Rechargeable battery assembly for personal care device

Abstract

A rechargeable battery assembly used for a personal care device comprises a shell, an installation space is arranged in the shell, and a plurality of through holes are formed in the upper end of the shell; the battery is arranged in the mounting space; a plurality of conductive contacts are arranged on the first circuit board, the first circuit board is arranged at the upper end of the battery, and the conductive contacts are exposed through the through holes; a plurality of conductive columns are arranged on the second circuit board, and the second circuit board is arranged at the lower end of the battery; the bottom cover is arranged at the bottom of the shell and used for sealing the mounting space, a plurality of metal rings which are concentrically arranged are arranged on the bottom cover and make contact with the conductive columns, the first circuit board and the second circuit board are electrically connected through a first metal piece, the first circuit board is electrically connected with the upper end of the battery through a second metal piece, and the second circuit board is electrically connected with the lower end of the battery through a second metal piece. And the first circuit board is electrically connected with the lower end of the battery through a third metal piece. The battery is simple and reliable in structure, independent arrangement of the whole battery is achieved through cooperation of the bottom cover and the shell, and the battery is made to be a whole and convenient to replace.

Description

Technical Field

[0001] This utility model relates to personal care devices, specifically to a rechargeable battery assembly for personal care devices. Background Technology

[0002] Personal care devices such as razors, hair clippers, and nose hair trimmers are generally used as standalone products. However, for portability and ease of use, existing personal care devices have various functions made into corresponding heads, and the functions can be switched by replacing the heads. However, the batteries of existing personal care devices are still integrated into the body. If the battery fails, a new personal care device must be purchased, which is costly.

[0003] In order to achieve battery swapping, ensuring the reliability of battery components is also one of the main directions for improvement. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rechargeable battery assembly for personal care devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rechargeable battery assembly for a personal care device,

[0007] The housing has an internal installation space and several through holes at its upper end;

[0008] The battery is disposed within the mounting space;

[0009] The first circuit board has a plurality of conductive contacts on it, and it is located at the upper end of the battery, and the conductive contacts are exposed through through holes.

[0010] The second circuit board has several conductive posts on it and is located at the lower end of the battery.

[0011] A bottom cover, located at the bottom of the housing, is used to enclose the installation space. The bottom cover has several concentric metal rings that are in contact with the conductive posts.

[0012] The first circuit board and the second circuit board are electrically connected through a first metal component. The first circuit board is electrically connected to the upper end of the battery through a second metal component. The first circuit board is electrically connected to the lower end of the battery through a third metal component.

[0013] The housing includes an outer shell and an inner shell disposed inside the outer shell. The battery is placed inside the inner shell, and the first metal component is located between the inner shell and the outer shell, while the third metal component is located between the inner shell and the battery.

[0014] The outer surface of the inner shell is provided with a number of positioning protrusions along the axial direction, and the first metal part is provided with positioning holes that are adapted to the positioning protrusions.

[0015] The inner wall of the inner shell is provided with a groove for accommodating a third metal part.

[0016] The bottom of the inner shell is provided with several positioning posts.

[0017] The second circuit board is provided with a charging interface, and the bottom cover is provided with an opening adapted to the charging interface.

[0018] One end of the first metal part is set as an insertion end, and the other end is bent to form a slot-like structure that can make electrical contact with the conductive contact.

[0019] The first circuit board is equipped with an LED for charging indication.

[0020] The beneficial effects of this utility model are as follows: by dividing the internal structure of the battery assembly into functional parts, the electrical connection between the battery and each circuit board is realized using metal parts, thereby realizing the charging and discharging management of the battery. At the same time, the gaps at the top and bottom of the battery are used to place the corresponding circuit boards, which makes great use of the internal space. The contact method between the contacts and the metal rings is used to achieve reliable contact of the battery. In addition, the bottom cover and the housing are used to realize the independent setting of the entire battery, making the battery a whole and convenient for replacement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0023] Figure 3 This is a bottom view of the present invention.

[0024] Figure 4 This is a structural schematic diagram of the present invention (shell omitted).

[0025] Figure 5 This is a structural schematic diagram of the present invention (shell omitted).

[0026] Figure 6 This is a schematic diagram of the inner shell of this utility model.

[0027] Figure 7 This is a schematic diagram of the inner shell of this utility model from another direction.

[0028] Figure 8 This is a schematic diagram of the structure of the first metal component.

[0029] Figure 9This is a schematic diagram of the outer shell. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] A rechargeable battery assembly for a personal care device, which mainly functions as a battery to power the personal care device, is pluggably disposed in the handle or grip of the personal care device and is secured by a rotation-locking or snap-locking method.

[0033] Personal care devices can include hair clippers, razors, nose hair trimmers, hair dryers, and shavers.

[0034] like Figure 1 , Figure 2 and Figure 4 As shown, the rechargeable battery assembly includes a housing 100 and a bottom cover. One end of the housing is open, and the bottom cover 500 closes the opening, forming an installation space between the two. The battery 200 is installed in the installation space, and circuit boards are respectively provided at the upper and lower ends of the battery. For example, the first circuit board provided at the upper end is used to carry conductive contacts, indicator circuits, etc. that are electrically connected to the personal care device, while the second circuit board provided at the lower end can be used to carry the charging management circuit and has a conductive structure that is electrically connected to an external charging device.

[0035] The upper part of the housing is closed, with only multiple through holes for the conductive contacts 310 to pass through. The conductive contacts are closed by the through holes, and the whole structure is closed to ensure the cleanliness of the interior and prevent dust and other substances from entering. In some embodiments, the conductive contacts can be directly soldered to the first circuit board 300. In this embodiment, the conductive contacts are embedded in the housing, and their bottoms can form an electrical connection with the first circuit board that is installed in place.

[0036] The second circuit board 400 is located below the battery and has a certain gap with the battery. It is provided with several conductive posts 410. One end of the conductive post is directly soldered to the second circuit board, and the other end is directly in contact with the metal ring. The contact between the two realizes the electrical transmission, which makes disassembly and assembly more convenient. At the same time, in order to adapt to the metal ring, the conductive posts are distributed outward from the center, so that the conductive posts can contact each of the concentrically arranged metal rings, avoiding the occurrence of short circuit. Preferably, there are two conductive posts, located on both sides, and the distance from the two conductive posts to the central axis of the battery assembly is adapted to the radius of the metal ring. That is, one conductive post corresponds to the metal ring with a smaller radius, and the other is set to correspond to the metal ring with a larger radius.

[0037] A bottom cover 500 is located at the bottom of the housing 100. The bottom cover and the housing are connected by a snap-fit ​​mechanism to ensure a reliable connection. A sleeve cover is also provided on the outer side, fitting snugly over the bottom cover. The bottom cover 500 has several concentrically arranged metal rings 510. Figure 3 As shown, the metal ring 510 is in contact with the conductive post 410. In this embodiment, the metal ring is directly embedded in the bottom cover, and both its upper and lower sides are exposed. Thus, the inner side is in contact with the conductive post, and the outer side is electrically connected to the charging device.

[0038] The first circuit board 300 and the second circuit board 400 are electrically connected through a first metal component 600. The first circuit board 300 is electrically connected to the upper end of the battery 200 through a second metal component 700. The first circuit board 300 is electrically connected to the lower end of the battery 200 through a third metal component 800.

[0039] There are two first metal parts, symmetrically arranged, connecting the first circuit board and the second circuit board. This dual design also serves as a safety feature. The first metal part is a long strip of metal, with its lower end bent to form an insertion end 620. The second circuit board has a slot, into which the insertion end is inserted and soldered to achieve electrical connection. The other end is bent to form a slot-like structure 630 that can make electrical contact with the conductive contact 310. The bottom of the slot-like structure has a pin that is electrically connected to the first circuit board, with a slot formed in the middle. The bottom of the conductive contact is inserted into the slot and is restricted by the slot.

[0040] Both the second and third metal parts are made of sheet metal and are connected to the positive terminal of the battery and the first circuit board, respectively, by bending.

[0041] like Figure 5 As shown, the housing 100 includes an outer shell 110 and an inner shell 120 disposed inside the outer shell 110. The battery 200 is placed inside the inner shell 120, and the first metal member 600 is located between the inner shell 120 and the outer shell 110, and the third metal member 800 is located between the inner shell 120 and the battery 200.

[0042] like Figure 6 and Figure 7 As shown, one end of the inner shell 120 is open, and the opening direction is opposite to that of the outer shell. The battery is inserted through the opening, and at the same time, the first circuit board closes the opening, thereby using the inner shell to physically isolate the second circuit board from the lower end of the battery.

[0043] The outer surface of the inner shell 120 is provided with a plurality of positioning protrusions 121 along the axial direction. The first metal part 600 is provided with positioning holes 610 that are adapted to the positioning protrusions 121. The first metal part is tightly attached to the outer wall of the inner shell through the cooperation of the positioning protrusions and the positioning holes.

[0044] The inner shell has a positioning rib 123 on its outer wall, and the outer shell has a positioning groove 111 on its inner wall. Figure 9 As shown, the two achieve positioning, ensuring that the inner shell can be accurately installed and avoiding rework due to incorrect installation direction.

[0045] like Figure 8 As shown, the inner wall of the inner shell 120 is provided with a groove 122 for accommodating the third metal part 800. This groove serves as a space to avoid the third metal part. After the battery is installed in the inner shell, it leaves room for the installation of the third metal part, avoiding the phenomenon of the battery shaking due to being too tight or too loose.

[0046] The bottom of the inner shell 120 is provided with several positioning posts 124. The positioning posts are used to position the second circuit board to ensure the accuracy of its installation position. Preferably, three posts are used to play a positioning role.

[0047] The second circuit board 400 is provided with a charging interface 420, and the bottom cover 600 is provided with an opening adapted to the charging interface 420. The charging interface can be a Type-C interface, located at the center of the second circuit board. By adding a charging interface, the battery can be charged with a charging cable. When a charging device is unavailable, a corresponding charging cable can be used to charge it, thus enabling the battery assembly to use multiple charging methods, such as: 1. Charging the personal care device using a charging dock; 2. Charging the battery assembly using a charging dock; 3. Charging the personal care device using a charging cable; 4. Charging the battery assembly using a charging cable. The difference between methods 1 and 2, and between methods 3 and 4, lies in whether the battery assembly is disassembled for charging.

[0048] The first circuit board 300 is provided with an LED 320 for charging indication, which is used to indicate when the battery assembly is charging alone.

[0049] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A rechargeable battery assembly for a personal care device, characterized in that: A housing (100) having an internal installation space; A battery (200) is disposed within the mounting space; A first circuit board (300) is provided with a plurality of conductive contacts (310) and is located at the upper end of the battery (200); The second circuit board (400) has a plurality of conductive posts (410) on it and is located at the lower end of the battery (200); A bottom cover (500) is located at the bottom of the housing (100) to enclose the installation space. The bottom cover (500) is provided with a plurality of concentric metal rings (510), which are in contact with the conductive posts (410). The first circuit board (300) and the second circuit board (400) are electrically connected through a first metal part (600), the first circuit board (300) is electrically connected to the upper end of the battery (200) through a second metal part (700), and the first circuit board (300) is electrically connected to the lower end of the battery (200) through a third metal part (800).

2. A rechargeable battery assembly for a personal care device according to claim 1, characterized in that: The housing (100) includes an outer shell (110) and an inner shell (120) disposed inside the outer shell (110). The battery (200) is placed inside the inner shell (120), and the first metal piece (600) is located between the inner shell (120) and the outer shell (110), and the third metal piece (800) is located between the inner shell (120) and the battery (200).

3. A rechargeable battery assembly for a personal care device according to claim 2, characterized in that: The outer surface of the inner shell (120) is provided with a plurality of positioning protrusions (121) along the axial direction, and the first metal part (600) is provided with positioning holes (610) that are adapted to the positioning protrusions (121).

4. A rechargeable battery assembly for a personal care device according to claim 2, characterized in that: The inner wall of the inner shell (120) is provided with a groove (122) for accommodating the third metal part (800).

5. A rechargeable battery assembly for a personal care device according to claim 2, characterized in that: The bottom of the inner shell (120) is provided with several positioning posts (124).

6. A rechargeable battery assembly for a personal care device according to claim 1, characterized in that: The second circuit board (400) is provided with a charging interface (420), and the bottom cover (500) is provided with an opening that is compatible with the charging interface (420).

7. A rechargeable battery assembly for a personal care device according to claim 1, characterized in that: One end of the first metal part (600) is set as an insertion end (620), and the other end is bent to form a slot-like structure (630) that can make electrical contact with the conductive contact (310).

8. A rechargeable battery assembly for a personal care device according to claim 1, characterized in that: The first circuit board (300) is provided with an LED (320) for charging indication.

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