A small relay

Abstract

The utility model discloses a small -size relay, include: armature, moving spring piece, skeleton, yoke, iron core, coil, static contact, wherein moving spring piece is directly fixed to the armature, and the skeleton has the boss on both sides above the armature, and the limiting of armature is passed to the boss, realizes the indirect spacing of moving spring piece rebound, and will limit position change to the position of moving spring piece swing line speed smaller, weakens the impact force when limiting abuts, reduces moving spring piece rebound frequency, improves the spacing effect. Can dispense with such relay's false B foot, reduce material cost, simplify production process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of relay manufacturing, specifically to small relay. BACKGROUND

[0002] The existing small relay usually directly fixes the moving spring sheet on the armature, sets the moving contact on the moving spring sheet, uses the moving spring sheet to realize the conduction and drive the armature to reset, then sets the false B foot on the framework, and the false B foot abuts against the back of the moving contact at the end of the moving spring sheet to limit the rebound of the moving spring sheet, the defect of this structure is that the false B foot is suspended above the moving contact, that is, the position where the swing line speed of the moving spring sheet is maximum, the impact force is maximum at the instant of limiting abutment, which not only increases the rebound times, but also increases the probability of damage of the moving contact. SUMMARY

[0003] In order to overcome at least one defect of the prior art, the utility model provides a small relay, which can improve the limiting effect of the moving spring sheet and reduce the production cost.

[0004] The small relay comprises an armature, a moving spring sheet, a framework, a yoke, an iron core, a coil, and a static contact, wherein the iron core is arranged in the framework, the coil is arranged outside the iron core, one end of the yoke is fixedly connected with one end of the iron core, one end of the armature is rotatably connected with the other end of the yoke, and the other end of the armature is used for attracting the other end of the iron core; The moving spring sheet comprises a fixed part fixedly connected with the yoke, a movable part fixedly connected with the armature, and an elastic bending part connecting the fixed part and the movable part, and the movable part is further provided with a moving contact, and the static contact is arranged in the framework and corresponds to the position of the moving contact. The framework is provided with a boss, and when the elastic bending part of the moving spring sheet drives the armature to reset, the boss abuts against the armature to limit the moving spring sheet.

[0005] As an optional embodiment, the movable part comprises a main sheet body, a spring sheet body extended from the main sheet body, and a moving contact arranged at the end of the movable part, the main sheet body is fixedly connected with the armature, and the free end of the spring sheet body protrudes from the free end of the armature.

[0006] As an optional embodiment, the number of bosses is two, and the two bosses are symmetrically suspended above the armature.

[0007] As an optional embodiment, the spring sheet body is arranged between the two bosses, the width of the spring sheet body is less than the gap between the two bosses, and the gap between the two bosses is less than the width of the armature.

[0008] As an optional embodiment, the connection mode of the movable part and the armature can be riveting.

[0009] As an optional implementation, the fixed part and the yoke can be connected by clamping.

[0010] The utility model discloses cancel the false B foot of small relay, adopt the mode of setting the boss on the framework, and the limit of armature is based on the feature that the movable spring piece of such small relay is fixed to the armature, can realize the indirect limit of boss to movable spring piece. Compared with false B foot, the position of boss is closer to the pivot of armature swing, namely the boss is at the position of movable spring piece swing line speed smaller, and the impact force of limit abutment instant is small, thereby effectively reducing the bounce times of movable spring piece. Therefore, the utility model not only improves the limit effect of movable spring piece of such small relay, and cancels false B foot this additional component, saves the material cost, and simplifies the production process. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0012] Figure 1 It is small relay structural view.

[0013] Figure 2 It is armature, framework, movable spring piece three cooperation and partial enlarged view.

[0014] Figure 3 It is small relay plan view.

[0015] Figure 4 It is small relay embodiment 2 plan view Figure 5 It is small relay embodiment 3 plan view Among them: 1, armature;2, movable spring piece;21, fixed part;22, elastic bending part;23, movable part;231, main piece body;232, spring piece body;233, movable contact;3, framework;31, baffle;32, boss;4, yoke;5, iron core;6, coil;7, static contact. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0017] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0018] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms may also be used to indicate other meanings, for example, the term "upper" may also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0019] In addition, the terms "mounting", "setting", "providing", "connecting", "connecting" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0020] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0021] The technical solutions of the present application will be further described below in conjunction with the embodiments and the drawings.

[0022] Embodiment 1 Referring to Figures 1 to 3 The small relay of the present embodiment comprises: an armature 1, a moving contact 2, a frame 3, a yoke 4, an iron core 5, a coil 6, a static contact 7; The iron core 5 is arranged in the frame 3, the coil 6 is arranged outside the iron core 5, one end of the yoke 4 is fixedly connected with one end of the iron core 5, one end of the armature 1 is rotatably connected with the other end of the yoke 4, and the other end of the armature 1 is used for attracting the other end of the iron core 5; The moving spring sheet 2 comprises a fixed portion 21, an elastic bending portion 22 and a movable portion 23, wherein the fixed portion 21 is fixedly connected to the yoke 4, the elastic bending portion 22 is connected between the fixed portion 21 and the movable portion 23, the root of the movable portion 23 is fixedly connected to the armature 1, and the end of the movable portion 23 is provided with a moving contact 233, and the stationary contact 7 is arranged on the frame 3 and is in position correspondence with the moving contact 233. The frame 3 is provided with a boss 32, and when the elastic bending portion 22 of the moving spring sheet 2 drives the armature 1 to reset, the boss 32 abuts against the armature 1, so as to limit the moving spring sheet 2. Referring to Figure 1 and Figure 2 , the movable portion 23 of the moving spring sheet 2 is directly fixedly connected to the armature 1, at this time, the moving spring sheet 2 is bound to move with the armature 1, the elastic sheet body 232 is equivalent to an extension of the armature 1, the armature 1 drives the moving spring sheet 2 to swing during the attraction stage, and when the attraction of the armature 1 is completed, the moving contact 233 at the end of the moving spring sheet 2 is also synchronously attracted to the stationary contact 7.

[0023] Referring to Figure 1 and Figure 3 , the boss 32 is symmetrically suspended above the two sides of the elastic sheet body 232, the gap between the two bosses 32 is greater than the width of the elastic sheet body 232 and less than the width of the armature 1. Such a setting mode makes the boss 32 limit the armature 1 when the armature 1 resets, and indirectly limits the rebound of the moving spring sheet 2. The two bosses 32 are symmetrically arranged, which ensures that the forces on both sides of the armature 1 are balanced in the limiting abutting state, and avoids the torsion caused by uneven force. The two bosses 32 are arranged between the main sheet body 231 of the movable portion 23 and the moving contact 233, and the corresponding change is to change the limiting position from the position with the maximum linear velocity of the moving spring sheet 2 to the position with the relatively smaller linear velocity, to reduce the impact force in the limiting abutting moment, to reduce the rebound times of the moving spring sheet, and to optimize the limiting effect. When the moving spring sheet 2 is assembled, the gap between the two bosses 32 can ensure that the elastic sheet body 232 passes through smoothly and is correctly installed. Therefore, the gap between the two bosses 32 is between the width of the armature 1 and the width of the elastic sheet body 232, which can ensure the limiting effect of the relay and reserve enough space for the assembly of the relay. The fixed portion 21 of the moving spring sheet 2 is preferably tightly attached to the surface of the yoke 4 in a clamping manner, and has two positioning columns to avoid displacement between the fixed portion 21 and the yoke 4; the movable portion 23 of the moving spring sheet 2 is preferably fixedly connected to the armature 1 in a riveting manner, to avoid loosening between the movable portion 23 and the armature 1 and to affect the normal operation of the relay.

[0024] It can be understood that, according to actual conditions, the connection mode between the moving spring sheet 2 and the armature 1 and the connection mode between the moving spring sheet 2 and the yoke 4 can all adopt other fixed connection modes, as long as the connection is stable and firm.

[0025] Embodiment 2 Referring to Figure 4 The difference between the embodiment and embodiment 1 is that the limiting abutting object of the boss 32 is changed, that is, the boss 32 only abuts against the armature 1 in embodiment 1 is changed to the boss 32 abutting against the armature 1 and the main blade body 231 of the moving reed 2 at the same time.

[0026] In the embodiment, the limiting position of the moving reed 2 is also changed from the end of the moving reed 2 with the maximum swing linear velocity to a position with smaller swing linear velocity, so that the number of rebounding of the moving reed 2 is reduced, and the limiting effect is improved.

[0027] Embodiment 3 Referring to Figure 5 The difference between the embodiment and embodiment 1, embodiment 2 is that the limiting abutting object of the boss 32 is changed, that is, the boss 32 only abutting against the armature 1 in embodiment 1 and the armature 1 and the main blade body 231 in embodiment 2 is changed to the boss 32 only abutting against the main blade body 231 of the moving reed 2.

[0028] In the embodiment, the limiting position of the moving reed 2 is also changed from the end of the moving reed 2 with the maximum swing linear velocity to a position with smaller swing linear velocity, so that the number of rebounding of the moving reed 2 is reduced, and the limiting effect is improved.

[0029] From the perspective of relay application, the moving reed 2 is fixedly connected to the armature 1 and becomes an extension of the armature 1, so that the limiting of the boss 32 to the moving reed 2 can be changed to the limiting of the armature 1 and / or the main blade body 231, and therefore the limiting position can avoid the end of the moving reed 2 with the maximum linear velocity and the maximum impact force, so that the number of rebounding of the moving reed 2 is reduced, and the limiting effect of the moving reed 2 is improved.

[0030] From the perspective of relay production, compared with the traditional structure, the two components of the false B angle are omitted, on the one hand, the material cost is saved, and on the other hand, the assembly process is simplified, which has obvious positive effect on relay production.

[0031] The technical means disclosed in the scheme of the utility model is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A small relay, characterized in that, include: Armature, moving spring, frame, yoke, iron core, coil, stationary contact; The iron core is passed through the frame, the coil is wound around the frame and located outside the iron core, one end of the yoke is fixedly connected to one end of the iron core, one end of the armature is rotatably connected relative to the other end of the yoke, and the other end of the armature is used to attract the other end of the iron core; The movable spring includes a fixed part, an elastically bent part, and a movable part. The fixed part is fixed to the yoke, the elastically bent part is connected between the fixed part and the movable part, the root of the movable part is fixed to the armature, and the end of the movable part is also provided with a movable contact. The stationary contact is provided on the frame and corresponds to the position of the movable contact. The frame is provided with a boss. When the elastic bending portion of the movable spring drives the armature to reset, the boss abuts against the root of the armature and / or the movable part, thereby limiting the movable spring.

2. The miniature relay according to claim 1, characterized in that, The movable part includes a main plate, a spring plate extending from the main plate, and a movable contact at the end of the movable part. The main plate is fixed to the armature, and the free end of the spring plate protrudes from the free end of the armature.

3. The miniature relay according to claim 2, characterized in that, The number of protrusions is two, and they are symmetrically suspended on both sides above the armature and / or the main body.

4. The miniature relay according to claim 3, characterized in that, The spring sheet is disposed between the two protrusions, and the width of the spring sheet is smaller than the gap between the two protrusions.

5. The miniature relay according to any one of claims 2 to 4, characterized in that, Along the length of the spring body, the boss is located between the main body and the moving contact.

6. The miniature relay according to claim 1, characterized in that, The movable part is connected to the armature by riveting.

7. The miniature relay according to claim 1, characterized in that, The connection between the fixed part and the yoke is a snap-fit ​​connection.

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