CN218220427U

CN218220427U - Electric heating hand warmer

Info

Publication number: CN218220427U
Application number: CN202221625139.1U
Authority: CN
Inventors: 杨铭
Original assignee: Ningbo Youbang Electric Appliance Co ltd
Current assignee: Ningbo Youbang Electric Appliance Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2023-01-06
Anticipated expiration: 2032-06-27

Abstract

The application relates to an electric heat hand warmer, include: the base is provided with a charging interface, a heating wire electrically connected with the charging interface and a contact switch arranged on the heating wire; the shell is arranged on the base and is in sealing connection with the base; the heating liquid is positioned between the silica gel shell and the base, can be heated and vaporized and is contained between the shell and the base; the edge of the elastic sheet is fixedly sealed on the base and covers the right upper part of the contact switch; the heater wire is positioned in the heated liquid when energized. Heating liquid can vaporize gradually in the heating process, along with gaseous increase, pressure between shell and the base can crescent, the heating liquid body also can increase progressively to the pressure of flexure strip, the deformation volume of flexure strip can grow gradually, after the flexure strip becomes to reach the certain degree, the flexure strip can touch contact switch so that the heater wire outage, above-mentioned process can not destroy hand warmer, reduced hand warmer the risk of damage in the charging and heating process, prolonged hand warmer's life.

Description

Electric heating hand warmer

Technical Field

The application relates to the charging protection field of electric heating hand warmer, in particular to an electric heating hand warmer.

Background

The hand warmer is an automatic warming health care product developed by applying physical and chemical principles. The product is popular with the public with the novel and unique advantages of automatic heating, interest, practicality and the like, and the hand warmer has multiple functions of automatic heating, physical therapy, health care and the like.

The precious main supporting facility of hand warmer is the charging seat, then will warm hand on the precious charging seat of placing, the interface that charges on the precious interface of hand and the charging seat that charges on the hand warmer communicates to the charging seat heats hand warmer, makes the inside heating fluid body intensification of hand warmer, treats that hand warmer heats after the certain time, will warm hand and take off from the charging seat, with the damage or the emergence safety problem that avoid the inside heating fluid body high temperature of hand warmer to lead to. Therefore, the hand warmer that uses at present can install the fuse on the heating wire usually, however when charging the hand warmer, the user can forget sometimes and take off the hand warmer from the charging seat for heating liquid in the hand warmer is continuously heated, and after the heating liquid reachd the uniform temperature, the fuse on the heating wire of hand warmer inside can take place to fuse in order to protect the hand warmer, in order to avoid the damage that the hand warmer leads to or take place the safety problem. However, the fuse melts the back, then means that the hand warmer takes place to damage, and the user needs to maintain or change the hand warmer, has reduced the rate of utilization of hand warmer, and the high temperature of the liquid of heating simultaneously also can shorten hand warmer's life.

Disclosure of Invention

In order to better protect the hand warmer in the charging and heating process and avoid the safety problem caused by the overhigh temperature of the heating liquid in the hand warmer, the application provides the electric heating hand warmer, the heating liquid between the shell and the base is heated by utilizing the heating wire, after the heating liquid is vaporized and contained between the shell and the base, along with the increase of the vaporized heating liquid, the pressure between the shell and the base can be gradually increased, at the moment, the pressure of the heating liquid on the elastic sheet on the base can be increased, the deformation quantity of the elastic sheet is increased, after the pressure between the shell and the base reaches a set value, the elastic sheet can touch the contact switch to cut off the power of the heating wire, the heating wire can not heat the heating liquid any more, the hand warmer cannot be damaged in the process, after the temperature of the heating liquid in the hand warmer is reduced, the hand warmer can be continuously and normally used, the risk of the damage or the safety problem caused by the overhigh temperature of the heating liquid in the charging and heating process of the hand warmer is reduced, and the service life of the hand warmer is prolonged.

The technical scheme is as follows:

an electric heating hand warmer, comprising:

the base is provided with a charging interface, a heating wire electrically connected with the charging interface and a contact switch arranged on the heating wire;

the shell is arranged on the base and is in sealing connection with the base;

the heating liquid is positioned between the silica gel shell and the base, can be heated and vaporized and is contained between the shell and the base; and

the edge of the elastic sheet is fixedly sealed on the base and covers the contact switch, and the elastic sheet is used for being pressed to deform to trigger the contact switch so as to cut off the power of the heating wire;

wherein the heater wire is positioned in the heated liquid when energized.

Preferably, the housing is a flexible housing.

Preferably, the flexible shell is a silica gel shell.

Preferably, the heating wire is also electrically connected with a temperature control protection device.

Preferably, a fuse is electrically connected to the heating wire.

Preferably, the interface that charges is located the bottom in the base outside, the heater wire is located between base and the shell, the heater wire passes the base is connected with the interface electricity that charges, the through wires hole has been seted up on the base, the through wires hole is the horn mouth, the horn mouth department is sealed to the heater wire outside.

Preferably, the heater wire twines on the base, the base top is equipped with the clamp plate, clamp plate edge is located directly over the heater wire and is used for preventing the heater wire from droing on the base.

Preferably, the outer wall of the silica gel shell is provided with anti-skid grains.

To sum up, the application comprises the following beneficial technical effects:

1. this hand is warmed up to electric heat is precious in the charging process, and when the heating fluid pressure of vaporization was higher between heating fluid body and shell, liquid heating liquid can extrude the flexure strip and touch contact switch, makes the heater wire broken string to the heater wire is no longer heated liquid in liquid, has reduced the risk that the hand is precious takes place the safety problem in the heating process that charges, has prolonged hand is precious life.

2. Protect hand warmer through setting up three kinds of protection modes of flexure strip touch contact switch, control by temperature change protection device and fuse, reduced hand warmer charging process because of the too high damage that leads to of heating fluid temperature or the risk that takes place safety problem.

Drawings

Fig. 1 is a schematic structural diagram of an electric heating hand warmer charging on a charging base in the embodiment of the application.

Fig. 2 is a schematic cross-sectional structure diagram of an electric heating hand warmer in the embodiment of the present application.

Fig. 3 is a schematic diagram illustrating a structure of a heating wire according to an embodiment of the present application.

Fig. 4 is a schematic view illustrating a structure in which a heater wire is connected to a base in an embodiment of the present application.

Description of reference numerals: 100. a charging seat; 1. a base; 11. a charging interface; 12. a heating wire; 13. a contact switch; 14. threading holes; 2. a housing; 3. heating a liquid; 4. an elastic sheet; 5. a temperature control protection device; 6. a fuse; 7. and (7) pressing a plate.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, an embodiment of the present application discloses an electric hand warmer, which utilizes a charging stand 100 to perform charging and heating.

Referring to fig. 2, the electric hand warmer includes a base 1, a casing 2, a heating liquid 3, and an elastic sheet 4.

The base 1 is provided with a charging interface 11, a heating wire 12 and a contact switch 13. The charging interface 11 is fixedly installed on the outer side of the bottom of the base 1, and two ends of the heating wire 12 are electrically connected with the charging interface 11 to form a closed loop; the contact switch 13 is installed inside the base 1, and the heater wire 12 is electrically connected to the contact switch 13, and the contact switch 13 can control the on/off of the heater wire 12.

Fixed connection can be dismantled with the outward flange department of base 1 to shell 2, and wherein can dismantle fixed connection and include but not limited to grafting, joint, cup joint and threaded connection, and is specific, in this embodiment, shell 2 adopts flexible shell 2, and is preferred, and silica gel shell 2 is chooseed for use to flexible shell 2. The shaping of the bottom edge of silica gel shell 2 has the step to block the platform, and likewise, the shaping of the outer edge in base 1 bottom has the step card platform with 2 bottom step card platform looks adaptations of silica gel shell. Simultaneously, for the convenience of the user takes the hot hand warmer that discharges, the shaping has non-slip texture on the outer wall of silica gel shell 2.

Referring to fig. 2, the heating liquid 3 is located between the housing 2 and the base 1, the heating liquid 3 is harmless and can be vaporized at a certain temperature, and the boiling point of the heating liquid 3 is low, so that the heating line 12 can heat the heating liquid 3 conveniently. Preferably, the heating liquid 3 is selected from water, and the bottom of the base 1 is formed with a water injection port for injecting water between the housing 2 and the base 1, so that the silicone housing 2 and the base 1 are hermetically connected in order to avoid water flowing out from between the housing 2 and the base 1.

The elastic sheet 4 is made of elastic materials, the elastic sheet 4 is fixedly installed on the base 1, the elastic sheet 4 covers the contact switch 13, and after the deformation of the elastic sheet 4 reaches a certain degree, the elastic sheet 4 can extrude the top of the contact switch 13 to control the contact switch 13.

Referring to fig. 2 and 3, when the heating liquid 3 is injected between the housing 2 and the base 1, when the electric hand warmer is placed on the charging stand 100, the heating liquid 3 needs to flow over the heating wire 12, that is, when the electric hand warmer is charged and heated, the heating wire 12 needs to be located in the heating liquid 3, so that the heating wire 12 heats the heating liquid 3.

When the electric hand warmer is used, in the charging process, the heating wire 12 heats the heating liquid 3, the heating liquid 3 is gradually vaporized, so that the gas between the shell 2 and the heating liquid 3 is continuously increased, the pressure intensity is gradually increased, the pressure of the gas on the heating liquid 3 is also increased, the pressure of the heating liquid 3 on the elastic sheet 4 is also gradually increased, the deformation amount of the elastic sheet 4 is increased, the elastic sheet 4 extrudes to the top of the contact switch 13 after the deformation amount of the elastic sheet 4 reaches a certain degree, the heating wire 12 is disconnected, the heating wire 12 does not heat the heating liquid 3 any more, and the risk that the hand warmer has safety problems in the charging and heating process is reduced.

Further, refer to fig. 3, warm hand treasured of better protection electric heat in the warm hand treasured charging process of electric heat, still be connected with control by temperature change protection device 5 on the heater wire 12, control by temperature change protection device 5 optional temperature controller, control by temperature change protection device 5 is detecting that the heating fluid 3 reaches certain temperature after, control by temperature change protection device 5 automatic power-off, makes heater wire 12 no longer heat the heating fluid 3.

Further, referring to fig. 3, in the charging process of the electric heating hand warmer, in order to avoid safety accidents such as explosion of the electric heating hand warmer, the fuse 6 is electrically connected to the heating wire 12, and when the temperature of the fuse 6 on the heating wire 12 is too high, the fuse 6 is damaged to disconnect the heating wire 12.

Further, referring to fig. 4, in order to better seal between the heating wire 12 and the base 1, the heating wire 12 is electrically connected to the charging port 11 after passing through the base 1, a threading hole 14 is formed in the base 1, the heating wire 12 passes through the threading hole 14, the threading hole 14 is in a horn shape from the inside to the outside of the base 1, and a thickened portion may be provided in the heating wire 12, so that after the heating wire 12 passes through the threading hole 14, and the heating wire 12 reaches the thickened portion, the thickened portion may abut against the inner wall of the horn shape to achieve sealing.

Further, referring to fig. 3 and 4, in order to better bind the heating wire 12 to the susceptor 1, the heating wire 12 is wound on the outer wall of the susceptor 1, and a pressing plate 7 is provided on the top of the susceptor 1, an edge of the pressing plate 7 protrudes out of the top of the susceptor 1, and the pressing plate 7 is located right above the heating wire 12, and the pressing plate 7 presses the heating wire 12 between the top and the bottom of the susceptor 1.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an electric heat hand warmer which characterized in that includes:

the shell is arranged on the base and is in sealing connection with the base;

wherein the heater wire is positioned in the heated liquid when energized.

2. The electric heating hand warmer of claim 1, wherein the housing is a flexible housing.

3. The electric heating hand warmer of claim 2, wherein the flexible casing is a silica gel casing.

4. The electric heating hand warmer of claim 1, wherein the heating wire is further electrically connected with a temperature control protection device.

5. The electric heating hand warmer of claim 1 or 4, wherein a fuse is electrically connected to the heating wire.

6. The electric heating hand warmer according to claim 1, wherein the charging interface is located at the bottom of the outer side of the base, the heating wire is located between the base and the shell, the heating wire penetrates through the base to be electrically connected with the charging interface, a threading hole is formed in the base, the threading hole is in a bell mouth shape, and the bell mouth is sealed by the outer portion of the heating wire.

7. The electric heating hand warmer of claim 1, wherein the heating wire is wound on a base, a pressing plate is arranged on the top of the base, and the edge of the pressing plate is located right above the heating wire and used for preventing the heating wire from falling off the base.

8. The electric heating hand warmer according to claim 3, wherein the outer wall of the silica gel shell is provided with anti-skid lines.