Hair clippers with replaceable batteries

Abstract

The present invention discloses a hair clipper with replaceable batteries, comprising: an outer shell, an inner shell, the bottom surface of the inner shell being detachably provided with a bottom cover for fixing the bottom cover to the inner shell; a battery pack disposed in the cavity of the inner shell, which can be pushed into the interior of the inner shell from the bottom surface of the inner shell after the bottom cover is removed; the battery pack comprising a battery box, a battery, a battery circuit board, and a battery cover, the battery being disposed inside the battery box, the battery cover being detachably mounted on the lower end surface of the battery box, and the battery cover being electrically connected to the battery. The lower end of the battery pack automatically pops out of the inner shell, and the battery pack can be conveniently removed from the inner shell for separate charging. The battery pack is detachable, and when a problem occurs with the battery in the battery box, the battery cover can be removed to simply replace the battery, thereby reasonably saving costs, avoiding waste of resources, and effectively extending the service life of the product.

Description

Technical Field

[0001] The present invention relates to a hair cutting tool, in particular to a hair cutting scissors with replaceable batteries. Background Art

[0002] Generally, the battery of hair clippers on the market is built into the whole machine. When there is a problem with the battery, it is generally not easy for users to disassemble the whole machine for replacement. Instead, the whole machine is discarded. However, other parts of the hair clippers, especially the more expensive hair cutting components, are not damaged. Directly discarding the whole machine will cause waste of resources and pollute the environment.

[0003] On the other hand, when charging clippers with an integrated battery, the entire device needs to be charged together. This reduces the heat dissipation area of ​​the battery, causing it to overheat and adversely affect other internal components of the clippers. Furthermore, the clippers are inconvenient to use while charging, and frequently used barbershops often require multiple clippers for alternating use. Therefore, clippers with a battery case that can be easily removed for charging can effectively address these issues. Removing the battery case for separate charging offers the advantage of improved heat dissipation. Furthermore, with two battery cases, the clippers can be used interchangeably, eliminating the need for multiple clippers and saving costs. Summary of the Invention

[0004] The present invention discloses a hair clipper with replaceable batteries, which can be fully charged. The battery is installed in a battery box. The battery, battery box, and battery cover form a battery pack. When charging, the battery pack can be conveniently removed and charged separately, which is beneficial to the heat dissipation of the battery. The battery cover in the battery pack is removable. When the battery or circuit board in the battery pack is damaged, it is not necessary to discard the entire battery pack. Only the damaged battery or other components need to be replaced. The battery pack of the present invention only replaces the damaged parts, which can maximize resource conservation. The hair clipper is easy to use and has a simple structure.

[0005] The technical solutions of the present invention are as follows:

[0006] A hair clipper with replaceable batteries, comprising: an outer shell, which is an elongated hollow cylinder, with at least one control button provided on its side wall; an inner shell, nested within the outer shell, with a haircutting assembly provided on the upper end of the outer shell, and a detachable bottom cover provided on the bottom surface of the inner shell for sealing the bottom surface of the inner shell; a battery pack, disposed in the cavity of the inner shell, which can be pushed into the interior of the inner shell from the bottom surface of the inner shell after the bottom cover is removed; the battery pack comprising a battery box, batteries, and a battery cover, the batteries being disposed within the battery box, the battery cover being detachably mounted on the lower end surface of the battery box, and the battery cover being electrically connected to the batteries.

[0007] Furthermore, the bottom cover includes a side wall and a bottom surface, the inner side of the side wall is provided with a thread, and is rotatably connected to the lower end of the inner shell through a matching thread, and a circular hole is provided in the center of the bottom surface.

[0008] Furthermore, the inner shell includes a front cover and a rear cover that cooperate with each other to form a hollow cylinder. Within the cavity of the inner shell, a motor, battery contacts and a battery pack that are in contact with each other are arranged in sequence from top to bottom. The rotating shaft of the motor extends axially to the outside of the inner shell and is connected to the hairdressing component. A battery contact is provided on the lower end face of the motor, and the battery contact is electrically connected to the lower end face of the motor through a locking groove.

[0009] Furthermore, the battery contact includes a card and an elastic sheet, the card is inserted into the card slot, the elastic sheet is a thin sheet bent into a "V", and the elastic sheet can pop one end of the battery pack out of the inner shell.

[0010] Furthermore, a long raised positioning block is provided on the side wall of the battery box, and the positioning block extends upward along the side wall axially for a distance starting from one end of the battery cover. The bottom plane of the front cover of the inner shell is provided with a groove matching the positioning block, which can position the battery pack and push it into the inner shell cavity.

[0011] Furthermore, a charging hole and an indicator light are provided on the bottom surface of the battery cover.

[0012] Furthermore, a plurality of clamping posts perpendicular to the bottom surface are provided at the inner outer diameter of the bottom surface of the battery cover, and a protrusion is provided at the upper end of the clamping post in the horizontal direction. A plurality of through holes corresponding to the number and position of the clamping posts are provided on the side wall of the battery box, and the protrusion is inserted into the through hole to fix the battery cover to the bottom surface of the battery box.

[0013] Furthermore, at least one support column is provided on the inner side of the bottom surface of the battery cover. After the battery cover is installed, the top end of the support column contacts the bottom surface of the battery.

[0014] Furthermore, a battery circuit board is provided on the inner side wall of the battery box for electrically connecting the battery and the battery cover.

[0015] The beneficial effects of the present invention are:

[0016] After rotating the bottom cover to open, the lower end of the battery pack automatically pops out of the inner shell due to the installation of battery contacts. The battery pack can be easily removed from the inner shell and charged separately. After removing the battery pack from the entire machine, the battery pack has a large heat dissipation area, which eliminates the risk of battery overheating and explosion, effectively ensuring personal safety. The battery pack is detachable. When there is a problem with the battery in the battery box, you only need to replace the battery by removing the battery cover, which reasonably saves costs, avoids waste of resources, and effectively extends the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a hair clipper with replaceable batteries according to the present invention;

[0018] Figure 2 This is a schematic diagram of the inner shell structure of a hair clipper with replaceable batteries according to the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the inner shell of a hair clipper with replaceable batteries according to the present invention;

[0020] Figure 4 This is a schematic structural diagram of a bottom cover of a hair clipper with replaceable batteries according to the present invention;

[0021] Figure 5 This is a schematic structural diagram of a battery pack for hair clippers with replaceable batteries according to the present invention;

[0022] Figure 6 This is a schematic diagram of the internal structure of a battery pack of a hair clipper with replaceable batteries according to the present invention;

[0023] Figure 7 This is a schematic diagram of the battery cover structure of a hair clipper with replaceable batteries according to the present invention;

[0024] Figure 8 This is a schematic diagram of the battery contact structure of a hair clipper with replaceable batteries according to the present invention;

[0025] Figure 9 This is a schematic diagram of the retaining slot in the rear cover of a hair clipper with replaceable batteries according to the present invention.

[0026] In the figure, 1. outer shell, 2. inner shell, 3. battery pack, 4. hair cutting component, 5. motor, 6. battery contact, 7. battery circuit board, 8. slot, 11. power switch, 21. bottom cover, 22. thread, 23. front cover, 24. back cover, 31. battery box, 32. battery, 33. battery cover, 61. card, 62. elastic sheet, 311. through hole, 312. positioning block, 331. charging port, 332. indicator light, 333. card column, 334. support column, 621. first elastic sheet, 622. second elastic sheet. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more specific, the present invention is further described in the upper part below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention fall within the scope of protection of the present invention. Example 1

[0028] A barber clipper with a replaceable battery comprises an elongated outer shell 1, preferably a cylinder with a length and cross-section suitable for easy gripping by the user. A power switch 11 is provided on the side wall of the outer shell, and a control button may also be provided for adjusting the motor speed, allowing for selection of different speeds as needed. The lower end of the outer shell is a removable bottom cover 21, which can be attached to the inner shell of the clipper using threads, snaps, or other means. Preferably, threads 22 are provided on the inner side wall of the bottom cover, which rotates to the lower end of the inner shell via matching threads. When the bottom cover is installed, the outer wall of the bottom cover is substantially flush with the outer shell, resulting in an aesthetically pleasing appearance. Vertical textures are also provided on the side wall of the bottom cover to increase friction when rotating the bottom cover, facilitating its removal. A circular hole is located in the center of the bottom surface of the bottom cover, through which the charging port 331 and indicator light 332 on the battery cover are exposed. The charging port and indicator light are electrically connected to the battery. The charging port can be a USB port or other standard charging port. During the battery charging process, the indicator light keeps flashing. When charging is completed, the indicator light turns green and stays on.

[0029] Nested within the outer shell is the inner housing 2 of the hair clipper. The inner housing is longer than the outer shell, with threads at its lower end extending beyond the outer shell matching the bottom cover. The upper end of the inner housing is connected to the hair clip assembly 4. The inner housing comprises a front cover 23 and a rear cover 24 that fit together to form a hollow cylinder. These two covers are securely connected via a snap-fit ​​mechanism. The sidewalls of the front cover have button holes corresponding to the control buttons on the outer shell. These holes correspond to the control keys on the circuit board mounted within the inner housing.

[0030] Inside the cavity of the inner shell, a motor 5, a battery contact 6 and a battery pack 3 are arranged in sequence from top to bottom, and the motor's rotating shaft extends axially outside the inner shell and is connected to the hairdressing component. The lower end surface of the motor is provided with at least one battery contact, preferably two, and the battery contact is electrically connected to the lower end surface of the motor through a locking groove 8.

[0031] Specifically, the battery contacts are preferably aluminum sheets and include a card 61 and an elastic sheet 62. The card is a horizontally long, thin sheet with one end bent downward and extended to form a "V"-shaped elastic sheet. In other words, one end of the "V"-shaped elastic sheet is connected to one end of the card, serving as the first elastic sheet 621, while the other end is suspended in the air, serving as the second elastic sheet 622. When the second elastic sheet is squeezed by an external force, it can move toward the first elastic sheet, causing the first and second elastic sheets to overlap. When the external force is released, the first and second elastic sheets separate, forming a "V" shape. Therefore, after removing the bottom cover, one end of the battery pack is immediately ejected to the outside of the inner shell by the elastic sheet, making it easy to remove the battery pack from the inner shell.

[0032] The card of the battery contact is inserted into the card slot 8. The card slot is fixed on the side wall of the inner shell and is perpendicular to the side wall. The card slot is composed of several metal plates. The upper surface contacts the motor and there are "U"-shaped grooves on the opposite sides. The width between the "U"-shaped grooves is the width of the card. Insert the card into the groove and the battery contact is fixed to the card slot.

[0033] In the inner shell, the battery pack is tightly combined with the battery contacts. After removing the bottom cover, the battery pack is pushed into the interior of the inner shell from the bottom surface of the inner shell; the battery pack includes a battery box, a battery and a battery cover. The battery is arranged inside the battery box, and the battery cover is detachably installed on the lower end surface of the battery box. The battery cover and the battery are electrically connected.

[0034] Specifically, a long, raised positioning block 312 is provided on the side wall of the battery box. The positioning block extends upward along the side wall axially for a distance starting from one end of the battery cover. Correspondingly, a groove matching the positioning block is provided on the bottom plane of the front cover of the inner shell, which can position the battery pack and push it into the inner shell cavity.

[0035] The bottom of the battery cover is provided with a charging port 331 and an indicator light 332. After removing the battery pack from the inner shell, it can be charged separately. The color of the indicator light indicates that the battery pack is ready for use after charging is complete. If multiple battery packs are configured, when the hair clipper runs out of power, only the battery pack needs to be replaced, and it can be used for a long time.

[0036] Several latches 333 are provided perpendicular to the bottom surface of the battery cover at the inner outer diameter of the bottom surface. Preferably, three latches are evenly spaced in the circumferential direction. The upper ends of the latches are provided with horizontal protrusions, with the upper surface of the protrusions being an inclined surface and the lower surface being a flat surface. The side walls of the battery compartment are provided with several through-holes 311 corresponding in number and position to the latches. The shape and size of the through-holes match the protrusions, and the protrusions snap into the through-holes to secure the battery cover to the bottom surface of the battery compartment. Because the upper surface of the protrusions is an inclined surface, the protrusions can easily slide into the through-holes in the side wall of the battery compartment when the battery cover is pushed into the battery compartment. Because the lower surface of the protrusions is a flat surface, the battery cover is unlikely to slide out of the battery compartment unless subjected to external forces. When the battery needs to be replaced, push the battery cover upwards forcefully and slide it out of the battery box. Remove the battery cover and take out the battery in the battery box before replacing it. If the circuit board in the battery pack is damaged, it can also be removed and replaced. Other components in the battery pack do not need to be replaced, thus saving resources to the maximum extent possible.

[0037] At least one support post 334, preferably two, is provided on the inner side of the bottom surface of the battery cover. The height of the support post is greater than that of the retaining post. When the battery cover is installed, the top of the support post contacts the bottom surface of the battery, securing the battery in the battery compartment. A battery circuit board 7 is provided on the inner side wall of the battery compartment to electrically connect the battery to the battery cover.

[0038] The specific embodiments of the present invention are described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A hair clipper with replaceable batteries, characterized in that: include: The housing is a long hollow cylinder with at least one control button provided on its side wall; An inner shell is nested in the outer shell, a haircutting assembly is provided on the upper end of the outer shell, and a bottom cover is detachably provided on the bottom surface of the inner shell for fixing the bottom cover to the inner shell; A battery pack is disposed in the cavity of the inner shell. After removing the bottom cover, the battery pack is pushed into the interior of the inner shell from the bottom surface of the inner shell. The battery pack includes a battery box, a battery, a battery circuit board, and a battery cover. The battery is disposed in the battery box. The battery cover is detachably mounted on the lower end surface of the battery box. The battery cover and the battery are electrically connected. A plurality of clamping posts perpendicular to the bottom surface are provided on the inner outer diameter of the bottom surface of the battery cover, and a protrusion is provided on the upper end of the clamping post in the horizontal direction. A plurality of through holes corresponding to the number and position of the clamping posts are provided on the side wall of the battery box, and the protrusions are inserted into the through holes to fix the battery cover to the bottom surface of the battery box; At least one support column is provided on the inner side of the bottom surface of the battery cover, and after the battery cover is installed, the top end of the support column contacts the bottom surface of the battery; The inner shell includes a front cover and a rear cover that cooperate with each other to form a hollow cylinder. The inner shell cavity is provided with a motor, a battery contact, and a battery pack that are in contact with each other from top to bottom. The motor's rotating shaft extends axially outside the inner shell and is connected to the hair cutting assembly. The lower end surface of the motor is provided with a battery contact, and the battery contact is electrically connected to the lower end surface of the motor through a retaining groove. The battery contact includes a card and an elastic sheet. The card is inserted into the card slot. The card slot is fixed to the side wall of the inner shell and is perpendicular to the side wall. The upper surface contacts the motor. The opposite sides have "U"-shaped grooves. The width between the "U"-shaped grooves is the width of the card. The card is inserted into the groove. The elastic sheet is a thin sheet bent into a "V". The elastic sheet can pop one end of the battery pack out of the inner shell. One end of the "V"-shaped elastic piece is connected to one end of the card, serving as a first elastic piece, and the other end is suspended in the air, serving as a second elastic piece.

2. The hair clippers according to claim 1, characterized in that: The bottom cover includes a side wall and a bottom surface. The inner side of the side wall is provided with a thread and is rotatably connected to the lower end of the inner shell through a matching thread. A circular hole is left in the center of the bottom surface.

3. The hair clippers according to claim 1, characterized in that: A long, raised positioning block is provided on the side wall of the battery box. The positioning block extends axially upward along the side wall from one end of the battery cover for a distance. A groove matching the positioning block is provided on the bottom plane of the front cover of the inner shell, which can position the battery pack and push it into the inner shell cavity.

4. The hair clippers according to claim 1, characterized in that: The bottom surface of the battery cover is provided with a charging hole and an indicator light.

5. The hair clippers according to claim 1, characterized in that: A battery circuit board is provided on the inner side wall of the battery box for electrically connecting the battery and the battery cover.

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