CN204741126U - a surge protector - Google Patents

Abstract

The utility model discloses a surge protective device, but the plug module in its frame on can being fixed in the ground connection guide rail and the insertion machine seat, the plug module includes the casing, with the bottom of casing joint to and be on a parallel with both sides face around the casing, set up two function circuit board in the casing, casing top face is the both ends high arcwall face that varies about for, two function circuit board upper end shapes are the arc that corresponds with casing top facial features, the frame includes frame casing, upper cover and linking module, linking module includes bridge part, ground spring spare and two sets of connection terminal, and each is organized the connection terminal and is installed by the symmetry respectively and form with two sets of wiring insertss of lateral part in the casing, the bridge part comprises the spring bluff piece of connecting the inserts of respectively working a telephone switchboard and the bridging copper sheet of installing both sides portion around the casing respectively, ground spring spare is installed in the bottom of casing, be equipped with the mounting groove that corresponds installation wiring inserts, spring bluff piece, bridging copper sheet and ground spring spare on the casing respectively. The utility model discloses assembly efficiency improves.

Description

a surge protector

technical field

The utility model relates to the technical field of surge protection for power supply systems and electrical equipment, in particular to a surge protector.

Background technique

Surge protector is an electronic device that can provide safety protection for various electronic equipment, instruments and meters, and communication lines. When the electrical circuit or communication line suddenly generates a peak current or voltage due to external interference, the surge protector can conduct the shunt in a very short time, so as to avoid the damage of the surge to other equipment in the circuit.

The surge protector is generally composed of a plug-in module, a frame and a ground contact. The functional circuit board is set on the plug-in module, and the terminal for connecting with the protected equipment is set on the frame. The plug-in module is inserted into the frame. , the functional circuit board can be connected to the protected equipment to realize the surge protection function. However, the existing surge protector still has the defects that the plug-in module is easy to be reversed, the structure of the frame is relatively scattered, and the efficiency of the assembly process is low.

Contents of the invention

The purpose of the utility model is to provide a surge protector, the assembly direction of the plug-in module and the insertion direction of the insertion machine base are obvious, it is not easy to reversely insert, the structure of the machine base is more concise, the assembly is convenient, and the efficiency is high.

The technical solution adopted by the utility model is specifically: a surge protector, which is used to connect with the row terminal structure to suppress the surge on the line of the row terminal structure; the surge protector includes a surge protector that can be fixed on the ground rail frame and pluggable modules that can be inserted into the frame; where:

The plug-in module includes a shell, a bottom cover that is snapped into the shell, and two functional circuit boards that are parallel to the front and rear sides of the shell and are arranged in the shell; the lower end of the functional circuit board is provided with claws, and the bottom cover has a Positioning parts for fixed function circuit boards, and positioning holes for the claws to pass through;

The top surface of the housing is an arc-shaped surface with unequal heights at the left and right ends; the shape of the top of the two-function circuit board is an arc corresponding to the top surface of the housing;

The lower ends of the left and right sides of the housing are respectively provided with guide edges, and the widths of the guide edges on both sides are different;

The machine base includes a machine base shell, an upper cover and a connection module; the upper cover is provided with a through hole for the above-mentioned claw piece and the guide edge to pass through; the machine base shell is provided with a guide groove suitable for the above-mentioned guide edge;

The connection module includes:

The two sets of terminal blocks used to connect the row terminal structure are symmetrically installed on the front and rear sides of the machine base shell, and each set of terminal blocks is composed of two sets of wiring inserts symmetrically installed on the same side of the machine base shell. ;

The bridging part is composed of spring claws connecting the wiring inserts and bridging copper sheets respectively installed on the front and rear sides of the machine base housing. When the base is not inserted, the current passes through the spring claws and the bridging pieces to form a loop; when the plug-in module is inserted into the base, the claws of the functional circuit board are inserted between the spring claws and the bridging copper pieces, and the current passes through The spring claws are electrically connected with the claws, forming a circuit through the functional circuit board;

The grounding spring used to connect the claws of the above-mentioned two-function circuit board and the guide rail is installed on the bottom of the machine base shell;

Mounting grooves for correspondingly installing the above-mentioned wiring inserts, spring claws, bridging copper sheets and grounding springs are respectively provided on the housing of the machine base.

The arc-shaped design of the housing and the functional circuit board in the plug-in module of the utility model makes the direction of the functional circuit board clear when the plug-in module itself is assembled, and will not be reversely inserted; combined with the setting of the guide edge, the plug-in module is inserted into the machine base It is also not easy to be inserted backwards; when assembling the base, each component in the connection module can be fixed and installed in the corresponding installation groove in the housing, and then the upper cover is covered from above. , and then connected and locked with the guide rail. The installation process is simple and efficient.

Usually, the top of the plug-in module housing of the surge protector is used to mark some relevant parameters of the surge protector, but it is difficult to ensure that these marks are defaced or even worn off during long-term use. In order to protect these signs from wear and tear, the top of the housing of the utility model is also provided with a transparent cover, which is rotatably connected to one side of the upper end of the housing.

The surge protector can be used for surge protection in different application environments or different equipment objects. In order to distinguish surge protectors for various application environments or equipment objects, the utility model also includes a marking strip, which is embedded in the shell top part. It can be distinguished by setting a variety of identification bar colors.

In order to further prevent reverse insertion, the left and right sides of the housing of the utility model are also provided with guide grooves respectively. The guide groove is compatible with the guide boss.

The positioning member for fixing the claws of the functional circuit board is a positioning boss arranged on the front and rear sides of the bottom cover and separates two adjacent claws of the functional circuit board. The claw piece can only move up and down under the restriction of the positioning member, and at the same time, the whole functional circuit board is fixed.

The clamping form of the bottom cover and the housing in the utility model can be as follows: the bottom cover is U-shaped, hooks are respectively provided on the two side arms of the U-shaped bottom cover, and hooks corresponding to the above-mentioned hooks are respectively provided on both sides of the housing. Adapted hook holes.

In the base of the utility model, the number of wiring inserts in each group of wiring inserts is 2; in the bridging part, a group of bridging copper sheets are respectively installed on the front and rear sides of the housing, and each group of bridging copper sheets contains a long bridging copper sheet. One piece and a short bridging copper piece, the bridging copper piece is composed of two copper pieces and a connecting bridge connecting the two copper pieces, the long bridging copper piece is located on the periphery of the short bridging copper piece; there is a card slot for fixing the copper piece on the shell , the connecting bridge has a bent portion, so that when the bridging copper sheet is inserted into the casing from above the casing, the copper sheet can be inserted into the slot. The bridging copper sheet is inserted and installed from the top of the shell, which is more convenient to operate.

Furthermore, the grounding spring includes 2 upper spring claws for contacting the connecting claws of the two-function circuit board, 2 lower spring claws and a middle buckle for contacting the guide rail, and the two upper spring claws are located at the front and back of the grounding spring On both sides, the two lower spring claws are located on the left and right sides of the grounding spring.

The two sides of the shell of the plug-in module of the utility model are provided with second hooks and push-off pressure blocks, and the two sides of the upper cover of the machine base are provided with hook grooves that can be engaged with the second hooks, so that the plug-in module and the machine base The insertion and connection between them are tight; the second hook can be pushed out of the hook groove by squeezing the pushing block, so that the plug-in module can be pulled out from the machine base.

The beneficial effects of the utility model are: by setting the arc-shaped top of the plug-in module and the functional circuit board, it is ensured that the assembly direction of the plug-in module is clear and will not be reversed; When the plug-in module is inserted into the base, it is not easy to be reversed. The machine base structure is more concise, the integrated design of the machine base shell, and the installation slots corresponding to each component in the machine base shell make the installation of each component more clear and intuitive, without blind installation by feeling, and the assembly efficiency can be greatly improved. In addition, the utility model can also be conveniently used for distinguishing surge protectors in different application environments or equipment objects, and can protect the performance parameter mark of the surge protector from being stained or worn out after long-term use.

Description of drawings

Fig. 1 shows the structural representation of the surge protector of the present utility model;

Figure 2 shows a schematic diagram of the assembly structure of the plug-in module;

Fig. 3 and Fig. 4 are three-dimensional structural diagrams showing different angles of view of the shell of the plug-in module;

Figure 5 is a schematic diagram of the structure of the bottom cover of the present invention;

Figure 6 shows a schematic diagram of the assembly structure of the machine base;

Figure 7 is a schematic diagram of the structure of the grounding spring

Fig. 8 is a schematic structural diagram of the working principle of the bridging part;

Detailed ways

It will be further described below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1, the surge protector applying the utility model is composed of a plug-in module 1 and a frame 2, which is used to connect with the row of terminal structures to suppress surges and transient surges on the rows of terminal structures. voltage or overcurrent. The machine base 2 can be fixed on the ground rail 3 through form-locking and force-locking, and the plug-in module 1 can be inserted into the machine base 2 .

Referring to Figures 2 to 5, the plug-in module 1 includes a housing 11, a bottom cover 12 engaged with the housing 11, and two functional circuit boards 13 arranged in the housing 11 parallel to the front and rear sides of the housing 11 The lower end of the functional circuit board is provided with a claw piece 13b, and the bottom cover 12 is provided with a positioning piece for fixing the functional circuit board, and a positioning hole for the above-mentioned claw piece 13b to pass through;

The top surface of the housing 11 is an arc-shaped surface with unequal heights at the left and right ends, and the shape of the top of the two-function circuit board is an arc corresponding to the top surface of the housing 11; the arc-shaped upper surface 11d is similar in shape to the top of the printed circuit board. When the bottom cover 12 and the printed circuit board 13 are inserted into the housing 11, they are used to mark the direction, which conforms to the principles of ergonomics.

3 and 4, the lower ends of the left and right sides of the housing 11 are respectively provided with guide edges: the first guide edge 11f, the second guide edge 11i, the first guide edge 11f is located on the left side of the module housing 11, and its width is a1, the second guide edge 11i is located on the right side of the module housing 11, and its width is a2, and a1 and a2 are not equal, that is, the widths of the guide edges on both sides are different. Guide grooves adapted to the above-mentioned guide edges are provided on the housing of the machine base. The left and right sides of the bottom cover 12 are provided with guide strips corresponding to the guide edges. The width of the left guide strip 12d is c1, and the width of the right guide strip 12d is c2. C1 and c2 are not equal. When the bottom cover 12 is inserted into the housing 11, the Guidance and anti-mating reaction.

Referring to Fig. 6 and Fig. 7, the base 2 includes a base housing 21, an upper cover 22 and a connection module; the upper cover 22 is provided with a through hole for the connecting claws of the plug-in module to pass through;

The connection module includes: two sets of wire sockets for connecting the terminal structure in rows, which are symmetrically installed on the front and rear sides of the frame housing 21, and each group of wire sockets is symmetrically mounted on the same side of the frame shell 21. Composed of two sets of wiring inserts at the top;

The bridging part is composed of spring claws connecting the wiring inserts and bridging copper sheets respectively installed on the front and rear sides of the base housing 21. Each spring claw is respectively abutted against a bridging copper sheet, so that when the plug When the module is not inserted into the base 2, the current passes through the spring claws 24 and the bridging pieces 28 to form a loop; please refer to Figure 5, when the plug-in module 1 is inserted into the base 2, the connecting claws of the functional circuit board are inserted into each Between the spring claw 24 and the bridging copper sheet 28, the current is electrically connected to the connecting claw through the spring claw 24, and forms a loop through the functional circuit board;

The grounding spring member 26 used to connect the above-mentioned two-function circuit board connecting claws and the guide rail 3 is installed on the bottom of the base housing 21;

The base housing 21 is respectively provided with installation grooves for correspondingly installing the above-mentioned wiring inserts, spring claws, bridging copper pieces and grounding springs 26 .

Example

In the embodiment shown in Fig. 2 to Fig. 8, guide grooves are respectively provided on the left and right sides of the housing 11 of the plug-in module: the first guide groove 11g, the second guide groove 11h, the first guide groove 11g is located in the module On the left side of the housing 11, the distance from the inner wall on the left side is b1, and the second guide groove 11h is located on the right side inside the module housing 11, and the distance from the inner wall on the right side is b2, b1 and b2 are not equal, that is, two The distances from the groove walls of the side guide grooves to the inner side walls of the corresponding side housings are different. When the printed circuit boards 13 and 14 are inserted into the housing 11, they play the opposite role of guiding and anti-insertion.

2 and 3, the top of the housing 11 is also provided with a transparent cover 16, the transparent cover 16 is rotatably connected to one side of the upper end of the housing 11, so as to be able to cover the upper end of the housing 11 for marking the surge protector. Some related parameters protect these logos from being worn out during long-term use.

A marking strip 15 is embedded at the top of the housing. Surge protectors of different application environments or different equipment objects can be distinguished by setting a variety of colors of the identification strip 15 . The identification strip 15 is also covered under the transparent cover 16 and is not easily damaged.

As shown in FIG. 2 , the printed circuit board 13 is symmetrically arranged, and the connecting claw piece 13 b is located at the lower end of the printed circuit board 13 , and a copper foil is attached inside it for contacting and conducting electricity. The inner surface of the printed circuit board 13 is provided with an electroplating layer for guiding the pulse current required by the surge protector.

As shown in FIG. 5 , the positioning member on the bottom cover 12 is a positioning boss 12 a disposed on the front and rear sides of the bottom cover 12 and separates two adjacent claws 13 b of the functional circuit board. The claw piece 13b can only move up and down under the limitation of the positioning, and at the same time, the whole functional circuit board is fixed. The lower end of the bottom cover 12 is also provided with a rounded triangular prism error prevention boss 12c, and the machine base 2 is correspondingly provided with an error prevention slot with a rounded triangular prism hole.

The clamping form of the bottom cover and the housing is as follows: the bottom cover 12 is U-shaped, the arms on both sides of the U-shaped bottom cover 12 are respectively provided with hooks 12b, and the two sides of the housing are respectively provided with the above-mentioned hooks 12b. The hook hole 11c of the bottom cover 12 plays a fixing role when the bottom cover 12 is inserted into the housing 11 . In addition, the two sides of the housing 11 can also be respectively provided with pushing blocks, and the arms on both sides of the U-shaped bottom cover are respectively provided with through holes for the pushing blocks to pass through. The shell can be separated from the bottom cover by pressing the push-off block.

As shown in Figure 3, hooks 11a are provided on the left and right sides of the housing 11, and a slot is provided on both sides of the base cover 22. When the plug-in module 1 is inserted into the base 2, the hooks 11a snap into the machine. The catch groove on the seat loam cake 22. The pushing block 11b is located on the left and right sides of the module housing 11. There are several anti-slip bosses on the pushing block 11b.

Please refer to Fig. 6, the base includes a base housing 21, an upper cover 22 and a connecting module, the connecting module specifically includes a wiring insert 23, a short spring claw 24, a long spring claw 25, a grounding spring 26, and a slider 27, short bridging sheet 28, long bridging sheet 29. The wiring inserts 23 are electrically connected with the short spring claws 24 and the long spring claws 25 respectively, and a total of eight groups are fixed on the front and rear sides of the base housing 21; the grounding springs 26 are inserted into the base from the bottom of the base housing 21 The housing 21 is fixed by the middle buckle 26b; the slider 27 is fixed on the bottom of the base housing 21; the short bridging copper sheet 28 and the long bridging copper sheet 29 are inserted into the base housing 21 from above the base housing 21; The cover 22 covers the base case 21 from above.

The number of wiring inserts 23 in each group of wiring inserts is 2; in the bridging part, a set of bridging copper sheets are respectively installed on the front and rear sides of the base shell, and each set of bridging copper sheets includes a long bridging copper sheet and a short bridging copper sheet. The copper sheet and the bridging copper sheet are composed of 2 copper sheets and a connecting bridge connecting the two copper sheets. The long bridging copper sheet is located on the periphery of the short bridging copper sheet; The connecting bridge has a bent portion, so that when the bridging copper sheet is inserted into the base casing from above the base casing, the copper sheet can be inserted into the slot. The bridging copper sheet is inserted and installed from the top of the machine base shell, which is more convenient to operate.

The front and rear sides of the base housing 21 are provided with four sets of cavities and slots for accommodating and fixing the wiring insert 23 and the short spring claw 24; the short spring claw 24 passes through the hole above the wiring insert 23, The two are loaded together from the side of the base shell 21, the head of the screw on the wiring insert 23 is located on the U-shaped boss of the base shell 21, and the inclined end of the short spring claw 24 is snapped into the socket on the base shell 21. In the chute, the middle connecting bar is fixed in the slot; four groups of cavities and slots are arranged on the front and rear sides of the base housing 21, which are used to accommodate and fix the wiring insert 23 and the long spring claw 25; the long spring The claw piece 25 passes through the upper hole of the wiring insert 23, and the two are loaded together from the side of the base housing 21. The head of the screw on the wiring insert 23 is located on the U-shaped boss of the base housing, and the long spring claw One end of the part 25 is fixed in the chute, and the middle connecting bar is fixed in the slot; two sets of slots are arranged on the front and rear sides of the base housing 21 for fixing the long bridging piece 29, and the long bridging piece 29 is connected from the machine The top of the seat shell 21 is installed, and the square pieces at both ends are fixed in the slots; the front and rear sides of the base shell 21 are provided with two sets of slots for fixing the short bridging pieces 28, and the short bridging pieces 28 are connected from the base shell. The top of the body 21 is loaded, and the square pieces at both ends are fixed in the card slots; the bottom of the base housing 21 is provided with two long slots and two short slots for fixing the grounding spring 26, and the grounding spring 26 is connected from the base The bottom of the housing 21 is installed, and its spring claws pass through the two long slots, and the middle buckle 26b is fixed in the two short slots;

Please refer to FIG. 7 , the main features of the grounding spring member 26 are an upper spring claw 26a, a middle buckle 26b, and a lower spring claw 26c. The upper spring pawl 26a is located at the front and rear sides of the grounding spring part 26, and is used to contact the connecting claw piece in the middle of the printed circuit board; The seat housing 21 plays a fixed role; the lower spring claws 26c are located on the left and right sides of the grounding spring member 26 for contacting the guide rail 3 .

Please refer to FIG. 8 , 13 is a functional circuit board, and copper foil is provided on the left side of the connecting claw 13 b at the bottom. When the plug-in module 1 is not inserted into the base 2, the spring claw 24 contacts the bridging piece 28, the current passes through the spring claw and the bridging piece to complete the circuit, and the circuit is connected. When the plug-in module 1 is inserted into the base 2, the connecting claw piece 13b is inserted between the spring claw piece and the bridging piece, the spring claw piece is in contact with the copper foil on the connecting claw piece to conduct electricity, and the bridging piece is in contact with the back of the functional circuit board and is not conductive, and the current A circuit is formed by connecting the claw piece with the functional circuit board through the spring claw piece.

The utility model ensures that the assembly direction of the plug-in module is clear and will not be reversed by setting the arc-shaped top of the plug-in module and the functional circuit board; It is not easy to be reversed when plugged into the socket; it is also convenient to distinguish surge protectors used in different application environments or equipment objects, and can protect the performance parameter mark of the surge protector from being stained or worn out after long-term use. When assembling the machine base, each component in the connection module can be fixedly installed in the corresponding installation groove in the machine base shell, and then the upper cover is covered from the top of the machine base shell, and then it is connected with the guide rail. Connected and locked. The integrated design of the machine base shell and the installation slots corresponding to each component in the machine base shell make the installation of each component more clear and intuitive, without blind installation by feeling, and the assembly efficiency can be greatly improved.

Claims (8)

1. a Surge Protector, for being connected with panel wiring terminal structure to suppress the surge on connection terminal structure circuit in a row; Surge Protector comprises the support that can be fixed on grounding guide and the plug-in module that can insert in support; It is characterized in that:

Plug-in module comprises housing, with the bottom of housing clamping, and be parallel to two sides before and after housing, two the functional circuit plates be arranged in housing; Functional circuit plate lower end is provided with calvus, and bottom is provided with the keeper for fixed function circuit board, and for the location hole that above-mentioned calvus passes;

Above-mentioned housing tip face is the not contour arcwall faces in two ends, left and right; Two functional circuit plate upper end shapes are the arc corresponding with housing tip face;

The bottom of housing left and right sides is respectively equipped with guide edge, and the width of both sides guide edge is different;

Support comprises frame shell, upper cover and link block; On cover the through hole being provided with and passing for above-mentioned calvus, guide edge; Frame shell is provided with the gathering sill adapted with above-mentioned guide edge;

Described link block comprises:

For connecting two groups of junction blocks of connection terminal structure in a row, symmetry is installed on the both sides, front and back of frame shell, and each group junction block is installed on frame shell by symmetry respectively and forms with two groups of wiring inserts of sidepiece;

Bridge part, be made up of the spring fingers connecting each wiring inserts and the bridge joint copper sheet that is installed on both sides before and after frame shell respectively, each spring fingers abuts a bridge joint copper sheet respectively, makes when described plug-in module does not insert support, and electric current forms loop by spring fingers and bridging piece; When described plug-in module inserts support, the calvus of described functional circuit plate inserts between each spring fingers and bridge joint copper sheet, and electric current is electrically connected with calvus by spring fingers, forms loop by functional circuit plate;

For connecting the ground spring part of above-mentioned two functional circuit plate calvus and guide rail, be installed on the bottom of frame shell;

Frame shell is respectively equipped with the corresponding mounting groove installing above-mentioned wiring inserts, spring fingers, bridge joint copper sheet and ground spring part.

2. Surge Protector according to claim 1, is characterized in that: the housing tip of plug-in module is also provided with transparent cover, and transparent cover is rotationally connected with side, housing upper end.

3. Surge Protector according to claim 1, is characterized in that: the housing tip portion of plug-in module is also embedded with identification strip.

4. Surge Protector according to claim 1, is characterized in that: in the housing of plug-in module, left and right sides portion is also respectively equipped with gathering sill, and the cell wall of both sides gathering sill is different to the distance of corresponding side body madial wall.

5. the Surge Protector according to any one of Claims 1-4, is characterized in that: the keeper on the bottom of plug-in module is for being arranged at before and after bottom on two sides, and the positioning boss of the adjacent calvus of separation function circuit board two.

6. the Surge Protector according to any one of Claims 1-4, is characterized in that: the bottom of plug-in module is U-shaped, and the two side arms of U-shaped bottom (12) is respectively equipped with snap fit, and housing both sides are respectively equipped with the snap fit hole adapted with above-mentioned snap fit.

7. Surge Protector according to claim 1, is characterized in that: in support: in each group wiring inserts, wiring inserts quantity is 2; In bridge part, before and after housing, both sides install one group of bridge joint copper sheet respectively, often organize bridge joint copper sheet and comprise a long bridge joint copper sheet and a minibridge connects copper sheet, bridge joint copper sheet is made up of with the connecting bridge being connected two copper sheets 2 copper sheets, and long bridge joint copper sheet is positioned at the periphery that minibridge connects copper sheet; Housing is provided with the draw-in groove for fixing copper sheet, and described connecting bridge has bending part, and when making bridge joint copper sheet insert housing above housing, described copper sheet can insert described draw-in groove.

8. Surge Protector according to claim 1; it is characterized in that; ground spring part comprises 2 the upper spring pawls connecting calvus for contacting two functional circuit plates; for contacting 2 lower spring pawls of guide rail and middle buckle; two upper spring pawls are positioned at the both sides, front and back of ground spring part, and two lower spring pawls are positioned at the left and right sides portion of ground spring part.