a rear cover; 121. a test well; 122. a wiring hole; 123. a snap arm; 124. a card slot;

2. pressing a wire frame; 21. threading holes; 22. a second adjustment aperture;

3. a clip; 31. a clip main body; 32. a test arm; 321. a wire connection section; 322. a testing section; 4. a fastener.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1, the present embodiment discloses a connection terminal mounted on a meter 10 so that the meter 10 can be connected to an external lead 30 through the connection terminal to ensure normal use of the meter 10. Of course, the terminal may be installed in an electrical device or other apparatuses, and is not particularly limited herein.

Specifically, the instrument 10 is provided with an installation station adapted to the wiring terminal, and after the wiring terminal is installed at the installation station, the electrical property of the wiring terminal can be detected by the detection mechanism before or during the operation of the instrument 10, so as to ensure the stable and reliable use of the instrument 10.

As shown in fig. 2 and 3, the connection terminal of the present embodiment includes a housing 1, a wire frame 2, and a clip 3. The housing 1 has a connecting end 111, and the housing 1 is provided with a testing hole 121 and a wiring hole 122. The detection mechanism is provided with a test pin 20, and when the wiring terminal is used for electrical property test, the test pin 20 is only required to be inserted into the corresponding test hole 121 and electrically connected with the clamping piece 3. The wire pressing frame 2 is movably arranged in the shell 1, the wire pressing frame 2 is provided with a threading hole 21, and the threading hole 21 is opposite to the wiring hole 122. The clamping piece 3 sets up in the shell 1, and the clamping piece 3 is including the clamping piece main part 31 and the test arm 32 that link to each other, and the clamping piece main part 31 sets up in link 111, and the test arm 32 passes through wires hole 21 to just to setting up with wiring hole 122, test arm 32 can with wear to locate the test pin 20 looks butt of test hole 121.

In the present embodiment, when the terminal is used for electrical performance testing, the testing pin 20 is inserted into the testing hole 121 and abuts against the testing arm 32, so that the testing pin 20 is directly connected to the clip 3. Compared with the existing indirect or bridging mode, the embodiment adopts the direct contact mode to realize the reliable connection between the test needle 20 and the clamping piece 3, and avoids the additional contact resistance between the test needle and the clamping piece, thereby reducing the accumulated measurement error and improving the accuracy of the electrical property test result. Since the test pins 20 are connected to the test arms 32 each time an electrical performance test is performed, the consistency of the electrical performance test results is maintained. Meanwhile, the electrical performance test of the wiring terminal can be completed by directly connecting the test needle 20, the operation is simple and convenient, and the test efficiency is high.

Note that, as shown in fig. 1 and 2, the upper end face of the connection end 111 of the housing 1 has a guide groove 1111 extending in the front-rear direction, and a claw 1112 is provided above the guide groove 1111. When binding post installed the installation station on instrument 10, binding post's link 111 was pegged graft in instrument 10 forward by the back on, and guide way 1111 can play spacing guide effect to binding post's installation, need not to carry out accurate counterpoint, has improved the installation effectiveness of binding post on instrument 10. When the wiring terminal is installed in place, the clamping jaw 1112 can be clamped on the instrument 10 to lock the wiring terminal and realize stable installation of the wiring terminal.

The quantity of guide slot 1111 of this embodiment is three, has strengthened binding post's guide effect, avoids binding post to peg graft in the in-process of instrument 10 and takes place to deflect. Simultaneously, can also insert the card in one or more guide way 11 to fill corresponding guide way 111, so that binding post's guide way 111 quantity carries out the adaptability adjustment according to the installation demand, avoids binding post to take place to insert the wrong condition, makes binding post have good fool-proof effect. The number of the clamping jaws 1112 is two, so that the connection strength of the wiring terminal and the instrument 10 is enhanced, and the reliability and the stability of the wiring terminal installation are further improved.

As shown in fig. 2 and 3, the housing 1 includes a main housing 11, a connecting end 111 extends from a front end of the main housing 11, a mounting groove 113 is formed in the main housing 11, the mounting groove 113 penetrates through the connecting end 111 and a rear end of the main housing 11, and the clip 3 and the wire pressing frame 2 are both located in the mounting groove 113. The rear cover 12 is plugged at the rear end of the main housing 11, and the rear cover 12 is provided with a testing hole 121 and a wiring hole 122.

The main housing 11 of this embodiment is partitioned by two partitions to form three mounting slots 113, and the three clips 3 are respectively inserted into the corresponding mounting slots 113. The three wire pressing frames 2 are respectively movably arranged in the corresponding mounting grooves 113 and can move up and down along the vertical direction. Correspondingly, the number of the test holes 121 and the number of the wiring holes 122 on the rear cover 12 are the same, and are three. In other embodiments, the number of the mounting grooves 113, the wire pressing frame 2, the clips 3, and the corresponding testing holes 121 and the corresponding wire connecting holes 122 may be one, two, or more than four.

The main casing body 11 and the rear cover 12 of the present embodiment are assembled into a whole in a clamping fit manner, so that the assembling process of the housing 1 is simple, and the assembling efficiency is high, stable and reliable. Meanwhile, the clamping assembly mode is convenient for the disassembly and assembly operation of the shell 1.

Specifically, as shown in fig. 2 and 3, one of the upper end of the main housing 11 and the rear cover 12 is provided with an insertion hole 114, and the other is correspondingly provided with a snap arm 123, and the snap arm 123 is in plug-in fit with the insertion hole 114. The upper end of the main housing 11 of this embodiment is provided with three insertion holes 114, the upper end of the rear cover 12 is correspondingly provided with three snap arms 123, and the three snap arms 123 are inserted into the corresponding insertion holes 114, so that the connection strength between the main housing 11 and the rear cover 12 is improved.

In other embodiments, three snap arms 123 are disposed at the upper end of the main housing 11, three insertion holes 114 are correspondingly protruded at the upper end of the rear cover 12, and the three snap arms 123 are respectively inserted into the corresponding insertion holes 114.

Further, a clamping groove 124 is formed in one of the lower end of the main casing 11 and the rear cover 12, the other clamping portion correspondingly extends outwards, and the clamping groove 124 is matched with the clamping portion in a clamping mode. The lower end surface of the main housing 11 of this embodiment extends outward and is provided with a clamping portion, and the rear cover 12 is correspondingly recessed to form a clamping groove 124. After the three clamping arms 123 are respectively inserted into the corresponding insertion holes 114, the clamping grooves 124 can be matched with the clamping parts in a clamping manner, the assembly of the shell 1 is completed, and the structural strength of the shell 1 is further improved.

In other embodiments, the lower end surface of the main housing 11 is recessed to form a locking groove 124, and the back cover 12 is provided with a locking portion extending outwards correspondingly. After the three clip arms 123 are respectively inserted into the corresponding insertion holes 114, the clip grooves 124 can be engaged with the clip portions to complete the assembly of the housing 1.

As shown in fig. 2 and 3, three test holes 121 are located right above the corresponding wiring holes 122, respectively. In order to facilitate the insertion operation of the lead 30 and the test pin 20, the rear cover 12 is provided with a bit number mark corresponding to the test holes 121 one by one. The position number identification can be identification such as numbers or letters, so that different test holes 121 and wiring holes 122 are distinguished, misconnection is avoided, and a good fool-proof effect is achieved.

As shown in fig. 3, the connection terminal further includes a fastening member 4, the housing 1 is further provided with a first adjusting hole 112, the wire pressing frame 2 is provided with a second adjusting hole 22 communicated with the threading hole 21, the fastening member 4 is inserted into the first adjusting hole 112 and is in threaded connection with the second adjusting hole 22, and the fastening member 4 abuts against the testing arm 32. When the lead 30 passes through the wire connection hole 122 and extends into the wire threading hole 21, the fastener 4 can rotate along the circumferential direction of the first adjustment hole 112, so that the wire pressing frame 2 and the test arm 32 clamp the lead 30 together.

The fastening member 4 of the present embodiment is a bolt, and when the connection terminal is not connected to the lead 30, the fastening member 4 is inserted into the first adjusting hole 112 and is threadedly connected to the second adjusting hole 22 of the wire pressing frame 2. Fastener 4 and wire pressing frame 2 all are in active state this moment, can adjust wire pressing frame 2 along the position of vertical direction in a flexible way to adjustment threading hole 21 just faces the area with wiring hole 122, and the lead wire 30 of being convenient for penetrates in wiring hole 122 and threading hole 21 in proper order.

It should be noted that the wire frame 2 is cubic and cannot rotate around its own axis in the mounting groove 113. After the lead 30 extends into the threading hole 21, the fastener 4 is screwed, the wire pressing frame 2 is lifted along the axial direction of the fastener 4, and the lead 30 is driven to be lifted synchronously until the lead 30 abuts against the lower end face of the testing arm 32, the fastener 4 is screwed continuously, so that the bottom wall of the threading hole 21 and the testing arm 32 clamp the lead 30 together, and the reliable connection between the wiring terminal and the lead 30 is realized. It should be noted that the position of the fastener 4 in the axial direction thereof is kept constant during the process of clamping the lead 30. The screwing direction of the fastening member 4 may be clockwise or counterclockwise, and only the wire pressing frame 2 and the test arm 32 are required to clamp the lead 30, which is not particularly limited herein.

The clip main body 31 of this embodiment is a triangular elastic clip, and two ends of the clip main body 31 are close to each other with a gap. When binding post installs on instrument 10, the conductive contact of installation site can strut the clearance of clamping piece main part 31 and stretch into clamping piece main part 31 on instrument 10 in, clamping piece main part 31 relies on the elastic restoring force of self to press from both sides the conductive contact tight, has realized binding post and instrument 10's reliable electricity and has been connected.

As shown in fig. 3, the testing arm 32 includes a wire segment 321 and a testing segment 322, wherein one end of the wire segment 321 is connected to the clip body 31, and the other end is connected to the testing segment 322 at an angle. The test section 322 is capable of abutting against the test pin 20. The line connection section 321 of this embodiment is worn to locate in the threading hole 21 of pressing wire frame 2, and the upper end and the fastener 4 looks butt of line connection section 321, and the lower extreme of line connection section 321 can compress tightly lead wire 30 in threading hole 21 to realize lead wire 30 and binding post's reliable connection.

Further, the bottom surface of the wire connection section 321 has a non-slip portion. When the wire connecting section 321 and the wire pressing frame 2 clamp the lead 30 together, the anti-slip part increases the friction force between the wire connecting section 321 and the lead 30, so that the clamping force applied to the lead 30 is increased, the lead 30 is prevented from slipping from the threading hole 21 of the wire pressing frame 2, and the reliable connection between the wire pressing frame 2 and the lead 30 is realized. The anti-slip portion of the present embodiment may have a saw-toothed structure, or may have a structure such as a stripe, and only the friction between the wire connecting segment 321 and the lead 30 needs to be increased, which is not particularly limited herein.

Specifically, the included angle between the wiring section 321 and the testing section 322 is 90-180 degrees. The angle between the wire segment 321 and the testing segment 322 is 90 ° in this embodiment, so that the testing arm 32 is L-shaped. When the testing pin 20 is pressed against the testing section 322, the testing section 322 slightly rotates towards the wiring section 321, so that the testing section 322 has a tendency of rotating towards the testing pin 20 under the action of self elastic restoring force, the testing section 322 and the testing pin 20 are kept in tight contact, and the clamping piece 3 and the testing pin 20 are reliably connected. Of course, the included angle between the connection segment 321 and the test segment 322 may also be 100 °, 110 °, 120 °, 150 °, 170 °, 180 °, or the like.

The clamping piece main body 31, the wiring section 321 and the testing section 322 of the embodiment are integrally formed through bending, the processing technology is simple, the difficulty is low, and the cost of the clamping piece 3 is favorably reduced. Specifically, the clamping piece 3 can be a copper sheet, and can be quickly bent through a bending machine, so that the clamping piece is easy to process.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A terminal, comprising:

the testing device comprises a shell (1) and a testing device, wherein the shell (1) is provided with a connecting end (111), and a testing hole (121) and a wiring hole (122) are formed in the shell (1);

the wire pressing frame (2) is movably arranged in the shell (1), the wire pressing frame (2) is provided with a threading hole (21), and the threading hole (21) is arranged opposite to the wiring hole (122); and

clamping piece (3), set up in shell (1), clamping piece (3) are including the clamping piece main part (31) and test arm (32) that link to each other, clamping piece main part (31) set up in link (111), test arm (32) pass through threading hole (21) and with wiring hole (122) are just to setting up, test arm (32) are configured as can with wear to locate test needle (20) looks butt of test hole (121).

2. The wire connecting terminal according to claim 1, further comprising:

the shell (1) is further provided with a first adjusting hole (112), the wire pressing frame (2) is provided with a second adjusting hole (22) communicated with the threading hole (21), the fastener (4) penetrates through the first adjusting hole (112) and is in threaded connection with the second adjusting hole (22), and the fastener (4) abuts against the testing arm (32);

the fastener (4) is configured to be capable of rotating along the circumferential direction of the first adjusting hole (112) when a lead (30) passes through the wire connecting hole (122) and extends into the wire passing hole (21), so that the wire pressing frame (2) and the test arm (32) clamp the lead (30) together.

3. A terminal according to claim 1, characterised in that the test arm (32) comprises:

the clamping piece comprises a wiring section (321) and a testing section (322), wherein one end of the wiring section (321) is connected with the clamping piece main body (31), and the other end of the wiring section (321) is connected with the testing section (322) in an included angle; the test section (322) can be brought into abutment with the test needle (20).

4. A terminal block according to claim 3, characterised in that the angle between the block (321) and the test block (322) is 90 ° to 180 °.

5. A terminal block according to claim 3, characterized in that the bottom surface of the block (321) has a non-slip portion.

6. A terminal according to claim 3, wherein the clip body (31), the terminal section (321) and the test section (322) are integrally formed by bending.

7. A terminal according to claim 1, characterized in that the housing (1) comprises:

the front end of the main shell (11) extends to form the connecting end (111), a mounting groove (113) is formed in the main shell (11), the mounting groove (113) penetrates through the connecting end (111) and the rear end of the main shell (11), and the clamping piece (3) and the wire pressing frame (2) are both located in the mounting groove (113); and

the rear cover (12) is arranged at the rear end of the main shell (11) in a sealing mode; the rear cover (12) is provided with the test hole (121) and the wiring hole (122).

8. A terminal according to claim 7, wherein one of the upper end of the main housing (11) and the rear cover (12) is provided with a plug hole (114), and the other one is correspondingly provided with a snap arm (123), and the snap arm (123) is in plug fit with the plug hole (114).

9. The connecting terminal according to claim 8, wherein one of the lower end of the main housing (11) and the rear cover (12) is provided with a clamping groove (124), the other one of the lower end of the main housing and the rear cover correspondingly extends outwards to be provided with a clamping portion, and the clamping groove (124) is in clamping fit with the clamping portion.

10. A wiring terminal according to claim 7, characterized in that the rear cover (12) is provided with a bit number mark corresponding to the test hole (121) one by one.

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