CN115498435B - Terminal strip - Google Patents

Abstract

The invention discloses a terminal block, and belongs to the technical field of power equipment. The device comprises a base, a terminal connecting rod and a plurality of terminal units, wherein the base comprises a bottom and a plurality of installation parts, the bottom is provided with a first accommodating cavity, the installation parts are provided with a second accommodating cavity, threading holes and sliding grooves which are respectively communicated with the second accommodating cavity, and the installation parts are provided with state observation holes communicated with the sliding grooves; the terminal unit comprises a frame, a moving assembly, a state indicating sheet and a connecting assembly for connecting the moving assembly and the state indicating sheet, wherein the frame is fixed in the second accommodating cavity, at least part of the moving assembly is positioned in the frame, the frame is communicated with the sliding groove, the connecting assembly is arranged between the moving assembly and the frame, and the state indicating sheet is provided with a first mark and a second mark; the moving assembly drives the connecting assembly to displace, so that one of the first mark and the second mark is exposed out of the state observation hole; the terminal connecting rod is accommodated in the first accommodating cavity and is connected with the frames of the plurality of terminal units. The invention intuitively reflects whether the terminal is fastened or not.

Description

Terminal strip

Technical Field

The invention relates to the technical field of power equipment, in particular to a terminal strip.

Background

The transformer substation comprises a large number of screen cabinets such as a protection screen and a measurement and control screen, and box bodies such as equipment control converging boxes and terminal boxes, and the protection screen, the measurement and control screen, the equipment control converging boxes and the terminal boxes in the transformer substation are all provided with a large number of terminal bars, so that operators need to check whether the connection between cables and the terminal bars is firm or not when the transformer substation performs protection and fixed inspection and daily maintenance of equipment.

Among the prior art, the terminal row includes body and terminal, and the plug wire hole has been seted up to the body, screws up the terminal after the cable inserts the plug wire hole, makes the cable press from both sides tightly in the plug wire hole. When the equipment is inspected or maintained regularly, whether the terminal is loosened or not is confirmed by manually tightening the terminal, so that whether the cable is firmly clamped in the plug wire hole or not is judged. However, when the number of terminal blocks included in the equipment such as the transformer substation is large, the inspection workload of the terminal blocks is very large.

Disclosure of Invention

The invention aims to provide a terminal strip which intuitively reflects whether a terminal is fastened or not, avoids the situation that whether the terminal is firm or not is confirmed by manually tightening the terminal, and reduces the workload of terminal strip inspection.

To achieve the purpose, the invention adopts the following technical scheme:

provided is a terminal block including:

The base comprises a bottom and a plurality of installation parts, wherein the bottom is provided with a first accommodating cavity, the installation parts are provided with a second accommodating cavity, a threading hole and a sliding groove which are respectively communicated with the second accommodating cavity, and the installation parts are provided with a state observation hole communicated with the sliding groove;

the terminal units comprise a frame, a moving assembly, a state indicating sheet and a connecting assembly for connecting the moving assembly and the state indicating sheet, wherein the frame is fixed in the second accommodating cavity, at least part of the moving assembly is positioned in the frame, the frame is communicated with the sliding chute, the connecting assembly is arranged between the moving assembly and the frame, and the state indicating sheet is provided with a first mark and a second mark; the cable can pass through the threading hole and is accommodated in the frame, the moving assembly drives the connecting assembly to displace when moving along the first direction, and the connecting assembly drives the state indicating sheet to be connected with the chute in a sliding manner along the second direction, so that one of the first mark and the second mark is exposed out of the state observing hole;

And the terminal connecting rods are accommodated in the first accommodating cavities and are connected with a plurality of frames of the terminal units.

In some possible embodiments, the first indicia is a first cladding layer and the second indicia is a second cladding layer.

In some possible embodiments, the state observation hole is opened at a middle position of the chute along the second direction.

In some possible embodiments, the terminal unit includes a moving rod and a bolt penetrating through the moving rod and screwed to the moving rod, a head of the bolt is disposed outside the frame, a tail of the bolt is disposed inside the frame, and the connection assembly is disposed between one side of the moving rod facing away from the tail of the bolt and the frame.

In some possible embodiments, the terminal unit includes a pressing plate, and the pressing plate is fixedly arranged at the tail of the bolt.

In some possible embodiments, the connecting assembly includes an elastic member and a link rod connected to the elastic member, the link rod being connected to the status indicator piece, the elastic member being capable of being deformed simultaneously in a first direction and in a second direction and being shortened in one direction when being elongated in the other direction.

In some possible embodiments, the connecting assembly includes two elastic members, the two elastic members are located at two sides of the bolt, and the linkage rod is connected to one of the elastic members.

In some possible embodiments, the frame is provided with a bolt hole, the bolt penetrates through the bolt hole, and the bolt hole and the state observation hole are located on the same side of the mounting portion.

In some possible embodiments, a limiting pin is arranged between the moving rod and the frame, and the limiting pin is positioned on one side of the moving rod away from the tail of the bolt and fixed on the frame.

In some possible embodiments, the terminal unit includes a terminal base disposed within the frame, the cable being sandwiched between the moving assembly and the terminal base.

The invention has the beneficial effects that:

According to the terminal strip provided by the invention, when an operator checks the fastening condition of the terminal strip, only the first mark or the second mark is displayed on the state indicating sheet of the state observation hole, if the first mark is observed from the state observation hole, the terminal is in the fastening state, and if the second mark is observed from the state observation Kong Guan, the terminal is in the loosening or idle state. The terminal strip visually reflects whether the terminal is fastened through the state of the state indicating sheet observed from the state observation hole, so that whether the terminal is fastened or not is visually detected, and compared with the scheme that whether the terminal is firmly confirmed by manually tightening the terminal, the terminal strip checking work load is greatly reduced.

Drawings

FIG. 1 is a cross-sectional view of a base;

Fig. 2 is a schematic view of the terminal unit in a first state;

fig. 3 is a schematic view of the terminal unit in a second state;

Fig. 4 is a cross-sectional view of the terminal block.

In the figure:

1. A base; 11. a bottom; 111. a first accommodation chamber; 12. a mounting part; 121. a second accommodation chamber; 122. a threading hole; 123. a chute; 124. a state observation hole;

2. A terminal unit; 21. a frame; 211. bolt holes; 22. a moving assembly; 221. a moving rod; 222. a bolt; 223. a pressing plate; 23. a status indicator; 231. a first identifier; 232. a second identifier; 24. a connection assembly; 241. an elastic member; 242. a linkage rod; 25. a limiting pin; 26. a terminal base;

3. And a terminal connecting rod.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

The present embodiment provides a terminal strip, as shown in fig. 1-4, including a base 1, a terminal connecting rod 3 and a plurality of terminal units 2, where the base 1 includes a bottom 11 and a plurality of mounting portions 12, the bottom 11 is provided with a first accommodating cavity 111, the mounting portions 12 are provided with a second accommodating cavity 121, a threading hole 122 and a chute 123 respectively communicated with the second accommodating cavity 121, and the mounting portions 12 are provided with a state observation hole 124 communicated with the chute 123; the terminal unit 2 comprises a frame 21, a moving assembly 22, a state indicating piece 23 and a connecting assembly 24 for connecting the moving assembly 22 and the state indicating piece 23, wherein the frame 21 is fixed in the second accommodating cavity 121, at least part of the moving assembly 22 is positioned in the frame 21, the frame 21 is communicated with the sliding groove 123, the connecting assembly 24 is arranged between the moving assembly 22 and the frame 21, and the state indicating piece 23 is provided with a first mark 231 and a second mark 232; the terminal connecting rod 3 is accommodated in the first accommodating cavity 111, the terminal connecting rod 3 is connected with the frames 21 of the plurality of terminal units 2, so that the frames 21 are connected, cables in different cable threading holes 122 are connected, the specific frames 21 are metal frames, and the base 1 is a plastic base.

The cable can pass through the threading hole 122 and be accommodated in the frame 21, when the moving component 22 moves along the first direction, the connecting component 24 is driven to displace, and the connecting component 24 drives the state indicating piece 23 to be connected to the sliding groove 123 in a sliding manner along the second direction, so that one of the first identifier 231 and the second identifier 232 is exposed out of the state observing hole 124.

In this embodiment, referring to fig. 4, the terminal block includes two mounting portions 12 and two terminal units 2, the state observation holes 124 of the two mounting portions 12 are provided on the sides of the two frames 21 facing each other, the threading holes 122 of the two mounting portions 12 are provided on the sides facing away from each other, the two mounting portions 12 are symmetrically arranged, and the state indicating pieces 23 are symmetrically mounted on the slide grooves 123. Specifically, taking the first direction as the up-down direction and the second direction as the left-right direction for example, the left status indicator piece 23 located in the left sideslip groove 123 is provided with the first identifier 231 on the left side, the right status indicator piece 23 located in the right sideslip groove 123 is provided with the second identifier 232 on the right side, the right side is provided with the first identifier 231, the first identifiers 231 of the two status indicator pieces 23 are both close to the connecting component 24, when the connecting component 24 pushes the status indicator piece 23, the first identifiers 231 are identified, and when the connecting component 24 pulls the status indicator piece 23, the second identifiers 232 are identified. When the moving assembly 22 positioned on the left side moves downwards to the first state, the cable is clamped between the moving assembly 22 and the frame 21, and the first mark 231 of the state indicating sheet 23 is exposed to the state observing hole 124; when the moving assembly 22 on the right moves up to the second state, the cable is released between the moving assembly 22 and the frame 21, and the second mark 232 of the state indicating piece 23 is exposed to the state observing hole 124.

When an operator checks the fastening condition of the terminal block, only the first flag 231 or the second flag 232 is displayed on the state indicating sheet 23 of the state observing hole 124, if the first flag 231 is observed from the state observing hole 124, the flag terminal is in the fastened state, and if the second flag 232 is observed from the state observing hole 124, the flag terminal is in the loose or idle state. The terminal strip visually reflects whether the terminal is fastened through the state of the state indicating sheet 23 observed from the state observation hole, so that whether the terminal is fastened or not is visually detected, and compared with the scheme that whether the terminal is firmly confirmed by manually tightening the terminal, the terminal strip checking work load is greatly reduced.

In one embodiment, as shown in fig. 4, the first identifier 231 is a first coating layer, the second identifier 232 is a second coating layer, and the first identifier 231 and the second identifier 232 are disposed at two ends of the status indicator piece 23, so that different positions of the status indicator piece 23 can be conveniently identified towards the status observation hole 124, and then the status of the terminal can be identified. The first mark 231 and the second mark 232 are formed by the first coating layer and the second coating layer respectively, so that the manufacturing is convenient, for example, the coating layer can be formed by the form of a coated coating layer, or the coating layer can be formed by the structure coating, specifically, the first mark 231 can be formed by the red coating layer, the second mark 232 can be formed by the green coating layer, and the more obvious the color comparison is, the easier the distinguishing and the identifying are.

In one embodiment, as shown in fig. 1 and fig. 4, the state observation hole 124 is formed at a middle position of the sliding groove 123 along the second direction, one end of the state indication sheet 23 moves toward one end of the sliding groove 123, the other end of the state indication sheet 23 can be observed from the state observation hole 124, and the length of the state indication sheet 23, the length of the sliding groove 123 and the position of the state observation hole 124 can be specifically set according to the actual situation, for example, in the second direction, the length of the state observation hole 124 is L, the length of the state indication sheet 23 is 2L, and the length of the sliding groove 123 is 3L.

In one embodiment, as shown in fig. 2 to 4, the terminal unit 2 includes a moving rod 221 and a bolt 222 penetrating through and screwed to the moving rod 221, the moving rod 221 is provided with a central hole, the central hole is provided with an internal thread, the bolt 222 is screwed to the central hole, the frame 21 is provided with a bolt hole 211, the bolt 222 penetrates through the bolt hole 211, the head of the bolt 222 is arranged outside the frame 21, the tail of the bolt 222 is arranged inside the frame 21, the bolt 222 is conveniently screwed from the outside, the operation is convenient, the tail is used for pressing a cable, and the connecting assembly 24 is arranged between one side of the moving rod 221 away from the tail of the bolt 222 and the frame 21. When the bolt 222 is screwed down to compress the cable, the moving rod 221 moves upward, and when the bolt 222 moves down to a preset position, the moving rod 221 moves upward to the preset position, so as to drive the connecting component 24 to displace upward and move to the preset position, the connecting component 24 pushes the state indicating piece 23 to move in the chute 123, the first identifier 231 is exposed in the state observing hole 124, and the first identifier 231 is identified; when the bolt 222 is screwed up to unscrew the cable, the moving rod 221 moves down, and when the bolt 222 moves up to the preset position, the moving rod 221 moves down to the preset position, so as to drive the connecting component 24 to displace down and move to the preset position, the connecting component 24 pulls the state indicating piece 23 to move in the chute 123, so that the second identifier 232 is exposed to the state observing hole 124, and the second identifier 232 is identified, so that the structure is simple and easy to realize. In one embodiment, the status observation hole 124 is located on the same side as the bolt hole 211, that is, the observation side and the tightening bolt 222 are located on the same side, and when the loosening of the terminal is observed, the tightening bolt 222 can be directly tightened, thereby facilitating the operation.

In one embodiment, as shown in fig. 2-4, the terminal unit 2 includes a pressing plate 223, where the pressing plate 223 is fixedly arranged at the tail of the bolt 222, and the contact area between the pressing plate 223 and the cable is increased to prevent the tail of the bolt 222 from directly abutting against the cable during the fastening process to cause cable damage.

In one embodiment, as shown in fig. 2-4, the connection assembly 24 includes an elastic member 241 and a link lever 242 connected to the elastic member 241, the link lever 242 being connected to the status indicator piece 23, the elastic member 241 being capable of being deformed simultaneously in a first direction and a second direction and being shortened in one direction when elongated in the other direction. When the bolt 222 is tightened, the elastic member 241 is compressed in the first direction, elongated in the second direction, and pushes the status indicator piece 23 to move, and the first flag 231 is recognized; when the bolt 222 is loosened, the moving rod 221 moves downward, the elastic member 241 is restored to be elongated in the first direction, shortened in the second direction, the pull state indicator piece 23 moves, and the second mark 232 is recognized. Through setting up elastic component 241, under normal condition or bolt 222 not hard up under the condition, elastic component 241 extends the state along first direction, moves down the pole 221 under the effect of elastic component 241, guarantees that second sign 232 exposes in state observation hole 124, and state indicator piece 23 change is unobvious and causes the interference when avoiding bolt 222 not hard up, influences and observes the detection effect. The specific elastic piece 241 may be a diamond-shaped elastic piece made of elastic pieces, two opposite corner ends of the diamond-shaped elastic piece are connected to the frame 21 and the moving rod 221, and one corner end is connected to the linkage rod 242, so that the structure is simple. According to actual situation, the elastic piece 241 with a larger elastic coefficient can be selected, so that reliability is improved.

In one embodiment, as shown in fig. 2-4, the connecting assembly 24 includes two elastic members 241, the two elastic members 241 are located at two sides of the bolt 222, the linkage rod 242 is connected to one of the elastic members 241, and the two elastic members 241 act to make the force applied to the moving rod 221 uniform, so as to avoid deflection to affect the detection effect.

In one embodiment, as shown in fig. 2-4, a limiting structure is disposed in the frame 21, the limiting structure is disposed between the moving rod 221 and the frame 21, and the limiting structure is located on a side of the moving rod 221 away from the tail of the bolt 222. The limiting structure can limit the movement of the moving rod 221, the moving rod 221 reaches the highest point when being abutted against the limiting structure, the upward movement is avoided, and the moving rod 221 is prevented from excessively compressing the elastic piece 241 for a long time, so that the elastic piece 241 is prevented from losing elasticity due to fatigue. In one embodiment, the limiting structure comprises two limiting pins 25, and the two limiting pins 25 are fixed on the frame 21 and arranged on two sides of the bolt 222, so that the balance of the moving rod 221 at the highest position is ensured.

In one embodiment, as shown in fig. 2-4, the terminal unit 2 includes a terminal base 26 disposed within the frame 21, and the cable is sandwiched between the moving assembly 22 and the terminal base 26, ensuring that the cable is compressed.

In one embodiment, the working procedure of the terminal block includes: when the terminal is idle, as shown in the right structure of fig. 2 and 4, the elastic member 241 is in an extended state in the first direction and in a compressed state in the second direction, at this time, the elastic member 241 makes the moving rod 221 separate from the limiting pin 25 by a distance, the connecting component 24 pulls the state indicating piece 23 to move close to the frame 21, the second mark 232 is exposed to the state observing hole 124, and the state observing hole 124 sees the second mark 232 to identify the terminal idle state. When the bolt 222 is tightened, as shown in the left-hand structure of fig. 3 and 4, the pressing plate 223 is fastened to the terminal base 26, and at this time, the terminal is in a fastened state, the moving rod 221 compresses the elastic member 241 and approaches the stopper pin 25, the connection assembly 24 pushes the state indicating piece 23 to move away from the frame 21, the first flag 231 is exposed to the state observing hole 124, and the state observing hole 124 sees the first flag 231 from the outside, and the terminal fastening state is marked.

Example two

The structure of this embodiment is basically the same as that of the first embodiment, and the same parts as those of the first embodiment are not repeated in this embodiment, and the difference between this embodiment and the first embodiment is that: taking the first direction as the up-down direction and the second direction as the left-right direction as an example for illustration, the terminal block includes two mounting portions 12 and two terminal units 2, and the state observation holes 124 of the two mounting portions 12 are provided on the left sides of the two frames 21. The installation directions of the two state indicating sheets 23 are the same, and are respectively provided with a first mark 231 on the right side and a second mark 232 on the left side, so that the first mark 231 is exposed to the state observing hole 124 when the state indicating sheets 23 are pushed, and the second mark 232 is exposed to the state observing hole 124 when the state indicating sheets 23 are pulled.

Example III

The structures of the first embodiment and the second embodiment are basically the same, and the parts of the first embodiment and the second embodiment that are the same are not repeated in the present embodiment, and the difference between the first embodiment and the second embodiment is that: taking the first direction as the up-down direction and the second direction as the left-right direction as an example for illustration, the terminal block includes two mounting portions 12 and two terminal units 2, and the state observation holes 124 of the two mounting portions 12 are provided on the right sides of the two frames 21. The installation directions of the two state indicating sheets 23 are the same, and the left side is provided with a first mark 231, and the right side is provided with a second mark 232, so that the first mark 231 is exposed to the state observing hole 124 when the state indicating sheet 23 is pushed, and the second mark 232 is exposed to the state observing hole 124 when the state indicating sheet 23 is pulled.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (7)

1.A terminal block, characterized by comprising:

The base (1) comprises a bottom (11) and a plurality of installation parts (12), wherein the bottom (11) is provided with a first accommodating cavity (111), the installation parts (12) are provided with a second accommodating cavity (121), threading holes (122) and sliding grooves (123) which are respectively communicated with the second accommodating cavity (121), and the installation parts (12) are provided with state observation holes (124) which are communicated with the sliding grooves (123);

A plurality of terminal units (2), wherein the terminal units (2) comprise a frame (21), a moving assembly (22), a state indicating sheet (23) and a connecting assembly (24) for connecting the moving assembly (22) and the state indicating sheet (23), the frame (21) is fixed in the second accommodating cavity (121), at least part of the moving assembly (22) is positioned in the frame (21), the frame (21) is communicated with the sliding groove (123), the connecting assembly (24) is arranged between the moving assembly (22) and the frame (21), and the state indicating sheet (23) is provided with a first mark (231) and a second mark (232); the cable can pass through the threading hole (122) and is accommodated in the frame (21), when the moving component (22) moves along a first direction, the connecting component (24) is driven to displace, and the connecting component (24) drives the state indicating piece (23) to be connected with the chute (123) in a sliding manner along a second direction, so that one of the first mark (231) and the second mark (232) is exposed out of the state observing hole (124);

A terminal connecting rod (3) accommodated in the first accommodation chamber (111), the terminal connecting rod (3) being connected to the frames (21) of the plurality of terminal units (2);

The connecting assembly (24) comprises an elastic piece (241) and a linkage rod (242) connected to the elastic piece (241), wherein the linkage rod (242) is connected to the state indicating piece (23), and the elastic piece (241) can deform simultaneously along a first direction and the second direction and can shorten along the other direction when being stretched along one direction;

The terminal unit (2) comprises a moving rod (221) and a bolt (222) penetrating through the moving rod (221) and connected with the moving rod (221) in a threaded mode, the head of the bolt (222) is arranged outside the frame (21), the tail of the bolt (222) is arranged inside the frame (21), and the elastic piece (241) is arranged between one side, away from the tail of the bolt (222), of the moving rod (221) and the frame (21);

The terminal unit (2) comprises a terminal base (26) arranged in the frame (21), and the cable is clamped between the bolt (222) and the terminal base (26).

2. The terminal block according to claim 1, wherein the first logo (231) is a first coating layer and the second logo (232) is a second coating layer.

3. The terminal block according to claim 1, wherein the state observation hole (124) is opened at an intermediate position of the chute (123) in the second direction.

4. The terminal block according to claim 1, wherein the terminal unit (2) includes a pressing plate (223), and the pressing plate (223) is fixedly arranged at the tail of the bolt (222).

5. The terminal block according to claim 1, wherein the connection assembly (24) includes two elastic members (241), the two elastic members (241) are located at both sides of the bolt (222), and the link lever (242) is connected to one of the elastic members (241).

6. The terminal block according to claim 1, wherein the frame (21) is provided with a bolt hole (211), the bolt (222) penetrates through the bolt hole (211), and the bolt hole (211) and the state observation hole (124) are located on the same side of the mounting portion (12).

7. The terminal block according to claim 1, characterized in that a limiting pin (25) is arranged between the moving rod (221) and the frame (21), and the limiting pin (25) is positioned on one side of the moving rod (221) away from the tail of the bolt (222) and is fixed on the frame (21).