Electromagnetic relay with button mechanism

Abstract

The utility model discloses an electromagnetic relay with a button mechanism. The electromagnetic relay comprises a shell, the button mechanism, a contact part and a magnetic circuit part, the shell is provided with a mounting groove, the button mechanism comprises a button and a hasp, two convex columns located on the same axis are arranged on the outer side of the hasp, and the hasp is rotationally connected into the mounting groove through the two convex columns and matched with the button, so that the button is pushed when the hasp is pulled; the button can at least partially extend into the shell to movably abut against the armature of the magnetic circuit part so as to connect or disconnect the contact part; mounting structures and limiting structures are arranged on the inner side face of the mounting groove and correspond to the convex columns, the mounting structures and the limiting structures are staggered in the depth direction of the mounting groove, and the convex columns slide to the limiting structures along the mounting structures and are stopped and limited by the limiting structures. When the hasp is assembled, plastic scraps cannot be generated, the convex column can be prevented from loosening, and the risk that the contact of a product is not conducted is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field, especially a kind of electromagnetic relay with button mechanism. BACKGROUND

[0002] Electromagnetic relay is a kind of electronic control device, it is usually applied in automatic control circuit, it is actually used smaller current to control larger current a kind of " automatic switch ", so it plays the role of automatic regulation, safety protection, conversion circuit in circuit.

[0003] The electromagnetic relay of prior art has button mechanism, for debugging personnel to detect whether the switch of relay load end circuit is normal.Specifically, button mechanism includes hasp and button, hasp is reversibly connected in the installation slot of relay shell setting, and cooperate with button, so that hasp is pulled when along the depth direction of installation slot and pushes button inward, so that button promotes armature of magnetic circuit part to act, so that armature and iron core attract, realize contact part to close or open;When hasp releases button, button resets, armature resets, so that contact part is disconnected or closed.Above-mentioned hasp specifically uses two convex columns as pivot, and the interference fit of two shaft holes of installation slot is set up.This way usually produces plastic chippings when assembling, there is the risk of product contact point not conducting. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of electromagnetic relay with button mechanism in view of the technical problems existing in prior art.

[0005] The utility model solves the technical scheme that technical problem it adopts is: a kind of electromagnetic relay with button mechanism, including shell, button mechanism, and contact part and magnetic circuit part in shell;Shell is equipped with installation slot, button mechanism includes button and hasp, hasp outside is equipped with two convex columns on the same axis, hasp is rotationally connected in the installation slot by the two convex columns, and cooperate with button, to make the hasp be pulled when along the depth direction of installation slot and push button inward;The button can be at least partially extended and placed into shell and the armature of magnetic circuit part active top resistance, to connect or disconnect contact part;The inner side of the installation slot is equipped with installation structure and limiting structure corresponding to each convex column, the installation structure and limiting structure are mutually staggered in the depth direction of the installation slot, the convex column is slid along the installation structure to limiting structure, and is stopped by limiting structure.

[0006] Further, the limiting structure includes limiting slot, the limiting slot is half-slot structure with opening towards the bottom wall of the installation slot;The inner wall surface of the limiting slot is circular arc, to adapt the convex column.

[0007] Further, the mounting structure comprises an entrance portion and a guide portion, the guide portion is located between the entrance portion and the limiting structure, the convex column enters the mounting slot from the entrance portion and slides along the guide portion to the limiting structure.

[0008] Further, a guide surface is arranged on the side of the guide portion facing the bottom wall of the mounting slot, a first end of the guide surface supports the entrance portion, and a second end of the guide surface supports the limiting structure; the guide surface comprises an outward convex arc surface and / or a straight surface.

[0009] Further, the button comprises a button body and a driving portion arranged on the button body, the driving portion penetrates the bottom wall of the mounting slot and can be extended into the shell to abut against the armature; the buckle is arranged outside the button body, and a supporting plate is arranged at the bottom of the button body to support the buckle and abut against the buckle.

[0010] Further, the button body is integrally formed with an elastic portion, a bottom end of the elastic portion abuts against the bottom wall of the mounting slot to provide the button with reset.

[0011] Further, the elastic portion comprises a plurality of inclined ribs, the plurality of inclined ribs are arranged on the outer periphery of the driving portion, a top end of each inclined rib is integrally formed with the button body, and a bottom end of each inclined rib abuts against the bottom wall of the mounting slot.

[0012] Further, the driving portion is a buffer rod capable of elastically deforming, the buffer rod is in a C shape, or a long strip-shaped through hole is arranged in the middle of the buffer rod and extends along the length direction of the buffer rod, and a buffer notch is arranged on one side of the buffer rod and communicates with the through hole.

[0013] Further, a convex portion is arranged at the bottom end of the driving portion and used for pushing the armature, the convex portion has an outward convex hemispherical surface or circular arc surface.

[0014] Further, the shell comprises an upper shell and a lower shell, the upper shell is connected to the top of the lower shell, the upper shell is provided with the mounting slot, and the magnetic circuit portion and the contact portion are arranged in the lower shell; the top of the lower shell is further provided with a supporting portion, the supporting portion supports the bottom wall of the mounting slot; a plurality of reinforcing ribs are arranged on the outer periphery of the mounting slot to enhance the strength of the bottom wall of the mounting slot; the plurality of reinforcing ribs are divided into two groups and are arranged on two opposite sides of the outer periphery of the mounting slot.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The inner side of the installation groove is provided with an installation structure and a limiting structure corresponding to each protruding column, the installation structure and the limiting structure are staggered in the depth direction of the installation groove, the protruding column slides to the limiting structure along the installation structure, and is stopped and limited by the limiting structure, therefore, the installation structure and the limiting structure of the utility model replace the interference fit mode of the shaft hole and the protruding column, on the one hand, plastic chips are not generated during assembly, thereby greatly reducing the risk of product contact non-conduction, on the other hand, the utility model can effectively prevent the protruding column from loosening, and ensure the stability of the overall structure. In addition, the installation structure of the utility model also makes the utility model convenient for realizing automatic assembly.

[0017] 2. The button body is integrally formed with the elastic part, so that the utility model does not need to additionally set a compression spring to provide button reset, thereby not only reducing the number of parts and the material cost, but also enabling the utility model to save the step of automatic feeding of the compression spring when automatic assembly is adopted, thereby being more convenient for realizing automatic assembly.

[0018] 3. The driving part is a buffer rod capable of elastically deforming, which can buffer the pressure generated by the armature resisting and extruding, prevent the button from being broken and damaged, and ensure that the armature and the core of the magnetic circuit part are in reliable contact when the button is pressed, thereby ensuring the accuracy of the debugging result.

[0019] 4. The driving part is provided with a convex part for pushing the armature, the convex part has an outward convex hemispherical surface or circular arc surface, so that the contact area of the driving part and the armature is very small, thereby reducing the contact friction force between the two, reducing the wear of the button, reducing the generation of plastic chips, and also ensuring the consistency of the contact position of the button and the armature.

[0020] The utility model will be further described in detail in combination with the drawings and examples; but the electromagnetic relay with a button mechanism of the utility model is not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 is a top view of the utility model;

[0023] Figure 3 is Figure 2 A-A sectional view of the utility model;

[0024] Figure 4 is Figure 2 B-B sectional view of the utility model;

[0025] Figure 5 is Figure 4 the enlarged schematic diagram of D part in the utility model;

[0026] Figure 6 is the three-dimensional structure schematic view of the upper shell of the utility model Figure 1 ;

[0027] Figure 7 is the three-dimensional structure schematic view of the upper shell of the utility model Figure 2 ;

[0028] Figure 8 is the plan view of the upper shell of the utility model

[0029] Figure 9 is Figure 8 E-E section view of

[0030] Figure 10 is the three-dimensional structure schematic view of the button of the utility model

[0031] Figure 11 is the first view of the button of the utility model

[0032] Figure 12 is the second view of the button of the utility model

[0033] Figure 13 is the three-dimensional structure schematic view of the lower shell of the utility model

[0034] Figure 14 is Figure 2 C-C section view of

[0035] Figure 15 is Figure 14 the enlarged schematic view of F part in

[0036] In the figure, 1, upper shell, 11, installation groove, 111, bottom wall, 112, let hole, 113, entrance part, 114, guide part, 1141, guide surface, 115, limiting groove, 116, reinforcing rib, 2, lower shell, 21, support part, 3, button, 31, button main body, 32, bearing plate, 33, inclined rib, 34, buffer rod, 341, through hole, 342, buffer gap, 35, convex part, 4, buckle, 41, convex column, 5, magnetic circuit part, 51, armature, 52, iron core, 6, base, 7, push card, 8, recovery reed, 9, dynamic spring part, 10, static spring part. DETAILED DESCRIPTION

[0037] In the description of the utility model, the orientation or position relation indicated by "upper", "lower", "inner", "outer", "top / bottom end" and the like is based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model, and does not indicate or imply that the device must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the protection scope of the utility model. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] In addition, in the description of the utility model, "a plurality of" means two or more, unless otherwise specified. In the description of the utility model, unless otherwise specified and limited, the terms "arrangement", "sleeve arrangement", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements, and for ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0039] Please refer to Figures 1-15 The utility model discloses a button's electromagnetic relay, including casing, button mechanism and the contact part and magnetic circuit part 5 in the casing, the casing is equipped with the installation groove 11, the button mechanism includes button 3 and hasp 4, the hasp 4 outside is equipped with two convex posts 41 on the same axis, the hasp 4 is connected in the installation groove 11 through the two convex posts 41 and is cooperated with button 3, to make the hasp 4 be when being outwardly pulled and push button 3 inwards along the depth direction of installation groove 11. Button 3 can be at least partially extended and placed into the casing and the armature 51 of magnetic circuit part 5 movable abutment, to connect or disconnect the contact part. The casing specifically includes upper shell 1 and lower shell 2, upper shell 1 is connected at the top of lower shell 2, and upper shell 1 is equipped with the installation groove 11, and the magnetic circuit part 5 and the contact part are arranged in the lower shell 2.

[0040] As Figure 6 , Figure 8 , Figure 9As shown, the inner side of the mounting slot 11 is provided with a mounting structure and a limiting structure corresponding to each protruding column 41, the mounting structure and the limiting structure are staggered in the depth direction of the mounting slot 11, the protruding column 41 slides along the mounting structure to the limiting structure, and is stopped and limited by the limiting structure. Specifically, the limiting structure includes a limiting slot 115, but is not limited thereto. The mounting structure includes an upper and lower through entrance portion 113, a guide portion 114 located between the entrance portion 113 and the limiting structure (i.e. the limiting slot 114), the protruding column 41 enters the mounting slot 11 from the entrance portion 113, and reaches the limiting slot 115 along the guide portion 114, so that the limiting slot 115 limits the protruding column 41 from exiting the mounting slot 11.

[0041] As shown in Figure 6 , Figure 9 , the limiting slot 115 is a half-slot structure with an opening facing the bottom wall 111 of the mounting slot 11, and the inner wall surface of the limiting slot 115 is in a circular arc shape to adapt to the protruding column 41 (the protruding column 41 is in a cylindrical structure). The side of the guide portion 114 facing the bottom wall 111 of the mounting slot is provided with a guide surface 1141, the first end of the guide surface 1141 receives the entrance portion 113, and the second end of the guide surface 1141 receives the limiting structure (i.e. the limiting slot 115). The guide surface 1141 includes an outward convex arc surface and / or a straight surface. Specifically, in this embodiment, the guide surface 1141 includes an outward convex arc surface and a straight surface, but is not limited thereto, one end of the arc surface constitutes the first end of the guide surface 1141, one end of the arc surface is higher than the other end, and the other end of the arc surface receives one end of the straight surface, and the other end of the straight surface constitutes the second end of the guide surface 1141. In other embodiments, the guide surface only includes an outward convex arc surface, and the two ends of the arc surface receive the entrance portion 113 and the limiting slot 115, respectively. When the buckle 4 is mounted, the two protruding columns 41 of the buckle enter the corresponding entrance portions 113, respectively, and are smoothly and automatically guided into the limiting slot 115 along the guide surface 1141 of the guide portion 114, and are limited in the limiting slot 115. During the entire assembly process, no plastic is generated between the protruding column 41 and the mounting slot 11, and the protruding column 41 cannot slip out of the limiting slot 115.

[0042] As shown in Figures 10-12 , the button 3 includes a button body 31 and a driving portion provided on the button body 31, the driving portion can be extended into the lower shell 2 and abut against the armature 51 of the magnetic circuit portion 5 to connect or disconnect the contact portion. The button body 31 is integrally formed with a resilient portion, the resilient portion abuts between the button body 31 and the inner surface of the mounting slot 11 to provide a reset for the button 3. In other embodiments, the resilient portion is replaced by a compression spring.

[0043] Specifically, the elastic part includes multiple oblique ribs 33 located on the outer periphery of the driving part. The top of each oblique rib 33 is integrally formed with the button body 31, and the bottom of each oblique rib 33 abuts against the bottom wall 111 of the mounting groove 11. Specifically, there are two oblique ribs 33 located on opposite sides of the driving part, and the distance between the tops of the two oblique ribs 33 is smaller than the distance between the bottoms of the two oblique ribs 33, that is, the two oblique ribs 33 are approximately V-shaped.

[0044] In this embodiment, the driving part is a buffer rod 34 that can elastically deform. Figures 10-12 As shown, the buffer rod 34 has an elongated through hole 341 extending along its length in the middle, and a buffer notch 342 communicating with the through hole 341 on one side. This allows the buffer rod 34 to deform to a certain extent when it contacts the armature 51, thereby relieving the pressure on the buffer rod 34, reducing the risk of breakage, and extending the service life of the button 3. Furthermore, the deformation of the buffer rod 34 also indirectly ensures reliable contact between the buffer rod 34 and the armature 51, guaranteeing that the circuit continuity detection function of this invention meets the requirements.

[0045] like Figures 10-12 As shown, the bottom end of the drive unit (i.e., the buffer rod 34) is provided with a protrusion 35 for pushing the armature 51. The surface of the protrusion 35 has an outwardly convex hemispherical surface, so that when the buffer rod 34 contacts the armature 51, it is a point-to-surface contact with a very small contact area, thereby reducing the contact friction between the two, reducing the wear of the button 3, reducing the generation of plastic debris, and also ensuring the consistency of the contact position between the button 3 and the armature 51. In other embodiments, the hemispherical surface can be replaced by an arc surface, so that when the buffer rod 34 contacts the armature 51, it is a line-to-surface contact with a small contact area.

[0046] like Figures 6-9 As shown, a clearance hole 112 is provided in the middle of the mounting groove 11, through which the driving part passes. Multiple reinforcing ribs 116 are provided on the outer periphery of the mounting groove 11 to strengthen the bottom wall 111 of the mounting groove 11. Specifically, the multiple reinforcing ribs are divided into two groups and located on opposite sides of the outer periphery of the mounting groove 11. Multiple support parts 21 are also provided on the top of the lower shell 2, which support the bottom wall 111 of the mounting groove 11. The reinforcement ribs 116 and the support parts 21 both contribute to further improving the strength of the bottom wall 111 of the mounting groove 11.

[0047] In this embodiment, the buckle 4 is U-shaped and is sleeved on the outside of the button body 31. The bottom of the button body 31 is provided with a support plate 32 that supports the buckle 4 and abuts against the buckle 4.

[0048] This utility model also includes a base 6, the magnetic circuit part 5 and the contact part are mounted on the base 6, and the bottom end of the lower shell 2 is connected to the base 6.

[0049] The utility model discloses a electromagnetic relay with button mechanism, when the hasp 4 is pulled up, the hasp 4 rotates with two convex posts 41 as fulcrum, make the bearing plate of button 3 be resisted and be pressed down movement by the hasp 4, and the inclined rib 33 is compressed and the elastic deformation occurs, and the convex part 35 of the bottom end of buffer rod 34 contacts and pushes armature 51, makes armature 51 rotate, and one end of armature 51 contacts the core of magnetic circuit part 5, and the other end drives the moving spring part 9 of contact part through the push card 7, makes the moving spring part 9 and the static spring part 10 of contact part close. When the hasp 4 resets, the hasp 4 releases button 3, and button 3 resets upwards under the action of the restoring force of the inclined rib 33, and the convex part 35 of the bottom end of buffer rod 34 is separated from armature 51, and armature 51 resets under the action of the restoring spring 8, and finally the moving spring part 9 and the static spring part 10 of contact part are disconnected.

[0050] The utility model discloses a electromagnetic relay with button mechanism, and the button 3 of the utility model discloses a self-resetting function, make the utility model discloses a need not to set up compression spring to provide button 3 reset, thereby not only reduces the number of parts, reduces the material cost, still make the utility model discloses the automatic assembly of adoption can save the step of the automatic feeding of compression spring, thereby more convenient to realize automatic assembly. The utility model discloses the mounting structure and the limiting structure replace the interference fit mode of shaft hole and convex post, one aspect will not produce plastic chippings when assembling, thereby greatly reduce the risk of product contact not conducting, on the other hand can effectively prevent the convex post from loosening, ensure the stability of the whole work, and will not affect the realization of automatic assembly of the utility model.

[0051] The utility model discloses a electromagnetic relay with button mechanism, and the specific structure and working principle of the part (for example the magnetic circuit part, the contact part etc.) are same with prior art or can adopt prior art to realize.

[0052] The above embodiment is only used to further illustrate the utility model discloses a electromagnetic relay with button mechanism, but the utility model discloses a is not limited to the embodiment, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model discloses a fall into the protection scope of the utility model technical scheme.

Claims

1. An electromagnetic relay with a button mechanism, comprising a housing, a button mechanism, and a contact portion and a magnetic circuit portion located in the housing; the housing is provided with a mounting groove, the button mechanism comprises a button and a buckle, the buckle is provided with two convex posts on the same axis on the outside, the buckle is rotatably connected in the mounting groove through the two convex posts, and cooperates with the button to push the button inward along the depth direction of the mounting groove when the buckle is pulled; the button can be at least partially extended into the housing to movably abut against an armature of the magnetic circuit portion to connect or disconnect the contact portion; characterized in that: The inner side of the mounting groove is provided with a mounting structure and a limiting structure corresponding to each protruding column, the mounting structure and the limiting structure are staggered in the depth direction of the mounting groove, the protruding column slides along the mounting structure to the limiting structure and is stopped by the limiting structure.

2. The electromagnetic relay with button mechanism according to claim 1, characterized in that: The limiting structure comprises a limiting groove in the form of a half-groove structure with an opening facing the bottom wall of the mounting groove; the inner wall surface of the limiting groove is in the form of a circular arc to adapt to the protruding column.

3. The electromagnetic relay with button mechanism according to claim 1 or 2, characterized in that: The mounting structure comprises an entrance portion and a guide portion, the guide portion is located between the entrance portion and the limiting structure, the protruding column enters the mounting groove from the entrance portion and slides along the guide portion to the limiting structure.

4. The electromagnetic relay with button mechanism according to claim 3, characterized in that: The guide surface is provided on the side of the guide portion facing the bottom wall of the mounting groove, the first end of the guide surface receives the entrance portion, and the second end of the guide surface receives the limiting structure; the guide surface comprises an outward convex arc surface and / or a straight surface.

5. The electromagnetic relay with button mechanism according to claim 1, characterized in that: The button comprises a button body and a driving portion provided on the button body, the driving portion passes through the bottom wall of the mounting groove and can be extended into the housing to abut against the armature; the buckle is sleeved outside the button body, and a supporting plate is provided at the bottom of the button body to support the buckle and abut against the buckle.

6. The electromagnetic relay with button mechanism according to claim 5, characterized in that: The button body is integrally formed with a resilient portion, the bottom end of the resilient portion abuts against the bottom wall of the mounting groove to provide a reset function for the button.

7. The electromagnetic relay with button mechanism according to claim 6, characterized in that: The resilient portion comprises a plurality of inclined ribs, the plurality of inclined ribs are located at the outer periphery of the driving portion, the top end of each inclined rib is integrally formed with the button body, and the bottom end of each inclined rib abuts against the bottom wall of the mounting groove.

8. The electromagnetic relay with button mechanism according to claim 7, characterized in that: The driving portion is a buffer rod capable of elastically deforming, the buffer rod is in the form of a C letter, or a long strip-shaped through hole is provided in the middle of the buffer rod and extends along the length direction of the buffer rod, a buffer notch is provided on one side of the buffer rod and communicates with the through hole, the number of the inclined ribs is two, the two inclined ribs are located on opposite sides of the driving portion, and the distance between the top ends of the two inclined ribs is smaller than the distance between the bottom ends of the two inclined ribs.

9. The electromagnetic relay with button mechanism according to any one of claims 5-8, characterized in that: The bottom end of the driving portion is provided with a protruding portion for pushing the armature, the protruding portion has an outward convex hemispherical surface or circular arc surface.

10. The electromagnetic relay with button mechanism according to claim 1, characterized in that: The housing comprises an upper shell and a lower shell, the upper shell is connected to the top of the lower shell, the upper shell is provided with the mounting groove, and the magnetic circuit portion and the contact portion are arranged in the lower shell; the top of the lower shell is further provided with a supporting portion for supporting the bottom wall of the mounting groove; a plurality of reinforcing ribs are provided on the outer periphery of the mounting groove to strengthen the strength of the bottom wall of the mounting groove; the plurality of reinforcing ribs are divided into two groups and are located on opposite sides of the outer periphery of the mounting groove.

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