Miniature relay

Abstract

The utility model discloses a miniature relay. The miniature relay comprises a base; the magnetic circuit driving part is mounted on the base and comprises a coil, an iron core, an armature and a push rod; the contact part is installed on the base and comprises a movable spring module and a static spring module, the static spring module comprises a static spring piece and a static contact arranged on the static spring piece, the movable spring module comprises a movable spring piece and a movable contact arranged on the movable spring piece, and the movable spring piece can be pushed by the push rod to generate elastic deformation so as to drive the movable contact and the static contact to be closed; and the elastic sheet structure is installed between the iron core and / or the base, abuts against the armature in the separated state and can limit the armature in the moving direction of the armature when the armature is recovered from the closed state to the separated state. According to the relay provided by the utility model, the mounting position of the armature can be limited, the relay is prevented from shaking during carrying, and meanwhile, the return of the armature can be limited, so that the armature can be stably recovered to a separated state.

Description

Technical Field

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

[0002] Relays are generally composed of a base, a cover, a magnetic circuit part, and a contact part. The magnetic circuit part includes components such as a coil, an iron core, a yoke, and an armature, and the contact part includes a moving spring part and a static spring part. When current passes through the coil, electromagnetic force is generated, the armature is attracted, and the movement of the armature drives the movement of the push rod, which drives the moving spring piece to deform, thereby achieving the closing of the moving contact and the static contact; when the current in the coil disappears, the electromagnetic force disappears, and the armature resets, so that the moving contact of the moving spring part is disconnected or in contact with the static contact of the static spring part, so that the purpose of conducting or cutting off the external load circuit is achieved through the attraction or disconnection of the moving contact and the static contact.

[0003] After the coil is powered off, the deformation force generated by the moving spring can push the push rod to reset, and the push rod drives the armature to reset. However, since the armature is in a free state, it may shake during the transportation process. Utility Model Content

[0004] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, a small relay is provided, comprising:

[0005] Pedestal;

[0006] The magnetic circuit driving part is installed on the base, and includes a coil, an iron core, an armature and a push rod. The armature is installed on the push rod and can be attracted or separated from the iron core. When the armature is adjusted from a separated state to a closed state, it can drive the push rod to move;

[0007] The contact part is installed on the base, including a dynamic spring module and a static spring module, wherein the static spring module includes a static spring sheet and a static contact point arranged on the static spring sheet, and the dynamic spring module includes a dynamic spring sheet and a dynamic contact point arranged on the dynamic spring sheet, wherein the dynamic spring sheet can be elastically deformed under the push of the push rod to drive the dynamic contact point and the static contact point to close;

[0008] The spring structure is installed between the iron core and / or the base, and abuts against the armature in the separated state, and can limit the armature along the moving direction of the armature when the armature is restored from the closed state to the separated state.

[0009] In some embodiments, the spring structure includes an installation section, a supporting section and a limiting section, the installation section is installed on the iron core and / or the base, the supporting section and the installation section are arranged in an L shape, and are used to support the armature when the armature is in the separated state, and the limiting section is connected to the supporting section, and is used to support the armature along the movement direction of the armature when the armature is restored from the closed state to the separated state.

[0010] In some embodiments, the mounting section is clamped between the base and the iron core, a slot is provided on the iron core, a block is provided on the mounting section, and the block is clamped in the slot.

[0011] In some embodiments, two limiting sections are provided on the abutting section, and the two limiting sections are separated and arranged along a direction perpendicular to the movement direction of the push rod.

[0012] In some embodiments, the limiting section includes a first connecting portion and an extension portion, wherein the first connecting portion is connected to the supporting section and extends away from the iron core and toward one side of the base, and the extension portion extends toward the iron core and is used to support the armature to limit the armature.

[0013] In some embodiments, the limiting section also includes a limiting portion, which is connected to an end of the extension portion away from the first connecting portion and extends toward the push rod for abutting against the armature, wherein the limiting portion and the first connecting portion are arranged in parallel.

[0014] In some embodiments, a notch is provided on the armature, and when the armature is in the separated state, the limiting portion is clamped in the notch.

[0015] In some embodiments, the abutting section includes a second connecting portion and a supporting portion, the second connecting portion is connected to the mounting section, the supporting portion is arranged at an end of the second connecting portion away from the mounting section, and is used to abut against the armature in a separated state, wherein the supporting portion and the second connecting portion are arranged at an angle, and the angle is greater than 90°.

[0016] In some embodiments, the abutting section includes two abutting portions, and the two abutting portions are separately arranged on the second connecting portion along a direction perpendicular to the movement direction of the armature.

[0017] In some embodiments, the installation section, the supporting section, and the limiting section are integrally provided.

[0018] In summary, the small relay provided by the utility model has the following technical effects:

[0019] By arranging a spring structure on the base and / or the iron core, when the armature is in a separated state, it can be abutted against the armature to limit the installation position of the armature and prevent the relay from shaking during transportation; at the same time, in the process of the armature recovering from a closed state to a separated state, the return position of the armature can be limited, thereby ensuring that the armature can stably recover to the separated state, thereby increasing the assembly strength of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a small relay according to an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A top view of the relay in FIG.

[0022] Figure 3 for Figure 2 Schematic diagram of the cross section along AA;

[0023] Figure 4 for Figure 1 A schematic diagram of the structure of the iron core and the spring structure;

[0024] Figure 5 for Figure 1 The schematic diagram of the structure of the shrapnel structure in FIG.

[0025] Figures: 100-small relay, 10-base, 20-magnetic circuit driving part, 21-iron core, 211-slot, 22-coil, 23-armature, 231-notch, 24-push rod, 30-contact part, 31-moving spring module, 311-moving spring sheet, 312-moving contact, 32-static spring module, 321-static spring sheet, 322-static contact, 40-spring structure, 41-installing section, 42-holding section, 421-second connecting part, 422-holding part, 43-limiting section, 431-first connecting part, 432-extension part, 433-limiting part, 44-block. DETAILED DESCRIPTION

[0026] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figures 1 to 5 , a small relay 100 provided in an embodiment of the utility model includes a base 10, a magnetic circuit driving part 20, a contact part 30 and a spring structure 40.

[0031] Among them, see Figures 1 to 3 The base 10 is used as the installation base; the magnetic circuit driving part 20 is installed on the base 10, including the iron core 21, the armature 23, the push rod 24 and the coil, the armature 23 is installed on the push rod 24, and can be attracted or separated from the iron core 21, and when the armature 23 is adjusted from the separated state to the closed state, it can drive the push rod 24 to move; the contact part 30 is installed on the base 10, including the dynamic spring module 31 and the static spring module 32, the static spring module 32 includes a static spring sheet 321 and a static contact 322 arranged on the static spring sheet 321, and the static spring sheet 321 Installed on the base 10, the dynamic spring module 31 includes a dynamic spring piece 311 and a dynamic contact 312 arranged on the dynamic spring piece 311. The dynamic spring piece 311 is installed on the base 10, and can be elastically deformed under the push of the push rod 24, thereby driving the dynamic contact 312 and the static contact 322 to close; the spring structure 40 is installed between the iron core 21 and / or the base 10, and is against the armature 23 in the separated state, and can limit the armature 23 along the movement direction of the armature 23 when the armature 23 recovers from the closed state to the separated state.

[0032] The above-mentioned small relay 100, by setting a spring structure 40 on the base 10 and / or the iron core 21, can abut against the armature 23 when the armature 23 is in a separated state, so as to limit the installation position of the armature 23 and prevent the relay 100 from shaking during transportation; at the same time, in the process of the armature 23 recovering from the closed state to the separated state, the return position of the armature 23 can be limited, thereby ensuring that the armature 23 can stably recover to the separated state, thereby increasing the assembly strength of the relay 100.

[0033] Specifically, see Figures 3 to 5The spring structure 40 is generally L-shaped, including a mounting section 41, a holding section 42 and a limiting section 43. The mounting section 41 is mounted on the iron core 21 and / or the base 10. The holding section 42 and the mounting section 41 are arranged in an L-shape, and are used to hold the armature 23 when the armature 23 is in the separated state. The limiting section 43 is connected to the holding section 42, and is used to hold the armature 23 along the movement direction of the armature 23 when the armature 23 is restored from the closed state to the separated state. In this way, through the mounting section 41 The entire spring structure 40 is installed, and the supporting section 42 is used to support the armature 23 when the armature 23 is in the separated state, so as to limit the armature 23 in the initial state, thereby ensuring the installation stability of the armature 23 for easy transportation. By setting the limiting section 43, when the coil 22 is powered off and the armature 23 returns to the separated state, the armature 23 is supported by the armature 23 in the moving direction, so as to ensure that the armature 23 can stably return to the position of the separated state.

[0034] Among them, see Figure 3 and Figure 4 When installing the spring structure 40, the installation section 41 is sandwiched between the base 10 and the iron core 21, the iron core 21 is provided with a slot 211, and the installation section 41 is provided with a block 44, and the block 44 is sandwiched in the slot 211. In this way, the installation section 41 is sandwiched between the base 10 and the iron core 21, and the spring structure 40 is installed on the relay 100 through the cooperation of the block 44 and the slot 211. In other embodiments, the slot 211 can also be provided on the base 10, and the spring structure 40 can also be installed on the relay 100.

[0035] As can be understood, please refer to the figure, in order to be able to stably limit the armature 23 when the armature 23 is reset, two limiting sections 43 are provided on the abutting section 42, and the two limiting sections 43 are separated and arranged along a direction perpendicular to the movement direction of the push rod 24, that is, limiting sections 43 are provided on both sides of the abutting section along the width direction of the armature 23, so that the two limiting sections 43 can limit the two sides of the width direction of the armature 23, thereby ensuring the stability of the armature 23 when it is reset.

[0036] Specifically, see Figure 5 The limiting section 43 includes a first connecting portion 431 and an extending portion 432. The first connecting portion 431 is connected to the supporting section 42 and extends in a direction away from the iron core 21 and toward one side of the base 10. The extending portion 432 extends in the direction of the iron core 21 and is used to resist the armature 23 to limit the armature 23. In this embodiment, the extending portion 432 and the first connecting portion 431 are set at an angle of 90°. In this way, when the armature 23 is reset, it contacts the extending portion 432, generating a thrust on the extending portion 432, so as to generate a buffering effect through the first connecting portion 431 having elastic deformation properties.

[0037] Furthermore, in order to avoid scratching between the extension portion 432 and the armature 23, the limit section 43 also includes a limit portion 433, which is connected to one end of the extension portion 432 away from the first connecting portion 431 and extends in the direction of the armature 23, for abutting against the armature 23, wherein the limit portion 433 and the first connecting portion 431 are arranged in parallel, so that the limit portion 433 extending in the direction of the armature 23 is in contact with the armature 23, and is in surface contact with the armature 23, thereby avoiding direct collision when the end of the extension portion 432 abuts against the armature 23 and causing scratching damage to the armature 23.

[0038] Among them, a notch 231 is provided on the armature 23. When the armature 23 is in a separated state, the limiting portion 433 is clamped in the notch 231. In this way, by providing the notch 231 on the armature 23, the extension portion 432 can be partially extended into the armature 23, thereby preventing the extension portion 432 from extending too much to the side away from the armature 23 and increasing the length of the entire relay 100 along the movement direction of the armature 23.

[0039] See also Figure 5 In one embodiment of the utility model, the supporting section 42 includes a second connecting portion 421 and a supporting portion 422, the second connecting portion 421 is connected to the mounting section 41, and the supporting portion 422 is arranged at one end of the second connecting portion 41 away from the mounting section 41, and is used to resist the armature 43 in a separated state, wherein the supporting portion 422 and the second connecting portion 421 are arranged at an angle greater than 90°. In this way, by setting the second connecting portion 421 and the supporting portion 422 with an angle greater than 90°, a supporting portion 422 having a smaller contact area with the armature 23 can be arranged, and the armature 23 is pressed against the push rod 24 through the supporting portion 422.

[0040] Specifically, when setting the abutting portion 422, the abutting section 42 includes two abutting portions 422, and the two abutting portions 422 are separated and arranged on the second connecting portion 421 along a direction perpendicular to the movement direction of the armature 23. In this way, by setting two abutting portions 422, a smaller width of the abutting portion 422 can be set, which facilitates the bending and forming of the abutting portion 422 relative to the second connecting portion 421.

[0041] It should be noted that, in an embodiment of the present invention, the mounting section 41 , the abutting section 42 and the limiting section 43 are integrally provided, so as to facilitate the molding of the entire spring sheet structure 40 .

[0042] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A small relay (100), characterized in that: include: Base (10); A magnetic circuit driving part (20) is installed on the base (10), comprising a coil (22), an iron core (21), an armature (23) and a push rod (24); the armature (23) is installed on the push rod (24) and can be attracted to or separated from the iron core (21); and when the armature (23) is adjusted from a separated state to a closed state, it can drive the push rod (24) to move; The contact portion (30) is mounted on the base (10), and comprises a moving spring module (31) and a static spring module (32); the static spring module (32) comprises a static spring sheet (321) and a static contact (322) arranged on the static spring sheet (321); the moving spring module (31) comprises a moving spring sheet (311) and a moving contact (312) arranged on the moving spring sheet (311); the moving spring sheet (311) can be elastically deformed under the push of the push rod (24) to drive the moving contact (312) and the static contact (322) to close; The spring structure (40) is installed between the iron core (21) and / or the base (10), and abuts against the armature (23) in the separated state, and is capable of limiting the armature (23) along the movement direction of the armature (23) when the armature (23) is restored from the closed state to the separated state.

2. The small relay (100) according to claim 1, characterized in that: The spring structure (40) comprises a mounting section (41), a holding section (42) and a limiting section (43); the mounting section (41) is mounted on the iron core (21) and / or the base (10); the holding section (42) and the mounting section (41) are arranged in an L shape and are used to hold the armature (23) against the armature (23) when the armature (23) is in the separated state; the limiting section (43) is connected to the holding section (42) and is used to hold the armature (23) against the armature (23) along the moving direction of the armature (23) when the armature (23) is restored from the closed state to the separated state.

3. The small relay (100) according to claim 2, characterized in that: The mounting section (41) is clamped between the base (10) and the iron core (21); a slot (211) is provided on the iron core (21); a clamping block (44) is provided on the mounting section (41); and the clamping block (44) is clamped in the slot (211).

4. The small relay (100) according to claim 2, characterized in that: The abutting section (42) is provided with two limiting sections (43), and the two limiting sections (43) are spaced apart and arranged perpendicular to the movement direction of the push rod (24).

5. The small relay (100) according to any one of claims 2 to 4, characterized in that: The limiting section (43) comprises a first connecting portion (431) and an extending portion (432), wherein the first connecting portion (431) is connected to the abutting section (42) and extends in a direction away from the iron core (21) and toward one side of the base (10), and the extending portion (432) extends in the direction of the iron core (21) and is used to abut against the armature (23) so as to limit the armature (23).

6. The small relay (100) according to claim 5, characterized in that: The limiting section (43) also includes a limiting portion (433), which is connected to an end of the extension portion (432) away from the first connecting portion (431) and extends in the direction of the push rod (24) to abut against the armature (23), wherein the limiting portion (433) and the first connecting portion (431) are arranged in parallel.

7. The small relay (100) according to claim 6, characterized in that: The armature (23) is provided with a notch (231), and when the armature (23) is in the separated state, the limiting portion (433) is clamped in the notch (231).

8. The small relay (100) according to any one of claims 2 to 4 or 6 or 7, characterized in that: The abutting section (42) comprises a second connecting portion (421) and an abutting portion (422), wherein the second connecting portion (421) is connected to the mounting section (41), and the abutting portion (422) is arranged at an end of the second connecting portion (421) away from the mounting section (41), and is used for abutting against the armature (23) in a separated state, wherein the abutting portion (422) and the second connecting portion (421) are arranged at an angle, and the angle is greater than 90°.

9. The small relay (100) according to claim 8, characterized in that: The abutting section (42) comprises two abutting portions (422), and the two abutting portions (422) are separately arranged on the second connecting portion (421) along a direction perpendicular to the movement direction of the armature (23).

10. The small relay (100) according to any one of claims 2 to 4 or 6 or 7, characterized in that: The installation section (41), the abutting section (42) and the limiting section (43) are integrally arranged.

Images