An ignition head mounting structure for an electric arc ignition gun

Abstract

This utility model specifically relates to an ignition head mounting structure for an arc ignition gun, including an ignition gun body and an ignition head disposed at one end of the ignition gun body. The ignition head includes an arc seat, an arc head disposed within the arc seat, and an ignition head shell disposed outside the arc seat. The ignition gun body includes a connecting frame, and a connecting cylinder is connected to the end of the connecting frame near the arc seat. A first recess / first protrusion is provided on the outer periphery of the connecting cylinder, and a second protrusion / second recess is provided on the inner periphery of the ignition head shell corresponding to the first recess / first protrusion to form a mating relationship. One end of the connecting cylinder penetrates into the ignition head shell, and the second protrusion extends into the first recess / first protrusion extends into the second recess, thereby snapping the ignition head shell and the connecting cylinder together. The snapping engagement between the ignition head shell and the connecting cylinder is achieved when the connecting cylinder penetrates into the ignition head shell until the protrusion between them is located within the recess. This design is simple to assemble, compact in structure, and low in production cost.

Description

Technical Field

[0001] This utility model relates to the field of arc ignition gun technology, specifically to an ignition head mounting structure for an arc ignition gun. Background Technology

[0002] An ignition gun includes an ignition gun body and an ignition head connected to one end of the ignition gun body. The ignition head generally includes an arc socket, an arc head housed within the arc socket, and an ignition head shell housed outside the arc socket to protect it. The ignition head shell prevents the arc head from bending or short-circuiting due to accidental impact. In existing technology, a connecting sleeve is usually fixedly installed near the ignition head in the connecting frame of the ignition gun body. The ignition head shell is fitted over the arc socket and the connecting sleeve, and is fixed to the connecting sleeve by threaded parts passing through the ignition head shell. This assembly method requires machining screw holes in the shell, resulting in high processing costs and low assembly efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an ignition head mounting structure for an arc ignition gun.

[0004] The technical solution adopted by this utility model is as follows: an ignition head mounting structure for an electric arc ignition gun, comprising an ignition gun body and an ignition head disposed at one end of the ignition gun body, wherein the ignition head comprises an arc seat, an arc head disposed within the arc seat, and an ignition head shell disposed outside the arc seat.

[0005] The ignition gun body includes a connecting frame, and a connecting cylinder is connected to the end of the connecting frame near the arc seat. The outer periphery of the connecting cylinder is provided with a first recess / first protrusion, and the inner periphery of the ignition head shell is provided with a second protrusion / second recess corresponding to the first recess / first protrusion to form a cooperation with it.

[0006] One end of the connecting cylinder is inserted into the ignition head housing, and the second protrusion extends into the first recess / the first protrusion extends into the second recess, so that the ignition head housing and the connecting cylinder are snapped together.

[0007] Preferably, a snap-fit ​​connection structure is provided between the connecting cylinder and the connecting frame.

[0008] Preferably, the inner circumference of the connecting cylinder is provided with a protruding hook relative to the connecting frame, and the side wall of the connecting frame is provided with a first slot accordingly. The hook extends into the first slot so that the connecting cylinder and the connecting frame form a snap-fit ​​connection structure.

[0009] Preferably, the inner circumference of the connecting cylinder includes a first variable diameter surface and a second cylindrical surface connected from the end near the arc seat to the end away from the arc seat. The second cylindrical surface is located around the connecting frame and is adapted to its shape. The first variable diameter surface is located above the connecting frame and its diameter decreases from bottom to top, restricting the downward movement of the connecting cylinder.

[0010] Preferably, the connecting cylinder is composed of a first connecting part and a second connecting part located on both sides of the connecting frame. The first connecting part and the connecting frame are provided with a snap-fit ​​connection structure. The cross-section of the first connecting part and the second connecting part is U-shaped and the openings are opposite to each other. The first connecting part and the second connecting part are connected by an insertion structure provided along the opening direction of the two parts.

[0011] Preferably, the mating structure includes corresponding insert blocks and slots respectively provided on the end faces of the second connecting part and the first connecting part, and the insert blocks are inserted into the slots to make the first connecting part and the second connecting part mat and connect.

[0012] Preferably, the lower end of the second connecting part is provided with connecting grooves on both sides of the opening, and the first connecting part is correspondingly provided with connecting protrusions that engage with it.

[0013] Preferably, a protrusion is provided on the inner side of the second connecting part, and a second slot is correspondingly provided on the side wall of the connecting frame, with the protrusion located in the second slot.

[0014] Preferably, the bottom of the first connecting part is provided with a connecting ring part that matches its shape around the connecting frame, and the upper end of the connecting ring part abuts against the lower end of the second connecting part.

[0015] Preferably, the second protrusion / first protrusion is in the form of a protruding dot and has a convex arc surface.

[0016] The beneficial effects of this utility model are as follows: the connecting cylinder is inserted into the ignition head housing until the protrusion between the two is located in the concave part, which realizes the snap-fit ​​between the ignition head housing and the connecting cylinder. The assembly is simple, the structure is compact, and the production cost is low. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0018] Figure 1 This is a front view of the overall structure of an embodiment of this utility model;

[0019] Figure 2 This is a partial side sectional view of the overall structure of an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is an exploded view of the structure of an embodiment of the present utility model;

[0022] Figure 5 This is a perspective view of the first connecting part in an embodiment of the present utility model;

[0023] Figure 6 for Figure 2 Enlarged view of the structure at point B in the middle;

[0024] Figure 7 This is a front view of the first connecting part and the second connecting part in the embodiment of this utility model before they are assembled;

[0025] Figure 8 This is a front view of the first connecting part and the second connecting part after assembly in an embodiment of this utility model;

[0026] In the diagram, 1 is the connecting frame; 2 is the arc seat; 3 is the ignition head housing; 4 is the connecting cylinder; 11 is the first slot; 12 is the second slot; 41 is the first connecting part; 42 is the second connecting part; 43 is the connecting ring; 301 is the second protrusion; 401 is the first recess; 402 is the first diameter changing surface; 403 is the two cylindrical surfaces; 404 is the hook; 411 is the slot; 412 is the connecting protrusion; 421 is the insertion block; 422 is the connecting groove; and 423 is the protrusion. Detailed Implementation

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

[0028] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0029] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0030] like Figures 1 to 8 As shown in the figure, an ignition head mounting structure for an arc ignition gun is provided in an embodiment of this utility model. The structure includes an ignition gun body and an ignition head disposed at one end of the ignition gun body. The ignition head includes an arc base 2, an arc head disposed within the arc base 2, and an ignition head housing 3 disposed outside the arc base 2.

[0031] The ignition gun body includes a connecting frame 1. A connecting cylinder 4 is connected to the end of the connecting frame 1 near the arc seat 2. A first recess 401 / first protrusion is provided on the outer periphery of the connecting cylinder 4. A second protrusion 301 / second recess is provided on the inner periphery of the ignition head shell 3 corresponding to the first recess 401 / first protrusion to form a cooperation with it.

[0032] One end of the connecting cylinder 4 is inserted into the ignition head housing 3, and the second protrusion 301 extends into the first recess 401 / the first protrusion extends into the second recess, so that the ignition head housing 3 and the connecting cylinder 4 are snapped together.

[0033] With this design, the connecting cylinder is inserted into the ignition head housing until the protrusion between the two is located within the recess, thus achieving a snap-fit ​​connection between the ignition head housing and the connecting cylinder. This design is simple to assemble, has a compact structure, and low production costs.

[0034] The connecting cylinder 4 and the connecting frame 1 are provided with a snap-fit ​​connection structure.

[0035] This design improves the ease of assembly and structural compactness between the connecting cylinder and the connecting frame.

[0036] The inner circumference of the connecting cylinder 4 is provided with a protruding hook 404 relative to the connecting frame, and the side wall of the connecting frame 1 is provided with a corresponding first slot 11. The hook 404 extends into the first slot 11 so that the connecting cylinder 4 and the connecting frame 1 form a snap-fit ​​connection structure.

[0037] This design achieves a stable connection between the connecting cylinder and the connecting frame. In this embodiment, a through groove is provided on the side wall of the connecting cylinder, and the hook connects to the through groove and can swing relative to both sides of the through groove, thereby making the assembly of the connecting cylinder and the connecting frame more convenient.

[0038] The inner circumference of the connecting cylinder 4 includes a first variable diameter surface 402 and a second cylindrical surface 403 connected from the end near the arc seat 2 to the end away from the arc seat 2. The second cylindrical surface 403 is located around the connecting frame 1 and is adapted to its shape. The first variable diameter surface 402 is located above the connecting frame 1 and its diameter decreases from bottom to top, restricting the downward movement of the connecting cylinder 4.

[0039] This design further improves the stability of the connection between the connecting cylinder and the connecting frame. In this embodiment, the diameter of the second variable-diameter surface changes significantly near its lower end, forming a near-planar contact surface. This increases the contact area with the top of the connecting frame, thereby further improving connection stability.

[0040] The connecting cylinder 4 is composed of a first connecting part 41 and a second connecting part 42 located on both sides of the connecting frame 1. The first connecting part 41 and the connecting frame 1 are provided with a snap-fit ​​connection structure. The cross-section of the first connecting part 41 and the second connecting part 42 is U-shaped and the openings are opposite to each other. The first connecting part 41 and the second connecting part 42 are connected by a plugging structure provided along the opening direction of the two.

[0041] With this setup, after installing the first connecting part, the arc lead wire (not shown in the figure) that passes through the connecting frame is passed through the through hole on the arc seat and connected to the arc head. Then, the second connecting part is installed so that it is inserted and connected to the first connecting part. Compared with the integrated connecting cylinder, this structure has more operating space when assembling the arc lead wire, which improves the convenience of assembly.

[0042] The mating structure includes corresponding insert blocks 421 and slots 411 respectively provided on the end faces of the second connecting part 42 and the first connecting part 41. The insert blocks 421 are inserted into the slots 411 to make the first connecting part 41 and the second connecting part 42 mat and connect.

[0043] The second connecting part 42 has connecting grooves 422 on both sides of the opening at its lower end, and the first connecting part 41 has corresponding connecting protrusions 412 that engage with it.

[0044] The inner side of the second connecting part 42 is also provided with a protrusion 423, and the side wall of the connecting frame 1 is correspondingly provided with a second slot 12, and the protrusion 423 is located in the second slot 12.

[0045] The above settings improve the stability of the connection between the first connecting part and the second connecting part.

[0046] The bottom of the first connecting part 41 is provided with a connecting ring part 43 that matches its shape around the connecting frame 1, and the upper end of the connecting ring part 43 abuts against the lower end of the second connecting part 42.

[0047] This design improves the strength of the first connecting part, as well as the stability of the first connecting part connected to the connecting frame and the stability of the connection between the second connecting part and the first connecting part.

[0048] The second protrusion 301 / the first protrusion is in the shape of a protrusion point and has a convex arc surface.

[0049] This design further improves the ease of assembling the ignition head housing and makes it less prone to damage during insertion and removal.

[0050] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An ignition head mounting structure for an arc ignition gun, comprising an ignition gun body and an ignition head disposed at one end of the ignition gun body, wherein the ignition head comprises an arc seat (2), an arc head disposed within the arc seat (2), and an ignition head housing (3) disposed outside the arc seat (2), characterized in that: The main body of the ignition gun includes a connecting frame (1), and a connecting cylinder (4) is connected to the end of the connecting frame (1) near the arc seat (2). The outer periphery of the connecting cylinder (4) is provided with a first recess (401) / first protrusion, and the inner periphery of the ignition head shell (3) is provided with a second protrusion (301) / second recess corresponding to the first recess (401) / first protrusion to form a cooperation with it. One end of the connecting cylinder (4) is inserted into the ignition head housing (3), and the second protrusion (301) extends into the first recess (401) / the first protrusion extends into the second recess so that the ignition head housing (3) and the connecting cylinder (4) are snapped together.

2. The ignition head mounting structure of an arc ignition gun according to claim 1, characterized in that: A snap-fit ​​connection structure is provided between the connecting cylinder (4) and the connecting frame (1).

3. The ignition head mounting structure of an arc ignition gun according to claim 2, characterized in that: The inner circumference of the connecting cylinder (4) is provided with a protruding hook (404) relative to the connecting frame, and the side wall of the connecting frame (1) is provided with a first slot (11) accordingly. The hook (404) extends into the first slot (11) so that the connecting cylinder (4) and the connecting frame (1) form a snap-fit ​​connection structure.

4. The ignition head mounting structure of an arc ignition gun according to claim 1, characterized in that: The inner circumference of the connecting cylinder (4) from one end near the arc seat (2) to the other end away from the arc seat (2) includes a first variable diameter surface (402) and a second cylindrical surface (403) connected to each other. The second cylindrical surface (403) is located around the connecting frame (1) and is adapted to its shape. The first variable diameter surface (402) is located above the connecting frame (1) and its diameter decreases from bottom to top, restricting the downward movement of the connecting cylinder (4).

5. The ignition head mounting structure of an arc ignition gun according to claim 4, characterized in that: The connecting cylinder (4) consists of a first connecting part (41) and a second connecting part (42) located on both sides of the connecting frame (1). The first connecting part (41) and the connecting frame (1) are provided with a snap-fit ​​connection structure. The cross-section of the first connecting part (41) and the second connecting part (42) is U-shaped and the openings are opposite to each other. The first connecting part (41) and the second connecting part (42) are connected by a plugging structure provided along the opening direction of both.

6. The ignition head mounting structure of an arc ignition gun according to claim 5, characterized in that: The mating structure includes corresponding inserts (421) and slots (411) respectively provided on the end faces of the second connecting part (42) and the first connecting part (41). The inserts (421) are inserted into the slots (411) to make the first connecting part (41) and the second connecting part (42) mat and connect.

7. The ignition head mounting structure of an arc ignition gun according to claim 5, characterized in that: The second connecting part (42) has connecting grooves (422) on both sides of the opening at its lower end, and the first connecting part (41) has corresponding connecting protrusions (412) that engage with it.

8. The ignition head mounting structure of an arc ignition gun according to claim 5, characterized in that: The inner side of the second connecting part (42) is also provided with a protrusion (423), and the side wall of the connecting frame (1) is correspondingly provided with a second slot (12), and the protrusion (423) is located in the second slot (12).

9. The ignition head mounting structure of an arc ignition gun according to claim 5, characterized in that: The bottom of the first connecting part (41) is provided with a connecting ring part (43) that matches its shape around the connecting frame (1), and the upper end of the connecting ring part (43) abuts against the lower end of the second connecting part (42).

10. The ignition head mounting structure of an arc ignition gun according to any one of claims 1-9, characterized in that: The second protrusion (301) / the first protrusion is in the shape of a protrusion and has a convex arc surface.

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