CN116951768A - Plug-in type shell, gas water heater and plug-in type shell processing method - Google Patents

Abstract

The application belongs to the technical field of heat supply, and particularly discloses a plug-in type shell, a gas water heater and a plug-in type shell processing method. The plug-in type shell comprises a bottom shell, two first end plates and two second end plates, wherein the two first end plates are oppositely arranged; the first end plate and the second end plate are all integrally formed with the bottom shell, and the first end plate and the second end plate are arranged around the bottom shell in a surrounding mode to form a containing cavity; one of the first end plate and the second end plate is provided with a plug hole, the other one is provided with a plug tooth, the plug tooth and the plug hole are correspondingly plugged and matched, and one side wall of the plug tooth is abutted with the first end plate or the second end plate. The plug-in type shell provided by the embodiment of the application has a simple structure, and can be processed in batches by adopting automatic processing equipment, so that the gas water heater has the advantages of low processing cost and good sealing performance; the plug-in type body processing method is used for processing the plug-in type shell, is higher in automation degree, can further reduce labor cost and improves production efficiency.

Description

Plug-in type shell, gas water heater and plug-in type shell processing method

Technical Field

The application relates to the technical field of heat supply, in particular to a plug-in type shell, a gas water heater and a plug-in type shell processing method.

Background

Gas water heaters are a relatively common type of heating equipment that transfers heat to cold water flowing through a heat exchanger by means of gas combustion heating to produce hot water. In order to install structural components such as a heat exchanger, a burner, a water tank and the like, the existing gas water heater generally adopts a metal plate machined part as a bottom shell component, and the bottom shell component comprises a bottom shell main body, an upper end plate, a lower end plate, a left side plate and a right side plate which are integrally connected through welding or riveting. In the actual processing process of the bottom shell assembly, because of more structural members, the bottom shell main body, the upper end plate, the lower end plate, the left side plate and the right side plate are required to be manually aligned respectively, so that the accurate positioning between the adjacent structural members is ensured; in the process of welding or riveting, because the working procedures are more, the production efficiency is low, and the matching tolerance exists in each structural part, so that after the bottom shell assembly is welded or riveted, the four side edges of the assembly surface of the bottom shell assembly are usually not flush enough, and the sealing performance is further reduced. If the appearance quality is to be improved, the relative fixation between the adjacent structural members is to be kept all the time in the welding or riveting process, so that the deformation after welding or riveting is prevented, the degree of automation is low, the labor cost is further increased, and the production efficiency is reduced.

Disclosure of Invention

The first technical problem to be solved by the application is to provide a plug-in type shell which has a simple structure, can be processed in batches by adopting automatic processing equipment, has a smooth appearance and good sealing performance.

The second technical problem to be solved by the application is to provide the gas water heater which is provided with the plug-in type shell and has the advantages of low processing cost and good sealing performance.

The third technical problem to be solved by the application is to provide a plug-in type body processing method which is used for processing a plug-in type shell, has higher automation degree, can further reduce labor cost and improves production efficiency.

The first technical problem is solved by the following technical scheme:

providing a plug-in housing comprising:

a bottom case;

the first end plates and the second end plates are arranged around the bottom shell to form a containing cavity;

one of the first end plate and the second end plate is provided with a plug hole, the other one of the first end plate and the second end plate is provided with plug teeth, the plug teeth are correspondingly matched with the plug holes in a plug manner, and one side wall of each plug tooth is abutted to the first end plate or the second end plate.

Compared with the background technology, the plug-in type shell has the following beneficial effects: the first end plate and the second end plate are integrally formed with the bottom shell, so that the first end plate and the second end plate are arranged around the bottom plate in a surrounding mode, bending operation is only needed, only the dimensional accuracy and the cutting position accuracy of plate blanking are guaranteed, the relative positions among the first end plate, the second end plate and the bottom shell do not need to be manually and repeatedly adjusted, the first end plate, the second end plate and the bottom shell do not need to be positioned by manual assistance in the machining process, the automation degree is high, and the production efficiency is further improved; moreover, no connecting gaps exist between the first end plate and the bottom shell and between the second end plate and the bottom shell, so that the sealing performance and the waterproof performance of the plug-in type shell are improved; the plugging teeth penetrate through the plugging holes and are reversely bent, so that one side wall of the plugging teeth is abutted against the second end plate, part of the plugging holes can be plugged by the plugging teeth, the sealing performance between the first end plate and the second end plate is further improved, reliable connection between the first end plate and the second end plate can be realized, and looseness cannot be generated between the first end plate and the second end plate; moreover, the operation procedures of inserting and bending the inserting teeth are simple, the requirements on machining precision and fit tolerance between the first end plate, the second end plate and the bottom shell are low, the automation degree is high, automatic machining equipment can be adopted for batch machining, the production efficiency is improved, and the labor cost is reduced. Compared with a welded or riveted structure, the plug-in type shell provided by the embodiment of the application has no welding slag, riveting burrs and other process residues, so that the whole shell is attractive and smooth.

In one embodiment, the first end plate or the second end plate is provided with a first turning plate formed by bending, the plugging holes are formed at the bending positions of the first turning plate, and the plugging holes are uniformly arranged at intervals.

In one embodiment, the first turning plate is attached to the outer side of the first end plate or the second end plate, and one side wall of the plug-in tooth abuts against the first turning plate.

In one embodiment, the plugging tooth comprises an extending transition section, a reverse bending section and a crimping section which are sequentially arranged, the crimping section is used for crimping the first end plate or the second end plate through the reverse bending section, and the extending transition section extends towards a direction away from the crimping section so as to plug the plugging hole.

In one embodiment, the first end plate or the second end plate further comprises a lapping tooth, the lapping tooth is disposed on an edge of the plugging hole away from the plugging tooth, and the lapping tooth is in pressure connection with the plugging tooth to block the plugging hole.

In one embodiment, the first end plate or the second end plate is provided with a sinking step groove facing the accommodating cavity, and the inserting tooth is accommodated in the sinking step groove.

In one embodiment, the first end plate or the second end plate is provided with a second turning plate formed by bending, the second turning plate is attached to the inner side of the first end plate, and the plugging teeth are arranged on the edge of the second turning plate so as to penetrate through the corresponding plugging holes.

The second technical problem is solved by the following technical scheme:

the utility model provides a gas heater, including above-mentioned plug-in type casing, still include burning heat transfer subassembly and front panel, burning heat transfer subassembly set up in the holding intracavity of plug-in type casing, the front panel can dismantle connect in plug-in type casing in order to seal the holding chamber.

Compared with the background technology, the gas water heater has the following beneficial effects: the gas water heater adopts the plug-in type shell, the first end plate and the second end plate are integrally formed with the bottom shell, manual repeated adjustment and alignment are not needed in the assembly process, and the degree of automation is high; the first end plate and the second end plate are fixed and connected through the insertion cooperation of the insertion teeth and the insertion holes, the insertion and bending operation procedures of the insertion teeth are simple, the requirements on machining precision and fit tolerance between the first end plate, the second end plate and the bottom shell are low, the degree of automation is high, automatic machining equipment can be adopted for batch machining, the production efficiency is improved, and the labor cost is reduced. There is not the connection gap between first end plate, second end plate and the drain pan, and the grafting tooth can shutoff spliced eye for gas heater's sealing performance is better, effectively protects the burning heat transfer subassembly in the holding chamber.

The third technical problem is solved by the following technical scheme:

the plug-in type shell processing method is used for processing the plug-in type shell and comprises the following steps of:

s1, blanking plates to form a bottom shell, two first end plates and two second end plates which are connected into a whole, wherein the two first end plates and the two second end plates are respectively connected with four sides of the bottom shell;

s2, machining one of the first end plate and the second end plate to form a plug hole, and machining the other end plate to form plug teeth;

s3, respectively turning the two second end plates towards a first direction, respectively turning the two first end plates towards the first direction, and simultaneously aligning the plug hole with the plug teeth so that the plug teeth are inserted into the plug hole;

and S4, bending the inserting teeth to enable one side wall of the inserting teeth to abut against the first end plate or the second end plate.

Compared with the background technology, the plug-in type shell processing method has the following beneficial effects: the plug-in type shell processing method comprises the steps of forming an integrated connecting structure of a first end plate, a second end plate and a bottom shell through blanking, respectively bending the first end plate and the second end plate to enable plug-in teeth to be inserted into plug holes, and enabling the bent plug-in teeth to abut against the first end plate or the second end plate, so that reliable connection between the first end plate and the second end plate can be achieved, and the plug-in type shell has the advantage of good sealing performance; the blanking and bending processes do not need manual adjustment and positioning, bending equipment is adopted and can be completed by means of a die, the process is simple, implementation is easy, the automation degree is higher, the labor cost can be further reduced, and the production efficiency is improved.

In one embodiment, in the step S2, the first end plate is processed to form a socket hole, and the second end plate is processed to form a socket tooth, and after the step S2 and before the step S3, the method further includes the following steps: the first end plate is bent towards the first direction to form a first turning plate, or the second end plate is bent towards the first direction to form a second turning plate.

In one embodiment, the step S4 specifically includes the following steps:

the step S4 specifically includes the following steps:

s41, crimping the grafting teeth to transition to the first end plate to form an extension transition section so as to block the grafting hole;

s41, reversely bending the free end of the extension transition section to form a reverse bending section;

and step S42, crimping the free end of the reverse bending section to form a crimping section to attach the second end plate.

In one embodiment, before the step S4, the method further includes the following steps: in the step S4, the inserting teeth are bent to enable the inserting teeth to be accommodated in the sinking grooves, and a side wall of the inserting teeth abuts against the first end plate or the second end plate.

In one embodiment, the step S2 further includes the following steps: cutting the first end plate or the second end plate to form the inserting hole, wherein lap teeth are reserved on one side in the inserting hole; correspondingly, the step S4 further comprises the following steps: and bending the lap joint teeth and crimping the lap joint teeth on the plug joint teeth so as to seal the plug joint holes.

Drawings

Fig. 1 is a schematic structural diagram of a plug-in housing according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of a plug-in housing according to an embodiment of the application when the plug-in housing is unfolded;

fig. 3 is a schematic structural diagram of a plug-in housing according to a first embodiment of the present application;

FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;

FIG. 5 is an enlarged schematic view of a part of a plugging tooth according to a first embodiment of the present application;

fig. 6 is a schematic structural diagram III of a plug-in housing according to the first embodiment of the present application;

FIG. 7 is a partially enlarged schematic illustration of portion B of FIG. 6;

FIG. 8 is a schematic structural view of a socket tooth received in a stepped slot according to a first embodiment of the present application;

fig. 9 is a schematic structural diagram of a plug-in housing according to a second embodiment of the present application;

fig. 10 is a schematic structural diagram of a plug-in housing according to a second embodiment of the present application;

fig. 11 is a step diagram of a method for processing a plug-in type housing according to a fourth embodiment of the present application;

fig. 12 is a second step diagram of a method for processing a plug-in type housing according to a fourth embodiment of the present application;

FIG. 13 is an enlarged partial schematic view of portion C of FIG. 12;

fig. 14 is a third step diagram of a method for processing a plug-in type housing according to a fourth embodiment of the present application;

fig. 15 is a step diagram of a plug-in type housing processing method according to a fourth embodiment of the present application;

FIG. 16 is a partially enlarged schematic illustration of portion D of FIG. 15;

fig. 17 is a step diagram five of a plug-in type housing processing method according to a fourth embodiment of the present application;

fig. 18 is a sixth step diagram of a method for processing a plug-in type housing according to the fourth embodiment of the present application.

Description of the reference numerals:

1. a bottom case; 11. a receiving chamber; 2. a first end plate; 21. a plug hole; 22. a first flap; 23. lapping teeth; 3. a second end plate; 31. inserting teeth; 311. extending the transition section; 312. a reverse bending section; 313. a crimping section; 32. a second flap; 4. a sinking step groove.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Example 1

An embodiment of the present application provides a plug-in housing, as shown in fig. 1 to 8, the plug-in housing includes a bottom shell 1, two first end plates 2 disposed opposite to each other, and two second end plates 3 disposed opposite to each other. The first end plate 2 and the second end plate 3 are integrally formed with the bottom shell 1, and the structure of the plug-in type shell after being unfolded is shown in figure 2; the connection structure of the first end plate 2, the second end plate 3, and the bottom chassis 1 may be formed by plate blanking, which includes but is not limited to stamping, laser cutting, and the like. Bending the two first end plates 2 and the two second end plates 3, so that the first end plates 2 and the second end plates 3 are arranged around the bottom shell 1 to form a containing cavity 11, as shown in fig. 1; the accommodating chamber 11 is used for installing other structural components of the gas water heater. To this kind of integral type's structure, realize that first end plate 2 and second end plate 3 enclose to establish around bottom plate 1, only need bend the operation, as long as guarantee the dimensional accuracy and the cutting position precision of panel unloading, do not need the manual work to adjust repeatedly the relative position between first end plate 2, second end plate 3 and the drain pan 1, also do not need to adopt the manual work to assist in the course of working to fix a position between first end plate 2, second end plate 3 and the drain pan 1, degree of automation is higher, and then improved production efficiency. Moreover, no connecting gap exists between the first end plate 2 and the bottom shell 1 and between the second end plate 3 and the bottom shell 1, so that the sealing performance and the waterproof performance of the plug-in type shell are improved.

One of the first end plate 2 and the second end plate 3 is provided with a plug hole 21, the other is provided with a plug tooth 31, the plug tooth 31 and the plug hole 21 are correspondingly matched in a plug manner, and one side wall of the plug tooth 31 is abutted with the first end plate 2 or the second end plate 3. In the embodiment of the application, a plurality of plug holes 21 are formed in the first end plate 2, a plurality of plug teeth 31 are formed in the second end plate 3, the plug holes 21 and the plug teeth 31 are in one-to-one correspondence, the plug teeth 31 penetrate through the plug holes 21 and are bent to abut against the first end plate 2 or the second end plate 3, and therefore the plug teeth 31 at least plug part of the plug holes 21. The number, geometry and arrangement of the inserting teeth 31 can be designed according to the actual working condition, and are not limited by the drawings of the embodiment. In other embodiments, a plurality of plugging teeth 31 may be provided on the first end plate 2, and a plurality of plugging holes 21 may be provided on the second end plate 3, which is within the scope of the present application.

In the embodiment of the application, the plugging teeth 31 on the second end plate 3 penetrate through the plugging holes 21, are reversely bent and abutted against the second end plate 3, and can plug part of the plugging holes 21, so that the sealing performance between the first end plate 2 and the second end plate 3 is improved. Of course, after the plugging teeth 31 on the second end plate 3 pass through the plugging holes 21, they can also be bent and abutted against the first end plate 2, and the relative fixation and connection between the first end plate 2 and the second end plate 3 can also be achieved. The plug-in matching structure of the plug-in teeth 31 and the plug-in holes 21 not only can realize reliable connection of the first end plate 2 and the second end plate 3, but also can prevent looseness between the first end plate 2 and the second end plate 3; moreover, the plugging and bending operation procedures of the plugging teeth 31 are simple, the requirements on machining precision and fit tolerance between the first end plate 2, the second end plate 3 and the bottom shell 1 are low, the automation degree is high, and the automatic machining equipment can be adopted for batch machining, so that the production efficiency is improved, and the labor cost is reduced. Compared with a welded or riveted structure, the plug-in type shell provided by the embodiment of the application has no welding slag, riveting burrs and other process residues, so that the whole shell is attractive and smooth.

It should be noted that, in the present embodiment, the first end plate 2 and the second end plate 3 only represent names of different side plates, and in fact, the first end plate 2 and the second end plate 3 may be the same or different in terms of appearance or dimension and other process parameters, and embodiments of the present application are not limited in particular. In the present embodiment of the application, the length of the first end plate 2 is longer than that of the second end plates 3, and when the plug-in type housing is assembled to the whole equipment, the two second end plates 3 serve as an upper end plate and a lower end plate, and the two first end plates 2 serve as a left end plate and a right end plate which are vertically arranged. The plug-in type shell of the embodiment of the application not only can be applied to gas water heaters, but also can be applied to other fields, such as electronic products, and the like, and the plug-in type shell is within the protection scope of the application.

In an embodiment, the first end plate 2 includes a first turning plate 22 formed by bending, as shown in fig. 3 and fig. 4, the first turning plate 22 is attached to the outer side of the second end plate 3, the plugging holes 21 are disposed at the bending position of the first turning plate 22, and the plurality of plugging holes 21 are uniformly disposed at intervals. The first turning plate 22 not only can reduce the gap between the first end plate 2 and the second end plate 3, but also can increase the stability of connection between the first end plate 2 and the second end plate 3, thereby increasing the overall structural strength of the plug-in type housing.

More specifically, the insertion tooth 31 is bent to abut against the first flap 22, thereby increasing the crimping force to the first flap 22, so that the first flap 22 is tightly crimped on the outer side of the second end plate 3, preventing the first flap 22 from being deformed or loosened. Moreover, the second end plate 3 is used as an upper end plate and a lower end plate of the plug-in type shell, after the plug-in type shell is assembled to the whole equipment, the first turning plate 22 and the plug-in teeth 31 are respectively positioned on the upper side and the lower side of the plug-in type shell, so that the concealment is better, and the overall attractiveness of the plug-in type shell is further improved.

In an embodiment, the plugging tooth 31 includes an extension transition section 311, a reverse bending section 312, and a crimping section 313 sequentially disposed, as shown in fig. 5, the crimping section 313 is crimped to the second end plate 3 by the reverse bending section 312, and the extension transition section 311 extends toward the first end plate 2 to plug the plugging hole 21. The extension transition section 311 extends towards the first end plate 2, so that the plugging teeth 31 form a certain inclined shape, so that the plugging holes 21 can be more tightly plugged, and the reverse bending section 312 and the crimping section 313 are matched, so that the structure of the plugging teeth 31 has better locking property.

Still further, the first end plate 2 also comprises overlapping teeth 23, as shown in fig. 6 and 7; the overlap teeth 23 are arranged at the insertion holes 21, and the overlap teeth 23 are pressed against the insertion teeth 31 to block the insertion holes 21. When the plug hole 21 is machined, the redundant plate is not removed, only the shape of the plug hole 21 is cut, and when the first turning plate 22 is bent to form the plug hole 21, the lap teeth 23 are reserved on one side in the plug hole 21. Furthermore, in order to avoid blocking the insertion of the insert teeth 31 into the insertion hole 21 by the overlap teeth 23, the overlap teeth 23 may be bent in a direction away from the insert teeth 31, and after the insert teeth 31 are inserted into the insertion hole 21 and reversely bent to abut against the second end plate 3, the overlap teeth 23 are bent, so that the overlap teeth 23 are pressed against the insert teeth 31 to block the insertion hole 21, and thus, the sealing performance is better along the length direction of the insertion hole 21.

In one embodiment, the first end plate 2 and/or the second end plate 3 are provided with a stepped groove 4 facing the accommodating chamber 11, as shown in fig. 8. The inserting teeth 31 are accommodated in the sinking step grooves 4 and do not protrude from the accommodating cavity 11. In the embodiment of the application, the stepped groove 4 is disposed on the second end plate 3, and the first turning plate 22 and the plugging teeth 31 are both accommodated in the stepped groove 4, preferably, the outer side wall of the plugging teeth 31 is flush with the edge of the stepped groove 4. The sinking step groove 4 provides a containing space for the inserting tooth 31, so that the inserting tooth 31 is protected, the inserting type shell keeps the uniformity and fluency of appearance, and the attractive damage caused by the protrusions is reduced. The plug-in type shell has compact structure and neat appearance; moreover, the sinking step groove 4 enables the inserting teeth 31 not to protrude out of the outer surface of the inserting type shell, and deformation and damage caused by collision in the process of transportation or use are not easy to happen.

Example two

The second embodiment of the present application provides a plug-in type housing, which has the same bottom shell 1, two first end plates 2 arranged opposite to each other, and two second end plates 3 arranged opposite to each other as in the first embodiment; the first end plate 2 and the second end plate 3 are integrally formed with the bottom shell 1, and the first end plate 2 and the second end plate 3 are arranged around the bottom shell 1 in a surrounding manner to form a containing cavity 11; the first end plate 2 is provided with a plurality of plug holes 21, the second end plate 3 is provided with a plurality of plug teeth 31, the plug holes 21 and the plug teeth 31 are in one-to-one correspondence, the plug teeth 31 penetrate through the plug holes 21 and are bent to be abutted against the first end plate 2 or the second end plate 3, and therefore the plug teeth 31 at least plug part of the plug holes 21.

The second embodiment of the present application is different in that, as shown in fig. 9 and 10, the second end plate 3 includes a second turning plate 32 formed by bending, the second turning plate 32 is attached to the inner side of the first end plate 2, and the plugging teeth 31 are disposed at the edge of the second turning plate 32 so as to pass through the plugging holes 21. The second turns over the inboard of board 32 laminating first end plate 2, and grafting tooth 31 is bent to the outside of plug-in type casing by holding intracavity 11, and the second turns over the inside at the plug-in type casing is hidden to the partial structure of grafting tooth 31, this makes the outward appearance of plug-in type casing more clean and tidy, pleasing to the eye.

It should be noted that, when the second end plate 3 of the present embodiment is processed, two sides of the second end plate 3 need to be bent to form the plugging teeth 31 and the second turning plate 32 respectively; when the plug-in type shell is assembled, the second end plate 3 is bent to be vertically arranged around the upper periphery of the bottom shell 1, as shown in fig. 9; then, the first end plate 2 is bent to vertically surround the upper periphery of the bottom shell 1, and the plugging holes 21 are clamped with the plugging teeth 31, as shown in fig. 10.

Of course, in other embodiments, it is within the scope of the present application to provide the second flap 32 and the plugging teeth 31 on the first end plate 2 and the plurality of plugging holes 21 on the second end plate 3.

Example III

The third embodiment of the application provides a gas water heater, which comprises the plug-in type shell in the first embodiment, a combustion heat exchange assembly and a front panel, wherein the combustion heat exchange assembly is arranged in a containing cavity 11 of the plug-in type shell, and the front panel is detachably connected with the plug-in type shell to seal the containing cavity 11. The combustion heat exchange assembly comprises a combustor, a heat exchanger, a smoke collecting hood, a smoke exhaust pipe and other structures, wherein the combustor is used for providing heat for cold water flowing through the heat exchanger through gas combustion, and the smoke collecting hood is used for collecting heat exchanged smoke and exhausting the smoke through the smoke exhaust pipe.

According to the gas water heater provided by the embodiment of the application, the first end plate 2 and the second end plate 3 of the plug-in type shell are integrally formed with the bottom shell 1, manual repeated adjustment and alignment are not needed in the assembly process, and the automation degree is high; the first end plate 2 and the second end plate 3 are fixed and connected through the cooperation of the inserting teeth 31 and the inserting holes 21, the inserting and bending operation procedures of the inserting teeth 31 are simple, the requirements on machining precision and the cooperation tolerance between the first end plate 2, the second end plate 3 and the bottom shell 1 are low, the automation degree is high, automatic machining equipment can be adopted for batch machining, the production efficiency is improved, and the labor cost is reduced. There is not the connection gap between first end plate 2, second end plate 3 and the drain pan 1, and grafting tooth 31 can shutoff spliced eye 21 for gas heater's sealing performance is better, effectively protects the burning heat transfer subassembly in the holding chamber 11.

Example IV

The fourth embodiment of the application provides a method for processing a plug-in type housing, which is used for processing the plug-in type housing in the first embodiment, as shown in fig. 11-18; the plug-in type shell processing method comprises the following steps:

step S1, blanking the plates to form a bottom shell 1, two first end plates 2 and two second end plates 3 which are connected into a whole, wherein the two first end plates 2 and the two second end plates 3 are respectively connected with four sides of the bottom shell 1; in this step, the size and shape of the plate are not limited, and the plate is first stretched, trimmed and punched before blanking, and the redundant plate is removed to obtain the required profile, where the blanking modes include, but are not limited to, stamping, laser cutting, and the like, and the two first end plates 2 and the two second end plates 3 are respectively connected with four sides of the bottom shell 1.

Step S2, machining one of the first end plate 2 and the second end plate 3 to form the plugging hole 21, and machining the other to form the plugging tooth 31;

step S3, the two second end plates 3 are respectively turned over in the first direction, the two first end plates 2 are respectively turned over in the first direction, and the plugging holes 21 are aligned with the plugging teeth 31, so that the plugging teeth 31 are inserted into the plugging holes 21. In this step, the sequence of folding the second end plate 3 and the first end plate 2 is determined according to the specific structure, that is, one of the second end plate 3 and the first end plate 2 having the insert teeth 31 is folded first, and one of the insert holes 21 is folded. For ease of understanding, as shown in fig. 11, the Z direction in the drawing is the first direction, that is, the direction perpendicular to the upward direction of the bottom case 1 is the first direction; in this embodiment, two second end plates 3 are bent in a first direction perpendicular to the bottom case 1, the second end plates 3 are provided with plugging teeth 31, so that the second end plates 3 are arranged around the upper periphery of the bottom case 1, then two first end plates 2 are bent in a first direction perpendicular to the bottom case 1, and the first end plates 2 are provided with plugging holes 21; the relative position between the plugging hole 21 and the plugging teeth 31 can be ensured to be accurate without repeated alignment and positioning in the bending process, and the plugging teeth 31 can be easily inserted into the plugging hole 21, as shown in fig. 12 and 13. In this step, the second end plate 3 is bent first, and then the first end plate 2 is bent, so that interference of the plugging teeth 31 on the second end plate 3 to the bending operation of the first end plate 2 can be avoided.

Step S4, bending the plugging teeth 31 to make one side wall of the plugging teeth 31 contact with the first end plate 2 or the second end plate 3. In this embodiment, the plugging teeth 31 are reversely bent, so that the plugging teeth 31 abut against the second end plate 3, reliable connection between the first end plate 2 and the second end plate 3 is achieved, and looseness is not generated between the first end plate 2 and the second end plate 3.

The plug-in type shell processing method provided by the fourth embodiment of the application is used for processing the plug-in type shell in the first embodiment or the second embodiment, the plug-in type shell forms an integrated connecting structure of the first end plate 2, the second end plate 3 and the bottom shell 1 through blanking, the first end plate 2 and the second end plate 3 are respectively bent to realize that the plug-in teeth 31 are inserted into the plug-in holes 21, and then the bent plug-in teeth 31 are abutted against the first end plate 2 or the second end plate 3, so that reliable connection between the first end plate 2 and the second end plate 3 can be realized, and the plug-in type shell has the advantage of good sealing performance; the blanking and bending processes do not need manual adjustment and positioning, bending equipment is adopted and can be completed by means of a die, the process is simple, implementation is easy, the automation degree is higher, the labor cost can be further reduced, and the production efficiency is improved.

Preferably, the method further comprises the following steps after the step S2 and before the step S3: either one of the first end plate 2 and the second end plate 3, which has one of the insertion holes 21, is bent in the first direction to form the first flap 22, or the other one of the first end plate 2 and the second end plate 3, which has one of the insertion teeth 31, is bent in the first direction to form the second flap 32. When the first turning plate 22 is arranged to abut against the second end plate 3 to improve the sealing performance, when the processing of the plugging hole 21 is required to be completed, two sides of the first end plate 2 are bent towards the first direction along the width direction of the first end plate 2, and the first turning plate 22 formed by bending is perpendicular to the bottom shell 1, as shown in fig. 11; or, when the second turning plate 32 is provided to improve the sealing performance, when the processing of the plugging teeth 31 is completed, two sides of the second end plate 3 are bent towards the first direction along the width direction of the second end plate 3, the second turning plate 32 formed by bending is perpendicular to the bottom shell 1, and then, step S3 is performed: first, the second end plate 3 is bent in the first direction perpendicular to the bottom case 1 (refer to fig. 9). In actual processing, the first and second flaps 22 and 32 described above should be used alternatively.

Preferably, the step S4 specifically includes the following steps:

step S41, the crimping plug teeth 31 are transited to the first end plate 2 or the second end plate 3 to form an extension transition section 311 so as to block the plug holes 21; the extended transition 311 increases the sealing properties of the mating teeth 31 as shown in fig. 14;

step S42, reversely bending the free end of the extension transition section 311 to form a reverse bending section 312;

step S43, crimping the free end of the reverse bending section 312 to form a crimping section 313 to attach the second end plate 3 or the first end plate 2; the crimp segments 313 increase the contact area with the second end plate 3 or the first end plate 2 to improve the fastening performance of the insert teeth 31. In the present embodiment, in step S2, the first end plate 2 is processed to form the insertion hole 21, and the second end plate 3 is processed to form the insertion tooth 31; correspondingly, in step S44, the crimp teeth 31 transition to the first end plate 2 to form an extension transition 311, and in step S43, the free ends of the reverse crimp segments 312 are crimped to form a crimp segment 313 to engage the second end plate 3.

Preferably, the method further comprises the following steps before the step S4: in step S4, the plugging teeth 31 are bent to accommodate the plugging teeth 31 in the stepped groove 4 and abut against the first end plate 2 or the second end plate 3. The sinking step groove 4 can accommodate the inserting teeth 31, so that the inserting teeth 31 are not protruded out of the first end plate 2 or the second end plate 3, and the appearance of the inserting type shell is attractive. The stamping processing stepped groove 4 can be arranged in the step S2 or the step S3, and particularly can be adjusted according to processing equipment, so that the flexibility is high.

Preferably, in step S2, the method further includes the following steps: cutting the first end plate 2 to form a plug hole 21, wherein one side in the plug hole 21 is reserved with a lap joint tooth 23; accordingly, the following steps are further included after step S4: the overlap tooth 23 is bent and crimped onto the plug tooth 31 to close the plug hole 21. When the plug hole 21 is cut, the three sides inside the plug hole 21 can be cut, and the other side is reserved with the lap teeth 23; therefore, after step S4, the overlapping teeth 23 may be bent and crimped on the plugging teeth 31, and the overlapping teeth 23 may seal the plugging holes 21 between the overlapping teeth 23 and the plugging teeth 31, thereby further improving the sealing performance. In this step, in order to avoid blocking the insertion of the insert teeth 31 into the insertion holes 21 by the overlap teeth 23, the overlap teeth 23 may be first bent in a direction away from the insert teeth 31, as shown in fig. 15 and 16; after the plugging teeth 31 are inserted into the plugging holes 21 and reversely bent to be abutted against the second end plate 3, the lapping teeth 23 are bent, as shown in fig. 17, the lapping teeth 23 are flattened to be in the same plane with the first end plate 2, and then the lapping teeth 23 are bent to be in press connection with the plugging teeth 31 so as to plug the plugging holes 21, as shown in fig. 18; in this way, interference of the landing teeth 23 with the mating teeth 31 can be avoided.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present application, which are described in some detail and are not intended to limit the scope of the present application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (13)

1. Plug-in type casing, its characterized in that includes:

a bottom case (1);

the device comprises two first end plates (2) and two second end plates (3) which are oppositely arranged, wherein the first end plates (2), the second end plates (3) and the bottom shell (1) are integrally formed, and the first end plates (2) and the second end plates (3) are arranged around the bottom shell (1) in a surrounding manner to form a containing cavity (11);

one of the first end plate (2) and the second end plate (3) is provided with a plug hole (21), the other one is provided with a plug tooth (31), the plug tooth (31) and the plug hole (21) are correspondingly in plug fit, and one side wall of the plug tooth (31) is in butt joint with the first end plate (2) or the second end plate (3).

2. Plug-in type housing according to claim 1, characterized in that the first end plate (2) or the second end plate (3) is provided with a first turning plate (22) formed by bending, the plug-in holes (21) are arranged at the bending position of the first turning plate (22), and a plurality of plug-in holes (21) are uniformly arranged at intervals.

3. Plug-in housing according to claim 2, characterized in that the first flap (22) engages the outside of the first end plate (2) or the second end plate (3), a side wall of the plug-in tooth (31) abutting the first flap (22).

4. Plug-in housing according to claim 1, characterized in that the plug-in teeth (31) comprise an extension transition section (311), a reverse bending section (312) and a crimping section (313) arranged in sequence, the crimping section (313) crimping the first end plate (2) or the second end plate (3) by means of the reverse bending section (312), the extension transition section (311) extending in a direction away from the crimping section (313) for plugging the plug-in hole (21).

5. Plug-in housing according to claim 1, characterized in that the first end plate (2) or the second end plate (3) further comprises a landing tooth (23), the landing tooth (23) is arranged at an edge of the plug-in hole (21) remote from the plug-in tooth, and the landing tooth (23) is crimped onto the plug-in tooth (31) to block the plug-in hole (21).

6. Plug-in housing according to any one of claims 1 to 5, characterized in that the first end plate (2) or the second end plate (3) is provided with a stepped groove (4) facing the receiving cavity (11), the plug-in teeth (31) being received in the stepped groove (4).

7. Plug-in housing according to any one of claims 1 to 5, characterized in that the first end plate (2) or the second end plate (3) has a second flap (32) formed by bending, the second flap (32) fits inside the first end plate (2), and the plug-in teeth (31) are arranged at the edge of the second flap (32) so as to pass through the corresponding plug-in holes (21).

8. The gas water heater is characterized by comprising the plug-in type shell as claimed in any one of claims 1-7, and further comprising a combustion heat exchange assembly and a front panel, wherein the combustion heat exchange assembly is arranged in a containing cavity (11) of the plug-in type shell, and the front panel is detachably connected with the plug-in type shell to seal the containing cavity (11).

9. A method for machining a plug housing according to any one of claims 1 to 7, comprising the steps of:

s1, blanking plates to form a bottom shell (1), two first end plates (2) and two second end plates (3) which are connected into a whole, wherein the two first end plates (2) and the two second end plates (3) are respectively connected with four sides of the bottom shell (1);

step S2, machining one of the first end plate (2) and the second end plate (3) to form a plug hole (21), and machining the other to form plug teeth (31);

s3, respectively turning the two second end plates (3) towards a first direction, respectively turning the two first end plates (2) towards the first direction, and simultaneously aligning the plug-in holes (21) with the plug-in teeth (31) so that the plug-in teeth (31) are inserted into the plug-in holes (21);

and S4, bending the inserting teeth (31) to enable one side wall of the inserting teeth (31) to be abutted against the first end plate (2) or the second end plate (3).

10. A plug housing machining method according to claim 9, characterized in that in the step S2, the first end plate (2) is machined to form a plug hole (21), the second end plate (3) is machined to form a plug tooth (31), and after the step S2, before the step S3, the steps of: -bending the first end plate (2) towards the first direction to form a first flap (22), or-bending the second end plate (3) towards the first direction to form a second flap (32).

11. The plug-in type housing processing method according to claim 10, wherein the step S4 specifically includes the steps of:

s41, crimping the plug teeth (31) to transition to the first end plate (2) to form an extension transition section (311) so as to block the plug holes (21);

s42, reversely bending the free end of the extension transition section (311) to form a reverse bending section (312);

and step S43, crimping the free end of the reverse bending section (312) to form a crimping section (313) to be attached to the second end plate (3).

12. The method of manufacturing a plug-in type housing according to claim 9, further comprising the step of, prior to said step S4: stamping the first end plate (2) or the second end plate (3) to form a sinking groove (4), bending the inserting teeth (31) in the step S4 to enable the inserting teeth (31) to be contained in the sinking groove (4), and enabling one side wall of the inserting teeth (31) to be abutted against the first end plate (2) or the second end plate (3).

13. The plug-in type housing processing method according to claim 9, further comprising the step of, in the step S2: cutting the first end plate (2) or the second end plate (3) to form the plug hole (21), wherein a lap joint tooth (23) is reserved on one side in the plug hole (21); correspondingly, the step S4 further comprises the following steps: the lap joint teeth (23) are bent and pressed on the plug joint teeth (31) so as to seal the plug joint holes (21).