Voltage-withstanding subminiature relay

Abstract

A voltage-withstanding subminiature relay belongs to the technical field of relays and comprises a base, a coil winding, an iron core, a yoke, an armature, a movable reed, a movable contact, a static reed and a static contact. The yoke comprises a bottom panel and a side panel, the bottom panel of the yoke is horizontally arranged between the base and the lower end of the coil rack and is riveted with the lower end of the iron core through a connecting hole in the center of the bottom panel, and the side panel of the yoke is vertically arranged on the right side of the coil winding; two protrusions are arranged in the middle of the yoke side panel side by side, two riveting holes are formed in the right side of the movable contact spring, and the two protrusions correspond to the two riveting holes respectively. The height of the convex bracts of the yoke is 0.6 + 0.15 to + 0.10 mm, the center distance between the two convex bracts is 5 + / -0.03 mm, and the movable contact spring and the yoke are respectively riveted and connected through the two riveting holes and the two convex bracts; the beneficial effects of the utility model are that under the condition that the volume is not increased, the dielectric withstand voltage value between the coil and the contact is improved, and the air gap between the coil and the contact is increased.

Description

Technical Field

[0001] The utility model discloses a relay, in particular to a voltage-resistant ultra-small relay, belonging to the technical field of relays. Background Art

[0002] Small pressure-resistant relays are widely used in communication devices, automatic remote control devices and various household appliances. While requiring the size of the relay to be very small, the creepage distance must be as large as possible, the withstand voltage between the coil and the contact must be as high as possible, and the air gap between the coil and the contact must be reduced. As customers' requirements for miniaturization of relays increase, the reduction in the withstand voltage of the medium between the coil and the contact and the reduction in the creepage distance without increasing the size of the relay cannot meet the requirements for enhanced insulation, and may even cause the contacts to short-circuit and burn out and fail. At the same time, the existing small pressure-resistant relays use a card-type installation method between the moving spring and the yoke, and the air gap between the coil and the contact is small, which poses a risk of high-voltage breakdown between the coil and the contact. Utility Model Content

[0003] The purpose of the utility model is to provide a pressure-resistant ultra-small relay, which can achieve the purpose of increasing the creepage distance between the coil and the yoke and improving the pressure-resistant value of the medium between the coil and the contacts without increasing the outer volume of the relay, in view of the fact that the prior art of the above-mentioned pressure-resistant small relay has the defects of reduced pressure resistance of the medium between the coil and the contacts and reduced creepage distance, which cannot meet the requirements of enhanced insulation and may even cause the contacts to short-circuit and burn out and fail, and the air gap between the coil and the contacts is small.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pressure-resistant ultra-small relay, including a base, a shell arranged on the base, and a magnetic circuit component and a contact component arranged between the base and the shell; the magnetic circuit component is arranged above the base, and the magnetic circuit component includes a coil winding, an iron core, a yoke and an armature, and the coil winding includes a coil frame and a coil; the coil frame includes a winding post, which is fixedly arranged on the base, and the winding post is vertically arranged in the middle of the coil frame, the coil is wound on the winding post, and the iron core is vertically inserted into the winding post; the yoke The iron is L-shaped and includes a bottom panel and a side panel. The bottom panel of the yoke is horizontally arranged between the base and the lower end of the coil frame. The bottom panel of the yoke is riveted to the lower end of the iron core through the connection hole in the center thereof. The side panel of the yoke is vertically arranged on the right side of the coil winding. The armature is arranged in the upper part of the housing, the left end of the armature is above the iron core, and the right end is above the side of the yoke. The contact assembly is arranged in the upper left part of the housing, and the contact assembly includes a moving spring, a moving contact, a static spring and a static contact. The upper part of the moving spring is arranged above the armature, and the right side of the moving spring is arranged on the right side of the yoke side panel.

[0005] Two convex buds are arranged side by side in the middle of the side panel of the yoke, and two rivet holes are arranged on the right side of the movable spring, and the two convex buds are arranged corresponding to the two rivet holes respectively; the height of the convex bud of the yoke is 0.6+0.15 to +0.10mm, and the center distance between the two convex buds is 5±0.03mm, which is convenient for installation; the movable spring and the yoke do not use the ear installation method, and the movable spring and the yoke are riveted and connected respectively through the two rivet holes and the two convex buds;

[0006] The thickness of the yoke is increased to 1.2±0.03mm, the width of the bottom panel of the yoke is reduced to 7-0.1 to -0mm, and the width of the side panel of the yoke is reduced to 8mm. While ensuring sufficient magnetic flux, the distance between the edge of the bottom panel of the yoke and the lead-out pin of the coil is increased, and the creepage distance between the yoke and the coil pin along the bottom of the coil frame is increased. The creepage distance is increased from the original 2.8mm to 3.6mm; without increasing the outer volume of the relay, the dielectric withstand voltage value between the coil and the contact is increased from 1500VAC / 1min to 2500VAC / 1min.

[0007] It comprises two square pins which are respectively connected to the two ends of the coil and fixed to the bottom of the coil frame along the vertical direction.

[0008] The winding post diameter is reduced to 3.8±0.05mm, and the coil winding diameter is reduced from 11.5mm to 8.5mm, increasing the air gap; the winding post height, i.e. the winding width, is increased from 6.9±0.03 to 7.7±0.03mm, increasing the number of coil turns and enhancing the suction force.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] By adjusting the thickness and width of the yoke, the thickness r of the yoke is increased to 1.2±0.03mm, the bottom panel width q1 of the yoke is reduced to 7-0.1 to 0mm, and the side panel width q2 of the yoke is reduced to 8mm; at the same time, by designing a relay magnetic circuit system, adjusting the coil winding and changing the installation method of the yoke and the moving spring; thus, a new high-voltage ultra-small relay is designed, which ensures sufficient magnetic flux while increasing the creepage distance between the coil and the yoke, and increases the dielectric withstand voltage between the coil and the contact from 1500VAC / 1min to 2500VAC / 1min without increasing the size of the relay. At the same time, the ear installation method between the moving spring and the yoke is cancelled, and riveting is adopted to increase the air gap between the coil and the contact, and improve the anti-puncture and withstand voltage between the coil and the contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is: the front sectional view of the utility model (with the names of the main components marked);

[0012] Figure 2 It is: the front sectional view of the utility model (with dimensions of the main parts marked);

[0013] Figure 3 Yes: Top view of the yoke (diagram of the thickness of the yoke);

[0014] Figure 4 Yes: Left view of the yoke (diagram of yoke thickness);

[0015] Figure 5 Yes: Stereoscopic view of yoke.

[0016] Explanation of the reference numerals: base 1, shell 2, coil winding 3, coil frame 301, coil 302, winding post 303, iron core 4, yoke 5, bottom panel 501, side panel 502, connecting hole 503, convex bulge 504, armature 6, moving reed 7, moving contact 8, static reed 9, static contact 10, pin 11. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1 to 5 As shown, a voltage-resistant ultra-small relay, such as Figure 1 and Figure 2As shown, it includes a base 1, a shell 2 arranged on the base 1, and a magnetic circuit component and a contact component arranged between the base 1 and the shell 2; the magnetic circuit component is arranged above the base 1, and the magnetic circuit component includes a coil winding 3, an iron core 4, a yoke 5 and an armature 6, and the coil winding 3 includes a coil frame 301 and a coil 302; the coil frame 301 includes a winding post 303, which is fixedly arranged on the base 1, and the winding post 303 is arranged in a vertical direction in the middle of the coil frame 301, and the coil 302 is wound on the winding post 303, and the iron core 4 is inserted in the winding post 303 in a vertical direction; the yoke 5 is L-shaped, including a bottom panel 501 and a side panel 502, the bottom panel 501 of the yoke 5 is horizontally arranged between the base 1 and the lower end of the coil frame 301, the bottom panel 501 of the yoke 5 is riveted to the lower end of the iron core 4 through the connecting hole 503 at the center thereof, and the side panel 502 of the yoke 5 is vertically arranged on the right side of the coil winding 3; the armature 6 is arranged on the upper inner part of the housing 2, the left end of the armature 6 is above the iron core 4, and the right end is above the side of the yoke 5; the contact assembly is arranged on the upper left inner part of the housing 2, and the contact assembly includes a moving spring 7, a moving contact 8, a static spring 9 and a static contact 10; the upper part of the moving spring 7 is arranged above the armature 6, and the right side of the moving spring 7 is arranged on the right side of the side panel 502 of the yoke 5;

[0019] like Figure 1 and Figure 4 As shown, two convex buds 504 are arranged side by side in the middle of the side panel 502 of the yoke 5, and two rivet holes are arranged on the right side of the movable spring 7, and the two convex buds are arranged corresponding to the two rivet holes respectively; the convex bud height u of the yoke 5 is 0.6+0.15 to +0.10mm, and the center distance t of the two convex buds is 5±0.03mm, which is convenient for installation; the movable spring 7 and the yoke 5 cancel the ear installation mode, and the movable spring 7 and the yoke 5 are riveted and connected respectively through the two rivet holes and the two convex buds;

[0020] like Figure 2 , Figure 3 and Figure 4 As shown, the thickness r of the yoke 5 is increased to 1.2±0.03mm, the width q1 of the bottom panel 501 of the yoke 5 is reduced to 7-0.1 to -0mm, and the width q2 of the side panel 502 of the yoke 5 is reduced to 8mm. While ensuring sufficient magnetic flux, the distance from the edge of the bottom panel 501 of the yoke 5 to the lead-out pin of the coil 302 is increased, and the creepage distance between the yoke 5 and the coil 302 along the bottom of the coil frame 301 is increased, and the creepage distance is increased from the original 2.8mm to 3.6mm; without increasing the outer volume of the relay, the dielectric withstand voltage value between the coil 302 and the contact is increased from 1500VAC / 1min to 2500VAC / 1min.

[0021] like Figure 1 and Figure 2As shown, two square pins 11 are also included, which are respectively connected to the two ends of the coil 302 and fixed to the bottom of the coil frame along the vertical direction.

[0022] like Figure 2 As shown, the diameter φ1 of the winding post 303 is reduced to 3.8±0.05mm, and the diameter φ2 of the coil winding 3 is reduced from 11.5mm to 8.5mm, thereby increasing the air gap; the height of the winding post 303, i.e., the winding width K, is increased from 6.9±0.03 to 7.7±0.03mm, thereby increasing the number of winding turns of the coil 302 and enhancing the suction force.

[0023] The embodiments described above are only preferred implementations of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A voltage-resistant ultra-small relay, comprising a base, a shell arranged on the base, and a magnetic circuit assembly and a contact assembly arranged between the base and the shell; the magnetic circuit assembly is arranged above the base, the magnetic circuit assembly comprises a coil winding, an iron core, and an armature, and the coil winding comprises a coil frame and a coil; the coil frame comprises a winding post, which is fixedly arranged on the base, the winding post is arranged in a vertical direction in the middle of the coil frame, the coil is wound on the winding post, and the iron core is inserted in the winding post in a vertical direction; the armature is arranged in the upper inner part of the shell, the left end of the armature is above the iron core, and the right end is above the side surface of the yoke; the contact assembly is arranged in the upper left inner part of the shell, the contact assembly comprises a moving spring, a moving contact, a static spring and a static contact; the upper part of the moving spring is arranged above the armature; characterized in that: It also includes a yoke, which is L-shaped and includes a bottom panel and a side panel. The bottom panel of the yoke is horizontally arranged between the base and the lower end of the coil frame, the bottom panel of the yoke is riveted to the lower end of the iron core through a connecting hole in the center thereof, and the side panel of the yoke is vertically arranged on the right side of the coil winding; the right side portion of the movable spring is arranged on the right side of the side panel of the yoke; Two convex buds are arranged side by side in the middle of the side panel of the yoke, and two rivet holes are arranged on the right side of the movable spring, and the two convex buds are arranged corresponding to the two rivet holes respectively; the height of the convex bud of the yoke is 0.6+0.15 to +0.10mm, and the center distance between the two convex buds is 5±0.03mm, and the movable spring and the yoke are riveted and connected respectively through the two rivet holes and the two convex buds; The thickness of the yoke is 1.2±0.03mm, the width of the bottom panel of the yoke is 7-0.1 to -0mm, the width of the side panel of the yoke is 8mm, and the creepage distance is 3.6mm; the dielectric withstand voltage value between the coil and the contact is 2500VAC / 1min.

2. A voltage-resistant subminiature relay according to claim 1, characterized in that: It also includes two square pins, which are respectively connected to the two ends of the coil and fixed to the bottom of the coil frame along the vertical direction.

3. The voltage-resistant subminiature relay according to claim 1, characterized in that: The diameter of the winding post is 3.8±0.05mm, and the diameter of the coil winding is 8.5mm, which increases the air gap; the height of the winding post, that is, the winding width, is 7.7±0.03mm, which increases the number of turns of the coil and enhances the suction force.

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