Tail cover and switching structure

Abstract

The utility model relates to the technical field of flashlights, in particular to a tail cover and a switching structure, the tail cover comprises a main body, a rotating ring, a pressing ring, a ball, an elastic connecting component and a trigger component, the main body, the rotating ring and the pressing ring are hollow, the rotating ring is movably sleeved outside the main body, the pressing ring is pressed on the rotating ring and is detachably connected with the main body, and the ball is connected with the elastic connecting component. A containing groove is formed in the main body in the circumferential direction and located below the pressing ring in a penetrating mode, the balls are installed in the containing groove, the elastic connecting assembly is movably installed in the main body and staggered with the balls, the trigger assembly is also installed on the main body and located below the elastic connecting assembly, a first limiting part is arranged on the inner side of the rotating ring in the circumferential direction, and a boss is further arranged at the bottom of the rotating ring. The boss and the first limiting part are arranged in a staggered mode. According to the tail cover and the adapter structure, by rotating the tail cover by different angles, the illumination function of the flashlight can be controlled, the external control switch assembly can be locked or unlocked, and meanwhile the attractiveness of the flashlight can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flashlight, more particularly to a tail cover and adapter structure. BACKGROUND

[0002] The prior art flashlight is either controlled by a switch arranged on the side to control the lighting function, or is controlled by rotating the tail cover to turn on or off the lighting, or is controlled by an external control switch assembly, wherein the external control switch assembly has two structures, one with a lock and the other without a lock, the one without a lock is directly inserted into the tail cover, the one with a lock is locked on the tail cover by a screw when the wire is inserted, and the other one is locked by rotating the inserted wire; the above structures, the external control switch without a lock is easy to fall out, the one locked by a screw needs to increase a screw and may need an additional tool to screw the screw, if the screw is screwed by hand, the screw head is relatively large, looks relatively bulky, and a large screw outside is also not beautiful; the one locked by rotating the inserted wire cannot be locked when the inserted wire is not circular. SUMMARY

[0003] The utility model aims at overcoming the problem that the prior art tail cover cannot control the lighting function by rotation and is convenient to lock the external control switch assembly, provides a tail cover and adapter structure, different angles of the tail cover are rotated to control the flashlight lighting function, lock or unlock the external control switch assembly, and increase the beauty of the flashlight.

[0004] To achieve the above object, the utility model adopts the technical scheme of:

[0005] A tail cap includes a main body with a connection interface, a rotating ring, a pressure ring, a ball bearing, an elastic connecting component, and a trigger component connected to a control circuit. The main body, the rotating ring, and the pressure ring are all hollow. The rotating ring is movably sleeved on the main body. The pressure ring presses against the rotating ring and is detachably connected to the main body. The main body has a circumferentially extending groove below the pressure ring. The ball bearing is installed in the groove. The elastic connecting component is movably installed inside the main body and offset from the ball bearing. The trigger component is also installed in the main body and located below the elastic connecting component. The rotating ring has a first limiting portion circumferentially on its inner side, and a boss at the bottom of the rotating ring, offset from the first limiting portion. Rotating the rotating ring to align the first limiting portion with the ball bearing limits the ball bearing. Rotating the rotating ring to align the boss with the elastic connecting component drives the elastic connecting component downwards to abut against the trigger component.

[0006] This invention integrates a control circuit and an elastic connecting component within the main body. A rotating ring connects the main body to the control circuit, while the first limiting part of the rotating ring aligns with the ball bearing, limiting the ball bearing's position and preventing it from moving. This allows the ball bearing to engage with the control switch component inserted into the main body, or provides clearance to unlock it. A pressure ring connects the rotating ring to the main body. Furthermore, rotating the rotating ring aligns the bottom protrusion with the elastic connecting component, causing the component to move down and contact the trigger component in the control circuit, thus creating a circuit. Rotating the ring removes the protrusion from the component, allowing it to reset and separate from the trigger component, breaking the circuit. Therefore, this design functions as a switch for the control circuit, enabling the lighting function to be turned on and off. By misaligning the first limiting part with the boss, the external control switch assembly can be locked or unlocked when the rotating ring is rotated to different positions, and the lighting function can be turned on and off. This eliminates the need for an exposed switch, improving aesthetics. Furthermore, multiple functions can be achieved simply by rotating the rotating ring, making it very convenient.

[0007] Further, the first limiting part is a protrusion, which can abut and limit the ball when the protrusion is aligned with the ball, so that the ball cannot move outward; or the first limiting part is a groove, which can clasp and limit the ball when the groove is aligned with the ball, so that the ball cannot move inward. No matter whether the first limiting part is a protrusion or a groove, the displacement of the ball is limited, so that the ball cannot move outward or inward, thereby the control switch assembly connected with the main body can be locked or unlocked. Specifically, when the first limiting part is a protrusion, the control switch assembly is in a locked state when the protrusion is aligned with the ball, and is in an unlocked state when the protrusion is not aligned with the ball; when the first limiting part is a groove, the control switch assembly is in an unlocked state when the groove is aligned with the ball, and is in a locked state when the groove is not aligned with the ball.

[0008] Further, the elastic connecting assembly comprises a push rod and an elastic piece, the main body is provided with a limiting step, the limiting step is provided with a through hole, the push rod is connected with the through hole, the elastic piece is arranged outside the push rod and above the limiting step, and the bottom of the push rod can abut against the trigger assembly. Preferably, the push rod is in a T-shaped structure and is made of metal, the trigger assembly is also made of metal, the elastic piece is a spring, the elastic piece is arranged outside the push rod, the bottom of the push rod passes through the through hole, when the convex block abuts against the push rod, the push rod is pushed to move downward, so that the bottom of the push rod abuts against the trigger assembly, the control circuit is connected, at this time, the elastic piece is compressed to generate a restoring force; when the convex block moves away from the push rod, the push rod moves upward under the driving of the restoring force of the elastic piece and is reset, the bottom of the push rod is separated from the trigger assembly, and the control circuit is disconnected.

[0009] Further, the elastic connecting assembly further comprises a contact sheet, the contact sheet is located above the trigger assembly and below the limiting step, and the contact sheet is connected with the bottom of the push rod. The contact sheet is made of metal, preferably a copper sheet, and is arranged on the bottom of the push rod, so as to connect the control circuit when the contact sheet abuts against the trigger assembly, at this time, the push rod can be made of a non-metal material and only serves to push the contact sheet downward or upward.

[0010] Further, the elastic connecting assembly further comprises a sealing ring, the sealing ring is arranged outside the push rod and above the limiting step and below the elastic piece. The sealing ring can increase the sealing effect.

[0011] Further, the trigger assembly comprises a first contact piece and a second contact piece, and the first contact piece and the second contact piece can be connected through the contact sheet. The first contact piece and the second contact piece are made of metal, and are separately arranged, so that the control circuit is disconnected, and the contact sheet is pushed downward to abut against the first contact piece and the second contact piece at the same time, so that the control circuit is connected.

[0012] Further, the first contact piece and the second contact piece are both springs. By abutting the contact piece with the two springs, good contact can be achieved, thereby controlling the on-off of the control circuit to achieve the purpose of the lighting switch.

[0013] Further, the two balls, the number of the accommodating grooves and the first limiting parts are equal to the number of the balls, each ball is placed in one accommodating groove, and the two accommodating grooves are symmetrically arranged along the axis of the main body, and the first limiting parts are also symmetrically arranged along the axis of the rotating ring. Preferably, the balls are steel balls, and the balls, the first limiting parts and the accommodating grooves are one-to-one corresponding. By symmetrically arranging two balls, the force balance of the balls and the externally connected control switch assembly during clamping locking can be achieved, so that the plug-in connection is more reliable. Within the scope of cognition of those skilled in the art, the number of balls is not limited to two, and a plurality of balls can also be arranged, the accommodating grooves are uniformly distributed along the circumference of the main body, and the first limiting parts are also uniformly distributed along the circumference of the rotating ring.

[0014] Further, the connecting interface is a Type-c interface. The conventional circular shape can be easily fixed by threads or simple rotation, and the Type-c interface is not a standard circular shape, so clamping locking by the balls of the utility model has a better effect.

[0015] Further, the main body is provided with a second limiting part on the inner side of the accommodating groove for preventing the balls from falling off. The second limiting part can prevent the balls from sliding out of the inner side of the accommodating groove after the externally connected control switch assembly is separated from the main body. Since the outer side of the accommodating groove is the rotating ring, even if the first limiting part is not aligned with the ball, the ball will not fall off from the rotating ring side and separate from the main body.

[0016] The utility model also provides a switching structure, including tail cover, control switch assembly as described above, the control switch assembly is provided with the recess that can be connected with the ball along the circumference, the control switch assembly is inserted with the tail cover and is inserted or abuts with the connecting interface. The switching structure of the utility model can be applied to the flashlight, the tail cover and the control switch assembly are inserted, in the process of rotating the rotating ring, the ball is clamped with the recess, so as to realize the locking of the control switch assembly, the control switch assembly cannot be pulled out and separated from the tail cover, continue to rotate the rotating ring, can make the ball have the space of moving outward, therefore can realize the unlocking of the control switch assembly, the ball moves outward and avoids when the control switch assembly is pulled out, can make the control switch assembly smoothly pull out and separate from the tail cover.

[0017] The utility model has the advantages that:

[0018] The rotating ring is a rotatable structure, and has several functions; 1, unlocking the external control switch assembly; when the first limiting part is a protrusion, and when the rotating ring is rotated to misalign the first limiting part with the ball, the external control switch assembly is unlocked, the ball can freely slide, when the control switch assembly is pulled out of the tail cover, the ball moves towards the side of the rotating ring, the ball cannot be buckled in the groove of the control switch assembly, and thus the unlocking effect is achieved; or when the first limiting part is a groove, and when the rotating ring is rotated to align the first limiting part with the ball, the ball is limited by the groove, the control switch assembly can be smoothly pulled out of the tail cover, and thus the unlocking effect is achieved; 2, locking the external control switch assembly; the first limiting part is a protrusion, and when the rotating ring is rotated to align the first limiting part with the ball, the ball moves towards the side of the control switch assembly, the ball buckles the control switch assembly, and the ball cannot freely move towards the side of the rotating ring due to the block of the first limiting part, and thus the locking effect of the external control switch assembly is achieved; or when the first limiting part is a groove, and when the rotating ring is rotated to misalign the first limiting part with the ball, the ball cannot move outward due to the lack of space, and the ball is always in the clamping of the groove of the control switch assembly, and thus the locking effect of the external control switch assembly is achieved; 3, the lighting switch function; when the rotating ring is rotated to align the protrusion with the elastic connecting assembly, the protrusion pushes the push rod to move towards the direction of the trigger assembly, and the contact piece is caused to contact the trigger assembly, and the switch function of the control circuit is activated; through rotating the rotating ring to different positions, multiple functions can be realized, product space is saved, and the diversity of product functions is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure diagram of the tail cover.

[0020] Figure 2 is a sectional view of the tail cover when the control circuit is disconnected.

[0021] Figure 3 is a structure diagram of the tail cover when the control circuit is connected.

[0022] Figure 4 is a sectional view of the tail cover when the control circuit is connected.

[0023] Figure 5 is a structure diagram of the main body.

[0024] Figure 6 is a structure diagram of the adapter structure.

[0025] Figure 7 is a structure diagram of the tail cover when the control switch assembly is unlocked in the embodiment 1.

[0026] Figure 8 is a sectional view of the tail cover when the control switch assembly is unlocked in the embodiment 1.

[0027] Figure 9 is the structure diagram of the control switch assembly locking of the embodiment 1 of the utility model.

[0028] Figure 10 is the sectional view of the control switch assembly locking of the embodiment 1 of the utility model.

[0029] In which, the illustration mark is as follows:

[0030] 1, main body;11, connecting interface;12, containing groove;13, limiting step;14, second limiting portion;2, rotary ring;21, first limiting portion;22, boss;3, press ring;4, ball;5, elastic connecting assembly;51, push rod;52, elastic piece;53, contact sheet;54, sealing ring;55, gasket;6, trigger assembly;61, first contact;62, second contact;7, control circuit;101, tail cover;102, control switch assembly. DETAILED DESCRIPTION

[0031] The drawings are only for example description, and can not be understood as the limitation of the patent;In order to better illustrate the embodiment, some components of the drawings can be omitted, enlarged or reduced, and the size of actual product is not represented;For the person skilled in the art, some well-known structures and their description can be omitted in the drawings. The position relationship described in the drawings is only for example description, and can not be understood as the limitation of the patent.

[0032] The same or similar signs in the drawings of the embodiment of the utility model correspond to the same or similar parts;In the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "long" and "short" is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the device or element must have a specific orientation, a specific orientation and operation, therefore the terms describing the position relationship in the drawings are only for example description, and can not be understood as the limitation of the patent, for the person skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0033] The technical scheme of the utility model is further specifically described as follows by specific embodiment and in conjunction with the drawings:

[0034] Embodiment 1

[0035] As Figure 1As shown is an embodiment 1 of the tail cover of the utility model, including the main body 1 equipped with the connecting interface 11, the swivel ring 2, the compression ring 3, the ball 4, the elastic connecting assembly 5, the trigger assembly 6 connected with the control circuit 7, the main body 1, the swivel ring 2, the compression ring 3 are all hollowly arranged, the swivel ring 2 is movably sleeved on the main body 1, the compression ring 3 is arranged on the swivel ring 2 and can be detachably connected with the main body 1, the main body 1 is provided with the containing groove 12 through the circumference and below the compression ring 3, the ball 4 is installed in the containing groove 12, the elastic connecting assembly 5 is movably arranged in the main body 1 and is arranged in dislocation with the ball 4, the trigger assembly 6 is also arranged in the main body 1 and below the elastic connecting assembly 5, the inside of the swivel ring 2 is provided with the first limiting portion 21 along the circumference, the bottom of the swivel ring 2 is further provided with the boss 22, the boss 22 is arranged in dislocation with the first limiting portion 21; the first limiting portion 21 is aligned with the ball 4 by rotating the swivel ring 2, and the ball 4 can be limited; the boss 22 is aligned with the elastic connecting assembly 5 by rotating the swivel ring 2, and the elastic connecting assembly 5 can be driven to move downward and abut against the trigger assembly 6.

[0036] Further, the first limiting portion 21 is protruding, the utility model installs the control circuit 7 and the elastic connecting assembly 5 in the main body 1, utilizes the rotary connection of the swivel ring 2 and the main body 1, and utilizes the first limiting portion 21 of the swivel ring 2 to limit the ball 4 when being aligned with the ball 4 to realize the clamping locking of the ball 4 and the control switch assembly 102 inserted in the main body 1, as Figure 9 And Figure 10 As shown; or the ball 4 has a space for avoiding when the first limiting portion 21 is dislocated with the ball 4, so that the ball 4 is unlocked from the clamping of the control switch assembly 102; when the first limiting portion 21 is protruding, the gap between the protrusion and the ball 4 is less than the length of the ball 4 clamping the control switch assembly 102, and the gap between the rest of the swivel ring 2 and the ball 4 is greater than the length of the ball 4 clamping the control switch assembly 102; as Figure 7 And Figure 8 As shown, the compression ring 3 is used to realize the connection of the swivel ring 2 and the main body 1; on the other hand, when the bottom boss 22 is aligned with the elastic connecting assembly 5 by rotating the swivel ring 2, the elastic connecting assembly 5 can be moved downward to abut against the trigger assembly 6 in the control circuit 7, so that the control circuit 7 forms a path, as Figure 3 And Figure 4 As shown, and when the boss 22 is away from the elastic connecting assembly 5 by rotating the swivel ring 2, the elastic connecting assembly 5 can reset itself to separate from the trigger assembly 6, so that the control circuit 7 forms an open circuit, as Figure 2As shown, the switch of the control circuit 7 can be used to turn on or off the lighting function. By misaligning the first limiting portion 21 and the boss 22, the external control switch assembly 102 can be locked or unlocked when the rotating ring 2 is rotated to different positions, and the lighting function can be turned on or off without exposing the switch externally, improving the appearance. By simply rotating the rotating ring 2, multiple functions can be achieved, which is very convenient.

[0037] Preferably, as Figure 5 As shown, the second limiting portion 14 is arranged on the inner side of the main body 1 to prevent the ball 4 from falling off. The second limiting portion 14 can prevent the ball 4 from sliding out of the inner side of the accommodating groove 12 after the external control switch assembly 102 is separated from the main body 1. Since the outer side of the accommodating groove 12 is the rotating ring 2, even if the first limiting portion 21 is not aligned with the ball 4, the ball 4 will not fall off from the rotating ring 2 side and separate from the main body 1.

[0038] Specifically, the elastic connecting assembly 5 includes a push rod 51 and an elastic member 52. The main body 1 is provided with a limiting step 13, and the limiting step 13 is provided with a through hole. The push rod 51 is inserted into the through hole, and the elastic member 52 is arranged outside the push rod 51 and above the limiting step 13. The bottom of the push rod 51 can abut against the trigger assembly 6. Preferably, the push rod 51 is T-shaped and made of metal, the trigger assembly 6 is also made of metal, the elastic member 52 is a spring, the elastic member 52 is arranged outside the push rod 51, and the bottom of the push rod 51 passes through the through hole. When the boss 22 abuts against the push rod 51, the push rod 51 is pushed downward to make the bottom of the push rod 51 abut against the trigger assembly 6, so that the control circuit 7 is turned on. At this time, the elastic member 52 is compressed to generate a restoring force. When the boss 22 moves away from the push rod 51, the push rod 51 moves upward under the driving force of the restoring force of the elastic member 52 to reset. The bottom of the push rod 51 is separated from the trigger assembly 6, and the control circuit 7 is turned off.

[0039] Further, the elastic connecting assembly 5 further includes a sealing ring 54, which is arranged outside the push rod 51 and below the limiting step 13 and the elastic member 52. The sealing ring 54 can increase the sealing effect. A gasket 55 is arranged on the sealing ring 54 and below the spring, and the gasket 55 is also arranged outside the push rod 51. The gasket 55 can increase the reliability of the installation of the push rod 51.

[0040] As an improvement of the embodiment, the trigger assembly 6 comprises a first contact piece 61 and a second contact piece 62, and the first contact piece 61 and the second contact piece 62 are connected through the contact sheet 53. Preferably, the first contact piece 61 and the second contact piece 62 are both springs. The first contact piece 61 and the second contact piece 62 are both made of metal, and the first contact piece 61 and the second contact piece 62 are separately arranged, so that the control circuit 7 is disconnected, and the contact sheet 53 is driven to abut against the first contact piece 61 and the second contact piece 62 at the same time by moving downward through the push rod 51, so that the control circuit 7 is connected.

[0041] Preferably, the connection interface 11 is a Type-c interface. The Type-c interface is not a standard circle, so the ball 4 is used for clamping and locking, which has a better effect.

[0042] Embodiment 2

[0043] The embodiment is an embodiment 2 of a tail cover, which is similar to the embodiment 1, and the difference is that the first limiting part 21 is a groove. The control circuit 7 and the elastic connection assembly 5 are arranged in the main body 1, the rotating ring 2 is rotatably connected with the main body 1, the ball 4 is limited when the first limiting part 21 of the rotating ring 2 is aligned with the ball 4, so that the ball 4 is unlocked with the control switch assembly 102 inserted in the main body 1, and the ball 4 is clamped and locked with the control switch assembly 102 when the first limiting part 21 is misaligned with the ball 4, so that the ball 4 does not have an avoiding space to move outward. When the first limiting part 21 is a groove, the gap between the groove and the ball 4 is greater than the length of the ball 4 clamping the control switch assembly 102, and the gap between the rest of the rotating ring 2 and the ball 4 is less than the length of the ball 4 clamping the control switch assembly 102.

[0044] Embodiment 3

[0045] The embodiment is an embodiment 3 of a tail cover, which is similar to the embodiment 1, and the difference is that the elastic connection assembly 5 further comprises a contact sheet 53, the contact sheet 53 is located above the trigger assembly 6 and below the limiting step 13, and the contact sheet 53 is further connected with the bottom of the push rod 51. The contact sheet 53 is made of metal, preferably a copper sheet, and the contact sheet 53 is arranged at the bottom of the push rod 51, so as to make the control circuit 7 connected when the contact sheet 53 abuts against the trigger assembly 6. At this time, the push rod 51 can be made of a non-metal material, and only serves to drive the contact sheet 53 to move downward or upward.

[0046] Embodiment 4

[0047] The embodiment is an embodiment 4 of the tail cover, similar to the embodiment 1, and the difference is that the two balls 4 are equal in number to the number of the accommodating grooves 12 and the first limiting portions 21, each ball 4 is placed in one accommodating groove 12, and the two accommodating grooves 12 are symmetrically arranged along the axis of the main body 1, and the first limiting portions 21 are also symmetrically arranged along the axis of the rotating ring 2.

[0048] Preferably, the ball 4 is a steel ball, the ball 4 corresponds to the first limiting portion 21 and the accommodating groove 12, and the two balls 4 are symmetrically arranged to balance the force when the ball 4 is clamped and locked with the externally connected control switch assembly 102, so that the plug-in is more reliable; within the scope of the knowledge of those skilled in the art, the number of balls 4 is not limited to two, and can also be multiple, the accommodating grooves 12 are uniformly distributed along the circumference of the main body 1, and the first limiting portions 21 are also uniformly distributed along the circumference of the rotating ring 2. At this time, the boss 22 can be located at any position between the two first limiting portions 21 inside the rotating ring 2.

[0049] Embodiment 5

[0050] As Figure 6 shown, the utility model is an embodiment of a switching structure, comprising the tail cover 101 and the control switch assembly 102 as described above, the control switch assembly 102 is provided with a groove that can be clamped with the ball 4 along the circumference, and the control switch assembly 102 is plugged with the tail cover 101 and plugged with or abutted with the connecting interface 11.

[0051] The switching structure of the utility model can be applied to a flashlight, the tail cover 101 is plugged with the control switch assembly 102, the ball 4 is clamped with the groove during the rotation of the rotating ring 2, so as to lock the control switch assembly 102, the control switch assembly 102 cannot be pulled out of the tail cover 101, and the ball 4 has an outward moving space when the rotating ring 2 is continuously rotated, so that the control switch assembly 102 can be unlocked, the ball 4 moves outward to avoid when the control switch assembly 102 is pulled out, and the control switch assembly 102 can be smoothly pulled out and separated from the tail cover 101.

[0052] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A tail cover characterized by, The utility model provides a kind of trigger mechanism, including the main body (1) equipped with connecting interface (11), swivel (2), compression ring (3), ball (4), elastic connection component (5), and trigger component (6) connected with control circuit (7), the main body (1), the swivel (2), the compression ring (3) inside are hollowly provided, the swivel (2) is movably sleeved in the main body (1) outside, the compression ring (3) is pressed in the swivel (2) and is detachably connected with the main body (1), the main body (1) is arranged with accommodating groove (12) along the circumference and below the compression ring (3), the ball (4) is installed in the accommodating groove (12), the elastic connection component (5) is movably arranged in the main body (1) and is misaligned with the ball (4), the trigger component (6) is also arranged in the main body (1) and below the elastic connection component (5), the swivel (2) is provided with first limiting portion (21) on the inside along the circumference, the swivel (2) bottom is further provided with boss (22), the boss (22) is misaligned with the first limiting portion (21);Rotating the swivel (2) makes first limiting portion (21) with the ball (4) alignment can be limited to the ball (4);Rotating the swivel (2) makes the boss (22) with the elastic connection component (5) alignment can drive the elastic connection component (5) and move down after with the trigger component (6) abut.

2. The tail cover of claim 1, wherein, The first limiting portion (21) is protruding, when protruding is aligned with ball (4), ball (4) can be abutted and limited, so that ball (4) cannot move outward;Or the first limiting portion (21) is groove, when groove is aligned with ball (4), ball (4) can be clamped and limited, so that ball (4) cannot move inward.

3. Tailgate according to claim 1 or 2, characterized in that The elastic connection component (5) includes push rod (51), elastic member (52), the main body (1) is provided with limiting step (13), the limiting step (13) is provided with through hole, the push rod (51) is inserted with the through hole, the elastic member (52) is sleeved on the push rod (51) outside and above the limiting step (13), the push rod (51) bottom can be abutted with the trigger component (6).

4. The tail cover of claim 3, wherein, The elastic connection component (5) further includes contact sheet (53), the contact sheet (53) is above the trigger component (6) and below the limiting step (13), the contact sheet (53) is also connected with the push rod (51) bottom.

5. The tail cover of claim 3, wherein, The elastic connection component (5) further includes sealing ring (54), the sealing ring (54) is sleeved on the push rod (51) outside and below the limiting step (13) and the elastic member (52).

6. The tail cover of claim 4, wherein, The trigger component (6) includes first contact piece (61), second contact piece (62), the first contact piece (61) and the second contact piece (62) can be connected through the contact sheet (53).

7. The tail cover of claim 1, wherein, The number of the accommodating grooves (12) and the first limiting portions (21) is equal to the number of the balls (4), each ball (4) is placed in one accommodating groove (12), and the two accommodating grooves (12) are symmetrically arranged along the axis of the main body (1), and the first limiting portions (21) are also symmetrically arranged along the axis of the rotating ring (2).

8. The tail cover of claim 1, wherein, The connecting interface (11) is a Type-c interface.

9. The tail cover of claim 1, wherein, The main body (1) is provided with a second limiting portion (14) on the inner side of the accommodating groove (12) for preventing the ball (4) from falling off.

10. An adapter structure, characterized by The control switch assembly (102) is provided with a groove which can be clamped with the ball (4) in the circumferential direction, the control switch assembly (102) is inserted with the tail cover (101) and is inserted or abuts with the connecting interface (11).

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