SMT connector
By designing limiting grooves and recesses on the side of the insulating body of the SMT connector, and cooperating with the connection part of the terminal group, the problem of poor coplanarity of terminal pins is solved, and the product yield is improved.
Patent Information
- Application Number
- CN202520124993.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing SMT connectors have poor terminal pin coplanarity, which easily exceeds the upper limit of 0.10mm, resulting in defective products.
Design an SMT connector including an insulating body and a terminal group mounted thereon. The insulating body has a boss extending from its side, and the boss has a limiting groove and a recess. The connecting part of the terminal group cooperates with the recess. The design of the limiting groove and the recess limits the terminal deflection and ensures the coplanarity of the terminal pins.
The combination of limiting grooves and recesses effectively limits terminal runout and improves product yield.
Smart Images
Figure CN223797554U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to connector technical field especially relates to a kind of SMT connectors. BACKGROUND
[0002] For example Figure 1 , the SMT connector of related art includes colloid 100 and terminal 200, and the terminal pin of the terminal 200 is welded and fixed on the circuit board 300, since the terminal 200 is in active state, it is difficult to control the coplanarity of the finished terminal of SMT connector, and it is easy to exceed the upper limit of 0.10mm, becoming defective product. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide a kind of SMT connectors.
[0004] The technical scheme adopted by the utility model to solve its technical problem is: a kind of SMT connector is structured, including insulating body and at least one terminal group installed in the insulating body, the side of the insulating body extends outward with boss, the boss is spaced apart with several limiting grooves along the first direction, the limiting groove penetrates the upper and lower surfaces of the boss, and the middle part of the limiting groove is provided with at least one groove, and the groove is communicated with the limiting groove.
[0005] Each of the terminal group includes several terminals, each of the terminals includes contact part, terminal pin and connecting part connecting the contact part and the terminal pin, the contact part is located on the side of the insulating body, and the connecting part is provided with at least one convex part matched with the groove.
[0006] In some embodiments, the convex part and the groove are gap matched.
[0007] In some embodiments, the height size of the convex part is less than the height size of the groove.
[0008] In some embodiments, the longitudinal section size of the part of the limiting groove away from the center of the boss is greater than the longitudinal section size of the part of the limiting groove close to the center of the boss.
[0009] In some embodiments, the longitudinal section size of the part of the groove away from the center of the boss is greater than the longitudinal section size of the part of the groove close to the center of the boss.
[0010] In some embodiments, the number of the groove of each limiting groove is two, and the two grooves are symmetrically arranged on the opposite inner side walls of the limiting groove along the axis of the limiting groove.
[0011] The number of the convex parts of each connecting part is two, and the two convex parts are symmetrically arranged on opposite sides of the connecting part along the axis of the connecting part, and the two convex parts are correspondingly clamped with the two grooves.
[0012] In some embodiments, the width dimension of the limiting groove is similar to the width dimension of the connecting part.
[0013] In some embodiments, the terminal pin is vertically arranged with the connecting part.
[0014] In some embodiments, the number of the terminal groups is two.
[0015] In some embodiments, the terminals include communication terminals and ground terminals.
[0016] The SMT connector comprises an insulating body and at least one terminal group mounted on the insulating body, the side surface of the insulating body extends outwardly with a boss, the boss is provided with a plurality of limiting grooves in a first direction, the limiting grooves pass through the upper and lower surfaces of the boss, the middle part of the limiting groove is provided with at least one groove, and the groove is arranged in communication with the limiting groove; each terminal group comprises a plurality of terminals, each terminal comprises a contact part, a terminal pin and a connecting part connecting the contact part and the terminal pin, the contact part is arranged on one side of the insulating body, and the connecting part is provided with at least one convex part matched with the groove. The convex part and the groove are matched with each other, the terminal can be limited, the up-down swing of the terminal can be limited, the coplanarity of the terminal pin of the SMT connector is ensured, and then the product yield can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings and embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:
[0018] Figure 1 It is a structural schematic diagram of the SMT connector of the related art;
[0019] Figure 2 It is a structural schematic diagram of the SMT connector and the circuit board in cooperation in some embodiments of the utility model;
[0020] Figure 3 It is an exploded view of the SMT connector in some embodiments of the utility model;
[0021] Figure 4 It is a front view of the SMT connector in some embodiments of the utility model;
[0022] Figure 5 is the front view of the insulation main body in some embodiments of the utility model;
[0023] Figure 6 is the front view of the terminal group in some embodiments of the utility model;
[0024] Figure 7 is Figure 4 partial structure detail view of the SMT connector of
[0025] Figure 8 is Figure 7 partial structure detail view of the limiting groove of
[0026] Figure 9 is Figure 7 partial structure detail view of the connecting part of DETAILED DESCRIPTION
[0027] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation manners of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical scheme, and do not indicate that the indicated device or element must have a particular direction, so it cannot be understood as a limitation on the utility model.
[0028] It should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly include one or more features. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0029] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0030] For the SMT connector (such as the SMT airfoil pin connector) of the related art, the terminal pin coplanarity is affected by the gel deformation, the non-consistency of terminal stamping, the size difference of two rows (or multiple rows) of terminal pins, the non-consistency of terminal pin rebound after bending, the stability of the assembly jig, etc., and finally the terminal pin coplanarity of the finished product is poor, which becomes a problem of unqualified products. The present application provides an SMT connector to solve the problem of terminal pin coplanarity of the connector.
[0031] Referring to Figures 2 to 9 The present application shows an SMT connector, which comprises an insulating main body 10 and at least one terminal group 20 installed on the insulating main body 10.
[0032] The side surface of the insulating main body 10 extends outwardly with a boss 11, the boss 11 is provided with a plurality of limiting grooves 111 spaced apart along a first direction, the limiting grooves 111 penetrate the upper and lower surfaces of the boss 11, the limiting grooves 111 are open grooves, and at least one recess 1111 is provided in the middle of the limiting grooves 111, and the recess 1111 is arranged in communication with the limiting grooves 111. Specifically, the insulating main body 10 can be made of plastic material, the insulating main body 10 can be substantially columnar, for example, rectangular columnar structure, one circumferential side surface of the insulating main body 10 extends outwardly with a boss 11, the boss 11 can be rectangular columnar structure, the boss 11 can be arranged close to the bottom of the insulating main body 10, the middle of the limiting grooves 111 refers to any position between the axial ends of the limiting grooves 111, and the "first direction" here can be the length direction of the insulating main body 10 or the boss 11. Preferably, the insulating main body 10 is of an integral structure.
[0033] Each terminal group 20 comprises a plurality of terminals 21, each of which comprises a contact portion 211, a terminal pin 212 and a connecting portion 213 connecting the contact portion 211 and the terminal pin 212, the contact portion 211 is arranged on one side of the insulating main body 10, and the end of the contact portion 211 away from the connecting portion 213 can be embedded in the insulating main body 10, and the connecting portion 213 is provided with at least one protrusion 2131 matched with the recess 1111.
[0034] The convex part 2131 cooperates with the groove 1111 to limit the terminal 21, limit the up and down swing of the terminal 21, ensure the coplanarity of the terminal pins 212 of the SMT connector, and then improve the product yield.
[0035] In some embodiments, when the number of terminal groups 20 is two or any other number greater than two, the structural size of the terminals 21 of different terminal groups 20 can be the same or different, for example, the length of the connecting part 213 of the terminals 21 of the first terminal group 20 can be greater or less than the length of the connecting part 213 of the terminals 21 of the second terminal group 20.
[0036] In some embodiments, the terminal pin 212 is vertically arranged with the connecting part 213. Preferably, the connecting part 213 is substantially in a long strip structure, the contact part 211 and the terminal pin 212 are respectively connected with both ends of the connecting part 213, and the extending directions of the contact part 211 and the terminal pin 212 are opposite, and the extending directions of all the terminal pins 212 are the same. The convex part 2131 can be substantially in a square structure or a rectangular structure, and the thickness thereof is the same as that of the connecting part 213.
[0037] In some embodiments, the terminals 21 include communication terminals and ground terminals, for example, part of the terminals 21 in the same terminal group 20 can be communication terminals, and another part of the terminals 21 in the terminal group 20 can be ground terminals.
[0038] In some embodiments, the convex part 2131 and the groove 1111 are clearance fitted, so that when the SMT connector is mounted on the circuit board 30, there is a certain adjustment space.
[0039] In some embodiments, the height dimension of the convex part 2131 is less than the height dimension of the groove 1111, and the height dimension of the convex part 2131 is less than the height dimension of the groove 1111 by 0.01-0.05 mm, so that the convex part 2131 can be moved in the height direction within the groove 1111 to facilitate slight adjustment, but the convex part 2131 can be limited to ensure the coplanarity of the terminal pins 212 of the terminal 21.
[0040] As Figure 7As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111.
[0041] As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Figure 7 As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111.
[0042] Figure 7 As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111.
[0043] As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111.
[0044] As shown, in some embodiments, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 is greater than the longitudinal cross-sectional dimension of the portion of the limiting groove 111 close to the center of the boss 11, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111. Preferably, the longitudinal cross-sectional dimension of the portion of the limiting groove 111 away from the center of the boss 11 can gradually decrease towards the center of the boss 11, so that the outer portion of the limiting groove 111 can form a first inclined guide surface 111a, so that the connecting portion 213 can be smoothly clamped into the limiting groove 111.
[0045] In some embodiments, the width dimension of the limiting groove 111 is similar to the width dimension of the connecting portion 213, such as the width dimension of the limiting groove 111 can be slightly greater than the width dimension of the connecting portion 213 by 0.01-0.05 mm.
[0046] In some embodiments, as shown in Figure 2 The utility model discloses still disclose an electronic device, the electronic device includes the SMT connector of any embodiment above, and circuit board 30, and the SMT connector installs on the circuit board 30, and all terminal feet 212 are welded and fixed on the circuit board 30.The circuit board 30 includes but not limited to PCB board.
[0047] It can be understood that the above embodiment only expresses the preferred implementation of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of variations and improvements can be made, which all belong to the protection scope of the utility model; therefore, all equivalent transformations and modifications with the utility model claim scope should belong to the coverage of the utility model claim.
Claims
1. An SMT connector, characterized by, The application relates to an insulation main body (10) and at least one terminal group (20) installed on the insulation main body (10), wherein the side of the insulation main body (10) extends outwardly with a boss (11), a plurality of limiting grooves (111) are arranged at intervals along a first direction on the boss (11), the limiting grooves (111) penetrate the upper and lower surfaces of the boss (11), and at least one recess (1111) is arranged in the middle of the limiting groove (111) and communicates with the limiting groove (111). Each terminal group (20) comprises a plurality of terminals (21), each terminal (21) comprises a contact part (211), a terminal pin (212) and a connecting part (213) connecting the contact part (211) and the terminal pin (212), the contact part (211) is arranged on one side of the insulation main body (10), and the connecting part (213) is provided with at least one convex part (2131) matched with the recess (1111).
2. The SMT connector according to claim 1, characterized by The convex part (2131) and the recess (1111) are gap matched.
3. The SMT connector of claim 2, wherein, The height dimension of the convex part (2131) is smaller than the height dimension of the recess (1111).
4. The SMT connector of claim 1, wherein, The longitudinal section dimension of the part of the limiting groove (111) far away from the center of the boss (11) is greater than the longitudinal section dimension of the part of the limiting groove (111) close to the center of the boss (11).
5. The SMT connector of claim 1, wherein, The longitudinal section dimension of the part of the recess (1111) far away from the center of the boss (11) is greater than the longitudinal section dimension of the part of the recess (1111) close to the center of the boss (11).
6. The SMT connector of claim 1, wherein, The number of the recess (1111) of each limiting groove (111) is two, and the two recesses (1111) are symmetrically arranged on the opposite inner side walls of the limiting groove (111) along the axis of the limiting groove (111). The number of the convex part (2131) of each connecting part (213) is two, and the two convex parts (2131) are symmetrically arranged on the opposite sides of the connecting part (213) along the axis of the connecting part (213), and the two convex parts (2131) are correspondingly clamped with the two recesses (1111).
7. The SMT connector of claim 1, wherein, The width dimension of the limiting groove (111) is similar to the width dimension of the connecting part (213).
8. The SMT connector of claim 1, wherein, The terminal pin (212) and the connecting part (213) are vertically arranged.
9. The SMT connector of claim 1, wherein, The number of the terminal group (20) is two.
10. The SMT connector according to any one of claims 1 to 9, characterized by The plurality of terminals (21) comprise communication terminals and ground terminals.