Safety switch for gas burners

Abstract

The present application provides a safety switch for a gas burner, which is used for being installed on a gas burner with a rear opening, and the rear opening is adjacent to a button; the safety switch comprises a locking member and a swing arm which is adjacent to the locking member and is pivoted to an inner wall of the gas burner, the locking member has a body which is sleeved with a longitudinal spring, and a locking hook protrudes from the body towards a hook position above the swing arm, wherein an extension piece below the swing arm is provided with a transverse spring between the extension piece and the inner wall of the gas burner; when the locking member is not pressed, the locking hook is abutted to the hook, and a locking bolt protruding from the bottom of the button is abutted to the locking hook, so that the button forms a locked state which cannot be pressed.

Description

Technical Field

[0001] This invention relates to a safety switch, and more particularly to a safety switch for a gas burner. The safety switch is locked when not in operation, and can be pressed to supply gas and ignite when unlocked. Background Technology

[0002] With the changing times, lighters have replaced matches as the main fire-starting device. Currently, gas burners are widely used and loved because they have the advantages of strong flames, can be held and operated with one hand, and are easy to carry.

[0003] Due to the widespread availability of gas burners, children, driven by their tendency to imitate and curiosity, often play with them without permission. This can easily lead to fires, endangering lives and property. Therefore, countless fires are caused by children playing with fire. The ease of use of the ignition switch on common gas burners makes them a convenient tool for children, leading to unpredictable consequences.

[0004] For safety reasons, governments around the world have formulated relevant safety regulations for gas burners and mandated that all gas burners be equipped with safety switches. Notable examples include U.S. Patent Nos. 6,293,782 (corresponding to Taiwan Patent Publication No. 446104), 6,296,476 (corresponding to Taiwan Patent Publication No. 449018), 6,527,543 (corresponding to Taiwan Patent Publication No. 525749), 7,708,554 (corresponding to Taiwan Patent Publication No. M306647), and 7,850,446 (corresponding to Taiwan Patent Publication No. M338954), all owned by the applicant of this invention. When the gas burner is not in use, the aforementioned safety switch is locked; when in use, the safety switch must be released before pressing to supply gas and ignite the burner. Because the release mechanism of this safety switch increases the difficulty of operation, it prevents children from unlocking the switch while playing with it, thus reducing the risk of accidents.

[0005] Therefore, adding safety switches to gas burners to comply with the relevant safety regulations of various countries is a common challenge faced by those skilled in the art. Summary of the Invention

[0006] The main objective of this invention is to provide a safety switch for a gas burner, which has the functions of manual unlocking and automatic locking, so as to increase the safety during operation and the durability in use.

[0007] To achieve the aforementioned objective, the present invention provides a safety switch for a gas burner, which is mounted on a gas burner having a rear opening adjacent to a button. The safety switch includes a locking member and a swing arm disposed adjacent to the locking member and pivotally connected to an inner wall of the gas burner. The locking member has a body fitted with a longitudinal spring, and the body has a pressure button extending from the rear opening and a locking hook protruding toward a hook position above the swing arm. An extension piece below the swing arm is connected to the gas burner. A transverse spring is provided between the inner walls of the device; when the key is not pressed, the locking hook abuts against the latch, and a bolt protruding from the bottom of the key abuts against the locking hook, so that the key is in a locked state that cannot be pressed; when the key is pressed vertically downward to compress the vertical spring, and the locking hook of the body moves down along the latch to abut against each other, so that the bolt loses the abutment of the locking member to form an unlocked state that can be pressed, and causes the latch to disengage from the locking hook, and the locking member moves upward due to the release of the vertical spring, and the top surface of the locking hook touches the bolt.

[0008] In one embodiment, the upper end of the longitudinal spring is fitted into a spring groove at the bottom of the body, while the lower end abuts against a stop piece below the rear opening.

[0009] In one embodiment, at least one side wall of the body is provided with a slide rail mechanism opposite to an adjacent inner wall of the gas burner.

[0010] In one embodiment, the slide rail mechanism includes at least one convex rail and at least one slide rail for mounting the at least one convex rail, so that the locking member can use the slide rail mechanism to move longitudinally elastically within the rear opening.

[0011] In one embodiment, the swing arm has a shaft hole that fits onto a shaft post protruding from the inner wall of the gas burner.

[0012] In one embodiment, one end of the transverse spring is fitted onto a tenon of the extension piece, while the other end abuts against the inner wall of the gas burner. Attached Figure Description

[0013] To further disclose the specific technical content of the present invention, please first refer to the figures, in which:

[0014] Figure 1 and Figure 2 This is an exploded perspective view of the safety switch and gas burner of the present invention from two different angles;

[0015] Figure 3 This is a perspective view of the safety switch of the present invention installed in a gas burner;

[0016] Figure 4 for Figure 3 A partial cross-sectional view taken along line AA;

[0017] Figure 5 for Figure 3 A cross-sectional view taken along line BB;

[0018] Figure 6 for Figure 3 A cross-sectional view taken along line CC;

[0019] Figures 7 to 8 A cross-sectional view showing the unlocking process of the safety switch of the present invention;

[0020] Figure 9 This is a cross-sectional view showing the movement of the swing arm after the safety switch of the present invention is unlocked and the button is pressed; and

[0021] Figure 10 The diagram shows a cross-sectional view of the gas supply after the safety switch of the present invention is unlocked and the button is pressed.

[0022] Explanation of reference numerals in the attached figures

[0023] Safety switch 1

[0024] Locking component 11

[0025] Ontology 111

[0026] Longitudinal spring 112

[0027] convex rail 113

[0028] Key press 114

[0029] 115 Lock Hook

[0030] Spring groove 116

[0031] Swing arm 12

[0032] Hook 121

[0033] Shaft hole 122

[0034] Extension film 123

[0035] Horizontal spring 124

[0036] Spring tenon 125

[0037] Gas burner 2

[0038] Button 21

[0039] Bolt 211

[0040] Putter 212

[0041] Push arm 213

[0042] Piezoelectric 214

[0043] Spring rod 215

[0044] Auxiliary spring 216

[0045] Rear opening 22

[0046] 221 pieces of film

[0047] Slide rail 222

[0048] 223 shaft column

[0049] Support shaft 224

[0050] Storage cylinder 23

[0051] Gas control device 24

[0052] Vent 241

[0053] Gas Pipeline 242

[0054] Air pressure plate 243

[0055] Combustion device 25 Detailed Implementation

[0056] like Figures 1 to 6 As shown, basically, the safety switch 1 of the present invention is installed on a gas burner 2 so as to lock a button 21 on the gas burner 2 to prevent children from misusing it.

[0057] The safety switch 1 is fitted inside a rear opening 22 of the gas burner 2 and is located below the button 21. The safety switch 1 includes a locking member 11 and a swing arm 12 disposed adjacent to the locking member 11.

[0058] The locking member 11 has a body 111, and a longitudinal spring 112 is fitted at the bottom of the body 111. The lower end of the longitudinal spring 112 abuts against a stop piece 221 below the rear opening 22, allowing the locking member 11 to move longitudinally elastically within the rear opening 22. At least one side wall of the body 111 is provided with a slide rail mechanism opposite to the adjacent inner wall of the gas burner 2, such as at least one convex rail 113 and at least one slide rail 222 for fitting the at least one convex rail 113, allowing the locking member 11 to move longitudinally elastically within the rear opening 22 using the slide rail mechanism.

[0059] Furthermore, the body 111 has a key 114 extending from the rear opening 22, and a locking hook 115 protruding toward a latch 121 above the swing arm 12. (See also...) Figure 5When the locking member 11 is not pressed down, the locking hook 115 abuts against the latch 121 of the swing arm 12. The upper end of the longitudinal spring 112 is fitted into a spring groove 116 at the bottom of the body 111, while the lower end abuts against the abutment piece 221. A bolt 211 protruding from the bottom of the button 21 abuts against the locking hook 115, preventing the button 21 from being pressed and thus locking it in place.

[0060] The rocker arm 12 has a shaft hole 122, which is fitted onto a shaft post 223 protruding from the inner wall of the gas burner 2. A transverse spring 124 is provided between an extension piece 123 below the shaft hole 122 and the inner wall of the gas burner 2. When the button 21 is in the position... Figure 5 During the automatic locking state shown, the swing arm 12 rotates counterclockwise under the release of energy from the transverse spring 124, and the latch 121 abuts against the locking hook 115. One end of the transverse spring 124 is fitted into a tenon 125 of the extension piece 123, while the other end abuts against the inner wall of the gas burner 2.

[0061] Based on the foregoing description, the locking member 11 and the swing arm 12 are installed in the rear opening 22 of the gas burner 2, thus forming as follows: Figures 1 to 3 The safety switch 1 shown is illustrated, and a cross-section of the assembled safety switch 1 is shown in [the diagram / image]. Figures 4 to 6 The manual unlocking and automatic locking operations of the safety switch 1 and the button 21 will be described later.

[0062] The gas burner 2 has a storage tank 23, commonly used for storing liquid gas. A gas control device 24 is located at the top of the storage tank 23. This device has a gas outlet 241 for controlling the gas supply and demand. The outlet 241 is connected to one end of a gas supply pipe 242, and the other end of the pipe is connected to a jet nozzle (commonly not shown). When the outlet 241 is pulled up, the liquid gas in the storage tank 23 is vaporized, allowing the gas to enter the gas supply pipe 242 through the outlet 241 and be rapidly ejected from the jet nozzle, thus entering a combustion device 25 for combustion.

[0063] The gas control device 24 further includes a gas outlet pressure plate 243, which is pivotally connected to a shaft 224 inside the gas burner 2. One end of the gas outlet pressure plate 243 is sleeved on the gas outlet nozzle 241, and the other end is adjacent to a push rod 212 of the button 21 (displayed on...). Figure 2 and Figure 6When the gas pressure plate 243 is pushed by the push rod 212 of the button 21, a torque is applied to pull up the gas outlet 241, thus forming a gas supply state. The gas then passes through the gas pipe 242 and is ejected from the nozzle to enter the combustion device 25. Furthermore, the button 21 extends a push arm 213 above the upper part of the swing arm 12 to push the swing arm 12 and rotate it.

[0064] A pressure device 214 is housed inside the button 21, and the pressure device 214 has a conductive wire (common but not shown) extending to the combustion device 25.

[0065] The spring rod 215 of the button 21 is further sleeved with an auxiliary spring 216. The two ends of the auxiliary spring 216 are respectively adjacent to the spring rod 215 of the button 21 and the inner wall of the gas burner 2 to assist the button 21 in elastically returning to the initial position.

[0066] Based on the foregoing description of each component, the three-dimensional state of the assembled gas burner 2 is as follows: Figure 3 As shown, and Figures 4 to 6 Then display along Figure 3 Cross-sectional views taken by lines AA, BB, and CC.

[0067] Please refer to the following: Figure 5 When the button 21 and the safety switch 1 are not operated, the locking hook 115 is adjacent to the latch 121, and the bolt 211 abuts against the locking member 11, forming a locked state that cannot be pressed. At this time, both the longitudinal spring 112 and the transverse spring 124 are in the extended (released) state.

[0068] Please see Figures 7 to 8 The diagram shows a cross-sectional view of the unlocking process of the locking member 11 of the safety switch 1. To unlock, the user presses down the key 114 of the locking member 11 longitudinally using the slide rail mechanism to compress the longitudinal spring 112, and causes the locking hook 115 above the body 111 to move down along the latch 121 of the swing arm 12 to abut, so that the bolt 211 loses the abutting effect of the locking member 11 and forms an unlocked state that can be pressed.

[0069] like Figure 9 and Figure 10 As shown, the user can press button 21 to compress the pressure cell 214 and the auxiliary spring 216, and simultaneously push the swing arm 12 and the air pressure plate 243, so that the transverse spring 124 is compressed (energy stored, such as...) Figure 9(As shown) In this state, the hook 121 disengages from the locking hook 115, causing the locking member 11 to move upward via the slide rail mechanism due to the release of energy from the longitudinal spring 112, and its top surface contacts the locking bolt 211; and the gas outlet pressure plate 243 rotates clockwise to pull up the gas outlet 241, thereby establishing a gas supply state (as shown). Figure 10 As shown), the gas is supplied to the nozzle as described above and then ejected, and is immediately ignited by the electric arc generated by the conductive wire of the piezoelectric device 214 and the nozzle.

[0070] When the burning operation is complete, the user stops pressing the button 21, causing the button 21 to move backward due to the release of energy from the pressure device 214 and the auxiliary spring 216. Simultaneously, the gas pressure plate 243, having lost the support of the button 21 and the release of energy from the gas nozzle 241, returns to its original position, cutting off the gas supply and extinguishing the flame of the burner. The bolt 211 also moves backward along the top surface of the locking member 11. As the bolt 211 moves behind the locking hook 115 and forms contact, the swing arm 12 rotates clockwise due to the release of energy from the transverse spring 124, causing the hook 121 to move along the locking hook 115 until a contact is formed. Figure 5 The automatic locking status is shown.

[0071] Therefore, the benefits gained from the implementation of this invention are that the safety switch, after integration, has the dual functions of manual unlocking and automatic locking, thereby increasing the safety during operation and the durability of use. Since the manual unlocking process is quite cumbersome and difficult, it can indeed avoid unpredictable disasters that may be caused by children playing with it, and thus meet the safety regulations of European and American countries. It is a structure that has never been seen before in similar products.

[0072] The content disclosed in this invention is only one of the preferred embodiments of this invention. Any changes or equivalent substitutions that can be easily made by those skilled in the art are within the protection scope of this invention. The scope of protection of this invention should be determined by the claims.

Claims

1. A safety switch for a gas burner, for mounting on a gas burner having a rear opening, wherein the rear opening is adjacent to a button; characterized in that, The safety switch includes a locking element and a swing arm adjacent to the locking element and pivotally connected to an inner wall of the gas burner. The locking element has a body fitted with a longitudinal spring, a key extending from a rear opening, and a locking hook protruding towards a latch above the swing arm. A transverse spring is provided between an extension plate below the swing arm and the inner wall of the gas burner. When the key is not pressed, the locking hook abuts against the latch. The locking hook of the body is located between the latch of the swing arm and a push arm of the key, and a locking bolt protruding from the bottom of the key abuts against the locking hook, causing the key to... It forms a locked state that cannot be pressed; when the key is pressed down vertically, the vertical spring is compressed and the locking hook of the body moves down along the latch, so that the top of the latch and the bottom of the locking hook form a mutual abutting state. At this time, the locking hook of the body separates from the bolt and the push arm of the key, so that the bolt loses the abutting of the locking member and forms an unlocked state that can be pressed; when the key is pressed and moves horizontally, the push arm of the key pushes the latch, so that the latch pivots and disengages from the locking hook, and the locking member moves up due to the release of the vertical spring, and the top surface of the locking hook touches the bolt.

2. The safety switch for a gas burner according to claim 1, characterized in that, The upper end of the longitudinal spring is fitted into a spring groove at the bottom of the body, while the lower end abuts against a stop plate below the rear opening.

3. The safety switch for a gas burner according to claim 1, characterized in that, At least one side wall of the body is provided with a slide rail mechanism opposite to the adjacent inner wall of the gas burner.

4. The safety switch for a gas burner according to claim 3, characterized in that, The slide rail mechanism includes at least one convex rail and at least one slide rail for mounting the at least one convex rail, so that the locking member can use the slide rail mechanism to move longitudinally elastically within the rear opening.

5. The safety switch for a gas burner according to claim 1, characterized in that, The swing arm has a shaft hole, which is fitted onto a shaft post protruding from the inner wall of the gas burner.

6. The safety switch for a gas burner according to claim 1, characterized in that, One end of the transverse spring is fitted into a tenon of the extension piece, while the other end abuts against the inner wall of the gas burner.

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