Coaxial connector locking structure

Abstract

The utility model discloses a locking structure of a coaxial connector, which comprises a plastic shell and an outer conductor, and the outer conductor is not provided with an annular boss for locking with the plastic shell; a locking piece protruding from inside to outside is formed on the outer conductor, and the front end face of the locking piece protrudes out of the outer surface of the outer conductor and serves as a front gear of a pushing stop position. The rear end face of the locking piece protrudes out of the outer surface of the outer conductor and serves as a rear gear of the rear pulling stop position. A locking groove is formed in the plastic shell, after the locking piece is arranged in the locking groove, the front gear and the rear gear of the locking piece abut against and make contact with the front inner wall and the rear inner wall of the locking groove respectively, so that the outer conductor and the plastic shell are assembled in a locked mode, the locking piece has the dual functions of thrust and retreat stopping, manufacturing is simpler, efficiency is higher, and due to the fact that an annular boss does not need to be formed on the outer conductor, cost is reduced. The inner surface and the outer surface of the outer conductor are straight and smooth in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor is small, and the outer conductor, the inner insulator and the inner conductor can form impedance matching of a specific specification.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to a coaxial connector locking structure. Background technology:

[0002] The main supporting fields of connectors include transportation, communications, networks, IT, medical treatment, home appliances, etc. The rapid development of the technical level of products in the supporting fields and the rapid growth of the market have strongly driven the development of connector technology. So far, connectors have developed into a series of professional products with a complete range of products, rich varieties and specifications, diverse structural types, subdivided professional directions, obvious industry characteristics, and standardized standard systems.

[0003] As a type of connector, a coaxial connector can be used to interconnect circuit boards, RF modules, and circuit boards.

[0004] The coaxial connector in the prior art generally includes a plastic shell, an outer conductor inserted into the plastic shell, an inner insulator arranged inside the outer conductor, and an inner conductor inserted into the inner insulator and arranged coaxially with the outer conductor. The inner conductor is connected to the metal core wire of the cable, and the rear end of the outer conductor is wrapped and fixed to the outside of the insulating outer sheath of the cable.

[0005] The structure of the outer conductor 1 is as follows: Figure 1 The outer conductor 1 is formed by wrapping a metal sheet, and at least two first annular bosses 11 and second annular bosses 12 are stamped and formed on the outside of the outer conductor 1, which protrude outward and are spaced apart. The first annular boss 11 and the second annular boss 12 are both annular, and the front end face of the first annular boss 11 serves as a front stop, and the rear end face of the second annular boss 12 is set as a rear stop, wherein a thrust step adapted to the front stop is provided in the plastic shell. After the outer conductor 1 is inserted into the plastic shell, the front end face of the first annular boss 11 contacts the thrust step to prevent the outer conductor 1 from being pushed in further, and a lock seat is fixed on the outside of the plastic shell from the outside to the inside, and the lock seat is partially pressed on the rear end face of the second annular boss 12 serving as the rear stop, so as to achieve the purpose of stopping retreat, thereby locking and fixing the outer conductor 1 in the plastic shell.

[0006] The above-mentioned outer conductor 1 has at least the following two disadvantages:

[0007] 1. Since the outer conductor 1 adopts two first annular bosses 11 and second annular bosses 12 protruding outward and spaced apart as locking structures, the first annular bosses 11 and the second annular bosses 12 are both annular, so that the inner wall of the outer conductor 1 is formed with a corresponding groove, that is, the inner and outer walls of the outer conductor 1 are not smooth enough, so that its high-frequency characteristic impedance fluctuates greatly, so that the outer conductor 1 cannot form an impedance match of a specific specification with the inner insulator and the inner conductor, affecting the quality of the coaxial connector.

[0008] 2. Since the outer conductor 1 is formed by wrapping a metal sheet, providing the first annular boss 11 and the second annular boss 12 will make the processing of the outer conductor 1 more difficult, thus affecting the production efficiency.

[0009] In view of this, the inventor proposes the following technical solution. Utility model content:

[0010] The utility model aims to overcome the deficiencies of the prior art and provide a coaxial connector locking structure.

[0011] In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: the coaxial connector locking structure includes a plastic shell and an outer conductor inserted into the plastic shell and locked with the plastic shell, and the outer conductor does not have an annular boss formed for locking with the plastic shell; the outer conductor is formed with a locking plate protruding from the inside to the outside, and the front end face of the locking plate protrudes from the outer surface of the outer conductor and serves as a front stop for pushing the stop; the rear end face of the locking plate protrudes from the outer surface of the outer conductor and serves as a rear stop for pulling the stop; the inside of the plastic shell has a locking groove, and when the locking plate is placed in the locking groove, the front stop of the locking plate is pressed and contacted with the front inner wall of the locking groove, and the rear stop of the locking plate is pressed and contacted with the rear inner wall of the locking groove, so that the outer conductor and the plastic shell form a locked assembly.

[0012] Furthermore, in the above technical solution, the locking plate includes a front locking portion that is pierced and stretched into shape on the outer conductor and a rear locking portion that is integrally connected to the rear side of the front locking portion, the rear locking portion is pierced into the outer conductor and bent outwardly into shape, and the rear end of the rear locking portion is inclined upward and protrudes beyond the surface of the outer conductor, and the rear end face of the rear locking portion serves as the rear stop, and gaps are formed between the two side faces of the rear locking portion and the outer conductor; the front end face of the front locking portion serves as the front stop.

[0013] Furthermore, in the above technical solution, both sides of the front locking portion are integrally connected to the outer conductor.

[0014] Furthermore, in the above technical solution, the rear stop is in an arc shape and is vertically distributed, and the center of the rear stop is coaxial with the center of the outer conductor.

[0015] Furthermore, in the above technical solution, the arc angle of the outer circle of the rear gear position is 30-100°.

[0016] Furthermore, in the above technical solution, the lower side of the front stop is connected to or abuts against the first puncture surface of the outer conductor in the vertical direction, and the lower side of the front stop does not protrude beyond the outer surface of the outer conductor, and the upper side of the front stop protrudes beyond the outer surface of the outer conductor.

[0017] Furthermore, in the above technical solution, arc transition surfaces are formed between the two side surfaces of the front locking portion and the outer surface of the outer conductor.

[0018] Furthermore, in the above technical solution, the front locking portion is an arc-shaped protrusion, and the upper surfaces of the front and rear ends are flush with each other, or the upper surface height of the front end is smaller than the upper surface height of the rear end.

[0019] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model replaces the two spaced annular bosses with the locking piece arranged on the outer conductor to be used for locking and fixing with the plastic shell, wherein, when the locking piece is placed in the locking groove, the front stop position of the locking piece is pressed and contacted with the front inner wall of the locking groove to achieve the purpose of thrust prevention, and the rear stop position of the locking piece is pressed and contacted with the rear inner wall of the locking groove to achieve the purpose of retreat prevention, that is, the outer conductor and the plastic shell form a locked assembly, so that the outer conductor cannot be pushed or pulled relative to the plastic shell, and its stability is excellent, thereby making The locking plate has the dual functions of preventing thrust and preventing retreat, and compared with forming two annular bosses with spaced distribution on the outer conductor, the locking plate is simpler to manufacture and more efficient. Since there is no need to form two annular bosses with spaced distribution on the outer conductor, the outer surface and the inner surface of the outer conductor are both straight and smooth in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor is small, so that the outer conductor can form an impedance matching of specific specifications with the inner insulator and the inner conductor arranged inside it, thereby meeting the use requirements of the coaxial connector and ensuring product quality. Description of the drawings:

[0020] Figure 1 It is a stereogram of the outer conductor structure in the prior art;

[0021] Figure 2 It is a three-dimensional diagram of the structure of the outer and inner conductors of the utility model;

[0022] Figure 3 It is a stereogram of the outer conductor structure of the utility model from another perspective;

[0023] Figure 4 It is a left view of the outer conductor structure of the utility model;

[0024] Figure 5 It is a right side view of the outer conductor structure of the utility model;

[0025] Figure 6 It is a cross-sectional view of the outer conductor structure of the utility model;

[0026] Figure 7 It is a cross-sectional view of the outer conductor structure of the utility model from another perspective;

[0027] Figure 8 It is a structural diagram of the utility model. Specific implementation method:

[0028] The utility model is further described below in conjunction with specific embodiments and drawings.

[0029] See Figure 2-Figure 8 As shown, a coaxial connector locking structure includes a plastic shell 2 and an outer conductor 3 that is inserted into the plastic shell 2 and locked and fixed with the plastic shell 2. The outer conductor 2 is formed by wrapping a metal sheet in a circle, and the connecting parts on the outer conductor 1 are connected by a plurality of groups of convex buckles and buckle grooves to form a cylindrical structure with stable structure.

[0030] The outer conductor 3 is not formed with an annular boss for locking with the plastic shell 2, so that the front shape of the outer conductor 3 is straight and smooth; instead, it is locked and fixed with the plastic shell 2 by setting a locking plate 31. Specifically, the outer conductor 3 is formed with a locking plate 31 protruding from the inside to the outside, and the front end face of the locking plate 31 protrudes from the outer surface of the outer conductor 3 and serves as a front stop 301 for pushing the stop; the rear end face of the locking plate 31 protrudes from the outer surface of the outer conductor 3 and serves as a rear stop 302 for pulling the stop; the plastic shell 2 has a locking groove 21 inside. When the locking plate 31 is placed in the locking groove 21, the front stop 301 of the locking plate 31 is pressed and contacted with the front inner wall of the locking groove 21, and the rear stop 302 of the locking plate 31 is pressed and contacted with the rear inner wall of the locking groove 21, so that the outer conductor 3 and the plastic shell 2 form a locked assembly. That is to say, the utility model replaces the two annular bosses distributed at intervals with the locking piece 31 provided on the outer conductor 3 for locking and fixing with the plastic shell 2, wherein, when the locking piece 31 is placed in the locking groove 21, the front stop 301 of the locking piece 31 is pressed and contacted with the front inner wall of the locking groove 21 to achieve the purpose of thrust prevention, and the rear stop 302 of the locking piece 31 is pressed and contacted with the rear inner wall of the locking groove 21 to achieve the purpose of retreat prevention, that is, the outer conductor 3 and the plastic shell 2 form a locked assembly, so that the outer conductor 3 cannot be pushed or pulled relative to the plastic shell 2, and its stability is excellent, thereby making the locking piece 3 The locking piece 31 has the dual functions of preventing thrust and preventing retreat, and compared with forming two annular bosses distributed at intervals on the outer conductor, the manufacturing process is simpler and more efficient. In addition, since there is no need to form two annular bosses distributed at intervals on the outer conductor, the outer surface and the inner surface of the outer conductor are both straight and smooth in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor is small, and then the outer conductor can form an impedance matching of a specific specification with the inner insulator 4 and the inner conductor 5 arranged therein, so as to meet the use requirements of the coaxial connector and ensure the product quality.

[0031] The specific molding structure of the locking plate 31 is:

[0032] The locking piece 31 includes a front locking portion 311 and a rear locking portion 312 , wherein the front end of the rear locking portion 312 is integrally connected to the rear side of the front locking portion 311 to form a whole.

[0033] The front locking portion 311 is formed by puncturing and stretching on the outer conductor 3, and the front end surface of the front locking portion 311 serves as the front stop 301. The front locking portion 311 is an arc-shaped protrusion, and the upper surface heights of the front and rear ends are flush, or the upper surface height of the front end is less than the upper surface height of the rear end. In this embodiment, the upper surface heights of the front and rear ends of the front locking portion 311 are flush, and the structure formed is more stable, and it is not easy to collapse and deform, ensuring that the front end surface of the locking piece 31 as the front stop 301 is more stably protruding from the outer surface of the outer conductor 3, thereby realizing the function of pushing the stop position; both sides of the front locking portion 311 are integrally connected with the outer conductor 3, which can increase the structural strength of the front locking portion 311, and arc transition surfaces 313 are formed between the two side surfaces of the front locking portion 311 and the outer surface of the outer conductor 3, which can further increase the structural strength of the front locking portion 311 and also increase the appearance.

[0034] In addition, the lower side of the front stop 301 is connected to or against the first puncture surface 32 in the vertical direction of the outer conductor 3, and the lower side of the front stop 301 does not protrude beyond the outer surface of the outer conductor 3, and the upper side of the front stop 301 protrudes beyond the outer surface of the outer conductor 3. The front stop 301 of this structure is stronger and will not be deformed, so that the function of the locking plate 31 will not fail, thereby ensuring the realization of the locking function.

[0035] The rear locking portion 312 is pierced on the outer conductor 3 and bent outwardly, and the rear end of the rear locking portion 312 is tilted upward and protrudes from the surface of the outer conductor 3, and the rear end surface of the rear locking portion 312 serves as the rear stop 302, and gaps 303 are formed between the two side surfaces of the rear locking portion 312 and the outer conductor 3, so that the rear locking portion 312 has a certain elastic deformation ability, that is, the rear locking portion 312 can be squeezed downward and deformed, and an outward elastic restoring force is formed after deformation, so that the rear locking portion 312 pops outward after entering the locking groove 21 to be pressed into the locking groove 21 from the inside to the outside, so that the rear stop 302 of the locking plate 31 forms a stable pressing contact with the rear inner wall of the locking groove 21, so that the outer conductor 3 and the plastic shell 2 form a locked assembly.

[0036] The rear stop 302 is arc-shaped and vertically distributed, and the center of the rear stop 302 is coaxial with the center of the outer conductor 3. The arc angle of the outer circle of the rear stop 302 is 30-100°. In this embodiment, the arc angle of the outer circle of the rear stop 302 is about 60°.

[0037] In order to allow the outer conductor 3 to pass through the plastic shell 2 more smoothly and ensure that the locking plate 31 and the plastic shell 2 form a better locking effect, the following design is also made: an elastic locking arm 22 is also provided in the plastic shell 2, and the elastic locking arm 22 has a certain elastic deformation ability, and the front end surface of the elastic locking arm 22 serves as a part of the rear inner wall of the locking groove 21. When the outer conductor 3 is inserted into the plastic shell 2, the locking piece 31 on the outer conductor 3 will contact the elastic locking arm 22 and squeeze and deform the elastic locking arm 22 outward, thereby increasing the size of the insertion space, so that the outer conductor 3 can be more smoothly inserted into the plastic shell 2. When the locking piece 31 passes over the elastic locking arm 22 and enters the locking groove 21, the front stop 301 of the locking piece 31 is pressed and contacted with the front inner wall of the locking groove 21, and at this time, the elastic locking arm 22 is reset, so that the rear stop 302 of the locking piece 31 is pressed and contacted with the front end surface of the elastic locking arm 22, thereby forming a more stable locking assembly between the outer conductor 3 and the plastic shell 2, and the locking effect is better.

[0038] The front end of the outer conductor 3 is formed with an inner card 33 protruding from the outside to the inside. The inner card 33 is used to press and position with the inner insulator 4 installed in the outer conductor 3, thereby achieving the purpose of locking.

[0039] In summary, the utility model replaces the two annular bosses distributed at intervals with the locking piece 31 provided on the outer conductor 3 for locking and fixing with the plastic shell 2, wherein, when the locking piece 31 is placed in the locking groove 21, the front stop 301 of the locking piece 31 is pressed and contacted with the front inner wall of the locking groove 21 to achieve the purpose of stopping thrust, and the rear stop 302 of the locking piece 31 is pressed and contacted with the rear inner wall of the locking groove 21 to achieve the purpose of stopping retreat, that is, the outer conductor 3 and the plastic shell 2 form a locked assembly, so that the outer conductor 3 cannot be pushed or pulled relative to the plastic shell 2, and its stability is excellent, thereby making the locking piece 3 The locking piece 31 has the dual functions of preventing thrust and preventing retreat, and compared with forming two annular bosses distributed at intervals on the outer conductor, the manufacturing process is simpler and more efficient. In addition, since there is no need to form two annular bosses distributed at intervals on the outer conductor, the outer surface and the inner surface of the outer conductor are both straight and smooth in the axial direction, so that the high-frequency characteristic impedance matching fluctuation of the outer conductor is small, and then the outer conductor can form an impedance matching of a specific specification with the inner insulator 4 and the inner conductor 5 arranged therein, so as to meet the use requirements of the coaxial connector and ensure the product quality.

[0040] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A coaxial connector locking structure, comprising a plastic shell (2) and an outer conductor (3) inserted into the plastic shell (2) and locked and fixed with the plastic shell (2), characterized in that: The outer conductor (3) is not formed with an annular boss for locking with the plastic shell (2); The outer conductor (3) is formed with a locking piece (31) protruding from the inside to the outside, the front end surface of the locking piece (31) protrudes outside the outer surface of the outer conductor (3) and serves as a front stop (301) for pushing the stop; the rear end surface of the locking piece (31) protrudes outside the outer surface of the outer conductor (3) and serves as a rear stop (302) for pulling the stop; The plastic shell (2) has a locking groove (21) inside. When the locking piece (31) is placed in the locking groove (21), the front stop (301) of the locking piece (31) is pressed and contacted with the front inner wall of the locking groove (21), and the rear stop (302) of the locking piece (31) is pressed and contacted with the rear inner wall of the locking groove (21), so that the outer conductor (3) and the plastic shell (2) form a locked assembly.

2. A coaxial connector locking structure according to claim 1, characterized in that: The locking plate (31) comprises a front locking portion (311) formed by puncturing and stretching the outer conductor (3) and a rear locking portion (312) integrally connected to the rear side of the front locking portion (311); the rear locking portion (312) is formed by puncturing the outer conductor (3) and bending outward, and the rear end of the rear locking portion (312) is inclined upward and protrudes outside the surface of the outer conductor (3), and the rear end surface of the rear locking portion (312) serves as the rear stop (302), and gaps (303) are formed between the two side surfaces of the rear locking portion (312) and the outer conductor (3); the front end surface of the front locking portion (311) serves as the front stop (301).

3. A coaxial connector locking structure according to claim 2, characterized in that: Both sides of the front locking portion (311) are integrally connected to the outer conductor (3).

4. A coaxial connector locking structure according to any one of claims 1 to 3, characterized in that: The rear stop (302) is in an arc shape and is vertically distributed, and the center of the rear stop (302) is coaxial with the center of the outer conductor (3).

5. A coaxial connector locking structure according to claim 4, characterized in that: The arc angle of the outer circle of the rear gear position (302) is 30-100°.

6. A coaxial connector locking structure according to claim 2, characterized in that: The lower side of the front stop (301) is connected to or abuts against the first puncture surface (32) of the outer conductor (3) in the vertical direction, and the lower side of the front stop (301) does not protrude beyond the outer surface of the outer conductor (3), while the upper side of the front stop (301) protrudes beyond the outer surface of the outer conductor (3).

7. A coaxial connector locking structure according to claim 6, characterized in that: Arc transition surfaces (313) are formed between the two side surfaces of the front locking portion (311) and the outer surface of the outer conductor (3).

8. A coaxial connector locking structure according to claim 7, characterized in that: The front locking portion (311) is an arc-shaped protrusion, and the upper surfaces of the front and rear ends are flush with each other, or the upper surface height of the front end is smaller than the upper surface height of the rear end.

Images