CN216215937U - Charger baby - Google Patents

Abstract

The utility model relates to a charger baby, which comprises a charger baby body and a charging head arranged on the charger baby body; the charger body is provided with a bearing surface for supporting the mobile terminal, the bearing surface is provided with a containing groove matched with the charging head, and the charging head is rotatably connected in the containing groove; the overhead charging terminal that is provided with charges, the head that charges when rotating to the preset position for the tank bottom of holding tank, the head that charges can be followed the orientation and is close to or keep away from the orientation removal of holding tank bottom. The precious charging of this disclosure has the mouth that charges that can be direct and mobile terminal to peg graft thereby for mobile terminal carries out the charging terminal that charges, places mobile terminal and can utilize the charging head to charge to it on the precious loading end that charges, need not to use the charging wire, convenient to carry, user experience is good.

Description

Charger baby

Technical Field

The present disclosure relates to a charging power supply technology field of mobile electronic devices, and particularly relates to a power bank.

Background

The charger baby can be carried about by a person, can store electric energy by the person, is mainly a portable charger for charging handheld mobile equipment such as consumer electronics products such as wireless telephones, notebook computers and the like, and is particularly applied to occasions without external power supply.

However, the treasured that charges among the prior art all has or long or short charging wire, and the one end and the treasured that charges of charging wire are connected, and the other end of charging wire is pegged graft with mobile terminal for example the mouth that charges of cell-phone, and treasured and charging wire charge are solitary two parts, carry inconveniently, and lose easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a power bank.

The present disclosure provides a power bank, which includes a power bank body and a charging head arranged on the power bank body;

the charger body is provided with a bearing surface for supporting the mobile terminal, a containing groove matched with the charging head is formed in the bearing surface, and the charging head is rotatably connected in the containing groove;

the charging head is provided with a charging terminal, and when the charging head rotates to a preset position relative to the bottom of the accommodating groove, the charging head can move in a direction towards or away from the bottom of the accommodating groove.

Furthermore, a rotating shaft is arranged in the accommodating groove, and the charging head is connected to the rotating shaft and can rotate around the rotating shaft; the charging device comprises a charging head, a containing groove, an elastic piece, a first end and a second end, wherein the elastic piece is arranged between the containing groove and the charging head, the first end of the elastic piece is connected with the containing groove, the second end of the elastic piece is connected to the charging head, and the elastic piece is used for providing force for the charging head to rotate to the preset position.

Further, a strip-shaped hole is formed in the charging head, the rotating shaft penetrates through the strip-shaped hole, the charging head rotates to the preset position, the charging head can move along the extending direction of the strip-shaped hole, and therefore the charging head moves along the direction close to or far away from the bottom of the accommodating groove.

Further, be provided with the slide rail on the inner wall in bar hole, be provided with on the outer wall of pivot with the spout that the slide rail matches, the slide rail can be followed the spout removes, so that the head that charges can be followed the orientation and is close to or keeps away from the direction of storage tank bottom removes.

Furthermore, an avoiding hole is formed in the charging head, and the second end of the elastic piece is connected to the avoiding hole in a sliding mode.

Further, dodge the hole and be close to the bar hole is seted up, just is in charge on the lateral wall of head, dodge the hole the extending direction with the extending direction in bar hole satisfies the parallel condition.

Furthermore, a stopping structure is arranged between the accommodating groove and the charging head and used for positioning the charging head when the charging head rotates to the preset position.

Further, the stop structure comprises a step groove and a stop convex part; the step groove is formed in the groove bottom of the accommodating groove, the stop convex portion is arranged at one end, close to the step groove, of the charging head, and when the charging head rotates to the preset position, the stop convex portion is arranged on one side, parallel to the stop convex portion, of the step groove in a blocking mode.

Further, when the charging head rotates to the preset position, the charging terminal and the bearing surface meet the parallel condition.

Furthermore, an elastic pressing plate is further arranged between one side of the charging head, close to the charging terminal, and the accommodating groove, and when the elastic pressing plate is pressed, the charging head is opened or placed in the accommodating groove.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

according to the charger baby provided by the disclosure, the charger baby body is arranged, the charger head is arranged on the charger baby body, the charger baby body is also provided with a bearing surface for supporting the mobile terminal, the bearing surface is provided with a containing groove matched with the charger head, and the charger head is rotatably connected in the containing groove; the charging head is provided with a charging terminal, and when the charging head rotates to a preset position relative to the bottom of the accommodating groove, the charging head can move in a direction towards or away from the bottom of the accommodating groove, so that the charging terminal can be inserted into a charging port of the mobile terminal. During the specific use, rotate the head that charges to preset the position to place mobile terminal on the loading face, according to mobile terminal's thickness, with the head that charges along the orientation near or keep away from the orientation of storage tank bottom and remove, adjust the height of the charging terminal of the head that charges for the face of placing promptly, so that the head that charges can insert and establish in mobile terminal's the mouth that charges. Based on this, thereby the precious charging that has on the treasured that charges that can be direct and mobile terminal's mouth that charges is pegged graft and is carried out charging terminal that charges for mobile terminal, places mobile terminal and can utilize the charging head to charge it on the precious loading end that charges, need not to use the charging wire, convenient to carry, user experience is good.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a power bank according to an embodiment of the disclosure, in which a state that a charging head rotates to the outside of an accommodating groove is illustrated;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

fig. 4 is a top view of the power bank according to the embodiment of the disclosure, wherein a state of the charging head being placed in the accommodating groove is illustrated.

Wherein, 1, the charger body; 11. a bearing surface; 12. a containing groove; 2. a charging head; 3. a charging terminal; 4. a rotating shaft; 5. an elastic member; 6. a strip-shaped hole; 7. avoiding holes; 8. a stop structure; 81. a step groove; 82. a stop boss.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 to 4, the present embodiment provides a power bank, which includes a power bank body 1 and a charging head 2 disposed on the power bank body 1; the charger body 1 is provided with a bearing surface 11 for supporting the mobile terminal, a containing groove 12 matched with the charging head 2 is formed in the bearing surface 11, and the charging head 2 is rotatably connected in the containing groove 12; the charging terminal 3 is arranged on the charging head 2, when the charging head 2 rotates to a preset position relative to the bottom of the accommodating groove 12, the charging head 2 can move towards or away from the bottom of the accommodating groove 12, so that the charging terminal 3 can be inserted into a charging port of the mobile terminal.

In this embodiment, the treasured that charges can any suitable shape such as cuboid, square, ellipsoid, as long as treasured body 1 self that charges has charging head 2, can directly charge for mobile terminal can, can choose for use wantonly according to specific in service behavior, does not do too much restriction here.

During concrete realization, the loading end 11 has on the treasured body that charges 1, this loading end 11 and mobile terminal phase-match, when utilizing the treasured that charges to charge to mobile terminal, can place mobile terminal on this treasured loading end 11 that charges, the head of charging 2 that the treasured body 1 self that utilizes to charge had can charge to mobile terminal, during the use, because mobile terminal directly places on the treasured that charges, mobile terminal and the precious laminating of charging are better, be favorable to the user one hand to grip, grip and feel good, high portability, small occupied space, user experience is good.

According to some embodiments, the bearing surface 11 may be provided with anti-slip stripes, and the outer edge of the bearing surface 11 may be provided with a clamping structure for clamping the mobile terminal, so that the mobile terminal placed on the bearing surface 11 can be prevented from slipping off the charge pal, the fit between the mobile terminal and the charge pal can be improved, and the mobile terminal has high stability and good safety during charging.

In this embodiment, the accommodating slot 12 is matched with the charging head 2, and when the mobile terminal is used, the charging head 2 is rotated out of the accommodating slot 12 to a preset position to charge the mobile terminal; when not using, first 2 complete accommodations that charge are in storage tank 12, and at this moment, first 2 that charge do not bulge in the notch of storage tank 12, and the thickness of first 2 that charges is not more than storage tank 12's groove depth promptly to can prevent that charge first 2 and the charging terminal 3 on the first 2 that charges from exposing outside and causing the destruction, simple structure, convenient to use, the security is good.

It should be noted that the charging terminal 3 can be inserted into the charging port of the mobile terminal to charge the mobile terminal only when the charging head 2 is rotated to the preset position.

It is easily understood by those skilled in the art that the charging terminal 3 on the charging head 2 is located on the side of the charging head 2 close to the carrying surface 11 when the charging head 2 is rotated to the preset position.

In this embodiment, the receiving groove 12 may be opened at any suitable position on the receiving surface 11 as long as the charging head 2 is rotatably connected in the receiving groove 12.

For example, referring to fig. 1 and 4, the receiving groove 12 is disposed at the edge of the carrying surface 11, that is, a part of the receiving groove 12 is disposed at the connection between the carrying surface 11 and the sidewall of the charging head 2, so that the carrying surface 11 has a high space utilization rate, and meets the development trend of light weight, thinness, small volume, small occupied space, and portability.

It can be understood that this internal battery and the Flexible Circuit board (FPC) of being provided with of treasured that charges, FPC's first end and 3 electric connection of charging terminal, FPC's second end and battery electric connection. When the mobile terminal such as a mobile phone needs to be charged, the mobile phone is placed on the bearing surface 11, the charging terminal 3 is connected with a charging port of the mobile phone, and at the moment, the storage battery discharges electricity to charge the mobile terminal through the FPC.

Through the technical scheme, according to the power bank provided by the embodiment, the power bank body 1 is arranged, the charging head 2 is arranged on the power bank body 1, the power bank body 1 is further provided with the bearing surface 11 for supporting the mobile terminal, the bearing surface 11 is provided with the accommodating groove 12 matched with the charging head 2, and the charging head 2 is rotatably connected in the accommodating groove 12; the charging terminal 3 is arranged on the charging head 2, when the charging head 2 rotates to a preset position relative to the bottom of the accommodating groove 12, the charging head 2 can move towards or away from the bottom of the accommodating groove 12, so that the charging terminal 3 can be inserted into a charging port of the mobile terminal. During the specific use, rotate the head 2 that charges to preset position to place mobile terminal on loading face 11, according to mobile terminal's thickness, with the head 2 that charges along the orientation be close to or keep away from the direction of storage tank 12 tank bottom and remove, adjust the height of the terminal 3 that charges of head 2 for placing the face promptly, so that the head 2 that charges can insert and establish in mobile terminal's the mouth that charges. Based on this, thereby the precious charging that has on the treasured that charges that can be direct and mobile terminal's mouth that charges is pegged graft and is carried out charging terminal 3 that charges for mobile terminal, places mobile terminal and can utilize charging head 2 to charge to it on precious loading end 11 that charges, need not to use the charging wire, convenient to carry, user experience is good.

In the present embodiment, referring to fig. 2 and 3, a rotating shaft 4 is disposed in the accommodating groove 12, and the charging head 2 is connected to the rotating shaft 4 and can rotate around the rotating shaft 4; be provided with elastic component 5 between storage tank 12 and the first 2 that charge, the first end and the storage tank 12 of elastic component 5 are connected, and the second end of elastic component 5 is connected on charging first 2, and elastic component 5 is used for providing for charging first 2 and rotates to the power of predetermineeing the position, that is to say, charge first 2 can rotate to predetermineeing the position under the spring action of elastic component 5.

During specific implementation, two opposite groove walls of the accommodating groove 12 are respectively provided with mounting holes matched with the rotating shaft 4, and two ends of the rotating shaft 4 are respectively mounted in the mounting holes of the two groove walls of the accommodating groove 12 and are relatively fixed with the mounting holes. The charging head 2 is pivotally connected to the rotating shaft 4, so that the charging head 2 is rotatably connected in the accommodating groove 12.

In the present embodiment, the elastic member 5 may be any suitable elastic member 5 such as a spring, an elastic sheet, etc., as long as the elastic force of the elastic member 5 can rotate the charging head 2 to the preset position.

When the charging head 2 is completely accommodated in the accommodating groove 12, the elastic piece 5 is in a compressed state; when the charging head 2 is released from the accommodating state in the accommodating groove 12 by an external force, the elastic member 5 is in a natural extension state, and at the same time, the charging head 2 rotates to a preset position under the elastic force of the elastic member 5.

When the charging device is used, only a small external force needs to be applied to the charging head 2, so that the charging head 2 is released from the accommodating state in the accommodating groove 12, and at the moment, the charging head 2 can rotate to the preset position under the elastic action of the elastic piece 5.

It is easily understood by those skilled in the art that, when the charging head 2 needs to be rotated from the predetermined position to be completely accommodated in the accommodating groove 12, an external force greater than the elastic force of the elastic member 5 is applied to the charging head 2, so that the elastic member 5 can be restored from the natural extension state to the compression state, and the charging head 2 is rotated from the predetermined position in a direction approaching the bottom of the accommodating groove 12, so that the charging head 2 is completely accommodated in the accommodating groove 12.

In this embodiment, referring to fig. 1 and fig. 2, a strip hole 6 has been seted up on charging head 2, and pivot 4 wears to establish in strip hole 6, and when charging head 2 rotated to preset position, charging head 2 can move along the extending direction in strip hole 6 to make charging head 2 move to preset height along the direction that the orientation is close to or keeps away from the 12 tank bottoms of storage tank, thereby can charge for the mobile terminal of different thickness.

It should be noted that the direction parallel to the rotating shaft 4 is the width direction of the charging head 2, and the width direction of the charging head 2 matches the width of the accommodating groove 12; the direction perpendicular to the rotating shaft 4 is the length direction and the thickness direction of the charging head 2, wherein the thickness direction of the charging head 2 is matched with the groove depth of the accommodating groove 12, and the length direction of the charging head 2 is matched with the groove length of the accommodating groove 12 on the bearing surface 11.

Wherein, the bar hole 6 runs through the width direction of the first 2 that charges and sets up, the axial length of bar hole 6 is the same with the width of the first 2 that charges promptly, the extending direction of bar hole 6 on the first 2 lateral walls that charges is along the length direction extension of the first 2 that charges promptly, thereby make the first 2 that charges rotate to when predetermineeing the position, the first 2 that charges can be along the extending direction of bar hole 6 and the length direction of the first 2 that charges promptly removes, so that the first 2 that charges is close to or keeps away from the tank bottom of storage tank 12, thereby can charge for the mobile terminal of different thickness.

In addition, the preset height of the charging head 2 is a height at which the charging terminal 3 of the charging head 2 can be inserted into the charging port of the mobile terminal.

When the head 2 that charges when predetermineeing the position, the head 2 that charges has between the one end that is close to the storage tank 12 tank bottom and the tank bottom of storage tank 12 and dodges the height, dodges the liftable height that highly is not less than the head 2 that charges.

Further, when making first 2 that charges when moving along the orientation that is close to or keeps away from the 12 tank bottoms of storage tank, first 2 that charges can not rock on its width direction, be provided with the slide rail on the inner wall of bar hole 6, be provided with the spout that matches with the slide rail on the outer wall of pivot 4, the slide rail can be followed the spout and removed, so that first 2 that charges can be smoothly along the orientation that is close to or keeps away from the 12 tank bottoms of storage tank and remove, the cooperation of spout and slide rail has the guide effect to the removal of first 2 that charges this moment.

In this embodiment, referring to fig. 2, the charging head 2 is further provided with a avoiding hole 7, the second end of the elastic element 5 is slidably connected in the avoiding hole 7, and when the charging head 2 moves in a direction toward or away from the bottom of the accommodating groove 12, the second end of the elastic element 5 also slides in the avoiding hole 7.

Wherein, dodge hole 7 and can set up the arbitrary suitable position on the first 2 lateral walls that charge, as long as when charging head 2 along the orientation near or when keeping away from the direction of storage tank 12 tank bottoms, the other end of elastic component 5 also can slide in dodging hole 7 can.

Preferably, referring to fig. 2, the avoiding hole 7 is opened near the strip-shaped hole 6, and on the sidewall of the charging head 2, the extending direction of the avoiding hole 7 and the extending direction of the strip-shaped hole 6 satisfy the parallel condition.

It should be noted here that the above-mentioned "meeting the parallel condition" is intended to indicate that the extending direction of the avoiding hole 7 and the extending direction of the bar-shaped hole 6 do not need to be absolutely parallel, and that the extending direction of the avoiding hole 7 may be slightly inclined at an angle with respect to the extending direction of the bar-shaped hole 6 due to manufacturing tolerance and assembly within an allowable range, and in this case, the extending direction of the avoiding hole 7 and the extending direction of the bar-shaped hole 6 are also considered to be parallel.

In this embodiment, referring to fig. 2 and showing, be provided with backstop structure 8 between storage tank 12 and the first 2 that charge, backstop structure 8 is used for fixing a position the first 2 that charges when the first 2 that charges rotates to preset the position, and backstop structure 8 can prevent the first 2 that charges excessively rotatory promptly to with the first 2 backstops that charge in preset the position, simple structure, convenient to use, user experience is good.

As an alternative embodiment, the stop structure 8 includes a step groove 81 and a stop protrusion 82; the stepped groove 81 is arranged at the bottom of the accommodating groove 12, the stopping convex part 82 is arranged at one end of the charging head 2 close to the stepped groove 81, and when the charging head 2 rotates to a preset position, the stopping convex part 82 is arranged on one side of the stepped groove 81 parallel to the stopping convex part 82 in a blocking manner, so that the structure is simple, the use is convenient, and the stopping effect is good.

Referring to fig. 2, a stepped groove 81 is formed downward at the bottom of the receiving groove 12, an end portion of the charging head 2 near the stepped groove 81 extends downward to form a stopping protrusion 82, and when the charging head 2 rotates to a predetermined position, a surface of the stopping protrusion 82 near the receiving groove 12 is stopped at a surface of the stepped groove 81 parallel to the depth of the receiving groove 12.

As another alternative embodiment, the bottom of the receiving groove 12 is provided with a stop protrusion 82 upward, a step groove 81 is provided on a side of the charging head 2 away from the charging terminal 3, and when the charging head 2 rotates to the preset position, the stop protrusion 82 stops on a side of the step groove 81 parallel to the stop protrusion 82.

In the present embodiment, referring to fig. 1 and 2, when the charging head 2 rotates to the preset position, the charging terminal 3 and the carrying surface 11 satisfy a parallel condition, that is, when the charging head 2 rotates to the preset position, the charging head 2 is perpendicular to the carrying surface 11, so as to facilitate the insertion of the charging terminal 3 into the charging port of the mobile terminal.

It should be noted here that the above-mentioned "meeting the parallel condition" is intended to mean that the charging terminal 3 and the carrying surface 11 need not be absolutely parallel, and that the charging terminal 3 may be slightly inclined at a certain angle with respect to the carrying surface 11 within an allowable range due to manufacturing tolerance and assembly, and in this case, the charging terminal 3 and the carrying surface 11 are also considered to be parallel.

In the present embodiment, in order to facilitate the switching of the charging head 2 between the use state and the non-use state, an elastic pressing plate is further provided between the side of the charging head 2 close to the charging terminal 3 and the accommodating slot 12, and when the elastic pressing plate is pressed, the charging head 2 is opened or put from the accommodating slot 12.

Wherein, pressing the elastic pressing plate, the charging head 2 can be opened from the containing groove 12, and meanwhile, the charging head 2 rotates to the preset position under the action of the elastic piece 5; the external force larger than the elastic force is applied to the charging head 2, so that the charging head 2 rotates from the preset position to be partially accommodated in the accommodating groove 12 along the direction close to the bottom of the accommodating groove 12, and when the charging head 2 contacts the elastic pressing plate, the charging head 2 can be completely accommodated in the accommodating groove 12.

According to some embodiments, the side of the charging head 2 adjacent to the charging terminal 3 and the receiving groove 12 may also be connected together by a bayonet and a snap.

It is noted that, in this document, 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. Also, the terms "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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The charger baby is characterized by comprising a charger baby body (1) and a charging head (2) arranged on the charger baby body (1);

the charger baby body (1) is provided with a bearing surface (11) for supporting a mobile terminal, a containing groove (12) matched with the charging head (2) is formed in the bearing surface (11), and the charging head (2) is rotatably connected in the containing groove (12);

the charging head (2) is provided with a charging terminal (3), and when the charging head (2) rotates to a preset position relative to the bottom of the accommodating groove (12), the charging head (2) can move in a direction towards or away from the bottom of the accommodating groove (12).

2. The power bank as claimed in claim 1, wherein a rotating shaft (4) is arranged in the accommodating groove (12), and the charging head (2) is connected to the rotating shaft (4) and can rotate around the rotating shaft (4);

storage tank (12) with be provided with elastic component (5) between first (2) charges, the first end of elastic component (5) with storage tank (12) are connected, the second end of elastic component (5) is connected charge on first (2), elastic component (5) are used for charge first (2) provide rotate extremely the power of default position.

3. The charger according to claim 2, wherein a strip-shaped hole (6) is formed in the charging head (2), the rotating shaft (4) is inserted into the strip-shaped hole (6), and when the charging head (2) rotates to the preset position, the charging head (2) can move along the extending direction of the strip-shaped hole (6), so that the charging head (2) moves in a direction towards or away from the bottom of the accommodating groove (12).

4. The charger baby according to claim 3, wherein a sliding rail is arranged on the inner wall of the strip-shaped hole (6), a sliding groove matched with the sliding rail is arranged on the outer wall of the rotating shaft (4), and the sliding rail can move along the sliding groove, so that the charging head (2) can move in a direction towards or away from the bottom of the accommodating groove (12).

5. The power bank as claimed in claim 3, wherein the charging head (2) is further provided with an avoiding hole (7), and the second end of the elastic member (5) is slidably connected in the avoiding hole (7).

6. The treasured charges according to claim 5, characterized in that dodge hole (7) be close to bar hole (6) set up, and on the lateral wall of head (2) charges, dodge the extending direction of hole (7) and the extending direction of bar hole (6) satisfies parallel condition.

7. The power bank as claimed in claim 1, characterized in that a stop (8) is arranged between the receiving groove (12) and the charging head (2), the stop (8) being configured to position the charging head (2) when the charging head (2) is rotated to the predetermined position.

8. The power bank as claimed in claim 7, characterized in that the stop structure (8) comprises a step groove (81) and a stop projection (82);

step groove (81) set up on the tank bottom of storage tank (12), backstop convex part (82) set up the head that charges (2) be close to one of step groove (81) is served, charge head (2) rotate extremely when predetermineeing the position, backstop convex part (82) keep off and establish step groove (81) with on the parallel one side of backstop convex part (82).

9. The power bank as claimed in any one of claims 1 to 8, wherein the charging terminal (3) and the carrying surface (11) meet a parallel condition when the charging head (2) is rotated to the preset position.

10. The power bank as claimed in any one of claims 1 to 8, wherein an elastic pressing plate is further arranged between the side of the charging head (2) close to the charging terminal (3) and the accommodating groove (12), and when the elastic pressing plate is pressed, the charging head (2) is opened or put in the accommodating groove (12).

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