CN211605478U

CN211605478U - SPD electrode foot protecting against shock breaks away from, prevents plug structure from breaking away from

Info

Publication number: CN211605478U
Application number: CN202020082338.7U
Authority: CN
Inventors: 曾清隆; 陈泽同
Original assignee: Longke Electronics Huiyang Co ltd
Current assignee: Longke Electronics Huiyang Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-09-29
Anticipated expiration: 2030-01-14

Abstract

The utility model relates to a surge protector technical field specifically discloses a SPD electrode foot protecting against shock breaks away from, prevents from plug structure who breaks away from, connects the extension piece and SPD electrode foot including connecting extension piece and SPD electrode foot, and the connection extension piece is equipped with the through-hole, and the elasticity pin terminal of SPD electrode foot inserts in the through-hole, and the lateral wall of elasticity pin terminal is equipped with the arch. The utility model provides a pair of SPD electrode foot protecting against shock breaks away from, prevent the plug structure that breaks away from, all set up at least one arch through the two outsides of inelastic face at elasticity pin terminal, insert from the top at elasticity pin terminal, rely on elasticity to fix when connecting the through-hole of extension piece, the arch passes the through-hole and constitutes the relation of keeping out with the lower plane side of connecting the extension piece, thereby can be under the good electrical connection of extension piece and SPD electrode foot is being guaranteed to connect, avoid SPD electrode foot slippage when meeting with impulse current impact or thunderstorm surge and assault, the puzzlement that produces the self-slippage and break out under long-term use has been solved, SPD's security and reliability have been improved.

Description

SPD electrode foot protecting against shock breaks away from, prevents plug structure from breaking away from

Technical Field

The utility model relates to a surge protector technical field especially relates to a SPD electrode foot protecting against shock breaks away from, prevents from plug structure who breaks away from.

Background

The voltage-limiting Surge Protector (SPD) is mainly assembled by a Metal Oxide Varistors (MOV) chip, which has a special nonlinear current-voltage characteristic, i.e., a nonlinear relationship between current and voltage, and is generally characterized by a nonlinear coefficient (nonlinear parameter). When abnormal conditions occur, such as lightning stroke, electromagnetic field interference, frequent action of a power switch, power system failure and the like, the voltage on a circuit suddenly increases and exceeds the conducting voltage of the SPD, the SPD enters a conducting area, the nonlinear coefficient of the SPD can reach tens or hundreds under the condition, the impedance of the SPD becomes low and is only a few ohms, and therefore the overvoltage forms surge current to flow out, and the connected electronic products or expensive components are protected.

A conventional SPD electrode pin 10 is formed by bending an elastic copper sheet into a triangular cone shape as shown in fig. 1 and 2, and is inserted into a through hole 201 of the connection extension piece 20 for electrical connection (the through hole 201 is formed at the end of the

connection extension piece

20, and 50 is a fastening component for fixing the connection extension piece 20). The structure shown in fig. 1 and 2 integrates the two functions of electrical connection and insertion fastening, and when pulse current impact or thunderstorm surge impact occurs, the elastic straight pin 10 of the structure can slip towards the large cone direction by the electric field force generated by the impact electric field, or the elastic straight pin 10 can fall off by itself in the long-term use process, so that the electrical connection defect is caused, and the accident potential is formed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a SPD electrode foot protecting against shock breaks away from, prevents from plug structure that breaks away from, and the technical problem of solution is, current SPD electrode foot adopts elasticity to participate in the design of the through-hole that the disect insertion connection extension piece was seted up directly, when meetting impulse current impact or thunderstorm surge and assault, the electric field force that the impact electric field produced can make elasticity participate in the slippage directly, perhaps elasticity is participated in oneself and is come off, causes the electrical connection defect.

For solving above technical problem, the utility model provides a SPD electrode foot protecting against shock breaks away from, prevents from plug structure who breaks away from, including connecting extension piece and SPD electrode foot, it is equipped with the through-hole to connect the extension piece, the elasticity pin terminal of SPD electrode foot inserts in the through-hole, the lateral wall of elasticity pin terminal is equipped with the arch.

Specifically, the elastic pin terminal is inserted from above and fixed in the through hole by means of elasticity, and the protrusion penetrates through the through hole and abuts against the side edge of the lower plane of the connection extension piece.

Specifically, the elastic pin terminal is of a bent structure and comprises an inelastic surface and an elastic surface; the tail end of the elastic surface is buckled and bent, and comprises a first elastic surface and a second elastic surface; the protrusions are led out from two side walls of the non-elastic surface. The protrusion is arranged in the height range of 0.8-4 mm below the bending line of the first elastic surface and the second elastic surface.

In a first preferred embodiment, the projections are in the form of arc points, and at least one projection is provided on each of both side walls of the inelastic surface.

In a second preferred embodiment, the protrusion has a flat-top triangular shape, at least one protrusion is provided on each of both side walls of the inelastic surface, and the bottom edge of the protrusion coincides with the side wall of the inelastic surface.

In a third preferred embodiment, the protrusion has a shape of an inverted right triangle, at least one protrusion is provided on each of both side walls of the inelastic surface, and a right-angled edge of the protrusion overlaps with the side wall of the inelastic surface.

The plurality of protrusions form a saw-tooth shape along the insertion direction and are uniformly distributed on two side walls of the non-elastic surface.

Preferably, the resilient pin terminal includes at least two legs with a gap therebetween.

More specifically, the pogo pin terminal includes at least two legs. The bulges are arranged on the outer sides of the supporting legs, and the bulges on the two outer sides are symmetrical or asymmetrical, namely the heights of the bulges are the same or different.

The utility model provides a pair of SPD electrode foot protecting against shock breaks away from, prevent the plug structure that breaks away from, all set up at least one arch through the two outsides of inelastic face at elasticity pin terminal, insert from the top at elasticity pin terminal, rely on elasticity to fix when connecting the through-hole of extension piece, the arch passes the through-hole and constitutes the retaining relation with the lower plane side of connecting the extension piece, thereby can guarantee to connect the good electrical connection of extension piece and SPD electrode foot, avoid SPD electrode foot slippage when meeting with impulse current impact or thunderstorm surge and assault, the puzzlement that produces the self-slippage and break out under long-term use has been solved, SPD's security and reliability have been improved.

Drawings

Fig. 1 is a perspective view of a conventional SPD electrode pin plugging structure provided in the background art of the present invention;

fig. 2 is an exploded view of the structure of fig. 1 (omitting the fastening assembly 50) provided by the background of the present invention;

fig. 3 is a structural explosion diagram of a plug structure for preventing an SPD electrode pin from being detached from impact and self-detaching;

fig. 4-1 is a rear view of the SPD electrode pin 2 in fig. 3 provided in embodiment 1 of the present invention;

fig. 4-2 is a right side view of the SPD electrode pin 2 in fig. 3 provided in embodiment 1 of the present invention;

fig. 5 is a rear view of an SPD electrode pin 2 provided in embodiment 2 of the present invention;

fig. 6 is a rear view of an SPD electrode pin 2 provided in embodiment 3 of the present invention;

fig. 7 is a rear view of an SPD electrode pin 2 provided in embodiment 4 of the present invention;

fig. 8 is a rear view of the SPD electrode pin 2 provided in embodiment 5 of the present invention;

fig. 9 is a rear view of the SPD electrode pin 2 provided in embodiment 6 of the present invention;

fig. 10 is a rear view of an SPD electrode pin 2 provided in embodiment 7 of the present invention;

fig. 11 is a rear view of an SPD electrode pin 2 provided in embodiment 8 of the present invention;

fig. 12 is a rear view of an SPD electrode pin 2 provided in embodiment 9 of the present invention;

fig. 13 is a rear view of an SPD electrode pin 2 provided in embodiment 10 of the present invention;

wherein: the connecting extension piece 1 (through hole 11), the SPD electrode pin 2, the elastic pin terminal 21 (the non-elastic surface 21A, the elastic surface 21B, the bending line C, the support leg 210) and the protrusion 3.

Detailed Description

The following embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are given for illustrative purposes only and are not to be construed as limiting the invention, including the drawings, which are only used for reference and illustration, and do not constitute a limitation to the scope of the invention, since many changes may be made thereto without departing from the spirit and scope of the invention.

The embodiment of the utility model provides a pair of SPD electrode foot protecting against shock breaks away from, prevents from plug structure who breaks away from, its stereogram is shown in fig. 3, including connecting extension piece 1 and SPD electrode foot 2, it is equipped with through-hole 11 to connect extension piece 1, SPD electrode foot 2's elasticity pin terminal 21 inserts in the through-hole 11, elasticity pin terminal 21's lateral wall is equipped with arch 3.

Specifically, the elastic pin terminal 21 is inserted from above and fixed in the through hole 11 by means of elasticity, and the protrusion 3 passes through the through hole 11 and abuts against the lower plane side of the connection extension piece 1.

Specifically, the elastic pin terminal 21 is a bent structure, and includes an inelastic surface 21A and an elastic surface 21B; the projections 3 are led out from both side walls of the inelastic surface 21A. The tail end of the elastic surface 21B is buckled and bent, and comprises a first elastic surface and a second elastic surface. As shown in fig. 4-2, the protrusion 3 is disposed in a height range of 0.8-4 mm below the bending line C of the first elastic surface and the second elastic surface.

In specific implementation, the elastic pin terminal 21 may be formed by bending a sheet of alloy with excellent elasticity and good conductivity, or may be bent to have a structure with at least two legs 210, and a gap is left between the legs 210 and the legs 210. Preferably, the protrusions 3 are arranged on the outer side of the leg 210, and the protrusions 3 on both outer sides are symmetrical or asymmetrical, i.e. located at the same or different heights.

In this embodiment, the shape and size of the protrusion 3 are not specifically limited, and in consideration of the processing difficulty and the limiting effect, the elastic pin terminal 21 has two legs 210, and the protrusion 3 has an arc point shape, a flat-top triangle shape, an inverted right-angle triangle shape, a saw-tooth shape, and the like, wherein the main stream shapes are the arc point shape, the inverted right-angle triangle shape, and the saw-tooth shape, as shown in embodiments 1 to 10 below.

Example 1

In the present embodiment, the projection 3 is formed in an arc point shape, and one is provided on both side walls of the non-elastic surface 21A of the elastic pin terminal 21, as shown in the rear view of fig. 4-1 and the right view of fig. 4-2. The elastic pin terminal 21 includes two symmetrical legs 210, that is, the protrusions 3 on the outer sides of the two legs 210 are disposed at the same height and jointly resist the connection extension piece 1.

Example 2

In the present embodiment, as shown in fig. 5, the projections 3 are in the form of dots, and one projection is provided on each of both side walls of the inelastic surface 21A of the elastic lead terminal 21. Unlike embodiment 1, in this embodiment, the elastic pin terminal 21 includes two asymmetric legs 210, that is, the protrusions 3 outside the two legs 210 are disposed at different heights, the protrusion 30 at the higher position resists the connection extension piece 1 at the first time, and if the SPD is impacted by a strong current, the protrusion 30 at the lower position can resist the connection extension piece 1 at the second time (the elastic pin terminal 21 has been detached by a certain displacement).

Example 3

This embodiment is different from embodiment 1 in that, as shown in fig. 6, the shape of the protrusion 3 is a flat-top triangle, and the bottom side of the protrusion 3 coincides with the side wall of the inelastic surface 21A.

Example 4

This embodiment is different from embodiment 2 in that, as shown in fig. 7, the shape of the protrusion 3 is a flat-top triangle, and the bottom side of the protrusion 3 coincides with the side wall of the inelastic surface 21A.

Example 5

This embodiment is different from

embodiments

1 and 3 in that the shape of the projection 3 is an inverse right triangle, and a right-angled side of the projection 3 overlaps with a side wall of the inelastic surface 21A, as shown in fig. 8.

Example 6

This embodiment is different from embodiments 2 and 4 in that the shape of the projection 3 is an inverse right triangle, and a right-angled side of the projection 3 overlaps with a side wall of the inelastic surface 21A, as shown in fig. 9.

Example 7

The present embodiment is different from

embodiments

1 and 2 in that the number of the projections 3 is 2 as shown in fig. 10.

Example 8

The present embodiment is different from embodiments 3 and 4 in that the number of the projections 3 is 2 as shown in fig. 11.

Example 9

This embodiment differs from embodiments 5 and 6 in that the projections 3 are formed zigzag in the insertion direction as shown in fig. 12, but the height of the individual projections 3 is relatively small.

Example 10

The present embodiment is different from embodiment 8 in that the number of the projections 3 provided on both side walls of the inelastic surface 21A is different as shown in fig. 13, and a structure in which the projections are alternately blocked in the left and right direction is configured.

Examples 1-10 only show the bumps 3 as partial regular patterns, in other embodiments, the bumps 3 may be in any shape and arranged in any arrangement, but it is not preferred to be too wide, and preferably between 1/8-1/5 of the width of the leg 210, the top bumps 3 cannot be too low or too high relative to the inelastic surface 21A (keeping within a height range of 0.8-4 mm below the bending line C of fig. 4-2 to avoid the entire elastic lead terminal 21 from completely passing through the through hole 11), so as to maintain a larger contact area with the connection extension sheet 1 under the condition of ensuring that the elastic lead terminal 21 does not fall off, so as to ensure a good electrical connection effect. It should be noted that the present embodiment does not set any limitation on the specific structure of the connection extension piece 1, and the through hole 11 is configured to match with the elastic pin terminal 21.

The embodiment of the utility model provides a pair of prevent 2 plug structures of SPD electrode foot that break away from, all set up at least one arch 3 through two outsides of the non-elastic face 21A at elasticity pin terminal 21, insert elasticity pin terminal 21 from the top, rely on elasticity to fix when connecting the through-hole 11 of extension piece 1, arch 3 passes through-hole 11 and constitutes the retaining relation with the lower plane side of connecting extension piece 1, thereby can be under guaranteeing to connect extension piece 1 and the good electrical connection of SPD electrode foot 2, avoid SPD electrode foot 2 slippage when meeting with impulse current impact or thunderstorm surge impact, the puzzlement that produces the slippage oneself and collapse out under long-term use has been solved, SPD's security and reliability have been improved.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. The utility model provides a SPD electrode foot protecting against shock breaks away from, prevents plug structure from breaking away from which characterized in that, is including connecting extension piece and SPD electrode foot, it is equipped with the through-hole to connect the extension piece, SPD electrode foot's elasticity pin terminal inserts in the through-hole, the lateral wall of elasticity pin terminal is equipped with the arch.

2. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 1, characterized in that: the elastic pin terminal is inserted from the top and fixed in the through hole by means of elasticity, and the bulge penetrates through the through hole and abuts against the side edge of the lower plane of the connecting extension sheet.

3. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 2, characterized in that: the elastic pin terminal is of a bent structure and comprises an inelastic surface and an elastic surface; the tail end of the elastic surface is buckled and bent, and comprises a first elastic surface and a second elastic surface; the protrusions are led out from two side walls of the non-elastic surface.

4. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 3, characterized in that: the bulges are arc-point-shaped, and at least one bulge is arranged on each of the two side walls of the non-elastic surface.

5. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 3, characterized in that: the convex flat top is triangular, at least one convex flat top is arranged on each of two side walls of the non-elastic surface, and the bottom edge of the convex flat top is overlapped with the side wall of the non-elastic surface.

6. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 3, characterized in that: the protrusion is in a shape of a reversed right-angle triangle, at least one protrusion is arranged on each of two side walls of the non-elastic surface, and a right-angle edge of the protrusion is overlapped with the side wall of the non-elastic surface.

7. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 6, characterized in that: the plurality of protrusions form a saw-tooth shape along the insertion direction and are uniformly distributed on two side walls of the non-elastic surface.

8. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 3, characterized in that: the spring pin terminal includes at least two legs.

9. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 8, wherein: the bulges are arranged on the outer sides of the supporting legs, and the bulges on the two outer sides are symmetrical or asymmetrical, namely the heights of the bulges are the same or different.

10. The SPD electrode pin anti-impact separation, anti-self separation plug structure of claim 8, wherein: the protrusion is arranged in the height range of 0.8-4 mm below the bending line of the first elastic surface and the second elastic surface.