Insulator and connector

Abstract

The application relates to an insulator and a connector, the insulator is provided with a plurality of plug-in mounting holes extending in the axial direction, the front end of each plug-in mounting hole is provided with a guide hole which is gradually contracted in the radial direction from front to back, the hole diameter of the guide hole is not less than the interval between the adjacent plug-in mounting holes, so that there is interference between the adjacent guide holes, a sunken round corner is arranged at the interference position, the chord length of the sunken round corner is greater than the chord length of the interference position at the front end surface of the insulator; the two guide holes with the interference have a tangent position A in the axial extension direction, the depth of the sunken round corner extending in the axial direction of the insulator is less than the length of the guide hole, and greater than the height from the tangent position A to the hole opening of the guide hole. According to the application, the radial size of the guide hole is increased, so that the hole opening size of the guide hole is greater than the hole interval size, and meanwhile, the sunken round corner is matched, the guiding function of the guide hole is not reduced, the forming effect of the insulator is better, and the problems of the flash and burr are avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of connectors, and particularly relates to an insulator and a connector. BACKGROUND

[0002] At present, the size of the connector is smaller and the spacing between the contact pieces is denser. Due to the tolerance accumulation of the combined parts, the chamfer size of the insulator hole of the dense contact piece cannot better meet the pinhole guiding size requirement caused by the structure. At present, the research on small-sized connectors is gradually carried out at home and abroad, and the basic feature is that the hole spacing is reduced to 0.635 mm. In order to meet the forming requirement of the hole insulator, the chamfer size of the hole is maximized to φ0.61 mm. This size limits the offset range of the connector structure required to ensure the insertion of the hole and the hole insulator, and the normal insertion can be realized only when the offset range is controlled to φ0.61 mm, which brings great difficulty to the structure design.

[0003] Therefore, it is necessary to optimize the traditional hole guiding form, increase the hole guiding range under the premise of not changing the hole spacing, meet the effective insertion of the pinhole piece, and also avoid the generation of the burr and burr problem, and meet the forming requirement of the insulator. SUMMARY

[0004] In order to solve the above problems, the application provides an insulator and a connector with the insulator, so that the guiding chamfer size of the contact piece mounting hole of the insulator is increased, the guiding range of the contact piece mounting hole is effectively increased, and the burr and burr problem is avoided under the premise that the guiding function is not reduced, so that the insulator has good forming effect.

[0005] The purpose of the application and the technical problems thereof are realized by adopting the following technical scheme. According to the insulator provided by the application, the insulator 1 is provided with a plurality of insertion hole mounting holes 2 extending in the axial direction, the front end of each insertion hole mounting hole 2 is provided with a guiding hole 3 with a gradually reduced radial size from front to back, the hole diameter of the guiding hole 3 is not less than the spacing between the adjacent insertion hole mounting holes 2, so that there is interference between the adjacent guiding holes 3, the interference part is provided with a sunken fillet 4, the chord length of the sunken fillet 4 is greater than the chord length of the interference part at the front end surface of the insulator 1, the two guiding holes 3 with interference have a tangent position A in the axial extension direction, the depth of the sunken fillet 4 extending in the axial direction of the insulator 1 is less than the length of the guiding hole 3, and is greater than the height from the tangent position A to the guiding hole hole 3.

[0006] The purpose of the application and the technical problems thereof can also be further realized by adopting the following technical measures.

[0007] The preceding insulator, in addition to the guide hole 3 located at the edge, forms a polygonal convex feature 5 between the adjacent sunken round corners 4 on any guide hole 3, and the reverse thickness side of the sunken round corner 4 constitutes one side of the convex feature 5.

[0008] The preceding insulator, in addition to the jack mounting hole 2 located at the edge, has six jack mounting holes 2 distributed around any jack mounting hole 2, so that the front end of any jack mounting hole 2 located at a non-edge position interferes with the six guide holes 3 around it.

[0009] The preceding insulator, the insulator has N rows and M columns of jack mounting holes 2 distributed therein, and in the same row, the guide holes at the front ends of adjacent jack mounting holes 2 interfere with each other; in the same column, the guide holes at the front ends of adjacent jack mounting holes 2 also interfere with each other.

[0010] The preceding insulator, the convex feature between the adjacent sunken round corners 4 on the same guide hole 3 is a 12-sided polygon.

[0011] The preceding insulator, the sunken round corner 4 is a perfect circle or an ellipse.

[0012] The preceding insulator, the tail of the insulator 1 further has an annular boss 7 for positioning in the connector housing.

[0013] The preceding insulator, the annular boss further has a positioning groove 8 on the outer periphery for cooperating with the locking key in the connector housing.

[0014] The preceding insulator, the jack mounting hole 2 is a stepped hole.

[0015] The present application has obvious advantages and beneficial effects compared with the prior art. By the above technical scheme, the present application can achieve considerable technical progress and practicality, and has wide industrial utilization value, and at least has the following advantages:

[0016] The present application increases the radial size of the guide hole, so that the size of the guide hole opening is larger than the size of the hole spacing, and cooperates with the sunken round corner to ensure that the guiding function of the guide hole is not reduced, and the insulator forming effect is better, and the flash and burr problems are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an insulator structure schematic view of embodiment 1 of the present application;

[0018] Figure 2 It is a top view of Figure 1 ;

[0019] Figure 3 It is a sectional view of Figure 1 ;

[0020] Figure 4 for Figure 3 Enlarged view of part of the image;

[0021] Figure 5 for Figure 1 A bottom view;

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

[0023] [Explanation of Key Component Symbols]

[0024] 1: Insulator

[0025] 2: Pin mounting holes

[0026] 3: Guide hole

[0027] 4: Recessed corners

[0028] 5: Protrusion feature

[0029] 6: Rounded corner edges

[0030] 7: Annular boss

[0031] 8: Positioning groove Detailed Implementation

[0032] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation, structure, features and effects of the insulator proposed according to the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0033] Please see Figures 1-5 In Embodiment 1 of the present invention, the insulator 1 is provided with a plurality of axially extending insertion mounting holes 2, and each insertion mounting hole 2 has a guide hole 3 at its front end for increasing the opening size and guiding the adapter pin into the hole to achieve pin insertion. The guide hole 3 has a flared structure with its radial dimensions gradually decreasing from front to back.

[0034] To increase the maximum diameter of the guide hole 3, the diameter of the guide hole 3 in this invention is not less than the hole spacing between adjacent insertion hole mounting holes 2, so that the guide holes 3 at the front ends of two adjacent insertion hole mounting holes 2 interfere (intersect) at a certain position. The interference exists between the guide holes 3 at the front ends of two adjacent insertion hole mounting holes 2, and there is no intersection between adjacent interference portions; that is, there are no common interference portions (intersecting portions) between the guide holes 3 at the front ends of any two pairs of adjacent insertion hole mounting holes 2.

[0035] A recessed fillet 4 is provided at the interference part between adjacent guide holes 3, and the recessed fillet is an arc groove that can connect adjacent guide holes 3. The depth of the arc groove extending along the axial direction of the insulator 1 is less than the length of the guide hole 3 extending along the axial direction of the insulator 1. Therefore, it is required that adjacent guide holes 3 have a tangent position A (the position where the diameter of the guide hole 3 is equal to the distance between adjacent insertion holes) along their axial extension length, and the distance from the tangent position A to the front end face (guide hole opening) of the insulator 1 is less than the depth of the arc groove formed by the recessed fillet 4.

[0036] The groove opening formed by the recessed fillet 4 is located at the front end face of the insulator 1. The chord length of the interference region formed by the intersection of the two guide holes 3 at a certain position along the axial direction of the insulator 1 is defined as the line connecting the intersection points of the two guide holes 3 at that position, i.e., the chord length of the arc region where any guide hole 3 intersects with the other guide hole at that position. Therefore, the chord length of the recessed fillet 4 in this invention is greater than the chord length of the interference region covered by the recessed fillet 4 at the front end face of the insulator 1, so that the recessed fillet 4 can eliminate the flash and burr problems formed at the intersection of the two guide holes 3 during the molding of the insulator 1.

[0037] In this embodiment of the invention, the insulator 1 has a circular cross-section. Except for the socket mounting holes 2 located at the edge, each socket mounting hole 2 is surrounded by six evenly distributed socket mounting holes. This ensures that the guide hole 3 at the front end of any socket mounting hole 2 located outside the edge interferes simultaneously with the six surrounding guide holes, resulting in six spaced-apart recessed fillets 4 on the guide hole 3. Conversely, the guide hole 3 at the front end of a socket mounting hole 2 located at the edge interferes simultaneously with at least three surrounding guide holes, resulting in at least three spaced-apart recessed fillets 4 on the guide hole 3.

[0038] In this embodiment of the invention, any two of the three guide holes 3 distributed in a 120° pattern interfere with each other, thereby forming a hexagonal protrusion 5 between these three mutually interfering guide holes 3. This protrusion 5 is formed by the recessed fillet 4, and it is flush with the front end face of the insulator 1. Specifically, three of the six sides of this protrusion 5 have basically consistent size and structural features, which are one side of the three recessed fillets 4 formed by the mutual interference positions of the three guide holes 3 in the thickness direction. The other three sides also have basically consistent size features, which are the parts connecting the edges of the guide hole 3 openings to adjacent recessed fillets 4. Thus, the six sides of this protrusion 5 are divided into two groups according to their shape and size features, each group including three sides, and the sides of the two groups with different size and shape features are staggered. In this embodiment of the invention, the surface of the insulator 1 has a hexagonal honeycomb structure.

[0039] The bottom of the arc groove formed by the recessed fillet 4 in this invention is a smooth surface, without any sharp edges. Since the guide hole 3 is a flared structure with its radial dimensions gradually decreasing from front to back along the extension direction, the intersection of the arc groove and the wall of the guide hole 3 forms an inclined rounded edge 6 that guides the pin to move into the guide hole 3.

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

[0041] In this embodiment of the invention, an annular protrusion 7 is also provided on the outer periphery of the tail of the insulator 1, which can be used to fix and position the insulator 1 in the connector housing.

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

[0043] In this embodiment of the invention, the insertion hole 2 is a stepped hole, but it is not limited to this.

[0044] Please see Figure 6 In Embodiment 2 of the present invention, the insulator 1 has a rectangular cross-section, and N rows and M columns of socket mounting holes 2 are distributed within the insulator 1, where M and N are both integers greater than 0. Within the same row, there is interference between the guide holes 3 at the front ends of adjacent socket mounting holes 2, and within the same column, there is also interference between the guide holes 3 at the front ends of adjacent socket mounting holes 2. As a result, the guide holes 3 at the front ends of two adjacent socket mounting holes in any row interfere with each other, and at the same time, the guide hole at the front end of each socket mounting hole also interferes with the guide hole at the front end of the corresponding position of the socket mounting hole in the adjacent row. The interference parts are all provided with a recessed fillet 4, so that a 12-shaped protrusion feature 5 is formed between the guide holes at the front ends of these four socket mounting holes. Six sides of this protrusion feature are formed by the inner walls of the four guide hole openings, and the other six sides are formed by the sides of the four recessed fillets 4 in the thickness direction.

[0045] In other embodiments of the present invention, the positions of the mounting holes of the insulator can be arranged according to the size and shape of the insulator and the number of mounting holes. The arrangement is not limited to the two mentioned above, but each arrangement will cause interference between the front guide holes of adjacent mounting holes. The setting of the sinking rounded corner at the interference position eliminates the appearance of sharp edges at the interference position, so that a polygonal protrusion feature is formed on the front end face of the insulator. When there are many mounting holes, the protrusion feature on the surface of the insulator makes the surface of the insulator honeycomb-like.

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

[0047] When the connector of the present invention is inserted with 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 inserted with the opening of the guide hole 3 (the size of the pin is much larger than the size of the recessed rounded corner and the side of the protruding feature 5, even if it is eccentrically inserted, the pin is still located in the opening of the guide hole 3, but it is not directly facing the center of the guide hole 3, but is offset to one side of the guide hole), if the pin is offset to the protruding 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 recessed rounded corner 4, when it is close to the recessed rounded corner 4, the rounded edge 6 formed by the intersection of the recessed rounded corner 4 and the inner wall of the guide hole 3 guides the pin to move into the guide hole.

[0048] This invention adds a recessed fillet to the insulator at the intersection of guide holes to eliminate burrs and flash. When the pin is inserted within the top circle dimension of the guide hole, the guiding function can be achieved regardless of whether it contacts the rounded edge or the guide slope with the protruding end face feature. When there are many holes, the interface forms a 6-shaped honeycomb surface.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An insulator having a plurality of axially extending insertion holes, each insertion hole having a guide hole at its front end that gradually tapers radially from front to back, characterized in that: The diameter of the guide hole is not less than the distance between adjacent insertion holes, so that there is interference between adjacent guide holes. A recessed fillet is provided at the interference location, and the chord length of the recessed fillet is greater than the chord length of the interference location at the front end face of the insulator. The two guide holes that interfere have a tangent position A in their axial extension direction. The depth of the recessed fillet extending along the axial direction 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 edges, a polygonal protrusion is formed between adjacent recessed fillets on any guide hole, and the opposite side of the thickness of the recessed fillet forms one side of the protrusion.

3. The insulator according to claim 2, characterized in that: Except for the socket mounting holes located at the edge, there are 6 socket mounting holes distributed around each socket mounting hole, so that the guide hole at the front end of any socket mounting hole located at a non-edge position will interfere 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, which are distributed in a 120 pattern, interfere with each other, forming a hexagonal protrusion among the three.

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

6. The insulator according to any one of claims 1-5, characterized in that: The sunken rounded corner is either 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 within the connector housing.

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

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

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

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