Nail grinding device capable of being stored

Abstract

The utility model discloses a nail grinding device capable of being stored. The nail grinding device comprises a main body, a driving unit arranged in the main body, a grinding head connected with the rotating end of the driving unit and a rear cover arranged on the back of the main body in a clamped mode. A plurality of standby grinding heads used for replacing the grinding heads are inserted into the back of the main body, each grinding head comprises a grinding block and a connecting shaft formed at the bottom of the grinding block, an inserting groove allowing the connecting shaft to be placed in and a positioning groove used for bearing and limiting the grinding block are formed in the back of the main body, and the positioning groove is attached to the outer contour of the grinding block.

Description

Technical Field

[0001] The utility model relates to the technical field of nail grinders, in particular to a retractable nail grinder. Background Art

[0002] Electric nail grinders on the market, such as round nail grinders, include a shell, a motor, a circuit board, a grinding head, a battery, and an on / off switch. The shell is provided with an assembly space for the motor, the power supply part, and the circuit board. The upper part of the shell is provided with an opening device for assembling the motor, and the lower part is provided with an assembly space for the circuit board and an installation cavity for a single battery. Existing traditional nail grinders are generally equipped with multiple replacement grinding heads, but they are all placed in a storage box, which makes them inconvenient to carry and affects the user experience. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a retractable nail grinder.

[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0005] A retractable nail grinder comprises a main body, a driving unit disposed in the main body, a grinding head connected to a rotating end of the driving unit, and a back cover clamped on the back of the main body;

[0006] Several spare grinding heads for replacing the grinding heads are inserted on the back of the main body. The grinding head includes a grinding block and a connecting shaft formed at the bottom of the grinding block. The back of the main body is formed with a slot for inserting the connecting shaft and a positioning groove for supporting and limiting the grinding block, and the positioning groove fits the outer contour of the grinding block.

[0007] Preferably, the back of the main body is provided with a connected sliding area and a fixed area, and the back cover is formed with a snap-on unit that is placed in the fixed area; the snap-on unit is constrained within the fixed area and maintains a fixed fit with the main body; the snap-on unit slides to the sliding area under external force, allowing the back cover to move relative to the main body to expose the spare grinding head. With the above improvements, during the installation of the back cover, the snap-on unit can be inserted into the sliding area, and then the back cover can be slid to snap into the fixed area, thereby improving the convenience of removing and installing the back cover, ensuring the user's convenience when replacing the spare grinding head, and significantly improving the user experience.

[0008] Preferably, a sliding slot is formed on the main body, the sliding area and the fixed area are formed in the sliding slot, and an elastic blocking block is provided between the sliding area and the fixed area. When the snap-in unit is placed in the fixed area, the blocking block abuts against the snap-in unit to prevent the snap-in unit from being separated from the fixed area. With the above improvement, during the installation process of the back cover, the snap-in unit will first enter the sliding area. As the snap-in unit slides, the snap-in unit will push off the blocking block and enter the fixed area. After entering the fixed area, the snap-in unit is snapped with the main body, and the blocking block abuts against the snap-in unit to prevent the snap-in unit from being separated from the fixed area, thereby ensuring the reliability of the snap-in unit.

[0009] Preferably, the width of the fixed area is smaller than the width of the sliding area, and when the snap-in unit is placed in the fixed area, the fixed area abuts against both sides of the snap-in unit. With the above improvement, during the installation of the back cover, since the width of the fixed area is smaller than the width of the sliding area, the fixed area abuts against both sides of the snap-in unit, securing the snap-in unit in the sliding slot.

[0010] Preferably, an abutting protrusion is formed in the fixing area, and when the clamping unit is placed in the fixing area, the abutting protrusion abuts against the side wall of the clamping unit. With the above improvement, when the clamping unit is placed in the fixing area, the abutting protrusion will squeeze the clamping unit, so that the clamping unit is fixed in the fixing area, thereby ensuring the reliability of the back cover fixation.

[0011] Preferably, a guide post is extended from the blocking block away from the insertion direction of the clamping unit, and a guide arc surface is formed on the guide post. Through the above improvement, the guide arc surface is provided on the guide post, thereby improving the smoothness of the rear cover during the removal and installation sliding process.

[0012] Preferably, a battery installation cavity is formed on the back of the main body for placing the battery, and a battery fixing protrusion is formed on the back cover, and the battery fixing protrusion is arranged opposite to the battery installation cavity. Through the above improvement, when the back cover is installed, the battery fixing protrusion will abut the battery, ensuring the stability of the battery installation.

[0013] Preferably, the main body includes an upper shell and a lower shell, a certain installation space is defined between the upper shell and the lower shell, the lower shell is snap-fitted to the back cover, and a snap-fitting protrusion is formed on the lower shell, and a snap-fitting block is formed on the upper shell, and a fixed snap-fitting groove for the snap-fitting protrusion to be placed in the snap-fitting block is formed on the snap-fitting block. Through the above improvement, the connection between the upper shell and the lower shell is achieved by utilizing the snap-fitting block to cooperate with the snap-fitting protrusion.

[0014] Preferably, a fixing plate for fixing the drive unit is formed on the lower shell, and the fixing plate is attached to both sides of the drive unit. Through the above improvement, the stability of the drive unit is improved, and the vibration of the grinding head during use is avoided.

[0015] Preferably, the back of the lower shell forms a battery installation cavity, the back of the battery installation cavity forms a fixed groove, a drive switch is provided in the fixed groove, and a start-up pressing block is slidably provided on the upper shell, the start-up pressing block abuts against the drive switch, and a sliding foot is formed on the outer periphery of the start-up pressing block, a guide hole is formed on the sliding foot, and a sliding column is formed on the upper shell, and the sliding column is inserted into the guide hole. Through the above improvements, the start-up pressing block can be pressed during use to cause the start-up pressing block to descend and trigger the drive switch, thereby controlling the drive unit to work, and the guide hole cooperates with the sliding column to ensure the stability of the start-up pressing block during the up and down sliding process.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] Several spare grinding heads for replacing the grinding heads are inserted into the back of the main body, wherein the grinding head includes a grinding block and a connecting shaft formed at the bottom of the grinding block. The inside of the main body is provided with a slot for inserting the connecting shaft, and a positioning groove for supporting and limiting the grinding block. The positioning groove fits the outer contour of the grinding block, thereby greatly increasing the stability of the placement of the spare grinding head. There is no need to put the spare grinding head in a storage box, and it can be carried directly with the main body, which greatly improves the convenience of the user during use to ensure the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the front of the overall structure of the utility model;

[0019] Figure 2 It is a structural diagram of the back of the overall structure of the utility model;

[0020] Figure 3 It is an exploded view of the overall structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the spare grinding head and the main body of the utility model;

[0022] Figure 5 This is a schematic structural diagram of the back of the lower shell of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the back cover of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the upper shell and the start-up pressing block of the utility model;

[0025] Figure 8 This is a structural diagram of the front side of the lower shell of the present invention;

[0026] In the figure: 1. Main body; 2. Driving unit; 3. Grinding head; 4. Back cover; 5. Spare grinding head; 1.1. Grinding block; 1.2. Connecting shaft; 1.3. Slot; 1.4. Positioning slot; 1.5. Clamping unit; 1.6. Sliding slot; 2.1. Sliding area; 2.2. Fixed area; 2.3. Stop block; 2.4. Abutting protrusion; 2.5. Guide column; 2.6. Guide arc surface; 4.1. Battery installation cavity; 4.2. Battery fixing protrusion; 5.1. Upper shell; 5.2. Lower shell; 5.3. Installation space; 5.4. Clamping protrusion; 5.5. Clamping block; 5.6. Fixed slot; 5.7. Fixed sheet; 6.1. Fixed slot; 6.2. Driving switch; 6.3. Start pressing block; 6.4. Sliding foot; 6.5. Guide hole; 6.6. Sliding column; DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be understood that although terms such as upper, middle, lower, top, end, etc. appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for ease of understanding, and are not used to define any direction or order limitation.

[0029] like Figure 1-8 As shown, a retractable nail grinder includes a main body 1, a driving unit 2 arranged in the main body 1, a grinding head 3 connected to the rotating end of the driving unit 2, and a back cover 4 clamped on the back of the main body 1.

[0030] Specifically, a number of spare grinding heads 5 for replacing the grinding head 3 are inserted on the back of the main body 1. The grinding head 3 includes a grinding block 1.1 and a connecting shaft 1.2 formed at the bottom of the grinding block 1.1. The back of the main body 1 is provided with a slot 1.3 for inserting the connecting shaft 1.2, and a positioning groove 1.4 for supporting and limiting the grinding block 1.1, and the positioning groove 1.4 fits the outer contour of the grinding block 1.1.

[0031] By arranging a slot 1.3 and a positioning slot 1.4 inside the main body 1, the connecting shaft 1.2 of the spare grinding head 5 can be inserted into the slot 1.3, and the grinding block 1.1 can be placed in the positioning slot 1.4, thereby ensuring the stability of the placement of the spare grinding head 5. There is no need to place the spare grinding head 5 in a storage box, and it can be carried directly with the main body 1, which greatly improves the convenience of the user during use to ensure the user's experience.

[0032] Preferably, the slot 1.3 and the connecting shaft 1.2 are interference fit, thereby ensuring the stability of the insertion of the spare grinding head 5.

[0033] As for further explanation of the snap-fitting between the rear cover 4 and the main body 1, a sliding area 2.1 and a fixed area 2.2 are provided on the back of the main body 1, and a snap-fitting unit 1.5 is formed on the rear cover 4 and is placed in the fixed area 2.2. The snap-fitting unit 1.5 is constrained in the fixed area 2.2 and maintains a fixed fit with the main body 1. The snap-fitting unit 1.5 slides to the sliding area 2.1 under the action of an external force to allow the rear cover 4 to move relative to the main body 1 to expose the spare grinding head 5.

[0034] During the installation of the back cover 4, the snap-on units 1.5 can be inserted into the sliding area 2.1 respectively, and then the back cover 4 can be slid to snap onto the fixed area 2.2, thereby improving the convenience of disassembly and installation of the back cover 4, ensuring the convenience of the user when replacing the spare grinding head 5, and greatly improving the user experience.

[0035] Specifically, a sliding slot 1.6 is formed on the main body 1, and the sliding area 2.1 and the fixed area 2.2 are formed in the sliding slot 1.6. An elastic blocking block 2.3 is provided between the sliding area 2.1 and the fixed area 2.2. When the snap-fit ​​unit 1.5 is placed in the fixed area 2.2, the blocking block 2.3 abuts against the snap-fit ​​unit 1.5 to prevent the snap-fit ​​unit 1.5 from separating from the fixed area 2.2.

[0036] During the installation process of the back cover 4, the snap-in unit 1.5 will first enter the sliding area 2.1. As the snap-in unit 1.5 slides in the sliding area 2.1, the snap-in unit 1.5 will push open the blocking block 2.3 and enter the fixed area 2.2. After entering the fixed area 2.2, the snap-in unit 1.5 is snapped into the fixed area 2.2. At the same time, the blocking block 2.3 abuts against the snap-in unit 1.5 to limit the snap-in unit 1.5 from being separated from the fixed area 2.2, thereby ensuring the reliability of the snap-in unit 1.5.

[0037] Furthermore, an abutting protrusion 2.4 is formed in the fixing area 2.2. When the clamping unit 1.5 is placed in the fixing area 2.2, the abutting protrusion 2.4 abuts against the side wall of the clamping unit 1.5 to ensure the reliability of the fixation of the back cover 4.

[0038] Among them, the width of the fixed area 2.2 is smaller than the width of the sliding area 2.1. During the installation process of the back cover 4, since the width of the fixed area 2.2 is smaller than the width of the sliding area 2.1, the fixed area 2.2 abuts against both sides of the card unit 1.5, so that the card unit 1.5 is fixed in the sliding card slot 1.6.

[0039] Preferably, a guide column 2.5 extends from the blocking block 2.3 in the direction of insertion of the snap-on unit 1.5, and a guide arc surface 2.6 is formed on the guide column 2.5. The guide arc surface 2.6 is provided on the guide column 2.5, thereby improving the smoothness of the sliding of the back cover 4 during the disassembly and installation process.

[0040] Preferably, a battery installation cavity 4.1 for placing the battery is formed on the back of the main body 1, and a battery fixing protrusion 4.2 is formed on the back cover 4. The battery fixing protrusion 4.2 is arranged opposite to the battery installation cavity 4.1. When the back cover 4 is installed, the battery fixing protrusion 4.2 will abut the battery, ensuring the stability of the battery installation.

[0041] As a further explanation of the structure of the main body 1, the main body 1 includes an upper shell 5.1 and a lower shell 5.2, and a certain installation space 5.3 is formed between the upper shell 5.1 and the lower shell 5.2. The lower shell 5.2 is snap-fitted to the back cover 4, and a snap-fit ​​protrusion 5.4 is formed on the lower shell 5.2. A snap-fit ​​block 5.5 is formed on the upper shell 5.1, and a fixed snap-fit ​​groove 5.6 is formed on the snap-fit ​​block 5.5 for the snap-fit ​​protrusion 5.4 to be placed. The snap-fit ​​block 5.5 cooperates with the snap-fit ​​protrusion 5.4 to achieve the connection between the upper shell 5.1 and the lower shell 5.2.

[0042] In addition, a plurality of guide connection columns are formed on the upper shell 5.1, and a fixed connection groove for the guide connection columns to be placed is formed on the lower shell 5.2, thereby ensuring the accuracy of the connection and fit between the upper shell 5.1 and the lower shell 5.2.

[0043] Specifically, a fixing piece 5.7 for fixing the driving unit 2 is formed on the lower shell 5.2, and the fixing piece 5.7 fits on both sides of the driving unit 2, thereby improving the stability of the fixing of the driving unit 2 and preventing the grinding head from vibrating during use.

[0044] Furthermore, the back of the lower shell 5.2 forms a battery installation cavity 4.1, and the back of the battery installation cavity 4.1 forms a fixing groove 6.1, and the fixing groove 6.1 is provided with a driving switch 6.2, and a starting pressing block 6.3 is slidingly provided on the upper shell 5.1, and the starting pressing block 6.3 abuts against the driving switch 6.2. During use, the starting pressing block 6.3 can be pressed to make the starting pressing block 6.3 descend and trigger the driving switch 6.2, thereby controlling the driving unit 2 to work.

[0045] Preferably, a sliding foot 6.4 is formed on the outer periphery of the starting pressing block 6.3, a guide hole 6.5 is formed on the sliding foot 6.4, and a sliding column 6.6 is formed on the upper shell 5.1. The sliding column 6.6 is inserted into the guide hole 6.5. The guide hole 6.5 cooperates with the sliding column 6.6 to ensure the stability of the starting pressing block 6.3 during the up and down sliding process.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A retractable nail grinder, characterized in that: It comprises a main body (1), a driving unit (2) arranged in the main body (1), a grinding head (3) connected to the rotating end of the driving unit (2), and a back cover (4) clamped on the back of the main body (1); A plurality of spare grinding heads (5) for replacing the grinding heads (3) are inserted on the back of the main body (1); the grinding head (3) comprises a grinding block (1.1) and a connecting shaft (1.2) formed at the bottom of the grinding block (1.1); the back of the main body (1) comprises a slot (1.3) for the connecting shaft (1.2) to be inserted, and a positioning groove (1.4) for supporting and limiting the grinding block (1.1); and the positioning groove (1.4) is in contact with the outer contour of the grinding block (1.1).

2. The retractable nail grinder according to claim 1, characterized in that: The back of the main body (1) is provided with a sliding area (2.1) and a fixed area (2.2) that are connected to each other, and the back cover (4) is formed with a snap-on unit (1.5) that is placed in the fixed area (2.2); The snap-fit ​​unit (1.5) is constrained within the fixed area (2.2) and maintains a fixed fit with the main body (1); The clamping unit (1.5) slides to the sliding area (2.1) under the action of an external force, thereby allowing the rear cover (4) to move relative to the main body (1) to expose the spare grinding head (5).

3. The retractable nail grinder according to claim 2, characterized in that: A sliding slot (1.6) is formed on the main body (1); the sliding area (2.1) and the fixed area (2.2) are formed in the sliding slot (1.6); an elastic blocking block (2.3) is provided between the sliding area (2.1) and the fixed area (2.2); when the snap-fit ​​unit (1.5) is placed in the fixed area (2.2), the blocking block (2.3) abuts against the snap-fit ​​unit (1.5) to limit the snap-fit ​​unit (1.5) from separating from the fixed area (2.2).

4. The retractable nail grinder according to claim 2, characterized in that: The width of the fixed area (2.2) is smaller than the width of the sliding area (2.1); when the clamping unit (1.5) is placed in the fixed area (2.2), the fixed area (2.2) abuts against both sides of the clamping unit (1.5).

5. The retractable nail grinder according to claim 2, characterized in that: An abutting protrusion (2.4) is formed in the fixing area (2.2); when the clamping unit (1.5) is placed in the fixing area (2.2), the abutting protrusion (2.4) abuts against a side wall of the clamping unit (1.5).

6. The retractable nail grinder according to claim 3, characterized in that: A guide column (2.5) extends from the blocking block (2.3) away from the insertion direction of the clamping unit (1.5), and a guide arc surface (2.6) is formed on the guide column (2.5).

7. The retractable nail grinder according to claim 1, characterized in that: A battery installation cavity (4.1) for placing a battery is formed on the back of the main body (1), and a battery fixing convex portion (4.2) is formed on the back cover (4), wherein the battery fixing convex portion (4.2) is arranged opposite to the battery installation cavity (4.1).

8. The retractable nail grinder according to claim 1, characterized in that: The main body (1) comprises an upper shell (5.1) and a lower shell (5.2); a certain installation space (5.3) is formed between the upper shell (5.1) and the lower shell (5.2); the lower shell (5.2) is snap-connected with the back cover (4); a snap-connecting protrusion (5.4) is formed on the lower shell (5.2); a snap-connecting block (5.5) is formed on the upper shell (5.1); and a fixed snap-connecting groove (5.6) is formed on the snap-connecting block (5.5) for the snap-connecting protrusion (5.4) to be placed.

9. The retractable nail grinder according to claim 8, characterized in that: A fixing plate (5.7) for fixing the drive unit (2) is formed on the lower shell (5.2), and the fixing plate (5.7) is attached to both sides of the drive unit (2).

10. The retractable nail grinder according to claim 9, characterized in that: The back of the lower shell (5.2) forms a battery installation cavity (4.1), the back of the battery installation cavity (4.1) forms a fixing groove (6.1), a driving switch (6.2) is arranged in the fixing groove (6.1), and a starting pressing block (6.3) is slidably arranged on the upper shell (5.1), the starting pressing block (6.3) abuts against the driving switch (6.2), and a sliding support leg (6.4) is formed on the outer periphery of the starting pressing block (6.3), a guide hole (6.5) is formed on the sliding support leg (6.4), and a sliding column (6.6) is formed on the upper shell (5.1), and the sliding column (6.6) is inserted into the guide hole (6.5).

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