Electric arc ignition gun

Abstract

The utility model belongs to the field of handheld ignition devices, and particularly relates to an electric arc ignition gun which comprises a shell, a middle frame located in the shell, an ignition head connected to one end of the middle frame and an electric arc ignition assembly arranged in the ignition head. The two connecting plates are located on the two sides of the ignition head correspondingly, and buckle fit connecting structures are formed between the two connecting plates and the ignition head correspondingly. During installation, the ignition head and the middle frame are directly clamped to keep stable connection, then the ignition head and the middle frame are installed in the shell, assembly is simple, and the structure is compact.

Description

Technical Field

[0001] The utility model belongs to the field of handheld ignition devices, in particular to an arc ignition gun. Background Art

[0002] An ignition gun generally includes a shell, a middle frame located in the shell, an ignition head connected to one end of the middle frame, and an arc ignition assembly arranged in the ignition head. At present, the installation of the ignition head is usually connected by two fixing pins. Due to the small size of the fixing pins, the manual assembly efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to provide an arc ignition gun in order to overcome the shortcomings and deficiencies of the prior art.

[0004] The technical solution adopted by the utility model is as follows: an arc ignition gun, comprising a shell, a middle frame located in the shell, an ignition head connected to one end of the middle frame, and an arc ignition assembly arranged in the ignition head, one end of the middle frame is provided with two oppositely arranged connecting plates, the two connecting plates are respectively located on both sides of the ignition head and form a snap-fit ​​connection structure with the ignition head.

[0005] The ignition head side wall is provided with a raised hook claw, and the connecting plate is correspondingly provided with a slot, and the hook claw extends into the slot to form a snap-fit ​​connection structure between the connecting plate and the ignition head side wall.

[0006] The connecting plate is integrally formed on the middle frame and is arranged to protrude relative to the middle frame. The shell cover is arranged outside the connecting plate to limit it, so that the connecting plate and the ignition head maintain a snap connection.

[0007] The width of the connecting plate is smaller than that of the ignition head. A limiting groove matching the shape of the connecting plate is provided on the side wall of the ignition head. The connecting plate is located in the limiting groove. The shell at least covers the outer periphery of the portion where the ignition head and the connecting plate are connected.

[0008] The arc ignition assembly includes an insulating seat, in which at least one group of through holes for the arc lead to pass through is provided, the ignition head sleeve is arranged outside the insulating seat and forms an upper end limit for the insulating seat, and a support frame is provided on the middle frame, and the support frame forms a lower end limit for the insulating seat.

[0009] A positioning protrusion is formed at the upper end of the support frame, and a positioning groove which is plug-fitted with the positioning protrusion is formed at the bottom of the insulating seat.

[0010] The support frame includes a bottom connecting rod, an intermediate column connected to the upper end of the bottom connecting rod, and a side plate connected to the upper end of the bottom connecting rod and on the side of the intermediate column. One end of the middle frame forms an annular frame. The two ends of the bottom connecting rod are fixedly connected to the inner wall of the annular frame, and through holes for the power arc lead to pass through are formed between the two sides of the bottom connecting rod and the annular frame. The upper end of the intermediate column is raised relative to the upper end of the side plate to form a positioning protrusion at the upper end of the intermediate column. The upper end of the side plate cooperates with the lower end of the insulating seat to form a lower end limit.

[0011] The side plate is arranged on the side of the middle column facing the connecting plate, and a gap for the ignition head to be inserted is formed between the side plate and the connecting plate.

[0012] The upper end of the insulating seat is provided with two raised positioning and mounting feet, and the two positioning and mounting feet are respectively provided with through holes for the arc power supply lead wire to pass through, and the two through holes are arranged oppositely to form an arc generation area between the two positioning and mounting feet;

[0013] The ignition head comprises a foot cover which is arranged on the outer side and the upper end of the positioning installation foot.

[0014] The shell is an integrated annular member with openings at both ends, which is sleeved outside the middle frame and the ignition head. An end of the shell away from the ignition head is connected to an end cover and the opening is blocked by the end cover.

[0015] The beneficial effects of the utility model are as follows: when the utility model is installed, the ignition head is directly clamped with the middle frame to maintain a stable connection, and then the ignition head is installed in the shell, which is simple to assemble and compact in structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 This is an exploded view of an embodiment of the utility model;

[0019] Figure 3 This is a partial structural diagram of a middle frame in one embodiment of the utility model;

[0020] Figure 4 It is a partial cross-sectional view at an angle in one embodiment of the utility model;

[0021] Figure 5 It is a partial cross-sectional view of another angle in one embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of an ignition head in one embodiment of the utility model;

[0023] Figure 7 This is a structural schematic diagram of an insulating seat in an embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the connection structure of the middle frame, the ignition head and the insulating seat in one embodiment of the utility model;

[0025] Fig. 9 A partial cross-sectional view of an embodiment of the utility model;

[0026] In the figure, shell 1, middle frame 2, connecting plate 201, slot 202, bottom connecting rod 2031, middle column 2032, side plate 2033, positioning protrusion 204, through hole 205, annular frame 206, gap 207, ignition head 3, hook 301, limiting groove 302, foot cover 303, insulating seat 4, through hole 401, positioning mounting foot 402, positioning groove 403, end cover 5. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0028] The directions and positions mentioned in the present invention, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only directions or positions with reference to the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0029] An arc ignition gun, such as Figure 1 , Figure 2 As shown, it includes a housing 1, a middle frame 2 located in the housing 1, an ignition head 3 arranged at one end of the housing 1, and an arc ignition assembly arranged in the ignition head 3. One end of the middle frame 2 is provided with two connecting plates 201 arranged opposite to each other. The two connecting plates 201 are respectively located on both sides of the ignition head 3 and form a snap-fit ​​connection structure with the ignition head 3. The snap-fit ​​connection structure refers to a structure in which a hook with a guide surface along the installation direction cooperates with a card slot. In this embodiment, as shown in FIG. Figure 6 As shown, the side wall of the ignition head 3 is provided with a raised hook 301 having a guide surface along the installation direction for easy installation, as shown in FIG. Figure 3-5As shown, the connecting plate 201 is provided with a corresponding slot 202, and the hook 301 extends into the slot 202 so that the connecting plate 201 and the side wall of the ignition head 3 form a snap-fit ​​connection structure. Alternatively, a hook may be provided on the connecting plate 201, and a slot may be formed on the side wall of the ignition head 3. In this way, the two oppositely arranged connecting plates 201 of the middle frame 2 respectively form a snap-fit ​​with the side walls of the ignition head 3, so that the ignition head 3 and the middle frame 2 can maintain a relatively stable connection, and then perform subsequent assembly, which is convenient to assemble and compact in structure.

[0030] like Figure 3 As shown, the connecting plate 201 is integrally formed on the middle frame 2 and is protruded relative to the middle frame 2 , and the housing 1 is disposed outside the connecting plate 201 to limit it, so that the connecting plate 201 and the ignition head 3 maintain a snap connection. The middle frame 2 is formed in one piece by a plastic material, and two relatively arranged connecting plates 201 are arranged to protrude relative to the middle frame 2. When the ignition head 3 is installed and clamped, the connecting plate 201 has a certain elasticity, so the hook claw 301 can be passed over the connecting plate 201 without excessive force and easily installed. At this time, the middle frame 2 and the ignition head 3 can maintain a relatively stable connection without human maintenance, which is convenient for the operation of subsequent assembly processes. However, if the ignition head 3 is only fixed by the connecting plate 201, it is still possible to remove the ignition head 3 when a certain external force pulls the ignition head 3 or an external force swings the connecting plate 201. Therefore, after the shell 1 is further installed, the connecting plate 201 is limited by the shell 1, so that the connecting plate 201 will not be swung, and when a certain external force pulls the ignition head 3, the ignition head 3 will not be easily pulled out and removed.

[0031] The width of the connecting plate 201 is smaller than the width of the ignition head 3. Figure 6 As shown, the side wall of the ignition head 3 is provided with a limiting groove 302 which is adapted to the shape of the connecting plate 201. Figure 8 As shown, the connecting plate 201 is located in the limiting groove 302, and the housing 1 at least covers the outer periphery of the portion where the ignition head 3 is connected to the connecting plate 201. In this way, the connection between the middle frame 2 and the ignition head 3 is more stable.

[0032] The arc ignition assembly comprises an insulating seat 4, wherein the insulating seat 4 is provided with at least one set of through holes 401 through which the arc lead wire can pass. Fig. 9 As shown, the ignition head 3 is sleeved outside the insulating seat 4 and forms an upper end limit for the insulating seat 4. A support frame is provided on the middle frame 2, and the support frame forms a lower end limit for the insulating seat 4.

[0033] A positioning protrusion 204 is formed at the upper end of the support frame, and a positioning groove 403 which is plugged and matched with the positioning protrusion 204 is formed at the bottom of the insulating seat 4 .

[0034] In this embodiment, the position of the insulating seat 4 is fixed and ignition can be performed directly. Specifically, the support frame includes a bottom connecting rod 2031, an intermediate column 2032 connected to the upper end of the bottom connecting rod 2031, and a side plate 2033 connected to the upper end of the bottom connecting rod 2031 and on the side of the intermediate column 2032. One end of the middle frame 2 forms an annular frame 206. The two ends of the bottom connecting rod 2031 are fixedly connected to the inner wall of the annular frame 206, and a through hole 205 for the power arc lead to pass through is formed between the two sides of the bottom connecting rod 2031 and the annular frame 206. The upper end of the intermediate column 2032 is raised relative to the upper end of the side plate 2033 to form a positioning protrusion 204 on the upper end of the intermediate column 2032. The upper end of the side plate 2033 cooperates with the lower end of the insulating seat 4 to form a lower end limit.

[0035] like Figure 4 As shown, the side plate 2033 is arranged on the side of the middle column 2032 facing the connecting plate 201, and a gap 207 for the ignition head 3 to be inserted is formed between the side plate 2033 and the connecting plate 201. Fig. 9 As shown, the side plate 2033 forms a limit for the ignition head 3 inside the ignition head 3, so that the ignition head 3 cannot swing left and right significantly. In this way, during the assembly process, the connecting plate 201 can be protected and the overall structure is compact.

[0036] like Figure 7 As shown, the upper end of the insulating seat 4 is provided with two protruding positioning and mounting feet 402, and the two positioning and mounting feet 402 are respectively provided with through holes 401 for the arc lead wire to pass through, and the two through holes 401 are arranged oppositely to form an arc generation area between the two positioning and mounting feet 402;

[0037] like Figure 6 As shown, the ignition head 3 includes a foot cover 303 which is arranged on the outer side and the upper end of the positioning and mounting foot 402 .

[0038] The shell 1 is an integral annular member with openings at both ends, which is sleeved outside the middle frame 2 and the ignition head 3. The end of the shell 1 away from the ignition head 3 is connected to the end cover 5 and the opening is blocked by the end cover 5.

[0039] When assembling this embodiment, first plug the insulating seat 4 into the support frame, and then install the ignition head 3 to form the following Figure 8 The stable structure shown in the figure is then put on the housing 1, so that the insulating seat 4 and the ignition head 3 can maintain a stable connection relationship, which is simple to assemble and efficient. The housing 1 can also adopt a structure in which two parts are clamped on the left and right, but the limiting effect of the structure in which two parts are clamped on the left and right on the connecting plate 201 is poorer than that of an integrated ring. The housing 1 can also adopt a structure in which two parts are connected by left and right screws. Compared with an integrated ring, the assembly process is increased and the production efficiency is reduced.

[0040] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An arc ignition gun, comprising a housing (1), a middle frame (2) located in the housing (1), an ignition head (3) arranged at one end of the housing (1), and an arc ignition assembly arranged in the ignition head (3), characterized in that: Two connecting plates (201) arranged opposite to each other are provided at one end of the middle frame (2); the two connecting plates (201) are respectively located on two sides of the ignition head (3) and form snap-fit ​​connection structures with the ignition head (3).

2. The arc ignition gun according to claim 1, characterized in that: A protruding hook (301) is provided on the side wall of the ignition head (3), and a clamping groove (202) is correspondingly provided on the connection plate (201); the hook (301) extends into the clamping groove (202) so that the connection plate (201) and the side wall of the ignition head (3) form a snap-fit ​​connection structure.

3. The arc ignition gun according to claim 1, characterized in that: The connecting plate (201) is integrally formed on the middle frame (2) and is arranged to be raised relative to the middle frame (2); the housing (1) is arranged outside the connecting plate (201) to limit the connecting plate (201), so that the connecting plate (201) and the ignition head (3) are kept in a snap-fit ​​connection.

4. The arc ignition gun according to claim 3, characterized in that: The width of the connecting plate (201) is smaller than the width of the ignition head (3); a limiting groove (302) matching the shape of the connecting plate (201) is provided on a side wall of the ignition head (3); the connecting plate (201) is located in the limiting groove (302); and the housing (1) at least covers the outer periphery of a portion where the ignition head (3) and the connecting plate (201) are connected.

5. The arc ignition gun according to claim 1, characterized in that: The arc ignition assembly comprises an insulating seat (4), the insulating seat (4) being provided with at least one group of through holes (401) through which an arc lead can pass, the ignition head (3) being sleeved outside the insulating seat (4) and forming an upper end limit for the insulating seat (4), and a support frame being provided on the middle frame (2), the support frame forming a lower end limit for the insulating seat (4).

6. The arc ignition gun according to claim 5, characterized in that: A positioning protrusion (204) is formed at the upper end of the support frame, and a positioning groove (403) which is plug-fitted with the positioning protrusion (204) is formed at the bottom of the insulating seat (4).

7. The arc ignition gun according to claim 6, characterized in that: The support frame comprises a bottom connecting rod (2031), an intermediate column (2032) connected to the upper end of the bottom connecting rod (2031), and a side plate (2033) connected to the upper end of the bottom connecting rod (2031) and on the side of the intermediate column (2032); one end of the middle frame (2) forms an annular frame (206); both ends of the bottom connecting rod (2031) are fixedly connected to the inner wall of the annular frame (206); and through holes (205) for power supply arc leads to pass through are formed between the two sides of the bottom connecting rod (2031) and the annular frame (206); the upper end of the intermediate column (2032) is raised relative to the upper end of the side plate (2033) so that a positioning convex block (204) is formed on the upper end of the intermediate column (2032); and the upper end of the side plate (2033) cooperates with the lower end of the insulating seat (4) to form a lower end limit.

8. The arc ignition gun according to claim 7, characterized in that: The side plate (2033) is arranged on the side of the middle column (2032) facing the connecting plate (201), and a gap (207) for inserting the ignition head (3) is formed between the side plate (2033) and the connecting plate (201).

9. The arc ignition gun according to claim 5, characterized in that: The upper end of the insulating seat (4) is provided with two raised positioning and mounting feet (402), and the two positioning and mounting feet (402) are respectively provided with through holes (401) for passing the power arc lead wire, and the two through holes (401) are arranged opposite to each other so that an arc generation area is formed between the two positioning and mounting feet (402); The ignition head (3) comprises a foot cover (303) which is arranged on the outside and upper end of the positioning installation foot (402).

10. The arc ignition gun according to any one of claims 1 to 9, characterized in that: The shell (1) is an integral annular member with openings at both ends, and is sleeved outside the middle frame (2) and the ignition head (3). An end of the shell (1) away from the ignition head (3) is connected to an end cover (5), and the opening is sealed by the end cover (5).

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