CN217640880U

CN217640880U - Open-type current transformer

Info

Publication number: CN217640880U
Application number: CN202221437724.9U
Authority: CN
Inventors: 张学森; 牟玉凤; 王志能
Original assignee: DELIXI GROUP CO LTD
Current assignee: DELIXI GROUP CO LTD
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-21
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses an open-type current transformer is equipped with two first ends that the pivot links to each other between first shell and the second shell to and keep two second ends that link to each other fixedly through locking structure, locking structure comprises drive button, locating part, elastic component, location pothook and locator card platform, and the portable setting of drive button is in one of them on the side of second end to link to each other with the locating part through the elastic component, on the location pothook set up drive button, the locator card platform sets up in another in the second end and with location pothook formation joint cooperation, drive button drive location pothook break away from the locator card platform when receiving external force to press, this kind of current transformer's installation and split are all more convenient and fast, the location pothook tightly colludes with the help of the elastic force of elastic component effect on drive button and supports on the locator card platform, the cooperation locking is reliable, difficult not hard up to take place, and installation stability is good, long service life promotes product performance.

Description

Open-type current transformer

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to open-type current transformer.

Background

The current transformer is a current conversion device, has the double functions of current conversion and isolation, converts large current of a high-voltage loop or a low-voltage loop into low-voltage small current, and supplies the low-voltage small current to an instrument and a relay protection device to realize the functions of measurement, metering, protection and the like.

The current transformer adopting the split type installation is usually installed and fixed through a screw structure, a plurality of parts are needed for installation, the installation is inconvenient, and the corrosion condition can be generated after long-term use. Therefore, chinese patent document CN204315380U discloses a current transformer, which includes a pair of large and small separated iron cores, respectively installed in two independent plastic protecting shells, a current sampling coil installed on the large iron core and integrally encapsulated by epoxy resin, a sampling signal led out by a cable, one side of the large and small plastic protecting shells hinged to each other in a flip-lid shape through a hinge shaft, the other side of the large and small plastic protecting shells provided with a lock catch to lock the two protecting shells, the large and small plastic protecting shells being frame-type and respectively provided with a bottom cover, and an arch spring piece installed between the small bottom cover of the small protecting shell and the small separated iron core. It can be seen from the structure of the current transformer that one of the protective cases is provided with a lock catch, and the other protective case is provided with a boss which is elastically clamped with the lock catch, the lock catch is exposed out of the outer side wall of the protective case and extends downwards for a certain length, the whole length is longer, the lock catch is forcibly separated from the boss by means of a tool, the lock catch is easy to generate fatigue loosening and even breakage in the long-term use process, the service life is short, and the installation stability is slightly poor.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the hasp among the prior art and exposing on the protective case lateral wall, and whole extension length is done longer, takes place the not hard up condition of rupture even of fatigue easily in long-term use, the poor problem of installation stability to provide an installation and split all comparatively convenient and fast, the cooperation locking is reliable, and installation stability is good, promotes the open-type current transformer of product performance.

In order to solve the above problem, the utility model provides an open-type current transformer, including rotatable open or closed first shell and second shell, be equipped with two first ends that the pivot links to each other between first shell and the second shell to and keep two second ends that link to each other fixedly through locking structure when closed, two first ends and two second ends have a pair of port respectively, locking structure includes:

the driving button is movably arranged on the side surface of the second end of the driving button and extends into the second end;

the limiting piece is fixed in the second end of the limiting piece and is opposite to the driving button;

the elastic piece is connected between the driving button and the limiting piece;

the positioning clamping hook is arranged on the driving button and extends towards the other second end;

the positioning clamping table is arranged in the other second end and forms clamping fit with the positioning clamping hook when the two second ends are butted and matched; the drive button drives the positioning hook to be separated from the positioning clamping table when being pressed by external force so as to release clamping fit.

Preferably, the positioning hook is integrally formed on a sidewall of the actuating button and extends out of a port of the second end of the actuating button along a direction perpendicular to the moving direction of the actuating button.

Preferably, the second end of the positioning hook comprises a rectangular concave surface around the port, and the positioning hook comprises a hook end protruding on the rectangular concave surface.

Preferably, the other second end includes a rectangular boss disposed around a port of the second end, the rectangular boss is in matched abutment with the rectangular concave surface, and the positioning clamp is formed between an inner wall of the second end and the rectangular boss.

As a preferable scheme, a groove hole with an opening facing the limiting member is arranged in the driving button, one end of the elastic member is arranged in the groove hole, and the other end of the elastic member abuts against the limiting member; two button holes are formed in the side faces of two sides of the second end of the first end, and two groups of driving buttons and two groups of limiting pieces are arranged corresponding to the two button holes.

As a preferable scheme, the limiting part is a limiting baffle fixed on the inner wall of the second end of the limiting part through a screw structure, two fixing columns located at two sides of the button hole are arranged on the inner wall of the second end, and two ends of the limiting baffle are fixed on the two fixing columns through screw structures.

As a preferable scheme, one end of the driving button, opposite to the limiting member, is provided with a pair of open slots extending along the moving direction thereof, and the limiting member is adapted to be accommodated in the open slots; and an annular step is arranged on the side wall of the driving button.

As a preferred scheme, two rotating grooves are arranged on the first end, two rotating protrusions which are rotatably connected in the two rotating grooves are correspondingly arranged on the other first end, and the two rotating protrusions are connected with the two rotating grooves through rotating shafts.

As a preferred scheme, still including setting up in the last magnetic core in first shell portion, and setting up in the lower magnetic core in the second shell portion, and set up respectively coil structure on last magnetic core and the lower magnetic core, go up magnetic core and lower magnetic core and be the U-shaped structure respectively, the both ends of going up magnetic core and lower magnetic core are the laminating respectively between two first ends and two second ends and are linked to each other.

As an optimal selection scheme, be provided with the wiring groove on first shell or the second shell, be provided with a set of binding post in the wiring groove, it covers to rotate to be provided with on first shell or the second shell binding post's shroud, it is protruding to be provided with the buckle on the both sides side of shroud, it is fit for to correspond on the both sides lateral wall in wiring groove the protruding extrusion card of buckle goes into the draw-in groove structure.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the utility model provides an among the open-type current transformer, according to first shell and the two second ends of second shell keep fixed linking to each other through locking structure, the locking structure comprises drive button, locating part and elastic component, location pothook and locator card platform, this drive button can move and set up in one of them on the second end side and link to each other with the locating part through the elastic component, the effect of locating part is for provide atress support position when drive button extrudes the elastic component, thereby realize the elasticity press motion of this drive button, and the effect of drive button can drive the location pothook to break away from the locator card platform under the state of pressing, adopt the design of this scheme, can drive location pothook and location pothook to form the joint cooperation when two second ends are to closing the contact, thereby keep relative position locking with two second ends, make two shells closure form holistic current transformer and prevent to be opened at will; when the current transformer needs to be opened, the positioning clamping hook and the positioning clamping table can be driven to be separated in a tripping mode only by pressing the driving button, and therefore the two second ends can be opened in a rotating mode. This kind of current transformer's installation and split all are more convenient and fast, avoid adopting the locking mode of original hasp and boss outer joint again, and, the location pothook tightly colludes with the help of the elastic force of elastic component effect on drive button and supports at the locator card platform, and the cooperation locking is reliable, and difficult emergence is not hard up, and installation stability is good, and long service life promotes product performance.

2. The utility model provides an among the open-type current transformer, another the second end is including being provided with the rectangle boss around its port, and the pothook end according to the positioning pothook extends to rectangle concave surface department to and be formed with the locator card platform between rectangle boss and second end inner wall, this kind of structure setting, two second ends drive rectangle boss and rectangle concave surface when closing the contact and match continuously, drive simultaneously the extrusion of positioning pothook is crossed joint behind the rectangle boss and is arrived locator card bench to hold to two seconds and play the locking action, simple to operate is swift.

3. The utility model provides an among the open-type current transformer, one of which be provided with two fixed columns on the second end inner wall, the locating part is for being provided with a pair of notch through serving at actuating button and setting for the distance through screw structrual installation at two fixed column, the notch is followed actuating button's direction of movement extends the settlement distance, and the benefit of design like this lies in, and the effect of this kind of notch is pressed at actuating button and is moved the in-process and dodge the locating part, makes when actuating button is pressed towards one side removal near the locating part promptly the locating part holds in the notch, thereby avoids taking place the position interference between actuating button and the locating part at the pressing removal in-process, ensures that location pothook and locator card platform realize the separation of unbuckling under actuating button's drive, because the elastic component is by actuating button extrusion energy storage, can realize automatic re-setting under the effect of elastic component when this actuating button withdraws exogenic action.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.

Fig. 1 is a schematic plan view of an open-type current transformer according to the present invention;

FIG. 2 isbase:Sub>A schematic view ofbase:Sub>A partial cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of the first shell portion of the present invention;

fig. 4 is a schematic structural view of the second shell portion of the present invention;

fig. 5 is a schematic view of an installation structure of the locking structure of the present invention;

fig. 6 is a schematic view of the mounting structure of the cover cap of the present invention;

description of reference numerals: 1. a first housing portion; 11. an upper magnetic core; 12. a wiring slot; 13. a cover; 14. the buckle is protruded; 15. a slot structure; 16. a wiring terminal; 2. a second shell portion; 21. a lower magnetic core; 3. a first end; 31. a rotating groove; 32. rotating the projection; 4. a second end; 41. a rectangular concave surface; 42. a rectangular boss; 5. a drive button; 51. an open slot; 6. a limiting member; 61. a screw structure; 62. fixing a column; 7. an elastic member; 8. a positioning hook; 9. and (6) positioning the clamping table.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides an open type current transformer as shown in fig. 1-6, which comprises a first shell part 1 and a second shell part 2 which can be opened or closed in a rotating way, wherein two first ends 3 which are connected in a pivoting way are arranged between the first shell part 1 and the second shell part 2, and two second ends 4 which are fixedly connected through a locking structure when the first shell part and the second shell part are closed, the two first ends 3 are provided with a pair of opposite ports, the two second ends 4 are also provided with a pair of opposite ports, the two pairs of ports are respectively connected together in an involutory way when the two second ends 4 are locked, so as to form an integral closed type current transformer, the two second ends 4 are designed to be opened or closed relatively, the two second ends 4 can be opened in a rotating way for a certain range only by unlocking the locking structure, so that a lead connected with a load is directly placed into a middle cavity of the current transformer, and finally the two second ends 4 are locked, so that the lead connected with the load passes through the current transformer, and the threading process can be completed without detaching the lead from the load, so that an induced current can be generated by the current transformer.

The locking structure comprises a driving button 5, a limiting piece 6, an elastic piece 7 and a positioning clamping hook 8 and a positioning clamping table 9; wherein, the driving button 5 is movably arranged on the side surface of the second end 4 and extends into the second end 4; the limiting member 6 is fixed in the second end 4 and opposite to the driving button 5; the elastic piece 7 is connected between the driving button 5 and the limiting piece 6; the positioning hook 8 is arranged on the driving button 5 and extends towards the other second end 4; the positioning clamping table 9 is arranged in the other second end 4 and forms clamping fit with the positioning clamping hook 8 when the two second ends 4 are aligned, so that the two second ends 4 are kept in relative position locking; when the driving button 5 is pressed by external force, the positioning hook 8 is driven to be separated from the positioning clamping table 9 so as to release clamping fit, and at this time, the two second ends 4 can be opened in a relatively rotating mode.

The above embodiment is a core technical solution in this embodiment, according to the first shell portion 1 and the second shell portion 2, the two second ends 4 are kept fixedly connected through a locking structure, the locking structure is composed of a driving button 5, a limiting member 6, an elastic member 7, a positioning hook 8 and a positioning block 9, the driving button 5 is movably disposed on a side surface of one of the second ends 4 and is connected with the limiting member 6 through the elastic member 7, the limiting member 6 is used for providing a stressed supporting position when the driving button 5 presses the elastic member 7, so as to realize an elastic pressing motion of the driving button 5, and the driving button 5 is used for driving the positioning hook 8 to disengage from the positioning block 9 in a pressing state, by adopting the design of the present solution, when the two second ends 4 are in involutory contact, the positioning hook 8 and the positioning hook 8 are driven to form a snap fit, so as to keep the two second ends 4 at opposite positions to lock, so that the two shell portions are closed to form an integral current transformer and are prevented from being opened; when the current transformer needs to be opened, the driving button 5 is pressed to drive the positioning hook 8 and the positioning clamping table 9 to be separated in a tripping manner, so that the two second ends 4 can be opened in a rotating manner. This kind of current transformer's installation and split are all more convenient and fast, avoid adopting the locking mode of original hasp and boss outer joint again, and, location pothook 8 tightly colludes with the help of the elastic force of elastic component 7 effect on drive button 5 and supports at location ka tai 9, and the cooperation locking is reliable, and difficult emergence is not hard up, and installation stability is good, long service life promotes product performance.

The arrangement of the positioning hooks and the positioning abutments is described in detail below with reference to fig. 2-5:

positioning hook 8 integrated into one piece is in on the lateral wall of actuating button 5, and follow the perpendicular to actuating button 5's moving direction extends to one of it outside the port of second end 4, the positioning hook 8 of design like this can follow actuating button 5 moves, consequently, when two second ends 4 keep the joint fixed through positioning hook 8 and positioning card platform 9, through pressing actuating button 5 drives positioning hook 8 produces the displacement, so that positioning hook 8 breaks away from out from positioning card platform 9 in order to relieve the joint cooperation between the two.

As shown in fig. 3-4, the second end 4 of the first end includes a rectangular concave surface 41 arranged around the port thereof, the positioning hook 8 has a hook end extending out of the rectangular concave surface 41, wherein the second end 4 of the second end includes a rectangular boss 42 arranged around the port thereof, the positioning clamp table 9 is formed between the inner wall of the second end 4 and the rectangular boss 42, and the rectangular boss 42 is provided with a guide inclined surface for guiding the positioning hook 8 to be smoothly clamped into the positioning clamp table 9, so that the two second ends 4 are oppositely contacted to drive the rectangular boss 42 to be abutted against the rectangular concave surface 41, and simultaneously the positioning hook 8 is driven to extrude to pass through the rectangular boss 42 and then to be clamped onto the positioning clamp table 9, thereby locking the two second ends 4, and being convenient and fast to install.

The following describes the arrangement of the actuating button, the elastic member and the limiting member in detail with reference to fig. 2 to 4:

in this embodiment, in order to enable the first casing portion 1 and the second casing portion 2 to achieve the double-locking effect in the closed state, two button holes are correspondingly formed in the two side surfaces of the second end 4, and the driving button 5 and the limiting member 6 are provided in two groups corresponding to the two button holes, that is, two driving buttons 5 are inserted into the two button holes in the two sides of the current transformer, and two positioning hooks 8 are provided on the two driving buttons 5. The driving button 5 is internally provided with a groove hole with an opening facing the limiting part 6, the elastic part 7 is a circular spring, one end of the elastic part 7 is arranged in the groove hole, and the other end of the elastic part is abutted against the limiting part 6, so that the elastic part 7 is limited and installed between the driving button 5 and the limiting part 6, and the elastic part is abutted against the inner port of the button hole through the positioning clamping hook 8 to limit the driving button 5 to be separated from the button hole under the action of the elastic part 7, so that the driving button 5 is limited in the button hole.

As a preferred embodiment, the limiting member 6 is a limiting baffle fixed on the inner wall of one of the second ends 4 by a screw structure 61, the inner wall of the second end 4 is provided with two fixing posts 62 located at two sides of the button hole, and two ends of the limiting baffle are fixed on the two fixing posts 62 by the screw structure 61, wherein one end of the driving button 5 opposite to the limiting member 6 is provided with a pair of open slots 51 extending along the moving direction thereof, and the limiting member 6 is adapted to be accommodated in the open slots 51, which is advantageous in that the slotted opening functions to avoid the limiting member during the pressing movement of the driving button 5, i.e. when the driving button 5 is pressed to move toward one side close to the limiting member, the limiting member is accommodated in the slotted opening, thereby avoiding the position interference between the driving button 5 and the limiting member 6 during the pressing movement, ensuring that the positioning hook 8 and the positioning catch 9 are disengaged under the driving of the driving button 5, and since the elastic member 7 is pressed by the driving button 5, the external force of the driving button 5 can be automatically reset under the action of the external force of the elastic member 7.

As shown in fig. 3, two rotation grooves 31 are disposed on one of the first ends 3, two rotation protrusions 32 rotatably connected in the two rotation grooves 31 are correspondingly disposed on the other first end 3, the two rotation protrusions 32 are disposed on both sides of the first end 3, and the two rotation protrusions 32 are connected with the two rotation grooves 31 through a rotation shaft, thereby achieving a rotatable arrangement between the first shell portion 1 and the second shell portion 2.

The current transformer provided by the embodiment further comprises an upper magnetic core 11 arranged in the first shell part 1, a lower magnetic core 21 arranged in the second shell part 2, and coil structures respectively arranged on the upper magnetic core 11 and the lower magnetic core 21, wherein at least one spring is arranged between the lower magnetic core 21 and the second shell part 2, the spring is right for applying pressure to the lower magnetic core 21 close to the upper magnetic core 11 in the direction, the upper magnetic core 11 and the lower magnetic core 21 are respectively in a U-shaped structure, and when two second ends 4 of the first shell part 1 and the second shell part 2 are fixedly connected through a locking structure, two ends of the upper magnetic core 11 and the lower magnetic core 21 are respectively attached and connected between two first ends 3 and two second ends 4.

As shown in fig. 6, a wiring groove 12 is provided on the first shell portion 1 or the second shell portion 2, a set of wiring terminal 16 is provided in the wiring groove 12, and a set of threading holes are provided on the side walls on both sides of the wiring groove 12, a cover 13 covering the wiring terminal 16 is rotatably provided on the first shell portion 1 or the second shell portion 2, buckle protrusions 14 are provided on both side edges of the cover 13, a slot structure 15 suitable for the buckle protrusions 14 to press the card to be inserted is correspondingly provided on the side walls on both sides of the wiring groove 12, the buckle protrusions 14 are cylindrical protrusions, when the cover 13 is closed to cover the wiring terminal 16, the cover 13 in a closed state is positioned through the cooperation of the buckle protrusions 14 and the slot structure 15, and the cover 13 is prevented from randomly overturning on the first shell portion 1 or the second shell portion 2.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. Open-type current transformer comprising a first (1) and a second (2) rotatably openable or closable casing part, between which casing part (1, 2) two first ends (3) pivotally connected are provided, and two second ends (4) held fixedly connected when closed by a locking structure, the two first ends and the two second ends each having a pair of ports, characterized in that the locking structure comprises:

an actuation button (5) movably arranged on the side of one of said second ends (4) and projecting into said second end (4);

a stop member (6) fixed in one of said second ends (4) and opposite to said actuation button (5);

the elastic piece (7) is connected between the driving button (5) and the limiting piece (6);

the positioning clamping hook (8) is arranged on the driving button (5) and extends towards the other second end (4);

the positioning clamping table (9) is arranged in the other second end (4) and forms clamping fit with the positioning clamping hook (8) when the two second ends (4) are aligned; when the drive button (5) is pressed by external force, the positioning hook (8) is driven to be separated from the positioning clamping table (9) so as to release clamping fit.

2. The open-type current transformer according to claim 1, wherein:

the positioning hook (8) is integrally formed on the side wall of the drive button (5) and extends out of the port of the second end (4) of the drive button (5) along the direction perpendicular to the moving direction of the drive button.

3. The open-type current transformer according to claim 2, wherein: the second end (4) of the positioning hook comprises a rectangular concave surface (41) arranged around the port of the positioning hook, and the positioning hook (8) is provided with a hook end protruding on the rectangular concave surface (41).

4. The open-type current transformer according to claim 3, wherein: the other second end (4) comprises a rectangular boss (42) arranged around the port of the second end, the rectangular boss (42) is abutted to the rectangular concave surface (41) in a matched mode, and the positioning clamping table (9) is formed between the inner wall of the second end (4) and the rectangular boss (42).

5. An open-type current transformer according to any one of claims 1-4, characterized in that: a groove hole with an opening facing the limiting piece (6) is formed in the driving button (5), one end of the elastic piece (7) is arranged in the groove hole, and the other end of the elastic piece is abutted against the limiting piece (6); two button holes are formed in the side faces of two sides of the second end (4), and two groups of driving buttons (5) and two groups of limiting pieces (6) are arranged corresponding to the two button holes.

6. The open-type current transformer according to claim 5, wherein: the limiting piece (6) is a limiting baffle fixed on the inner wall of the second end (4) of the limiting piece through a screw structure (61), two fixing columns (62) located on two sides of the button hole are arranged on the inner wall of the second end (4), and two ends of the limiting baffle are fixed on the two fixing columns (62) through the screw structure (61).

7. The open-type current transformer according to claim 6, wherein: one end of the driving button (5) opposite to the limiting piece (6) is provided with a pair of open grooves (51) in an extending mode along the moving direction of the driving button, and the limiting piece (6) is suitable to be contained in the open grooves (51).

8. The open-type current transformer according to claim 6 or 7, wherein: one of the two rotating grooves (31) are formed in the first end (3), the other rotating protrusion (32) which is rotatably connected to the two rotating grooves (31) is correspondingly arranged on the first end (3), and the two rotating protrusions (32) are connected with the two rotating grooves (31) through rotating shafts.

9. The open-type current transformer according to claim 1, wherein: still including setting up last magnetic core (11) in first shell (1) and setting are in lower magnetic core (21) in second shell (2) and set up respectively go up coil structure on magnetic core (11) and lower magnetic core (21), it is the U-shaped structure respectively with lower magnetic core (21) to go up magnetic core (11), makes the both ends of going up magnetic core (11) and lower magnetic core (21) are laminated between two first ends (3) and two second ends (4) respectively and are linked to each other.

10. The open-type current transformer according to claim 9, wherein: be provided with wiring groove (12) on first shell (1) or second shell (2), be provided with a set of binding post (16) in wiring groove (12), it covers to rotate on first shell or the second shell cover (13) of binding post (16), be provided with buckle arch (14) on the both sides side of cover (13), it is fit for to correspond on the both sides lateral wall in wiring groove (12) buckle arch (14) extrusion card is gone into draw-in groove structure (15).