CN107772738A - Hand device - Google Patents

Abstract

The invention discloses a hand-held appliance having a body and an accessory, the body includes an outer tube and a fluid flow path extending from a fluid inlet to a fluid outlet within the outer tube, and a PCB arranged in the fluid flow path, wherein the PCB is housed in a housing . The body may also include an inner wall, and the inner wall provides a housing for the PCB, and the fluid flow path may extend around the housing. The housing may be generally rectangular and may extend across the inner radius of the outer tube. The fluid flow path may extend around both sides of the housing. The housing may include a heat sink that may be in contact with the fluid flow path on one side and the components on the PCB on the other side.

Description

handheld device

technical field

The present invention relates to a hand held appliance, and more particularly to a hair care appliance, such as a heat styling appliance.

Background technique

In conventional heat styling appliances, air is drawn into the inlet by a fan unit and directed towards the hair through the outlet. Typically, an appliance is provided with different attachments, each with a different outlet and therefore a different function, such as drying, curling or volumizing. Depending on the desired styling, the air may or may not be heated. The attachment may include bristles on which the hair is wrapped and held for styling.

Contents of the invention

Accordingly, the present invention provides a handpiece having a body comprising an outer tube and a fluid flow path within the outer tube extending from a fluid inlet to a fluid outlet, and a PCB disposed within the fluid flow path, wherein the PCB is housed in inside the shell.

Preferably, the body also includes an inner wall, and the inner wall provides a housing for the PCB.

In a preferred embodiment, the fluid flow path extends around the housing.

Preferably, the housing is substantially rectangular and extends across the inner radius of the outer tube.

In a preferred embodiment, the fluid flow path extends around both sides of the housing.

Preferably, the housing includes a heat sink.

In a preferred embodiment, the heat sink is in contact with the fluid flow path on one side and the components on the PCB on the other side.

Preferably, the heat sink comprises metal sheets.

In a preferred embodiment, the sheet metal is sealed relative to the housing.

Preferably, the upstream end of the housing is connected to an electrical connector in the body.

In a preferred embodiment, the downstream end of the housing is bent around the end of the PCB.

Preferably, the fluid flow path is divided by the housing into a first fluid flow path and a second fluid flow path.

In a preferred embodiment, at the downstream end of the housing, the first fluid flow path and the second fluid flow path are joined.

Preferably, the housing is formed in two parts.

In a preferred embodiment the housing forms part of the inner wall and the inner wall is formed in two parts.

Preferably, the inner wall additionally accommodates a fan unit.

In a preferred embodiment, around the PCB, the inner wall is generally rectangular in shape and around the fan unit, the inner wall is generally circular in shape.

Preferably, the housing forms part of the inner wall and the fluid flow path extends around the housing between the inner wall and the outer tube.

According to a second aspect, the present invention provides a handpiece having a body and an accessory, the body comprising an outer tube and a fluid flow path extending within the outer tube from a fluid inlet to a fluid outlet, and an inner wall extending within the outer tube, wherein a portion of the inner wall A housing for the PCB is formed, and wherein, at the housing, a fluid flow path extends between the outer tube and the inner wall.

In a preferred embodiment a part of the inner wall forms a second housing for the fan unit, wherein at the second housing the fluid flow path extends within the inner wall.

Preferably, a part of the inner wall forms a third housing for the heater, wherein at the third housing the fluid flow path extends within the inner wall.

Preferably, the appliance is a hair care appliance.

In a preferred embodiment, the hair care appliance is a heat styling appliance.

Description of drawings

The invention will now be described by way of example with reference to the accompanying drawings, in which:

Figure 1 shows an appliance on which an attachment mechanism according to the invention can be used;

Figure 2 shows a cross-section through a part of an appliance according to the invention;

Figure 3 shows a cross-section through an inner wall according to the invention;

Figure 4 shows an isometric view of a housing according to the invention; and

Figure 5 shows different isometric views of the housing according to the invention.

Detailed ways

Referring to FIG. 1 , an example of a handpiece 10 is shown. The appliance has a handle 210 and an attachment 20 for styling the hair. In order to enable the user to create different shapes and give the appliance multiple functions, the accessory 20 is detachable and can be replaced with alternative accessories. Additionally, the accessory 20 can be removed for easy storage of the appliance when not in use.

The handle 210 includes a number of different user-operated buttons 38, 138 that enable the user to select between a number of different heat and flow settings. The handle 210 is formed by an outer tube 200 and includes a PCB 90 , a fan unit 70 (including a fan and a motor), a heater 80 (both schematically shown) and an inner wall 220 . In use, fan unit 70 draws fluid through fluid inlet 212 , fluid passes PCB 90 , is drawn through fan unit 70 , and passes heater 80 , which optionally heats the fluid, which is then pumped from accessory 20 The fluid outlet 22 is issued. Fluid inlet 212 is the upstream end of the fluid flow path.

Inner wall 220 provides a structure within which components within handle 210 may be placed. This simplifies manufacturing and reduces product variation. In particular, the inner wall 220 conveniently provides a housing 222 for the PCB 90 . This is not necessary as the housing can be a separate part from the inner wall, but it is convenient as it reduces the number of parts.

The PCB 90 is a printed circuit board on which electronic components are mounted. When the appliance is in use, some of these parts may heat up and require cooling. While it is possible to place the PCB in direct contact with the fluid flow path, this increases turbulence in the flow through the appliance and increases noise, so the housing 222 is provided with a heat sink 224 . The heat sink 224 can be any material that conducts heat, in this embodiment it is a sheet metal. A rubber gasket or seal extends between the heat sink 224 and the housing 222 .

The housing 222 is generally rectangular, and in this embodiment the width W of the housing corresponds to the inner radius of the outer tube 200 , and the housing 222 is disposed along the longitudinal axis Y-Y of the handle 210 . Fluid entering fluid flow path 50 at fluid inlet 212 may pass through either side of PCB 90 within housing 222 . The fluid flow path 50 extends between the inner wall 220 and the outer wall 200 at this location within the fluid flow path 50 .

The outer tube 200 is supported by the housing 222 in one direction, and in order to support this at 90°, a pair of support fins 226 are provided extending from the housing 222 to the outer tube 210 .

Conveniently, the housing 222 and the inner wall 220 are formed in two parts so that the PCB 90 can be arranged in one part 222a of the housing and then attached to the other part 222b of the housing.

At the upstream end 90a of the PCB 90, the housing is connected to an electrical connector 100 (schematically shown). The electrical connector 100 connects the wiring in the appliance to mains power via a power cord 102 . Conveniently, the electrical connector is housed within the inner wall 220 in the connector housing 104 connected to the upstream end 22 of the housing 222 .

At the downstream end 90b of the PCB 90 the two parts 222a, 222b of the housing are bent towards each other and the center until they meet at the joint 228 . Ideally, along the entire length of the housing 222, the surfaces presented to the fluid flow path 50 are smooth with no angular transitions so as to disturb the flow as little as possible.

The immediately adjacent components in the fluid flow path 50 are the fan unit 70 followed by the heater 80 . In order for these components to work effectively, the fluid flow path 50 must pass through them. Thus, downstream of the housing, an inner wall 220 extends from diametrically opposite sides 30 , 32 of the housing 222 into a circular wall 24 housing the fan unit 70 and the heater 80 . At this point, the fluid flow path 50 extends within the inner wall 220 and becomes a single circular flow instead of two approximately semicircles formed around the housing 222 of the PCB 90 . The inner wall 220 may be considered to include the fan unit housing 72 and the heater housing 82 .

The invention has been described in detail with respect to a thermal styling device, however, it is applicable to any appliance that draws fluid in and directs fluid out of the appliance.

The appliance can be used with or without a heater; the action of the high-velocity flow of fluid has a drying effect.

The fluid flowing through the appliance is usually air, but can be a different gas or a different combination of gases, and can include fluids used to improve the performance of the appliance or the object to which the appliance directs the output (such as hair and hair styling). Affected additives.

The invention is not limited by the foregoing detailed description. Modifications will be apparent to those skilled in the art.

Claims (23)

1. a kind of hand device, has body and annex, the body includes outer tube and extended in outer tube from fluid intake The fluid flow path of fluid issuing, and the PCB being arranged in fluid flow path, wherein, the PCB is accommodated in housing It is interior.

2. utensil according to claim 1, wherein, the body also includes inwall, and the inwall is that the PCB is carried For housing.

3. utensil according to claim 1 or 2, wherein, the fluid flow path extends around the housing.

4. utensil according to claim 3, wherein, the housing is general rectangular and extends across the outer tube Inside radius.

5. the utensil according to claim 3 or 4, wherein, the fluid flow path extends around the both sides of the housing.

6. utensil according to claim 1, wherein, the housing includes radiator.

7. utensil according to claim 6, wherein, the radiator contacts simultaneously on side with the fluid flow path And on another side with the component contact on PCB.

8. the utensil according to claim 6 or 7, wherein, the radiator includes sheet metal.

9. utensil according to claim 6, wherein, the sheet metal is sealed relative to the housing.

10. utensil according to claim 1, wherein, the upstream end of the housing is connected to the electrical connection in the body Device.

11. utensil according to claim 1, wherein, the downstream of the housing is bent around the end of the PCB.

12. utensil according to claim 1, wherein, the fluid flow path is divided into first fluid stream by the housing Dynamic path and second fluid flowing path.

13. utensil according to claim 10, wherein, in the downstream end of the housing, the first fluid flows road Footpath and second fluid flowing path are combined.

14. utensil according to claim 1, wherein, the housing is formed as two parts.

15. utensil according to claim 14, wherein, the housing forms a part for inwall, and the inwall shape As two parts.

16. utensil according to claim 15, wherein, the inwall accommodates fan unit in addition.

17. utensil according to claim 16, wherein, around the PCB, the shape of the inwall is general rectangular , and the fan unit is surrounded, the shape of the inwall is automatic adjustment.

18. utensil according to claim 1, wherein, the housing forms a part for inwall, and the flow of fluid Path extends around the housing between inwall and outer tube.

19. a kind of hand device, has body and annex, the body includes outer tube and extended in outer tube from fluid intake The fluid flow path of fluid issuing, and the inwall extended in outer tube, wherein, a part for the inwall, which is formed, to be used for PCB housing, and wherein, at the housing, the fluid flow path extends between outer tube and inwall.

20. the utensil according to claim 18 or 19, wherein, a part for the inwall forms for fan unit Two housings, wherein, at second housing, the fluid flow path extends in inwall.

21. utensil according to claim 18, wherein, a part for the inwall forms the 3rd shell for heater Body, wherein, at the 3rd housing, the fluid flow path extends in inwall.

22. utensil according to claim 1, wherein, the utensil is hair care appliance.

23. utensil according to claim 22, wherein, the hair care appliance is hot styling appliance.