Lightning protection device base for PCB and lightning protection device

Abstract

The utility model discloses a lightning protection device base used for a PCB, the lightning protection device base is matched with a lightning protection device plug, the lightning protection device base comprises a shell, a current strip, a switch trigger device and a connecting rod driving mechanism, the shell comprises a bottom shell and an upper shell installed together with the bottom shell, the upper shell comprises an installation part installed together with the bottom shell, and the current strip is arranged on the installation part. Two opposite side walls on the mounting part are respectively sunken inwards to form clamping grooves, and a first opening groove is formed in a position, between the two clamping grooves, on the mounting part. The current strip is installed in the clamping groove, the switch triggering device is installed in the first open groove, and the connecting rod driving mechanism is installed in the upper shell and can trigger the switch triggering device. The lightning protection device base for the PCB can meet the requirements of reinforced insulation / double insulation of main and auxiliary circuits; by means of the detachable connecting base structure, when a screw is not needed, the connecting base can adapt to a smaller installation space, and cost is saved.

Description

Technical Field:

[0001] The utility model relates to a lightning arrester base and a lightning arrester for a PCB board, belonging to the technical field of lightning protection. Background Art:

[0002] In order to achieve enhanced insulation / double insulation for the existing lightning arrester base on the PCB board, the switch triggering device is arranged on the other side of two current bars, and a certain distance needs to be ensured between the switch triggering device and each current bar, which will result in a relatively large size of the entire lightning arrester base. At the same time, the two sides of the existing lightning arrester base are provided with mounting holes, and the lightning arrester base is fixed to the PCB board by installing screws in the mounting holes. When screw installation is not required, since the mounting holes are formed on the outer shell of the lightning arrester base and cannot be disassembled, it will also cause the size of the entire lightning arrester base to increase and the cost to increase.

[0003] Therefore, it is necessary to improve the existing technology to solve the deficiencies of the existing technology. Summary of the Utility Model:

[0004] The utility model provides a lightning arrester base and a lightning arrester for a PCB board to solve the problems existing in the above-mentioned existing technology, which can solve the problem that the size of the lightning arrester base in the existing technology is relatively large and cannot adapt to different usage scenarios.

[0005] The utility model adopts the following technical scheme: A lightning arrester base for a PCB board, which is adapted to a lightning arrester plug, and the lightning arrester base includes:

[0006] A housing, the housing includes a bottom shell and an upper shell installed together with the bottom shell. The upper shell includes a mounting portion installed together with the bottom shell. On the opposite two side walls of the mounting portion, grooves are respectively formed by inward depression, and a first opening groove is formed at the position between the two grooves on the mounting portion;

[0007] Current bars, the current bars are installed in the grooves;

[0008] A switch triggering device, the switch triggering device is installed in the first opening groove;

[0009] A link driving mechanism, the link driving mechanism is installed in the upper shell and can trigger the switch triggering device.

[0010] Further, the switch triggering device is located at the middle position between the two current bars.

[0011] Further, the switch triggering device includes at least two pins, and the arrangement direction of the pins is perpendicular to the length direction of the lightning arrester base.

[0012] Further, the link driving mechanism includes a slide bar installed on the upper shell, a swing arm installed on the slide bar, and a spring sleeved on one end of the slide bar. One end of the swing arm is located above the switch triggering device and is used to trigger the switch triggering device.

[0013] Further, a rotating shaft is formed by protruding at a position on the mounting portion on one side of the first opening groove, and the swing arm is pivotally connected to the rotating shaft.

[0014] Further, a chute is formed on one side wall of the upper shell. The slide bar includes a rod body structure installed in the chute and a connecting structure perpendicular to the rod body structure and located below the chute. One end of the spring is sleeved on the slide bar and located below the connecting structure, and the other end of the spring abuts against the inner bottom surface of the bottom shell.

[0015] Further, a second opening groove is formed at the other end of the swing arm and is matched with the connecting structure.

[0016] Further, a notch portion communicating with the chute is formed by recessing at the upper end of the side wall of the chute on the housing, and a convex rod installed in the notch portion is formed by protruding on the side wall of the lightning arrester plug.

[0017] Further, the extending direction of the chute is consistent with the insertion direction when the lightning arrester plug is inserted into the lightning arrester base.

[0018] Further, a connecting seat is installed on the side wall in the length direction of the bottom shell, and a first through hole is formed on the connecting seat.

[0019] Further, a convex strip is formed by protruding on the side wall in the length direction of the bottom shell, and a groove is formed at a position on the connecting seat opposite to the convex strip. The convex strip is installed in the groove to install the connecting seat and the bottom shell together.

[0020] Further, the current bar includes a connecting portion installed in the card slot and a pin portion formed by bending downward and extending from one end of the connecting portion. An opening structure is formed at the middle position of the connecting portion, and a barb structure is formed on the outer edge of the connecting portion in contact with the card slot.

[0021] Further, a second through hole communicating with the opening structure is formed on the upper surface of the mounting portion. When the lightning arrester plug is installed in the upper shell, the pin on the lightning arrester plug is clamped in the opening structure.

[0022] Further, a card slot structure is formed by folding up the upper shell, and a hook structure matched with the card slot structure is formed at a position on the lightning arrester plug opposite to the card slot structure.

[0023] Further, several spaced ribs are formed by convexity at a position below the rotating shaft on the upper shell.

[0024] Further, reinforcing ribs are formed by convexity on the bottom wall of the bottom shell.

[0025] The present utility model also adopts the following technical solution: A lightning arrester, characterized in that it includes the aforementioned lightning arrester base.

[0026] The present utility model has the following beneficial effects:

[0027] (1) The lightning arrester base of the present utility model can meet the requirements of strengthening insulation / double insulation for the main and auxiliary circuits;

[0028] (2) Through the detachable connection seat structure of the present utility model, when screws are not needed, it can adapt to a smaller installation space and save costs;

[0029] (3) The lightning arrester base of the present utility model has the characteristics of high integration and miniaturization in the industrial field, saving the installation space of the PCB and saving costs. Description of the drawings:

[0030] Figure 1 is an exploded view of the lightning arrester base for the PCB of the present utility model.

[0031] Figure 2 is a partial view of the lightning arrester base for the PCB of the present utility model.

[0032] Figure 3 is a view of the upper shell.

[0033] Figure 4 is a view of the bottom shell.

[0034] Figure 5 is a front view when the spring is in a compressed state after the lightning arrester plug and the lightning arrester base are installed together.

[0035] Figure 6 is a front view when the spring is in a relaxed state after the lightning arrester plug and the lightning arrester base are installed together.

[0036] Figure 7 is a rear view when the lightning arrester plug and the lightning arrester base are installed together.

[0037] Figure 8 is a view of the connection seat. Detailed implementation manners:

[0038] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order different from those illustrated or described herein.

[0040] In the present utility model, the up and down directions are defined as the direction in which the lightning arrester plug is inserted into the lightning arrester base.

[0041] Refer to Figure 1-8 , the lightning arrester base for a PCB board of the present utility model includes a bottom shell 3 and an upper shell 2 installed together with the bottom shell 3. The upper shell 2 is integrally U-shaped, and includes a mounting portion 20 snap-fitted with the bottom shell 3 and extension portions 21 extending upward from both ends of the length direction of the mounting portion 20. The lightning arrester plug 1 cooperating with the lightning arrester base is installed in the space enclosed by the mounting portion 20 and the two extension portions 21.

[0042] On both side walls in the length direction of the mounting portion 20, clamping grooves 200 are respectively formed by inward depression. Current bars 6 are installed in the clamping grooves 200. The current bar 6 includes a connecting portion 60 installed in the clamping groove 200 and a pin portion 63 extending downward and bent from one end of the connecting portion 60. An opening structure 61 is formed at the middle position of the connecting portion 60. A barb structure 62 is formed on the outer edge of the connecting portion 60 in contact with the clamping groove 200. By providing the barb structure 62 on the current bar 6, it can effectively ensure that the current bar 6 does not fall out after being assembled with the upper shell 2. The pin structure 63 of the current bar 6 is used for welding on the PCB board.

[0043] A second through hole 201 communicating with the opening structure 61 up and down is formed on the upper surface of the mounting portion 20. When the lightning arrester plug 1 is installed in the space enclosed by the extension portions 21, the pins (not marked in the figure) on the lightning arrester plug 1 are exactly clamped in the opening structure 61.

[0044] A slide groove 210 extending in the up-down direction is formed on one of the extensions 21, and a notch 211 penetrating the slide groove 210 is formed at the upper end of the extension 21 formed with the slide groove 210. A slide rod 4 is installed in the slide groove 210, and the slide rod 4 includes a rod body structure 40 installed in the slide groove 4 and a connecting structure 41 perpendicular to the rod body structure 40 and located below the slide groove 210, and the lower end of the slide rod 4 located below the connecting structure 41 is designed as a columnar structure 42.

[0045] The middle position of the front side wall of the mounting portion 20 is recessed backward to form a first opening groove 202, in which a switch trigger device 7 is installed. The first opening groove 202 is connected to the bottom wall of the mounting portion 20 so that the pin 70 of the switch trigger device 7 can extend beyond the bottom wall of the mounting portion 20.

[0046] A rotating shaft 203 is formed on the mounting portion 20 at a protrusion between the slide groove 4 and the first opening groove 202, and a swing arm 5 is installed on the rotating shaft 203. The swing arm 5 includes an opening 51 installed together with the rotating shaft 203, and one end of the swing arm 5 is formed with a second opening groove 52 that matches the connecting structure 41, and the other end of the swing arm 5 is folded to form a driving portion 53 that extends into the first opening groove 202 and is located above the action arm 71 of the switch trigger device 7.

[0047] The slide bar 4 is installed in the slide slot 210 of the upper shell 2, the connection structure 41 on the slide bar 4 is matched with the second opening slot 52 of the swing arm 5, and the opening 51 on the swing arm 5 is matched with the rotating shaft 203 on the upper shell 2. The switch trigger device 7 is installed in the first opening slot 202 of the upper shell 2, and its action arm 71 is located below the driving part 53 of the swing arm 5.

[0048] A mounting groove 30 is formed on the bottom wall of the bottom shell 3 at a position opposite to the columnar structure 42 . One end of the spring 8 is inserted into the columnar structure 42 of the slide bar 4 , and the other end is mounted inside the mounting groove 30 of the bottom shell 3 .

[0049] A plurality of spaced first buckle portions 22 and first buckle slots 23 are formed at the position of the upper shell 2 opposite to the bottom shell 3, and a spaced second buckle portion 31 and a second buckle slot 32 are formed at the position of the bottom shell 3 opposite to the upper shell 2. The upper shell 2 and the bottom shell 3 are connected and fixed together by the cooperation of the first buckle portion 22 and the second buckle slot 32, and the cooperation of the first buckle slot 23 and the second buckle portion 31.

[0050] To prevent the lightning arrester plug 1 from falling off the lightning arrester base due to vibration during transportation, installation, operation, etc., the upper end of the extension part 21 is folded to form a slot structure 24, and a hook structure 12 is formed at the position on the lightning arrester plug corresponding to the slot structure 24. When the lightning arrester plug is inserted into the lightning arrester base, the hook structure 12 is snapped into the slot structure 24, which can prevent the lightning arrester plug from being disengaged from the lightning arrester base.

[0051] At the same time, a rib 33 extending in the up and down direction is formed by protruding on the side wall in the length direction of the bottom case 3, and a groove 90 matching with the rib 33 is formed at the position on the connecting seat 9 corresponding to the rib 3. The connecting seat 9 and the bottom case 3 are installed together by snapping the rib 33 into the groove 90. A first through hole 91 penetrating up and down is formed at the position on the connecting seat 9 on one side of the rib 33. The connecting seat 9 is fixed to the PCB board by screwing a bolt or a screw into the first through hole 91. The detachable design of the connecting seat 9 can adapt to different usage scenarios of the lightning arrester base. For example, when in a working environment such as vibration, the structure of the connecting seat 9 can be added to improve the overall stability. A convex rod 11 installed in the notch part 211 is formed by protruding on the side wall of the lightning arrester plug 1 on the same side as the sliding groove 210.

[0052] In the lightning arrester base of the present utility model, the upper case 2, the bottom case 3, the sliding rod 4, and the swing arm 5 are all made of industrial flame-retardant insulating materials. The industrial flame-retardant insulating materials can achieve diverse shapes and are impact-resistant. At the same time, it can ensure the safe insulation electrical performance between the lightning arrester base and the circuit board and adjacent electronic components during use, and has good processability and is safe and reliable.

[0053] In order to enhance the insulation function of the lightning arrester base of the present utility model, a plurality of spaced ribs 204 can be formed by protruding at the position on the upper case 2 below the rotating shaft 203, or a reinforcing rib 34 can be formed by protruding on the bottom wall of the bottom case 3.

[0054] The operation process of the lightning arrester base of the present utility model is as follows: After the lightning arrester plug is inserted into the lightning arrester base, the convex rod 11 on the lightning arrester plug presses the upper end of the sliding rod 4 to move downward, so that the spring 8 enters a compressed state, and the sliding rod 4 drives the swing arm 5 to rotate around the rotating shaft 203. When the lightning arrester plug 1 is pulled out or the lightning arrester plug 1 is in a tripped state, that is, the convex rod 11 retracts into the lightning arrester plug 1, the spring 8 is in a relaxed state, the sliding rod 4 moves upward under the action of the spring 8, and at the same time drives the swing arm 5 to rotate. At this time, the driving part 53 of the swing arm 5 moves downward to press the action arm 71 of the switch triggering device 7, and the state of the switch triggering device 7 is switched from normally open to normally closed or from normally closed to normally open, and an external signal is output.

[0055] The lightning arrester base of the utility model can ensure the distance between the switch triggering device and each current bar by arranging the switch triggering device between two current bars, thereby strengthening the insulation function of the lightning arrester base while further reducing the size of the lightning arrester base.

[0056] The above are only the preferred embodiments of the utility model. It should be pointed out that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the utility model, and these improvements should also be regarded as the protection scope of the utility model.

Claims

1. A lightning arrester base for a PCB board, which is adapted to a lightning arrester plug (1), and is characterized in that: The lightning arrester base includes: A housing, the housing includes a bottom case (3) and an upper case (2) installed together with the bottom case (3). The upper case (2) includes a mounting portion (20) installed together with the bottom case (3). On opposite side walls of the mounting portion (20), card slots (200) are respectively formed by inward depression. A first opening slot (202) is formed at a position between the two card slots (200) on the mounting portion (20); A current bar (6), the current bar (6) is installed in the card slot (200); A switch trigger device (7), the switch trigger device is installed in the first opening slot (202); A link driving mechanism, the link driving mechanism is installed in the upper case (2) and can trigger the switch trigger device (7).

2. The lightning arrester base for PCB board according to claim 1, characterized in that: The switch trigger device (7) is located at the middle position between the two current bars (6).

3. The lightning arrester base for PCB board according to claim 1, characterized in that: The switch trigger device (7) includes at least two pins, and the arrangement direction of the pins is perpendicular to the length direction of the lightning arrester base.

4. The lightning arrester base according to claim 1, wherein: The link driving mechanism includes a slide bar (4) installed on the upper case (2), a swing arm (5) installed on the slide bar (4), and a spring (8) sleeved on one end of the slide bar (4). One end of the swing arm (5) is located above the switch trigger device (7) and is used to trigger the switch trigger device (7).

5. The lightning arrester base according to claim 4, characterized in that: On the mounting portion (20), a rotating shaft (203) is formed by protrusion at a position on one side of the first opening slot (202), and the swing arm (5) is pivotally connected to the rotating shaft (203).

6. The lightning arrester base according to claim 5, wherein: On a side wall of the upper case, a chute (210) is formed. The slide bar (4) includes a rod structure (40) installed in the chute (210) and a connecting structure (41) perpendicular to the rod structure (40) and located below the chute (210). One end of the spring (8) is sleeved on the slide bar (4) and is located below the connecting structure (41), and the other end of the spring (8) abuts against the inner bottom surface of the bottom case (3).

7. The lightning arrester base according to claim 6, characterized in that: Another end of the swing arm (5) is formed with a second opening slot (52) that cooperates with the connecting structure (41).

8. The lightning arrester base according to claim 6, characterized in that: On the side wall of the housing at the upper end of the side wall of the chute (210), a notch portion (211) communicating with the chute (210) is formed by depression. On the side wall of the lightning arrester plug (1), a convex rod (11) installed in the notch portion (211) is formed by protrusion.

9. The lightning arrester base according to claim 6, characterized in that: The extending direction of the chute (210) is consistent with the insertion direction when the lightning arrester plug (1) is inserted into the lightning arrester base.

10. The lightning arrester base according to claim 1, characterized in that: On the side wall in the length direction of the bottom case (3), a connecting seat (9) is installed, and a first through hole (91) is formed on the connecting seat (9).

11. The lightning arrester base according to claim 10, characterized in that: On the side wall in the length direction of the bottom case (3), a convex strip (33) is formed by protrusion. At a position on the connecting seat (9) opposite to the convex strip (33), a groove (90) is formed, and the convex strip (33) is installed in the groove (90) to install the connecting seat (9) and the bottom case together.

12. The lightning arrester base according to claim 1, characterized in that: The current bar (6) includes a connecting portion (60) installed in the card slot (200) and a pin portion (63) formed by bending and extending downward from one end of the connecting portion (60). An opening structure (61) is formed at the middle position of the connecting portion (60), and a barb structure (62) is formed on the outer edge of the connecting portion (60) in contact with the card slot (200).

13. The lightning arrester base according to claim 12, characterized in that: A second through hole (201) that penetrates up and down with the opening structure (61) is formed on the upper surface of the mounting portion (20). When the lightning arrester plug (1) is installed in the upper shell (2), the pins on the lightning arrester plug (1) are clamped in the opening structure (61).

14. The lightning arrester base according to claim 1, characterized in that: A card slot structure (24) is formed by folding the upper shell (2) upward, and a hook structure (12) that cooperates with the card slot structure (24) is formed at a position on the lightning arrester plug (1) opposite to the card slot structure (24).

15. The lightning arrester base according to claim 5, characterized in that: A plurality of spaced ribs (204) are formed by protruding at a position on the upper shell (2) below the rotating shaft (203).

16. The lightning arrester base according to claim 14, characterized in that: A reinforcing rib (34) is formed by protruding on the bottom wall of the bottom shell (3).

17. A lightning arrester, characterized in that: It includes a lightning arrester base according to any one of claims 1-15.

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