CN212627150U - Surge protector - Google Patents

Abstract

The utility model discloses a surge protector, it includes: the first PCB comprises a first shell, a second shell, a first limiting bulge and a second limiting bulge which are connected together, wherein the two first limiting bulges are respectively connected to two ends of the first PCB, limiting spaces are arranged at two ends of a containing cavity, and the first limiting bulge is contained in the limiting spaces and limited by limiting bodies on two sides of the limiting spaces. The utility model provides a surge protector on spacing groove and spacing basis, has increased the limit structure in first spacing arch and spacing space for first PCB board is after the installation, the first limit structure of constituteing by spacing groove and spacing simultaneously, and the second limit structure of first spacing arch and spacing space carries on spacingly, has improved the installation reliability of first PCB board, can effectively reduce the range of rocking of first PCB board, prevent even that first PCB board rocks.

Description

Surge protector

Technical Field

The utility model belongs to the technical field of lightning protection device technique and specifically relates to a surge protector.

Background

Surges are also called surge waves, and as the name suggests, are transient over-voltages that exceed normal operating voltages. Essentially, surge is a sharp pulse that occurs in only a few millionths of a second and can cause surges due to heavy equipment, short circuits, power switches or large engines; products containing surge arresters can effectively absorb bursts of large energy to protect connected equipment from damage.

A surge protector, also called a lightning protector, is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines; when the peak current or the voltage is suddenly generated in the electric loop or the communication line due to the external interference, the surge protector can conduct and shunt in a very short time, so that the damage of the surge to other equipment in the loop is avoided.

Surge protector among the prior art annotates heavily to connect stability and convenience:

such as: the utility model with the publication number of CN206697929U discloses a shockproof surge protector for preventing loose connection, as shown in FIG. 1, comprising a mounting base 3 and a failure indication window 6, a surge protector shell 10 is arranged on the left side of the front surface of the mounting base 3, a lead fixing plate 4 is arranged above the surge protector shell 10, a phase line terminal 5 is arranged on the left upper side of the surge protector shell 10 near the left lower side of the lead fixing plate 4, a lead fixing lock nut 2 is arranged on the left upper side of the phase line terminal 5 near the surge protector shell 10, a replaceable lightning protection module 7 is arranged on the lower side of the lead fixing lock nut 2 near the left middle position of the surge protector shell 10, the failure indication window 6 is arranged on the middle position of the front surface of the replaceable lightning protection module 7, a lightning protection module base 9 is arranged below the replaceable lightning protection module 7, the below that the below of the right side below of lightning protection module base 9 is close to lead wire fixed lock nut 2 is provided with ground wire wiring end 8, and the right side of lead wire fixed lock nut 2 is close to the upper right side of surge protector shell body 10 and is provided with central line wiring end 1, and the inside top of mount pad 3 is provided with the rubber shock pad near the rear of lead wire fixed lock nut 2, and inefficacy indication window 6, central line wiring end 1 and phase line wiring end 5 all with external power source electric connection.

For another example: the utility model with the publication number of CN207603206U discloses an easily assembled modular surge protector, as shown in fig. 2, comprising a first surge protector unit and N second surge protector units; the shells of two adjacent surge protector units are fixed by bolts or clamping; first surge protector unit 1 and second surge protector unit are the font of character cut in bas-relief setting, and the centre is equipped with cavity 11, and piezo-resistor module 12 is installed in cavity 11, specifically connects through the buckle, realizes piezo-resistor module 12's fixed, and surge protector switches on input 13 and earthing terminal 14 of every surge protector unit 1 through piezo-resistor module 12.

For another example: the utility model discloses a utility model patent that the publication number is CN207853457U discloses a SPD surge protector, as shown in fig. 3, including SPD surge protector body 1, the socket 2 that supplies the cable to insert and be connected with the inside components and parts of SPD surge protector body 1 is all seted up to SPD surge protector body 1 bisymmetry lateral wall, and socket 2 cross-section is circular setting. The SPD surge protector body 1 is provided with a fixing mechanism for fixing a cable on a corresponding socket 2, the fixing mechanism comprises a fixing ring 3 which is rotatably connected to the side wall of the socket 2, the fixing ring 3 is arranged in a circular ring shape, one end, facing the bottom surface of the socket 2, of the fixing ring 3 is fixedly connected with three abutting blocks 4, the three abutting blocks 4 are uniformly distributed around the fixing ring 3, and the end face, facing the center of the socket 2, of the fixing ring 3 is fixedly connected with a latch 5 for clamping the cable; one end fixedly connected with butt that solid fixed ring 3 deviates from the bottom surface is in the swivel becket 6 of SPD surge protector body 1 lateral wall, and swivel becket 6 lateral wall has been seted up three and has been made things convenient for and stir 6 pivoted breachs 7 of swivel becket, and breach 7 encircles 6 evenly distributed of swivel becket. And 2 lateral wall fixedly connected with of socket is three with the compact heap 8 that butt piece 4 is corresponding, compact heap 8 encircles 2 evenly distributed of socket, and every compact heap 8 all is located between two adjacent butt pieces 4, and one side lateral wall of compact heap 8 is provided with and makes things convenient for butt piece 4 to slide and butt in compact heap 8 towards the inclined plane 9 of 2 central one ends of socket, and when butt piece 4 deviates from 2 central one ends of socket and moves along inclined plane 9, butt piece 4 moves towards 2 centers of socket simultaneously. When the cable is inserted into the socket 2 and fixed, the rotating ring 6 is rotated to drive the abutting block 4 to rotate synchronously, the abutting block 4 abuts against the inclined surface 9 and slides to the end surface of the pressing block 8 facing to the center of the socket 2, so that the abutting block 4 moves towards the center of the socket 2, the abutting block 4 clamps the cable, and the cable is prevented from separating from the socket 2; at the same time, the cable is further clamped by the clamping teeth 5, and the cable is ensured to be fixed.

It can be seen that although the surge protector in the prior art is better in installation convenience and stability, the above documents lack the consideration of the fixing stability of the internal circuit board, and the circuit board is relatively fixed to the housing through the fixing column 10 (as shown in fig. 4) and the fitting manner of the fixing groove by mainly using the fixing manner in other fields, but this structure has a higher requirement on the processing precision, and under the condition that the circuit board and the housing are both externally wrapped, it is difficult to ensure the processing precision of the circuit board and the housing, so that the circuit board is easy to shake, and the fixing stability of the circuit board is lower.

It can be seen that the prior art is still in need of improvement and development.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, an object of the utility model is to provide a surge protector aims at solving among the prior art the consideration that surge protector lacks inside circuit board fixed stability, leads to the circuit board to rock easily, the lower problem of circuit board fixed stability.

The technical scheme of the utility model as follows:

a surge protector, comprising: a first shell and a second shell which are connected together, wherein an accommodating cavity is formed between the first shell and the second shell, at least one first PCB board is accommodated in the accommodating cavity, a limiting groove is formed on the first PCB board, the inner wall of the first shell and/or the second shell is/are provided with a limiting strip which is matched with the limiting groove, wherein, the PCB also comprises a first limit bulge and a second limit bulge, the first limit bulge and the second limit bulge are respectively connected with or integrally formed at the first end and the second end of the first PCB, a first limit space and a second limit space are respectively arranged at the two ends of the accommodating cavity, the first limit bulge and the second limit bulge are respectively accommodated in the first limit space and the second limit space, and are limited by the first limiting body and the second limiting body at two sides of the first limiting space and the second limiting space respectively.

Traditional surge protector only relies on spacing groove and spacing to carry out that first PCB board is spacing, but this kind of structure requires higherly to the machining precision, causes the cost higher, can install first PCB board into in order to guarantee smoothly, and the diameter of spacing groove will be greater than spacing diameter usually, but this kind of structure nevertheless lets first PCB board rock easily, and the installation reliability is lower.

The effect of above-mentioned scheme lies in: the utility model discloses on the basis of spacing groove and spacing, increased first spacing arch, second spacing arch, first spacing space and the spacing structure in second spacing space for first PCB board is after the installation, and the first spacing structure that comprises spacing groove and spacing simultaneously to and the second spacing structure in spacing arch and spacing space carry on spacingly, improved the installation reliability of first PCB board, can effectively reduce the range of rocking of first PCB board, prevent even that first PCB board rocks; the problem of among the prior art surge protector lack the fixed stability of inside circuit board is solved, lead to the circuit board to rock easily, circuit board fixed stability is lower is solved.

In a further preferred scheme, the first PCB is connected with a first connecting terminal, the first connecting terminal protrudes out of the first end of the first PCB, and the first limiting protrusion is specifically a portion of the first connecting terminal protruding out of the first end of the first PCB.

The effect of above-mentioned scheme lies in: binding post is traditional surge protector's existing device, the utility model discloses on the basis of traditional surge protector structure, adjusted first binding post for the position of first PCB board, make first binding post on the basis of original function, can realize first spacing bellied function simultaneously, for other structures, simple structure is reliable, only need adjust on the first PCB board be used for connecting binding post's connecting hole position can.

In a further preferred embodiment, the first position-limiting body and the second position-limiting body are both provided with at least two, the two first position-limiting bodies are respectively a first position-limiting body a and a first position-limiting body B, the two second position-limiting bodies are respectively a second position-limiting body a and a second position-limiting body B, the first position-limiting body a and the second position-limiting body B are arranged diagonally, the first position-limiting body a abuts against the first position-limiting protrusion, and the second position-limiting body B abuts against the second position-limiting protrusion.

The effect of above-mentioned scheme lies in: because first spacing body A and second spacing body B are the diagonal angle setting, consequently when the installation, only need first spacing body A and second spacing body B respectively with first spacing arch and the spacing protruding butt of second can guarantee the installation reliability of first PCB board, for example first spacing body A if carry out left spacing to first spacing arch (because first spacing arch is connected or integrated into one piece with first binding post, consequently carry out left spacing to first spacing arch and carry out left spacing to first PCB board promptly), then second spacing body B will carry out right spacing to the spacing arch of second, the two cooperation can realize first PCB board left right complete spacing.

In a further preferred embodiment, a distance between the first position-limiting body a and the first position-limiting body B is greater than a width of the first position-limiting protrusion, and a distance between the second position-limiting body a and the second position-limiting body B is greater than a width of the second position-limiting protrusion.

The effect of above-mentioned scheme lies in: because first spacing body A and second spacing body B have realized or have realized basically that the left and right sides of first PCB board is spacing, consequently need not to the interval between first spacing body A and the first spacing body B to and the interval between second spacing body A and the second spacing body B carries out strict requirement, the utility model discloses spacing between injecing first spacing body A and the first spacing body B is greater than first spacing bellied width, has reduced the installation degree of difficulty when first PCB board card is gone into first spacing space, has also reduced the machining precision requirement to first casing and/or second casing to the indirect machining cost who has reduced the casing.

In further preferred scheme, first spacing body all is a style of calligraphy, and all forms by the inboard extension of first casing, and the relative one side of two first spacing bodies all is provided with the inclined plane, the inclined plane is located the tip of first spacing body, and two inclined planes form the horn mouth of outer wide interior narrow.

The effect of above-mentioned scheme lies in: when the first linear limiting body is used for mold opening injection molding, the continuity is strong, the injection molding effect is good, the formed mold is simple, and the processing cost is low; second, the setting of horn mouth is convenient for the installation of first PCB board, because narrow characteristic in the outer width of horn mouth, first PCB board can get into first spacing space when the device, then under the effect on inclined plane, first PCB board is led just gradually, after first PCB board reachs the assigned position, is spacing by first spacing body and second spacing body.

In a further preferred embodiment, the second limiting protrusion and the second limiting body are configured as the first limiting protrusion and the first limiting body, respectively.

The effect of above-mentioned scheme lies in: the same structure must easily design, processing and assemble, consequently, the utility model discloses select spacing arch of second and the spacing body of second to adopt respectively with the configuration that first spacing arch and first spacing body are the same, reduced surge protector's the design, processing and the assembly degree of difficulty.

In a further preferred scheme, the first limiting space and the second limiting space are formed in the first housing, the surge protector further comprises a second PCB, two ends of the second PCB are respectively connected with a first network cable interface and a second network cable interface, clamping strips are arranged on two sides of the first network cable interface and the second network cable interface, the second housing is provided with a penetrating groove for accommodating the first network cable interface and the second network cable interface, and the penetrating groove is communicated with a clamping groove for adapting to the clamping strips; the first shell is provided with a crimping plate on one side facing the second shell, and the lower end face of the crimping plate is attached to the upper end faces of the first network cable interface and the second network cable interface.

The effect of above-mentioned scheme lies in: the setting of trough, net twine interface, card strip and draw-in groove of wearing can make the second casing carry on the second PCB board all around five directions down spacing, and the setting of crimping board then can go on spacing to the second PCB board, and two limit structure cooperations make the second PCB board spacing in surge protector's casing completely, have improved the fixed reliability of second PCB board, and the course of working is simple, and direct injection moulding first casing and second casing can.

In a further preferred scheme, a hanging protrusion is arranged on the lower end face of the second shell and used for hanging on a fixing rib in the lightning protection box; the second shell is connected with a movable clamping piece, the movable clamping piece has a loosening state and a clamping state, the distance between the movable clamping piece and the hanging protrusion is larger than the width of the fixing rib in the loosening state, and the distance between the movable clamping piece and the hanging protrusion is smaller than the width of the fixing rib in the clamping state.

The effect of above-mentioned scheme lies in: when installing surge protector to the lightning protection box, directly will be affiliated to the arch and be affiliated to fixed rib on, then promote to move the clamping piece can, because move the clamping piece under the pine takes off the state and be greater than with the distance between the arch is greater than the width of fixed rib, consequently, it can be smoothly affiliated to fixed rib to be affiliated to the arch, simultaneously because move the clamping piece under the clamping state and be less than with the distance between the arch fixed rib's width, consequently, it can be with surge protector stable mounting in the lightning protection box to be affiliated to the arch, and the cooperation casing is spacing to the fixed of PCB board for the position of PCB board relative to the lightning protection box is fixed unchangeable basically, can effectively guarantee surge protector's lightning protection performance.

In a further preferred aspect, the moving clamp includes: the clamping piece comprises a clamping piece body, wherein two sides of the clamping piece body are provided with shrinkage fins, one ends of the shrinkage fins are connected with the clamping piece body, and the other ends of the shrinkage fins are suspended in the air; the second shell is provided with a movable groove matched with the movable clamping piece, the wall of the movable groove is sequentially provided with a first inclined surface, a second inclined surface and a third inclined surface, the outer end surface of the contraction fin is attached to the first inclined surface in a loosening state, the outer end surface of the contraction fin is attached to the third inclined surface in a clamping state, and an included angle between the second inclined surface and the first inclined surface is an obtuse angle.

The effect of above-mentioned scheme lies in: the first inclined plane can ensure that the contraction fin in a loosening state is in an opening state (natural non-stressed state), and the contraction fin is prevented from being in a stressed contraction state for a long time to cause plastic deformation of the contraction fin; the third inclined plane can ensure that the contraction fin in the clamping state is in an opening state (natural non-stressed state), and the contraction fin is prevented from being in a stressed contraction state for a long time to cause plastic deformation of the contraction fin; the included angle between the second inclined plane and the first inclined plane is an obtuse angle, so that the shrinkage fin can be ensured to be gradually deformed when being pushed to the third inclined plane, and a guiding effect is realized; on the other hand, the shrink wing can be ensured not to be blocked by the second inclined surface when being pulled to the first inclined surface.

In a further preferable scheme, the second housing is symmetrically provided with two anti-falling projections, the clamping piece body is located between the anti-falling projections and the body of the second housing, and a guide groove is formed between the two anti-falling projections; the clamping piece body is provided with a guide strip in an extending mode, and the guide strip is matched with the guide groove.

The effect of above-mentioned scheme lies in: the anti-falling protrusions have two functions, one is to prevent the movable clamping piece from falling off, and the other is to guide the movement of the movable clamping piece by matching the two anti-falling protrusions, so that the deviation of the moving direction of the movable clamping piece is avoided.

In a further preferred embodiment, the outer wall and/or the inner wall of the first housing and/or the second housing is coated with a shielding lacquer.

The effect of above-mentioned scheme lies in: when meeting large-scale transformer or similar equipment the signal is easily disturbed, and the setting of shielding lacquer has guaranteed that the signal can not receive the decay.

Compared with the prior art, the utility model provides a surge protector, including first casing and the second casing that links together, be formed with the holding chamber between first casing and the second casing, at least one first PCB board has been acceptd to the holding intracavity, the spacing groove has been seted up on the first PCB board, be provided with spacing on the inner wall of first casing and/or second casing, spacing with spacing groove looks adaptation, wherein, still include: first spacing arch and the spacing arch of second, first spacing arch and the spacing arch of second connect respectively or integrated into one piece in the first end and the second end of first PCB board, the both ends in holding chamber are provided with first spacing space and the spacing space of second respectively, first spacing arch and the spacing arch of second accept respectively in first spacing space and the spacing space of second, and quilt respectively first spacing body and the spacing body of second of first spacing space and the spacing space both sides of second are spacing. The surge protector provided by the utility model increases the limit structure of the first limit bulge and the limit space on the basis of the limit groove and the limit strip, so that after the first PCB is installed, the first limit structure consisting of the limit groove and the limit strip and the second limit structure of the first limit bulge and the limit space limit the first PCB, thereby improving the installation reliability of the first PCB, effectively reducing the shaking amplitude of the first PCB and even preventing the first PCB from shaking; the problem of among the prior art surge protector lack the fixed stability of inside circuit board is solved, lead to the circuit board to rock easily, circuit board fixed stability is lower is solved.

Drawings

Fig. 1 is a schematic structural view of a surge protector for preventing a connection line from being loosened and preventing vibration, disclosed in utility model patent No. CN 206697929U.

Fig. 2 is a schematic structural view of an easily assembled modular surge protector disclosed in utility model patent publication No. CN 207603206U.

Fig. 3 is a schematic structural diagram of an SPD surge protector disclosed in the utility model patent with the publication number CN 207853457U.

Fig. 4 is a schematic structural diagram of a housing clamped with a PCB board in a surge protector in the prior art.

Fig. 5 is an exploded view of the combination of the first housing and the first PCB board in the surge protector of the present invention.

Fig. 6 is a front view of the first housing of the surge protector of the present invention.

Fig. 7 is a schematic view of an alternative structure of the limiting protrusion used in the surge protector of the present invention.

Fig. 8 is a schematic view of another alternative structure of the limiting protrusion used in the surge protector of the present invention.

Fig. 9 is a sectional view of a first housing for a surge protector according to the present invention.

Fig. 10 is a schematic structural diagram of the first housing and the second housing matching structure in the surge protector of the present invention.

Fig. 11 is a schematic structural diagram of a first viewing angle of the second housing of the surge protector of the present invention.

Fig. 12 is a schematic structural view of the movable clamping member used in the surge protector of the present invention in a released state with the second housing.

Fig. 13 is a schematic structural view of the movable clamping member of the surge protector in a clamped state with the second housing.

Fig. 14 is a cross-sectional view of a second view of the second housing of the surge protector of the present invention.

Fig. 15 is an enlarged view of a portion a in fig. 14.

Fig. 16 is a schematic structural diagram of a third view angle of the second housing of the surge protector of the present invention.

Fig. 17 is a schematic structural view of a first position-limiting body according to another preferred embodiment of the present invention.

Detailed Description

The utility model provides a surge protector, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and lifts the example the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention provides a surge protector, in a preferred embodiment, as shown in fig. 5, which includes: the first PCB comprises a first shell 110, a first PCB 210, a first connecting terminal 310 and a second connecting terminal 320, wherein a first limiting body 111 and a second limiting body 112 extend from the inner wall of the first end and the second end of the first shell 110 respectively, a first limiting space 114 (shown in figure 6, a broken line is constructed and does not really exist) is reserved between the two first limiting bodies 111, a second limiting space 115 (shown in figure 6, a broken line is constructed and does not really exist) is reserved between the two second limiting bodies 112, the first connecting terminal 310 and the second connecting terminal 320 respectively protrude from the first end and the second end of the first PCB 210 so as to respectively form a first limiting bulge (not shown, the part of the first connecting terminal 310 protruding from the first end of the first PCB 210 is a first limiting bulge) and a second limiting bulge (not shown, the part of the second connecting terminal 320 protruding from the second end of the first PCB 210 is a second limiting bulge), the first limiting bulge is accommodated in the first limiting space 114 and is limited by at least one of the two first limiting bodies 111; the second position-limiting protrusion is received in the second position-limiting space 115 and is limited by at least one of the two second position-limiting bodies 112.

The inner cavity of the first casing 110 is provided with a plurality of limiting strips 113 (as shown in fig. 5), the first PCB 210 is provided with a plurality of limiting grooves 213 (as shown in fig. 5), the shape, position, number, parameters and the like of the limiting strips are matched with the limiting grooves 213, and the number of the limiting strips 113 and the limiting grooves 213 in the structure shown in fig. 5 is four, but it can be understood that the number of the limiting strips and the limiting grooves can also be two, three or more.

The stopper 113 shown in fig. 5 is a circular cylinder shape, and has a function of connecting the first housing 210 to the second housing by passing a screw, in addition to positioning and certain stopper function of the first PCB 210. It can be understood that the state of the limiting strip can be set to be triangular column shape, rectangular column shape, etc.; the present invention is not limited to this embodiment.

It should be noted that the scheme that the connection terminal protrudes from the first PCB 210 to form the first spacing protrusion is not the only scheme, the present invention can at least adopt the following schemes to replace (here, the present invention only shows the structure of the first spacing protrusion and the first spacing space to illustrate, but does not show the whole first housing and the first PCB):

1. as shown in fig. 7, a first limiting protrusion 218 (a dotted line is formed and does not exist actually) and a second limiting protrusion 219 '(a dotted line is formed and does not exist actually) extend outwards from both ends of the first PCB 210', that is, the first limiting protrusion and the second limiting protrusion are directly formed integrally with the first PCB;

2. as shown in fig. 8, two ends of the first PCB 210 "are respectively connected with a first limiting plate 231" and a second limiting plate 241 ", the first limiting plate 231" and the second limiting plate 241 "respectively protrude from the first end and the second end of the first PCB 210", and a portion of the first limiting plate 231 "protruding from the first end of the first PCB 210" is a first limiting protrusion 231 "(the dotted line in fig. 8 is constructed, and does not really exist), and similarly, a portion of the second limiting plate 241" protruding from the second end of the first PCB 210 "is a second limiting protrusion 241" (the dotted line in fig. 8 is constructed, and does not really exist).

In addition, can also set up the spacing groove on first PCB board to set up on the inner wall of first casing with the spacing arch of spacing groove looks adaptation, it is not difficult to think the utility model discloses on the basis of the embodiment disclosed, the selection of adaptability adjustment and prior art similar structure still can be carried out to this to the technical staff in the field on the basis of not paying out creative work, in order to realize with the utility model discloses the same technological effect, the utility model discloses unable list can realize the structure, and this no longer gives unnecessary details.

As can be seen from fig. 9, both of the first position-limiting bodies 111 are in a straight shape, and preferably, the upper ends of the opposite surfaces of the two first position-limiting bodies 111 are provided with upper inclined surfaces 111a, and the two upper inclined surfaces 111a form a bell mouth with a wide upper part and a narrow lower part, so as to facilitate the installation and downward movement of the first position-limiting protrusion. Furthermore, a lower inclined surface 111b is arranged below the upper inclined surface 111a, the two lower inclined surfaces 111b are also in a bell mouth shape with a wide upper part and a narrow lower part, and when the first limiting protrusion is installed, the first limiting protrusion firstly enters the first limiting space through the bell mouth with the wide upper part, and then moves downwards along the upper inclined surface 111a to be smoothly attached to and limited between the two first limiting bodies 111.

As an improvement of the above preferred embodiment, the first position-limiting body and the second position-limiting body are both provided with at least two, the two first position-limiting bodies are respectively a first position-limiting body a and a first position-limiting body B, the two second position-limiting bodies are respectively a second position-limiting body a and a second position-limiting body B, the first position-limiting body a and the second position-limiting body B are arranged diagonally, the first position-limiting body a abuts against the first position-limiting protrusion, and the second position-limiting body B abuts against the second position-limiting protrusion. Because first spacing body A and second spacing body B are the diagonal angle setting, consequently when the installation, only need first spacing body A and second spacing body B respectively with first spacing arch and the spacing protruding butt of second can guarantee the installation reliability of first PCB board, for example first spacing body A if carry out left spacing to first spacing arch (because first spacing arch is connected or integrated into one piece with first binding post, consequently carry out left spacing to first spacing arch and carry out left spacing to first PCB board promptly), then second spacing body B will carry out right spacing to the spacing arch of second, the two cooperation can realize first PCB board left right complete spacing.

Further, the distance between the first limiting body A and the first limiting body B is greater than the width of the first limiting protrusion, and the distance between the second limiting body A and the second limiting body B is greater than the width of the second limiting protrusion. Because first spacing body A and second spacing body B have realized or have realized basically that the left and right sides of first PCB board is spacing, consequently need not to the interval between first spacing body A and the first spacing body B to and the interval between second spacing body A and the second spacing body B carries out strict requirement, the utility model discloses spacing between injecing first spacing body A and the first spacing body B is greater than first spacing bellied width, has reduced the installation degree of difficulty when first PCB board card is gone into first spacing space, has also reduced the machining precision requirement to first casing and/or second casing to the indirect machining cost who has reduced the casing.

According to another aspect of the present invention, the surge protector further includes a second housing 120, as shown in fig. 10, the first limiting space 114 and the second limiting space 115 are formed in the first housing 110, the surge protector further includes a second PCB (not shown), two ends of the second PCB are respectively connected to a first network cable interface and a second network cable interface, two sides of the first network cable interface and the second network cable interface are both provided with a clamping strip, the second housing is provided with a penetrating groove for accommodating the first network cable interface and the second network cable interface, and the penetrating groove is communicated with a clamping groove for adapting the clamping strip; the first shell is provided with a crimping plate 116 facing one side of the second shell, and the lower end face of the crimping plate 116 is attached to the upper end faces of the first network cable interface and the second network cable interface.

The setting of trough, net twine interface, card strip and draw-in groove of wearing can make the second casing carry on the second PCB board all around five directions down spacing, and the setting of crimping board then can go on spacing to the second PCB board, and two limit structure cooperations make the second PCB board spacing in surge protector's casing completely, have improved the fixed reliability of second PCB board, and the course of working is simple, and direct injection moulding first casing and second casing can.

According to another aspect of the present invention, as shown in fig. 11, the lower end surface of the second casing 120 is provided with a hanging protrusion 123, the hanging protrusion 123 is used for hanging on a fixing rib (not shown) in the lightning protection box, and a hanging gap 124 is reserved between the hanging protrusion 123 and the body of the second casing 120; the second housing 120 is connected to a movable clamping member 400, the movable clamping member 400 has a release state and a clamping state (shown in fig. 12 and 13, respectively), in the release state (shown in fig. 12), a distance between the movable clamping member 400 and the engaging protrusion 123 is greater than a width of the fixing rib, and in the clamping state (shown in fig. 13), a distance between the movable clamping member 400 and the engaging protrusion 123 is less than the width of the fixing rib.

As shown in fig. 14 and 15, the movable clamp 400 includes: the clamp comprises a clamp body 410, wherein two sides of the clamp body 410 are provided with shrinkage fins 420, one end of each shrinkage fin 420 is connected with the clamp body 410, and the other end of each shrinkage fin is suspended.

The second housing 120 is provided with a movable groove (not shown) adapted to the movable clamping member, a wall of the movable groove is sequentially provided with a first inclined surface 127, a second inclined surface 128 and a third inclined surface 129, in a loose state, an outer end surface of the contraction fin 420 is attached to the first inclined surface 127, in a clamping state, an outer end surface of the contraction fin 420 is attached to the third inclined surface 129, and an included angle between the second inclined surface 128 and the first inclined surface 127 is an obtuse angle.

Further, the second housing 120 is symmetrically provided with two anti-falling protrusions 125, as shown in fig. 16, the clamping member body 410 is located between the anti-falling protrusions 125 and the body of the second housing 120, and a guide groove (filled with a guide bar, not shown) is formed between the two anti-falling protrusions 125; the clamping piece body 410 is provided with a guide strip 430 in an extending manner, and the guide strip 430 is matched with the guide groove.

In another preferred embodiment of the present invention, the first position-limiting body 111' is cylindrical, as shown in fig. 17, and extends downward from the inner top wall of the first housing 110 (for the purpose of illustrating the structure, the direction shown in fig. 17 is upward). From this can understand, all can carry out the spacing component in a left side and/or the right side all can regard as to first PCB board the utility model discloses a first spacing body, for example split into the multistage with the first spacing body of a style of calligraphy, perhaps set up a plurality of columniform first spacing bodies, perhaps set up first spacing body into other shapes, for example oval, rectangle, triangle-shaped etc. all can, the utility model discloses can't enumerate one by one to this.

It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims (10)

1. A surge protector, comprising: a first shell and a second shell which are connected together, wherein an accommodating cavity is formed between the first shell and the second shell, at least one first PCB board is accommodated in the accommodating cavity, a limiting groove is formed on the first PCB board, the inner wall of the first shell and/or the second shell is/are provided with a limiting strip which is matched with the limiting groove, it is characterized by also comprising a first limiting bulge and a second limiting bulge, wherein the first limiting bulge and the second limiting bulge are respectively connected with or integrally formed at the first end and the second end of the first PCB, a first limit space and a second limit space are respectively arranged at the two ends of the accommodating cavity, the first limit bulge and the second limit bulge are respectively accommodated in the first limit space and the second limit space, and are limited by the first limiting body and the second limiting body at two sides of the first limiting space and the second limiting space respectively.

2. The surge protector of claim 1, wherein the first PCB is connected to a first terminal protruding from a first end of the first PCB, and the first limiting protrusion is specifically a portion of the first terminal protruding from the first end of the first PCB.

3. The surge protector of claim 1, wherein at least two of the first and second position-limiting bodies are provided, the two first position-limiting bodies are a first position-limiting body A and a first position-limiting body B, the two second position-limiting bodies are a second position-limiting body A and a second position-limiting body B, the first position-limiting body A and the second position-limiting body B are arranged diagonally, the first position-limiting body A abuts against the first position-limiting protrusion, and the second position-limiting body B abuts against the second position-limiting protrusion.

4. The surge protector of claim 3, wherein the spacing between the first position limiting body A and the first position limiting body B is greater than the width of the first position limiting protrusion, and the spacing between the second position limiting body A and the second position limiting body B is greater than the width of the second position limiting protrusion.

5. The surge protector of claim 1, wherein the first position-limiting bodies are all in a straight line shape and are formed by extending the first housing inward, and the two opposite surfaces of the first position-limiting bodies are both provided with inclined surfaces, the inclined surfaces are located at the ends of the first position-limiting bodies, and the two inclined surfaces form a bell mouth with an outer width and an inner width.

6. The surge protector of any of claims 1 to 5, wherein the second limiting protrusion and the second limiting body are configured the same as the first limiting protrusion and the first limiting body, respectively.

7. The surge protector of claim 1, wherein the first and second limiting spaces are formed in the first housing, the surge protector further comprises a second PCB, both ends of the second PCB are connected to a first and second network cable interfaces, both sides of the first and second network cable interfaces are provided with clamping strips, the second housing is provided with penetrating grooves for accommodating the first and second network cable interfaces, and the penetrating grooves are communicated with clamping grooves for adapting the clamping strips; the first shell is provided with a crimping plate on one side facing the second shell, and the lower end face of the crimping plate is attached to the upper end faces of the first network cable interface and the second network cable interface.

8. The surge protector of claim 1, wherein the lower end face of the second shell is provided with a hanging protrusion, and the hanging protrusion is used for hanging on a fixing rib in the lightning protection box; the second shell is connected with a movable clamping piece, the movable clamping piece has a loosening state and a clamping state, the distance between the movable clamping piece and the hanging protrusion is larger than the width of the fixing rib in the loosening state, and the distance between the movable clamping piece and the hanging protrusion is smaller than the width of the fixing rib in the clamping state.

9. The surge protector of claim 8, wherein the moving clamp comprises: the clamping piece comprises a clamping piece body, wherein two sides of the clamping piece body are provided with shrinkage fins, one ends of the shrinkage fins are connected with the clamping piece body, and the other ends of the shrinkage fins are suspended in the air; the second shell is provided with a movable groove matched with the movable clamping piece, the wall of the movable groove is sequentially provided with a first inclined surface, a second inclined surface and a third inclined surface, the outer end surface of the contraction fin is attached to the first inclined surface in a loosening state, the outer end surface of the contraction fin is attached to the third inclined surface in a clamping state, and an included angle between the second inclined surface and the first inclined surface is an obtuse angle.

10. The surge protector of claim 9, wherein the second housing is symmetrically provided with two anti-drop protrusions, the clamp body is located between the anti-drop protrusions and the body of the second housing, and a guide groove is formed between the two anti-drop protrusions; the clamping piece body is provided with a guide strip in an extending mode, and the guide strip is matched with the guide groove.

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