Elastic lock catch structure of connector

Abstract

The utility model discloses an elastic lock catch structure of a connector, which comprises a plastic shell and an outer conductor arranged in an inner hole of the plastic shell in a penetrating manner, a locking piece protruding from inside to outside is formed on the outer conductor, a locking groove is arranged on the inner wall of the inner hole of the plastic shell, an elastic lock catch arm is integrally formed on the plastic shell, and the front end of the elastic lock catch arm extends into the inner hole. When the locking piece outwards opens the elastic lock catch arm and gets across the elastic lock catch arm to enter the lock groove, the front end face of the locking piece makes contact with the front inner wall of the lock groove in an abutting mode, and the front end face of the elastic lock catch arm makes contact with the rear end face of the locking piece in an abutting mode. The elastic lock catch arm and the plastic shell are integrally connected, the structure is extremely simple, the number of parts is not increased, the elastic lock catch arm does not need to be assembled relative to the plastic shell, and the problems that installation is inconvenient and precision is not high do not exist; the locking piece plays a role in thrust and retaining, and compared with two annular bosses which are distributed at intervals and formed on the outer conductor, the locking piece can enable the outer conductor, the inner insulator arranged in the outer conductor and the inner conductor to form impedance matching of specific specifications.

Description

Technical field:

[0001] The utility model relates to the technical field of connector products, in particular to an elastic locking structure of a connector. 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 Chinese utility model patent with application number 202320404842.8 discloses a terminal locking member and a connector, which is also a coaxial connector. A retaining plate plug hole 403 connected to the small diameter section of the shielding shell through hole 401 is formed on the connector housing 40. A retaining plate 70 is inserted in the retaining plate plug hole 403. A U-shaped notch 701 is formed on the retaining plate 70 and matches the annular groove 302. The U-shaped notch 701 is inserted in the annular groove 302 to constitute a shielding shell retaining structure to prevent the metal shielding shell 30 from moving axially backward in the shielding shell through hole 401.

[0005] The above-mentioned shield shell backstop structure adopts an external backstop plate 70 to be inserted and fixed in the connector shell 40, and is clamped with the annular groove 302 of the metal shield shell 30, which has the following disadvantages: first, it needs to add a backstop plate, the number of its parts increases, and the backstop plate is small in size, which is inconvenient to install; secondly, when the backstop plate is inserted into the backstop plate socket 403 on the connector shell 40, it is also necessary to consider the backstop plate and the backstop plate socket 403 to form a fixed stability, that is, it is necessary to add a buckle on the backstop plate, A corresponding card slot is set in the retreat plate socket 403, and its structure is more complicated; finally, the assembly problem of the retreat plate also needs to be considered. When the retreat plate is inserted into the retreat plate socket 403, it is necessary to ensure that the U-shaped notch 701 of the retreat plate 70 can be inserted into the annular groove 302. If the retreat plate is inserted crookedly, it will cause the retreat plate 70 to be unable to be fully inserted into the retreat plate socket 403. At the same time, it cannot be ensured that the U-shaped notch 701 of the retreat plate 70 can be inserted into the annular groove 302, which requires the installation accuracy of the retreat plate 70 to be higher.

[0006] In view of this, the inventor proposes the following technical solution. Utility model content:

[0007] The utility model aims to overcome the deficiencies of the prior art and provide a connector elastic locking structure.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: the elastic locking structure of the connector includes a plastic shell and an outer conductor inserted into the inner hole of the plastic shell and locked and fixed with the plastic shell, the outer conductor is formed with a locking piece protruding from the inside to the outside, the inner wall of the inner hole of the plastic shell is provided with a locking groove, the plastic shell is also integrally formed with an elastic locking arm with elastic deformation ability, the front end of the elastic locking arm extends into the inner hole, when the locking piece pushes the elastic locking arm outward and passes over the elastic locking arm into the locking groove, the front end face of the locking piece is pressed and contacted with the front inner wall of the locking groove, and the front end face of the elastic locking arm is in conflict with the rear end face of the locking piece.

[0009] Furthermore, in the above technical solution, the front end surface of the elastic locking arm is aligned with the rear inner wall of the locking groove and is on the same vertical plane.

[0010] Furthermore, in the above technical solution, the lower side surface of the front end of the elastic locking arm is set as an arc surface, the center of the arc surface is coaxial with the center of the outer conductor, and the arc surface is pressed from the outside to the inside and wrapped around the outer surface of the outer conductor to form surface contact.

[0011] Furthermore, in the above technical solution, the elastic locking arm has a guide groove which is connected to the inner hole and guides the locking plate to be inserted, and the guide groove is also connected to the arc surface.

[0012] Furthermore, in the above technical solution, the elastic locking arm is formed with arc-shaped reinforcing ribs on both sides of the introduction groove for enhancing elasticity.

[0013] Furthermore, in the above technical solution, horizontal air-avoiding grooves are formed between the two sides of the elastic locking arm and the plastic shell, and the horizontal air-avoiding grooves also horizontally penetrate the locking groove.

[0014] Furthermore, in the above technical solution, the width of the locking plate is greater than the width of the horizontal air avoidance groove in the vertical direction; when the outer conductor rotates in the inner hole of the plastic shell, the front end face of the locking plate is always in contact with the front inner wall of the locking groove, and the rear end face of the locking plate is always in contact with the rear inner wall of the locking groove or the front end face of the elastic locking arm, performing 360° locking.

[0015] Furthermore, in the above technical solution, the locking groove is an arc-shaped groove, the front inner wall of the locking groove is an annular inner wall, the rear inner wall of the locking groove is a non-annular inner wall, and the front end face of the elastic locking arm is located on the upper side of the rear inner wall of the locking groove.

[0016] Furthermore, in the above technical solution, the elastic locking arm includes an elastic arm integrally connected to the plastic shell and distributed obliquely, and a locking portion formed at the front end of the elastic arm, the front end face of the locking portion contacts the rear end face of the locking plate, the lower side of the locking portion has an arc surface, and is pressed and contacted with the outer surface of the outer conductor through the arc surface.

[0017] Furthermore, in the above technical solution, a secondary lock seat is snap-fastened on the plastic shell, and the secondary lock seat is also against the elastic lock arm; or, the secondary lock seat is located on the upper side of the elastic lock arm, and a gap is formed therebetween.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model replaces the backstop plate as a separate part with an elastic locking arm, and the elastic locking arm is connected to the plastic shell in one piece, and its structure is extremely simple, so as not to increase the number of parts, and the elastic locking arm does not need to be assembled relative to the plastic shell, and there is no problem of inconvenient installation and low installation accuracy; in addition, the utility model replaces the two spaced annular bosses with a locking plate arranged on the outer conductor for locking and fixing with the plastic shell, wherein, when the locking plate is placed in the locking groove, the front end face of the locking plate is pressed and contacted with the front inner wall of the locking groove to achieve the purpose of thrust stopping, and at this time, the elastic locking arm is reset, the front end of the elastic locking arm also presses the outer conductor, and the rear end face of the locking plate is pressed and contacted with the front end face of the elastic locking arm, The purpose of preventing retreat is achieved, and an elastic locking structure is formed, so that the outer conductor and the plastic shell form a more stable locking assembly, and the locking effect is better; that is, the outer conductor and the plastic shell form a locking assembly, so that the outer conductor cannot be pushed or pulled relative to the plastic shell, and its stability is excellent, so that the locking plate has the dual functions of preventing thrust and preventing retreat, and the locking plate is simpler and more efficient to make than two annular bosses formed at intervals on the outer conductor, and since there is no need to form two annular bosses formed 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, so that the outer conductor can form an impedance matching of specific specifications with the inner insulator and the inner conductor arranged inside it, so as to meet the use requirements of the coaxial connector and ensure product quality. Description of the drawings:

[0019] Figure 1 It is a three-dimensional diagram of the structure of the outer and inner conductors of the utility model;

[0020] Figure 2 It is a stereogram of the outer conductor structure of the utility model from another perspective;

[0021] Figure 3 It is a left view of the outer conductor structure of the utility model;

[0022] Figure 4 It is a right side view of the outer conductor structure of the utility model;

[0023] Figure 5 It is a cross-sectional view of the outer conductor structure of the utility model;

[0024] Figure 6 It is a cross-sectional view of the outer conductor structure of the utility model from another perspective;

[0025] Figure 7 It is a structural diagram of the utility model;

[0026] Figure 8 It is a three-dimensional diagram of the plastic shell in the utility model;

[0027] Fig. 9 It is a cross-sectional view of the plastic shell in the utility model from the first viewing angle;

[0028] Fig.10 It is a cross-sectional view of the plastic shell in the utility model from a second viewing angle;

[0029] Fig.11 It is a cross-sectional view of the plastic shell in the utility model from a third viewing angle;

[0030] Fig.12 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 12 o'clock position);

[0031] Fig.13 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 1 o'clock direction);

[0032] Fig.14 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 2 o'clock position);

[0033] Fig.15 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 3 o'clock position);

[0034] Fig.16 This is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 4 o'clock position);

[0035] Fig.17 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 5 o'clock position);

[0036] Fig.18 It is an assembly diagram of the plastic shell and the outer conductor in the utility model (the locking piece is at the 6 o'clock position). Specific implementation method:

[0037] The utility model is further described below in conjunction with specific embodiments and drawings.

[0038] See Figure 2-Figure 18As shown, a connector elastic 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 protrusions and grooves to form a cylindrical structure with a stable structure.

[0039] The traditional outer conductor can also be formed by wrapping a metal sheet in a circle. The outer part of the outer conductor is stamped with at least two first annular bosses and a second annular bosses that protrude outward and are spaced apart. The first annular boss and the second annular boss are both annular. The front end face of the first annular boss serves as a front stop, and the rear end face of the second annular boss is set as a rear stop. A thrust step that matches the front stop is provided in the plastic shell. After the outer conductor is inserted into the plastic shell, the front end face of the first annular boss contacts the thrust step to prevent the outer conductor from being pushed in further. A lock seat is fixed on the outer part of the plastic shell from the outside to the inside. The lock seat is partially pressed on the rear end face of the second annular boss serving as the rear stop, so as to achieve the purpose of stopping retreat, thereby locking and fixing the outer conductor in the plastic shell. Since the outer conductor uses two first annular bosses and second annular bosses that protrude outward and are spaced apart as locking structures, the first annular boss and the second annular boss are both annular, so that the inner wall of the outer conductor is formed with a corresponding groove, that is, the inner wall of the outer conductor is not smooth enough, so that its high-frequency characteristic impedance fluctuates greatly, so that the outer conductor and the inner insulator and the inner conductor cannot form an impedance match of a specific specification, affecting the quality of the coaxial connector.

[0040] The utility model makes the following improvements to the outer conductor 3: wherein the plastic shell 2 is provided with an inner hole 20 passing through the front and rear ends, the outer conductor 3 is inserted into the inner hole 20, and the outer conductor 3 is not formed with an annular boss for locking with the plastic shell 2, so that the outer conductor 3 has a straight and smooth appearance; instead, it is locked and fixed with the plastic shell 2 by providing a locking piece 31. Specifically, the outer conductor 3 is formed with a locking piece 31 protruding from the inside to the outside, and the front end surface of the locking piece 31 protrudes from the outer surface of the outer conductor 3 The outer conductor 3 is outside the outer surface, and serves as a front stop 301 for pushing; the rear end face of the locking piece 31 protrudes outside the outer surface of the outer conductor 3, and serves as a rear stop 302 for pulling back; 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. 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.

[0041] The specific molding structure of the locking plate 31 is:

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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°.

[0047] The front end edge 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.

[0048] 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 integrally formed in the plastic shell 2, and the elastic locking arm 22 has a certain elastic deformation ability. The front end of the elastic locking arm 22 extends into the inner hole 20, and the front end surface of the elastic locking arm 22 can be used 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, that is, the locking piece 31 will push 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 end surface of the locking piece 31 (that is, the front gear position 301) 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 end surface of the locking piece 31 (that is, the rear gear position 302) is pressed and contacted with the front end surface 22 of the elastic locking arm 22, forming an elastic locking structure, thereby forming a more stable locking assembly between the outer conductor 3 and the plastic shell 2, and the locking effect is better. That is, the utility model replaces the anti-recoil plate as a separate part with the elastic locking arm 22, and the elastic locking arm 22 is integrally connected to the plastic shell 2, and its structure is extremely simple, so as not to increase the number of parts, and the elastic locking arm 22 does not need to be assembled relative to the plastic shell 2, and there is no problem of inconvenient installation and low installation accuracy; in addition, the utility model replaces the two spaced annular bosses 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 end face 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 stopping, and at this time, the elastic locking arm 22 is reset, the front end of the elastic locking arm 22 also presses the outer conductor 3, and the rear end face of the locking piece 31 is pressed and contacted with the front end face 22 of the elastic locking arm 22 to achieve the purpose of anti-recoil. And form an elastic locking structure, so that the outer conductor 3 and the plastic shell 2 form a more stable locking assembly, and the locking effect is better; that is, the outer conductor 3 and the plastic shell 2 form a locking assembly, so that the outer conductor 3 cannot be pushed or pulled relative to the plastic shell 2, and its stability is excellent, so that the locking piece 31 plays a dual function of stopping thrust and stopping retreat, and the locking piece 31 is simpler to make and more efficient than forming two annular bosses spaced apart on the outer conductor, and since there is no need to form two annular bosses spaced apart 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 a specific specification with the inner insulator 4 and the inner conductor 5 arranged inside it, meet the use requirements of the coaxial connector, and ensure product quality.

[0049] The front end surface 220 of the elastic locking arm 22 is aligned with the rear inner wall of the locking slot 21 and is in the same vertical plane, so that the front end surface 220 of the elastic locking arm 22 can serve as a part of the rear inner wall of the locking slot 21 to define the locking plate 31.

[0050] In order to improve the concentricity after the outer conductor 3 is inserted into the inner hole 20, and to make the outer conductor 3 more stably positioned in the inner hole 20, the following design is also made: the lower side surface of the front end of the elastic locking arm 22 is set as an arc surface 221, the center of the arc surface 221 is coaxial with the center of the outer conductor 3, and the arc surface 221 is pressed from the outside to the inside and wrapped around the outer surface of the outer conductor 3 to form a surface contact, thereby ensuring the contact area between the elastic locking arm 22 and the outer conductor 3, so that the elastic locking arm 22 is stably positioned on the outer conductor 3, thereby ensuring that the outer conductor 3 is more stably positioned in the inner hole 20, and can also ensure the concentricity of the assembly of the outer conductor 3, thereby improving product quality.

[0051] Horizontal avoidance grooves 23 are formed between the two sides of the elastic locking arm 22 and the plastic shell 2, and the horizontal avoidance grooves 23 also horizontally penetrate the locking groove 21, so that the elastic arm of the elastic locking arm 22 is long enough to have a better elastic deformation ability.

[0052] In order to allow the outer conductor 3 to be smoothly inserted into the inner hole 20, the following design is also made: the elastic locking arm 22 has an introduction groove 222 that is connected to the inner hole 20 and guides the locking piece 31 to be inserted, and the introduction groove 222 is also connected to the arc surface 221. When the outer conductor 3 is inserted into the inner hole 20, the locking piece 31 is guided to be inserted through the introduction groove 222, thereby not only allowing the outer conductor 3 to be smoothly inserted into the inner hole 20, but also avoiding the phenomenon of excessive pressure on the locking piece 31 causing deformation of the locking piece 31, thereby ensuring the service life and quality of the locking piece 31, so that the locking piece 31 can better realize the locking function.

[0053] The elastic locking arm 22 is formed with arc-shaped reinforcing ribs 223 on both sides of the introduction groove 222 for reinforcing elasticity. By adding the arc-shaped reinforcing ribs 223 to enhance elasticity, not only can the accidental breakage of the elastic locking arm 22 be avoided, but also the elastic force can be enhanced to better contact with the outer conductor 3, thereby ensuring the stability of the assembly structure.

[0054] The locking groove 21 is an arc-shaped groove, the front inner wall of the locking groove 21 is an annular inner wall, the rear inner wall of the locking groove 21 is a non-annular inner wall, and the front end surface 220 of the elastic locking arm 22 is located on the upper side of the rear inner wall of the locking groove 21, so that it can serve as a part of the rear inner wall to complete the rear inner wall.

[0055] The elastic locking arm 22 includes an elastic arm 201 which is integrally connected to the plastic shell 2 and is distributed obliquely, and a locking portion 202 formed at the front end of the elastic arm 201. The front end surface of the locking portion 202 contacts the rear end surface of the locking plate 31. The lower side of the locking portion 202 has an arc surface 221, and is pressed and contacted with the outer surface of the outer conductor 3 through the arc surface 221.

[0056] A secondary lock seat 24 is also snap-fastened on the plastic shell 2, and the secondary lock seat 24 also abuts against the elastic lock arm 22; or, the secondary lock seat 24 is located on the upper side of the elastic lock arm 22, and a gap is formed therebetween; the above two assembly methods of the secondary lock seat 24 can both prevent the elastic lock arm 22 from being stretched outward, thereby ensuring that the elastic lock arm 22 stably abuts against the outside of the outer conductor 3, and at the same time form a stable lock structure with the locking plate 31, confining the locking plate 31 in the lock groove 21.

[0057] The width of the locking piece 31 is greater than the width of the horizontal avoidance groove 23 in the vertical direction; when the outer conductor 3 rotates in the inner hole 20 of the plastic shell 2, the front end face of the locking piece 31 is always in contact with the front inner wall of the locking groove 21, and the rear end face of the locking piece 31 is always in contact with the rear inner wall of the locking groove 21 or the front end face 220 of the elastic locking arm 22, so as to perform 360° locking. Specifically, the locking of the locking piece 31 at different angles is described in detail below by clock orientation:

[0058] At 12 o'clock: Combined Figure 7 and Fig.12 As shown, at this time, the elastic locking arm 22 and its introduction groove 222 are at the 12 o'clock direction, which is the only direction in which the outer conductor 3 can be inserted into the inner hole 20 of the plastic shell 2. When the outer conductor 3 is inserted into place, the front end face of the locking plate 31 contacts the front inner wall of the locking groove 21, and the rear end face of the locking plate 31 contacts the front end face 220 of the elastic locking arm 22 for locking.

[0059] At 1 o'clock: Combined Fig.13 As shown, at this time, the outer conductor 3 rotates 30° relative to the plastic shell 2, so that the locking piece 31 is at the 1 o'clock direction. The rear end surface of the locking piece 31 partially contacts the front end surface 220 of the elastic locking arm 22, and the rear end surface of the locking piece 31 partially contacts the rear inner wall of the locking groove 21, while the front end surface of the locking piece 31 always contacts the front inner wall of the locking groove 21, which can also achieve locking.

[0060] At 2 o'clock: Combined Fig.14As shown, at this time, the outer conductor 3 rotates 60° relative to the plastic shell 2, so that the locking piece 31 is at the 2 o'clock direction. The rear end face of the locking piece 31 partially contacts the front end face 220 of the elastic locking arm 22, and the rear end face of the locking piece 31 partially contacts the rear inner wall of the locking groove 21, while the front end face of the locking piece 31 always contacts the front inner wall of the locking groove 21, which can also achieve locking.

[0061] At 3 o'clock: Combined Fig.15 As shown, at this time, the outer conductor 3 is rotated 90 degrees relative to the plastic shell 2, so that the locking piece 31 is at the 3 o'clock direction. The rear end face of the locking piece 31 is partially or completely in contact with the rear inner wall of the locking groove 21, and the front end face of the locking piece 31 is always in contact with the front inner wall of the locking groove 21, which can also achieve locking.

[0062] At 4 o'clock: Combined Fig.16 As shown, at this time, the outer conductor 3 rotates 120° relative to the plastic shell 2, so that the locking piece 31 is at the 4 o'clock position. The rear end face of the locking piece 31 contacts the rear inner wall of the locking groove 21, and the front end face of the locking piece 31 always contacts the front inner wall of the locking groove 21, which can also achieve locking.

[0063] At 5 o'clock: Combined Fig.17 As shown, at this time, the outer conductor 3 rotates 150 degrees relative to the plastic shell 2, so that the locking piece 31 is at the 5 o'clock position. The rear end face of the locking piece 31 contacts the rear inner wall of the locking groove 21, and the front end face of the locking piece 31 always contacts the front inner wall of the locking groove 21, which can also achieve locking.

[0064] At 6 o'clock: Combined Fig.18 As shown, at this time, the outer conductor 3 rotates 180 degrees relative to the plastic shell 2, so that the locking piece 31 is at the 6 o'clock position. The rear end face of the locking piece 31 contacts the rear inner wall of the locking groove 21, and the front end face of the locking piece 31 always contacts the front inner wall of the locking groove 21, which can also achieve locking.

[0065] The states of the locking plate 31 at 7, 8, 9, 10, and 11 o'clock are substantially the same as the states of the locking plate 31 at 5, 4, 3, 2, and 1 o'clock, respectively, and are not described in detail herein.

[0066] From the above, it can be seen that when the outer conductor 3 rotates in the inner hole 20 of the plastic shell 2, the front end face of the locking plate 31 is always in contact with the front inner wall of the locking groove 21, and the rear end face of the locking plate 31 is always in contact with the rear inner wall of the locking groove 21 or the front end face 220 of the elastic locking arm 22, so that 360° locking can be achieved.

[0067] In summary, the utility model replaces the backstop plate as a separate part with the elastic locking arm 22, and the elastic locking arm 22 is integrally connected to the plastic shell 2, and its structure is extremely simple, so as not to increase the number of parts, and the elastic locking arm 22 does not need to be assembled relative to the plastic shell 2, and there is no problem of inconvenient installation and low installation accuracy; in addition, the utility model replaces the two spaced annular bosses 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 end face 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 stopping, and at this time, the elastic locking arm 22 is reset, the front end of the elastic locking arm 22 also presses the outer conductor 3, and the rear end face of the locking piece 31 is pressed and contacted with the front end face 22 of the elastic locking arm 22 to achieve the purpose of backstopping. The purpose is to form an elastic locking structure, so that the outer conductor 3 and the plastic shell 2 form a more stable locking assembly, and the locking effect is better; that is, the outer conductor 3 and the plastic shell 2 form a locking assembly, so that the outer conductor 3 cannot be pushed or pulled relative to the plastic shell 2, and its stability is excellent, so that the locking piece 31 plays a dual function of stopping thrust and stopping retreat, and the locking piece 31 is simpler to make and more efficient than forming two annular bosses spaced apart on the outer conductor, and since there is no need to form two annular bosses spaced apart 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 a specific specification with the inner insulator 4 and the inner conductor 5 arranged inside it, meet the use requirements of the coaxial connector, and ensure product quality.

[0068] 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. All 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 connector elastic locking structure, comprising a plastic shell (2) and an outer conductor (3) passing through an inner hole (20) of the plastic shell (2) and locked and fixed with the plastic shell (2), characterized in that: The outer conductor (3) is formed with a locking piece (31) protruding from the inside to the outside, and the inner wall of the inner hole (20) of the plastic shell (2) is provided with a locking groove (21). The plastic shell (2) is also integrally formed with an elastic locking arm (22) having elastic deformation capability, and the front end of the elastic locking arm (22) extends into the inner hole (20). When the locking piece (31) pushes the elastic locking arm (22) outward and passes over the elastic locking arm (22) to enter the locking groove (21), the front end surface of the locking piece (31) is pressed and contacted with the front inner wall of the locking groove (21), and the front end surface (220) of the elastic locking arm (22) is in contact with the rear end surface of the locking piece (31).

2. The connector elastic locking structure according to claim 1, characterized in that: The front end surface (220) of the elastic locking arm (22) is aligned with the rear inner wall of the locking groove (21) and is on the same vertical plane.

3. The connector elastic locking structure according to claim 1, characterized in that: The lower side surface of the front end of the elastic locking arm (22) is arranged as an arc surface (221), the center of the arc surface (221) is coaxial with the center of the outer conductor (3), and the arc surface (221) presses against and wraps around the outer surface of the outer conductor (3) from the outside to the inside, thereby forming surface contact.

4. The connector elastic locking structure according to claim 3, characterized in that: The elastic locking arm (22) has an introduction groove (222) which is in communication with the inner hole (20) and guides the locking plate (31) to be inserted, and the introduction groove (222) is also butted against the arc surface (221).

5. The connector elastic locking structure according to claim 4, characterized in that: The elastic locking arm (22) is formed with arc-shaped reinforcing ribs (223) on both sides of the introduction groove (222) for reinforcing elasticity.

6. A connector elastic locking structure according to any one of claims 1 to 5, characterized in that: Horizontal air-avoiding grooves (23) are formed between the two sides of the elastic locking arm (22) and the plastic shell (2), and the horizontal air-avoiding grooves (23) also horizontally penetrate the locking groove (21).

7. The connector elastic locking structure according to claim 6, characterized in that: The width of the locking piece (31) is greater than the width of the horizontal avoidance groove (23) in the vertical direction; when the outer conductor (3) rotates in the inner hole (20) of the plastic shell (2), the front end surface of the locking piece (31) is always in contact with the front inner wall of the locking groove (21), and the rear end surface of the locking piece (31) is always in contact with the rear inner wall of the locking groove (21) or the front end surface (220) of the elastic locking arm (22), so as to achieve 360° locking.

8. The connector elastic locking structure according to claim 2, characterized in that: The locking groove (21) is an arc-shaped groove, the front inner wall of the locking groove (21) is an annular inner wall, the rear inner wall of the locking groove (21) is a non-annular inner wall, and the front end surface (220) of the elastic locking arm (22) is located on the upper side of the rear inner wall of the locking groove (21).

9. The connector elastic locking structure according to claim 6, characterized in that: The elastic locking arm (22) comprises an elastic arm (201) integrally connected to the plastic shell (2) and arranged in an inclined manner, and a locking portion (202) formed at the front end of the elastic arm (201); the front end surface of the locking portion (202) contacts the rear end surface of the locking plate (31); the lower side of the locking portion (202) has an arc surface (221), and is in pressing contact with the outer surface of the outer conductor (3) through the arc surface (221).

10. The connector elastic locking structure according to claim 6, characterized in that: A secondary lock seat (24) is also snap-fastened on the plastic shell (2), and the secondary lock seat (24) is also in contact with the elastic lock arm (22); or, the secondary lock seat (24) is located on the upper side of the elastic lock arm (22), and a gap is formed therebetween.

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