Lead-out pin fixing structure and electromagnetic relay

Abstract

The utility model discloses a lead-out pin fixing structure and an electromagnetic relay, the lead-out pin fixing structure comprises a fixing main body and a lead-out pin, the fixing main body is provided with a jack, and the lead-out pin is inserted in the jack; the insertion hole comprises a thin hole section and a thick hole section which are distributed in the axial direction of the insertion hole, and the cross section area of the thin hole section is smaller than that of the thick hole section. And the thick hole section is filled with a glue solution, the glue solution peripherally wraps the lead-out pin, and the glue solution does not enter the thin hole section, or the glue solution enters and stays in the thin hole section. According to the utility model, the shaking amount of the lead-out pins in the jacks can be reduced by using the thin hole sections, and a large gap formed between the thick hole sections and the lead-out pins can be filled with a large amount of glue, so that the wrapping thickness of the glue on the lead-out pins is improved, and after the lead-out pins are stressed, a glue layer formed by curing the glue is not easy to crack and fall off, and the service life of the lead-out pins is prolonged. The firmness and stability of the lead-out pins and the sealing performance of the product are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field, in particular to a lead -out foot fixing structure and electromagnetic relay. BACKGROUND

[0002] The base of the electromagnetic relay of prior art usually reserves a certain number of insertion holes in the production process for inserting and assembling the moving spring lead -out foot, the static spring lead -out foot and the coil lead -out foot. After each lead -out foot is inserted and assembled in the corresponding insertion hole, the base is point -glued and plastic -sealed at the insertion hole. In order to reduce the shaking of the lead -out foot, the insertion hole is usually made thin to reduce the activity space of the lead -out foot in the insertion hole, but this can make the glue filling space between the lead -out foot and the insertion hole smaller, resulting in less glue filling amount, even insufficient, plus the depth of the insertion hole is usually shallow, so that the glue liquid can only form a thin layer of glue layer after solidification, and the wrapping thickness of the lead -out foot is small, even insufficient. In the subsequent transportation and use process, once the lead -out foot is stressed or stressed greatly, the glue layer is easy to crack, even fall off, thereby reducing the fixing degree of the lead -out foot and affecting the sealing performance of the relay. At the same time, the glue should also be avoided from leaking into the cavity during the glue filling process to prevent affecting the product performance. SUMMARY

[0003] The utility model provides a lead -out foot fixing structure and electromagnetic relay for the technical problems existing in prior art, and through the structure improvement, the lead -out foot fixing structure and electromagnetic relay can reduce the shaking of the lead -out foot, improve the glue filling amount, and facilitate batch production.

[0004] The utility model discloses a technical scheme that is adopted to solve the technical problems: a lead -out foot fixing structure, including fixed main part and lead -out foot, fixed main part is equipped with insertion hole, and the lead -out foot is inserted and assembled in the insertion hole, the insertion hole includes thin hole section and thick hole section along the axial direction distribution, the cross section area of thin hole section is less than the cross section area of thick hole section, the thick hole section is filled with glue liquid, and the glue liquid circumferential wrapping lead -out foot, and the glue liquid does not enter the thin hole section, or, the glue liquid enters and stays in the thin hole section.

[0005] Further, the part of the lead -out foot in the thick hole section is provided with a recess and / or a protrusion.

[0006] Further, the recess includes a groove provided on the side surface of the lead -out foot.

[0007] Further, at least one side surface of the lead -out foot is provided with the groove, and the grooves on the same side surface of the lead -out foot are provided as a plurality of grooves, and the plurality of grooves are distributed in parallel at intervals.

[0008] Furthermore, the fixing body is also provided with a dispensing groove corresponding to the insertion hole. The cross-sectional area of ​​the dispensing groove is larger than the cross-sectional area of ​​the coarse hole section. The dispensing groove is located at the end of the coarse hole section away from the fine hole section and is connected to the coarse hole section, so that the adhesive entering the dispensing groove flows into the coarse hole section.

[0009] Furthermore, the fixing body includes a base plate and an extension protrusion corresponding to the insertion hole. The extension protrusion is located on the inner side of the base plate and has a through hole that penetrates the base plate to form the insertion hole.

[0010] Furthermore, the fine-hole segment and the coarse-hole segment are distributed sequentially along the insertion direction of the lead-out pin, and the port of the fine-hole segment away from the coarse-hole segment is flared.

[0011] Furthermore, the depth of the coarse pore section is greater than or equal to the depth of the fine pore section.

[0012] The fixed body is the base of an electromagnetic relay, and there are multiple sockets and leads, with each socket corresponding to a specific lead.

[0013] This utility model also provides an electromagnetic relay, including the lead-out pin fixing structure as described above.

[0014] Furthermore, the fixing body is a base, and the insertion holes and lead-out pins are provided in multiple ways, with each insertion hole corresponding to one of the multiple lead-out pins; the multiple lead-out pins include one or more of the following: moving spring lead-out pins, stationary spring lead-out pins, and coil lead-out pins.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Because the insertion hole of this utility model includes a fine hole segment and a coarse hole segment distributed along the axial direction of the insertion hole, the cross-sectional area of ​​the fine hole segment is smaller than that of the coarse hole segment, and the coarse hole segment is filled with adhesive. The adhesive circumferentially wraps around the lead-out foot, and the adhesive does not enter the fine hole segment, or the adhesive enters and stays in the fine hole segment. This utility model can, on the one hand, reduce the amount of shaking of the lead-out foot in the insertion hole by utilizing the fine hole segment, and on the other hand, fill more adhesive by utilizing the larger gap formed between the coarse hole segment and the lead-out foot, thereby increasing the thickness of the adhesive wrapping around the lead-out foot. This makes the adhesive layer formed by the adhesive curing after the lead-out foot is subjected to force less prone to cracking and falling off, thereby improving the firmness and stability of the lead-out foot and the sealing performance of the product. Furthermore, the adhesive can automatically enter and remain in the narrow orifice under the action of capillary action. On the one hand, this increases the contact area between the lead and the adhesive, thereby further improving the bonding force between the adhesive and the lead. On the other hand, it allows the adhesive to gradually stop flowing out of the narrow orifice, avoiding unnecessary pollution, waste, or even affecting the working performance of the product, and it is also convenient for mass production.

[0017] 2、As a preferred mode, the part of the lead-out pin located in the rough hole section is provided with a recess and / or a convex part, so that the utility model can increase the contact area of the lead-out pin with the glue solution by using the recess and / or the convex part, thereby improving the bonding force of the glue solution with the lead-out pin. Further, the recess includes a groove provided on the side surface of the lead-out pin, so that the recess is easier to be processed and formed. In addition, the grooves on the same side surface of the lead-out pin are provided in multiple, and each groove is in the form of a strip, so that the contact area of the lead-out pin with the glue solution can be greatly increased in a limited size, thereby further improving the bonding force of the glue solution with the lead-out pin.

[0018] 3、As a preferred mode, the fixed main body is further provided with the glue dispensing groove, so that the utility model can realize convenient glue dispensing by using the glue dispensing groove, and the glue solution can enter the rough hole section along the glue dispensing groove, thereby improving the uniformity of the distribution of the glue solution around the rough hole section.

[0019] 4、The fixed main body includes a bottom plate and an extension convex part corresponding to the insertion hole, the extension convex part is arranged on the inside of the bottom plate, and the extension convex part is provided with a through hole penetrating through the bottom plate to form the insertion hole, so that the utility model can increase the depth of the insertion hole by using the extension convex part, thereby increasing the depth of the fine hole section and / or the rough hole section, and further improving the firmness of the connection between the lead-out pin and the fixed main body. In particular, the extension convex part is located on the inside of the bottom plate instead of the surface side, so that the height of the product can be avoided to be increased by the extension convex part, thereby reducing the occupied space.

[0020] 5、As a preferred mode, the fine hole section and the rough hole section are sequentially distributed along the insertion direction of the lead-out pin, and the port at the end of the fine hole section away from the rough hole section is in the form of a flared port, so that the utility model can guide the lead-out pin when the lead-out pin is inserted into the insertion hole by using the flared port, thereby realizing convenient insertion of the lead-out pin, and in the glue dispensing process, if the glue climbs out of the fine hole section, the glue is forced to stop automatically at the flared port by using the capillary phenomenon, so that the glue is prevented from entering the cavity by the double guarantee of the fine hole section and the flared port, thereby preventing the reed from being adhered.

[0021] 6、The depth of the rough hole section is greater than or equal to the depth of the fine hole section, so that the wrapping length of the glue solution on the lead-out pin in the rough hole section can be improved, thereby improving the bonding force of the glue solution with the lead-out pin.

[0022] The utility model will be further described in detail in combination with the drawings and examples; but the lead-out pin fixing structure and the electromagnetic relay of the utility model are not limited to the examples. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the three-dimensional structure schematic diagram of the electromagnetic relay of the utility model;

[0024] Figure 2is the bottom view of the base of the utility model;

[0025] Figure 3 is Figure 2 the A-A section view of the utility model;

[0026] Figure 4 is Figure 2 the B-B section view of the utility model;

[0027] Figure 5 is Figure 3 the enlarged schematic view of the I part in the utility model;

[0028] Figure 6 is the three-dimensional structure schematic diagram of the static spring part of the utility model Figure 1 ;

[0029] Figure 7 is the three-dimensional structure schematic diagram of the static spring part of the utility model Figure 2 ;

[0030] Figure 8 is Figure 6 the enlarged schematic view of the II in the utility model;

[0031] Figure 9 is the three-dimensional structure schematic diagram of the dynamic spring part of the utility model Figure 1 ;

[0032] Figure 10 is the three-dimensional structure schematic diagram of the dynamic spring part of the utility model Figure 2 ;

[0033] Figure 11 is the bottom view of the electromagnetic relay of the utility model;

[0034] Figure 12 is Figure 11 the C-C section view of the utility model;

[0035] Figure 13 is Figure 12 the enlarged schematic view of the III part in the utility model;

[0036] Figure 14 is Figure 11 the D-D section view of the utility model;

[0037] Figure 15 is Figure 14 the enlarged schematic view of the IV in the utility model;

[0038] Figure 16 is Figure 11 the E-E section view of the utility model;

[0039] Figure 17 is Figure 11 the F-F section view of the utility model;

[0040] In the figure, 1, base; 11, first jack; 111, fine hole section; 112, thick hole section; 113, first gap; 114, second gap; 12, second jack; 13, glue injection groove; 14, bottom plate; 15, extension protrusion; 2, static spring part, 21, static spring lead-out pin; 211, groove; 22, static spring piece; 23, static contact; 3, dynamic spring part; 31, dynamic spring lead-out pin; 32, rigid spring piece; 33, dynamic spring piece; 34, dynamic contact; 4, magnetic circuit part; 41, coil lead-out pin; 42, armature; 43, yoke; 44, coil holder; 5, push card. DETAILED DESCRIPTION

[0041] In the utility model, the terms "first", "second" and the like are only used to distinguish similar objects, and are not used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. In addition, in the description of the utility model, "multiple" refers to two or more, unless otherwise specified. "And / or" describes the relationship between the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0042] Please refer to Figures 1-17 As shown in the figure, the utility model discloses a lead-out pin fixing structure, which comprises a fixed main body and a lead-out pin, the fixed main body is provided with a jack corresponding to the lead-out pin, the lead-out pin is inserted into the jack along the axial direction of the jack, and the cross section of the lead-out pin is square, and the cross section of the jack is also square, but it is not limited to this, in other embodiments, the cross sections of the lead-out pin and the jack are both circular.

[0043] In the embodiment, the fixed main body is the base 1 of the electromagnetic relay, but it is not limited to this. The lead-out pin is roughly columnar, or called rod-shaped, but it is not limited to this, in other embodiments, the lead-out pin is sheet-shaped. The jack and the lead-out pin are respectively provided with multiple ones, and the multiple jacks and the multiple lead-out pins are one-to-one corresponding. The multiple lead-out pins include one or more of the dynamic spring lead-out pin 31, the static spring lead-out pin 21 and the coil lead-out pin 41 of the electromagnetic relay. In addition to the base 1, the electromagnetic relay also includes the magnetic circuit part 4, the dynamic spring part 3 and the static spring part 2, the dynamic spring part 3 is provided with the dynamic spring lead-out pin 31, the static spring part 2 is provided with the static spring lead-out pin 21, and the coil holder 44 of the magnetic circuit part 4 is provided with the coil lead-out pin 41. In order to distinguish, the multiple jacks are respectively named as the first jack 11 for inserting the static spring lead-out pin 21, the second jack 12 for inserting the dynamic spring lead-out pin 31 and the third jack (not shown in the figure) for inserting the coil lead-out pin 41. The lead-out pin fixing structure of the utility model is described in detail below taking the static spring lead-out pin 21 and the first jack 11 as an example.

[0044] The first insertion hole 11 includes a fine hole section 111 and a coarse hole section 112 distributed along its axial direction. Specifically, in this embodiment, the first insertion hole 11 includes a fine hole section 111 and a coarse hole section 112 sequentially distributed along the insertion direction of the stationary spring lead-out foot 21, such as... Figure 5 As shown, but not limited to, in other embodiments, the first insertion hole includes a fine-hole section and a coarse-hole section sequentially distributed in the opposite direction to the insertion direction of the stationary spring lead 21. The cross-sectional area of ​​the fine-hole section 111 is smaller than that of the coarse-hole section 112. The coarse-hole section 112 is filled with adhesive, which circumferentially surrounds the stationary spring lead 21, and the adhesive does not enter the fine-hole section 111, or the adhesive enters and remains in the fine-hole section 111. Specifically, in this embodiment, there is a first gap 113 between the inner wall surface of the fine-hole section 111 and the outer surface surface of the stationary spring lead 21, and a second gap 114 between the inner wall surface of the coarse-hole section 112 and the outer surface surface of the stationary spring lead 21. The first gap 113 is slightly greater than 0, and the second gap 114 is greater than the first gap 113. Therefore, the fine-hole section 111 is roughly matched with the stationary spring lead-out foot 21, which can position the stationary spring lead-out foot 21. At the same time, the adhesive can enter and stay in the fine-hole section 111 under the action of capillary effect.

[0045] As a preferred embodiment, the portion of the spring lead-out foot 21 located within the coarse hole section 112 is provided with a recess and / or a protrusion, thereby increasing the contact area between the spring lead-out foot 21 and the adhesive, and thus improving the bonding force between the adhesive and the spring lead-out foot 21. In this embodiment, a recess is provided in the portion of the spring lead-out foot 21 located within the coarse hole section 112, but this is not a limitation. Specifically, the recess includes a groove 211 provided on the side of the spring lead-out foot 21, but this is not a limitation. In other embodiments, the portion of the spring lead-out foot 21 located within the coarse hole section 112 is formed by bending, or the portion of the spring lead-out foot 21 located within the coarse hole section 112 is formed by providing multiple protrusions spaced apart, utilizing the intervals between adjacent protrusions to form a recess (or groove 211). In this embodiment, at least two sides of the spring lead-out foot 21 are provided with the groove 211; specifically, the spring lead-out foot 21 is provided with the groove 211 on each of its two sides in the thickness direction. In other embodiments, the groove is provided on only one side of the stationary spring lead-out foot. Multiple grooves 211 are provided on the same side of the stationary spring lead-out foot 21, arranged in a spaced-apart parallel pattern. Each groove 211 is elongated and extends in a direction perpendicular to the distribution direction of the multiple grooves 211, but is not limited thereto. Specifically, the multiple grooves 211 are distributed along the length of the stationary spring lead-out foot 21, but are not limited thereto. The grooves 211 are formed on the side of the stationary spring lead-out foot 21 through an embossing process, which simplifies the process and allows for a dense distribution of multiple grooves 211 on the side of the stationary spring lead-out foot 21 within a limited size.

[0046] Further, the base 1 is provided with a dispensing groove 13 on the side (i.e. the side facing downward) of the base 1 where the first insertion hole 11 is located and close to the thick hole section 112, the cross-sectional area of the dispensing groove 13 is greater than that of the thick hole section 112, and the dispensing groove 13 is located at the end of the thick hole section 112 away from the thin hole section 111 and communicates with the thick hole section 112. In this way, when the product is plasticized, the dispensing groove 13 wider than the thick hole section 112 can be used for convenient dispensing, and the glue flows into the thick hole section 112 along the periphery of the dispensing groove 13, so that the glue is evenly distributed around the inside of the first insertion hole 11.

[0047] The base 1 comprises a bottom plate 14 and an extension protrusion 15 corresponding to each insertion hole, the extension protrusion 15 is arranged on the inner side of the bottom plate 14, and the extension protrusion 15 is provided with a through hole penetrating through the bottom plate 14 to form the insertion hole, so that the depth of the insertion hole can be increased by using the extension protrusion 15, thereby increasing the depth of the thin hole section and / or the thick hole section, and further improving the firmness of the connection between the lead-out pin and the base 1.

[0048] In the embodiment, the port at the end of the thin hole section 111 away from the thick hole section 112 is treated by chamfering to be flared, so that the flared port can be used to guide the static spring lead-out pin 21 when the static spring lead-out pin 21 is inserted into the first insertion hole 11, thereby achieving convenient insertion of the static spring lead-out pin 21. In the dispensing process, the capillary phenomenon can be used to quickly fill the thin hole section 111 with glue, and the glue automatically stops at the flared port of the thin hole section 111, thereby increasing the glue filling amount of the first insertion hole 11, further improving the bonding force between the glue and the static spring lead-out pin 21, and facilitating batch production.

[0049] In the embodiment, the depth of the thick hole section 112 is greater than or equal to the depth of the thin hole section 111, which can increase the wrapping length of the lead-out pin in the second gap 114, thereby improving the bonding force between the glue and the lead-out pin.

[0050] The cooperation structure of the second insertion hole 12 and the dynamic spring lead-out pin 31, the cooperation structure of the third insertion hole 13 and the coil lead-out pin 41, and the cooperation structure of the first insertion hole 11 and the static spring lead-out pin 21 are consistent or basically consistent, and will not be described here.

[0051] The utility model discloses a kind of leading-out feet fixing structure, it can utilize pinhole section 111 Reduce the amount of shaking of leading-out feet in jack, and utilize the large gap (i.e. second gap 114) formed between thick hole section 112 and leading-out feet Fill more glue solution, to improve the wrapping thickness of glue solution to leading-out feet, so that leading-out feet is stressed, and the glue layer formed by glue solution solidification is not easy to crack, fall off, to further improve the firm stability of leading-out feet and the sealing performance of product. In particular, the utility model further provides a recess and / or protrusion in the part of leading-out feet located in thick hole section 112, which can increase the contact area of leading-out feet and glue solution by using the recess and / or protrusion, thereby improving the bonding force of glue solution and leading-out feet, and further improving the firm stability of leading-out feet and the sealing performance of product.

[0052] The utility model discloses a kind of electromagnetic relays, including the static spring leading-out feet fixing structure of above-mentioned utility model.

[0053] In the embodiment, the electromagnetic relay of the utility model further includes a magnetic circuit part 4, a moving spring part 3, a static spring part 2, and a push card 5. The static spring part 2 includes a static spring leaf 22, a static contact 23, and a static spring leading-out foot 21. The static contact 23 is riveted to one end of the static spring leaf 22. The static spring leading-out foot 21 is integrally formed on the other end of the static spring leaf 22, as shown in Figure 6 、 Figure 7 The moving spring part 3 includes a moving spring leaf 33, a moving contact 34, a rigid spring leaf 32, and a moving spring leading-out foot 31. The moving contact 34 is riveted to one end of the moving spring leaf 33. The other end of the moving spring leaf 33 is riveted to the rigid spring leaf 32. The moving spring leading-out foot 31 is integrally formed on the rigid spring leaf 32, as shown in Figure 9 、 Figure 10 The static spring part 2 is provided in two. The moving spring part 3 is located between the two static spring parts 2 and alternately cooperates with the two static spring parts 2, so that the electromagnetic relay of the utility model constitutes a conversion type relay. The magnetic circuit part 4 is located on one side of the arrangement direction of the two static spring parts 2 and the moving spring part 3. The magnetic circuit part 4 includes a coil holder 44 with a coil wound thereon, an armature 42, and a U-shaped yoke 43. The coil holder 44 is horizontal. One side of the yoke 43 is inserted into the shaft hole of the coil holder 44. The other side of the yoke 43 is located outside the coil holder 44 and cooperates with the upper side of the coil holder 44. The armature 42 is swingably arranged on the side of the coil holder 44 away from the static spring part 2 in the axial direction of the coil holder 44 and cooperates with the yoke 43. The push card 5 is slidably arranged on the top of the base 1 and is connected with the armature 42 and the moving spring leaf 33.

[0054] For the structure and principle of the leading-out feet fixing structure, please refer to the description part above, which will not be repeated here.

[0055] The utility model discloses a kind of leading-out feet fixing structure and electromagnetic relay, and the part not involved is same with prior art or can be realized by prior art.

[0056] The above embodiments are only used to further illustrate the lead-out pin fixing structure and the electromagnetic relay of the present application, but the present application is not limited to the embodiments, and any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments all fall within the protection scope of the technical scheme of the present application.

Claims

1. A lead-out pin fixing structure comprising a fixing body and a lead-out pin, the fixing body being provided with a socket, and the lead-out pin being inserted into the socket; characterized in that: The insertion hole comprises fine hole sections and coarse hole sections distributed along the axial direction of the insertion hole, the cross-sectional area of the fine hole sections is smaller than that of the coarse hole sections; the coarse hole sections are filled with glue liquid which circumferentially wraps the lead-out pin, and the glue liquid does not enter the fine hole sections, or the glue liquid enters and stays in the fine hole sections.

2. The lead-out pin fixing structure according to claim 1, characterized by: The part of the lead-out pin located in the coarse hole section is provided with a recess and / or a protrusion.

3. The lead-out pin fixing structure according to claim 2, characterized by: The recess comprises a groove provided on the side surface of the lead-out pin.

4. The lead-out pin fixing structure according to claim 3, characterized by: At least one side surface of the lead-out pin is provided with the groove, and the grooves on the same side surface of the lead-out pin are provided in plurality, the plurality of grooves are distributed in parallel at intervals; the groove is in the shape of a long strip.

5. The lead-out pin fixing structure according to claim 3 or 4, characterized by: The groove is formed on the side surface of the lead-out pin by embossing treatment.

6. The lead fixing structure according to claim 1, characterized by: The fixing body is further provided with a glue dispensing groove corresponding to the insertion hole, the cross-sectional area of the glue dispensing groove is larger than that of the coarse hole section, the glue dispensing groove is located at the end of the coarse hole section away from the fine hole section and is connected to the coarse hole section, so that the glue liquid entering the glue dispensing groove flows into the coarse hole section.

7. The lead fixing structure according to claim 1, characterized by: The fixing body comprises a bottom plate and an extension protrusion provided corresponding to the insertion hole, the extension protrusion is arranged on the inner side of the bottom plate, and the extension protrusion is provided with a through hole which penetrates through the bottom plate to form the insertion hole.

8. The lead fixing structure according to claim 1, characterized by: The fine hole sections and the coarse hole sections are sequentially distributed along the insertion direction of the lead-out pin, and the port of the end of the fine hole section away from the coarse hole section is in the shape of a flared end.

9. The lead fixing structure according to claim 1, characterized by: The depth of the coarse hole section is greater than or equal to the depth of the fine hole section.

10. The lead fixing structure according to claim 1, characterized by: The fixing body is the base of an electromagnetic relay, the insertion hole and the lead-out pin are provided in plurality, the plurality of insertion holes and the plurality of lead-out pins are one-to-one corresponding, and the plurality of lead-out pins comprise one or more of a moving spring lead-out pin, a static spring lead-out pin and a coil lead-out pin.

11. An electromagnetic relay characterized by comprising: The lead-out pin fixing structure comprises the lead-out pin and the fixing body. The lead-out pin fixing structure comprises the lead-out pin and the fixing body.

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