Ignition device housing structure

Abstract

The utility model relates to a kind of shell structure of ignition device, including shell and cover plate, the shell is made of plastic, shell includes the front shell and rear shell including split setting, the cover plate is made of metal material, the cover plate is located at the front side of front shell, the cover plate is arc-shaped arrangement, the two side edges of cover plate are equipped with inwardly hooked flanging, positioning groove is equipped on the shell, the flanging is placed in positioning groove, it further includes the head cover and bottom cover respectively equipped on the upper and lower ends of shell, the upper end of shell is inserted in head cover, the lower end of shell is inserted in bottom cover, the upper and lower ends of cover plate are respectively in contact with head cover and bottom cover arrangement.Using the above technical scheme, the utility model provides a kind of shell structure of ignition device, fuses plastic shell and metal panel, while maintaining the advantage of low cost, improve the structural strength, wear resistance and use hand feeling of shell in key position, improve the overall quality of product.

Description

Technical Field

[0001] This utility model relates to the field of ignition equipment technology, and in particular to the outer shell structure of an ignition device. Background Technology

[0002] Ignition devices (such as lighters and ignition guns) are widely used tools in daily life. Existing ignition devices typically consist of a casing and an ignition mechanism housed within it, with the casing often made of metal (such as copper or aluminum alloy). Metal casings have long been widely used in mid-to-high-end ignition device products due to their excellent structural strength, wear resistance, and the aesthetic appeal of their metallic appearance. However, metal casings also present challenges such as high material costs and complex manufacturing processes, resulting in a higher overall product cost.

[0003] To reduce production costs, existing technologies have introduced solutions that use plastic materials to make the entire casing of ignition devices. Plastic casings offer advantages such as easy molding, high production efficiency, and low material costs, significantly reducing the manufacturing cost of ignition devices. However, all-plastic casings also have significant drawbacks: the surface hardness and wear resistance of plastic casings are poor, especially on the side where the push button is located, making it prone to scratches, wear, and even cracks after prolonged use, affecting product lifespan and appearance quality; furthermore, all-plastic casings lack the visual and tactile feel of metallic materials, lowering the product's perceived quality and market competitiveness.

[0004] In view of this, it is necessary to improve the housing structure of existing ignition devices. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art by providing a shell structure for an ignition device that integrates a plastic shell and a metal panel. While maintaining the advantage of low cost, it improves the structural strength, wear resistance and feel of the shell in key parts, thereby enhancing the overall quality of the product.

[0006] The technical solution of this utility model is as follows: A shell structure for an ignition device, comprising a shell and a cover plate. The shell is made of plastic and includes a front shell and a rear shell, which are separately configured and connected to form an assembly chamber. The cover plate is made of metal and is located on the front side of the front shell. The cover plate is arc-shaped and has inwardly hooked flanges on both sides. The shell has a positioning groove, and the flanges are placed in the positioning groove. The device also includes a head cover and a bottom cover, which are respectively located at the upper and lower ends of the shell. The upper end of the shell is inserted into the head cover, and the lower end of the shell is inserted into the bottom cover. The upper and lower ends of the cover plate abut against the head cover and the bottom cover, respectively.

[0007] By adopting the above technical solution, the shell is made of plastic, which significantly reduces material costs and molding difficulty. At the same time, an arc-shaped metal cover is set on the front side of the front shell, which allows the product to retain the wear resistance, scratch resistance and cool touch of metal in key areas where the product is frequently gripped and operated by pushing buttons. This not only controls the overall cost but also enhances the product's quality. The cover is physically interlocked with the plastic shell by the flanges on both sides, preventing the cover from lifting or falling off during long-term use. The arc-shaped design of the cover is more in line with finger operating habits. In addition, the top cover and bottom cover respectively form abutment limit at the upper and lower ends of the cover, locking the cover from the vertical direction to prevent it from moving up and down, further enhancing the long-term reliability of the overall structure.

[0008] A further feature of this invention is that a gap is provided between the two sides of the front shell and the rear shell to form the positioning groove, and the flange is engaged in the gap and abuts against the rear shell.

[0009] With the above-mentioned further configuration, the natural gap between the front shell side and the rear shell is used as a positioning groove, eliminating the need to open a complex groove structure on the mold, which simplifies the mold design. At the same time, the flange is engaged in the gap and abuts against the rear shell, using the rear shell as a supporting back plate, so that when the cover plate is subjected to lateral extrusion force, it can be directly transferred to the rear shell, which enhances the cover plate's resistance to dents.

[0010] A further feature of this invention is that the two sides of the front shell are provided with outwardly extending positioning bosses, the positioning bosses, the sides of the front shell and the front side of the rear shell form the positioning groove, the sides of the front shell press against the rear shell, and the flange is located in the positioning groove.

[0011] By further modifying the above-mentioned design and adding a positioning boss, a clearly defined groove is formed, consisting of the boss, the front shell side, and the rear shell. This structure not only increases the contact area between the flange and the shell, resulting in higher positioning accuracy, but also ensures that the front shell side directly presses against the rear shell, guaranteeing a tight fit between the front and rear shells. At the same time, the flange is firmly wrapped in the groove, further improving the holding force of the cover plate under severe vibration or drop conditions.

[0012] A further feature of this invention is as follows: the upper ends of the front and rear shells are provided with first mounting holes, and the head cover is provided with second mounting holes. When the upper end of the shell is inserted into the head cover, the first mounting hole and the second mounting hole are coaxially arranged and a first screw is passed through to fix the shell and the head cover. The bottom of the front and rear shells are provided with third mounting holes, and the bottom cover is provided with fourth mounting holes. When the lower end of the shell is inserted into the bottom cover, the third mounting hole and the fourth mounting hole are coaxially arranged and a second screw is passed through to fix the shell and the bottom cover.

[0013] The above-mentioned further design involves using a first screw and a second screw to fix the head cover, bottom cover and housing together, which is a rigid mechanical connection with excellent tensile and impact resistance, effectively preventing the end cover from accidentally loosening. At the same time, the screw connection method is easy to disassemble. When the internal ignition device needs to be repaired or the gas box needs to be replaced, the user can easily remove the end cover, which has good maintainability.

[0014] A further feature of this invention is that the front shell has several insertion posts on both sides along its length, and the rear shell has several corresponding insertion holes, with each insertion post inserted into the corresponding insertion hole.

[0015] The above-mentioned further design plays a role in pre-positioning and guiding during assembly, which greatly improves the production efficiency of the assembly line. At the same time, the multiple sets of plug-in hole structures distributed along the length direction can effectively resist the torsional torque generated by the shell during use, prevent the front and rear shells from misaligning, and ensure the rigidity of the overall shell.

[0016] A further feature of this invention is as follows: a groove is provided on the front side of the front shell, and a slot communicating with the assembly chamber is provided on the rear end face of the groove. A detachable transparent cover is also provided in the groove. The transparent cover has an installation port and a sliding groove. A through groove is provided on the cover plate corresponding to the position of the transparent cover so that the transparent cover can be exposed.

[0017] With the above-mentioned further design, users can directly observe the interior of the assembly chamber through the transparent cover, improving ease of use. The groove at the rear end of the recess can connect to the interior, facilitating the extension of functional components. The transparent cover is equipped with an installation port and a sliding groove, providing a precise sliding track for the push button to ensure smooth operation. The through groove on the cover plate exposes the transparent cover, which can be protected by the metal cover plate without obstructing the view, thus combining aesthetics and practicality.

[0018] A further feature of this invention is that the transparent cover has connecting hooks at both ends, and the groove has a corresponding connecting slot, with the connecting hooks engaging with the connecting slots.

[0019] By adopting the above-mentioned further design, screwless quick assembly and disassembly are achieved, reducing assembly costs. The hook and latch structure has a certain degree of elastic deformation capability, which not only ensures that the transparent cover will not easily loosen when subjected to vibration during use, but also facilitates users to disassemble it by hand for internal cleaning or component replacement later, thus balancing the stability of the connection and the convenience of operation. Attached Figure Description

[0020] Figure 1 This is a front view of a specific embodiment of the present utility model; Figure 2 for Figure 1 A cross-sectional view along the AA direction; Figure 3 for Figure 1 Cross-sectional view along the BB direction; Figure 4 This is a schematic diagram of the cover plate according to a specific embodiment of the present utility model; Figure 5 This is a top view of the cover plate in a specific embodiment of the present utility model; Figure 6 This is a schematic diagram of the shell, head cover, and bottom cover of a specific embodiment of the present utility model; Figure 7 This is a schematic diagram of the rear shell of a specific embodiment of the present utility model; Figure 8 This is a schematic diagram of the front shell of a specific embodiment of the present utility model; Figure 9 This is a schematic diagram of the transparent cover according to a specific embodiment of the present utility model; Figure 10 A schematic diagram of an embodiment where a gap exists between the front and rear shells; Figure 11 for Figure 10 A cross-sectional view along the CC direction.

[0021] In the diagram, 1. Housing; 11. Front housing; 111. Positioning boss; 112. First mounting hole; 113. Third mounting hole; 114. Insert post; 115. Groove; 116. Slot; 117. Connecting bayonet; 12. Rear housing; 121. Insertion hole; 13. Assembly chamber; 14. Positioning groove; 2. Cover plate; 21. Flanged edge; 22. Through groove; 3. Circuit board; 31. Indicator light; 32. Switch; 33. Charging port; 4. Head cover; 41. Second mounting hole; 5. Bottom cover; 51. Fourth mounting hole; 6. Transparent cover; 61. Mounting opening; 62. Slide groove; 63. Connecting hook. Detailed Implementation

[0022] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that all directional indicators (such as up, down, forward, backward, etc.) in the description of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] like Figure 1-11As shown, an ignition device housing structure includes a housing 1 and a cover plate 2. The housing 1 is made of plastic and includes a front housing 11 and a rear housing 12, which are separately configured. The front housing 11 and the rear housing 12 are connected and fixed to form an assembly chamber 13. The assembly chamber 13 is used to install the ignition structure, which includes a circuit board 3, a high-voltage pack, and a battery, etc. It can also be a gas storage tank, a gas outlet assembly, and a pressure point electronics, etc. This part of the structure is all prior art. The gas outlet pipe and lead wire or arc output wire extend into the cover plate 4. The circuit board 3 is equipped with an indicator light 31 and a switch 32. The front housing 11 is equipped with... The device includes buttons and push buttons to control the ignition mechanism. The working principle and structure of this part are existing technologies and are not improved by this invention; therefore, they will not be specifically described further. The cover plate 2 is made of metal, such as copper, zinc alloy, aluminum, or titanium alloy. The cover plate 2 is located on the front side of the front shell 11 and is arc-shaped. Both sides of the cover plate 2 have inwardly hooked flanges 21. The shell 1 has a positioning groove 14, and the flanges 21 are placed within the positioning groove 14. The device also includes a head cover 4 and a bottom cover 5 respectively located at the upper and lower ends of the shell 1. The upper end is inserted into the head cover 4, and the lower end of the housing 1 is inserted into the bottom cover 5. The upper and lower ends of the cover plate 2 abut against the head cover 4 and the bottom cover 5, respectively. The ceramic cup can be directly installed on the head cover, or it can be installed on the upper end of the housing, such as the upper end of the front shell in this utility model. The upper end of the front shell has a slot, and the ceramic cup is assembled in the slot. Alternatively, a flexible tube can be connected to the head cover, and the ceramic cup is installed at the end of the flexible tube. The fitting relationship between the flexible tube and the ceramic cup is existing technology. The housing 1 is made of plastic, which greatly reduces material costs and molding difficulty. At the same time, an arc-shaped metal is provided on the front side of the front shell 11. The cover plate 2 retains the wear resistance, scratch resistance, and cool touch of metal in key areas of frequent gripping and button operation, controlling overall costs while enhancing the product's quality. The cover plate 2 is physically interlocked with the plastic shell 1 by the flanges 21 on both sides engaging with the positioning grooves 14, preventing the cover plate 2 from prying up or falling off during long-term use. The curved design of the cover plate 2 is more in line with finger operating habits. In addition, the top cover 4 and bottom cover 5 respectively form abutment limits at the top and bottom ends of the cover plate 2, locking the cover plate 2 vertically to prevent it from moving up and down, further enhancing the long-term reliability of the overall structure.

[0027] The front shell 11 has gaps between its two sides and the rear shell 12 to form the positioning grooves 14. The flange 21 is engaged in the gaps and abuts against the rear shell 12. By using the natural gaps between the sides of the front shell 11 and the rear shell 12 as the positioning grooves 14, there is no need to open complex groove structures on the mold, which simplifies the mold design. At the same time, the flange 21 is engaged in the gaps and abuts against the rear shell 12. By using the rear shell 12 as a supporting back plate, the cover plate 2 can be directly transferred to the rear shell 12 when subjected to lateral extrusion force, which enhances the anti-denting ability of the cover plate 2.

[0028] The front shell 11 has outwardly extending positioning bosses 111 on both sides. The positioning bosses 111, the sides of the front shell 11, and the front side of the rear shell 12 form the positioning groove 14. The sides of the front shell 11 press against the rear shell 12. The flange 21 is located in the positioning groove 14. By adding the positioning bosses 111, a clear groove is formed by the bosses, the sides of the front shell 11, and the rear shell 12. This structure not only increases the contact area between the flange 21 and the shell 1, resulting in higher positioning accuracy, but also ensures that the sides of the front shell 11 directly press against the rear shell 12, ensuring that the front and rear shells 12 fit tightly together. At the same time, the flange 21 is firmly wrapped in the groove, further improving the holding force of the cover plate 2 under severe vibration or drop conditions.

[0029] The upper ends of the front shell 11 and the rear shell 12 are provided with first mounting holes 112, and the head cover 4 is provided with second mounting holes 41. When the upper end of the shell 1 is inserted into the head cover 4, the first mounting holes 112 and 41 are coaxially arranged and a first screw is passed through to fix the shell 1 and the head cover 4. The bottom of the front shell 11 and the rear shell 12 is provided with third mounting holes 113, and the bottom cover 5 is provided with fourth mounting holes 51. When the lower end of the shell 1 is inserted into the bottom cover 5, the third mounting holes 113 and 51 are coaxially arranged and a second screw is passed through to fix the shell 1 and the bottom cover 5. The head cover 4, the bottom cover 5 and the shell 1 are fixed by the first screw and the second screw, which is a rigid mechanical connection with excellent tensile and impact resistance, effectively preventing the end cover from accidentally loosening. At the same time, the screw connection method is easy to disassemble. When the internal ignition device needs to be repaired or the gas box needs to be replaced, the user can easily disassemble it. The end cap provides good maintainability and features a set of mounting holes and screws in the middle of the housing 1. The screws pass through the circuit board 3 to fix the circuit board 3 and prevent it from shifting. The circuit board 3 has a charging port 33 that extends from the rear housing 12. The upper and lower ends of the circuit board 3 can also be connected and fixed to the front housing 11 and the rear housing 12 by screws. The front housing 11 has several posts 114 along its length on both sides, and the rear housing 12 has several corresponding holes 121. Each post 114 is inserted into the corresponding hole 121, which plays a role in pre-positioning and guiding during assembly, greatly improving the production efficiency of the assembly line. At the same time, the multiple sets of posts 114 and holes 121 distributed along the length can effectively resist the torsional torque generated by the housing 1 during use, prevent the front and rear housings 12 from misaligning, and ensure the rigidity of the overall housing 1.

[0030] The front side of the front shell 11 is provided with a groove 115, and the rear end face of the groove 115 is provided with a slot 116 communicating with the assembly chamber 13. A removable transparent cover 6 is also provided inside the groove 115. The transparent cover 6 is provided with an installation port 61 and a sliding groove 62. A through slot 22 is provided on the cover plate 2 corresponding to the position of the transparent cover 6, allowing the transparent cover 6 to be exposed. Users can directly observe the interior of the assembly chamber 13 through the transparent cover 6, improving ease of use. The slot 116 at the rear end of the groove 115 can connect to the interior, facilitating the extension of functional components. The installation port 61 and sliding groove 62 on the transparent cover 6 provide a precise sliding track for the push button. To ensure smooth operation, the through groove 22 on the cover plate 2 exposes the transparent cover 6, which is protected by the metal cover plate 2 without obstructing the view, thus combining aesthetics and practicality. The transparent cover 6 has connecting hooks 63 at both ends, and corresponding connecting slots 117 are provided on the groove 115. The connecting hooks 63 and connecting slots 117 engage with each other, enabling quick assembly and disassembly without screws, reducing assembly costs. The hook and slot structure has a certain degree of elastic deformation capability, which ensures that the transparent cover 6 will not easily loosen when subjected to vibration during use, and also facilitates manual disassembly by the user for internal cleaning or component replacement, thus balancing the stability of the connection and the convenience of operation.

Claims

1. A housing structure for an ignition device, characterized in that, The assembly includes a housing (1) and a cover plate (2). The housing (1) is made of plastic and includes a front shell (11) and a rear shell (12) which are separately configured. The front shell (11) and the rear shell (12) are connected and fixed to form an assembly chamber (13). The cover plate (2) is made of metal and is located on the front side of the front shell (11). The cover plate (2) is arc-shaped and has inwardly hooked flanges (21) on both sides. The housing (1) has a positioning groove (14) and the flanges (21) are placed in the positioning groove (14). The assembly also includes a head cover (4) and a bottom cover (5) located at the upper and lower ends of the housing (1). The upper end of the housing (1) is inserted into the head cover (4) and the lower end of the housing (1) is inserted into the bottom cover (5). The upper and lower ends of the cover plate (2) are respectively in contact with the head cover (4) and the bottom cover (5).

2. The housing structure of the ignition device according to claim 1, characterized in that, The front shell (11) has gaps between its two sides and the rear shell (12) to form the positioning groove (14). The flange (21) is engaged in the gap and abuts against the rear shell (12).

3. The housing structure of the ignition device according to claim 1, characterized in that, The front shell (11) has outwardly extending positioning bosses (111) on both sides. The positioning bosses (111), the side of the front shell (11) and the front side of the rear shell (12) form the positioning groove (14). The side of the front shell (11) presses against the rear shell (12), and the flange (21) is located in the positioning groove (14).

4. The housing structure of the ignition device according to claim 1, 2, or 3, characterized in that, The upper ends of the front shell (11) and the rear shell (12) are provided with a first mounting hole (112), and the head cover (4) is provided with a second mounting hole (41). When the upper end of the shell (1) is inserted into the head cover (4), the first mounting hole (112) and the second mounting hole (41) are coaxially arranged and a first screw is passed through to fix the shell (1) and the head cover (4). The bottom of the front shell (11) and the rear shell (12) is provided with a third mounting hole (113), and the bottom cover (5) is provided with a fourth mounting hole (51). When the lower end of the shell (1) is inserted into the bottom cover (5), the third mounting hole (113) and the fourth mounting hole (51) are coaxially arranged and a second screw is passed through to fix the shell (1) and the bottom cover (5).

5. The housing structure of the ignition device according to claim 1, 2, or 3, characterized in that, The front shell (11) has several insertion posts (114) on both sides along its length direction, and the rear shell (12) has several corresponding insertion holes (121), with each insertion post (114) inserted into the corresponding insertion hole (121).

6. The housing structure of the ignition device according to claim 1, 2, or 3, characterized in that, The front side of the front shell (11) is provided with a groove (115), and the rear end face of the groove (115) is provided with a slot (116) communicating with the assembly chamber (13). The groove (115) is also provided with a detachable transparent cover (6). The transparent cover (6) is provided with an installation port (61) and a sliding groove (62). The cover plate (2) is provided with a through groove (22) corresponding to the position of the transparent cover (6) so that the transparent cover (6) can be exposed.

7. The housing structure of the ignition device according to claim 6, characterized in that, The transparent cover (6) has connecting hooks (63) at both ends, and the groove (115) has a corresponding connecting slot (117). The connecting hooks (63) and the connecting slots (117) engage with each other.

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