CN216981517U - Base electric connection structure of surge protector - Google Patents

Abstract

The utility model discloses a base electric connection structure of a surge protector, which relates to the technical field of surge protectors and is used for protecting equipment or a system from being damaged by voltage impact, and the base electric connection structure comprises a surge protection device, wherein output wiring ends of first three protector bodies are electrically connected in series and electrically connected with an input wiring end of a fourth protector body, an output wiring end of the fourth protector body is electrically connected with a PE wire, and the protector body is also provided with a locking device, and the locking device comprises: a clamping assembly; push-pull subassembly and plug assembly. The protector body is provided with the 3+1 wiring mode, the breakdown voltage can be increased on the basis of certain voltage by the wiring mode, the lightning protection and transient overvoltage capacity is improved, the protection effect is better achieved, the use cost can be effectively reduced, and the designed locking device can be conveniently and quickly installed and detached when a wire and a plurality of protector bodies are arranged on the protector body and are adjacent to each other.

Description

Base electric connection structure of surge protector

Technical Field

The utility model relates to the technical field of surge protectors, in particular to a base electric connection structure of a surge protector.

Background

The photovoltaic system is not specially provided with a grounding device and is connected with a civil lightning protection system to form a public grounding device, the photovoltaic system comprises a flat plate system and a sun tracking system at the present stage of our country, wherein the breakdown voltage of the sun tracking system in the photovoltaic system is above 1000V, when a non-isolated inverter or a box is adopted to have poor isolation, the DC voltage is required to be returned to the AC voltage to increase the breakdown voltage prevention capability, the surge protector is used for limiting the transient overvoltage entering a power line and a signal transmission line within the voltage range which can be borne by equipment or a system, or discharging strong lightning current to the ground to protect the protected equipment or the system from being damaged by impact.

To the problem that breakdown voltage rose in the system, need carefully consider in the design, otherwise can lead to the phenomenon of on-the-spot surge protector breakdown when taking load operation to take place, can directly choose for use breakdown voltage for being greater than 1000V's surge protector when dealing with this kind of phenomenon tradition design, can't predict its specific numerical value because of breakdown voltage is unstable, the lectotype is inconvenient, increase cost simultaneously, and current surge protector buckle structure function singleness, install unable convenient and fast's installation and dismantlement when wire and a plurality of surge protector are adjacent on surge protector.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electrical connection structure of a base of a surge protector, which aims to solve the problems that the traditional design of the existing surge protector for the breakdown phenomenon in the background art can directly select the surge protector with the breakdown voltage of more than 1000V, the specific value cannot be predicted due to the unstable breakdown voltage, the type selection is inconvenient, the cost is increased, the buckling structure of the existing surge protector has a single function, and the installation and the disassembly of a lead wire and a plurality of surge protectors which are adjacent cannot be convenient and rapid.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a base electric connection structure of a surge protector, which is used for protecting equipment or a system from being damaged by voltage impact and comprises a surge protection device, wherein the surge protection device comprises four protector bodies, a three-phase live wire is sequentially and electrically connected with input wiring ends of the first three protector bodies, output wiring ends of the first three protector bodies are electrically connected in series and electrically connected with input wiring ends of the fourth protector body, meanwhile, the output wiring end of the fourth protector body is electrically connected with a PE wire, a locking device is also arranged on the protector body, and the locking device comprises:

the clamping assembly comprises a clamping plate which is pivotally connected to the protector body, the clamping plate is provided with a clamping end and a driving end, and the driving end is provided with a driving groove hole;

the push-pull assembly comprises push-pull plates symmetrically arranged at the upper side and the lower side of the protector body and push-pull rod pieces symmetrically arranged at one side of the push-pull plates, locking slots are symmetrically formed in the push-pull plates, and a driving shaft rod inserted into the driving slot hole is further arranged between the other ends of the two push-pull rod pieces;

the plug-in assembly comprises a locking plug-in block movably plugged in the locking slot and an elastic piece positioned on the other side of the locking plug-in block.

Preferably, the protector body rear side is opened and is equipped with the mounting groove, the centre gripping groove has still been seted up on the inner wall of both sides about the mounting groove, the centre gripping groove has the holding surface, grip block pivotal connection in on the inner wall in centre gripping groove, just the exposed core extends to inside the mounting groove.

Preferably, a front slot is formed in the front side of the protector body, the push-pull plate is movably inserted into the front slot, and a push-pull hole located outside the protector body is further formed in the push-pull plate.

Preferably, jacks are symmetrically formed between the front slot and the clamping groove, the push-pull rod piece comprises a push-pull main rod movably inserted into the jacks and push-pull auxiliary rods extending into the clamping groove, and the driving shaft rod is mounted between ports of the two push-pull auxiliary rods, which are located in the clamping groove.

Preferably, the height of the push-pull main rod is consistent with that of the push-pull plate, and the axial plane of the push-pull main rod coincides with that of the locking slot.

Preferably, the inside still symmetry of protector body is seted up and is located the locking chamber directly over the preceding slot, the locking chamber with set up the locking hole between the preceding slot.

Preferably, one end of the locking plug is inserted into the locking cavity, and the other end of the locking plug extends into the locking hole and is of an arc structure.

Preferably, the plug assembly further comprises a reset plate mounted on the locking plug block and plugged into the inner port of the locking cavity, and the elastic element is located between the reset plate and the inner wall of the locking cavity.

Compared with the prior art, the above one or more technical schemes have the following beneficial effects:

the protector body is connected in a 3+1 wiring mode, the breakdown voltage can be increased on the basis of a certain voltage in the wiring mode, the lightning protection and transient overvoltage capacity is improved, the protection effect is better achieved, the use cost can be effectively reduced, and the designed locking device can be conveniently and quickly installed and detached when a wire is installed on the protector body and a plurality of protector bodies are adjacent.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a side cross-sectional structural view of the present invention;

FIG. 3 is an enlarged view of point D in FIG. 2 according to the present invention;

FIG. 4 is a schematic perspective view in partial cross-section of the present invention;

FIG. 5 is a perspective view of a clamping assembly according to the present invention;

FIG. 6 is a perspective view of the push-pull assembly of the present invention;

FIG. 7 is a schematic view of a photovoltaic system circuit according to the present invention;

fig. 8 is a schematic diagram of a wiring structure of the surge protection device of the present invention.

In the figure:

100. a surge protection device; 101. installing a guide rail; 110. a protector body; 111. mounting grooves; 112. a clamping groove; 113. a support surface; 114. a front slot; 115. pushing and pulling the hole; 116. a jack; 117. a lock cavity; 118. a locking hole; 200. a locking device; 210. a clamping assembly; 211. a clamping plate; 212. a clamping end; 213. a driving end; 214. a drive slot; 220. a push-pull assembly; 221. a push-pull plate; 222. a push-pull rod member; 223. locking the slot; 224. a drive shaft; 225. pushing and pulling the main rod; 226. pushing and pulling the auxiliary rod; 230. a plug-in assembly; 231. locking the insert block; 232. an elastic member; 233. a reset plate.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1 to 8, in order to solve the problem of the breakdown voltage increase in the system, careful consideration needs to be given in the design, otherwise, the phenomenon of the breakdown of the on-site surge protector during the operation with load may occur, when the conventional design is designed to deal with the phenomenon, the surge protector with the breakdown voltage of more than 1000V is directly selected, the specific value cannot be predicted due to the unstable breakdown voltage, the selection is inconvenient, and the cost is increased, in order to avoid the situation, the method of increasing the breakdown voltage and the working voltage by changing the wiring manner can be adopted to avoid the occurrence of the situation, and the use cost is reduced, specifically, the utility model provides a base electrical connection structure of the surge protector, which is used for protecting the equipment or the system from the voltage impact and damage, and comprises a surge protection device 100, wherein the surge protection device 100 comprises four protector bodies 110, wherein a live wire is electrically connected to the input terminals of the first three protector bodies 110 in sequence, the output terminals of the first three protector bodies 110 are electrically connected in series and electrically connected to the input terminal of the fourth protector body 110, and the output terminal of the fourth protector body 110 is electrically connected with the PE wire.

In a photovoltaic system, the surge protection device 100 of the present invention is applied to the position shown in fig. 7, a light source is adopted through an array, a direct current is converted into an alternating current by using an inverter, an alternating low voltage 315V is converted into an alternating high voltage 35KV by using a step-up transformer, and a surge protector is required to be arranged on the low voltage side of the step-up transformer in the process, so that the instantaneous overvoltage fleeing into a power line and a signal transmission line is limited within the voltage range which can be borne by equipment or a system, or strong lightning current is discharged into the ground, and the protected equipment or system is protected from being damaged by impact.

Fig. 8 is surge protection device 100's mode of connection, adopts 3+1 mode of connection, and this mode of connection multiplicable breakdown voltage on certain voltage's basis, the better guard action that plays, the input terminal of preceding three protector body 110 inserts step-up transformer low-voltage side output, the input terminal of preceding three protector body 110 establishes ties a unipolar surge protector of looks again ground connection on the basis of former ground connection simultaneously to reach increase resistance, increase and prevent the effect of overvoltage limiting capacity.

As shown in fig. 1, 2, 4 and 5, in order to conveniently and quickly mount the surge protection device 100 on the mounting rail 101, or to mount wires on both the input terminal and the output terminal of the protector body 110, in the case that it is necessary to move the position of the protector body 110 on the mounting rail 101 according to actual mounting conditions, the protector body 110 is further provided with a locking device 200, the locking device 200 includes a clamping assembly 210, the clamping assembly 210 includes a clamping plate 211 pivotally connected to the protector body 110, the clamping plate 211 has a clamping end 212 and a driving end 213, the driving end 213 is provided with a driving slot 214, the rear side of the protector body 110 is provided with a mounting groove 111, inner walls of the upper and lower sides of the mounting groove 111 are further provided with clamping grooves 112, the clamping grooves 112 have supporting surfaces 113, the clamping plate 211 is pivotally connected to inner walls of the clamping grooves 112, and the clamping end 212 extends into the mounting groove 111, the clamping plate 211 is turned over to the position that the clamping end 212 abuts against the mounting rail 101 at the pivot connection point of the clamping groove 112 when the driving end 213 is acted by force, and the clamping end 212 abuts against the mounting rail 101 more stably under the supporting action of the supporting surface 113 by the driving end 213.

Further referring to fig. 6, in order to make the clamping plate 211 turn over to the clamping end 212 to abut against the mounting rail 101 at the pivot connection point with the clamping groove 112, the locking device 200 further includes a push-pull assembly 220, the push-pull assembly 220 includes push-pull plates 221 symmetrically disposed at the upper and lower sides of the protector body 110 and push-pull rods 222 symmetrically disposed at one side of the push-pull plates 221, locking slots 223 are symmetrically disposed on the push-pull plates 221, a driving shaft 224 inserted into the driving slot 214 is further disposed between the other ends of the push-pull rods 222, a front slot 114 is disposed at the front side of the protector body 110, the push-pull plates 221 are movably inserted into the front slot 114, push-pull holes 115 located outside the protector body 110 are further disposed on the push-pull plates 221, insertion holes 116 are symmetrically disposed between the front slot 114 and the clamping groove 112, the push-pull rods 222 include a push-pull main rod 225 movably inserted into the insertion holes 116 and a push-pull auxiliary rod 226 extending into the clamping groove 112, the height of the push-pull main rod 225 is the same as that of the push-pull plate 221, the axial surfaces of the push-pull main rod 225 and the locking slot 223 coincide, the driving shaft rod 224 is installed between the two push-pull auxiliary rods 226 located between the ports of the clamping slot 112, the push-pull plate 221 is pushed towards the front slot 114, so that the push-pull main rod 225 and the push-pull auxiliary rods 226 can move towards the direction of the clamping plate 211 synchronously, at the moment, the driving shaft rod 224 can apply acting force to the driving end 213 of the clamping plate 211, the clamping plate 211 is driven to be overturned to the clamping end 212 to abut against the installation guide rail 101 through the pivot connection point of the clamping plate 211 and the clamping slot 112, and meanwhile, the driving shaft rod 224 can slide in the driving slot 214 in the overturning process of the clamping plate 211.

As further shown in fig. 2 and fig. 3, in order to lock the clamping plate 211 at a position where the clamping end 212 abuts against the mounting rail 101, the locking device 200 further includes an insertion assembly 230, the insertion assembly 230 includes a locking insert 231 movably inserted into the locking insert 223 and an elastic member 232 located at the other side of the locking insert 231, the protector body 110 further symmetrically defines a locking cavity 117 located directly above the front insert 114, a locking hole 118 is defined between the locking cavity 117 and the front insert 114, one end of the locking insert 231 is inserted into the locking cavity 117, the other end of the locking insert 231 extends into the locking hole 118 and is of an arc structure, the insertion assembly 230 further includes a reset plate 233 installed at an internal port of the locking insert 231 inserted into the locking cavity 117, the elastic member 232 is located between the reset plate 233 and an inner wall of the locking cavity 117, when the push-pull plate 221 is pushed toward the front insert 114 until the clamping end 212 of the clamping plate 211 abuts against the mounting rail 101, the reset plate 233 drives the locking plug 231 to be inserted into the locking slot 223 of the push-pull plate 221 under the elastic force of the elastic member 232, so as to lock the push-pull plate 221 at the position, and synchronously lock the clamping plate 211 at the position where the clamping end 212 abuts against the mounting rail 101, so as to mount the protector body 110 on the mounting rail 101.

As shown in fig. 1 to 6, when actually installing the surge protection device 100, first, the two push-pull plates 221 on the protector body 110 are pulled to the outside of the front insertion slot 114 through the push-pull holes 115, at this time, the push-pull plates 221 drive the push-pull main rod 225 and the push-pull auxiliary rod 226 to move in the direction of the front insertion slot 114 synchronously, at the same time, the push-pull plates 221 push the locking plugs 231 out of the locking insertion slots 223, at this time, the locking plugs 231 contract inside the locking holes 118 and simultaneously drive the reset plate 233 to apply an acting force to the elastic members 232 to deform the elastic members 232, during the process of pulling the push-pull plates 221 to the outside of the front insertion slot 114, the push-pull plates 221 disengage from the locking plugs 231, at this time, the locking plugs 231 abut against the push-pull main rod 225 to maintain the state of contracting inside the locking holes 118, and at the same time, during the process of moving the push-pull auxiliary rod 226 in the direction of the front insertion slot 114, the driving shaft 224 is driven to apply an acting force to the driving end 213 of the holding plate 211, and driving the clamping plate 211 to turn over from the pivot connection point with the clamping groove 112 to the clamping end 212 to be separated from the mounting groove 111, at this time, the mounting groove 111 of the protector body 110 can be lapped on the mounting guide rail 101, then the push-pull plate 221 is pushed towards the interior of the front slot 114 through the push-pull hole 115, at this time, the push-pull plate 221 drives the push-pull main rod 225 and the push-pull auxiliary rod 226 to move towards the direction of the clamping groove 112 synchronously, in the process of pushing the push-pull plate 221 towards the interior of the front slot 114, the push-pull main rod 225 is separated from the locking insert block 231, then the locking insert block 231 is abutted against the push-pull plate 221, and when the push-pull plate 221 moves to the position under the locking slot 223, the reset plate drives the locking insert block 231 to be inserted into the locking insert slot 223 under the action force of the elastic member 232 restoring deformation, and simultaneously drives the driving shaft lever 224 to apply an action force to the driving end 213 of the clamping plate 211 in the process of the push-pull rod 226 moving towards the clamping groove 112, and the clamping plate 211 is driven to turn over to the clamping end 212 to abut on the installation guide rail 101 through the pivot connection point with the clamping groove 112, and meanwhile, the driving end 213 of the clamping plate 211 synchronously abuts on the supporting surface 113, and at this time, the protector body 110 can be stably installed on the installation guide rail 101.

Further referring to fig. 1 and 8, when the input terminal and the output terminal of the protector body 110 are both provided with wires, the clamping end 212 of the clamping plate 211 can be separated from the mounting rail 101 by slightly pulling the push-pull plate 221 to the outside of the front slot 114, at this time, the clamping plate 211 is in an inclined state, and the mounting rail 101 is still located in an inclined included angle formed by the two clamping plates 211, at this time, the protector body 110 can be slid on the mounting rail 101 according to an actual mounting position, and after the sliding is completed, the push-pull plate 221 is slightly pulled to the inside of the front slot 114 to the original position; when the protector body 110 needs to be detached from the installation guide rail 101, the push-pull plate 221 is pulled to the position where the clamping end 212 of the clamping plate 211 is separated from the installation groove 111 towards the front slot 114, the structural design can effectively solve the problem that when the wires installed by the input terminal and the output terminal of the protector body 110 are connected in sequence with the plurality of protector bodies 110, the protector body 110 is difficult to install and detach, and the protector is convenient, rapid, practical, simple in structure and effective in cost reduction.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A surge protector's base electrical connection structure for protection equipment or system is not damaged by voltage impact, including surge protection device (100), its characterized in that: surge protection device (100) includes four protector bodies (110), and wherein, the three-phase live wire is electric connection in proper order in the input terminal of preceding three protector body (110), and the output terminal electric property series connection of preceding three protector body (110) in electric connection in the input terminal of fourth protector body (110), and the output terminal electric connection of fourth protector body (110) has the PE line simultaneously, still be provided with locking means (200) on protector body (110), locking means (200) include:

the clamping assembly (210) comprises a clamping plate (211) which is pivotally connected to the protector body (110), the clamping plate (211) is provided with a clamping end (212) and a driving end (213), and the driving end (213) is provided with a driving slot hole (214);

the push-pull assembly (220) comprises push-pull plates (221) symmetrically arranged on the upper side and the lower side of the protector body (110) and push-pull rods (222) symmetrically arranged on one sides of the push-pull plates (221), locking slots (223) are symmetrically formed in the push-pull plates (221), and a driving shaft rod (224) inserted into the driving groove hole (214) is further arranged between the other ends of the two push-pull rods (222);

the plug-in assembly (230) comprises a locking plug block (231) movably plugged in the locking slot (223) and an elastic piece (232) positioned on the other side of the locking plug block (231).

2. The electrical connection structure of the base of the surge protector of claim 1, wherein: protector body (110) rear side is opened and is equipped with mounting groove (111), centre gripping groove (112) have still been seted up on the inner wall of both sides about mounting groove (111), centre gripping groove (112) have holding surface (113), grip block (211) pivot connection in on the inner wall of centre gripping groove (112), just hold end (212) extend to inside mounting groove (111).

3. The electrical connection structure of the base of the surge protector of claim 2, wherein: the front side of the protector body (110) is provided with a front slot (114), the push-pull plate (221) is movably inserted into the front slot (114), and the push-pull plate (221) is further provided with a push-pull hole (115) located outside the protector body (110).

4. The electrical connection structure of the base of the surge protector of claim 3, wherein: the front inserting groove (114) and the clamping groove (112) are symmetrically provided with inserting holes (116), the push-pull rod piece (222) comprises a push-pull main rod (225) movably inserted into the inserting holes (116) and push-pull auxiliary rods (226) extending into the clamping groove (112), and the driving shaft rod (224) is arranged between the two ports, located in the clamping groove (112), of the push-pull auxiliary rods (226).

5. The electrical connection structure of the base of the surge protector of claim 4, wherein: the height of the push-pull main rod (225) is consistent with that of the push-pull plate (221), and the axial plane of the push-pull main rod (225) is coincident with that of the locking slot (223).

6. The electrical connection structure of the base of the surge protector of claim 4, wherein: the protector is characterized in that a locking cavity (117) located right above the front slot (114) is symmetrically formed in the protector body (110), and a locking hole (118) is formed between the locking cavity (117) and the front slot (114).

7. The electrical connection structure of the base of the surge protector of claim 6, wherein: one end of the locking plug block (231) is inserted into the locking cavity (117), and the other end of the locking plug block (231) extends into the locking hole (118) and is of an arc structure.

8. The electrical connection structure for the base of the surge protector of claim 7, wherein: the plug-in assembly (230) further comprises a reset plate (233) which is installed on the locking plug block (231) and is plugged into the inner port of the locking cavity (117), and the elastic piece (232) is located between the reset plate (233) and the inner wall of the locking cavity (117).

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