Insulator and connector

Abstract

The insulator is internally provided with a plurality of jack mounting holes extending in the axial direction, the front end of each jack mounting hole is provided with a guide hole, the radial size of each guide hole is gradually reduced from front to back, and the diameter of the hole opening of each guide hole is not smaller than the distance between every two adjacent jack mounting holes. The interference part is provided with a sinking fillet, and the chord length of the sinking fillet is greater than the chord length of the interference part on the front end surface of the insulator; the two guide holes with interference have a tangent position A in the axial extension direction, and the depth of the sinking fillet extending in the axial direction of the insulator is smaller than the length of the guide hole and larger than the height from the tangent position A to the opening of the guide hole. By increasing the radial size of the guide hole, the size of the hole opening of the guide hole is larger than the size of the hole pitch, meanwhile, the sinking fillet is matched, it is guaranteed that the guide function of the guide hole is not reduced, the forming effect of the insulator is better, and the problems of flash and burrs are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to an insulator and a connector. Background Art

[0002] At present, the size of connectors is getting smaller and smaller, and the spacing between contacts is getting denser and denser. Due to the tolerance accumulation of the combined parts, the chamfer size of the insulator hole with denser contacts cannot meet the pinhole guide size requirements brought by the structure. At present, research on nano-miniature connectors has been gradually carried out at home and abroad, and its basic feature is that the hole spacing is reduced to 0.635mm. In order to meet the forming requirements of the hole insulator, the maximum chamfer size of the hole is φ0.61mm. This size limits the connector structure to ensure that the offset range between the jack and the insulator hole needs to be controlled within φ0.61mm for normal insertion, which brings great difficulty to the structural design.

[0003] Therefore, it is necessary to optimize the traditional hole guide form, increase the hole guide range without changing the hole spacing, meet the effective insertion of the pinhole parts, and avoid the generation of flash and burr problems to meet the insulator forming requirements. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an insulator and a connector having the insulator, which can effectively increase the guide range of the contact mounting hole opening on the insulator by increasing the size of the guide chamfer of the contact mounting hole opening; at the same time, through the design of the sunken fillet, the expanded guide chamfer can avoid the occurrence of flash and burrs without reducing the guiding function, so that the insulator has a good forming effect.

[0005] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to an insulator proposed by the present invention, a plurality of axially extending plug-in mounting holes 2 are provided in the insulator 1, and a guide hole 3 with a gradually shrinking radial dimension from front to back is provided at the front end of each plug-in mounting hole 2, and the orifice diameter of the guide hole 3 is not less than the spacing between adjacent plug-in mounting holes 2, so that there is interference between adjacent guide holes 3, and a sunken fillet 4 is provided at the interference portion, and the chord length of the sunken fillet 4 is greater than the chord length of the interference portion at the front end face of the insulator 1; the two interfering guide holes 3 have a tangent position A in their axial extension direction, and the depth of the sunken fillet 4 along the axial extension of the insulator 1 is less than the length of the guide hole 3, and greater than the height from the tangent position A to the orifice 3 of the guide hole.

[0006] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0007] In the aforementioned insulator, except for the guide holes 3 located at the edge, polygonal raised features 5 are formed between adjacent sunken fillets 4 on any guide hole 3 , and the side with the opposite thickness of the sunken fillet 4 constitutes one side of the raised feature 5 .

[0008] The aforementioned insulator, except for the jack mounting hole 2 located at the edge, has 6 jack mounting holes distributed around any jack mounting hole 2, so that the guide hole 3 at the front end of any jack mounting hole 2 located at a non-edge position interferes with the 6 guide holes 3 around it at the same time.

[0009] The aforementioned insulator has N rows and M columns of jack mounting holes 2 distributed therein, and in the same row, there is interference between the guide holes at the front ends of adjacent jack mounting holes 2; in the same column, there is also interference between the guide holes at the front ends of adjacent jack mounting holes 2.

[0010] In the aforementioned insulator, the convex feature between adjacent sunken fillets 4 on the same guide hole 3 is a dodecagon.

[0011] In the aforementioned insulator, the sunken fillet 4 is a perfect circle or an ellipse.

[0012] The aforementioned insulator, the outer periphery of the tail of the insulator 1 is also provided with an annular boss 7 for achieving positioning in the connector housing.

[0013] The aforementioned insulator has a positioning groove 8 on the outer periphery of the annular boss for anti-rotation cooperation with the convex key in the connector housing.

[0014] In the aforementioned insulator, the jack mounting hole 2 is a stepped hole.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention can achieve considerable technical advancement and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0016] The present invention increases the radial size of the guide hole so that the guide hole opening size is larger than the hole spacing size, and at the same time cooperates with the sinking fillet to ensure that the guiding function of the guide hole is not reduced, and the insulator forming effect is better, avoiding the occurrence of flash and burr problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the insulator structure of Example 1 of the present invention;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 for Figure 1 A cross-sectional view of

[0020] Figure 4 for Figure 3 A partial enlarged view of

[0021] Figure 5 for Figure 1 Bottom view of

[0022] Figure 6 This is a top view of the insulator of Example 2 of the present invention.

[0023]

Main component symbol description

[0024] 1: Insulator

[0025] 2: Pin mounting hole

[0026] 3: Guide hole

[0027] 4: Sinking fillet

[0028] 5: Raised features

[0029] 6: Rounded edges

[0030] 7: Annular boss

[0031] 8: Positioning slot DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the insulator proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0033] See also Figure 1-5 In the embodiment 1 of the present invention, a plurality of jack mounting holes 2 extending in the axial direction are provided in the insulator 1, and a guide hole 3 is provided at the front end of each jack mounting hole 2 for increasing the hole size and guiding the adapter end pin to enter to achieve pinhole insertion. The guide hole 3 is a bell mouth structure with a radial size gradually shrinking from front to back.

[0034] In order to increase the maximum diameter of the guide hole 3, the hole diameter of the guide hole 3 of the present invention is not less than the hole spacing between adjacent jack mounting holes 2, so that the guide holes 3 at the front ends of two adjacent jack mounting holes 2 have interference (intersection) at some positions at the front ends. The interference of the present invention exists between the guide holes 3 at the front ends of two adjacent jack mounting holes 2, and there is no intersection between the adjacent interference parts, that is, there is no common interference part (intersection part) between the guide holes 3 at the front ends of three adjacent jack mounting holes 2.

[0035] A sunken fillet 4 is provided at the interference portion between adjacent guide holes 3, and the sunken fillet is an arc groove that can connect adjacent guide holes 3, and the depth of the arc groove along the axial extension of the insulator 1 is less than the length of the guide hole 3 along the axial extension of the insulator 1, thereby requiring adjacent guide holes 3 to have a tangent position A (the position where the diameter of the guide hole 3 is equal to the distance between adjacent jack mounting holes) on their axial extension length, and the distance from the tangent position A to the front end face of the insulator 1 (the guide hole opening) is less than the depth of the arc groove formed by the sunken fillet 4.

[0036] The notch of the circular arc groove formed by the above-mentioned sunken fillet 4 is located at the front end face of the insulator 1. The chord length of the interference portion formed by the intersection of the two guide holes 3 at a certain axial position of the insulator 1 is defined as the line connecting the intersection points of the two guide holes 3 at this position, that is, the chord length of the arc area where any guide hole 3 intersects with the other guide hole at this position. Then the chord length of the sunken fillet 4 of the present invention is greater than the chord length of the interference portion covered by the sunken fillet 4 at the front end face of the insulator 1, so that the sunken fillet 4 can eliminate the flash and burr problems formed at the intersection of the two guide holes 3 when the insulator 1 is formed.

[0037] In the embodiment of the present invention, the cross section of the insulator 1 is circular, and in the insulator 1, except for the jack mounting hole 2 located at the edge, there are six jack mounting holes evenly distributed around any jack mounting hole 2, so that the guide hole 3 at the front end of any jack mounting hole 2 located at a non-edge position interferes with the six guide holes distributed around it at the same time, and there are 6 sunken fillets 4 distributed at intervals on the guide hole 3. The guide hole 3 at the front end of the jack mounting hole 2 located at the edge position interferes with at least three guide holes distributed around it at the same time, so that there are at least three sunken fillets 4 distributed at intervals on the guide hole 3.

[0038] In the embodiment of the present invention, any two of the three guide holes 3 distributed in 120 degrees interfere with each other, so that a hexagonal raised feature 5 is formed between the three mutually interfering guide holes 3, and the raised feature 5 is formed by the sinking of the sunken fillet 4, which is flush with the front end surface of the insulator 1. Specifically, three of the six sides of the raised feature 5 have basically the same size and structural characteristics, which are one of the sides in the thickness direction of the three sunken fillets 4 formed at the positions where the three guide holes 3 interfere with each other, and the other three sides also have basically the same size characteristics, which are the parts connecting the adjacent sunken fillets 4 at the edges of the guide holes 3. As a result, the six sides of the raised feature 5 are divided into two groups according to the shape and size characteristics, each group includes three sides, and the two groups of sides with different size and shape characteristics are staggered. In the embodiment of the present invention, the surface of the insulator 1 presents a hexagonal honeycomb structure.

[0039] The bottom of the circular arc groove formed by the sunken fillet 4 of the present invention is a smooth surface without sharp edges. Since the guide hole 3 is a bell-mouth structure with a radial dimension gradually shrinking from front to back along the extension direction, the intersection of the circular arc groove and the wall of the guide hole 3 forms an inclined fillet edge 6 for guiding the pin to move into the guide hole 3.

[0040] In the embodiment of the present invention, the sunken fillet 4 is a perfect circle, but in other embodiments of the present invention, the sunken fillet 4 may also be an ellipse.

[0041] In the embodiment of the present invention, an annular boss 7 is further provided on the outer periphery of the tail portion of the insulator 1 , and the insulator 1 can be fixedly positioned in the connector housing through the annular boss 7 .

[0042] In the embodiment of the present invention, the outer periphery of the insulator 1 is further provided with a positioning groove 8 for cooperating with a convex key in the connector housing to achieve circumferential anti-rotation. Preferably, the positioning groove 8 is located on the annular boss 7, but is not limited thereto.

[0043] In the embodiment of the present invention, the jack mounting hole 2 is a stepped hole, but is not limited thereto.

[0044] See also Figure 6 In the second embodiment of the present invention, the insulator 1 has a rectangular cross section, and N rows and M columns of jack mounting holes 2 are distributed in the insulator 1, where M and N are both integers greater than 0; in the same row, there is interference between the guide holes 3 at the front ends of adjacent jack mounting holes 2, and in the same column, there is also interference between the guide holes 3 at the front ends of adjacent jack mounting holes 2. As a result, the guide holes 3 at the front ends of two adjacent jack mounting holes in any row interfere with each other, and at the same time, the guide hole at the front end of each jack mounting hole also interferes with the guide hole at the front end of the jack mounting hole at the corresponding position in the adjacent row, and the interference portion is provided with a sunken fillet 4, so that a 12-deformed convex feature 5 is formed between the guide holes at the front ends of the four jack mounting holes, and 6 of the sides of the convex feature are composed of the inner walls of the four guide hole openings, and the other 6 sides are composed of the sides of the four sunken fillets 4 in the thickness direction.

[0045] In other embodiments of the present invention, the positions of the jack mounting holes in the insulator can be arranged according to the size and shape of the insulator and the number of assembly sockets. The arrangement method is not limited to the above two methods, but each arrangement method will cause interference between the front end guide holes of adjacent jack mounting holes. The setting of the sunken fillet at the interference position eliminates the appearance of sharp edges at the interference position, so that a polygonal raised feature is formed at the front end face of the insulator. When there are more jack mounting holes, the raised features on the surface of the insulator make the surface of the insulator honeycomb-shaped.

[0046] The present invention also provides a connector having the above-mentioned insulator 1, wherein the insulator 1 is fixed in a housing of the connector, and a socket is fixed in each socket mounting hole 2 of the insulator 1.

[0047] When the connector of the present invention is plugged into the adapter connector, the front end of the pin in the adapter connector is guided by the guide hole 3 at the front end of the insulator 1. When the pin is eccentrically plugged into the opening of the guide hole 3 (the size of the pin is much larger than the size of the side of the sunken fillet and the raised feature 5. Even if it is eccentrically plugged in, the pin is still located in the opening of the guide hole 3, but is not directly facing the center of the guide hole 3, and is offset to one side of the guide hole), if the pin is offset toward the raised feature 5, the inclined surface of the opening of the guide hole 3 plays a guiding role, guiding the pin to move into the guide hole 3; if the pin is offset to the sunken fillet 4 and approaches the sunken fillet 4, the rounded edge 6 formed by the intersection of the sunken fillet 4 and the inner wall of the guide hole 3 guides the pin to move into the guide hole.

[0048] The insulator of the present invention adds a sunken fillet at the intersection of the guide hole to remove the flash and burr problems; when the pin is inserted within the top circle size range of the guide hole, the guide function can be achieved regardless of the contact fillet edge or the end face convex feature guide slope. When the number of holes is large, the interface forms a 6-deformed honeycomb surface.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An insulator, wherein a plurality of jack mounting holes extending in the axial direction are provided in the insulator, and a guide hole whose radial dimension gradually shrinks from front to back is provided at the front end of each jack mounting hole, characterized in that: The opening diameter of the guide hole is not less than the spacing between adjacent jack mounting holes, so that there is interference between adjacent guide holes, and a sunken fillet is provided at the interference portion, and the chord length of the sunken fillet is greater than the chord length of the interference portion at the front end surface of the insulator; the two interfering guide holes have a tangent position A in their axial extension direction, and the depth of the sunken fillet along the axial extension of the insulator is less than the length of the guide hole, and greater than the height from the tangent position A to the opening of the guide hole.

2. The insulator according to claim 1, characterized in that: Except for the guide holes located at the edge, a polygonal convex feature is formed between adjacent sunken fillets on any guide hole, and the side with the opposite thickness of the sunken fillet constitutes one side of the convex feature.

3. The insulator according to claim 2, characterized in that: Except for the jack mounting holes located at the edge, there are 6 jack mounting holes distributed around any jack mounting hole, so that the guide hole at the front end of any jack mounting hole located at a non-edge position interferes with the 6 guide holes around it at the same time.

4. The insulator according to claim 2, characterized in that: Any two of the three guide holes distributed at 120 degrees interfere with each other, forming a hexagonal convex feature between the three.

5. The insulator according to claim 2, characterized in that: The insulator is provided with N rows and M columns of jack mounting holes, and in the same row, there is interference between the guide holes at the front ends of adjacent jack mounting holes; in the same column, there is also interference between the guide holes at the front ends of adjacent jack mounting holes.

6. The insulator according to any one of claims 1 to 5, characterized in that: The sunken fillet is a perfect circle or an ellipse.

7. The insulator according to claim 6, characterized in that: The outer periphery of the insulator tail is also provided with an annular boss for positioning in the connector housing.

8. The insulator according to claim 7, characterized in that: The outer periphery of the annular boss is also provided with a positioning groove for anti-rotation cooperation with the convex key in the connector housing.

9. The insulator according to claim 6, characterized in that: The jack mounting hole is a stepped hole.

10. A connector, comprising a connector housing and an insulator, characterized in that: The insulator is the insulator described in any one of claims 1-9.

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