TW202033913A - Ignition device - Google Patents

Abstract

An ignition device including a cover, a battery housing and an ignition portion is provided. A conductive layer is disposed on an inner surface of the cover. The battery housing is configured to mount a battery, and has a first electrode, a second electrode, a first conductive contact, and a second conductive contact. The first electrode and the second electrode are respectively electrically connected to a positive electrode and a negative electrode of the battery. The first conductive contact and the second conductive contact are disposed on an outer surface of a first end of the battery housing. The second electrode is electrically connected to the second conductive contact. The ignition portion is disposed at a second end of the battery housing and includes an electric heating element. A first end of the electric heating element is electrically connected to the first electrode. A second end of the electric heating element is electrically connected to the first conductive contact. When the cover is join to the first end of the battery housing, the first conductive contact is electrically connected to the second conductive contact through the conductive layer, so that the electric heating element is energized and heated.

Description

Ignition device

The invention relates to an ignition device, especially a high-safety ignition device.

Most of the current ignition devices use a flip cover method, a slide cover method, or a method of pressing a button for ignition. However, the above ignition design is not safe, because the ignition device is easily hit by external force or squeezed to ignite, resulting in accidents.

In view of this, the present invention provides an ignition device that can prevent the ignition device from being ignited by an external force, so as to improve the safety of the ignition device.

The ignition device of the present invention includes a cover, a battery accommodating part and an ignition part. The inner surface of the cover has a conductive layer. The battery accommodating part is used to house the battery. The battery accommodating part has a first electrode, a second electrode, a first conductive contact, and a second conductive contact. The first electrode and the second electrode are respectively used to electrically connect the positive electrode and the negative electrode of the battery. The first conductive contact and the second conductive contact are arranged on the outer surface of the first end of the battery containing portion. The second electrode is electrically connected to the second conductive contact. The first end of the battery accommodating part is used to sleeve the cover. The ignition part is arranged at the second end of the battery accommodating part and includes an electric heating element. The first end of the electric heating element is electrically connected to the first electrode. The second end of the electric heating element is electrically connected to the first conductive contact. When the cover is sleeved on the first end of the battery accommodating part, the conductive layer electrically connects the first conductive contact to the second conductive contact, so that the electric heating element is energized and generates heat.

In an embodiment of the present invention, when the cover is not sleeved with the first end of the battery receiving portion or the cover is sleeved with the ignition portion, the first conductive contact and the second conductive contact are electrically insulated from each other, As a result, the heating element is not energized and generates heat.

In an embodiment of the present invention, the ignition part further includes an over-temperature protection element. The over-temperature protection element is coupled between the first end of the electric heating element and the first electrode for over-temperature protection of the electric heating element.

In an embodiment of the present invention, the ignition part further includes a ceramic shell. The ceramic shell is connected to the second end of the battery containing portion and has an open end. The electric heating element is contained in the ceramic shell and is adjacent to the open end.

In an embodiment of the present invention, the ignition device further includes an insulating outer shell. The insulating outer shell is used to cover the battery accommodating part. There are gaps between the first conductive contact point and the second conductive contact point and the insulating outer shell for sheathing the cover.

In an embodiment of the present invention, the aforementioned conductive layer is a U-shaped conductive sheet or a conductive ring.

Based on the foregoing, in the ignition device proposed by the embodiment of the present invention, the cover body must be sleeved on the first end of the battery accommodating part, so that the first conductive contact is electrically connected to the second conductive contact, so that the electric heating element It is energized to generate heat to achieve the purpose of ignition. Therefore, compared with the current ignition device that uses a flip lid method, a sliding lid method, or a method of pressing a button to ignite, the ignition device of the embodiment of the present invention will not be ignited by external force collision or compression, which greatly improves the performance of the ignition device. safety.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Fig. 1 is a schematic cross-sectional view of an ignition device according to an embodiment of the present invention. Please refer to FIG. 1, the overall appearance of the ignition device 100 may be, for example, a cylindrical shape or a square column shape, but is not limited thereto. The ignition device 100 may include a cover 120, a battery receiving portion 142 and an ignition portion 144. The cover 120 has an open end 121, and the inner surface of the cover 120 has a conductive layer 122. The battery accommodating portion 142 is used for accommodating a battery 1421. The battery accommodating portion 142 has a first electrode EN1, a second electrode EN2, a first conductive contact EP1, and a second conductive contact EP2. The first electrode EN1 and the second electrode EN2 are used to electrically connect the positive electrode and the negative electrode of the battery 1421, respectively. The first conductive contact EP1 and the second conductive contact EP2 are disposed on the outer surface of the first end T1 of the battery accommodating portion 142, wherein the first end T1 of the battery accommodating portion 142 is used to sleeve the cover 120. The first conductive contact EP1 and the second conductive contact EP2 are electrically insulated from each other. In addition, the second electrode EN2 is electrically connected to the second conductive contact EP2.

The ignition part 144 is disposed at the second end T2 (opposite to the first end T1) of the battery receiving part 142. The ignition part 144 includes an electric heating element 1442, but is not limited thereto. The first end H1 of the heating element 1442 is electrically connected to the first electrode EN1, and the second end H2 of the heating element 1442 is electrically connected to the first conductive contact EP1 through the conductive wire 1441.

Fig. 2 is a schematic diagram of an application scenario of an ignition device according to an embodiment of the present invention. 2, when the open end 121 of the cover 120 is sleeved on the first end T1 of the battery accommodating portion 142, the first conductive contact EP1 can be electrically connected to the conductive layer 122 on the inner surface of the cover 120 The second conductive contact EP2. In this way, the heating element 1442, the conductive wire 1441, the first conductive contact EP1, the conductive layer 122, the second conductive contact EP2, the second electrode EN2, the battery 1421, and the first electrode EN1 will form a closed loop to generate current. , Causing the electric heating element 1442 to energize and generate heat to achieve the purpose of ignition.

On the other hand, when the opening 121 of the cover 120 is not sleeved on the first end T1 of the battery receiving portion 142 (as shown in FIG. 1), or when the cover 120 is sleeved on the ignition portion 144, Since the first conductive contact EP1 and the second conductive contact EP2 are electrically insulated from each other, the first end H1 and the second end H2 of the electric heating element 1442 are disconnected and no current flows. Therefore, the electric heating element 1442 does not fever.

It is understandable that the cover 120 must be sleeved on the first end T1 of the battery accommodating portion 142 so that the first conductive contact EP1 is electrically connected to the second conductive contact EP2, so that the heating element 1442 can be energized and heated. Therefore, compared with the current ignition device that uses a flip-top method, a sliding-type method, or a method of pressing a button to ignite, the ignition device 100 proposed in this embodiment will not be ignited by external force (such as collision or squeeze). The safety of the ignition device 100 is greatly improved.

In an embodiment of the present invention, the heating element 1442 can be, for example, a heating wire, and the shape of the heating wire can be, for example, a spiral shape, but the invention is not limited thereto.

In an embodiment of the present invention, the ignition part 144 may further include a ceramic shell 1444. The ceramic shell 1444 is connected to the second end T2 of the battery receiving portion 142. The ceramic housing 1444 has an open end 1445. The electric heating element 1442 is contained in the ceramic casing 1444 and is adjacent to the open end 1445. The ceramic shell 1444 has a thermal protection function, which can prevent the user from accidentally touching the heating element 1442 and being burned.

In an embodiment of the present invention, the ignition device 100 may further include an insulating outer shell 146. The insulating housing 146 is used to cover the battery accommodating portion 142 and part of the conductive wires 1441, wherein the first conductive contact EP1 and the second conductive contact EP2 (located on the outer surface of the first end T1 of the battery accommodating portion 142) There is a gap between) and the insulating housing 146. Therefore, the cover 120 can be sleeved in this gap. In other words, by inserting the open end 121 of the cover 120 into the gap, the open end 121 of the cover 120 can be stably sleeved on the first end T1 of the battery receiving portion 142. In addition, the user only needs to remove the insulating outer shell 146 covering the outer surface of the battery accommodating portion 142 to replace the battery 1421 in the battery accommodating portion 142.

In an embodiment of the present invention, the conductive layer 122 on the inner surface of the cover 120 may be, for example, a U-shaped conductive sheet or a conductive ring, and the outer surface of the cover 120 may be, for example, an insulator, but the present invention is not limited thereto.

3 is a schematic cross-sectional view of an ignition device according to another embodiment of the invention. Please refer to Figure 1 and Figure 3 together. The ignition device 100' of FIG. 3 is similar to the ignition device 100 of FIG. 1, and the difference between the two is only that the ignition portion 144' of the ignition device 100' also includes an over-temperature protection element 1443. The over-temperature protection element 1443 is coupled between the first end H1 of the electric heating element 1442 and the first electrode EN1 for over-temperature protection of the electric heating element 1442.

Furthermore, when the heating element 1442 is energized to generate heat, when the temperature value of the heating element 1442 is greater than or equal to a critical value, the over-temperature protection element 1443 can respond to the high temperature and disconnect the first end H1 of the heating element 1442 The current path between the first electrode EN1 and the first electrode EN1, so that the heating element 1442 is powered off and cooled. In contrast, when the temperature value of the heating element 1442 is less than the above-mentioned critical value, the over-temperature protection element 1443 can conduct the current path between the first end H1 of the heating element 1442 and the first electrode EN1, so that the heating element 1442 is energized and generates heat.

In an embodiment of the present invention, the over-temperature protection element 1443 may be implemented by a thermistor with a positive temperature coefficient (PTC) characteristic, but the present invention is not limited to this.

In addition, for other implementation details and operations of the ignition device 100' of FIG. 3, reference may be made to the related descriptions of FIGS. 1 and 2, which will not be repeated here.

To sum up, in the ignition device proposed in the embodiment of the present invention, the cover body must be sleeved on the first end of the battery accommodating part, so that the first conductive contact is electrically connected to the second conductive contact. The electric heating element is energized and generates heat to achieve the purpose of ignition. Therefore, compared with the current ignition device that uses a flip lid method, a sliding lid method, or a method of pressing a button to ignite, the ignition device of the embodiment of the present invention will not be ignited by external force collision or compression, which greatly improves the performance of the ignition device. safety.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

100, 100’: Ignition device 120: Lid 121: open end 122: conductive layer 142: battery accommodating part 1421: battery 144, 144’: Ignition Department 1441: conductive thread 1442: electric heating element 1443: Over temperature protection element 1444: ceramic shell 1445: open end 146: insulated housing EN1: first electrode EN2: second electrode EP1: The first conductive contact EP2: second conductive contact H1: The first end of the heating element H2: The second end of the heating element T1: The first end of the battery housing part T2: The second end of the battery housing part

Fig. 1 is a schematic cross-sectional view of an ignition device according to an embodiment of the present invention. Fig. 2 is a schematic diagram of an application scenario of an ignition device according to an embodiment of the present invention. 3 is a schematic cross-sectional view of an ignition device according to another embodiment of the invention.

100: Ignition device

120: Lid

121: open end

122: conductive layer

142: battery accommodating part

1421: battery

144: Ignition Department

1441: conductive thread

1442: electric heating element

1444: ceramic shell

1445: open end

146: insulated housing

EN1: first electrode

EN2: second electrode

EP1: The first conductive contact

EP2: second conductive contact

H1: The first end of the heating element

H2: The second end of the heating element

T1: The first end of the battery housing part

T2: The second end of the battery housing part

Claims (10)

An ignition device including: A cover, the inner surface of the cover has a conductive layer; A battery accommodating portion for accommodating a battery, the battery accommodating portion having a first electrode, a second electrode, a first conductive contact and a second conductive contact, the first electrode and the first electrode The two electrodes are respectively used to electrically connect the positive electrode and the negative electrode of the battery. The first conductive contact and the second conductive contact are arranged on the outer surface of a first end of the battery accommodating part, and the second electrode is electrically connected. Sexually connected to the second conductive contact, and the first end of the battery accommodating portion is used to sleeve the cover; and An ignition part is arranged at a second end of the battery containing part and includes an electric heating element. The first end of the electric heating element is electrically connected to the first electrode, and the second end of the electric heating element is electrically connected to the The first conductive contact, when the cover is sleeved on the first end of the battery accommodating portion, the conductive layer makes the first conductive contact electrically connect to the second conductive contact, so that the electric heating element is energized and generates heat . The ignition device described in item 1 of the scope of patent application, wherein when the cover is not sleeved with the first end of the battery accommodating portion or the cover is sleeved with the ignition portion, the first conductive contact The second conductive contact is electrically insulated from each other, so that the electric heating element is not energized to generate heat. As the ignition device described in item 1 of the scope of patent application, the ignition part further includes: An over-temperature protection element is coupled between the first end of the electric heating element and the first electrode for over-temperature protection of the electric heating element. The ignition device as described in item 3 of the scope of patent application, in which: When the temperature value of the electric heating element is greater than or equal to a critical value, the over-temperature protection element disconnects the current path between the first end of the electric heating element and the first electrode; and When the temperature value of the electric heating element is less than the critical value, the over-temperature protection element conducts a current path between the first end of the electric heating element and the first electrode. In the ignition device described in item 1 of the scope of patent application, the electric heating element is a heating wire. The ignition device as described in item 5 of the scope of patent application, wherein the heating wire has a spiral shape. As the ignition device described in item 1 of the scope of patent application, the ignition part further includes: A ceramic shell is connected to the second end of the battery containing portion and has an open end, wherein the electric heating element is contained in the ceramic shell and is adjacent to the open end. The ignition device described in item 1 of the scope of patent application further includes: An insulating outer casing is used to cover the battery accommodating portion, wherein a gap is formed between the first conductive contact and the second conductive contact and the insulating outer casing to sleeve the cover. In the ignition device described in item 1 of the scope of patent application, the conductive layer is a U-shaped conductive sheet or a conductive ring. The ignition device as described in item 1 of the scope of patent application, wherein the outer surface of the cover is an insulator.

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