Pressing type tool bit and hair clipper

Abstract

The utility model relates to a pressing type tool bit which comprises a shell, a buckling piece, a blade assembly and a key. Wherein a containing cavity is defined by the shell, the shell is provided with an opening, and the shell is further provided with a through hole; the buckling piece is connected to the shell; the blade assembly is located on the opposite side of the through hole and comprises a pressing face and a shell clamping part, and the shell clamping part is connected with the buckling piece in a buckled mode so that the blade assembly can cover the opening of the shell. One end of the key is elastically connected to the shell, the other end of the key penetrates through the through hole to be located in the containing cavity, and the key can abut against the pressing face in the pressing state, so that the clamping part of the shell is separated from the buckling piece. According to the pressing type tool bit, the blade set is connected with the buckling piece through the buckle, and when the blade needs to be replaced, only the key needs to be pressed down, so that the blade assembly is separated from the machine body, the buckling connection between the buckling piece and the clamping part of the shell is disconnected, the blade set falls off from the shell, and the blade is disassembled.

Description

Technical Field

[0001] This utility model relates to the field of electric hair clipper technology, specifically to a press-type blade and a hair clipper. Background Technology

[0002] With the rapid development of the hair styling market, sales of hair clippers have increased significantly, and users are increasingly demanding easy-to-use clippers. Currently, changing the blade usually requires removing the clipper head and then replacing the blade, which is inconvenient and easily gets hands dirty. Especially in the medical field, some patients require hair removal, and these patients may have infectious diseases. To prevent the spread of infection between patients, hair clipper blades need to be changed for each person. Therefore, there is a need for a hair clipper with easily replaceable blades. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a press-type blade head for quick blade removal, which is simple to operate and convenient to use.

[0004] Part One:

[0005] A press-type blade head includes a housing, a fastener, a blade assembly, and a button. The housing encloses a receiving cavity with an opening and a through hole. The fastener is connected to the housing. The blade assembly is located opposite the through hole and includes a pressing surface and a housing locking portion. The housing locking portion is snapped into place with the fastener, causing the blade assembly to cover the opening of the housing. One end of the button is elastically connected to the housing, and the other end passes through the through hole and is located in the receiving cavity. When the button is pressed, it abuts against the pressing surface, causing the housing locking portion to disengage from the fastener.

[0006] This utility model describes a press-type blade head that connects the blade assembly to the fastener via a snap-fit ​​mechanism. When the blade needs to be replaced, simply press the button; pressure is transmitted from the button to the pressing surface, disengaging the snap-fit ​​connection between the fastener and the housing. The blade assembly then detaches from the housing, completing the blade removal process. Next, the new blade assembly is pressed against the housing at the opening, at which point the housing's snap-fit ​​connection with the fastener is established, completing one blade replacement. Furthermore, blade replacement eliminates the need for hand contact with the blade, preventing hand contamination and reducing the risk of infection for healthcare workers.

[0007] As a preferred embodiment, the fastener is located within the receiving cavity of the housing. The fastener's placement within the housing cavity prevents accidental contact that could cause the blade assembly to separate from the housing.

[0008] As a preferred embodiment, there are two fasteners and two housing locking parts for the blade assembly, located on both sides of the pressing surface in the horizontal direction. Each fastener corresponds to one housing locking part. Having two fasteners and two housing locking parts, distributed on both sides of the pressing surface in the horizontal direction, facilitates force balance when the blade assembly and housing are in contact.

[0009] As a preferred embodiment, the fastening element is an elastic element, one end of which is hook-shaped or bow-shaped, deforming when fastened to the outer casing. The bow-shaped end of the elastic element facilitates a better fastening connection with the outer casing, and the hook or bow shape allows for greater deformation during fastening, maintaining good fastening performance even after repeated installation and removal of the blade assembly.

[0010] As a preferred embodiment, the button includes a button cover, a button shaft, and a spring. The button cover passes through the through hole, one end of the button shaft is fixed to the button cover, and the other end is located on the opposite side of the pressing surface. The spring is fitted onto the button shaft and is located between the button cover and the outer shell. This elastic connection method of button cover, spring, and button shaft provides a certain amount of resistance when pressed, preventing accidental activation.

[0011] As a preferred embodiment, the housing further includes a blocking portion, which is disposed around the through hole and located on the outer periphery of the button cover. The button cover has a barb; when the button is pressed, the barb separates from the blocking portion; when the button is reset, the barb engages with the blocking portion. The barb and the blocking portion prevent the button cover from jumping out of the through hole when reset.

[0012] Part Two:

[0013] A hair clipper includes a body and a press-type blade as described in the first part, the housing being connected to the body.

[0014] As a preferred embodiment, the blade assembly further includes a movable blade, and the body includes a drive shaft for driving the movable blade to reciprocate. By driving the movable blade through the drive shaft, the movable blade reciprocates on the blade assembly, thereby cutting the hair.

[0015] As a preferred embodiment, the blade assembly further includes a body connecting portion, which is fixed to the moving blade. The body connecting portion has a through groove, the through direction of which is perpendicular to the reciprocating motion direction of the moving blade, and the drive shaft is engaged within the through groove. The drive shaft and the blade assembly are detachably connected via the through groove. When the button is pressed, the through groove allows the drive shaft to naturally disengage from the body connecting portion.

[0016] As a preferred embodiment, the pressing surface is located on the body connecting part. Having the pressing surface on the body connecting part allows for a more direct disengagement of the body connecting part from the drive shaft during pressing, i.e., disengagement of the blade assembly from the body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hair clipper;

[0018] Figure 2 This is a schematic diagram of the structure of a press-type cutter head after part of its outer shell has been removed;

[0019] Figure 3 This is a schematic diagram of the structure of a press-type cutter head after the outer shell has been removed;

[0020] Among them, 1-outer shell, 2-fastener, 3-blade assembly, 4-button, 5-body, 11-through hole, 12-blocking part, 31-body connecting part, 311-pressing surface, 312-through groove, 32-outer shell snap-fit ​​part, 33-fixed blade, 34-moving blade, 41-button cover, 411-barb, 42-button shaft, 43-spring, 51-drive shaft. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0025] like Figure 1-3As shown, the hair clipper of this utility model includes a press-type blade head and a body 5, with the press-type blade head connected to the body 5. The press-type blade head includes a housing 1, a fastener 2, a blade assembly 3, and a button 4.

[0026] The outer casing 1 encloses a receiving cavity and has an opening, and a through hole 11 is formed on the outer casing 1. The body 5 includes a drive shaft 51, which extends out of the body 5 and one end is located in the receiving cavity. The outer casing 1 and the body 5 can be integrally formed or they can be separate parts fixed to each other.

[0027] There are two fasteners 2. In this embodiment, the fasteners 2 are elastic elements, located in the receiving cavity of the outer shell 1, and symmetrically arranged on both sides of the transmission shaft 51. One end of the fastener 2 is detachably connected to the outer shell 1 by screws, and the other end of the fastener 2 can be hook-shaped or bow-shaped. In this embodiment, it is bow-shaped.

[0028] The blade assembly 3 is located on the opposite side of the through hole 11 and covers the opening of the outer casing 1. The blade assembly 3 includes a body connecting part 31, an outer casing locking part 32, a fixed blade 33, and a moving blade 34. The body connecting part 31 is connected to the moving blade 34, and the moving blade 34 can reciprocate along the surface of the fixed blade 33. The body connecting part 31 is also provided with a pressing surface 311 and a through groove 312. The drive shaft 51 is inserted into the through groove 312, and the through direction of the through groove 312 is perpendicular to the reciprocating direction of the moving blade 34. Specifically, the drive shaft 51 is an eccentric shaft, which drives the body connecting part 31 to reciprocate when it rotates, thereby causing the moving blade 34 to reciprocate. There are two outer casing locking parts 32, which are symmetrically arranged on both sides of the body connecting part 31 and correspond to the positions of the two fasteners 2. When the blade assembly 3 is installed and fixed to the outer casing 1, the fasteners 2 deform, and the outer casing locking part 32 is locked to the fasteners 2.

[0029] The button 4 includes a button cover 41, a button shaft 42, and a spring 43. The button cover 41 passes through the through hole 11. One end of the button shaft 42 is fixed to the inside of the button cover 41, and the other end faces the pressing surface 311 with a certain spatial distance. The spring 43 is fitted onto the button shaft 42, with one end connected to the inside of the button cover 41 and the other end connected to the outer casing 1. This elastic connection of the button cover, spring, and button shaft provides some resistance when pressed, preventing accidental activation. In a preferred embodiment, the outer casing 1 also includes a blocking part 12, which surrounds the through hole 11 and is located on the outer periphery of the button cover 41. The button cover 41 has a barb 411. When the button 4 is pressed, the barb 411 separates from the blocking part 12. When the button 4 is in the reset state, the barb 411 engages with the blocking part 12. The barb 411 and the blocking part 12 prevent the button cover 41 from jumping out of the through hole when reset.

[0030] When the blade assembly 3 needs to be replaced, press button 4. The button cover 41 falls down, pressing down the button shaft 42. The other end of the button shaft 42 reaches the pressing surface 311, transmitting pressure to the pressing surface 311. At this time, the blade assembly 3 tends to move outward under force, causing the elastic element 2 to deform. The snap connection between the outer shell locking part 32 and the elastic element 2 is disconnected. At the same time, the connection between the drive shaft 51 and the machine body connecting part 31 at the through groove 312 is disengaged, and the blade assembly 3 can be detached from the outer shell 1, thus completing the blade removal. Then, press the new blade assembly 3 against the opening of the outer shell 1. At this time, the outer shell locking part 32 of the blade assembly 3 is snapped into place with the elastic element 2, and the machine body connecting part 31 is connected to the drive shaft 51 at the through groove 312, completing one blade replacement.

[0031] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A press-type cutter head, characterized in that, The device includes a housing, a fastener, a blade assembly, and a button. The housing encloses a receiving cavity with an opening and a through hole. The fastener is connected to the housing. The blade assembly is located opposite the through hole and includes a pressing surface and a housing locking portion. The housing locking portion is snapped into place with the fastener, causing the blade assembly to cover the opening of the housing. One end of the button is elastically connected to the housing, and the other end passes through the through hole and is located in the receiving cavity. When the button is pressed, it abuts against the pressing surface, causing the housing locking portion to disengage from the fastener.

2. The press-type cutter head according to claim 1, characterized in that, The fastener is located within the receiving cavity of the housing.

3. A press-type cutter head according to claim 2, characterized in that, There are two fasteners, and the blade assembly has two housing snap-fit ​​parts, located on both sides of the pressing surface in the horizontal direction. The fasteners and housing snap-fit ​​parts correspond one-to-one.

4. A press-type cutter head according to claim 3, characterized in that, The fastener is an elastic element, which is hook-shaped or bow-shaped and deforms when it is fastened to the outer shell.

5. A press-type cutter head according to claim 1, characterized in that, The button includes a button cover, a button shaft, and a spring. The button cover passes through the through hole. One end of the button shaft is fixed to the button cover, and the other end is located on the opposite side of the pressing surface. The spring is fitted onto the button shaft and is located between the button cover and the outer shell.

6. A press-type cutter head according to claim 5, characterized in that, The housing also includes a blocking part, which is arranged around the through hole and located on the outer periphery of the button cover. The button cover is provided with a barb. When the button is pressed, the barb is separated from the blocking part. When the button is reset, the barb is engaged with the blocking part.

7. A hair clipper, characterized in that, It includes a body and a press-type blade as described in any one of claims 1 to 6, wherein the outer shell is connected to the body.

8. A hair clipper according to claim 7, characterized in that, The blade assembly also includes a moving blade, and the machine body includes a drive shaft for driving the moving blade to reciprocate.

9. A hair clipper according to claim 8, characterized in that, The blade assembly also includes a body connection part, which is fixed to the moving blade. The body connection part is provided with a through groove, the through direction of which is perpendicular to the reciprocating motion direction of the moving blade, and the drive shaft is engaged in the through groove.

10. A hair clipper according to claim 9, characterized in that, The pressing surface is located on the body connection part.

Images