Relay structure with enhanced insulation

Abstract

The utility model relates to the technical field of relays, in particular to a relay structure with reinforced insulation, which comprises a framework, a pin A and a pin B arranged on the framework and a reed arranged between the pin A and the pin B. The pin A and the pin B are arranged in parallel at an interval, a rib is arranged on one side of the framework close to the pin A, a step is arranged on one side of the framework close to the pin B, and the step is arranged on the other side of the framework close to the pin B. The rib and the step are arranged with the framework at intervals, one end of the pin A abuts against the position between the bottom face of the rib and the bottom face of the framework, the other end of the pin A abuts against the position between the bottom face of the step and the bottom face of the framework, and one end of the pin B abuts against the position between the top face of the step and the top face of the framework. The other end of the pin B abuts against the position between the top face of the rib and the top face of the framework. According to the utility model, the ribs and the steps are arranged on the framework, so that the creepage distance between the pin A and the reed is increased, the insulation performance is enhanced, and the service life of the relay is prolonged.

Description

Technical Field

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

[0002] A relay is an electrical control device. When the change in input quantity reaches the specified requirements, it causes a predetermined step change in the controlled quantity in the electrical output circuit. It has an interactive relationship between the input circuit and the output circuit. It is usually used in automated control circuits. In fact, it is an automatic switch that uses a small current to control a large current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit. During the use of the relay, the contact consumption is prone to produce splashes that splash onto the frame, causing carbonization of the frame. Due to the insufficient creepage distance between the A foot and the reed, a short circuit occurs between the A foot and the reed, causing the insulation performance of the relay to fail and shortening the service life of the relay. Utility Model Content

[0003] The utility model aims to provide a relay structure with enhanced insulation in view of the deficiencies in the prior art. By arranging ribs and steps on the frame, the creepage distance between the A foot and the reed is increased, the insulation performance is enhanced, and the service life of the relay is prolonged.

[0004] To achieve the above-mentioned purpose, the utility model provides a relay structure with enhanced insulation, comprising a frame, an A foot and a B foot arranged on the frame, and a reed arranged between the A foot and the B foot, wherein the A foot and the B foot are arranged at intervals and in parallel, a rib is arranged on the side of the frame close to the A foot, and a step is arranged on the side of the frame close to the B foot, the rib and the step are respectively arranged at intervals from the frame, one end of the A foot abuts between the bottom surface of the rib and the bottom surface of the frame, the other end of the A foot abuts between the bottom surface of the step and the bottom surface of the frame, one end of the B foot abuts between the top surface of the step and the top surface of the frame, and the other end of the B foot abuts between the top surface of the rib and the top surface of the frame.

[0005] Preferably, a first gap groove is provided between the rib and the bottom surface of the frame, and between the step and the bottom surface of the frame, the first gap groove is provided along the length direction of the frame, the bottom wall of the rib is provided with a first upper positioning block, the bottom wall of the frame is provided with a first lower positioning block, the first upper positioning block and the first lower positioning block are arranged relative to each other so that the first upper positioning block and the first lower positioning block respectively contact the upper surface and the lower surface of one end of the positioning A foot, the bottom wall of the step is provided with a second upper positioning block, the bottom wall of the frame is provided with a second lower positioning block, the second upper positioning block and the second lower positioning block are arranged relative to each other so that the second upper positioning block and the second lower positioning block respectively contact the upper surface and the lower surface of the other end of the positioning A foot.

[0006] Preferably, a second gap groove is provided between the rib and the top surface of the frame, and between the step and the top surface of the frame, and the second gap groove is provided along the length direction of the frame. The top wall of the frame is convexly provided with a third upper positioning block, and the top wall of the step is convexly provided with a third lower positioning block. The third upper positioning block and the third lower positioning block are arranged relative to each other so that the third upper positioning block and the third lower positioning block respectively contact the upper surface and the lower surface of one end of the positioning B foot. The top wall of the frame is convexly provided with a fourth upper positioning block, and the top wall of the rib is convexly provided with a fourth lower positioning block. The fourth upper positioning block and the fourth lower positioning block are arranged relative to each other so that the fourth upper positioning block and the fourth lower positioning block respectively contact the upper surface and the lower surface of the other end of the positioning B foot.

[0007] Preferably, a first insertion slot and a second insertion slot are respectively provided on both sides of the skeleton, and the first insertion slot and the second insertion slot are both arranged along the height direction of the skeleton, the first insertion slot is connected with the first gap slot so that the A foot is accommodated between the first insertion slot and the first gap slot, and the second insertion slot is connected with the second gap slot so that the B foot is accommodated between the second insertion slot and the second gap slot.

[0008] Preferably, a first limit block is protruding from the inner groove wall of the first insertion groove, and the first limit block stops and abuts against the outer wall of the A foot. A second limit block is protruding from the inner groove wall of the second insertion groove, and the second limit block abuts against the outer wall of the B foot.

[0009] The beneficial effects of the utility model are as follows: by arranging ribs and steps on the frame, the creepage distance between the A foot and the spring sheet is increased, the insulation performance is enhanced, and the service life of the relay is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a front view structural schematic diagram of the utility model.

[0012] Figure 3 It is a schematic diagram of the skeleton structure of the utility model.

[0013] Reference numerals include:

[0014] 1——A foot 2——B foot

[0015] 3——Frame 31——First lower positioning block 32——Second lower positioning block

[0016] 33——third upper positioning block 34——fourth upper positioning block 35——first insertion slot

[0017] 36——Second insertion slot 37——First limit block 38——Second limit block

[0018] 4 - Reed

[0019] 5——rib 51——first upper positioning block 52——fourth lower positioning block

[0020] 6——Step 61——Second upper positioning block 62——Third lower positioning block

[0021] 7——first gap groove 8——second gap groove. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a relay structure with reinforced insulation of the utility model comprises a skeleton 3, an A foot 1 and a B foot 2 arranged on the skeleton 3, and a reed 4 arranged between the A foot 1 and the B foot 2, wherein the A foot 1 and the B foot 2 are arranged spaced apart and in parallel, a rib 5 is arranged on the side of the skeleton 3 close to the A foot 1, and a step 6 is arranged on the side of the skeleton 3 close to the B foot 2, the rib 5 and the step 6 are respectively spaced apart from the skeleton 3, one end of the A foot 1 abuts between the bottom surface of the rib 5 and the bottom surface of the skeleton 3, the other end of the A foot 1 abuts between the bottom surface of the step 6 and the bottom surface of the skeleton 3, one end of the B foot 2 abuts between the top surface of the step 6 and the top surface of the skeleton 3, and the other end of the B foot 2 abuts between the top surface of the rib 5 and the top surface of the skeleton 3.

[0024] At present, there are two ways to enhance the insulation performance of relays. One is to use plastic materials with higher CTI values. In the field of materials science, CTI values ​​usually refer to "Comparative Tracking Index" (CTI for short). The full Chinese name is "Comparative Tracking Index" or "Leakage Tracking Index". CTI value is an indicator used to measure the ability of insulating materials to resist the formation of leakage paths in electrical equipment. The commonly used detection standard is IEC 60112 standard; the other is to increase the creepage distance at the load end. Creepage distance is an important concept in the field of electrical safety. It refers to the shortest path between two conductive parts or between conductive parts and the protective interface of the equipment measured along the surface of the insulating material. Under different usage conditions, the insulating material around the conductor is polarized, causing the insulating material to become charged. This creepage distance is to prevent the surface discharge of the dielectric caused by the potential difference between the conductors, also known as creepage phenomenon. The present application is aimed at the structural design optimization of the creepage distance, by adding ribs 5 and steps 6 in the skeleton 3. Since the ribs 5 and steps 6 are respectively arranged at intervals from the skeleton 3, and the ribs 5 and steps 6 are separated from the skeleton 3, They are located on both sides of the frame 3, so that one end of the A foot 1 contacts between the bottom surface of the rib 5 and the bottom surface of the frame 3, and the other end of the A foot 1 contacts between the bottom surface of the step 6 and the bottom surface of the frame 3, and a surface contact method is adopted to increase the contact area between the A foot 1 and the rib 5 and the step 6, and the connection is stable and reliable, and one end of the B foot 2 contacts between the top surface of the step 6 and the top surface of the frame 3, and the other end of the B foot 2 contacts between the top surface of the rib 5 and the top surface of the frame 3, and a surface contact method is adopted to increase the contact area between the B foot 2 and the rib 5 and the step 6, and the connection is stable and reliable, thereby realizing that the A foot 1 and the B foot 2 are arranged at an upper and lower interval relative to the reed 4, effectively increasing the creepage distance between the A foot 1 and the reed 4, and enhancing the insulation performance. In electrical safety standards, such as UL, CSA and VDE, there are clear safety requirements for creepage distance to prevent sparks between devices or between devices and ground, thereby threatening personal safety. The utility model increases the creepage distance between the A foot 1 and the reed 4 by arranging the ribs 5 and the steps 6 on the frame 3, thereby enhancing the insulation performance and prolonging the service life of the relay.

[0025] In this embodiment, a first gap groove 7 is provided between the rib 5 and the bottom surface of the frame 3, and between the step 6 and the bottom surface of the frame 3. The first gap groove 7 is arranged along the length direction of the frame 3. The bottom wall of the rib 5 is convexly provided with a first upper positioning block 51, and the bottom wall of the frame 3 is convexly provided with a first lower positioning block 31. The first upper positioning block 51 and the first lower positioning block 31 are arranged opposite to each other so that the first upper positioning block 51 and the first lower positioning block 31 respectively abut against the upper surface and the lower surface of one end of the positioning A foot 1. The bottom wall of the step 6 is convexly provided with a second upper positioning block 61, and the bottom wall of the frame 3 is convexly provided with a second lower positioning block 32. The second upper positioning block 61 and the second lower positioning block 32 are arranged opposite to each other so that the second upper positioning block 61 and the second lower positioning block 32 respectively abut against the upper surface and the lower surface of the other end of the positioning A foot 1. Specifically, the first gap groove 7 is located between the rib 5 and the bottom surface of the frame 3 and between the step 6 and the bottom surface of the frame 3, and the first gap groove 7 is arranged along the length direction of the frame 3, so that the A foot 1 can be horizontally installed in the first gap groove 7, and one end of the A foot 1 is positioned by the first upper positioning block 51 and the first lower positioning block 31, and the other end of the A foot 1 is positioned by the second upper positioning block 61 and the second lower positioning block 32, thereby realizing the upper and lower clamping and fixing of the A foot 1, and the positioning is accurate to prevent loosening and detachment, thereby increasing the creepage distance between the A foot 1 and the spring leaf 4.

[0026] In this embodiment, a second gap groove 8 is provided between the rib 5 and the top surface of the skeleton 3, and between the step 6 and the top surface of the skeleton 3. The second gap groove 8 is arranged along the length direction of the skeleton 3. The top wall of the skeleton 3 is convexly provided with a third upper positioning block 33, and the top wall of the step 6 is convexly provided with a third lower positioning block 62. The third upper positioning block 33 and the third lower positioning block 62 are arranged opposite to each other so that the third upper positioning block 33 and the third lower positioning block 62 respectively abut against the upper surface and lower surface of one end of the positioning B foot 2. The top wall of the skeleton 3 is convexly provided with a fourth upper positioning block 34, and the top wall of the rib 5 is convexly provided with a fourth lower positioning block 52. The fourth upper positioning block 34 and the fourth lower positioning block 52 are arranged opposite to each other so that the fourth upper positioning block 34 and the fourth lower positioning block 52 respectively abut against the upper surface and lower surface of the other end of the positioning B foot 2. Specifically, the second gap groove 8 is located between the rib 5 and the top surface of the frame 3 and between the step 6 and the top surface of the frame 3, and the second gap groove 8 is arranged along the length direction of the frame 3, so that the B foot 2 can be horizontally installed in the second gap groove 8, and one end of the B foot 2 is jointly positioned by the third upper positioning block 33 and the third lower positioning block 62, and the other end of the B foot 2 is jointly positioned by the fourth upper positioning block 34 and the fourth lower positioning block 52, thereby realizing the upper and lower clamping and fixing of the B foot 2 to prevent loosening and detachment, so that the B foot and the A foot are spaced and arranged in parallel to ensure the creepage distance between the B foot and the A foot.

[0027] The skeleton 3 of this embodiment is provided with a first insertion groove 35 and a second insertion groove 36 on both sides. The first insertion groove 35 and the second insertion groove 36 are both arranged along the height direction of the skeleton 3. The first insertion groove 35 is connected with the first gap groove 7 so that the A foot 1 is accommodated between the first insertion groove 35 and the first gap groove 7. The second insertion groove 36 is connected with the second gap groove 8 so that the B foot 2 is accommodated between the second insertion groove 36 and the second gap groove 8. Specifically, the first insertion groove 35 and the second insertion groove 36 are respectively arranged on both sides of the skeleton 3, and the first insertion groove 35 and the second insertion groove 36 are both arranged along the height direction of the skeleton 3, and the first insertion groove 35 is connected with the first gap groove 7, so that the A foot 1 with an L-shaped structure is inserted and accommodated between the first insertion groove 35 and the first gap groove 7, and the second insertion groove 36 is connected with the second gap groove 8, so that the B foot 2 with an L-shaped structure is inserted and accommodated between the second insertion groove 36 and the second gap groove 8, thereby enhancing the installation stability of the A foot 1 and the B foot 2 on the skeleton 3.

[0028] In this embodiment, the inner groove wall of the first insertion groove 35 is provided with a first stopper 37, and the first stopper 37 stops and abuts against the outer wall of the A foot 1. The inner groove wall of the second insertion groove 36 is provided with a second stopper 38, and the second stopper 38 abuts against the outer wall of the B foot 2. Specifically, the first stopper 37 stops and abuts against the outer wall of the A foot 1, so that the A foot 1 fits and abuts between the outer wall of the rib 5 and the outer wall of the first stopper 37, and the second stopper 38 abuts against the outer wall of the B foot 2, so that the B foot 2 fits and abuts between the outer wall of the frame 3 and the outer wall of the second stopper 38, and the abutment area is large, which further enhances the position fixing effect.

[0029] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A relay structure with reinforced insulation, characterized in that: It includes a frame, an A foot and a B foot arranged on the frame, and a spring sheet arranged between the A foot and the B foot, wherein the A foot and the B foot are arranged at intervals and in parallel, a rib is arranged on the side of the frame close to the A foot, and a step is arranged on the side of the frame close to the B foot, the rib and the step are respectively arranged at intervals from the frame, one end of the A foot abuts between the bottom surface of the rib and the bottom surface of the frame, the other end of the A foot abuts between the bottom surface of the step and the bottom surface of the frame, one end of the B foot abuts between the top surface of the step and the top surface of the frame, and the other end of the B foot abuts between the top surface of the rib and the top surface of the frame.

2. A reinforced insulation relay structure according to claim 1, characterized in that: A first gap groove is provided between the rib and the bottom surface of the frame, and between the step and the bottom surface of the frame, and the first gap groove is provided along the length direction of the frame. The bottom wall of the rib is provided with a first upper positioning block, and the bottom wall of the frame is provided with a first lower positioning block. The first upper positioning block and the first lower positioning block are arranged opposite to each other so that the first upper positioning block and the first lower positioning block respectively contact the upper surface and the lower surface of one end of the positioning A foot. The bottom wall of the step is provided with a second upper positioning block, and the bottom wall of the frame is provided with a second lower positioning block. The second upper positioning block and the second lower positioning block are arranged opposite to each other so that the second upper positioning block and the second lower positioning block respectively contact the upper surface and the lower surface of the other end of the positioning A foot.

3. A relay structure with reinforced insulation according to claim 2, characterized in that: A second gap groove is provided between the rib and the top surface of the frame, and between the step and the top surface of the frame, and the second gap groove is provided along the length direction of the frame. The top wall of the frame is convexly provided with a third upper positioning block, and the top wall of the step is convexly provided with a third lower positioning block. The third upper positioning block and the third lower positioning block are arranged relative to each other so that the third upper positioning block and the third lower positioning block respectively contact the upper surface and the lower surface of one end of the positioning B foot. The top wall of the frame is convexly provided with a fourth upper positioning block, and the top wall of the rib is convexly provided with a fourth lower positioning block. The fourth upper positioning block and the fourth lower positioning block are arranged relative to each other so that the fourth upper positioning block and the fourth lower positioning block respectively contact the upper surface and the lower surface of the other end of the positioning B foot.

4. A relay structure with reinforced insulation according to claim 3, characterized in that: A first insertion slot and a second insertion slot are respectively provided on both sides of the frame, and the first insertion slot and the second insertion slot are both provided along the height direction of the frame. The first insertion slot is connected with the first gap slot so that the A foot is accommodated between the first insertion slot and the first gap slot, and the second insertion slot is connected with the second gap slot so that the B foot is accommodated between the second insertion slot and the second gap slot.

5. A relay structure with reinforced insulation according to claim 4, characterized in that: A first limit block is protruded from the inner groove wall of the first insertion groove, and the first limit block stops and abuts against the outer wall of the A foot. A second limit block is protruded from the inner groove wall of the second insertion groove, and the second limit block abuts against the outer wall of the B foot.

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