CN219018029U - Connector outer shell, plug connector and corresponding electric connection kit - Google Patents

Abstract

The utility model relates to a connector outer shell, a plug connector and a corresponding electric connection sleeve. According to the connector outer shell, the outer shell comprises an operation surface close to one side of a plug end, a latch spring arm is arranged on the operation surface, the latch spring arm comprises a locking section close to the plug end and a pressing unlocking section far away from the plug end, the latch spring arm is positioned on the outer shell through a supporting structure and can generate elastic deformation for lifting the locking section under the action of external force applied to the pressing unlocking section, unlocking of the connector outer shell and a matched connecting device is achieved through the elastic deformation, one end of the supporting structure connected with the latch spring arm comprises a plurality of supporting legs connected to the latch spring arm respectively, the supporting structure at least comprises a first supporting leg and a second supporting leg, the first supporting leg and the second supporting leg extend at different angles and are connected to the latch spring arm, and an included angle formed by the first supporting leg and the second supporting leg is 55-135 degrees.

Description

Connector outer shell, plug connector and corresponding electric connection kit

Technical Field

The present utility model relates to an outer housing for an electrical connector having a latch structure that provides enhanced retention after insertion into one another with an outer housing of a mating connector.

Such a connector housing design may be used to manufacture miniaturized electrical connectors suitable for various applications, such as in the field of photovoltaic-based energy storage systems.

Background

Electronic connectors (electrical connectors) are widely used in a variety of industrial products including vehicles for establishing electrical power and signal connections. Electronic connectors typically include a plug connector and a mating receptacle connector. A plug connector generally has a connector housing in which an electrical connection terminal structure is mountable, the rear end of the housing having an opening for incoming wires, the mating end of the housing being adapted to mate with the housing of a mating connector. The mating connector may be a receptacle connector, such as a board-end receptacle connector mounted on a board, or a wire-end receptacle connector mounted at the end of another wire harness.

In general, a latch structure capable of being elastically deformed is provided on an outer housing of a plug connector, and when the outer housing of a receptacle connector is plugged with the outer housing of the plug connector, the latch structure on the plug connector and a corresponding structure on the receptacle connector may form physical interference, thereby locking the plug connector and the receptacle connector together. When the lock needs to be released, the lock catch structure is elastically deformed to a certain extent by pressing or other operations, so that the physical interference is released. Such elastically deformable latch structures are known in some applications as "primary latches".

Fig. 4A shows a technically possible outer housing of a plug connector, the primary lock of which is realized by an elastically deformable latching structure 800A. Fig. 4B shows another technically possible outer housing of a plug connector, the primary lock of which is realized by another form of elastically deformable catch structure 800B. Because the outer shell of the connector is made of engineering plastic, both the latch structure 800A and the latch structure 800B will eventually deform under a sufficient pulling force, resulting in the release of the primary lock between the plug connector and the receptacle connector. The maximum pullout force that the connector can withstand before unlocking can be characterized as the retention force.

It will be appreciated that the retention provided by the miniaturized connector's primary lock will generally decrease with other design conditions. Thus, the miniaturized design of connectors is susceptible to retention challenges. Accordingly, it is desirable to have a connector outer housing design with enhanced retention to address such challenges.

Secondary locks (secondary locks) are often used to enhance retention of the connector. A typical secondary lock is a component known as a CPA, and operates on the principle of limiting the space for elastic deformation of the primary lock structure, thereby providing additional interference with the primary lock unlocking action. While secondary locks are an option to enhance the pullout resistance of miniaturized connectors, in some instances it is desirable to reduce the use of accessories such as secondary locks, simply relying on the primary shackle to provide adequate retention. In other applications, it is desirable to use a secondary lock as an optional accessory to provide products with different pull-out resistance depending on customer needs.

Disclosure of Invention

The present utility model aims to provide a novel connector outer housing having a novel latch structure that enables higher retention than existing designs.

The utility model also describes an optional secondary lock that can be used with the connector outer housing described above.

According to one aspect of the present utility model, there is provided a connector housing comprising a first opening defining a tail end for incoming wires and a second opening defining a mating end for mating with a mating connector, characterized in that: the outer shell comprises an operation surface close to one side of the plugging end, a main lock structure is arranged on the operation surface, the main lock structure comprises a lock catch spring arm, the lock catch spring arm comprises a locking section close to the plugging end and a pressing unlocking section far away from the plugging end, the lock catch spring arm is positioned on the outer shell through a supporting structure and can generate elastic deformation which enables the locking section to be lifted under the action of external force applied to the pressing unlocking section, unlocking of the connector outer shell and a matched connecting device is achieved through the elastic deformation, one end of the supporting structure connected with the lock catch spring arm comprises a plurality of support legs which are connected to the lock catch spring arm respectively, each support leg at least comprises a first support leg and a second support leg, the first support leg and the second support leg extend at different angles and are connected to the lock catch spring arm, and an included angle formed by the first support leg and the second support leg is 55-135 degrees.

In the connector shell, the longitudinal section of the supporting structure comprises a main arc section, one end of the main arc section is connected to the operation surface, a first supporting leg is formed at the other end of the main arc section, the longitudinal section of the supporting structure further comprises a second supporting leg which is branched from the main arc section, and the first supporting leg and the second supporting leg are respectively connected to the locking elastic arms.

In the connector outer housing, the second leg diverges from the inside of the main arc section.

In the connector outer shell, the tail end of the locking arm of the locking elastic arm is provided with a clamping nose structure, and the clamping nose structure is used for being matched with a corresponding clamping structure on the opposite connector outer shell to realize locking.

In the connector outer shell, the corresponding clamping structure on the outer shell of the mating connector is a hanging table structure, and the locking between the clamping nose structure and the hanging table structure can be released by the external force applied to the pressing unlocking section.

In the connector shell, the auxiliary lock sliding block can be arranged on the connector shell, and an included angle formed by the first support leg and the second support leg is 70-120 degrees.

According to one aspect of the present utility model, there is provided a connector housing comprising a first opening defining a tail end for incoming wires and a second opening defining a mating end for mating with a mating connector, further comprising: the outer shell comprises an operation surface close to one side of the plug end, a lock catch spring arm is arranged on the operation surface, and the lock catch spring arm comprises a locking section close to the plug end and a pressing unlocking section far away from the plug end; the lock catch elastic arm is positioned on the outer shell through a supporting structure, can generate elastic deformation for lifting the locking section under the action of external force applied to the pressing unlocking section, and realizes the unlocking of the connector outer shell and the matched connecting device through the elastic deformation; and a secondary lock slide block (CPA) which can be mounted on the operation surface of the outer shell and slides between a pre-lock position and a final lock position, and when the secondary lock slide block slides to the final lock position, the secondary lock slide block is positioned below the pressing unlocking section of the lock catch spring arm so as to interfere the movement stroke of the pressing unlocking section pressed downwards.

In the connector outer shell, the bottom of the auxiliary lock slide block is provided with the positioning protrusion, the operation surface of the outer shell is provided with the auxiliary lock slide block matching installation structure, the auxiliary lock slide block matching installation structure comprises one or more locking grooves, a pre-lock notch and a final lock notch are arranged in each locking groove, and the auxiliary lock slide block can be positioned in the pre-lock notch or the final lock notch and can slide between the pre-lock notch and the final lock notch by overcoming resistance.

In the connector outer shell, the auxiliary lock slide block matching installation structure further comprises a stop groove, and a stop protrusion is further arranged at the bottom of the auxiliary lock slide block and can be positioned in the stop groove to limit the auxiliary lock slide block to slide and withdraw;

the two sides of the operation surface of the outer shell are respectively provided with side walls, each side wall is provided with a limit guide protrusion, two ends of the auxiliary lock slide block are respectively provided with a slide rail protrusion, and the limit guide protrusions on the side walls and the operation surface together define a slide groove matched with the slide rail protrusions of the auxiliary lock slide block.

According to one aspect of the present utility model, a plug connector is provided comprising a connector housing as described above.

The plug connector is a right-angle connector, a first terminal with a crown spring arranged inside and a second terminal used for crimping a cable are arranged in an outer shell of the right-angle connector, a metal ring is arranged at the tail end of the second terminal, and the first terminal is cylindrical and can be assembled into the metal ring.

According to one aspect of the present utility model, an electrical connection kit is provided, comprising a plug connector as described above, and a mating receptacle connector having current pin terminals disposed therein for making electrical connection with a crown spring in the plug connector.

The utility model can realize the following beneficial effects:

1. the special design of the support structure of the latch spring arm as the primary lock device allows the connector housing to provide good retention without the use of a secondary lock.

2. Optional secondary locks (CPAs) may further enhance retention and may also increase product configuration flexibility.

Drawings

Fig. 1A shows an exploded schematic view of an electrical connection kit according to an embodiment of the utility model.

Fig. 1B shows a schematic view of the assembled state of the electrical connection kit shown in fig. 1A.

Fig. 2 shows a side view and a partial sectional view of a plug connector and a receptacle connector in an assembled state according to an embodiment of the present utility model.

Fig. 3A shows a side view of a plug connector according to an embodiment of the utility model.

Fig. 3B shows a partial enlarged view of the support structure of the latch spring arm of fig. 3A.

Fig. 4A shows an outer housing of a plug connector for comparison with an embodiment of the present utility model.

Fig. 4B shows an outer housing of a plug connector for comparison with an embodiment of the present utility model.

Fig. 4C shows an outer housing of a plug connector for comparison with an embodiment of the present utility model.

Fig. 5A shows an exploded view of one way of application of the plug connector according to an embodiment of the utility model.

Fig. 5B shows an exploded view of a receptacle connector corresponding to the application of the plug connector of fig. 5A.

Fig. 6A is a partial enlarged view showing a sub-lock slider portion according to an embodiment of the present utility model.

Fig. 6B shows a schematic view of the secondary lock slide of fig. 6A in a pre-lock position.

Fig. 6C shows a comparison of the secondary lock slide of fig. 6A in the pre-lock position and the final-lock position.

Fig. 7A shows a bottom view of a secondary lock slide in accordance with an embodiment of the utility model.

Fig. 7B illustrates a secondary lock slide mating mounting structure on a plug connector according to an embodiment of the utility model.

Fig. 7C illustrates an assembly relationship of a secondary lock slide and a secondary lock slide mating mounting structure according to an embodiment of the utility model.

Part of the reference numerals:

a 100 plug connector; 120 operation surface; 125 pair lock slide block matching installation structure; 130 locking grooves; 131 a pre-lock notch; 132 end lock notches; a 180 limiting block; 200 socket connector; 220 hanging table structure; 300 secondary lock slide blocks; a 310 substrate; 320 sidewalls; 330 ramp; 340 sliding rail bulges; 350 positioning protrusions; 390 stop tab; 395 retaining groove; 400 latch spring arms; 410 locking section; 415 clip nose; 420 pressing the unlock section; 440a support structure; 440A first leg; 440B second leg; 460 lock-in interference; 510 a plug connector housing; 520 crown spring; 541 a first terminal; 542 a second terminal; 551 sealing ring; 553 cable seal ring; 554 glans; 555 cable nut; 560 socket housing; 561 gasket; 562 screws; 570 current pin terminals; 800A latch structure; 800B latch structure; 800C latch structure.

Detailed Description

In the following description, the present utility model is described with reference to the embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details, or with other alternative and/or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of various embodiments of the utility model. Similarly, for purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the embodiments of the utility model. However, the utility model may be practiced without the specific details. Furthermore, it should be understood that the embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

Fig. 1A shows an exploded schematic view of an electrical connection kit according to an embodiment of the utility model. Fig. 1B shows a schematic view of the assembled state of the electrical connection kit shown in fig. 1A. The electrical connection kit shown in fig. 1A includes a plug connector 100 and a receptacle connector 200. A latch spring arm 400 is provided on one face of the outer housing of the plug connector 100 as a primary lock structure (primary lock) that locks the plug connector 100 and the receptacle connector 200 to each other. The user can unlock the main lock by pressing the latch spring arm 400. In this application, unless otherwise indicated, the surface of the plug connector 100 on which the latch spring arm 400 is located is referred to as the operation surface 120. The operating surface 120 is typically located on the side near the mating end. In some implementations, the electrical connection kit shown in fig. 1A may also include a secondary lock slide 300 that is an accessory for the plug connector 100. As shown in fig. 1B, the housing of the plug connector 100 and the housing of the receptacle connector 200 may be brought into a mating relationship such that mating terminals (not shown) mounted within the two connectors are brought into an electrical mating relationship. The secondary lock slider 300 may be fitted on the operating face 120 of the plug connector 100 and under the latch spring arm 400 in the locked state, thereby preventing the latch spring arm 400 of the plug connector 100 from being deformed by pressing. The secondary lock slide 300 thus has the effect of reinforcing the retention of the electrical connection kit.

Fig. 2 shows a side view and a partial sectional view of the plug connector 100 and the receptacle connector 200 in an assembled state according to an embodiment of the present utility model. As shown in fig. 2, the outer housing of the plug connector 100 in the form of a right-angle connector includes a rear end (opening on the right in the drawing) for incoming wires and a mating end (opening on the bottom in the drawing) for mating with a mating connector. The latch spring arm 400 is provided on the operating surface 120 of the outer housing of the plug connector 100. In the partial cross-sectional view shown in fig. 2, the latch spring arm 400 is seen to have a body comprising a locking section 410 near the mating end and a push unlocking section 420 remote from the mating end, the body of the latch spring arm 400 being positioned on the outer housing of the plug connector 100 by a support structure 440. The body of the latch spring arm 400 and the support structure 440 together form an elastically deformable main locking structure that is elastically deformed by an external force (e.g., a downward pressing force) applied to the pressing unlocking section 420, so that the locking section 410 is lifted, thereby achieving the effect of unlocking the main lock.

Fig. 3A shows a side view of a plug connector according to an embodiment of the utility model, and fig. 3B shows a partial enlarged view of the support structure of the latch spring arm in fig. 3A. In connection with fig. 2 and 3B, it can be seen that the support structure 440 is connected to the body of the latch arm 400 by a plurality of connections. In particular, the support structure 440 may include a first leg 440A and a second leg 440B, each of which is connected to the body of the latch spring arm 400. The first leg 440A and the second leg 440B form a bifurcated support structure, i.e., the two legs extend at different angles and are connected to the latch spring arm 400. In combination with the longitudinal section shown in fig. 2, the supporting structure 440 may include a main arc section, one end of the main arc section is connected to the operation surface 120, the other end forms a first leg 440A, the supporting structure 440 further includes a second leg 440B branching from the inner side of the main arc section, and the first leg 440A and the second leg 440B are respectively connected to the body of the elastic locking arm 400.

The range of values of the included angle formed by the first leg 440A and the second leg 440B should not be construed as limiting the underlying concepts of the present utility model. In some embodiments, the included angle may range in value from 55 ° to 135 °, or more preferably, the angle may range in value from 70 ° to 120 °.

With further reference to fig. 2, a catch structure 415 is provided at the end of the locking section 410 of the latch arm 400. Without the application of force to latch spring arm 400, the catch structures 415 are able to mate with corresponding catch structures on the outer housing of the mating receptacle connector 200 (locking interference 460 in fig. 2) to achieve locking. In fig. 2, the snap-fit structure on the receptacle connector 200 is shown as a stand structure 220. When a pressing force is applied to the pressing unlocking section 420 of the latch arm 400, the connection portion of the latch arm 400 and the supporting structure 440 is elastically deformed, and the locking section 410 is lifted up, thereby releasing the lock between the plug connector 100 and the receptacle connector 200.

Simulation data shows that under the condition that simulation conditions are basically consistent, the latch structure 800A in the form shown in fig. 4A can achieve a dry latch retention of 69N without using an auxiliary lock such as CPA, the latch structure 800B in the form shown in fig. 4B can achieve a dry latch retention of 239N without using an auxiliary lock such as CPA, and the latch structure 800C in the form shown in fig. 4C can achieve a dry latch retention of 230N and a wet latch retention of 133N without using an auxiliary lock such as CPA. While the latch structure of the embodiments of the present application shown in fig. 2 and 3A-3B according to the embodiments of the present application can achieve a dry latch retention of over 300N and a wet latch retention of over 223N without using a secondary latch such as CPA. The latch structure of the embodiments of the present application can thus provide good retention on miniaturized connectors and achieve more adequate retention without the use of a secondary lock.

Fig. 5A shows an exploded view of one way of application of the plug connector according to an embodiment of the utility model. As shown in fig. 5A, a crown spring terminal, which is formed of a first terminal 541 and a second terminal 542, may be mounted within a plug connector housing 510 of a form substantially identical to that shown in fig. 1A-1B. The first terminal 541 has a hollow cylindrical shape, and the crown spring 520 is mounted therein. One end of the second terminal 542 is a hollow structure for pressing wires, the other end is provided with a metal ring structure, and the barrel structure of the first terminal 541 can be assembled into the metal ring, so that 90-degree steering between the wire inlet direction and the plugging direction is realized.

In the scenario shown in fig. 5A, crown spring 520 should be considered a crown spring in accordance with techniques known in the art, and may be used, for example, in accordance with the techniques described in CN 203423290U. A secondary lock (CPA) 530 in the form of that shown in fig. 7A-7C may optionally be provided to enhance retention. However, in some applications, a plug connector that does not include CPA530 may be sufficient, which may be advantageous for a reasonable cost reduction.

By way of example and not limitation, a sealing ring 551 may be provided at the mating end of the plug connector housing 510. At the incoming end of the plug connector housing 510, an O-ring, a pair of cable seal rings 553, a glan 554, and a cable nut 555 may be provided in sequence.

Fig. 5B shows an exploded view of a receptacle connector corresponding to the application of the plug connector of fig. 5A. The illustrated receptacle connector may have a receptacle housing 560 and a mating gasket 561. The current pin terminals 570 are used to make electrical connection with the crown spring 520 within the plug connector housing 510 shown in fig. 5A. The end of the current pin terminal 570 may be fitted with a finger cap 571 as needed. Screws 562 or other fasteners may be used to mount the socket housing 560 to the plate.

In the above embodiments, the construction of the latch spring arm in its outer housing was described based on the plug connector 100. However, it is understood that the latch spring arms may be configured on the outer housing of the receptacle connector. It will also be appreciated that the latch spring arm may be constructed on any wire end connector housing or board end connector housing. Furthermore, the protection of the present application should be applied to any electrical connector, as long as the outer housing of such an electrical connector adopts the configuration of the latch spring arm as the primary locking device proposed in the present application. Furthermore, the protection of the present application should be applicable to any electrical connection kit, as long as the outer housing of the electrical connector in such an electrical connection kit assumes the configuration of the latch spring arm as the primary locking means proposed in the present application.

In the embodiment shown in the drawings of the present utility model, the number of terminal bits of the plug is 1 bit (1-way), so that the plug is suitable for high current connection applications. It will be appreciated that the number of terminal bits may be multi-bit and that the size and mating form of the terminals may be a variety of combinations, as desired for the application, and should not be construed as limiting the utility model.

Embodiments relating to secondary lock sliders (sometimes referred to in the art as CPAs) are described below in connection with FIGS. 6A-6C and FIGS. 7A-7C. It should be understood that the design of the secondary lock slide may not constitute any limitation on the shackle spring arm as the primary locking means presented in this application.

Fig. 6A is a partially enlarged view showing a sub-lock slider portion according to the present utility model, fig. 6B shows a schematic view of the sub-lock slider in fig. 6A in a pre-lock position, and fig. 6C shows a comparative view of the sub-lock slider in fig. 6A in a pre-lock position and a final-lock position. Fig. 7A shows a bottom view of a secondary lock slide in accordance with an embodiment of the utility model. Fig. 7B illustrates a secondary lock slide mating mounting structure on a plug connector according to an embodiment of the utility model. Fig. 7C illustrates an assembly relationship of a secondary lock slide and a secondary lock slide mating mounting structure according to an embodiment of the utility model.

The secondary lock slide 300, as shown in fig. 1A, 1B and 2, is a separate piece from the outer housing body of the plug connector 100, which is mountable on the outer housing body of the plug connector 100. As shown in fig. 6A, the sub-lock slider 300 is configured to include a bottom surface 310, side walls 320 are provided at both ends of the bottom surface 310, a slope 330 is provided at the rear end of the bottom surface 310, and a slide rail protrusion 340 is provided at the outer end of the side walls 320. The rail protrusion 340 may take on a suitable shape to mate with the mounting slot, such as the L-shape of the rail protrusion 340 in FIG. 6A.

A positioning protrusion structure may be provided at the bottom side of the sub-lock slider 300. Correspondingly, a secondary lock slider mating mounting structure 125 may be provided on the operating face 120 of the plug connector 100. As shown in fig. 7C, the secondary lock slide mating mounting structure 125 may include a left-right two locking grooves 130, each locking groove 130 having a pre-lock notch 131 and a final-lock notch 132 disposed therein. The positioning protrusion 350 at the bottom of the sub-lock slider 300 may be caught in the pre-lock recess 131 in the pre-lock position and caught in the final-lock recess 132 in the final-lock position, and the positioning protrusion 350 may be slid between the pre-lock recess 131 and the final-lock recess 132 by overcoming a certain resistance. Referring to fig. 6B and 6C, when the secondary lock slider 300 is in the pre-lock position, the bottom surface 310 of the secondary lock slider 300 avoids the unlocking arm 420 and thus does not physically interfere with the travel of the unlocking arm 420 after it is pressed. When the secondary lock slide 300 is slid to the final lock position, the base plate 310 of the secondary lock slide 300 is positioned below the unlocking arm 420 of the latch spring arm 400, thereby preventing the unlocking arm 420 from being pressed sufficiently downward. The sloping surface 330 of the auxiliary lock slide 300 may be provided with an anti-slip edge to facilitate the user to toggle the auxiliary lock slide 300 with a finger. Although two locking grooves 130 are shown, it is understood that the locking grooves 130 may be single or more than three depending on the actual needs.

The auxiliary lock slider mating mounting structure may further include a retaining groove 395, and a retaining protrusion 390 may be further provided at the bottom of the auxiliary lock slider 300, and when the auxiliary lock slider is mounted on the operation surface, the retaining protrusion 390 is positioned in the retaining groove 395 and may slide back and forth, thereby restricting the auxiliary lock slider 300 from sliding out.

Further reference is made to fig. 1A and 1B to illustrate structural features for the installation of the secondary lock slide 300. Side walls are respectively provided on both sides of the operation surface 120 of the outer housing of the plug connector 100, and a limit guide protrusion 140 is provided on each side wall, and the limit guide protrusion and the operation surface together define a chute structure for mating with the slide rail protrusion 340 of the sub-lock slider 300. After the sub-lock slider 300 is fitted into the operation surface 120, the base plate 310 thereof is positioned in the sub-lock mounting area 125 and is slidable based on the guide of the chute structure, and the position is switched between the first positioning recess 121 and the second positioning recess 122.

With further reference to fig. 1A and 1B, a pair of stoppers 180 may be provided above the unlocking arm of the latch arm 400, thereby restricting the space in which the latch arm 400 is deformed upward.

The connector shown in the figures of the present utility model is a right angle connector (i.e., the tail end opening and the mating end opening of the incoming wire are not parallel, but are at approximately 90 degrees). It will be appreciated that the inventive concepts presented herein can be applied to other forms of connectors, such as straight connectors.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations of the present application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this application, and therefore, such modifications, improvements, and modifications are intended to be within the spirit and scope of the embodiments of the present application.

Claims (12)

1. A connector outer housing comprising a first opening defining a tail end for incoming wires and a second opening defining a mating end for mating with a mating connector, characterized in that:

the outer shell comprises an operation surface close to one side of the plug-in end, a main lock structure is arranged on the operation surface and comprises a lock catch spring arm which comprises a locking section close to the plug-in end and a pressing unlocking section far away from the plug-in end,

the lock catch spring arm is positioned on the outer shell through a supporting structure and can generate elastic deformation which enables the locking section to be lifted under the action of external force applied to the pressing unlocking section, the unlocking of the connector outer shell and the matched connecting device is realized through the elastic deformation,

the support structure comprises a plurality of support legs connected to the latch spring arm at one end connected to the latch spring arm, wherein the support legs at least comprise a first support leg and a second support leg, the first support leg and the second support leg extend at different angles and are connected to the latch spring arm, and an included angle formed by the first support leg and the second support leg is 55-135 degrees.

2. The connector housing of claim 1, wherein the longitudinal section of the support structure includes a main arc section having one end connected to the operating face and the other end forming a first leg, and further including a second leg diverging from the main arc section, the first leg and the second leg being connected to the latch spring arm, respectively.

3. The connector housing of claim 2, wherein the second leg diverges from an inner side of the main arc segment.

4. The connector housing of claim 1, wherein the locking arms of the latch arms are provided with a catch formation at their ends for mating with a corresponding catch formation on the counter connector housing to effect locking.

5. The connector housing of claim 4, wherein the corresponding engagement structure on the mating connector housing is a landing structure, and the lock between the catch structure and the landing structure is releasable by an external force applied to the press unlocking section.

6. The connector housing of claim 1, wherein said connector housing is mountable with a secondary lock slide, said first leg and said second leg forming an included angle of 70 ° to 120 °.

7. A connector outer housing comprising a first opening defining a tail end for incoming wires and a second opening defining a mating end for mating with a mating connector, further comprising:

the outer shell comprises an operation surface close to one side of the plug end, a lock catch spring arm is arranged on the operation surface, and the lock catch spring arm comprises a locking section close to the plug end and a pressing unlocking section far away from the plug end;

the lock catch elastic arm is positioned on the outer shell through a supporting structure, can generate elastic deformation for lifting the locking section under the action of external force applied to the pressing unlocking section, and realizes the unlocking of the connector outer shell and the matched connecting device through the elastic deformation; and

the auxiliary lock sliding block can be mounted on the operation surface of the outer shell and slides between a pre-locking position and a final locking position, and when the auxiliary lock sliding block slides to the final locking position, the auxiliary lock sliding block is positioned below the pressing unlocking section of the lock catch spring arm, so that the movement stroke of the pressing unlocking section pressed downwards is interfered.

8. The connector housing of claim 7, wherein the bottom of the secondary lock slide is provided with a positioning protrusion, and the operating face of the housing is provided with a secondary lock slide mating mounting structure comprising one or more locking grooves, each locking groove being provided with a pre-lock recess and a final lock recess, the secondary lock slide being positionable in the pre-lock recess or the final lock recess and slidable therebetween by overcoming resistance.

9. The connector housing according to claim 7, wherein,

the auxiliary lock slide block matching installation structure further comprises a stop groove, and a stop protrusion is further arranged at the bottom of the auxiliary lock slide block and can be positioned in the stop groove to limit the auxiliary lock slide block to slide and withdraw;

the two sides of the operation surface of the outer shell are respectively provided with side walls, each side wall is provided with a limit guide protrusion, two ends of the auxiliary lock slide block are respectively provided with a slide rail protrusion, and the limit guide protrusions on the side walls and the operation surface together define a slide groove matched with the slide rail protrusions of the auxiliary lock slide block.

10. A plug connector comprising the connector housing according to any one of claims 1-9.

11. The plug connector of claim 10, wherein the plug connector is a right angle connector having a first terminal with a crown spring inside and a second terminal for crimping a cable mounted in an outer housing thereof, a metal ring being provided at an end of the second terminal, and the first terminal being cylindrical and fittable into the metal ring.

12. An electrical connection kit comprising the plug connector of claim 10, and a mating receptacle connector having electrical pin terminals disposed therein for making electrical connection with a crown spring in the plug connector.

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