Battery pack adapter

Abstract

The utility model discloses a battery pack adapter, which comprises a shell, a battery pack interface, an electric plug interface and a dustproof piece, the shell comprises a concave cavity formed by partially concaving inwards and an opening formed in the bottom wall of the concave cavity, and the opening is right opposite to the electric plug interface; the dustproof part is arranged on the shell and comprises a dustproof main body, the outer contour of the dustproof main body is matched with the contour of the side wall of the concave cavity, and the dustproof main body has a closed state in which the dustproof main body is accommodated in the concave cavity to close the opening and an open state in which the dustproof main body is at least partially separated from the concave cavity to expose the opening; the dustproof body abuts against the side wall of the concave cavity to seal the opening, and an acute angle is formed between the extending plane of the dustproof body and the bottom wall of the concave cavity. Therefore, the sealing effect of the electric socket is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of power adapters, and particularly relates to a battery pack adapter. Background Art

[0002] The existing adapter is provided with a battery pack interface for connecting a battery pack and an electrical plug interface for connecting an external power supply or an electrical device. The battery pack is detachably installed on the battery pack interface and connected to the external power supply or the electrical device through the electrical plug interface, so as to charge the adapter or use the battery pack to charge the external electrical device. However, the electrical plug interface is usually exposed. Since the adapter is usually used on a construction site where there is a lot of dust, it is difficult for the electrical plug interface to resist the intrusion of dust, which easily causes the electrical plug interface to be blocked or damaged.

[0003] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is that the electrical plug interface of the battery pack adapter in the existing technology is easily contaminated.

[0005] To solve the above technical problem, the utility model provides a battery pack adapter, comprising:

[0006] A housing;

[0007] A battery pack interface arranged on the housing for detachably connecting a battery pack;

[0008] An electrical plug interface arranged on the housing for connecting an external power supply or an electrical device, the housing includes a concave cavity formed by partial inward concavity and an opening arranged on the bottom wall of the concave cavity, and the opening is arranged opposite to the electrical plug interface;

[0009] A dust-proof member arranged on the housing, the dust-proof member includes a dust-proof main body, the outer contour of the dust-proof main body matches the side wall contour of the concave cavity, the dust-proof main body has a closed state of being received in the concave cavity to close the opening and an open state of being at least partially separated from the concave cavity to expose the opening. In the closed state, the dust-proof main body abuts against the side wall of the concave cavity to seal the opening, and the extending plane of the dust-proof main body is arranged at an acute angle with the bottom wall of the concave cavity.

[0010] In one embodiment, the housing includes a limiting hole penetrating through it, the dust-proof member further includes a connecting leg connected to the dust-proof main body, the connecting leg includes a leg portion and a foot portion located at the end of the leg portion, the leg portion passes through the limiting hole, the dust-proof main body and the foot portion are respectively located on both sides of the limiting hole, and the size of the foot portion is larger than the passing size of the limiting hole.

[0011] In one embodiment, the limiting hole penetrates through the side wall of the concave cavity opposite to the acute angle. In the closed state, the leg extends longitudinally and passes through the limiting hole.

[0012] In one embodiment, the limiting hole penetrates through the housing wall adjacent to the concave cavity. In the closed state, the leg bends and passes through the limiting hole.

[0013] In one embodiment, a limiting groove is formed by partial inward concavity of the housing. The limiting groove communicates with the concave cavity and the limiting hole. In the closed state, the leg is embedded in the limiting groove, and the outer surface of the leg is substantially flush with the adjacent outer surface of the housing.

[0014] In one embodiment, the housing wall includes a first wall and a second wall arranged at an angle. The concave cavity and the limiting groove are arranged on the first wall, the limiting hole is arranged on the second wall, and the bent portion of the leg is arranged at or near the junction of the first wall and the second wall.

[0015] In one embodiment, the dust-proof member further includes an operation portion arranged on the outer surface of the dust-proof main body, and the operation portion is arranged near the acute angle.

[0016] In one embodiment, the dust-proof member further includes a support wall arranged on the inner side surface of the dust-proof main body. When the dust-proof main body is in the closed state, the support wall abuts against the bottom wall of the concave cavity.

[0017] In one embodiment, the support wall extends along the entire circumference of the dust-proof main body, and the depth of the support wall near the acute angle is less than the depth of the support wall far from the acute angle.

[0018] In one embodiment, a step surface is formed between the support wall and the dust-proof main body. In the closed state, there is a gap between the outer side surface of the support wall and the side wall of the concave cavity.

[0019] The technical solution provided by the present utility model has the following advantages:

[0020] The battery pack adapter provided by the present utility model avoids blockage and damage of the electrical plug interface by providing a concave cavity on the housing, arranging the opening opposite to the electrical plug interface at the bottom wall of the concave cavity, and opening and closing the opening through the dust-proof member. Moreover, the present utility model sets the dust-proof main body for blocking the concave cavity such that its extending plane forms an acute angle with the bottom wall of the concave cavity, thereby forming a cavity with uneven thickness between the dust-proof main body and the concave cavity, which can improve the effect of the dust-proof member in blocking dust and other foreign matters from contaminating the electrical plug interface. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0022] Figure 1 Schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model;

[0023] Figure 2 For Figure 1 Partial exploded view of the battery pack adapter shown;

[0024] Figure 3 For Figure 1 Schematic perspective view of the battery pack adapter with the dust-proof member hidden shown;

[0025] Figure 4 Schematic perspective view of the first half shell of the battery pack adapter provided by the embodiment of the present utility model;

[0026] Figure 5 Partial enlarged view of the battery pack adapter with the first half shell hidden provided by the embodiment of the present utility model;

[0027] Figure 6 Schematic perspective view of the battery pack adapter provided by another embodiment of the present utility model;

[0028] Figure 7 For Figure 6 Partial exploded view of the battery pack adapter shown;

[0029] Figure 8 For Figure 6 Partial enlarged view of a cross-sectional structure of the battery pack adapter shown;

[0030] Figure 9 For Figure 6 Schematic perspective view of the dust-proof member from another perspective shown. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0032] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0033] In the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "top", "bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0034] Embodiment 1

[0035] This embodiment provides a battery pack adapter (which can also be simply referred to as an adapter) for connecting a battery pack to charge the battery pack or use the electric energy of the battery pack to charge an external electrical device. Figure 1 It is a schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model. Figure 2 is Figure 1 The schematic perspective view of the battery pack adapter shown in the decomposed state of its dust-proof member. Figure 3 is Figure 1 The schematic perspective view of the battery pack adapter shown in hiding the dust-proof member. Please refer to Figure 1 、 Figure 2 The battery pack adapter includes a housing 10, a battery pack interface 30, an electrical plug interface 20 and a dust-proof member 40.

[0036] The battery pack interface 30 is provided on the housing 10 and located on the outer surface of the housing 10. The battery pack interface 30 is used for detachably plugging with a battery pack (not shown). The electrical plug interface 20 is provided inside the housing 10 for plugging with an external connector. Among them, the external connector is one end of an external electrical connector, and the external electrical connector is used to connect the battery pack adapter and an external power source or an external electrical device. In one implementation scenario, the other end of the external connector is connected to a power source, and the power source charges the battery pack through the battery pack adapter. In another implementation scenario, the other end of the external connector is connected to an electrical device, and the battery pack charges the external electrical device through the adapter. The external electrical device can be a mobile device such as a mobile phone, a tablet computer, a smartwatch, etc.

[0037] Specifically, the battery pack interface 30 includes an electrode seat 31 and an opening 32 provided opposite to the electrode seat 31. The opening 32 is used for the battery pack to pass through to plug with the electrode seat 21. Specifically, the opening 32 is an open port formed on one side of the housing 10, and the battery pack plugs with the electrode seat 31 along the direction from the opening 32 to the electrode seat 31.

[0038] For the purpose of easy explanation, one side of the housing 10 where the battery pack interface 30 is located is defined as the bottom surface of the housing 10, the direction perpendicular to the bottom surface of the housing 10 is defined as the height direction of the housing 10, the direction in which the battery pack interface 30 is adapted to be inserted into the battery pack is defined as the length direction of the housing 10, and the direction perpendicular to the length and height directions is defined as the width direction. In this embodiment, the dimension of the housing 10 in the length direction is greater than the dimension in the width direction.

[0039] The battery pack interface 30 attaches the battery pack in a sliding manner. Specifically, the battery pack interface 30 includes two parallel slide rails extending along the length direction of the housing 10. Correspondingly, two matching chutes are provided on the battery pack, and the length of the chute is substantially the same as that of the slide rail. Align the two slide rails with the chutes on the battery pack and apply a thrust along the direction of the slide rail, so that the battery pack can be inserted into the battery pack interface along the slide rail and dock with the electrode seat 31, realizing the sliding plug-in connection between the battery pack and the adapter.

[0040] Please refer to Figures 2 and Figure 3 As shown, the housing 10 includes a concave cavity 12 formed by partial inward concavity and an opening 14 provided on the bottom wall 125 of the concave cavity 12. The opening 14 is disposed opposite to the electrical plug interface 20, and an external connector can pass through the opening 14 to be plugged into the electrical plug interface 20, so that the electrical plug interface 20 is electrically connected to an external electrical device or power source through the external connector. It can be understood that the size of the opening 14 matches the size of the electrical plug interface 20, that is, the opening 14 is the same size as the electrical plug interface 20, or the opening 14 is slightly larger than the size of the electrical plug interface 20 to facilitate the connection between the external connector and the electrical plug interface 20 through the opening 14. In this embodiment, the electrical plug interface 20 is a USB interface, and the corresponding external connector is a USB connector docked with the USB interface. The electrical plug interface 20 can also be other forms of interfaces, such as a Type-C interface. The present utility model does not limit the specific type of the electrical plug interface.

[0041] The dust-proof member 40 is used to cover the opening 14 to prevent dust and other foreign objects from contaminating the electrical plug interface 20 through the opening 14. The dust-proof member 40 is disposed on the housing 10 and includes a dust-proof main body 41 for plugging the concave cavity 12. Specifically, the outer contour of the dust-proof main body 41 matches the side wall contour of the concave cavity 12, and the dust-proof main body 41 has a closed state of being received in the concave cavity 12 to close the opening 14 and an open state of being at least partially separated from the concave cavity 12 to expose the opening 14. Please refer to Figure 5 As shown, in the closed state, the dust-proof main body 41 abuts against the side wall of the concave cavity 12 to seal the opening 14, and the extending plane of the dust-proof main body 41 is disposed at an acute angle A with the bottom wall 125 of the concave cavity 12. That is to say, the dust-proof main body 41 is not parallel to the bottom wall 125, and an acute angle A is formed between the two.

[0042] In an open state, the dust-proof main body 41 is completely disengaged from the concave cavity 12, and the entire dust-proof main body 41 is located outside the concave cavity 12. The concave cavity 12 and the bottom wall 125 are completely exposed, and the user can plug an external connector into the electrical plug interface 20. In another open state, the dust-proof main body 41 is partially disengaged from the concave cavity 12, a part of the dust-proof main body 41 is still located in the concave cavity 12, a part or all of the bottom wall 125 of the concave cavity 12 is exposed, and the opening 14 is completely exposed. The user can plug the external connector into the electrical plug interface 20 through the concave cavity 12.

[0043] For the battery pack adapter provided in this embodiment, by providing a concave cavity on the housing, the opening facing the electrical plug interface is arranged on the bottom wall of the concave cavity, and the opening is opened and closed by a dust-proof member, so as to avoid blockage and damage of the electrical plug interface. Moreover, in the present utility model, the dust-proof main body used to block the concave cavity is arranged such that its extended plane forms an acute angle with the bottom wall of the concave cavity, thereby forming a cavity with uneven thickness between the dust-proof main body and the concave cavity, which can improve the effect of the dust-proof member in blocking foreign matters such as dust from contaminating the electrical plug interface. Compared with the housing, the dust-proof main body is made of a soft material, so as to facilitate the opening and closing operations of the dust-proof main body. The dust-proof main body is arranged such that its extended plane forms an acute angle with the bottom wall of the concave cavity, so that the dust-proof main body on the acute angle side is closer to the bottom wall of the concave cavity. The entire dust-proof main body can be more stably supported in the closed state and can also be more stably stressed during the opening operation, so as to more smoothly switch from the closed state to the open state.

[0044] The dust-proof member is a small part. Whether in the closed state or the open state, the dust-proof member 40 is connected to the housing 10, so as to avoid the problem of loss caused by separately setting the dust-proof member 40. Please refer to Figure 2 and Figure 3 As shown in the figure, in an embodiment, the housing 10 includes a through-limiting hole 18. The dust-proof member 40 further includes a connecting leg 42 connected to the dust-proof main body 41. The connecting leg 42 includes a leg portion 421 connected to the dust-proof main body 41 at one end and a foot portion 423 located at the other end of the leg portion 421. The leg portion 423 passes through the limiting hole 18, and the dust-proof main body 41 and the foot portion 423 are respectively located on both sides of the limiting hole 18. The size of the foot portion 423 is larger than the passing size of the limiting hole 18. The leg portion 421 has a certain length, so as to allow the dust-proof main body 41 to move outward relative to the concave cavity 12 by a certain distance, facilitating at least partial disengagement of the dust-proof main body 41 from the concave cavity 12 to expose the opening 14. The foot portion 423 cannot pass through the limiting hole 18, which can maintain the connection relationship between the dust-proof member 40 and the housing 10 and avoid the trouble of loss caused by the complete disengagement of the dust-proof member 40 from the housing 10.

[0045] In an embodiment, please refer to Figure 3 and Figure 5As shown, the concave cavity 12 includes a side wall 123 opposite to the acute angle A. The limiting hole 18 penetrates through the side wall 123 of the concave cavity 12 opposite to the acute angle. In the closed state, the leg 423 extends longitudinally and passes through the limiting hole 18. Since the area of the side wall of the concave cavity 12 opposite to the acute angle A is relatively large, there is sufficient space to set the limiting hole 18, which improves the flexibility of the size design of the limiting hole 18.

[0046] For the purpose of easy explanation, one side wall of the concave cavity 12 close to the battery pack interface 30 is defined as the lower side wall, and the other side wall opposite to the lower side wall is defined as the upper side wall. Among them, the side wall 123 opposite to the acute angle A is the lower side wall. Therefore, the side wall 123 is also called the lower side wall, and the one opposite to the (lower) side wall 123 is the upper side wall 121. The area of the lower side wall 123 is larger than that of the upper side wall 121, and the acute angle A is close to the upper side wall 121.

[0047] Preferably, the dust-proof member 40 is made of an elastic material, so that the dust-proof member 40 itself has a certain elastic deformation ability. Specifically, the dust-proof main body 41 is slightly larger than the size of the concave cavity 12, so as to be pressed against the side wall of the concave cavity 12 in the closed state to form a sealed contact. The dust-proof member 40 is made of an elastic material, and the leg 423 can be squeezed into and pass through the limiting hole 18 by deforming, and then restore the shape of the natural leg 423, so that it can abut against the inner surface of the limiting hole 18 to prevent it from coming out. Exemplarily, the dust-proof member can be made of rubber or soft resin.

[0048] For the convenience of the opening and closing operations of the dust-proof member, in one embodiment, please refer to Figure 2 and Figure 5 , the dust-proof member 40 further includes an operation part 43 arranged on the outer surface of the dust-proof main body 41. The operation part 43 is arranged close to the acute angle A, and the operation part 43 can be better stressed, so that the dust-proof member 40 can be opened more easily. At the same time, as described above, the acute angle A is close to the upper side wall 121, and the limiting hole 18 for the leg 421 of the connecting leg 42 to pass through is arranged on the lower side wall. Therefore, the operation part 43 is located on the outer surface of the dust-proof main body 41 away from the connecting leg 421. The operation part 43 is arranged away from the connecting leg 421, that is, the operation part 43 is away from one end of the dust-proof main body 41 connected to the housing 10. At this end, the dust-proof main body 41 has a greater degree of freedom of movement, which is more convenient for the opening operation of the dust-proof main body 41. Specifically, the operation part 43 is configured as a protruding part protruding from the dust-proof main body 41, which is convenient for fingers to hold. The operation part can also be configured as an inwardly concave buckle groove, and fingers or nails can buckle the buckle groove to pull the dust-proof main body outwards. The structure of the operation part in this embodiment is not limited.

[0049] In a specific embodiment, please refer to Figure 3 and Figure 4As shown, the housing 10 includes a first half-shell 13 and a second half-shell 15. The first half-shell 13 and the second half-shell 15 are joined together along the width direction of the housing 10. The opening 14 and the limiting hole 18 are both formed at the mating seam of the first half-shell 13 and the second half-shell 15. Specifically, the structures of the first half-shell 13 and the second half-shell 15 are substantially the same and are approximately symmetric about the mating surface. The housing is designed with a half-shell structure, and the opening and the limiting hole are both formed at the mating seam of the first half-shell and the second half-shell, which is convenient for structure forming and assembly.

[0050] Embodiment 2

[0051] The present utility model further provides a battery pack adapter (which can also be simply referred to as an adapter) for connecting a battery pack to charge the battery pack or use the electric energy of the battery pack to charge an external electrical device. Please refer to Figure 6 and Figure 7 As shown, the battery pack adapter includes a housing 10a, a battery pack interface (not shown), an electrical plug interface 20, and a dust-proof member 40a. Among them, the battery pack interface and the electrical plug interface 20 are the same as those in Embodiment 1. For the same structures, the same reference numerals are used, and details will not be repeated here. The difference between the housing 10a and that in Embodiment 1 mainly lies in the structure cooperating with the dust-proof member 40a. For other structures of the housing 10a, reference can also be made to Embodiment 1, and the same structures are denoted by the same reference numerals and will not be elaborated.

[0052] The following focuses on introducing the structure of the dust-proof member 40a and the housing 10a cooperating with the dust-proof member 40a.

[0053] The housing 10a includes a concave cavity 12a and a limiting hole 18a. Please combine Figure 7 and Figure 8 , the concave cavity 12a is formed by partial inward recess of the housing 10a. The concave cavity 12a includes a bottom wall 125a, a lower side wall 123a, and an upper side wall 121a. The opening 14 is provided on the bottom wall 125a, and the opening 14 is directly opposite to the electrical plug interface 20. The limiting hole 18a penetrates the housing wall adjacent to the concave cavity 12a. Specifically, the limiting hole 18a penetrates the housing wall adjacent to the lower side wall 123a of the concave cavity 12a.

[0054] The dust-proof member 40a includes a dust-proof main body 41 and a connecting leg 42a connected to the dust-proof main body 41. The connecting leg 42a includes a leg portion 421a and a foot portion 423a located at the end of the leg portion 421a. The leg portion 423a passes through the limiting hole 18a. The dust-proof main body 41 and the foot portion 423a are respectively located on both sides of the limiting hole 18a. The size of the foot portion 423a is larger than the passing size of the limiting hole 18a. The leg portion 421a has a certain length, so that the dust-proof main body 41 can move outward relative to the concave cavity 12a by a certain distance to at least partially disengage from the concave cavity 12a and expose the opening 14. The foot portion 423a cannot pass through the limiting hole 18a, which can maintain the connection relationship between the dust-proof member 40a and the housing 10a and avoid the trouble of the dust-proof member 40a falling off the housing 10a and getting lost.

[0055] The dust-proof member 40a further includes an operation portion 43. Among them, the operation portion 43 and the dust-proof main body 41 can refer to the content of part of Embodiment 1 and will not be elaborated here.

[0056] One of the key differences between the dust-proof member 40a provided in this embodiment and the dust-proof member 40 provided in Embodiment 1 lies in the shape and structure of the connecting leg 42a. In this embodiment, the limiting hole 18a is provided in the housing wall adjacent to the concave cavity 12a. In the closed state, the leg portion 421a is bent and passes through the limiting hole 18a. Such a setting makes the degree of separation between the dust-proof member 40a and the concave cavity 12a greater. In the open state, the space in front of the concave cavity 12a is more open, and the dust-proof member 40a will not block the insertion path of the concave cavity 12a, facilitating the connection operation of the external joint.

[0057] For the sake of the beauty of the adapter's appearance, in one embodiment, a limiting groove 19 is formed by partial inward concavity of the wall of the housing 10a. The limiting groove 19 communicates with the concave cavity 12a and the limiting hole 18a. In the closed state, the leg portion 421a is embedded in the limiting groove 19, and the outer surface of the leg portion 421a is substantially flush with the outer surface of the adjacent housing 10a. In this way, the leg portion is received in the limiting groove and will not protrude from the housing surface, making the appearance more beautiful. The limiting hole 18a penetrates the housing 10a, and the depth of the inward concavity of the limiting groove 19 accounts for about half of the thickness of the housing 10a. While being beautiful, the structural layout is reasonable.

[0058] In order to make the opening degree of the dust-proof member 40 larger and facilitate the insertion of the external joint, in one embodiment, please refer to Figure 7As shown, the housing wall includes a first wall 11a and a second wall 16a arranged at an angle. The concave cavity 12a and the limiting groove 19 are provided on the first wall 11a, and the limiting hole 18a is provided on the second wall 16a. The bent portion of the leg 421a is arranged at or near the junction of the first wall 11a and the second wall 16a. By arranging the limiting hole 18a on the second wall 16a and arranging the bent portion of the leg 421a at or near the junction of the first wall 11a and the second wall 16a, the movable angle of the dust-proof member 40a from the closed state to the open position can be larger, ensuring that the concave cavity 12a can be completely exposed in the open position, facilitating the smoother connection of the external joint.

[0059] To improve the sealing effect, in a specific embodiment, please refer to Figure 7 and Figure 8 , the dust-proof member 40a further includes a support wall 44 provided on the inner surface of the dust-proof main body 41. When the dust-proof main body 41 is in the closed state, the support wall 44 abuts against the bottom wall 125a of the concave cavity 12a. The support wall 44 forms an isolation barrier between the opening 14 and the side wall of the concave cavity 12a, further ensuring the sealing effect. At the same time, due to the abutment of the support wall 44 against the bottom wall 125a, the positioning of the dust-proof member 40a in the concave cavity 12a is more reliable and stable, enhancing the structural strength of the dust-proof member 40a.

[0060] Specifically, the support wall 44 extends along the entire circumference of the dust-proof main body 41, and the depth of the support wall 44 near the acute angle A is less than the depth of the support wall 44 far from the acute angle A. It should be noted that the depth of the support wall 44 is the length by which the support wall 44 protrudes from the dust-proof main body 41. The support wall 44 extending along the entire circumference of the dust-proof main body 41 can form an isolation in the circumferential direction between the opening 14 and the side wall of the concave cavity, thus ensuring the comprehensiveness of the sealing. The depth of the support wall 44 matches the depth of the concave cavity 12a, making the dust-proof member more stably and reliably received in the concave cavity 12a.

[0061] To facilitate the separation of the dust-proof member 40a from the concave cavity 12a, in an embodiment, please refer to Figure 9 As shown, a step surface 47 is formed between the support wall 44 and the dust-proof main body 41. In the closed state, there is a gap between the outer surface of the support wall 44 and the side wall of the concave cavity 12a. That is to say, within the range where the support wall 44 is connected to the inner surface of the dust-proof main body 41, a step transition is formed at the adjacent position with the dust-proof main body 41. The step transition makes the support wall 44 slightly smaller than the opening size of the concave cavity 12a. In the closed state, the support wall 44 does not contact the side wall of the concave cavity 12a, and will not increase the resistance to the separation and disengagement of the dust-proof member 40a from the concave cavity 12a, thus facilitating the opening operation of the dust-proof member 40a.

[0062] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, those of ordinary skill in the art can make other different forms of changes or modifications without creative efforts, and all of them should fall within the protection scope of the present utility model.

Claims

1. A battery pack adapter, characterized in that: include: case; A battery pack interface, provided on the housing, for detachably connecting the battery pack; An electrical plug interface, arranged on the housing, for connecting an external power source or an electrical device, wherein the housing comprises a concave cavity formed by a partial inward concave portion and an opening arranged on the bottom wall of the concave cavity, wherein the opening is arranged opposite to the electrical plug interface; A dustproof part is arranged on the shell, and the dustproof part includes a dustproof main body. The outer contour of the dustproof main body matches the side wall contour of the concave cavity. The dustproof main body has a closed state in which it is accommodated in the concave cavity to close the opening, and an open state in which it is at least partially separated from the concave cavity to expose the opening. In the closed state, the dustproof main body abuts against the side wall of the concave cavity to seal the opening, and the extension plane of the dustproof main body is arranged at an acute angle to the bottom wall of the concave cavity.

2. The battery pack adapter according to claim 1, wherein: The shell includes a limiting hole set through it, and the dustproof part also includes a connecting leg connected to the dustproof main body, the connecting leg includes a leg and a foot located at the end of the leg, the leg passes through the limiting hole, the dustproof main body and the foot are respectively located on both sides of the limiting hole, and the size of the foot is larger than the passing size of the limiting hole.

3. The battery pack adapter according to claim 2, wherein: The limiting hole passes through the side wall of the cavity opposite to the acute angle, and in the closed state, the leg portion extends longitudinally and passes through the limiting hole.

4. The battery pack adapter according to claim 2, wherein: The limiting hole passes through the shell wall adjacent to the concave cavity, and in the closed state, the leg portion is bent and passes through the limiting hole.

5. The battery pack adapter according to claim 4, wherein: The shell is partially concave to form a limiting groove, which is connected to the cavity and the limiting hole. In the closed state, the leg is embedded in the limiting groove, and the outer surface of the leg is roughly flush with the adjacent outer surface of the shell.

6. The battery pack adapter according to claim 5, characterized in that: The shell wall includes a first wall and a second wall arranged at an angle, the concave cavity and the limiting groove are arranged on the first wall, the limiting hole is arranged on the second wall, and the bent portion of the leg is arranged at or adjacent to the intersection of the first wall and the second wall.

7. The battery pack adapter according to claim 1, wherein: The dustproof part further includes an operating portion arranged on the outer surface of the dustproof body, and the operating portion is arranged close to the acute angle.

8. The battery pack adapter according to claim 1, wherein: The dustproof member further comprises a supporting wall arranged on the inner surface of the dustproof body. When the dustproof body is in the closed state, the supporting wall abuts against the bottom wall of the cavity.

9. The battery pack adapter according to claim 8, wherein: The support wall extends along the entire circumference of the dustproof body, and the depth of the support wall close to the acute angle is smaller than the depth of the support wall far from the acute angle.

10. The battery pack adapter according to claim 8, wherein: A step surface is formed between the support wall and the dustproof body. In the closed state, a gap exists between the outer surface of the support wall and the side wall of the concave cavity.

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