A sleeve protection structure and a connector using the same

Abstract

The present application relates to a kind of sleeve protection structure and the connector using sleeve protection structure, sleeve protection structure includes shell assembly and the ceramic sleeve and metal sleeve installed in the corresponding accommodating hole of shell assembly, ceramic sleeve is sleeved in metal sleeve, metal sleeve one end has the metal sleeve orifice for the insertion of contact pin, metal sleeve orifice is provided with chamfer, the metal sleeve orifice is further provided with the matching section extending axially, the matching section has the axial length of the amount of deflection that can limit when contact pin is inserted, the position where the matching section is connected with chamfer is provided with fillet, metal sleeve and shell assembly between the clearance for metal sleeve is moved in accommodating hole.The present application proposes that sleeve protection structure is sleeved with a metal sleeve outside ceramic sleeve, gradually guides and corrects contact pin by metal sleeve that is not easy to damage first, so as to avoid the damage of ceramic sleeve orifice when contact pin enters ceramic sleeve due to excessive deflection.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and specifically relates to a sleeve protection structure and a connector using the sleeve protection structure. Background Technology

[0002] In existing technology, the ceramic sleeve inside the connector is used to protect the ceramic pins and ensure the coaxiality of the ceramic pin mating, thereby improving the signal transmission quality of the fiber optic connector and reducing contact loss. The ceramic sleeve encapsulation structure uses two upper and lower shells (O2) to encapsulate the ceramic sleeve inside the shells, such as... Figure 1 As shown, after the upper housing 01 and lower housing 02 are fastened together, the ceramic sleeve 03 is encapsulated inside. During insertion, it cannot be guaranteed that the pin 04 will enter the ceramic sleeve 03 in parallel. Therefore, after the ceramic sleeve 03 is inserted into the receiving hole inside the upper and lower housings, the ceramic sleeve 03 still needs a certain amount of room to move. However, when the pin 04 is inserted at an angle, due to the thin wall of the ceramic sleeve 03, there is a gap between the ceramic sleeve 03 and the upper / lower housings. Therefore, the opening of the ceramic sleeve is easily damaged when the pin enters the ceramic sleeve. Summary of the Invention

[0003] To address the technical problem of easy damage to ceramic sleeves in existing technologies, this invention provides a sleeve protection structure and a connector using the sleeve protection structure.

[0004] The objective of this invention and the technical problem it solves are achieved by the following technical solution. According to this invention, a sleeve protection structure includes a housing assembly and a ceramic sleeve and a metal sleeve installed in corresponding receiving holes in the housing assembly. The ceramic sleeve is fitted inside the metal sleeve. One end of the metal sleeve has a metal sleeve opening for inserting a pin. The metal sleeve opening has a chamfer. The metal sleeve opening also has an axially extending mating section with an axial length that limits the amount of deflection when the pin is inserted. A rounded corner is provided at the position where the mating section connects to the chamfer. A gap is left between the metal sleeve and the housing assembly for the metal sleeve to move within the receiving hole.

[0005] Furthermore, the gap between the metal sleeve and the housing assembly includes a first radial gap, and the gap between the metal sleeve and the ceramic sleeve is a second radial gap, which is smaller than the first radial gap.

[0006] Furthermore, if one end of the metal sleeve is folded inward or extended inward to form the metal sleeve opening, a step is naturally formed inside one end of the metal sleeve, which is used to axially limit the ceramic sleeve.

[0007] Furthermore, the housing assembly includes an upper housing and a lower housing that interlock with each other.

[0008] The application further provides a connector, which comprises a connector shell and a sleeve protection structure installed in the connector shell, the sleeve protection structure comprising a shell assembly, a ceramic sleeve and a metal sleeve installed in a corresponding accommodating hole of the shell assembly, the ceramic sleeve being sleeved in the metal sleeve, the metal sleeve having a metal sleeve aperture at one end thereof for insertion of a pin, the metal sleeve aperture being provided with a chamfer, the metal sleeve aperture being further provided with an axially extending fitting section, the fitting section having an axial length capable of limiting the deflection of the pin during insertion, the fitting section being provided with a rounded chamfer at a position where the fitting section connects with the chamfer, and a gap being left between the metal sleeve and the shell assembly for movement of the metal sleeve in the accommodating hole.

[0009] Further, the gap left between the metal sleeve and the shell assembly comprises a first radial gap, and a second radial gap is left between the metal sleeve and the ceramic sleeve, the second radial gap being smaller than the first radial gap.

[0010] Further, the one end of the metal sleeve is inwardly folded or extended to form the metal sleeve aperture, and a step is naturally formed inside the one end of the metal sleeve, the step being used for axially limiting the ceramic sleeve.

[0011] Further, the shell assembly comprises an upper shell and a lower shell which are buckled to each other.

[0012] Further, the connector is a plug or a socket.

[0013] By means of the above technical scheme, the application has the following beneficial effects:

[0014] The sleeve protection structure of the application is provided with a metal sleeve sleeved outside the ceramic sleeve, and a chamfer, a rounded chamfer and a fitting section are sequentially designed from outside to inside at the metal sleeve aperture, the metal sleeve which is not easy to be damaged is used to gradually guide and correct the pin multiple times, so that damage of the ceramic sleeve aperture caused by excessive deflection of the pin when the pin enters the ceramic sleeve is avoided.

[0015] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of a ceramic sleeve packaging structure in the prior art.

[0017] Figure 2 is a sectional view of a sleeve protection structure of the application.

[0018] Figure 3 is Figure 2 an enlarged view of part A in

[0019] Figures 4a to 4c This is a schematic diagram illustrating the guiding sequence during the insertion of the sleeve protection structure and the pin.

[0020] Figure 5 This is a schematic diagram showing the floating of the metal sleeve and ceramic sleeve in the receiving hole in this invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Lower shell

[0023] 2-Ceramic sleeve

[0024] 3-Metal Sleeve

[0025] 4-Upper shell

[0026] 5-Accommodation Hole

[0027] 6-pin

[0028] 7-First radial clearance

[0029] 8-Second radial gap

[0030] 31-Metal sleeve orifice

[0031] 311-Chamfer

[0032] 312-Coordination Section

[0033] 313 - Rounded Corners

[0034] 32 steps Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0036] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0037] An embodiment of a sleeve protection structure:

[0038] like Figures 2 to 5As shown, the sleeve protection structure comprises a lower shell 1, a ceramic sleeve 2, a metal sleeve 3 and an upper shell 4, the lower shell and the upper shell are buckled to each other to form a shell assembly and form a containing hole 5 for containing the metal sleeve and the ceramic sleeve in the shell assembly, the shell assembly limits the metal sleeve and the ceramic sleeve through a conventional step structure, the number of containing holes is one or more than two, the shell assembly is assembled and limited in the connector, the ceramic sleeve 2 is sleeved in the metal sleeve 3, the metal sleeve 3 has a metal sleeve aperture 31 at one end for inserting the pin 6, the metal sleeve aperture 31 is provided with a chamfer 311, and a small gap is left between the metal sleeve aperture position at the chamfer 311 and the socket, the pin is initially corrected, and the pin is prevented from being excessively inclined when entering the ceramic sleeve, wherein the small gap is smaller than the gap between the shell assembly and the pin in the prior art. The metal sleeve aperture is also provided with a matching section 312 extending in the insertion and extraction direction of the pin (i.e. the axial direction), the matching section 312 has a certain axial length, as shown in Figure 3 , the axial length is L, which can effectively limit the inclination of the pin 6 during insertion (as shown in Figure 4b ), control the inclination angle of the pin when entering the ceramic sleeve, and correct the inclination of the pin again after the pin enters the metal sleeve. When the pin 6 contacts the ceramic sleeve 2, the pin 6 has been corrected by the metal sleeve, and the phenomenon of damage to the ceramic sleeve aperture when the pin is inserted obliquely into the ceramic sleeve is avoided.

[0039] In this embodiment, the angle of the chamfer 311 of the metal sleeve aperture 31 should be larger, so that the pin 6 can enter the metal sleeve 3 more easily in the case of inclination. The position where the matching section 312 connects with the chamfer 311 is rounded 313, which facilitates the smoother entry of the pin into the ceramic sleeve.

[0040] A gap is left between the metal sleeve and the shell assembly for the movement of the metal sleeve in the containing hole, the gap left between the metal sleeve and the shell assembly includes a first radial gap 7 and an axial gap left between the shell assembly and the metal sleeve, the first radial gap is the distance between the metal sleeve 3 and the inner wall of the containing hole 5 in the radial direction, and the setting of the gap can ensure the floating amount of the metal sleeve in the containing hole. A second radial gap 8 is left between the metal sleeve 3 and the ceramic sleeve 2; in the radial direction, the second radial gap is smaller than the first radial gap, when the pin has a certain amount of inclination, the metal sleeve and the ceramic sleeve float together in the containing hole, so that the pin can enter the metal sleeve and then enter the ceramic sleeve, and the ceramic sleeve is effectively protected during the insertion process.

[0041] In combination with Figure 3, the end of the metal sleeve 3 is inwardly folded or inwardly extended to form the metal sleeve aperture 31, and a step 32 is naturally formed inside the end of the metal sleeve, which is used to axially limit the ceramic sleeve 2, and the inwardly extended metal sleeve aperture can also reduce the gap between the metal sleeve aperture and the pin, which is beneficial to the rapid correction of the pin during the pin insertion process and reduces the deflection amount of the pin during the pin insertion.

[0042] The principle of the present application for guiding the pin to protect the ceramic sleeve is as follows: Figure 4a When the pin 6 is inserted and the pin 6 is in a deflected state, a small gap is left between the segment of the chamfer 311 of the metal sleeve aperture and the pin 6 to initially correct the pin 6 and avoid excessive deflection of the pin 6 when the pin 6 enters the ceramic sleeve 2, the chamfer of the outermost end of the metal sleeve guides the pin, and the rounded chamfer 313 continuously guides the pin during the insertion process. Figure 4b When the pin 6 is inserted to the fitting segment 312, the fitting segment 312 continuously fits with the pin 6 to limit the deflection amount of the pin 6 during the pin insertion. Figure 4c When the pin 6 contacts the ceramic sleeve 2, the pin has been corrected by the metal sleeve and cannot directly resist the aperture of the ceramic sleeve at a large angle, thereby avoiding the damage to the aperture of the ceramic sleeve caused by the oblique insertion of the pin 6 into the ceramic sleeve 2. Figure 5 As shown in FIG. 6, since a relatively large first radial gap is left between the metal sleeve 3 and the inner wall of the accommodating hole, and a relatively small second radial gap is left between the ceramic sleeve 2 and the inner wall of the metal sleeve 3, the pin can enter the ceramic sleeve after entering the metal sleeve when the pin is obliquely inserted, which can float the ceramic sleeve and the metal sleeve, and the second radial gap can further realize the small floating of the ceramic sleeve relative to the metal sleeve, thereby effectively protecting the ceramic sleeve during the pin insertion process.

[0043] An embodiment of a connector:

[0044] The connector includes a connector housing and a sleeve protection structure arranged in the connector housing, which is the sleeve protection structure in the above-mentioned embodiment of the sleeve protection structure, which will not be described here, and the connector can be a plug or a socket. For example, when the sleeve protection structure is arranged in the socket, the pin can be a contact in the socket, which can protect the ceramic sleeve during the installation of the contact in the socket. Alternatively, the sleeve protection structure is arranged in the socket, and the pin is a contact in the plug end, which can protect the ceramic sleeve when the header connectors are inserted into each other.

[0045] The above merely describes preferred embodiments of the present application, and the matters not described are the prior art; any modification, equivalent change and modification made by any person skilled in the art according to the technical essence of the present application without departing from the technical solution range of the present application shall still fall within the technical solution range of the present application.

Claims

1. A sleeve protection structure, comprising a housing assembly and a ceramic sleeve and a metal sleeve installed in corresponding receiving holes in the housing assembly, characterized in that: The ceramic sleeve is fitted inside the metal sleeve. One end of the metal sleeve has a metal sleeve orifice for inserting a pin. The metal sleeve orifice is chamfered and also has an axially extending mating section. The mating section has an axial length that can limit the amount of deflection when the pin is inserted. The mating section is rounded at the position where it connects with the chamfer. A gap is left between the metal sleeve and the housing assembly to allow the metal sleeve to move in the receiving hole. The gap between the metal sleeve and the housing assembly includes a first radial gap and a second radial gap between the metal sleeve and the ceramic sleeve. The second radial gap is smaller than the first radial gap.

2. The sleeve protection structure according to claim 1, characterized in that: If one end of the metal sleeve is folded inward or extended inward to form the metal sleeve opening, a step is naturally formed inside the one end of the metal sleeve, which is used to axially limit the ceramic sleeve.

3. The sleeve protection structure according to claim 1, characterized in that: The housing assembly includes an upper housing and a lower housing that interlock with each other.

4. A connector, comprising a connector housing and a sleeve protection structure installed within the connector housing, the sleeve protection structure comprising a housing assembly and a ceramic sleeve and a metal sleeve installed in corresponding receiving holes in the housing assembly, characterized in that: The ceramic sleeve is fitted inside the metal sleeve. One end of the metal sleeve has a metal sleeve orifice for inserting a pin. The metal sleeve orifice is chamfered and also has an axially extending mating section. The mating section has an axial length that can limit the amount of deflection when the pin is inserted. The mating section is rounded at the position where it connects with the chamfer. A gap is left between the metal sleeve and the housing assembly to allow the metal sleeve to move in the receiving hole. The gap between the metal sleeve and the housing assembly includes a first radial gap and a second radial gap between the metal sleeve and the ceramic sleeve. The second radial gap is smaller than the first radial gap.

5. The connector according to claim 4, characterized in that: If one end of the metal sleeve is folded inward or extended inward to form the metal sleeve opening, a step is naturally formed inside the one end of the metal sleeve, which is used to axially limit the ceramic sleeve.

6. The connector according to claim 4, characterized in that: The housing assembly includes an upper housing and a lower housing that interlock with each other.

7. The connector according to claim 4, characterized in that: The connector is either a plug or a socket.

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