Personal handheld appliance

Abstract

The personal handheld appliance comprises an inner shell, an outer shell and a main control board arranged between the inner shell and the outer shell, a motor and / or a battery are / is assembled in the inner shell, the main control board comprises a first side face and a second side face which are oppositely arranged, the first side face faces the inner shell, and the second side face faces the outer shell. The second side surface faces the shell; the inner shell is provided with a first wire passing hole, the main control board is provided with a second wire passing hole, the second wire passing hole penetrates through the first side face and the second side face, and the first wire passing hole and the second wire passing hole at least partially coincide in the penetrating direction of the first wire passing hole. By adopting the structural design, the stability of wire connection is ensured, and the service life of the appliance is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of personal appliances, and in particular to a personal handheld appliance. Background Art

[0002] Personal care appliances are becoming more and more advanced, and therefore often need to incorporate electronic components to provide new and / or improved consumer benefits. Care appliances such as electric toothbrushes, shavers, and facial cleansers are becoming more and more popular due to their small size and portability.

[0003] Due to the lightweight design of the device, the internal circuit connection is required to be more reliable. Most of the existing nursing appliances include a bracket, a main control board and a motor. The main control board and the motor are both installed on the bracket. The conductive wires led out from the motor are wrapped around the side of the main control board to the exposed surface of the main control board, and then the conductive wires are manually welded to the main control board to achieve electrical connection between the motor and the main control board.

[0004] However, the above wiring method will increase the curvature of the wire, thereby cutting the wire. When the electric toothbrush is working, it will vibrate, causing the wire to shake, especially the two ends of the line are easily detached from the soldering point in the bent state, thereby affecting the use effect of the care device.

[0005] In view of this, it is necessary to provide a handheld nursing device that can ensure stable line connection to solve the above problems. Utility Model Content

[0006] The main purpose of the present application is to provide a personal handheld device, which aims to solve the technical problems that the existing wire routing path is long and the wire is sheared due to the misalignment between the wire threading holes in the wire threading path.

[0007] To achieve the above-mentioned purpose, the present application proposes a personal handheld device, including an inner shell, an outer shell and a main control board arranged between the inner shell and the outer shell, wherein a motor and / or a battery are assembled in the inner shell, and the main control board includes a first side surface and a second side surface arranged relatively to each other, wherein the first side surface faces the inner shell and the second side surface faces the outer shell; the inner shell has a first wire passing hole, and the main control board has a second wire passing hole, the second wire passing hole passes through the first side surface and the second side surface, and the first wire passing hole and the second wire passing hole at least partially overlap along the penetration direction of the first wire passing hole.

[0008] The above technical solution is further improved as follows:

[0009] Furthermore, the personal handheld device also includes a flexible circuit board, a portion of which is located in the inner shell and electrically connected to the motor and / or battery, and another portion of the flexible circuit board passes through the first wire passing hole and the second wire passing hole.

[0010] Furthermore, the first wire passing hole and the second wire passing hole are respectively flat.

[0011] Furthermore, the main control board is in the shape of an elongated strip in the length direction of the inner shell, and the second side surface is provided with a conductive terminal, the conductive terminal and the second wire passing hole are spaced apart along the length direction of the main control board, the width direction of the second wire passing hole is along the length direction of the main control board, and the length direction of the second wire passing hole is along the width direction of the main control board.

[0012] Furthermore, the aperture of the first wire passing hole is larger than the aperture of the second wire passing hole.

[0013] Furthermore, an orthographic projection of the second wire passing hole on the inner shell is located inside the first wire passing hole.

[0014] Furthermore, the inner wall surface of the inner shell is also provided with a limiting convex rib, and the limiting convex rib is used for abutment of one end of the motor, and the limiting convex rib is arranged at a position adjacent to the first wire passing hole.

[0015] Furthermore, the inner wall surface of the inner shell is provided with two limiting ribs, the two limiting ribs are distributed along the circumference of the inner shell, the limiting rib and the first wire passing hole are both long strips and extend along the circumference of the inner shell, and the first wire passing hole is located between the two limiting ribs.

[0016] Furthermore, the inner shell has a mounting surface arranged parallel to the first side surface, the main control board is fixed to the mounting surface, and the first side surface is in contact with the mounting surface.

[0017] Furthermore, the first wire passing hole passes through the mounting surface.

[0018] Furthermore, one of the inner shell and the main control board is provided with a positioning protrusion, and the other is provided with a positioning groove plug-fitted with the positioning protrusion.

[0019] Due to the adoption of the above technical solution, the utility model has the following technical effects:

[0020] A first wire passing hole is provided on the inner shell of the personal handheld device of the utility model, and a second wire passing hole is provided on the main control board, and the first wire passing hole and the second wire passing hole at least partially overlap along the penetration direction of the first wire passing hole, so that the wire has a passing path from the inner shell to the second side through the first side; in this way, not only can the routing path of the wire be shortened, but also the wire can be prevented from being sheared due to the misalignment of the first wire passing hole and the second wire passing hole on the passing path; in addition, the wire can be limited to ensure the stability of the welding points at both ends of the wire, thereby improving the service life of the handheld device.

[0021] In addition, one of the inner shell and the main control board is provided with a positioning protrusion, and the other is provided with a positioning groove that is plugged into and cooperates with the positioning protrusion, so that the main control board can be positioned on the inner shell in a manner that the first wire passing hole and the second wire passing hole can be roughly aligned, thereby improving the assembly efficiency of the main control board and the inner shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The structure diagram of the personal handheld device in the utility model is shown.

[0024] Figure 2 The utility model shows a schematic structural diagram of the inner shell and the main control board.

[0025] Figure 3 The front view of the inner shell and the main control board of the utility model is shown.

[0026] Figure 4 The utility model shows an exploded schematic diagram of the inner shell and the main control board.

[0027] Figure 5 The schematic diagram of the structure of the inner shell in the utility model is shown.

[0028] Figure 6 The exploded schematic diagram of the inner shell in the utility model is shown.

[0029] Figure 7 A schematic diagram of the structure of the flexible circuit board passing through the first wire passing hole and the second wire passing hole in the utility model is shown. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that, in the description of this application, if the terms "first", "second", etc. appear, "first" and "second" are only used to facilitate the description of different components or names, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" appears in the full text, its meaning is that it includes three parallel solutions, taking "A and / or B as an example", including Solution A, or Solution B, or a solution that satisfies both A and B.

[0032] Example 1

[0033] See also Figures 1 to 6 As shown, the utility model provides a personal handheld device, which includes a handle 100, the handle 100 includes an inner shell 20, an outer shell 1 and a main control board 3 arranged between the inner shell 20 and the outer shell 1, the inner shell 20 is assembled with a motor 5 and / or a battery 6, the main control board 3 includes a first side surface and a second side surface arranged opposite to each other, wherein the first side surface faces the inner shell 20, and the second side surface faces the outer shell 1; the inner shell 20 is provided with a first wire passing hole 23 for at least one wire to pass through, and the main control board 3 is provided with a second wire passing hole 31 for the wire to pass through, and the wire has a passing path from the inner shell 20 to the second side surface via the first side surface; wherein the main control board 3 is positioned on the inner shell 20 in a manner that the second wire passing hole 31 is substantially aligned with the first wire passing hole 23, so as to prevent the wire from being sheared due to misalignment of the first wire passing hole 23 and the second wire passing hole 31 on the passing path, so as to ensure the stability of the connection between the wire and the main control board 3.

[0034] It should be noted that shear refers to the displacement deformation of the cross section of a component along the direction of the external force under the action of a pair of closely spaced and oppositely directed lateral external forces. In this embodiment, the first wire passing hole 23 and the second wire passing hole 31 are aligned, which solves the technical problem in the prior art that the wires between the motor 5 and / or battery 6 and the main control board 3 in the handheld device are sheared and deformed in the insertion path due to the misalignment of the first wire passing hole 23 and the second wire passing hole 31, thereby affecting the service life of the wires.

[0035] Since there are many electronic components on the main control board 3, it is not conducive to open a too large wire hole. Moreover, during assembly, the electric wire is first passed through the larger wire hole for pre-positioning and installation. Therefore, in this embodiment, the aperture of the first wire hole 23 is larger than the aperture of the second wire hole 31, and the orthographic projection of the second wire hole 31 on the inner shell 20 is located in the first wire hole 23, so that the wire or the flexible circuit board 4 can pass through. When installing, first pass the flexible circuit board 4 through the first wire hole 23 with a larger aperture. The larger first wire hole 23 facilitates the smooth passage of the flexible circuit board 4 and pre-positions the flexible circuit board 4. Then, pass the flexible circuit board 4 through the second wire hole 31 with a smaller aperture. The second wire hole 31 with a smaller aperture can limit the flexible circuit board 4 more accurately.

[0036] like Figure 4 As shown, the first wire hole 23 and the second wire hole 31 are respectively flat, adapted to the shape of the flat flexible circuit board 4, and are convenient for the flat flexible circuit board 4 or the wire to pass through. Optionally, the first wire hole 23 and the second wire hole 31 can also be configured as rectangular holes or waist-shaped holes. In addition, the shapes of the first wire hole 23 and the second wire hole 31 can be completely different, for example, the first wire hole 23 is configured as a waist-shaped hole, the second wire hole 31 is configured as a rectangular hole, etc., or the first wire hole 23 is configured as a rectangular hole, and the second wire hole 31 is configured as a waist-shaped hole. In this embodiment, the first wire hole 23 and the second wire hole 31 are both configured as rectangular holes to ensure the fit between the first wire hole 23 and the second wire hole 31.

[0037] The main control board 3 is in the shape of an elongated strip in the length direction of the inner shell 20, and a conductive terminal 7 is provided on the second side surface. The conductive terminal and the second wire-passing hole 31 are spaced apart along the length direction of the main control board 3, and the width direction of the second wire-passing hole 31 is along the length direction of the main control board 3. The length direction of the second wire-passing hole 31 is along the width direction of the main control board 3. When the flexible circuit board 4 passes through the second wire-passing hole 31, the thickness direction of the flexible circuit board 4 is arranged along the width direction of the second wire-passing hole 31, and the width direction of the flexible circuit board 4 is arranged along the length direction of the second wire-passing hole 31. Finally, the flexible circuit board 4 is bent after passing through the second wire-passing hole 31 and extends along the second side surface to connect with the conductive terminal 7, thereby realizing the connection between the flexible circuit board 4 and the main control board 3. In this way, the flexible circuit board 4 only needs to be bent once. Among them, Figure 4 The length direction and width direction marked in refer to the length direction and width direction of the main control board 3 .

[0038] like Figures 2 to 6As shown, the first wire-passing hole 23 is formed in the middle of the mounting side wall 22, and the second wire-passing hole 31 is formed in the middle of the main control board 3, wherein the wiring terminals of the motor 5 and / or the battery 6 are close to the second wire-passing hole 31, thereby reducing the length of the wire used and improving the connection efficiency of the circuit. The inner shell 20 also includes an inner side surface arranged relative to the mounting side wall 22, and a limiting rib 21c is arranged on the inner side surface. The limiting rib 21c is used to abut against one end of the power supply 5, and the limiting rib 21c is arranged at a position adjacent to the first wire-passing hole 23. The limiting rib 21c has multiple functions. On the one hand, it can enhance the shell strength of the inner shell 20, and on the other hand, it can also play a partitioning role to separate the motor 5 and the battery 6 and position both.

[0039] Optionally, two limiting convex ribs 21c are provided on the inner wall surface of the inner shell 20, and the two limiting convex ribs 21c are spaced apart along the circumference of the inner shell 20. The limiting convex ribs 21c and the first wire-passing hole 23 are both in the shape of long strips and extend along the circumference of the inner shell 20, and the first wire-passing hole 23 is located between the two limiting convex ribs 21c. In this way, the two limiting convex ribs 21c can play a structural reinforcement role on both sides of the first wire-passing hole 23, avoiding the situation where the inner shell 20 is insufficient in strength due to the opening of the first wire-passing hole 23.

[0040] In this embodiment, one side of the inner shell 20 has a mounting side wall 22 for combining with the main control board 3, and the mounting side wall 22 has a mounting surface 22a arranged parallel to the first side surface, and the size of the mounting surface 22a is substantially the same as that of the one side surface, so that when the main control board 3 is joined to the mounting surface 22a, its edge does not exceed the edge of the mounting surface 22a, thereby protecting the main control board 3.

[0041] Furthermore, one of the inner shell 20 and the main control board 3 is provided with a positioning protrusion 24, and the other is provided with a positioning groove 32 that is plugged into and cooperates with the positioning protrusion 24, so that when the first side of the main control board 3 is assembled to the mounting side wall 22 of the inner shell 20, the second wire hole 31 is roughly aligned with the first wire hole 23, so that the wire passes through the main control board 3 and the mounting side wall 22. In this way, the routing path of the wire can be shortened, and the bending degree of the wire can also be reduced, and the shear force on the wire when it is bent can be reduced. The wire can also be limited to reduce the shaking of the wire when the handle 100 is working, thereby ensuring the stability of the circuit connection between the main control board 3 and the motor 5 and / or the battery 6. Specifically, there are multiple positioning protrusions 24, and they are respectively arranged on the peripheral side of the mounting surface 22a, so that the first side of the main control board 3 is roughly aligned with the mounting surface 22a. As shown Figures 2 to 5 As shown, the positioning protrusions 24 are respectively arranged on the left and right sides and the upper and lower sides of the installation surface 22a, and the main control board 3 is limited from four directions, so that the main control board 3 and the inner shell 20 can be quickly and accurately positioned and installed, and at the same time, the first wire hole 23 and the second wire hole 31 can be aligned.

[0042] Further, in order to enable the main control board 3 to be fixedly connected to the inner shell 20, the positioning protrusion 24 includes a hook portion 24a, and the lower end surface of the hook portion 24a abuts against the second side surface of the main control board 3 to limit the movement of the main control board 3. Optionally, the lower end surface of the hook portion 24a is configured as an abutting surface parallel to the second side surface, and the upper end thereof has an inclined guide surface for guiding the installation of the main control board 3.

[0043] In addition, the main control board 3 has a plurality of positioning grooves 32 matched with the positioning protrusions 24, which further improves the installation accuracy of the main control board 3 and the inner shell 20 and ensures the overlap between the first wire passing hole 23 and the second wire passing hole 31.

[0044] like Figure 6 As shown, the inner shell 20 includes a first shell 21a and a second shell 21b that are relatively arranged. The inner walls of the first shell 21a and the second shell 21b are provided with elastic linings for limiting the battery 6 and the motor 5, which can reduce the vibration of the inner shell 20 caused by external impact force, and also reduce the shaking of the motor 5 and / or the battery 6 during use, thereby ensuring the stability of the connection between the wires and the motor 5 and the battery 6, and ensuring the use effect of the handle 100.

[0045] The handheld care appliance of the utility model can be an electric toothbrush, a shaver, a facial cleanser, etc., and has a wide range of applications and good use effects.

[0046] Example 2

[0047] like Figure 7 As shown, the difference between this embodiment and embodiment 1 is that the personal handheld device further includes a flexible circuit board 4, a portion of which is located in the inner shell 20 and is electrically connected to the motor 5 and / or the battery 6, and another portion of the flexible circuit board 4 passes through the first wire hole 23 and the second wire hole 31. Optionally, the first wire hole 23 and the second wire hole 31 are flat, respectively, to facilitate the passage of the flexible circuit board 4. In addition, the remaining structures in this embodiment are the same as those in embodiment 1, and will not be described again here.

[0048] In some embodiments, the motor 5 is located above the battery 6, the flexible circuit board 4 is arranged between the motor 5 and the battery 6, the flexible circuit board 4 is electrically connected to the lower end of the motor 5, and the flexible circuit board 4 is electrically connected to the main control board 3 after passing through the first wire hole 23 and the second wire hole 31, thereby realizing the control of the motor 5 by the main control board 3.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A personal handheld device, comprising an inner shell, an outer shell, and a main control board disposed between the inner shell and the outer shell, wherein a motor and / or a battery is assembled in the inner shell, and the main control board comprises a first side surface and a second side surface arranged opposite to each other, wherein the first side surface faces the inner shell, and the second side surface faces the outer shell; characterized in that: The inner shell has a first wire passing hole, the main control board has a second wire passing hole, the second wire passing hole passes through the first side surface and the second side surface, and the first wire passing hole and the second wire passing hole at least partially overlap along the penetration direction of the first wire passing hole.

2. The personal handheld device according to claim 1, characterized in that: The personal handheld device also includes a flexible circuit board, a portion of which is located in the inner shell and electrically connected to the motor and / or the battery, and another portion of the flexible circuit board passes through the first wire passing hole and the second wire passing hole.

3. The personal handheld device according to claim 2, characterized in that: The first wire passing hole and the second wire passing hole are respectively flat.

4. The personal handheld device according to claim 3, characterized in that: The main control board is in the shape of an elongated strip along the length direction of the inner shell, and the second side surface is provided with a conductive terminal. The conductive terminal and the second wire passing hole are spaced apart along the length direction of the main control board, and the width direction of the second wire passing hole is along the length direction of the main control board.

5. The personal handheld device according to any one of claims 1 to 4, characterized in that: The aperture of the first wire passing hole is larger than the aperture of the second wire passing hole.

6. The personal handheld device according to claim 5, characterized in that: The orthographic projection of the second wire-passing hole on the inner shell is located inside the first wire-passing hole.

7. The personal handheld device according to claim 1, characterized in that: The inner wall surface of the inner shell is further provided with a limiting convex rib, and the limiting convex rib is used for abutting one end of the motor, and the limiting convex rib is arranged at a position adjacent to the first wire passing hole.

8. The personal handheld device according to claim 7, characterized in that: The inner wall surface of the inner shell is provided with two limiting ribs, and the two limiting ribs are distributed along the circumference of the inner shell. The limiting ribs and the first wire passing hole are both long strips and extend along the circumference of the inner shell. The first wire passing hole is located between the two limiting ribs.

9. The personal handheld device according to claim 1, characterized in that: The inner shell has a mounting surface arranged parallel to the first side surface, the main control board is fixed to the mounting surface, the first side surface is in contact with the mounting surface, and the first wire hole passes through the mounting surface.

10. The personal handheld device according to claim 1, characterized in that: One of the inner shell and the main control board is provided with a positioning protrusion, and the other is provided with a positioning groove plugged and matched with the positioning protrusion.

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