Solid-state relay structure

Abstract

The utility model belongs to the technical field of solid-state relays, in particular to a solid-state relay structure, which comprises a shell of a solid-state relay, an input circuit, an isolation (coupling) circuit and an output circuit are arranged in the shell, four corners of the shell are respectively and fixedly connected with a contact piece, the upper part of the contact piece is fixedly connected with a threaded connection column, and the threaded connection column is fixedly connected with the shell. The surface of the threaded connecting column is sleeved with a pressing piece. According to the utility model, the wire is placed between the pressing sheet and the contact sheet, the threaded connection column is wound to enhance the friction force, then the threaded cap and the threaded connection column are screwed in a rotating manner to press and fix the wire, and the clamping block is inserted into the corresponding clamping groove to prevent the wire from loosening caused by the reverse rotation of the threaded cap. Installation can be achieved with one hand, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of solid state relays, in particular to a solid state relay structure. Background Art

[0002] A solid state relay is a contactless switch composed of microelectronic circuits, discrete electronic devices, and power electronic power devices. An isolation device is used to isolate the control end from the load end. A tiny control signal is used at the input end of the solid state relay to directly drive a large current load, with high safety and good effect.

[0003] When the existing solid state relay is in use, the end of the wire on the wire is placed between the contact piece and the pressure plate, and then the screw is tightened to press the pressure plate against the wire, so that the wire is installed on the solid state relay. However, during use, when the screw rotates, the screw will become loose, causing the pressure plate to become loose. At this time, the pressed wire will become loose, resulting in an impact on the connection between the wire and the solid state relay, poor contact, and affecting the use stability of the solid state relay.

[0004] A Chinese patent with the publication number CN220753311U discloses a solid state relay, including a device body, four groups of screws and four groups of wires. The wire includes an outer skin and a conductor. Four groups of contact pieces are arranged on the device body. The working end of the screw passes through the pressure plate and the contact piece and extends into the interior of the device body. Four groups of limiting mechanisms are arranged on the device body. The limiting mechanism includes a limiting component and a moving component. The limiting component includes an outer ring and an insertion plate. The outer ring is fixed outside the screw, and multiple groups of slots are opened inside the outer ring. One end of the insertion plate penetrates into the interior of the slot.

[0005] In view of the above and related prior arts, the inventor believes that the following defects often exist: when holding the movable plate and installing the screw, the construction personnel need to operate with both hands, so that the construction personnel cannot hold and fix the solid state relay for installation, increasing the inconvenience of operation and needing to be improved. Therefore, a solid state relay structure is proposed for the above problems. Summary of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a solid state relay structure.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a solid-state relay structure described in the utility model comprises a housing of a solid-state relay, an input circuit, an isolation (coupling) and an output circuit are installed in the housing, contact pieces are fixedly connected at the four corners of the housing respectively, a threaded connection column is fixedly connected above the contact piece, a pressing sheet is sleeved on the surface of the threaded connection column, a fixing component is installed above the pressing sheet, the fixing component comprises a threaded cap and a card slot distributed in an annular shape, the threaded cap is threadedly connected to the threaded connection column, a fixing ring and a movable ring are respectively installed on the lower side wall of the threaded cap from top to bottom, the fixing ring is fixedly connected to the threaded cap, spring telescopic rods are fixedly connected on both sides of the fixing ring respectively, and the bottom end of the spring telescopic rod is fixedly connected to the movable ring, a card block is fixedly connected to the bottom of the movable ring, and the card slot is opened on the surface of the pressing sheet. During installation, the wire is placed between the pressing sheet and the contact piece, and is wound around the threaded connection column to enhance friction, and then the threaded cap and the threaded connection column are rotated and tightened to compress and fix the wire.

[0008] When the threaded cap column is rotated and tightened, the card block is pressed against the pressing piece through the elastic force of the spring telescopic rod, and slides into and out of the card slot in sequence under the drive of the threaded cap, until the threaded cap is completely rotated and tightened, and the card block is inserted into the corresponding card slot to prevent the threaded cap from reversing and causing the wire to loosen.

[0009] Preferably, the cross-sections of the card block and the card slot are respectively set to be triangular.

[0010] Preferably, the threaded connection column is configured to be a rounded rectangular shape, and a rounded rectangular opening is provided on the surface of the pressing sheet for the threaded connection column to pass through, thereby preventing the pressing sheet from rotating on the threaded connection column.

[0011] Preferably, the upward inclination direction of the oblique surfaces at the bottom of the clamping block and the clamping slot is consistent with the rotation and tightening direction of the threaded cap. The clamping block and the clamping slot cooperate to form a ratchet structure, so that the threaded cap can only be rotated downward to tighten during installation.

[0012] Preferably, an adjusting assembly is installed on the threaded cap, the fixed ring and the movable ring, and the adjusting assembly includes two slots, the slots are arranged on both sides of the threaded cap, the interior of the slots is rotatably connected to a rotating frame via a torsion spring shaft, and the end of the rotating frame located inside the threaded cap is higher than the end located outside the threaded cap due to the torsion force of the torsion spring. When the wire needs to be removed, the button is pressed downward and the threaded cap is rotated in the opposite direction. The button presses the rotating frame downward to rotate, and the movable ring is driven upward by the pull rope to compress the spring telescopic rod, so that the block exits the slot, so that the threaded cap can be rotated to remove the wire.

[0013] Preferably, a pull rope is fixedly connected to the bottom end of the rotating frame, and the bottom end of the pull rope passes through the fixed ring and is fixedly connected to the movable ring.

[0014] Preferably, the adjusting assembly further includes a button which is slidably installed at the center of the top of the threaded cap, and the rotating frame is inclined to press against the bottom of the button by the torsion of the torsion spring.

[0015] Preferably, a cross opening is formed at the top of the button and can be used to connect a screwdriver.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, the wire is placed between the pressing piece and the contact piece, and the threaded connection column is wound to enhance the friction force. Then, the threaded cap is rotated and tightened with the threaded connection column to press and fix the wire. Moreover, the block is inserted into the corresponding card slot to prevent the threaded cap from reversing and causing the wire to become loose. Compared with the prior art, it can be installed with one hand, and the operation is more convenient.

[0018] 2. In the present utility model, by pressing down the button and rotating the threaded cap in the reverse direction, the button presses down the rotating frame to generate rotation, and drives the movable ring to move upward through the pull rope to compress the spring telescopic rod, so that the block exits the card slot, and thus the threaded cap can be rotated and removed to disassemble the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic diagram of the unfolded structure of the contact piece and the pressing piece of the present utility model;

[0022] Figure 3 For the present utility model Figure 2 schematic diagram of structure A;

[0023] Figure 4 It is a schematic diagram of the threaded cap structure of the present utility model;

[0024] Figure 5 It is a schematic diagram of the adjusting assembly structure of the present utility model.

[0025] In the figure: 1. Shell; 2. Contact piece; 3. Threaded connection column; 4. Pressing piece; 5. Fixing assembly; 51. Threaded cap; 52. Fixing ring; 53. Movable ring; 54. Spring telescopic rod; 55. Block; 56. Slot; 6. Adjusting assembly; 61. Slot; 62. Rotating frame; 63. Pull rope; 64. Button. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] See also Figures 1-4 As shown, a solid-state relay structure includes a housing 1 of the solid-state relay, an input circuit, an isolation (coupling) and an output circuit are installed in the housing 1, contact pieces 2 are fixedly connected at the four corners of the housing 1, a threaded connection column 3 is fixedly connected above the contact piece 2, a pressing piece 4 is sleeved on the surface of the threaded connection column 3, a fixing assembly 5 is installed above the pressing piece 4, the fixing assembly 5 includes a threaded cap 51 and a card slot 56 distributed in an annular shape, the threaded cap 51 is threadedly connected to the threaded connection column 3, and the lower side wall of the threaded cap 51 is respectively A fixed ring 52 and a movable ring 53 are installed, the fixed ring 52 is fixedly connected to the threaded cap 51, spring telescopic rods 54 are fixedly connected to both sides of the fixed ring 52, and the bottom end of the spring telescopic rod 54 is fixedly connected to the movable ring 53, and a clamping block 55 is fixedly connected to the bottom of the movable ring 53, and a clamping groove 56 is provided on the surface of the pressing sheet 4. During installation, the wire is placed between the pressing sheet 4 and the contact sheet 2, and is wrapped around the threaded connecting column 3 to enhance friction, and then the threaded cap 51 and the threaded connecting column 3 are rotated and tightened to compress and fix the wire.

[0029] When the threaded cap 51 is rotated and tightened, the block 55 is pressed against the pressing piece 4 by the elastic force of the spring telescopic rod 54, and slides into and out of the slot 56 in sequence under the drive of the threaded cap 51, until the threaded cap 51 is completely rotated and tightened, and the block 55 is inserted into the corresponding slot 56 to prevent the threaded cap 51 from reversing and causing the wire to loosen.

[0030] The cross sections of the clamping block 55 and the clamping groove 56 are respectively set to be triangular.

[0031] The threaded connection column 3 is designed to be in a rounded rectangular shape, and a rounded rectangular opening is provided on the surface of the pressing sheet 4 for the threaded connection column 3 to pass through, so as to prevent the pressing sheet 4 from rotating on the threaded connection column 3 .

[0032] The upward inclination direction of the bottom slopes of the clamping block 55 and the clamping groove 56 is the same as the rotation and tightening direction of the threaded cap 51. The cooperation of the clamping block 55 and the clamping groove 56 forms a structure similar to a ratchet, so that the threaded cap 51 can only be rotated downward and tightened during installation.

[0033] Embodiment 2

[0034] Comparing with Embodiment 1, please refer to Figures 4-5 As shown, the present utility model provides another implementation manner. An adjusting component 6 is installed on the threaded cap 51, the fixed ring 52 and the movable ring 53. The adjusting component 6 includes two slotted openings 61 which are opened on both sides of the threaded cap 51. A rotating frame 62 is rotatably connected to the inside of the slotted opening 61 through a torsion spring rotating shaft. The torsion of the torsion spring at one end of the rotating frame 62 located inside the threaded cap 51 is higher than that at the end located outside the threaded cap 51. When the wire needs to be taken out, press the button 64 downward and rotate the threaded cap 51 in the reverse direction. The button 64 presses down the rotating frame 62 to generate rotation, and drives the movable ring 53 to move upward through the pull rope 63 to compress the spring telescopic rod 54, so that the clamping block 55 exits from the clamping groove 56, and thus the threaded cap 51 can be rotated and removed to disassemble the wire.

[0035] The bottom end of the rotating frame 62 is fixedly connected with a pull rope 63, and the bottom end of the pull rope 63 penetrates through the fixed ring 52 and is fixedly connected with the movable ring 53.

[0036] The adjusting component 6 further includes a button 64 which is slidably installed at the center of the top of the threaded cap 51. The rotating frame 62 is inclined to resist the bottom of the button 64 through the torsion of the torsion spring.

[0037] A cross opening is formed at the top of the button 64, which can be used to connect a screwdriver.

[0038] Working principle: During installation, place the wire between the pressing piece 4 and the contact piece 2, and wind the threaded connection column 3 to enhance the friction force. Then rotate and tighten the threaded cap 51 with the threaded connection column 3 to tightly fix the wire.

[0039] When the threaded cap 51 is rotated and tightened, the clamping block 55 resists the pressing piece 4 through the elastic force of the spring telescopic rod 54, and slides into and out of the clamping groove 56 in sequence under the drive of the threaded cap 51. Until the threaded cap 51 is completely rotated and tightened, the clamping block 55 is inserted into the corresponding clamping groove 56 to prevent the threaded cap 51 from reversing and causing the wire to loosen.

[0040] When the wire needs to be taken out, press the button 64 downward and rotate the threaded cap 51 in the reverse direction. The button 64 presses down the rotating frame 62 to generate rotation, and drives the movable ring 53 to move upward through the pull rope 63 to compress the spring telescopic rod 54, so that the clamping block 55 exits from the clamping groove 56, and thus the threaded cap 51 can be rotated and removed to disassemble the wire.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A solid-state relay structure, including the housing (1) of the solid-state relay, characterized in that: Contact pieces (2) are fixedly connected to the four corners of the housing (1) respectively. A threaded connection column (3) is fixedly connected above the contact piece (2). A pressing piece (4) is sleeved on the surface of the threaded connection column (3). A fixing assembly (5) is installed above the pressing piece (4). The fixing assembly (5) includes a threaded cap (51) and annularly distributed card slots (56). The threaded cap (51) is in threaded connection with the threaded connection column (3). A fixing ring (52) and a movable ring (53) are installed on the lower side wall of the threaded cap (51) from top to bottom. The fixing ring (52) is fixedly connected to the threaded cap (51). Spring telescopic rods (54) are fixedly connected to both sides of the fixing ring (52), and the bottom ends of the spring telescopic rods (54) are fixedly connected to the movable ring (53). A clamping block (55) is fixedly connected to the bottom of the movable ring (53). The card slots (56) are formed on the surface of the pressing piece (4).

2. The solid-state relay structure according to claim 1, wherein: The cross-sections of the clamping block (55) and the card slots (56) are respectively triangular.

3. The solid-state relay structure according to claim 1, characterized in that: The threaded connection column (3) is in the shape of a rounded rectangle, and a rounded rectangular opening is formed on the surface of the pressing piece (4) for the threaded connection column (3) to pass through.

4. The solid state relay structure according to claim 1, wherein: The upward inclination direction of the bottom slopes of the clamping block (55) and the card slots (56) is the same as the rotation and tightening direction of the threaded cap (51).

5. The solid-state relay structure according to claim 1, characterized in that: An adjusting assembly (6) is installed on the threaded cap (51), the fixing ring (52) and the movable ring (53). The adjusting assembly (6) includes two slots (61). The slots (61) are formed on both sides of the threaded cap (51). A rotating frame (62) is rotatably connected to the inside of the slots (61) through a torsion spring rotating shaft. The torsion of the torsion spring at one end of the rotating frame (62) located inside the threaded cap (51) is higher than that at the end located outside the threaded cap (51).

6. The solid-state relay structure according to claim 5, characterized in that: A pull rope (63) is fixedly connected to the bottom end of the rotating frame (62), and the bottom end of the pull rope (63) passes through the fixing ring (52) and is fixedly connected to the movable ring (53).

7. The solid state relay structure according to claim 5, wherein: The adjusting assembly (6) further includes a button (64). The button (64) is slidably installed at the center of the top of the threaded cap (51).

8. The solid state relay structure according to claim 7, characterized in that: A cross-shaped opening is formed at the top of the button (64).

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