Relay base

Abstract

The utility model discloses a relay pedestal, which is provided with a plurality of jacks used for installing leading-out sheets of a relay, the jacks comprise a dispensing hole arranged on the lower surface of the pedestal and a positioning hole arranged on the upper surface of the pedestal, the positioning hole is communicated with the dispensing hole, the positioning hole is rectangular, two bosses are arranged in the dispensing hole, and the two bosses are arranged on the upper surface of the pedestal. The two bosses are opposite, and the opposite faces of the two bosses are flush with the two opposite side walls of the positioning hole respectively. The two bosses are additionally arranged in the dispensing hole, so that the positioning length and the positioning area of the lead-out sheet are prolonged, the lead-out sheet is prevented from inclining, the existing manufacturing and assembling cost is not increased, and the sealing performance requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of relays, and particularly relates to a relay base. Background Art

[0002] With the progress of modern technology, the requirements for the reliability, mechanical and electrical properties of some products are getting higher and higher. Most products require small size, good performance, etc.

[0003] At present, there are two ways to seal the pin positions of existing relay bases. One is to set very shallow grooves at the pin jack positions for filling glue. Such a form can only prevent dust and splash water, and cannot meet the requirements of some places with high sealing performance. It can only meet the waterproof level below IP54. The other is to directly set a dispensing hole at the pin jack. If a high waterproof level is required, the depth of the dispensing hole must be increased. Without changing the thickness of the base, increasing the depth of the dispensing hole will cause the positioning ability of the jack for the pin to decline, and the pin will be skewed after being inserted into the jack. In order to make the pin absolutely perpendicular to the base, the requirements for the insertion process are increased, resulting in difficult manufacturing and increased manufacturing costs.

[0004] Under the condition that the thickness of the relay base is required to be certain, airtightness requirements are needed for the positions of the static contacts and the solder pad holes of the product. Therefore, under such special conditions, the commonly used method is to directly dig holes. If the holes are dug too deep, the static contact pieces and the solder pads will be skewed during assembly, and the requirements for the insertion process are very high. They must be absolutely perpendicular, otherwise the product will get stuck on the guide rail in the subsequent process. Using the structure like this can avoid this situation, make the assembly work simple, and is easy to realize automatic assembly with reasonable design. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a relay base, which mainly solves the problems.

[0006] To achieve the above object, the utility model is realized through the following technical solutions:

[0007] A relay base is provided with a plurality of jacks for installing the lead-out pieces of the relay. The jacks include dispensing holes arranged on the lower surface of the base and positioning holes arranged on the upper surface of the base. The positioning holes are communicated with the dispensing holes. The positioning holes are rectangular. There are two bosses inside the dispensing holes. The two bosses are opposite to each other, and the opposite surfaces of the two bosses are respectively flush with two opposite side walls of the positioning holes.

[0008] Furthermore, the lower surface of the boss is higher than the lower surface of the base, and the distance between the lower surface of the boss and the lower surface of the base is not less than 0.6 mm.

[0009] Furthermore, the distance between the lower surface of the boss and the upper surface of the base is not less than 3.5 mm.

[0010] Furthermore, the side wall of the dispensing hole is enclosed by two opposite planes and two opposite curved surfaces.

[0011] Furthermore, the cross-section of the positioning hole is rectangular, including two short sides and two long sides. The opposite surfaces of the two bosses respectively coincide with the hole walls corresponding to the two short sides in the cross-section of the positioning hole.

[0012] The relay base provided by the utility model has the following advantages:

[0013] 1. By arranging two bosses in the dispensing hole, the opposite surfaces of the two bosses are equivalent to the extended parts of the two opposite side walls of the positioning hole. The lead-out piece is inserted between the two bosses, and an interference fit is formed between the two bosses and the lead-out piece. By adding two bosses in the dispensing hole, the opposite surfaces of the two bosses are equivalent to the extended parts of the side walls of the positioning hole, increasing the positioning area of the lead-out piece and the positioning length of the insertion direction of the lead-out piece.

[0014] 2. Adding bosses in the dispensing hole will not increase the existing manufacturing and assembly costs, and can ensure the dispensing thickness to meet the sealing performance requirements. Adding two bosses limits the swing of the lead-out piece. The structure is simple and the positioning reliability is high, which can meet the requirements of automated production.

[0015] 3. This structure is easy to implement, simple in structure and easy to manufacture, does not increase the assembly difficulty, and is easy to realize automated assembly, thus saving manufacturing costs and having good assembly stability of the lead-out piece, which can well guarantee the product life.

[0016] 4. By restricting the distances between the lower surface of the boss and the upper surface and the lower surface of the base, it is used to restrict the minimum positioning length of the lead-out piece and the minimum thickness of the glue, ensuring the positioning effect of the lead-out piece while ensuring the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the relay according to the embodiment of the utility model, and the lead-out piece passes through the jack of the base;

[0018] Figure 2 is Figure 1 another perspective view of the relay;

[0019] Figure 3 is Figure 2 a view of the relay perpendicular to the width direction of the lead-out piece;

[0020] Figure 4 is a schematic diagram of the base, showing the structure of the jack;

[0021] Figure 5 is Figure 4 a top view of the base of ;

[0022] Figure 6 is Figure 5 a sectional view taken along line A-A in ;

[0023] Figure 7 is Figure 5 a sectional view taken along line B-B in ; Detailed implementation manners

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] As Figures 1 to 3 shows a relay, which includes a base 1 and a housing 2, as well as an armature, a yoke, an iron core, a coil, a moving and a static contact, etc. sealed in the housing 2 and the base 1. Among them, the base 1 of the relay is provided with a plurality of jacks for installing the lead-out piece 5 of the relay, and the jacks correspond to the lead-out pieces 5 one by one. The lead-out piece 5 passes through the outer wall of the relay from the lower surface of the base 1, and the lower surface of the base 1 is as Figure 5 shown.

[0027] As Figures 4 to 7 , the jack includes a positioning hole 6 matching the lead-out piece 5 and a dispensing hole 3 located below the positioning hole 6. The dispensing hole 3 penetrates through the lower surface of the base 1, and the positioning hole 6 is communicated with the dispensing hole 3. The direction in which the lead-out piece 5 is inserted into the positioning hole 6 is defined as the depth direction of the positioning hole 6. The positioning hole 6 is rectangular, and the shape of the positioning hole 6 matches the shape of the part of the lead-out piece 5 in the positioning hole 6. The four side walls of the positioning hole 6 are in contact with the lead-out piece 5 to position the lead-out piece 5.

[0028] There are two bosses 4 inside the dispensing hole 3. The two bosses are opposite to each other, and the opposite surfaces of the two bosses 4 coincide with two opposite side walls of the positioning hole 6 respectively. The lead-out piece 5 is inserted between the two bosses 4, and both bosses are in contact with the lead-out piece 5 to form the positioning of the lead-out piece 5. In this embodiment, two opposite bosses are provided in the dispensing hole. The opposite surfaces of the two bosses are equivalent to the extended parts of the side walls of the positioning hole 6, increasing the positioning area of the lead-out piece 5 and the positioning length of the insertion direction of the lead-out piece 5, so as to better prevent the lead-out piece 5 from skewing. Preferably, the distance H1 between the lower surface of the boss 4 and the upper surface of the base is not less than 3.5 mm, that is, the overall positioning length of the lead-out piece 5 is not less than 3.5 mm, ensuring that the lead-out piece 5 is vertically inserted on the base 1. The boss 4 is preferably integrally injection-molded with the base 1, or can be manufactured separately and then welded. The cross-section of the positioning hole is rectangular, including two short sides and two long sides. The opposite surfaces of the two bosses coincide with the hole walls corresponding to the two short sides in the cross-section of the positioning hole 6. In other embodiments, it can also be that the opposite surfaces of the two bosses coincide with the hole walls corresponding to the two long sides in the cross-section of the positioning hole 6.

[0029] After the lead-out piece 5 is inserted into the dispensing hole 3, glue is dispensed in the dispensing hole 3 to fix the lead-out piece 5 and prevent the lead-out piece 5 from skewing. The lower surface of the boss 4 is higher than the lower surface of the base 1, and the height difference between the lower surface of the boss 4 and the lower surface of the base 1 is the minimum thickness of the glue. Preferably, the distance H2 between the lower surface of the boss 4 and the lower surface of the base 1 is not less than 0.6 mm, ensuring that the glue is thick enough to meet the airtightness requirements.

[0030] As Figure 4 , the side wall of the dispensing hole 3 is surrounded by two opposite planes 31 and two opposite curved surfaces 32, that is to say, the dispensing hole 3 has a shape similar to a circular lantern. Compared with the dispensing hole 3 with a circular cross-section, this shape of the dispensing hole has a smaller volume and saves the amount of glue dispensed.

[0031] In this embodiment, the lead-out piece 5 is the coil lead-out pin of the relay. In other embodiments, for the jacks of the components that pass through the base and have positioning requirements, the structure described in this embodiment can be referred to.

[0032] As described above, the embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Claims

1. A relay base, characterized in that: A plurality of jacks are provided for installing the lead-out pieces of the relay, and the jacks include a glue dispensing hole provided on the lower surface of the base and a positioning hole provided on the upper surface of the base, the positioning hole is connected to the glue dispensing hole, the positioning hole is rectangular, and two bosses are provided inside the glue dispensing hole, the two bosses are opposite to each other, and the opposite surfaces of the two bosses are respectively flush with two opposite side walls of the positioning hole.

2. The relay base according to claim 1, characterized in that: The lower surface of the boss is higher than the lower surface of the base, and the distance between the lower surface of the boss and the lower surface of the base is not less than 0.6 mm.

3. The relay base according to claim 1, characterized in that: The distance between the lower surface of the boss and the upper surface of the base is not less than 3.5 mm.

4. The relay base according to claim 1, characterized in that: The side wall of the dispensing hole is formed by two opposite planes and two opposite curved surfaces.

5. The relay base according to claim 1, characterized in that: The cross section of the positioning hole is rectangular, including two short sides and two long sides, and the opposite surfaces of the two bosses respectively overlap with the hole walls corresponding to the two short sides in the cross section of the positioning hole.

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