Relay structure with diode protection

Abstract

The utility model discloses a relay structure with diode protection, which comprises a mounting plate, an iron core is fixedly mounted on the mounting plate, a coil is sleeved on the outer side of the iron core, a movable contact piece and a static contact piece are mounted on the upper surface of the mounting plate, and the movable contact piece is connected with the static contact piece. A coil negative contact piece and a coil positive contact piece are fixedly mounted at the positions, corresponding to the coil, of the bottom of the mounting plate, the coil negative contact piece and the coil positive contact piece are electrically connected with the two ends of the coil, and a diode body is placed between the two moving blocks, so that the two moving blocks are driven to extrude and fix the position of the diode body; the diode body is installed between the coil negative contact piece and the coil positive contact piece, installation and fixation of the diode body are achieved, the diode body is prevented from falling off during installation and use, the area near the diode body is protected by rotating the protective cover, and then the rotating rod is rotated to drive the clamping block to rotate. And the clamping block penetrates through the mounting plate and is rotationally stored in the clamping groove for fixing the position of the protective cover.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay structure with self-contained diode protection. Background Art

[0002] A relay is an electrical control device. It is an automatic device that causes a predetermined step change in the controlled quantity or changes the on / off state of the controlled circuit when the input quantity reaches a specified value. In actual use, in order to protect the relay, a diode must be installed between the negative contact and the positive contact of the relay coil. However, the installed diode is mostly located outside the relay, and the installation position of the diode cannot be fixed, with the risk of falling off the contact. At the same time, when a relay with a diode installed is in use, the diode is generally exposed to the outside. If it is touched by an electric wire, it will cause a short circuit in the relay. Utility Model Content

[0003] The purpose of the utility model is to provide a relay structure with built-in diode protection to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a relay structure with built-in diode protection, comprising a mounting plate, an iron core is fixedly mounted on the mounting plate, a coil is sleeved on the outer side of the iron core, a moving contact and a static contact are mounted on the upper surface of the mounting plate, a coil negative contact and a coil positive contact are fixedly mounted on the bottom of the mounting plate at a position corresponding to the coil, the coil negative contact and the coil positive contact are electrically connected to the two ends of the coil, the middle parts of the coil negative contact and the coil positive contact pass through the mounting plate and are arranged on the upper surface of the mounting plate, a diode body is mounted between the coil negative contact and the coil positive contact, a positioning plate for extruding and fixing the diode body is symmetrically and slidably mounted on the mounting plate, and a protective cover for shielding the diode body is rotatably mounted on the mounting plate.

[0005] As a further preferred embodiment of the present technical solution, a limit rod is symmetrically fixedly installed on the mounting plate at a position corresponding to the diode body, a moving block is slidably installed on the outer side of the limit rod, the bottom of one end of the positioning plate is fixedly connected to the moving block, a limit hole is opened in the middle of the moving block at the position corresponding to the limit rod, the limit hole is slidably connected to the limit rod, the two moving blocks are arranged in a ring array, a rack is fixedly installed on one side of the moving block, and a gear is rotatably installed on the mounting plate at a position corresponding to the position between the two racks, and the gear is meshingly connected to the two racks.

[0006] As a further preferred embodiment of the present technical solution, a return spring is sleeved on the outer side of one end of the limit rod close to the positioning plate, one end of the return spring is fixedly connected to the moving block, and the other end of the return spring is fixedly connected to the mounting plate.

[0007] As a further preferred embodiment of the present technical solution, a positioning groove is provided in the middle of the positioning plate.

[0008] As a further preferred embodiment of the present technical solution, an insulating rubber pad is fixedly installed at the position of the positioning plate corresponding to the positioning groove.

[0009] As a further preferred embodiment of the present technical solution, a rotating rod is rotatably mounted on the end of the protective cover, a clamping block is fixedly mounted on the bottom of the rotating rod, a clamping slot is provided on the mounting plate at a position corresponding to the clamping block, and the clamping block passes through the mounting plate and is rotatably mounted inside the clamping slot.

[0010] The utility model provides a relay structure with built-in diode protection, which has the following beneficial effects:

[0011] (1) The utility model places the diode body between the negative contact piece of the coil and the positive contact piece of the coil, pushes one of the moving blocks to move, and drives the positioning plate on the moving block to move. The diode body is placed between the two moving blocks by driving the two moving blocks to move in opposite directions. The push on the moving blocks is then canceled, and the two moving blocks are driven to squeeze and fix the position of the diode body. The diode body is installed between the negative contact piece of the coil and the positive contact piece of the coil, thereby achieving installation and fixation of the diode body and preventing the diode body from falling off during installation and use.

[0012] (2) The utility model protects the area near the diode body by rotating the protective cover, and then rotating the rotating rod to drive the clamping block to rotate. The clamping block will pass through the mounting plate and be rotated and stored inside the clamping slot to fix the position of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is one of the partial structural schematic diagrams of the utility model;

[0015] Figure 3 This is the second schematic diagram of the partial structure of the utility model;

[0016] Figure 4 Based Figure 3 The enlarged view of point A in the middle;

[0017] Figure 5 This is the third schematic diagram of the partial structure of the utility model;

[0018] In the figure: 1. mounting plate; 2. iron core; 3. coil; 4. moving contact; 5. stationary contact; 6. negative contact of coil; 7. positive contact of coil; 8. diode body; 9. positioning plate; 10. protective cover; 11. limiting rod; 12. moving block; 13. limiting hole; 14. rack; 15. gear; 16. reset spring; 17. positioning groove; 18. insulating rubber pad; 19. rotating rod; 20. clamping block; 21. clamping groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figures 1 to 5 As shown, in this embodiment, a relay structure with built-in diode protection includes a mounting plate 1, an iron core 2 is fixedly mounted on the mounting plate 1, a coil 3 is sleeved on the outer side of the iron core 2, a moving contact piece 4 and a static contact piece 5 are mounted on the upper surface of the mounting plate 1, a coil negative contact piece 6 and a coil positive contact piece 7 are fixedly mounted at the bottom of the mounting plate 1 corresponding to the position of the coil 3, the coil negative contact piece 6 and the coil positive contact piece 7 are electrically connected to the two ends of the coil 3, the middle parts of the coil negative contact piece 6 and the coil positive contact piece 7 pass through the mounting plate 1 and are arranged on the upper surface of the mounting plate 1, a diode body 8 is mounted between the coil negative contact piece 6 and the coil positive contact piece 7, a positioning plate 9 for extruding and fixing the diode body 8 is symmetrically and slidably mounted on the mounting plate 1, and a protective cover 10 for shielding the diode body 8 is rotatably mounted on the mounting plate 1.

[0021] like Figures 1 to 5 As shown, a limit rod 11 is symmetrically fixedly installed on the mounting plate 1 at a position corresponding to the diode body 8, a moving block 12 is slidably installed on the outer side of the limit rod 11, one end bottom of the positioning plate 9 is fixedly connected to the moving block 12, a limit hole 13 is provided in the middle of the moving block 12 at a position corresponding to the limit rod 11, the limit hole 13 is slidably connected to the limit rod 11, the two moving blocks 12 are arranged in a ring array, a rack 14 is fixedly installed on one side of the moving block 12, a gear 15 is rotatably installed at a position corresponding to the position between the two racks 14 on the mounting plate 1, and the gear 15 is meshed with the two racks 14.

[0022] Place the diode body 8 between the coil negative contact 6 and the coil positive contact 7, push one of the moving blocks 12 to move, which will drive the positioning plate 9 on the moving block 12 here to move, and place the diode body 8 between the two moving blocks 12 by driving the two moving blocks 12 to move in opposite directions. Then cancel the push on the moving block 12, drive the two moving blocks 12 to squeeze and fix the position of the diode body 8, and install the diode body 8 between the coil negative contact 6 and the coil positive contact 7, so as to realize the installation and fixation of the diode body 8 and prevent the diode body 8 from falling off during installation and use.

[0023] like Figures 1 to 5 As shown, a return spring 16 is sleeved on the outer side of one end of the limit rod 11 close to the positioning plate 9 , one end of the return spring 16 is fixedly connected to the moving block 12 , and the other end of the return spring 16 is fixedly connected to the mounting plate 1 .

[0024] When one of the moving blocks 12 is pushed to move, the reset spring 16 is in a compressed state. After the diode body 8 is placed between the two moving blocks 12, the push on the moving block 12 is canceled. The reset spring 16 can push the moving block 12 in the opposite direction to drive the two moving blocks 12 to stably fix the position of the diode body 8, which is easy to operate.

[0025] like Figures 1 to 5 As shown, a positioning groove 17 is provided in the middle of the positioning plate 9 .

[0026] The diode body 8 can be positioned inside the positioning groove 17 to prevent the diode body 8 from falling off.

[0027] like Figures 1 to 5 As shown, an insulating rubber pad 18 is fixedly installed at the position of the positioning plate 9 corresponding to the positioning groove 17 .

[0028] The electrical insulation of the contact between the positioning plate 9 and the diode body 8 and the flexible positioning of the diode body 8 are achieved.

[0029] like Figures 1 to 5 As shown, a rotating rod 19 is rotatably mounted on the end of the protective cover 10, a clamping block 20 is fixedly mounted on the bottom of the rotating rod 19, a clamping slot 21 is opened on the mounting plate 1 at a position corresponding to the clamping block 20, and the clamping block 20 passes through the mounting plate 1 and is rotatably mounted inside the clamping slot 21.

[0030] After installing the diode body 8, rotate the protective cover 10 to protect the area near the diode body 8, then rotate the rotating rod 19 to drive the block 20 to rotate. The block 20 will pass through the mounting plate 1 and rotate to be received in the slot 21 to fix the position of the protective cover 10.

[0031] The utility model provides a relay structure with built-in diode protection, and the specific working principle is as follows:

[0032] When the device is in use, the diode body 8 is placed between the coil negative contact piece 6 and the coil positive contact piece 7, and one of the moving blocks 12 is pushed to move, which will drive the positioning plate 9 on the moving block 12 here to move, and the gear 15 will be driven to rotate by the meshing of the rack 14 on one side of the moving block 12 and the gear 15. At this time, the two moving blocks 12 will be driven to move in the opposite direction by the meshing of the gear 15 and the rack 14 on the other side of the moving block 12. At this time, the reset spring 16 is in a compressed state, and the diode body 8 is placed between the two moving blocks 12, and then the push on the moving block 12 is canceled. Under the reverse push of the reset spring 16 on the moving block 12, the two moving blocks 12 will be driven to squeeze and fix the position of the diode body 8, and the diode body 8 is installed between the coil negative contact piece 6 and the coil positive contact piece 7, so as to realize the installation and fixation of the diode body 8;

[0033] After installing the diode body 8, rotate the protective cover 10 to protect the area near the diode body 8, then rotate the rotating rod 19 to drive the block 20 to rotate. The block 20 will pass through the mounting plate 1 and rotate to be received in the slot 21 to fix the position of the protective cover 10.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A relay structure with built-in diode protection, comprising a mounting plate (1), an iron core (2) fixedly mounted on the mounting plate (1), a coil (3) sleeved on the outer side of the iron core (2), a moving contact piece (4) and a stationary contact piece (5) mounted on the upper surface of the mounting plate (1), characterized in that: A coil negative contact piece (6) and a coil positive contact piece (7) are fixedly mounted at the bottom of the mounting plate (1) at a position corresponding to the coil (3); the coil negative contact piece (6) and the coil positive contact piece (7) are electrically connected to two ends of the coil (3); the middle parts of the coil negative contact piece (6) and the coil positive contact piece (7) pass through the mounting plate (1) and are arranged on the upper surface of the mounting plate (1); a diode body (8) is mounted between the coil negative contact piece (6) and the coil positive contact piece (7); a positioning plate (9) for pressing and fixing the diode body (8) is symmetrically and slidably mounted on the mounting plate (1); and a protective cover (10) for shielding the diode body (8) is rotatably mounted on the mounting plate (1).

2. A relay structure with built-in diode protection according to claim 1, characterized in that: A limit rod (11) is symmetrically fixedly installed on the mounting plate (1) at a position corresponding to the diode body (8); a moving block (12) is slidably installed on the outer side of the limit rod (11); the bottom of one end of the positioning plate (9) is fixedly connected to the moving block (12); a limit hole (13) is provided in the middle of the moving block (12) at a position corresponding to the limit rod (11); the limit hole (13) is slidably connected to the limit rod (11); the two moving blocks (12) are arranged in a ring array; a rack (14) is fixedly installed on one side of the moving block (12); a gear (15) is rotatably installed on the mounting plate (1) at a position corresponding to the position between the two racks (14); the gear (15) is meshingly connected to the two racks (14).

3. A relay structure with built-in diode protection according to claim 2, characterized in that: A return spring (16) is sleeved on the outer side of one end of the limit rod (11) close to the positioning plate (9); one end of the return spring (16) is fixedly connected to the moving block (12); and the other end of the return spring (16) is fixedly connected to the mounting plate (1).

4. A relay structure with built-in diode protection according to claim 3, characterized in that: A positioning groove (17) is provided in the middle of the positioning plate (9).

5. A relay structure with built-in diode protection according to claim 4, characterized in that: An insulating rubber pad (18) is fixedly mounted on the positioning plate (9) at a position corresponding to the positioning groove (17).

6. A relay structure with built-in diode protection according to claim 1, characterized in that: A rotating rod (19) is rotatably mounted on the end of the protective cover (10), a clamping block (20) is fixedly mounted on the bottom of the rotating rod (19), a clamping groove (21) is provided on the mounting plate (1) at a position corresponding to the clamping block (20), and the clamping block (20) passes through the mounting plate (1) and is rotatably mounted inside the clamping groove (21).

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