CN114678720B

CN114678720B - Electric connector

Info

Publication number: CN114678720B
Application number: CN202210281396.6A
Authority: CN
Inventors: 郑文杰; 陈朋辉; 张启帆; 韩见强; 郭辉
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2023-09-26
Anticipated expiration: 2042-03-21
Also published as: CN114678720A

Abstract

The present disclosure relates to electrical connectors, and particularly to an electrical connector. The electric connector comprises a shell and a locking piece, wherein the shell is provided with a first cavity, a second cavity and a third cavity; the locking piece is provided with a fixing arm, a force receiving arm and a blocking arm, a deformation beam is arranged between the fixing arm and the force receiving arm, and the locking piece is provided with a clamping part; the fixing arm is provided with a primary clamping position and a secondary clamping position, the stress arm is inserted into the second cavity, the second cavity is provided with a convex hull, the stress arm is provided with an avoidance groove for avoiding the convex hull, and the blocking arm is positioned in the third cavity; when the locking piece is in the locking position, the retaining arm is in the secondary clamping position, the convex hull enters the avoidance groove, the deformation beam is restored to the original state so that the retaining arm swings outside the shell, and the opposite-plug part is avoided.

Description

Electric connector

Technical Field

The present disclosure relates to electrical connectors, and particularly to an electrical connector.

Background

In an electrical connector, TPA (terminal position assurance: terminal position retainer) acts to lock the terminals to prevent the terminals from coming out under external forces and causing line outages. The Chinese patent application with the application publication number of CN113991342A discloses a locking structure, which comprises a shell and a locking piece, wherein the shell is provided with a mounting groove, the locking piece is provided with a buckle, and the locking piece is fixed on the shell through the matching of the buckle and the mounting groove; the terminal assembly part is provided with an annular clamping groove, and the locking piece is provided with a clamping part clamped into the annular clamping groove so as to finish secondary locking of the terminal assembly part.

After the locking piece is fixed on the shell, whether the clamping part of the locking piece is clamped into the annular clamping groove of the terminal assembly part cannot be determined, and if the clamping part of the locking piece is not clamped into the annular clamping groove, the terminal assembly part and the corresponding terminal assembly part cannot be stably spliced, so that the connecting effect is affected.

Disclosure of Invention

The application aims to provide an electric connector, which solves the technical problem that whether the clamping part of the locking piece is clamped into the clamping groove of the terminal assembly part or not can not be determined after the locking piece is fixed on the shell in the prior art.

In order to achieve the above object, the technical scheme of the electrical connector of the present application is as follows:

the electric connector comprises a shell and a locking piece, wherein the opposite inserting end of the electric connector is used as the front end, and a first cavity, a second cavity and a third cavity are sequentially arranged on the shell from back to front; the locking piece is sequentially provided with a fixing arm, a force receiving arm and a blocking arm from back to front, a deformation beam is arranged between the fixing arm and the force receiving arm, and a clamping part for being clamped into an annular clamping groove on the terminal component is arranged at the position of the locking piece corresponding to the fixing arm; the fixing arm is inserted into the first cavity, the fixing arm is provided with a primary clamping position and a secondary clamping position in the process of being inserted into the first cavity, the stress arm is inserted into the second cavity, a convex hull is arranged on the front cavity wall of the second cavity, an avoidance groove for avoiding the convex hull is arranged on the front side surface of the stress arm, and the blocking arm is positioned in the third cavity; the retaining member has pre-installation position and locking position in the installation, and when pre-installation position, the holding arm is in a joint position, and the tip of receiving the arm of force is in order to make deformation roof beam take place elastic deformation with convex closure roof-bolck fit to make and block the arm and to the inside swing of casing in order to block to insert to inserting the part, when locking position, the holding arm is in secondary joint position, and the convex closure enters into the recess of dodging of receiving the arm of force, and deformation roof beam is restored to the original state so that block the arm and to the outside swing of casing, and then dodge to inserting the part.

The beneficial effects are that: when the locking piece is in the preassembly position, the fixing arm is in the primary clamping position, the end part of the force receiving arm is in pressing fit with the convex hull so as to enable the deformation beam to elastically deform, and therefore the blocking arm swings towards the inside of the shell to block the insertion of the opposite insertion part, and the error operation insertion of the opposite insertion part is avoided; when the locking position is reached, the fixing arm is positioned at the secondary clamping position, the convex hull enters into the avoidance groove of the force receiving arm, the deformation beam is restored to the original state so that the blocking arm swings towards the outside of the shell, and further the opposite-plug part is avoided, so that the opposite-plug part can be inserted into the shell, and the opposite-plug part and the terminal part are connected.

As a further improvement, a positioning hole is arranged between the fixing arm and the stress arm on the locking piece, and a positioning column matched with the positioning hole in a positioning way is arranged between the first cavity and the second cavity on the shell.

The beneficial effects are that: the locking piece is quickly and accurately installed on the shell through the positioning matching of the positioning column and the positioning hole.

As a further improvement, the positioning posts project beyond the locking member arrangement in the pre-installation position.

The beneficial effects are that: by the design, the positioning column plays a certain role in protecting the locking piece.

As a further improvement, the surface of the convex hull is provided with a preassembling positioning groove for clamping the groove edge of the avoidance groove on the force receiving arm in preassembling position.

The beneficial effects are that: the design is that the preassembly positioning groove can be clamped with the groove edge of the avoidance groove on the force receiving arm and is matched with the primary clamping position of the fixing arm, so that the stability of the locking piece in preassembly position is ensured.

As a further improvement, the blocking arm comprises a plate body and a blocking ridge on the inner side of the plate body.

The beneficial effects are that: by the design, the thickness of the plate body can be reduced.

As a further improvement, two blocking ribs are arranged at intervals and extend along the front-rear direction, guide ribs extending along the front-rear direction are arranged at the positions of the third cavity on the shell, and the guide ribs are used for being matched with the corresponding blocking ribs to guide the blocking arms to enter the third cavity.

As a further improvement, the front end face of the blocking arm is an inclined face inclined from back to front and from outside to inside in the preassembly position.

The beneficial effects are that: when the locking piece is in the preassembly position, if the inserting part is inserted into the shell, the blocking arm can further move towards the inside of the shell under the action of the inclined surface, so that the inserting part and the terminal part cannot be connected in an inserting mode.

As a further improvement, the outer side of the fixing arm is provided with a clamping protrusion, the cavity wall of the first cavity is provided with a primary clamping groove and a secondary clamping groove, the clamping protrusion is matched with the primary clamping groove in a clamping manner when the fixing arm is positioned at the primary clamping position, and the clamping protrusion is matched with the secondary clamping groove in a clamping manner when the fixing arm is positioned at the secondary clamping position.

The beneficial effects are that: because the size of the holding arm is relatively small, compared with the clamping groove, the clamping protrusion is arranged on the holding arm, so that the strength of the holding arm can be ensured.

As a further improvement, the primary clamping groove and the secondary clamping groove are through grooves.

The beneficial effects are that: by the design, whether the clamping protrusion and the corresponding clamping groove are clamped in place or not is convenient to observe, and the clamping protrusion is pushed by a tool penetrating through the through groove so as to be beneficial to disassembling of the locking piece.

As a further improvement, a thinning groove is arranged on the outer side face of the locking piece corresponding to the position of the deformation beam.

The beneficial effects are that: the design is in this way, except the deformation beam, the thickness of other positions of the locking piece is relatively large, so that the integral strength of the locking piece is ensured, and the deformation beam is elastically deformed.

Drawings

FIG. 1 is a schematic view of an electrical connector according to the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the housing of FIG. 2;

FIG. 4 is a schematic view of the locking member of FIG. 2;

FIG. 5 is a schematic view of the structure of the locking member prior to its installation in the housing;

FIG. 6 is a schematic view of the internal structure of FIG. 5;

FIG. 7 is a side view of FIG. 5;

FIG. 8 is a schematic view of the locking member pre-assembled to the housing;

FIG. 9 is a schematic view of the internal structure of FIG. 8;

FIG. 10 is a side view of FIG. 8;

FIG. 11 is a schematic view of the locking member fully enclosed within the housing;

FIG. 12 is a schematic view of the internal structure of FIG. 11;

FIG. 13 is a side view of FIG. 11;

in the figure: 11. a housing; 12. a terminal member; 13. a locking member; 14. positioning columns; 15. an annular clamping groove; 16. a primary clamping groove; 17. a secondary clamping groove; 18. a first cavity; 19. a second cavity; 20. convex hulls; 21. a third cavity; 22. guiding the convex edges; 23. avoiding the groove; 24. a force receiving arm; 25. a holding arm; 26. positioning holes; 27. a clamping part; 28. the clamping bulge; 29. thinning the groove; 30. a deformation beam; 31. reinforcing ribs; 32. a blocking arm; 33. blocking the convex edge; 34. preassembling a positioning groove.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the application, i.e., the embodiments described are merely some, but not all, of the embodiments of the application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationship shown in the drawings, and are merely for convenience of description of the application, and do not denote that the device or component in question must have a particular orientation, and thus should not be construed as limiting the application.

The features and capabilities of the present application are described in further detail below in connection with the examples.

Example 1 of the electrical connector of the present application:

as shown in fig. 1 and 2, the electrical connector includes a housing 11 and locking members 13, the locking members 13 are provided in two, and the two locking members 13 are identical in structure and symmetrically arranged at both sides of the housing 11.

With the opposite insertion end of the electrical connector as the front end, as shown in fig. 3, a first cavity 18, a second cavity 19 and a third cavity 21 are sequentially arranged on the housing 11 from back to front, the first cavity 18 and the second cavity 19 are both U-shaped cavities, and the third cavity 21 is a rectangular cavity.

As shown in fig. 4, the retaining arm 25, the force arm 24 and the blocking arm 32 are sequentially disposed on the locking member 13 from back to front, and the locking portion 27 for being locked into the annular locking groove 15 on the terminal component 12 is disposed on the locking member 13 at the position corresponding to the retaining arm 25. Wherein the holding arm 25 and the force arm 24 are each arranged perpendicular to the housing 11, and the blocking arm 32 is arranged parallel to the housing 11.

In this embodiment, a deformation beam 30 is disposed between the holding arm 25 and the force arm 24, and a thinning groove 29 is disposed on the outer side surface of the locking member 13 corresponding to the deformation beam 30, so that the thickness of other positions of the locking member 13 except the deformation beam 30 is relatively large, so as to ensure the overall strength of the locking member 13, and meanwhile, the deformation beam 30 is elastically deformed. In other embodiments, the outer side of the locking member is not provided with a thinning groove, so that the whole locking member can be designed thinner in order to enable the deformation beam to have a certain elastic deformation capability.

In this embodiment, two holding arms 25 are provided, the two holding arms 25 are arranged in parallel and are inserted into the first cavity 18, the holding arms 25 have a primary clamping position and a secondary clamping position in the process of inserting into the first cavity 18, and the clamping portion 27 on the locking member 13 is completely clamped into the annular clamping groove 15 in the secondary clamping position. Specifically, as shown in fig. 2 and 4, a clamping protrusion 28 is disposed on the outer side of the end portion of the holding arm 25, a primary clamping groove 16 and a secondary clamping groove 17 are disposed on the cavity wall of the first cavity 18, the clamping protrusion 28 is in clamping fit with the primary clamping groove 16 when the holding arm 25 is in the primary clamping position, and the clamping protrusion 28 is in clamping fit with the secondary clamping groove 17 when the holding arm 25 is in the secondary clamping position.

In this embodiment, the primary slot 16 and the secondary slot 17 are through slots, so that it is convenient to observe whether the clamping protrusion 28 and the corresponding slot are clamped in place, and push the clamping protrusion 28 by a tool penetrating through the through slots, so as to facilitate the detachment of the locking member. In other embodiments, the primary card slot and the secondary card slot are both blind slots.

As shown in fig. 3 and 4, two force receiving arms 24 are provided, and the two force receiving arms 24 are arranged in parallel and are inserted into the second cavity 19. The front cavity wall of the second cavity 19 is provided with a convex hull 20, and the front side surface of the force receiving arm 24 is provided with an avoidance groove 23 for avoiding the convex hull 20.

As shown in fig. 6, the surface of the convex hull 20 is provided with a preassembly positioning groove 34, and the preassembly positioning groove 34 is used for clamping a groove edge of the force receiving arm 24, which is avoided from the groove 23, and is matched with a primary clamping position of the holding arm 25 so as to ensure the stability of the locking piece 13 in the preassembly position. In other embodiments, the preassembly positioning groove is not provided, and the locking piece is fixed on the shell only by the clamping protrusion on the holding arm during preassembly.

In this embodiment, the blocking arm 32 is located in the third cavity 21, the blocking arm 32 includes a plate body and blocking ribs 33 located inside the plate body, the blocking ribs 33 are two, the two blocking ribs 33 are arranged at intervals and all extend along the front-rear direction, the guiding ribs 22 extending along the front-rear direction are arranged on the housing 11 at the position of the third cavity 21, and the guiding ribs 22 are used for being matched with the corresponding blocking ribs 33 to guide the blocking arm 32 to enter the third cavity 21. Wherein, the rear end of the plate body is provided with a reinforcing rib 31 to ensure the strength of the plate body.

As shown in fig. 4, the front end surface of the blocking arm 32 is an inclined surface which is inclined from the back to the front and from the outside to the inside in the preassembly position, so that if the locking member 13 is inserted into the housing 11 in the preassembly position, the blocking arm 32 is further moved toward the inside of the housing 11 by the action of the inclined surface, so that the insertion connection between the insertion member and the terminal member cannot be completed. In other embodiments, the front face of the blocking arm is parallel to the front face of the housing in the pre-loaded position.

As shown in fig. 3 and 4, a positioning hole 26 is formed between the holding arm 25 and the force arm 24 on the locking member 13, and a positioning post 14 matched with the positioning hole 26 in a positioning manner is formed between the first cavity 18 and the second cavity 19 on the housing 11 so as to position the locking member 13 when the locking member 13 is installed.

In this embodiment, the positioning post 14 protrudes from the locking member 13 in the pre-assembled position, so that the positioning post 14 protects the locking member 13 when an external force is applied. In other embodiments, the positioning posts may not protrude from the locking member arrangement in the pre-installed position, the positioning posts only serving as a positioning function.

In this embodiment, the locking member 13 has a pre-load position and a locking position during installation. Before the locking member 13 is preloaded, as shown in fig. 5 to 7, the deformation beam 30 of the locking member 13 is not deformed and the blocking arm 32 is in a horizontal state. As shown in fig. 8 to 10, in the preassembly position, the clamping protrusion 28 on the holding arm 25 is in clamping fit with the primary clamping groove 16, that is, the holding arm 25 is in the primary clamping position, and the end of the stress arm 24 is in pressing fit with the convex hull 20 to elastically deform the deformation beam 30, so that the blocking arm 32 swings towards the inside of the housing 11 to block insertion of the opposite insertion component, that is, the blocking arm 32 is in an inclined state, and meanwhile, the groove edge of the stress arm 24, which is avoided from the groove 23, is clamped into the preassembly positioning groove 34, so that stability of the locking member 13 in the preassembly position is ensured. As shown in fig. 11 to 13, in the locked position, the locking protrusion 28 on the holding arm 25 is locked with the secondary locking groove 17, that is, the holding arm 25 is in the secondary locking position, the convex hull 20 enters the avoiding groove 23 of the force arm 24, the deformation beam 30 is restored to the original shape so as to enable the blocking arm 32 to swing towards the outside of the housing 11, and at this time, the blocking arm 32 is restored to the horizontal state again so as to avoid the opposite insertion component.

Example 2 of the electrical connector of the present application:

the difference between the embodiment and the embodiment 1 is that in the embodiment 1, a positioning hole is provided between the holding arm and the force arm on the locking member, and a positioning column matched with the positioning hole is provided between the first cavity and the second cavity on the housing. In this embodiment, a positioning column is disposed between the holding arm and the force arm on the locking member, and a positioning hole matched with the positioning column in positioning is disposed between the first cavity and the second cavity on the housing.

Example 3 of the electrical connector of the present application:

this embodiment differs from embodiment 1 in that in embodiment 1, the blocking arm includes a plate body and a blocking ridge on the inner side of the plate body. In this embodiment, the blocking arm only includes a plate body, and the thickness of the plate body is relatively large.

Example 4 of the electrical connector of the present application:

the present embodiment differs from embodiment 1 in that in embodiment 1, two barrier ribs are provided, which are arranged at intervals and each extend in the front-rear direction. In this embodiment, the blocking rib is provided with one, and the blocking rib is provided at the front end of the plate body and extends in the width direction of the plate body.

Example 5 of the electrical connector of the present application:

the difference between the present embodiment and embodiment 1 is that in embodiment 1, the outer side of the holding arm is provided with a clamping protrusion, and the cavity wall of the first cavity is provided with a primary clamping groove and a secondary clamping groove. In this embodiment, the outer side of the holding arm is provided with a primary clamping groove and a secondary clamping groove, and the cavity wall of the first cavity is provided with a clamping protrusion.

The above description is only a preferred embodiment of the present application, and the patent protection scope of the present application is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present application should be included in the protection scope of the present application.

Claims

1. The electric connector comprises a shell (11) and a locking piece (13) and is characterized in that a pair of inserting ends of the electric connector are used as front ends, and a first cavity (18), a second cavity (19) and a third cavity (21) are sequentially arranged on the shell (11) from back to front; a retaining arm (25), a stress arm (24) and a blocking arm (32) are sequentially arranged on the locking piece (13) from back to front, a deformation beam (30) is arranged between the retaining arm (25) and the stress arm (24), and a clamping part (27) for being clamped into an annular clamping groove (15) on the terminal component (12) is arranged at the position of the locking piece (13) corresponding to the retaining arm (25); the fixing arm (25) is inserted into the first cavity (18), the fixing arm (25) is provided with a primary clamping position and a secondary clamping position in the process of being inserted into the first cavity (18), the stress arm (24) is inserted into the second cavity (19), the front cavity wall of the second cavity (19) is provided with a convex hull (20), the front side surface of the stress arm (24) is provided with an avoidance groove (23) for avoiding the convex hull (20), and the blocking arm (32) is positioned in the third cavity (21); the locking piece (13) is provided with a preassembling position and a locking position in the installation process, when the locking piece is in the preassembling position, the fixing arm (25) is positioned at a primary clamping position, the end part of the force receiving arm (24) is in propping fit with the convex hull (20) to enable the deformation beam (30) to elastically deform, so that the blocking arm (32) swings towards the inside of the shell (11) to block the insertion part from being inserted, when the locking piece is in the locking position, the fixing arm (25) is positioned at a secondary clamping position, the convex hull (20) enters the avoidance groove (23) of the force receiving arm (24), and the deformation beam (30) is restored to enable the blocking arm (32) to swing towards the outside of the shell (11) to avoid the insertion part.

2. The electrical connector according to claim 1, wherein the locking member (13) is provided with a positioning hole (26) between the holding arm (25) and the force arm (24), and the housing (11) is provided with a positioning post (14) positioned and matched with the positioning hole (26) between the first cavity (18) and the second cavity (19).

3. An electrical connector according to claim 2, wherein the positioning posts (14) are arranged protruding the locking member (13) in the pre-assembled position.

4. An electrical connector according to claim 1, 2 or 3, wherein the surface of the protruding envelope (20) is provided with pre-load positioning grooves (34) for the engagement of the edges of the grooves (23) of the force arm (24) during pre-load position.

5. An electrical connector according to claim 1 or 2 or 3, wherein the blocking arm (32) comprises a plate body and a blocking ridge (33) inside the plate body.

6. The electrical connector according to claim 5, wherein two blocking ribs (33) are provided, the two blocking ribs (33) are arranged at intervals and each extend in the front-rear direction, a guiding rib (22) extending in the front-rear direction is provided on the housing (11) at a position where the third cavity (21) is located, and the guiding rib (22) is used for being matched with the corresponding blocking rib (33) to guide the blocking arm (32) into the third cavity (21).

7. An electrical connector according to claim 1, 2 or 3, wherein the front end face of the blocking arm (32) in the pre-mounted position is an inclined face inclined from rear to front, from outside to inside.

8. An electrical connector according to claim 1, 2 or 3, wherein the outer side of the holding arm (25) is provided with a clamping protrusion (28), the cavity wall of the first cavity (18) is provided with a primary clamping groove (16) and a secondary clamping groove (17), the clamping protrusion (28) is matched with the primary clamping groove (16) in a clamping manner when the holding arm (25) is in a primary clamping position, and the clamping protrusion (28) is matched with the secondary clamping groove (17) in a clamping manner when the holding arm (25) is in a secondary clamping position.

9. The electrical connector of claim 8, wherein the primary (16) and secondary (17) card slots are through slots.

10. An electrical connector according to claim 1, 2 or 3, wherein the locking member (13) is provided with a thinned recess (29) on its outer side in correspondence with the deformed beam (30).