Blind hole fisheye terminal with circular arc on back and connector

Abstract

The utility model discloses a blind hole fisheye terminal with a circular arc at the back and a connector. The blind hole fisheye terminal comprises a guide section and a contact section, the contact section is connected to one end of the guide section in the length direction; the front surface of the contact section is concave inwards to form a blind hole type fisheye groove, the back surface of the contact section is convex outwards, two sides of the back surface in the width direction are respectively provided with a first abutting surface, the first abutting surfaces are used for abutting against the inner wall of a hole of the PCB, and the section of each first abutting surface, which is vertical to the extension direction of the contact section, is arc-shaped. According to the blind hole fisheye terminal with the circular arc on the back, the problem that the plugging force is too large when the blind hole fisheye terminal is matched with a PCB can be effectively improved, and the impedance when the blind hole fisheye terminal is matched with the PCB can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting terminal technical field, especially a kind of blind hole fish eye terminal with arc in back and the connector with it. BACKGROUND

[0002] In the related art, the fish eye terminal includes a guide section and a contact section, wherein the guide section is arranged at one end of the contact section to guide the contact section to be inserted into the hole of the PCB, the contact section is arranged in a form that the width dimension gradually decreases at both ends, and the contact section is provided with a blind hole on both front and back surfaces, and the cross section of the contact section is in H shape; the fish eye terminal has the following problems: on the one hand, the contact section is difficult to be deformed inward, so that the insertion and pulling force is too large when the fish eye terminal is matched with the hole of the PCB; on the other hand, the contact section contacts the inner wall of the hole of the PCB through four corners in the cross section, so that the contact area is small and the impedance is large, which affects the signal transmission. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems in the prior art. To this end, the utility model provides a blind hole fish eye terminal with arc in back, which can effectively improve the problem of too large insertion and pulling force when matched with the PCB, and effectively reduce the impedance when matched with the PCB.

[0004] The utility model further provides a connector with the blind hole fish eye terminal with arc in back.

[0005] According to the blind hole fish eye terminal with arc in back of the first aspect of the utility model, the contact section is connected to one end of the guide section in the length direction; the front surface of the contact section is concave and formed with a fish eye groove in the form of a blind hole, the back surface of the contact section is convex and formed with a first abutting surface on both sides in the width direction, the first abutting surface is used for abutting with the inner wall of the hole of the PCB, and the cross section of the first abutting surface perpendicular to the extension direction of the contact section is in arc shape.

[0006] According to the blind hole fish eye terminal with arc in back of the first aspect of the utility model, at least the following beneficial effects are achieved:

[0007] The back surface of the contact section is outwardly convex and the front surface is inwardly concave to form a blind hole type fish eye groove, so that the cross section of the contact section is substantially C-shaped, and when the contact section is matched with the hole of the PCB, the two sides of the contact section in the width direction can be deformed inwardly after being extruded by the inner wall of the hole, so that the problem of excessive insertion force when matched with the PCB can be effectively improved; meanwhile, the two sides of the back surface of the contact section are each formed with a first abutting surface, the first abutting surface is arc-shaped in the cross section perpendicular to the extension direction of the contact section, and is used for abutting with the inner wall of the hole of the PCB, so that the contact area between the contact section and the inner wall of the hole of the PCB can be effectively increased by means of the first abutting surface, and the impedance between the two can be effectively reduced and the signal transmission effect can be improved.

[0008] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the back surface of the contact section is formed with a second abutting surface, the second abutting surface is connected with the two first abutting surfaces, and the cross section of the second abutting surface perpendicular to the extension direction of the contact section is arc-shaped and tangent to the two first abutting surfaces.

[0009] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the contact section comprises a first deformation part, a second deformation part and an arched part, the arched part is arranged at the back side of the first deformation part and the second deformation part and jointly encloses the fish eye groove with the first deformation part and the second deformation part, and the first abutting surface and the second abutting surface are formed on the back surface of the arched part.

[0010] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the two ends of the contact section in the length direction are gradually narrowed and form a first transition zone and a second transition zone respectively, and the two ends of the fish eye groove in the length direction extend to the first transition zone and the second transition zone.

[0011] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the fish eye groove is formed with a first sharp corner end and a second sharp corner end in the first transition zone and the second transition zone respectively.

[0012] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the end of the guide section away from the contact section is provided with a guide inclined surface.

[0013] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the end of the guide section away from the contact section is provided with a guide inclined surface.

[0014] According to the blind hole fish eye terminal with the arc-shaped back part according to some embodiments of the first aspect of the utility model, the end of the guide section away from the contact section is provided with a guide inclined surface.

[0015] According to the blind hole fisheye terminal with arc back part of some embodiments of the first aspect of the utility model, the edge of the contact section is provided with a fillet structure, one end of the fillet structure extends to the third transition area, and the other end extends to one end of the guide inclined surface close to the contact section.

[0016] According to the connector of some embodiments of the second aspect of the utility model, the connector comprises the blind hole fisheye terminal with arc back part of the first aspect of the utility model,

[0017] According to the connector of some embodiments of the second aspect of the utility model, at least the following beneficial effects are achieved:

[0018] By adopting the connector of the first aspect of the utility model, the plug-in force in the plug-in process of the connector can be effectively reduced, and the impedance when the connector is connected can be reduced, thereby improving the signal transmission effect.

[0019] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and easily understood from the description of the embodiments combined with the following drawings, in which:

[0021] Figure 1 It is a structure schematic view of the blind hole fisheye terminal with arc back part of an embodiment of the utility model under one visual angle;

[0022] Figure 2 It is a structure schematic view of the blind hole fisheye terminal with arc back part of an embodiment of the utility model under one visual angle; Figure 1 It is a structure schematic view of the blind hole fisheye terminal with arc back part of an embodiment of the utility model under one visual angle;

[0023] Figure 3 It is a structure schematic view of the blind hole fisheye terminal with arc back part of an embodiment of the utility model under one visual angle; Figure 1 It is a transverse section (perpendicular to the extension direction of the contact section) schematic view of the fisheye terminal under the middle area position of the contact section;

[0024] Figure 4 It is a transverse section (perpendicular to the extension direction of the contact section) schematic view of the fisheye terminal under the middle area position of the contact section; Figure 1 It is a schematic view of the blind hole fisheye terminal with arc back part of an embodiment of the utility model inserted in the hole eye of the PCB;

[0025] Figure 5 It is a transverse section (perpendicular to the extension direction of the contact section) schematic view of the fisheye terminal under the middle area position of the contact section;

[0026] REFERENCE SIGNS:

[0027] Guide section 10; Guide inclined surface 11;

[0028] Contact section 20; first deformation part 21; second deformation part 22; arched part 23; first abutment surface 231; second abutment surface 232; fisheye groove 24; first sharp corner end 241; second sharp corner end 242; first transition zone 251; second transition zone 252; round corner structure 26;

[0029] Connection section 30; third transition zone 31;

[0030] PCB 400; eyelet 410; copper foil 420. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that, if the orientation description, such as up, down, left, right, front, back and the like, is described, the orientation or position relationship shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0033] In the description of the present application, if the first, second, etc. are described for the purpose of distinguishing technical features, they cannot be understood as indicating or implying relative importance or implying indicating the number of technical features indicated or implying indicating the sequence of technical features indicated.

[0034] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0035] The following will be described with reference to the accompanying drawings Figure 1 to the accompanying drawings Figure 5 , the back of the blind hole fisheye terminal with arc is described.

[0036] Referring to Figures 1 to 3According to the back arc blind hole fisheye terminal of some embodiments of the present application, the width size of the guiding section 10 is smaller than the width size of the contact section 20, and the guiding section 10 is used for guiding the contact section 20 to be inserted into the hole eye 410 of the PCB 400; the contact section 20 is connected to one end of the guiding section 10 in the length direction, and is the part of the fisheye terminal used for cooperating with the hole eye 410 of the PCB 400, so as to realize the conductive connection and signal transmission between the PCB 400 and the fisheye terminal. Specifically, the front surface of the contact section 20 is concave, and the fisheye groove 24 of the blind hole type is formed in the front surface of the contact section 20; the back surface of the contact section 20 is convex, and one first abutting surface 231 is formed on each of the two sides in the width direction of the back surface of the contact section 20; the first abutting surface 231 is used for abutting against the inner wall of the hole eye 410 of the PCB 400, and the first abutting surface 231 is arc-shaped in the cross section perpendicular to the extension direction of the contact section 20.

[0037] It should be understood that, due to the back surface of the contact section 20 being convex and the front surface of the contact section 20 being concave and the fisheye groove 24 of the blind hole type being formed in the front surface of the contact section 20, the cross section of the contact section 20 is approximately C-shaped, and thus when the contact section 20 cooperates with the hole eye 410 of the PCB 400, the two sides in the width direction of the contact section 20 can be deformed to contract inward after being extruded by the inner wall of the hole eye 410, so that the problem of excessive insertion and pulling force when cooperating with the PCB 400 can be effectively improved; at the same time, since the two sides in the width direction of the back surface of the contact section 20 each form one first abutting surface 231, and the first abutting surface 231 is arc-shaped in the cross section perpendicular to the extension direction of the contact section 20 and is used for abutting against the inner wall of the hole eye 410 of the PCB 400, the contact area between the contact section 20 and the inner wall of the hole eye 410 of the PCB 400 can be effectively increased by means of the first abutting surface 231, so that the connection impedance between the two can be effectively reduced and the signal transmission effect can be improved.

[0038] It can be understood that, in order to be better inserted into the hole eye 410 of the PCB 400, the width size of the end of the contact section 20 connected to the guiding section 10 gradually decreases and is the same as the width size of the end of the guiding section 10 close to the contact section 20. At the same time, in order to ensure good contact between the contact section 20 and the inner wall of the hole eye 410 of the PCB 400, the size of the middle region of the contact section 20 is usually larger than the size of the hole eye 410 of the PCB 400, so as to ensure that the contact section 20 can maintain good contact with the inner wall of the hole eye 410 of the PCB 400.

[0039] It can be understood that, in some embodiments, the back arc blind hole fisheye terminal of the present application is used for the fisheye terminal of the PCB 400. Figure 3The back surface of the contact section 20 is formed with a second abutting surface 232, the second abutting surface 232 connects the two first abutting surfaces 231, and the cross section of the second abutting surface 232 perpendicular to the extending direction of the contact section 20 is a circular arc shape and is tangent to the two first abutting surfaces 231, so that the cross section of the back surface of the contact section 20 perpendicular to the extending direction of the contact section 20 is an arch shape formed by connecting three circular arcs; it should be understood that the first abutting surface 231 and the second abutting surface 232 are formed on the back surface of the contact section 20, and the first abutting surface 231 and the second abutting surface 232 are respectively formed on the two sides of the contact section 20 in the width direction. Figure 4 and Figure 5 When the contact section 20 is inserted into the hole 410 of the PCB 400 and is in contact with and is pressed by the inner wall of the hole 410, not only the two sides of the contact section 20 in the width direction will shrink inward, but also the contact section 20 as a whole will move in the back direction, and at the same time, the inner wall of the hole 410 of the PCB 400 will also be deformed, that is, as shown in Figure 5 , the position where the inner wall of the hole 410 is in contact with the first abutting surface 231 is stretched, and the area opposite to the second abutting surface 232 of the inner wall of the hole 410 is correspondingly shrunk to the direction close to the second abutting surface 232, so as to at least fit with part of the area of the second abutting surface 232, and also make the contact area between the contact section 20 and the inner wall of the hole 410 of the PCB 400 further increase, so as to further reduce the impedance.

[0040] It can be understood that in order to form the structure that the front surface of the contact section 20 has the inner concave fish eye groove 24 and the back surface is outward convex and has a circular arc, in some embodiments, referring to Figures 1 to 3 , the contact section 20 is composed of three parts, and the three parts are respectively the first deformation part 21, the second deformation part 22 and the arch-shaped part 23, wherein the first deformation part 21 and the second deformation part 22 are oppositely arranged in the width direction, and the arch-shaped part 23 is arranged on the back side of the first deformation part 21 and the second deformation part 22, and the middle area of the arch-shaped part 23 is arched in the direction away from the first deformation part 21 and the second deformation part 22, and the two sides of the arch-shaped part 23 in the width direction are respectively connected with the first deformation part 21 and the second deformation part 22, so as to jointly form the fish eye groove 24 with the first deformation part 21 and the second deformation part 22, that is, the inner side surfaces of the first deformation part 21 and the second deformation part 22 respectively constitute the two side groove wall surfaces of the fish eye groove 24, and part of the front surface of the arch-shaped part 23 constitutes the groove bottom surface of the fish eye groove 24, and correspondingly, the first abutting surface 231 and the second abutting surface 232 are formed on the back surface of the arch-shaped part 23.

[0041] In some embodiments, the width of the two ends of the contact section 20 gradually narrows and forms a first transition area 251 and a second transition area 252, respectively, and the fish-eye groove 24 extends to the first transition area 251 and the second transition area 252. It should be understood that, on the one hand, the width of the two ends of the contact section 20 gradually narrows, which is beneficial for the contact section 20 to enter the hole 410 of the PCB 400 under the guidance of the guide section 10, and on the other hand, the fish-eye groove 24 also extends to the first transition area 251 and the second transition area 252 with gradually narrowed width, so that the solid of the front part of the contact section 20 forms an arch structure bulging outward on both sides in the width direction, thereby further improving the ability of the contact section 20 to shrink inward. For example, referring to Figure 1 and Figure 2 In one embodiment, specifically, the two ends of the first deformation part 21 and the second deformation part 22 are bent inward and gradually approach each other until they are connected, and the width of the two ends of the arch part 23 gradually narrows corresponding to the interval distance between the outer side of the first deformation part 21 and the outer side of the second deformation part 22, thereby forming the first transition area 251 and the second transition area 252 with gradually narrowed width together with the two ends of the first deformation part 21 and the second deformation part 22, and the width of the fish-eye groove 24 will also change corresponding to the change of the interval between the inner sides of the first deformation part 21 and the second deformation part 22, thereby enabling the fish-eye groove 24 to extend to the first transition area 251 and the second transition area 252, and the width of the two end parts of the fish-eye groove 24 extending to the first transition area 251 and the second transition area 252 will also gradually narrow corresponding.

[0042] And, referring to Figure 1In some embodiments, the fish-eye groove 24 is formed with a first sharp corner end 241 and a second sharp corner end 242 at the first transition area 251 and the second transition area 252 respectively. It should be understood that due to the contact extrusion between the contact section 20 and the inner wall of the hole 410 of the PCB 400, a certain degree of stress concentration will occur at the two ends of the fish-eye groove 24 in the length direction. By setting the same type and substantially symmetrical sharp corner ends at the two ends of the fish-eye groove 24, compared with the form of using a round corner end at one end and a sharp corner end at the other end of the fish-eye groove 24, the problem of large stress deviation and low consistency at the two ends of the fish-eye groove 24 can be effectively improved, thereby improving the problem of the fish-eye terminal being separated from the hole 410 of the PCB 400 due to the large stress deviation at the two ends, and further reducing the occurrence of signal transmission interruption.

[0043] It can be understood that, in order to improve the guiding effect of the guide section 10, in some embodiments, a guide inclined surface 11 is arranged at the end of the guide section 10 away from the contact section 20. For example, in one embodiment, referring to Figure 1 and Figure 2 , a guide inclined surface 11 is arranged on the front and back sides and the width direction of the guide section 10, so that the fish-eye terminal can be well guided to be correctly inserted into the hole 410 of the PCB 400 when the fish-eye terminal deviates in any direction on the board surface of the PCB 400.

[0044] It can be understood that, in some embodiments, the fish-eye terminal further comprises a connecting section 30 connected to the end of the contact section 20 away from the guide section 10, so as to facilitate the installation and fixation of the fish-eye terminal in the connector's rubber core or shell through the connecting section 30. In order to ensure the connection strength between the fish-eye terminal and the rubber core or shell, the width dimension of the connecting section 30 should not be too small, and the end of the connecting section 30 connected to the contact section 20 is formed with a third transition area 31 gradually narrowing in width along the direction close to the contact section 20 and smoothly connected with the second transition area 252, thereby reducing the fracture problem caused by stress concentration in the connection area between the connecting section 30 and the contact section 20.

[0045] It can be understood that, in some embodiments, referring to Figure 1 , the edge of the contact section 20 is provided with a round corner structure 26, and one end of the round corner structure 26 extends to the third transition area 31, and the other end extends to the end of the guide inclined surface 11 close to the contact section 20, so as to prevent the fish-eye terminal from scratching the copper foil 420 at the position of the hole 410 during insertion into the hole 410 of the PCB 400, thereby avoiding the problem of signal transmission failure.

[0046] The connector of the second aspect of the present application is described as follows, the connector of the present embodiment comprises the blind hole fish eye terminal with the arc at the back of the first aspect of the embodiment; it should be understood that by adopting the connector of the first aspect of the embodiment, the plug-in force in the plug-in process of the connector can be effectively reduced, and the impedance when the connector is connected can be reduced, and the signal transmission effect is improved.

[0047] It can be understood that in some embodiments, the connector further comprises a glue core or a shell, and the blind hole fish eye terminal with the arc at the back is provided with a plurality of blind hole fish eye terminals with the arc at the back, and the plurality of blind hole fish eye terminals with the arc at the back are connected and fixed to the glue core or the shell through the connecting segment 30, and the blind hole fish eye terminals with the arc at the back are arranged and distributed according to the set spacing.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A back arc of a circle blind hole fisheye terminal, characterized in that, The application relates to a blind-hole fisheye terminal with a back arc. The contact section is internally concave on the front surface and externally convex on the back surface, and two first abutting surfaces are respectively formed on the two sides of the back surface in the width direction, the first abutting surfaces are used for abutting with the inner wall of the hole of the PCB, and the cross section of the first abutting surfaces perpendicular to the extension direction of the contact section is circular arc-shaped. The back surface of the contact section is provided with a second abutting surface, the second abutting surface connects the two first abutting surfaces, and the cross section of the second abutting surface perpendicular to the extension direction of the contact section is circular arc-shaped and tangent to the two first abutting surfaces.

2. The back-bent blind-hole fish-eye terminal according to claim 1, wherein The contact section comprises a first deformation part, a second deformation part and an arch-shaped part, the arch-shaped part is arranged on the back side of the first deformation part and the second deformation part, and the first deformation part, the second deformation part and the arch-shaped part jointly enclose the fisheye groove, and the first abutting surface and the second abutting surface are formed on the back surface of the arch-shaped part.

3. The back-bent arcuate blind-hole fish-eye terminal according to claim 2, wherein The width of the two ends of the contact section in the length direction gradually narrows and respectively forms a first transition zone and a second transition zone, and the fisheye groove extends to the first transition zone and the second transition zone at the two ends in the length direction.

4. The back-bent blind-hole fish-eye terminal according to claim 1, wherein The fisheye groove respectively forms a first sharp corner end and a second sharp corner end in the first transition zone and the second transition zone.

5. The back-bent arcuate blind-hole fisheye terminal according to claim 4, characterized in that, The end of the guide section away from the contact section is provided with a guide inclined surface.

6. The back-bent arcuate blind-hole fish-eye terminal according to claim 4, wherein The application further comprises a connecting section connected to the end of the contact section away from the guide section.

7. The back-bent arcuate blind-hole fisheye terminal according to claim 6, characterized in that, The end of the connecting section connected with the contact section is provided with a third transition zone, the width of the third transition zone gradually narrows along the direction close to the contact section, and the third transition zone is smoothly connected with the second transition zone.

8. The back-bent arcuate blind-hole fisheye terminal according to claim 7, characterized in that, The edge of the contact section is provided with a round corner structure, one end of the round corner structure extends to the third transition zone, and the other end of the round corner structure extends to the end of the guide inclined surface close to the contact section.

9. The back-bent arcuate blind-hole fish-eye terminal of claim 8, wherein, The application further comprises the blind-hole fisheye terminal with a back arc as claimed in any one of claims 1 to 9.

10. A connector characterized by comprising: ​

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