Guide pressure spring structure for movable blade of haircut tool bit

Abstract

The utility model belongs to the field of hair scissors, and provides a guide pressure spring structure for a movable blade of a hair cutter head, which comprises a pressure spring and a guide part. Wherein a clamping part and a fixing part for fixing the pressure spring are formed on the pressure spring; the guide piece is made of a wear-resistant material body, the guide piece forms a sinking groove used for being detachably clamped with the clamping part and an arc-shaped abutting surface used for being in sliding connection with the movable blade guide groove, and the central axis of the arc-shaped abutting surface extends in the direction matched with the movable blade guide groove and enables the arc-shaped abutting surface to abut against the opposite bevel edges forming the movable blade guide groove.

Description

Technical Field

[0001] The present application belongs to the field of hair clippers, and more specifically, to a guide compression spring structure of a movable blade of a hair clipper head. Background Art

[0002] In the rapid development of the barber industry, the technological innovation of barber tools has always been the focus of the industry. With the advancement of modern technology, traditional manual barber heads are gradually replaced by electric barber heads, which not only improves the work efficiency of barbers, but also brings customers a more comfortable and convenient barbering experience.

[0003] However, in the process of using the electric barber head, how to maintain the stable fit between the moving blade and the stationary blade is a key technical problem. Traditional electric barber heads usually use a compression spring fixed on the stationary blade as a pressing structure between the moving blade and the stationary blade and directly fit the moving blade tightly on the stationary blade to achieve precise hair cutting. However, this method will cause greater wear and tear between the compression spring and the moving blade and work noise, resulting in the need to replace the barber head after a short period of use, greatly increasing the cost of use. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a guide compression spring structure for a movable blade of a hair clipper head, so as to solve the technical problem of high wear between the compression spring and the movable blade in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is: to provide a guide compression spring structure of a movable blade of a hair cutting head, comprising:

[0006] A compression spring, forming a clamping portion and a fixing portion for fixing the compression spring;

[0007] A guide member, wherein the guide member forms a recessed groove for detachably engaging with the engaging portion and an arcuate abutting surface for slidingly connecting with the movable blade guide groove, wherein the central axis of the arcuate abutting surface extends in a direction adapted to the movable blade guide groove and enables the arcuate abutting surface to abut against a relative oblique edge forming the movable blade guide groove.

[0008] Optionally, the guide member is provided with a planar inner recessed portion which is recessed from the arcuate abutting surface toward the inside of the guide member along the radial direction of the arcuate abutting surface.

[0009] Optionally, the center of the inner recessed portion is opposite to the center of the arcuate abutting surface in the extension direction of the arcuate abutting surface.

[0010] Optionally, a width of the inner recess in the extension direction of the arc-shaped abutting surface is half of the extension length of the arc-shaped abutting surface.

[0011] Optionally, two ends of the inner concave portion along the extending direction of the arc-shaped abutting surface are respectively connected to the arc-shaped abutting surface through connecting inclined surfaces inclined relative to the inner concave portion;

[0012] The connecting inclined surface is inclined relative to the inner recessed portion in a direction away from the inner recessed portion.

[0013] Optionally, an arc transition is provided between the inner recess and / or the arc-shaped abutting surface and the connecting inclined surface.

[0014] Optionally, the guide member forms a flat surface on one side of the bottom of the movable blade guide groove, dividing the arc-shaped abutment surface into two parts;

[0015] The flat surface is spaced apart from the bottom of the movable blade guide groove.

[0016] Optionally, the straight surface extends from an end of the arc-shaped abutting surface to a recessed space formed by the inner recess.

[0017] Optionally, the guide member further forms an arc-shaped end portion;

[0018] The arc-shaped end portion is connected to two ends of the arc-shaped abutting surface along an extending direction of the arc-shaped abutting surface.

[0019] Optionally, the guide member is an integral injection-molded structure of polymer nylon.

[0020] The beneficial effect of the guide compression spring structure of the movable blade of the barber head provided by the present application is that: compared with the prior art, in the guide compression spring structure of the movable blade of the barber head provided by the present application, a guide piece is detachably mounted on the compression spring. On the one hand, since the guide piece is made of a wear-resistant polymer nylon material, it can not only significantly reduce the wear of the compression spring during operation, but also achieve continuous use of the compression spring by only replacing the guide piece, greatly reducing the use cost of the barber head; on the other hand, since the guide piece forms an arc-shaped abutting surface abutting against the oblique side of the movable blade guide groove, it can significantly reduce the friction between the guide piece and the movable blade guide groove, thereby further reducing the wear between the compression spring and the movable blade, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1A schematic diagram of the overall structure of the guide compression spring structure of the movable blade of a barber head provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of an exploded structure of a guide compression spring structure for a movable blade of a barber head provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the front view of the guide compression spring structure of the movable blade of a barber head provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the installation status of the guide compression spring structure of the movable blade of a barber head provided in an embodiment of the present application.

[0026] Among them, the figure marks in the figure are: 101, compression spring; 102, guide member; 111, clamping portion; 112, fixing portion; 121, recessed groove; 122, arc-shaped abutting surface; 123, inner concave portion; 124, connecting inclined surface; 125, arc transition; 126, straight surface; 127, arc-shaped end portion; 200, movable blade guide groove; 201, bevel edge. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Please also read Figures 1 to 4 Now, a guide spring structure for a movable blade of a hair cutting head provided in an embodiment of the present application is described. The guide spring structure for a movable blade of a hair cutting head comprises a spring 101 and a guide member 102. Among them:

[0032] The compression spring 101 forms a clamping portion 111 and a fixing portion 112 for fixing the compression spring 101. In this embodiment, the fixing portion 112 is used to install and fix the compression spring 101 to the stationary blade. The guide member 102 is a polymer nylon integral injection molding structure. The guide member 102 forms a sink 121 for detachably clamping with the clamping portion 111 and an arcuate abutting surface 122 for sliding connection with the movable blade guide groove 200. The central axis of the arcuate abutting surface 122 extends in a direction adapted to the movable blade guide groove 200 and enables the arcuate abutting surface 122 to abut against the relative bevel 201 forming the movable blade guide groove 200.

[0033] According to the above structure provided in this embodiment, in the guide compression spring structure of the movable blade of the barber head provided in this embodiment, a guide member 102 is detachably mounted on the compression spring 101. On the one hand, since the guide member 102 is made of a wear-resistant polymer nylon material, it can not only significantly reduce the wear of the compression spring 101 during operation, but also realize the continuous use of the compression spring 101 by replacing only the guide member 102, which greatly reduces the use cost of the barber head; on the other hand, since the guide member 102 forms an arc-shaped abutting surface 122 abutting against the bevel 201 of the movable blade guide groove 200, it can significantly reduce the friction between the guide member 102 and the movable blade guide groove 200, thereby further reducing the wear between the compression spring 101 and the movable blade, which is far superior to the prior art.

[0034] In another embodiment of the present application, please refer to Figures 1 to 4The guide member 102 is provided with a planar inner concave portion 123 which is recessed from the arcuate abutting surface 122 to the inside of the guide member 102 along the radial direction of the arcuate abutting surface 122. According to the above structure provided in this embodiment, the inner concave portion 123 provided on the guide member 102 can significantly reduce the contact area between the arcuate abutting surface 122 and the bevel 201 forming the movable blade guide groove 200, thereby reducing the friction between the arcuate abutting surface 122 and the movable blade guide groove 200 and reducing the use cost of the barber head. In addition, the inner concave portion 123 in this embodiment can also effectively store lubricant, thereby further reducing the friction between the arcuate abutting surface 122 and the movable blade guide groove 200.

[0035] In another embodiment of the present application, please refer to Figures 1 to 4 , the center of the inner concave portion 123 is directly opposite to the center of the arcuate abutting surface 122 in the extending direction of the arcuate abutting surface 122. According to the above structure provided in this embodiment, since the center of the inner concave portion 123 is aligned with the center of the arcuate abutting surface 122, the arcuate abutting surfaces 122 located on both sides of the inner concave portion 123 and the movable blade guide groove 200 can have the same acting force, which is conducive to making the arcuate abutting surface 122 move more stably relative to the movable blade guide groove 200, thereby further reducing the friction between the arcuate abutting surface 122 and the movable blade guide groove 200.

[0036] In another embodiment of the present application, please refer to Figures 1 to 4 , the width of the inner recess 123 in the extending direction of the arcuate abutting surface 122 is half of the extending length of the arcuate abutting surface 122. According to the above structure provided in this embodiment, the length of the inner recess 123 is set to be the same as the length of the remaining part of the arcuate abutting surface 122 in its extending direction, which is conducive to making the guide member 102 in this embodiment have better structural strength, thereby effectively ensuring that the guide compression spring structure of the movable blade of the hair clipper head in this embodiment can operate stably for a long time.

[0037] In another embodiment of the present application, please refer to Figures 1 to 4 The two ends of the inner recess 123 along the extending direction of the arcuate abutting surface 122 are respectively connected to the arcuate abutting surface 122 through connecting inclined surfaces 124 inclined relative to the inner recess 123, and the connecting inclined surfaces 124 are inclined relative to the inner recess 123 in the direction away from the inner recess 123. According to the above structure provided in this embodiment, since the inner recess 123 is connected to the arcuate abutting surface 122 through the connecting inclined surfaces 124, it is beneficial for the lubricant contained in the cavity formed by the inner recess 123 to flow more smoothly to between the arcuate abutting surface 122 and the bevel 201 forming the movable blade guide groove 200 through the connecting inclined surfaces 124, thereby further reducing the friction between the arcuate abutting surface 122 and the movable blade guide groove 200.

[0038] In another embodiment of the present application, please refer to Figures 1 to 4 , an arc transition 125 is provided between the inner recess 123 and / or the arc-shaped abutting surface 122 and the connecting inclined surface 124. According to the above structure provided in this embodiment, the arc transition 125 formed between the inner recess 123 and the connecting inclined surface 124 and the arc transition 125 formed between the arc-shaped abutting surface 122 and the connecting inclined surface 124 are both conducive to making the lubricant flow more smoothly from the cavity formed by the inner recess 123 to between the arc-shaped abutting surface 122 and the bevel 201 forming the movable blade guide groove 200, which is conducive to further reducing the friction between the arc-shaped abutting surface 122 and the movable blade guide groove 200.

[0039] In another embodiment of the present application, please refer to Figures 1 to 4 The guide member 102 forms a flat surface 126 on one side of the bottom of the movable blade guide groove 200, which divides the arc-shaped abutting surface 122 into two parts. The flat surface 126 is spaced apart from the bottom of the movable blade guide groove 200. According to the above structure provided in this embodiment, the flat surface 126 provided on the guide member 102 is conducive to reducing the contact area between the guide member 102 and the movable blade guide groove 200 on the one hand, and is also conducive to making the lubricant flow more smoothly between the arc-shaped abutting surface 122 and the movable blade guide groove 200, thereby significantly reducing the friction between the arc-shaped abutting surface 122 and the movable blade guide groove 200.

[0040] In another embodiment of the present application, please refer to Figures 1 to 4 , the straight surface 126 extends from the end of the arc-shaped abutting surface 122 to the concave space formed by the inner concave portion 123. According to the above structure provided in this embodiment, the straight surface 126 extends from the end of the arc-shaped abutting surface 122 to the concave space formed by the inner concave portion 123, which is conducive to more fully infiltrating the lubricant between the arc-shaped abutting surface 122 and the movable blade guide groove 200, and is conducive to further reducing the friction between the arc-shaped abutting surface 122 and the movable blade guide groove 200.

[0041] In another embodiment of the present application, please refer to Figures 1 to 4 The guide member 102 also forms an arcuate end portion 127, which is connected to both ends of the arcuate abutting surface 122 along the extending direction of the arcuate abutting surface 122. According to the above structure provided in this embodiment, the arcuate end portion 127 formed on the guide member 102 is conducive to preventing the lubricant from being pushed out of the guide groove as much as possible during the sliding process of the guide member 102 relative to the movable blade guide groove 200, which is conducive to further reducing the friction between the arcuate abutting surface 122 and the movable blade guide groove 200, so that the movable blade is smooth during use, which is conducive to preventing the phenomenon of sticking.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A guide spring structure for a movable blade of a hair cutting head, characterized in that: include: A compression spring (101) forming a clamping portion (111) and a fixing portion (112) for fixing the compression spring (101); A guide member (102), the guide member (102) forming a recessed groove (121) for detachably engaging with the engaging portion (111) and an arcuate abutting surface (122) for slidably connecting with the movable blade guide groove (200), the central axis of the arcuate abutting surface (122) extending in a direction adapted to the movable blade guide groove (200) and enabling the arcuate abutting surface (122) to abut against a relative oblique edge (201) forming the movable blade guide groove (200).

2. The guide compression spring structure of the movable blade of a hair cutting head according to claim 1, characterized in that: The guide member (102) is provided with a planar inner concave portion (123) which is recessed from the arc-shaped abutment surface (122) toward the inside of the guide member (102) along the radial direction of the arc-shaped abutment surface (122).

3. The guide compression spring structure of the movable blade of a hair cutting head according to claim 2, characterized in that: The center of the inner recess (123) is directly opposite to the center of the arc-shaped abutment surface (122) in the extension direction of the arc-shaped abutment surface (122).

4. The guide compression spring structure of the movable blade of a hair cutting head according to claim 3, characterized in that: The width of the inner recess (123) in the extension direction of the arc-shaped abutment surface (122) is half of the extension length of the arc-shaped abutment surface (122).

5. The guide compression spring structure of the movable blade of a hair cutting head according to claim 2, characterized in that: Both ends of the inner recess (123) along the extension direction of the arc-shaped abutting surface (122) are connected to the arc-shaped abutting surface (122) via connecting inclined surfaces (124) inclined relative to the inner recess (123); The connecting inclined surface (124) is inclined relative to the inner recess (123) in a direction away from the inner recess (123).

6. The guide compression spring structure of the movable blade of a hair cutting head according to claim 5, characterized in that: An arc transition (125) is provided between the inner recess (123) and / or the arc-shaped abutment surface (122) and the connecting inclined surface (124).

7. The guide compression spring structure of the movable blade of a hair cutting head according to claim 2, characterized in that: The guide member (102) forms a flat surface (126) on one side facing the bottom of the movable blade guide groove (200) and dividing the arc-shaped abutting surface (122) into two parts; The flat surface (126) is spaced apart from the bottom of the movable blade guide groove (200).

8. The guide compression spring structure of the movable blade of a hair cutting head according to claim 7, characterized in that: The straight surface (126) extends from the end of the arc-shaped abutting surface (122) to the recessed space formed by the inner recess (123).

9. The guide compression spring structure of the movable blade of a hair cutting head according to claim 7, characterized in that: The guide member (102) further forms an arc-shaped end portion (127); The arc-shaped end portion (127) is connected to two ends of the arc-shaped abutment surface (122) along the extension direction of the arc-shaped abutment surface (122).

10. The guide compression spring structure of the movable blade of a hair clipper head according to any one of claims 1 to 7, characterized in that: The guide member (102) is an integral injection-molded structure of polymer nylon.

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