Portable heater with quick-release pipeline

Abstract

The utility model discloses a portable heater with a quick release pipeline, and relates to the field of heating equipment.The portable heater comprises a box body and an air heater arranged in the box body, the air heater comprises an oil inlet pipe and further comprises an oil conveying pipe, and a first two-way self-sealing quick connector is arranged between the oil inlet pipe and the oil conveying pipe; the first bidirectional self-sealing quick connector comprises a first connector and a second connector, the first connector is communicated with the oil inlet pipe, and the second connector is communicated with the oil conveying pipe. The heater has the effects that the movement convenience of the heater is improved, the installation convenience of the oil conveying pipe of the heater is improved, and the situation that air and impurities enter the oil inlet pipe is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heating equipment, in particular to a portable heater with quick-release pipeline. BACKGROUND

[0002] With the increasing improvement of people's quality of life, outdoor camping, exploration and leisure activities gradually become an important way for modern people to pursue nature and relax. In these activities, the tent as the temporary residence of the camper, its warmth and heating problem is particularly important. Especially in cold season or high altitude area, the temperature in the tent is often very low, and if there is no effective heating measures, the safety and comfort of the camper will be seriously affected.

[0003] The existing patent with publication number CN201355089Y discloses a portable heater, which is composed of a box body, an air heater, an oil tank and an electrical control box. The air heater is connected with the oil tank, the electrical control box is connected with the air heater, the air heater extends a warm air cloth barrel through the box body, and the air heater also has an air inlet pipe and an air outlet pipe. In actual application, the air heater extracts fuel oil in the oil tank, the fuel oil is burned to heat the air, and the hot air can be sent to the tent through the warm air cloth barrel.

[0004] At present, some heaters no longer configure an oil tank in the interior, but extract oil in the vehicle oil tank through an oil pipe to supply fuel oil to the air heater. However, the oil pipe for taking oil from the outside or the vehicle oil tank is difficult to be detached on the heater, and the heater is inconvenient to carry, which needs to be improved. CONTENT OF THE INVENTION

[0005] In order to improve the problem that the oil pipe for taking oil from the outside or the vehicle oil tank on the heater is difficult to be detached, and the heater is inconvenient to carry in the related technology, the present application provides a portable heater with quick-release pipeline.

[0006] The portable heater with quick-release pipeline provided by the present application adopts the following technical scheme:

[0007] The portable heater with quick-release pipeline comprises a box body and an air heater arranged in the box body. The air heater comprises an oil inlet pipe and an oil outlet pipe. A first bidirectional self-sealing quick connector is arranged between the oil inlet pipe and the oil outlet pipe. The first bidirectional self-sealing quick connector comprises a first connector and a second connector. The first connector is in communication with the oil inlet pipe, and the second connector is in communication with the oil outlet pipe.

[0008] By adopting the technical scheme, the first connector and the second connector of the first bidirectional self-sealing quick connector are disconnected when idle, and the first connector and the second connector are self-sealed, thereby facilitating disassembly of the oil inlet pipe, improving the convenience of moving the heater, and reducing the occurrence of a large amount of air and sundries entering the oil inlet pipe.

[0009] Preferably, the first connector is fixed to the outer wall of the box.

[0010] By adopting the technical scheme, the first connector and the second connector are facilitated to be connected and separated.

[0011] Preferably, the first connector is located on the upper side of the box and is arranged upward, and the second connector is connected to the first connector from top to bottom.

[0012] By adopting the technical scheme, the first connector and the second connector are facilitated to be connected and separated.

[0013] Preferably, an oil pump is connected in series between the first connector and the oil inlet pipe, an oil inlet of the oil pump is communicated with the first connector, an oil outlet of the oil pump is communicated with the oil inlet pipe, and the oil inlet pipe is communicated with the first connector through the oil pump.

[0014] By adopting the technical scheme, the oil pump is used to suck fuel through the oil inlet pipe and supply the fuel to the oil inlet pipe, thereby ensuring normal fuel supply to the air heater.

[0015] Preferably, a rubber seat is fixed on the box, and the oil pump is fixed on the rubber seat.

[0016] By adopting the technical scheme, the rubber seat is used to buffer the oil pump and the box, thereby reducing the conduction of the vibration of the oil pump to the box.

[0017] Preferably, a sealing member for sealing the oil tank opening is connected to the oil inlet pipe, and the oil inlet pipe locally penetrates the sealing member.

[0018] By adopting the technical scheme, during the fuel supply process of the air heater, the side of the oil inlet pipe away from the second connector extends into the oil tank, and the oil tank opening can be sealed by the sealing member, thereby reducing the loss of oil in the oil tank and facilitating the safety of the oil.

[0019] Preferably, the oil inlet pipe comprises a transfer pipe, a second bidirectional self-sealing quick connector, and an oil suction pipe, the transfer pipe is communicated with the second connector, and the second bidirectional self-sealing quick connector is connected in series between the transfer pipe and the oil suction pipe.

[0020] The second bidirectional self-sealing quick connector comprises a third connector and a fourth connector, the third connector is communicated with one end of the transfer pipe away from the second connector, the fourth connector is communicated with the oil suction pipe, and the fourth connector penetrates the sealing element and is fixed with the sealing element.

[0021] By using the above technical scheme, when the independent oil tank is used, the oil suction pipe can be left in the independent oil tank through the second bidirectional self-sealing quick connector, the sealing element seals the oil tank opening, the fourth connector seals the oil suction pipe, and the two ends of the transfer pipe are sealed by the second connector and the third connector, so that the leakage of part of the oil can be reduced.

[0022] Preferably, the oil tank is detachably connected to the outside of the box body, one end of the oil suction pipe away from the fourth connector extends into the oil tank and sucks the fuel in the oil tank, and the sealing element seals the opening of the oil tank.

[0023] By using the above technical scheme, the oil supply operation of the air heater is realized.

[0024] Preferably, a hook is arranged on the outside of the box body, and an ear is arranged on the outer wall of the oil tank, and the ear is hooked and matched with the hook.

[0025] By using the above technical scheme, the installation and unloading operation of the oil tank is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is an axonometric view of the whole structure of the pipe connection structure of the embodiment;

[0027] Figure 2 It is an exploded view of the mounting seat structure of the embodiment;

[0028] Figure 3 It is an exploded view of the docking seat structure of the embodiment;

[0029] Figure 4 It is an axonometric view of the portable heater structure with quick-release pipeline of the embodiment;

[0030] Figure 5 It is a schematic view of the blocking net mounting structure of the embodiment;

[0031] Figure 6 It is a schematic view of the air heater mounting structure of the embodiment;

[0032] Figure 7 It is an exploded view of the air heater structure of the embodiment

[0033] Figure 8 It is a schematic view of the rubber seat and oil pump structure of the embodiment

[0034] Figure 9 The explosion schematic diagram mainly embodies the structure of the bypass opening and the oil delivery pipe of the present embodiment.

[0035] Figure 10 The explosion schematic diagram mainly embodies the structure of the oil delivery pipe of the present embodiment.

[0036] The reference signs: 1, mounting seat; 11, communication opening; 12, first magnetic attraction part; 121, magnetic block; 2, air pipe; 21, second magnetic attraction part; 211, butt joint seat; 2111, butt joint opening; 212, positioning wall surface; 3, box body; 31, first half box; 311, handle; 312, mounting support; 313, positioning surface; 314, rubber seat; 315, hook; 316, ventilation opening; 317, bypass opening; 32, second half box; 321, storage space; 322, blocking net; 323, knob bolt; 33, connecting piece; 4, air heater; 41, air inlet; 42, air outlet; 43, oil inlet pipe; 431, oil pump; 44, combustion-supporting air inlet; 441, air filter; 45, smoke outlet; 451, smoke outlet pipe; 452, heat insulation layer; 5, first bidirectional self-sealing quick connector; 51, first connector; 52, second connector; 6, oil delivery pipe; 61, transfer pipe; 62, second bidirectional self-sealing quick connector; 621, third connector; 622, fourth connector; 6221, sealing part; 623, oil extraction pipe; 7, oil tank; 71, hanging lug; 8, heat insulation seat; 81, smoke delivery pipe. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below in combination with the drawings.

[0038] In the related art, the air heater includes a fuel oil air heater. The fuel oil air heater is a device that uses fuel oil as energy to generate heat to heat air. It uses a fuel oil supply system to introduce fuel oil into a combustion chamber, ignites after mixing with air, and the high-temperature flame generated passes through a heat exchanger to transfer heat to air. The heated air is sent into the space that needs to be heated by a fan or a blower. Patent document with publication number CN105416006A discloses a highland type air heater, patent document with publication number CN213892111U discloses a double brushless motor combustion head parking fuel oil air heater, patent document with publication number CN211601101U discloses a parking air heating heater, and patent document with publication number CN117774609A discloses a fast preheating parking heater. These all belong to air heaters.

[0039] As a transition device of pipeline and pipeline connection, the bidirectional self-sealing quick connector improves the fluid leakage problem that may be caused by the traditional quick connector during disconnection and connection. Among them, the patent with the patent publication number CN213206896U discloses a bidirectional self-sealing quick connector, the patent with the patent publication number CN213776734U discloses a quick bidirectional self-sealing by the connector, and the patent with the patent publication number CN207145826U discloses a bidirectional self-sealing quick connector, which all belong to bidirectional self-sealing quick connectors.

[0040] The pipeline connection structure is disclosed.

[0041] Referring to Figure 1 and Figure 2 , a pipeline connection structure includes a mounting seat 1 and a vent pipe 2, the mounting seat 1 is provided with a communication port 11, the mounting seat 1 is provided with a first magnetic attraction member 12, one end of the vent pipe 2 is provided with a second magnetic attraction member 21, and the first magnetic attraction member 12 and the second magnetic attraction member 21 are magnetically attracted and matched, and the vent pipe 2 is communicated with the communication port 11. In actual application, the mounting seat 1 can be installed at the heating air outlet of the heating equipment, so that the heating air outlet of the heating equipment is communicated with the communication port 11, and the vent pipe 2 can be quickly installed through the first magnetic attraction member 12 and the second magnetic attraction member 21.

[0042] Referring to Figure 2 and Figure 3 , specifically, the first magnetic attraction member 12 is a magnetic block 121, the magnetic block 121 is embedded on the mounting seat 1, and the magnetic block 121 is provided with a plurality of magnetic blocks 121 around the communication port 11. In this embodiment, the magnetic block 121 is uniformly and spacedly provided with four magnetic blocks 121 around the communication port 11. The second magnetic attraction member 21 is a butt joint seat 211, the butt joint seat 211 is provided with a butt joint port 2111, the end of the vent pipe 2 close to the mounting seat 1 is communicated with the butt joint port 2111, and the butt joint seat 211 abuts against the mounting seat 1, and the magnetic block 121 and the butt joint seat 211 are magnetically attracted and matched. In this embodiment, the butt joint seat 211 is made of iron, preferably galvanized iron plate.

[0043] In order to facilitate the carrying of the vent pipe 2, the vent pipe 2 is a telescopic pipe, and preferably a telescopic aluminum foil pipe, which can heat and guide the airflow through the telescopic aluminum foil pipe.

[0044] It should be pointed out that the mounting seat 1 can be fixedly installed at the heating air outlet of the heating equipment by means of a countersunk head bolt.

[0045] The implementation principle of the pipeline connecting structure in the embodiment of the application is as follows: in actual application, the mounting seat 1 can be installed at the heating air outlet of the heating device, so that the heating air outlet of the heating device is in communication with the communication port 11; at this time, the docking seat 211 can be magnetically attracted to the mounting seat 1 through the magnetic block 121, so that the air pipe 2 and the heating air outlet of the heating device are in communication, and warm air can be supplied into the tent through the air pipe 2. When not in use, the air pipe 2 and the docking seat 211 can be quickly removed from the mounting seat 1.

[0046] The embodiment of the application further discloses a portable heater with a quick-release pipeline.

[0047] Referring to Figure 4 and Figure 5 , the portable heater with a quick-release pipeline comprises a box body 3 and an air heater 4 arranged in the box body 3. The box body 3 is made of plastic, and comprises a first half box 31 and a second half box 32. The air heater 4 is installed in the first half box 31, a storage space 321 is formed in the second half box 32, and a connecting piece 33 for detachably connecting the first half box 31 and the second half box 32 is arranged between the first half box 31 and the second half box 32.

[0048] One side of the first half box 31 and the second half box 32 is hinged, and the connecting piece 33 is used to detachably connect the first half box 31 and the second half box 32 at a position away from the hinged position of the first half box 31 and the second half box 32. In the embodiment, the connecting piece 33 is a lock buckle. In other embodiments, the connecting piece 33 can also be a bolt, which can penetrate the edge of the first half box 31 and be screwed into the second half box 32; the connecting piece 33 can also comprise a bolt and a nut, so that the bolt penetrates the edges of the first half box 31 and the second half box 32, and the nut and the bolt are used to lock the first half box 31 and the second half box 32. In order to facilitate the movement of the portable heater, a handle 311 is hinged to the outer wall of the first box body 3, and the handle 311 is located on the same side as the connecting piece 33. In actual application, the first half box 31 and the second half box 32 can be opened more quickly through the connecting piece 33.

[0049] A blocking net 322 for stabilizing objects is arranged in the storage space 321, and the blocking net 322 is an elastic blocking net 322. The corners of the blocking net 322 are detachably fixed to the side wall of the storage space 321. In the embodiment, the blocking net 322 is rectangular, and the four corners of the blocking net 322 are locked and fixed to the side wall of the second half box 32 through the knob bolts 323. In use, some objects or accessories can be placed between the blocking net 322 and the side wall of the first half box 31, and the objects or accessories are compressed by the blocking net 322, so that the situation that the objects or accessories move greatly during the movement of the heater is reduced.

[0050] Referring to Figure 6 and Figure 7The air heater 4 comprises an air inlet 41 and an air outlet 42, which are located at positions away from each other of the air heater 4 and penetrate through the opposite two side walls of the first box body 3, respectively. In order to improve the stability of the air heater 4, a mounting bracket 312 is fixed on the side wall of the first box body 3, and the middle part of the air heater 4 is fixed with the mounting bracket 312.

[0051] Referring to Figure 8 and Figure 9 , the portable heater further comprises a pipeline connecting structure, which is located outside the first box body 3 and is arranged corresponding to the air outlet 42 of the air heater 4. Specifically, the mounting seat 1 is fixedly installed on the outer side wall of the first box body 3, and the air outlet 42 of the air heater 4 penetrates through the communication port 11. In order to facilitate the butt joint of the butt joint seat 211 and the mounting seat 1, the first half box 31 is provided with a positioning surface 313 near the mounting seat 1, and the butt joint seat 211 is provided with a positioning wall surface 212, which abuts against the positioning surface 313. In the embodiment, the positioning surface 313 and the positioning wall surface 212 are both flat surfaces. In actual application, the cooperation of the positioning surface 313 and the positioning wall surface 212 facilitates the installation of the butt joint seat 211 and helps to improve the stability of the connection between the butt joint seat 211 and the mounting seat 1. In actual application, the pipeline connecting structure can be used to supply heat to the tent through the ventilation pipe 2.

[0052] Referring to Figure 8 and Figure 10 , the air heater 4 comprises an oil inlet pipe 43, which is sequentially connected with an oil pump 431, a first bidirectional self-sealing quick connector 5 and an oil conveying pipe 6. The oil pump 431 is located in the first half box 31, and a rubber seat 314 is fixed in the first half box 31. The oil pump 431 is fixed on the rubber seat 314, and the oil injection port of the oil pump 431 is communicated with the oil inlet pipe 43. The first bidirectional self-sealing quick connector 5 comprises a first connector 51 and a second connector 52. The oil inlet port of the oil pump 431 is communicated with the first connector 51, and the second connector 52 is communicated with the oil conveying pipe 6. Moreover, the first connector 51 is fixed on the outer wall of the first box body 3. In actual application, the portable heater is placed vertically, and the handle 311 is located on the upper side. At this time, the first connector 51 is located on the upper side of the box body 3, the first connector 51 is arranged upward, and the second connector 52 is connected with the first connector 51 by plug-in connection from top to bottom.

[0053] The oil delivery pipe 6 comprises a transfer pipe 61, a second two-way self-sealing quick connector 62 and an oil pumping pipe 623. The transfer pipe 61 is in communication with the second connector 52. The second two-way self-sealing quick connector 62 is connected in series between the transfer pipe 61 and the oil pumping pipe 623. The second two-way self-sealing quick connector 62 comprises a third connector 621 and a fourth connector 622. The third connector 621 is in communication with an end of the transfer pipe 61 away from the second connector 52. The fourth connector 622 is in communication with the oil pumping pipe 623. The fourth connector 622 is connected with a sealing member 6221 for sealing the opening of the oil tank 7 on a side of the oil pumping pipe 623. The fourth connector 622 penetrates the sealing member 6221 and is fixed with the sealing member 6221. In the embodiment, the sealing member 6221 is a sealing cover. In other embodiments, the sealing member 6221 can also be a sealing plug.

[0054] Referring to Figure 9 and Figure 10 Meanwhile, the first half tank 31 is detachably connected with the oil tank 7 on the outside. The first half tank 31 is provided with a hook 315 on the outside. The oil tank 7 is provided with a hook ear 71 on the outer wall. The hook ear 71 is hooked and matched with the hook 315. An end of the oil pumping pipe 623 away from the fourth connector 622 extends into the oil tank 7 and pumps the fuel in the oil tank 7. The sealing member 6221 is threadedly connected with the opening of the oil tank 7 and seals the opening of the oil tank 7. In actual application, the oil pump 431 can pump the oil in the oil tank 7 through the oil delivery pipe 6 and supply the oil to the air heater 4 through the oil inlet pipe 43.

[0055] In addition, in other embodiments, a fuel filter is connected in series between the first connector 51 and the oil inlet of the oil pump 431 to reduce impurities entering the air heater 4.

[0056] Referring to Figure 7 and Figure 9 The air heater 4 comprises a combustion air inlet 44 and a smoke outlet 45. The combustion air inlet 44 is in communication with an air filter 441. The side wall of the first half tank 31 adjacent to the air filter 441 is provided with a ventilation opening 316. In other embodiments, the first half tank 31 is provided with a rainproof ventilation grille at the ventilation opening to prevent rainwater from directly splashing and block impurities from entering.

[0057] The smoke outlet 45 is communicated with a smoke exhaust pipe 451, and the outer side of the smoke exhaust pipe 451 is covered with a heat insulation layer 452 which can be made of glass wool, rock wool or the like. The side wall of the first half box 31 is fixed with a heat insulation seat 8, and the heat insulation seat 8 is fixed with a smoke supply pipe 81. The box body 3 is provided with an avoiding opening 317 at the position of the heat insulation seat 8, and the smoke supply pipe 81 penetrates through the heat insulation seat 8 and the avoiding opening 317. The side wall of the avoiding opening 317 is spaced from the smoke supply pipe 81, and the smoke exhaust pipe 451 is communicated with the smoke supply pipe 81 and extends to the outer side of the box body 3 through the smoke supply pipe 81. In addition, the heat insulation seat 8 is located at the outer side of the first half box 31, and the first half box 31 is provided with a pull ring 82 at the inner side of the avoiding opening 317. The pull ring 82 and the heat insulation seat 8 are fixed by means of pull bolts and nuts. The pull bolts can be countersunk bolts, and the smoke supply pipe 81 penetrates through the pull ring 82. In addition, in the embodiment, the heat insulation seat 8 partially penetrates through the avoiding opening 317, and the pull ring 82 is sleeved on the part of the heat insulation seat 8 penetrating into the first box body 31. In other embodiments, heat insulation pads can be arranged between the side wall of the first half box 31 and the heat insulation seat 8 and between the side wall of the first half box 31 and the pull ring 82. The heat insulation pads can be made of glass wool, rock wool or the like.

[0058] In order to reduce the smoke diffusing in the vicinity of the portable heater, the first half box 31 at the ventilation opening 316 can also be provided with the above-mentioned pipeline connection structure. At this time, the mounting seat 1 of the pipeline connection structure can be the same component as the heat insulation seat 8, that is, the magnetic block 121 is embedded and fixed on the heat insulation seat 8, and the smoke supply pipe 81 is communicated with the air pipe 2 of the pipeline connection structure. In actual use, the smoke generated by the air heater 4 can be discharged to a position away from the box body 3 through the air pipe 2 of the pipeline connection structure.

[0059] In addition, in other embodiments, the power supply of the oil pump 431 and the air heater 4 can be provided with a female seat on the box body 3, so that the power supply lines of the oil pump 431 and the air heater 4 are electrically connected with the female seat, and the power supply can be taken from the vehicle by carrying a corresponding male head lighter or XT plug or DC plug. Of course, the power supply mode is not limited to this, as long as the normal power supply of the oil pump 431 and the air heater 4 can be realized, and details are not repeated here.

[0060] The implementation principle of the portable heater in the embodiment of the present application is as follows: in actual use, the oil pump 431 draws the oil in the oil tank 7 through the oil supply pipe 6 and supplies it to the air heater 4 through the oil inlet pipe 43; the combustion-supporting air enters the air heater 4 through the air filter 441 and the avoiding opening 317; the air heater 4 operates, the air enters the air heater 4 through the air inlet 41 and is heated, and then is supplied to the tent through the air outlet 42 and the air pipe 2.

[0061] At the same time, the smoke generated by the air heater 4 is discharged through the smoke exhaust pipe 451, the smoke supply pipe 81 and the corresponding air pipe 2.

[0062] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A portable heater with quick release pipeline, comprising a box body (3) and an air heater (4) arranged in the box body (3), the air heater (4) comprising an oil inlet pipe (43), characterized in that: The oil inlet pipe (43) is provided with a first two-way self-sealing quick connector (5) between the oil inlet pipe (43) and the oil delivery pipe (6), and the first two-way self-sealing quick connector (5) comprises a first connector (51) and a second connector (52), the first connector (51) is in communication with the oil inlet pipe (43), and the second connector (52) is in communication with the oil delivery pipe (6).

2. The portable heater with quick release pipes according to claim 1, characterized in that: The first connector (51) is fixed to the outer wall of the box body (3).

3. The portable heater with quick release pipes according to claim 2, characterized in that: The first connector (51) is located on the upper side of the box body (3), and the first connector (51) is arranged upward, and the second connector (52) is connected to the first connector (51) from top to bottom.

4. The portable heater with quick release tubes of claim 1, wherein: The oil pump (431) is connected in series between the first connector (51) and the oil inlet pipe (43), the oil inlet of the oil pump (431) is in communication with the first connector (51), the oil outlet of the oil pump (431) is in communication with the oil inlet pipe (43), and the oil inlet pipe (43) is communicated with the first connector (51) through the oil pump (431).

5. The portable heater with quick release hoses of claim 4, wherein: The box body (3) is fixed with a rubber seat (314), and the oil pump (431) is fixed on the rubber seat (314).

6. The portable heater with quick release pipes according to claim 1 or 4, characterized in that: The oil delivery pipe (6) is connected with a sealing member (6221) for sealing the oil tank opening, and the oil delivery pipe (6) partially penetrates the sealing member (6221).

7. The portable heater with quick release hoses of claim 6, wherein: The oil delivery pipe (6) comprises a transfer pipe (61), a second two-way self-sealing quick connector (62) and an oil suction pipe (623), the transfer pipe (61) is in communication with the second connector (52), and the second two-way self-sealing quick connector (62) is connected in series between the transfer pipe (61) and the oil suction pipe (623). The second two-way self-sealing quick connector (62) comprises a third connector (621) and a fourth connector (622), the third connector (621) is in communication with one end of the transfer pipe (61) away from the second connector (52), the fourth connector (622) is in communication with the oil suction pipe (623), and the fourth connector (622) penetrates the sealing member (6221) and is fixed with the sealing member (6221).

8. The portable heater with quick release hoses of claim 7, wherein: The box body (3) is detachably connected with an oil tank (7) on the outside, one end of the oil suction pipe (623) away from the fourth connector (622) extends into the oil tank (7) and sucks the fuel in the oil tank (7), and the sealing member (6221) seals the opening of the oil tank (7).

9. The portable heater with quick release hoses of claim 8, wherein: The box body (3) is provided with a hook (315) on the outside, and the outer wall of the oil tank (7) is provided with a hanging ear (71), the hanging ear (71) is hooked and connected with the hook (315).

10. The portable heater with quick release hoses of claim 1, wherein: The box body (3) comprises a first half box (31) and a second half box (32), the air heater (4) is installed in the first half box (31), a storage space (321) is formed in the second half box (32), and a lock catch detachably connecting the first half box (31) and the second half box (32) is connected between the first half box (31) and the second half box (32).

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