Installation components

Abstract

According to one aspect, a mounting assembly (20) for a hair cutting instrument (10) is provided, the mounting assembly comprising: a head (22) configured to receive a cutting unit, and including: a body (24) extending along an elongation axis (50); a drive axle (26) configured to be coupled to the cutting unit and reciprocating relative to the body along the elongation axis to reciprocate the cutting unit relative to the body; a primary head support surface (44); and a separate secondary head support surface (52); a mating member (40) pivotally coupled to the head, the mating member including: a primary mating member support surface (46) configured to engage with the primary head support surface to allow sliding rotation of the mating member relative to the head about a first rotation axis (60), and configured to... The contact line contacts the primary head support surface to restrict movement of the head toward the mating member along a second axis perpendicular to the first axis of rotation, which is parallel to the elongation axis; and a secondary mating member support surface (54) separate from the primary mating member support surface and configured to engage with the secondary head support surface to allow sliding rotation of the mating member relative to the head about the first axis of rotation, and configured to support against the secondary head support surface to restrict movement of the head relative to the mating member along a third axis (70) perpendicular to the second axis and the first axis of rotation; and a drive unit (34) including a drive wheel axle (36) and a socket (38), the drive wheel axle including an eccentric pin (42) engaging with a drive axle to apply reciprocating motion to the drive axle, and the socket being configured to engage with a motor (14).

Description

Technical Field

[0001] This disclosure relates to a mounting assembly for a hair cutting tool and a hair cutting tool. Background Technology

[0002] Hair cutting instruments typically include a cutting unit, and it is advantageous that the cutting unit can pivot relative to the handle so as to follow the contours of the user's skin surface to create optimal contact between the user's skin and the cutting unit for best cutting performance. Summary of the Invention

[0003] According to a first specific aspect, a mounting assembly for a hair-cutting tool is provided, the mounting assembly comprising:

[0004] A head, configured to receive a cutting unit, and comprising:

[0005] The main body extends along the elongation axis;

[0006] A drive axle is configured to be coupled to the cutting unit and to reciprocate relative to the body along an elongation axis to reciprocate the cutting unit relative to the body.

[0007] Main head support surface; and

[0008] Separated secondary head support surface;

[0009] A mating member, pivotally coupled to the head, comprising:

[0010] A primary mating member support surface, configured to mate with a primary head support surface to allow sliding rotation of the mating member relative to the head about a first axis of rotation parallel to the elongation axis, and configured to contact the primary head support surface along a contact line to restrict movement of the head toward the mating member along a second axis perpendicular to the first axis of rotation; and

[0011] A secondary mating member support surface, separate from the primary mating member support surface and configured to mate with a secondary head support surface to allow sliding rotation of the mating member relative to the head about a first axis of rotation, and configured to support against the secondary head support surface to limit movement of the head relative to the mating member along a third axis perpendicular to the second axis and the first axis of rotation; and

[0012] The drive unit includes a drive shaft and a socket. The drive shaft includes an eccentric pin that engages with a drive axle to apply reciprocating motion to the drive axle, and the socket is configured to engage with a motor.

[0013] The primary head support surface and the primary mating support surface are separated from the secondary head support surface and the secondary mating support surface, respectively. This is intended to mean that the primary support surface and the corresponding secondary support surface are not adjacent, or not contiguous. It is permissible that the contact line between the primary head support surface and the primary mating support surface may be parallel to the first axis of rotation and the axis of elongation.

[0014] Yes, the main mating support surface is configured to contact the main head support surface along the contact line, which is intended to mean that the components only contact along the contact line, rather than surface contact.

[0015] It is permissible that the main head support surface has a curved surface with a first radius from the center point of the main head, and the radius of curvature of the main mating support surface about the center point of the main mating part is greater than the first radius.

[0016] When assembled, the center points of the main mating parts and the main head can be collinear with each other and with the first axis of rotation. The first radius can be equal to the radius of curvature of the supporting surface of the main mating parts.

[0017] It is permissible that the secondary head support surface includes a pair of opposing surfaces. It is also permissible that the secondary mating support surface has an arcuate section having a second radius about a first axis of rotation, wherein the second radius is smaller than the radius of curvature of the secondary head support surface.

[0018] The second radius can be equal to the radius of curvature of the secondary head support surface.

[0019] Possibly, each opposing surface of the secondary head support surface extending from the head includes a generally planar segment and a concave curved segment, wherein the concave curved segment is closer to the mating member along the second axis than the planar segment and is configured to contact the secondary mating member support surface to impede movement of the mating member away from the head.

[0020] It is possible that, during normal use, the concave bending section is configured not to contact the mating part, resulting in some manufacturing tolerances in the position of the head and the mating part along the second axis.

[0021] It is permissible for the opposing surfaces of the secondary head support surfaces to be substantially flat. It is permissible for the primary head support surface to be integral with the head body. It is permissible for the secondary head support surface to be integral with the head body. It is permissible for the primary head support surface to be convex. It is permissible for the primary mating member support surface to be substantially flat. It is permissible for the secondary mating member support surface to be convex.

[0022] Alternatively, the mounting assembly may also include a retaining element, which is coupled to one of the head and the mating part and configured to prevent separation of the head and the mating part by supporting the surface of the other of the mating part and the head.

[0023] Alternatively, the mounting assembly may also include a base that can be pivotally connected to the mating member about a secondary axis of rotation perpendicular to the axis of rotation.

[0024] The secondary axis of rotation can be aligned with the width axis of the main body. The secondary axis of rotation can also be parallel to the plane through which the main body extends.

[0025] According to a second aspect, a hair-cutting appliance is provided, comprising: a mounting assembly according to the first aspect; a motor configured to be coupled to a drive unit; and a handle configured to be attached to the mounting assembly.

[0026] These and other aspects will become apparent and will be illustrated with reference to one or more embodiments described below. Attached Figure Description

[0027] Exemplary embodiments will now be described by way of example only, with reference to the following figures, wherein:

[0028] Figure 1 A schematic side view of a hair-cutting instrument is shown; and

[0029] Figure 2 An exploded view of the first example installation components is shown schematically;

[0030] Figure 3 and Figure 4 The front cross-sectional view and side cross-sectional view of the first example mounted assembly are schematically shown; and

[0031] Figure 5 A perspective view of the second example installation component is shown schematically; and

[0032] Figure 6 An exploded view of the third example installation components is shown schematically. Detailed Implementation

[0033] Figure 1 A hair-cutting device 10 is shown, which includes a handle 12 for a user to hold the hair-cutting device 10, and a mounting assembly 20 attached to the handle 12. A motor 14 is disposed within the handle 12, and a drive shaft 16 extending from the motor 14 is coupled to the mounting assembly 20.

[0034] Figures 2 to 4A first example mounting assembly 20 is shown, which includes a head 22 configured to receive a cutting unit, a mating member 40 pivotally coupled to the head 22, and a drive unit 34.

[0035] The head 22 includes a body 24 extending along an elongation axis 50 and a drive axle 26. The head 22 is configured to receive a cutting unit, such as a blade. The drive axle 26 is configured to reciprocate relative to the body 24 along the elongation axis 50. The drive axle 26 is also coupled to the cutting unit such that when the drive axle reciprocates relative to the body 24, the cutting unit also reciprocates relative to the body 24 to enable it to cut hair.

[0036] The drive unit 34 includes a drive shaft 36 and a socket 38 fixed together. The socket 38 is configured to engage with the motor 14 via the shaft 16 to apply rotational motion to the socket 38 and the drive shaft 36 about their axes. The drive shaft 36 includes an eccentric pin 42 received in a channel of the drive axle 26 to engage with the drive axle 26 and apply reciprocating motion to the drive axle 26 by rotation of the drive shaft 36. The drive unit 34 is thus configured to convert the rotational motion of the motor 14 into the reciprocating motion of the drive axle 26. The socket 38 is configured to receive and engage with the shaft 16 at various angles, such that the socket 38 can pivotally move relative to the motor 14 without adversely affecting the ability of the drive unit 34 to convert the rotational motion of the motor 14 into the reciprocating motion of the drive axle 26.

[0037] The head 22 includes a head component 62 that is fixed to the body 24 and includes a main head support surface 44. The mating member 40 includes a main mating member support surface 46 that is configured to engage with the main head support surface 44 to allow sliding rotation of the mating member 40 relative to the head 22 about a first rotation axis 60 that is parallel to the elongation axis 50.

[0038] In this example, the main head support surface 44 has a curved surface with a first radius from the center point of the main head. In this example, the main head support surface 44 has a convex surface. In this example, the main mating member support surface 46 is planar. The main head support surface 44 contacts the main mating member support surface 46 to restrict the movement of the head 22 toward the mating member 40 along a second axis 30 perpendicular to the first rotation axis 60. In this example, the main head support surface 44 and the main mating member support surface 46 are in contact along a contact line. In other words, the main mating member support surface 46 and the main head support surface 44 are in contact only along a contact line. In this example, the contact line between the main head support surface 44 and the main mating member support surface 46 is parallel to the first rotation axis 60 and the elongation axis 50.

[0039] In other examples, surface contact may exist between the primary head support surface 44 and the primary mating support surface 46. The contact between these components is only along a contact line rather than a surface, meaning that the sliding between the head 22 and the mating part 40 is not overly constrained, thus allowing for lower tolerances in the radius of curvature of the components (i.e., the structure has higher tolerances for non-optimal radii). A flat mating support surface 46 is the simplest way to achieve a contact line between the head 22 and the mating part 40 and to maximize manufacturing and assembly tolerances.

[0040] In other examples, the primary mating member support surface may have a corresponding curved surface, rather than a planar surface, having a radius of curvature about the center point of the primary mating member that is greater than or equal to a first radius. The raised primary head support surface 44 allows the first axis of rotation 60 to approach the skin surface (i.e., the surface of the head 22, which is configured to contact the user's skin for cutting hair). In other words, the first axis of rotation 60 is located between the primary head support surface 44 and the cutting unit. In other examples, the primary head support surface may be concave or planar, wherein the primary mating member support surface is raised, and its radius of curvature is at least smaller than the surface area of ​​the primary head support surface. In such examples, during use, the first axis of rotation 60 will be further away from the skin surface; in other words, the primary head support surface will be located between the first axis of rotation and the cutting unit.

[0041] In this example, when assembled, the center point of the main head is collinear with the first axis of rotation 60, allowing the mating member 40 to rotate about the first axis of rotation 60 through the sliding contact between the main head support surface 44 and the main mating member support surface 46.

[0042] In this example, the head component 62 is separate from the body 24. The head component 62 is configured to be attached to the body 24 by slotting beneath a plurality of protrusions 64 projecting from the body 24. In other words, by moving the head component 62 along the elongation axis 60, it can slot beneath the protrusions 64 to attach the body 24 to the head component 62. In other examples, the head component 62 may be integral with the body 24.

[0043] In this example, the mating member 40 includes a cantilever protrusion 68 configured to engage with the head member 62 on the opposite side of the main head support surface 44. When assembled, the opposite side of the main head support surface 44 supports against the mating member 40 to restrict movement of the head 22 away from the mating member 40. Thus, the interaction between the mating member 40 and the head member 62 (i.e., the head 22) restricts movement of the head 22 away from and toward the mating member 40, while allowing sliding rotation between the mating member 40 and the head 22 about the first axis of rotation 60.

[0044] In this example, the main head support surface 44 includes two separate surfaces spaced apart along the elongation axis 50, and the main mating support surface 46 also includes two corresponding surfaces spaced apart along the elongation axis 50, in order to provide greater stability for the connection between the head 22 and the mating member 40 along the elongation axis 50.

[0045] In this example, the head component 62 of the head 22 also includes a secondary head support surface 52 separate from the primary head support surface 44, and the mating member 40 includes a secondary mating member support surface 54. The secondary mating member support surface 54 is separate from the primary mating member support surface 46.

[0046] The secondary head support surface 52 is configured to mate with the secondary mating member support surface 54 to allow sliding rotation between the mating member 40 and the head 22.

[0047] In this example, the secondary head support surface 52 includes two portions spaced apart along the elongation axis 50, and the secondary mating member support surface 54 also includes two corresponding surfaces spaced apart along the elongation axis 50. Spaced apart along the elongation axis means that the relative movement of the mating member 40 and the head 22 can also be restricted in the direction along the elongation axis 50.

[0048] In this example, each portion of the secondary head support surface 52 includes two opposing surfaces spaced apart along a third axis 70 perpendicular to both the first axis of rotation 60 and the second axis 30. In this example, the opposing surfaces are planar. In other examples, the opposing surfaces may include curved surfaces.

[0049] In this example, each portion of the secondary mating support surface has an arcuate section, which in this example is convex, and has a second radius about the first axis of rotation when assembled. If the secondary head support surface 52 is curved, the second radius is less than or equal to the radius of curvature of the secondary head support surface 52 (it should be noted that a plane can be considered to have an infinite radius of curvature). Making the second radius smaller than the radius of curvature of the secondary head support surface 52 prevents the mechanism from being over-constrained and allows for larger tolerances in manufacturing. In other examples, the second corresponding surface may have a pair of opposing planar or concave sections that support the convex secondary head support surface.

[0050] The secondary mating member support surface 54 is also configured to support the opposing surface of the secondary head support surface 52 to restrict the movement of the head 22 relative to the mating member 40 in both directions along the third axis 70. Therefore, the engagement between the primary head support surface 44 and the primary mating member support surface 46, and between the secondary head support surface 52 and the secondary mating member support surface 54, restricts the movement of the head 22 relative to the mating member 40 along the second axis 30 and the third axis 70, while the separation and disengagement of the support surfaces along the elongation axis 50 also restricts the movement of the head 22 relative to the mating member 40 along the elongation axis 50. Therefore, the only permitted movement is rotational movement of the head 22 relative to the mating member 40 about the first rotation axis 60.

[0051] In this example, the mounting assembly includes a base 80 configured to be attached to a mating member 40. In this example, the base 80 is secured to the mating member 40. In other examples, the base may be pivotally coupled to the mating member about a secondary axis of rotation perpendicular to the first axis of rotation 60. The secondary axis of rotation may (e.g., along a third axis 70) be aligned with the width of the body. The secondary axis of rotation may also be parallel to a plane through which the body extends.

[0052] Figure 5 A second example mounting assembly 120 is shown. The second example mounting assembly 120 is similar to the first example mounting assembly 20, but differs in that the head 22 includes a secondary head support surface 152 comprising two opposing surfaces, each including a generally planar segment 154 and a concave curved segment 156. The concave curved segment 156 is closer to the mating member 40 and the base 80 than the planar segment 154 and is configured to contact the secondary mating member support surface 158 to impede movement of the mating member 40 away from the head 22 (in other words, performing reference...). Figures 2 to 4 (The function of the described overhang protrusion 68). During normal use, the head 22 and the mating part 40 do not contact each other at the concave curved section 156 in order to reduce friction between them and to give higher manufacturing tolerances to the position of the head 22 relative to the mating part 40.

[0053] Figure 6 A third example mounting assembly 220 is shown. The third example mounting assembly 220 is similar to the first example mounting assembly 20 and the second example mounting assembly 120, but differs in that the head 22 includes a body 224 having a primary head support surface 44 and a secondary head support surface 52. In other examples, the body 224 may have only one of the primary head support surface 44 and the secondary head support surface 52.

[0054] A further difference between the third example mounting assembly 220 and the first example mounting assembly 20 and the second example mounting assembly 120 is that the mating member is integral with the base to form an integral mating member 240. In this example, a pair of retaining elements 272 are attached to the head 22 and configured to hold the integral mating member 240 in place relative to the head 22 by supporting it against the mating member 40, such that the main head support surface 44 contacts the corresponding main mating member support surface 46, and prevents separation of the head 22 and the integral mating member 240.

[0055] The mention that the primary head support surface and the primary mating support surface are separate from the secondary head support surface and the secondary mating support surface, respectively, is intended to mean that the primary support surface and the corresponding secondary support surface are not adjacent or contiguous.

[0056] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement variations of the disclosed embodiments in practicing the principles and techniques described herein. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude multiple. A single processor or other unit can perform the functions of several items listed in the claims. The fact that certain measures are referenced only in mutually different dependent claims does not imply that combinations of these measures cannot be used advantageously. Computer programs can be stored or distributed on suitable media, such as optical storage media or solid-state media provided with or as part of other hardware, but can also be distributed in other forms, such as via the Internet or other wired or wireless telecommunications systems. No reference numerals in the claims should be construed as limiting the scope.

Claims

1. A mounting assembly for a hair cutting tool, the mounting assembly comprising: A drive unit includes a drive shaft and a socket, the drive shaft including an eccentric pin that engages with a drive axle to apply reciprocating motion to the drive axle, and the socket being configured to engage with a motor. A head, configured to receive a cutting unit, and comprising: The main body extends along the elongation axis; The drive axle is configured to be coupled to the cutting unit and to reciprocate relative to the body along the elongation axis to reciprocate the cutting unit relative to the body; Main head support surface; and Separated secondary head support surfaces; and A mating member, pivotally coupled to the head, the mating member comprising: A primary mating member support surface, configured to mate with a primary head support surface to allow sliding rotation of the mating member relative to the head about a first axis of rotation, and configured to contact the primary head support surface along a contact line to restrict movement of the head toward the mating member along a second axis perpendicular to the first axis of rotation, the first axis of rotation being parallel to the elongation axis; and Secondary mating member support surface, which is separate from the primary mating member support surface and configured to engage with the secondary head support surface to allow sliding rotation of the mating member relative to the head about the first axis of rotation, and configured to support against the secondary head support surface to restrict movement of the head relative to the mating member along a third axis perpendicular to the second axis and the first axis of rotation.

2. The mounting component according to claim 1, wherein: The main head support surface has a curved surface, the curved surface having a first radius from the center point of the main head, and The radius of curvature of the center point of the main mating member on the support surface of the main mating member is greater than the first radius.

3. The mounting assembly according to claim 1 or 2, wherein: The secondary head support surface includes a pair of opposing surfaces; and The secondary mating member support surface has an arcuate section, the arcuate section having a second radius about the first axis of rotation, wherein the second radius is smaller than the radius of curvature of the secondary head support surface.

4. The mounting assembly of claim 3, wherein each opposing surface of the secondary head support surface extending from the head includes a generally planar segment and a concave curved segment, wherein the concave curved segment is closer to the mating member along the second axis than the planar segment and is configured to contact the secondary mating member support surface to impede movement of the mating member away from the head.

5. The mounting assembly of claim 3, wherein the opposing surfaces of the secondary head support surface are substantially planar.

6. The mounting assembly according to any one of claims 1 to 2, wherein the main head support surface is integral with the body of the head.

7. The mounting assembly according to any one of claims 1 to 2, wherein the secondary head support surface is integral with the body of the head.

8. The mounting assembly according to any one of claims 1 to 2, wherein the main head support surface is raised.

9. The mounting assembly according to any one of claims 1 to 2, wherein the main mating member support surface is substantially planar.

10. The mounting assembly according to any one of claims 1 to 2, wherein the secondary mating member support surface is raised.

11. The mounting assembly according to any one of claims 1 to 2, further comprising a retaining element, wherein the retaining element is coupled to one of the head and the mating member and is configured to prevent separation of the head and the mating member by supporting a surface abutting the other of the mating member and the head.

12. The mounting assembly according to any one of claims 1 to 2, further comprising a base pivotally connected to the mating member about a secondary axis of rotation perpendicular to the axis of rotation.

13. A hair cutting tool, comprising: The mounting component according to any one of claims 1 to 12; A motor, which is configured to be connected to the drive unit; as well as A handle, which is configured to be attached to the mounting assembly.

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