CN219644358U

CN219644358U - Wireless connection box

Info

Publication number: CN219644358U
Application number: CN202321327576.XU
Authority: CN
Inventors: 张晓峰; 江海昊; 梁树军; 蒙健平; 肖运明; 赵阿立
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-09-05
Anticipated expiration: 2033-05-29

Abstract

The utility model discloses a wireless connection box, which relates to the technical field of wireless technology, and comprises a shell, a mounting seat and a chip assembly, wherein the shell is provided with a containing cavity, one end of the containing cavity is provided with a first opening, the other end of the containing cavity is closed, the chip assembly comprises a circuit board and a USB interface arranged at one end of the circuit board, the chip assembly is detachably arranged on the mounting seat and forms an integral component, the integral component is arranged in the containing cavity, the USB interface extends out of the first opening, and the mounting seat is detachably connected with the shell. According to the utility model, the chip assembly can be replaced after the chip assembly fails, the whole wireless connection box does not need to be replaced, and the maintenance cost is reduced.

Description

Wireless connection box

Technical Field

The utility model relates to the technical field of wireless, in particular to a wireless connection box.

Background

In the related art, the wireless connection box has a complex structure and high manufacturing cost, and after the wireless connection box fails, the wireless connection box needs to be replaced integrally, so that the maintenance cost is high.

Disclosure of Invention

Accordingly, it is desirable to provide a wireless connection box to reduce the maintenance cost of the wireless connection box.

To achieve the above object, an embodiment of the present utility model provides a wireless connection box, including:

the shell is provided with a containing cavity, one end of the containing cavity is provided with a first opening, and the other end of the containing cavity is closed;

a mounting base;

the chip assembly comprises a circuit board and a USB interface arranged at one end of the circuit board, the chip assembly is detachably arranged on the mounting seat and forms an integral member, the integral member is arranged in the accommodating cavity, the USB interface extends out of the first opening, and the mounting seat is detachably connected with the shell.

In some embodiments, a mounting opening is formed on a side wall of the housing, and a spring piece is correspondingly formed on a side surface of the mounting seat, and the spring piece is clamped with the mounting opening.

In some embodiments, the wireless connection box comprises a first sealing ring, the mounting seat comprises a barrel, the circuit board is arranged in the barrel, the barrel and the shell are nested, the first sealing ring is sleeved on the periphery of the barrel and is positioned on one side, far away from the first opening, of the mounting opening, and the first sealing ring is used for sealing a gap between the outer surface of the barrel and the inner surface of the shell.

In some embodiments, one end of the barrel away from the USB interface is contracted inwards and is formed with a step portion, the step portion has a first step surface, the first sealing ring is sleeved on the circumferential outer side of the step portion, the inner wall of the housing has a second step surface protruding inwards, and the first sealing ring is abutted between the first step surface and the second step surface along the axial direction.

In some embodiments, the mounting base comprises a barrel portion and a protruding portion, the circuit board is arranged in the barrel portion, the barrel portion and the shell are nested, the protruding portion protrudes out of the shaft end face of the barrel portion, the protruding portion is provided with a mounting hole, and the USB interface penetrates through the mounting hole.

In some embodiments, the wireless connection box includes a second sealing ring, sleeved on the periphery of the USB interface, and used for sealing and abutting against the end face of the barrel.

In some embodiments, the wireless connection box comprises a docking ring sleeved on the periphery of the protruding portion, and a plurality of protrusions arranged at intervals in the circumferential direction are formed on the inner wall of the docking ring and are used for being matched and connected with the female head.

In some embodiments, the circumferential outer wall of the projection is formed with a collar and the circumferential inner wall of the docking collar is formed with a toothed structure located on a side of the collar adjacent to the barrel and adapted to cooperate with the collar stop.

In some embodiments, the mounting base comprises a barrel and at least two spring arm assemblies, the spring arm assemblies are arranged in the barrel, one end of the barrel is provided with a second opening, the other end of the barrel is provided with a mounting hole, the USB interface is arranged in the mounting hole in a penetrating mode along a first direction, and each spring arm assembly restrains the circuit board in the barrel.

In some embodiments, the spring arm assembly includes a spring arm and a blocking piece, wherein one end of the spring arm, which is close to the USB interface, is connected to the barrel, and the blocking piece is disposed at one end of the spring arm, which is far away from the USB interface, and is used for abutting the circuit board against the barrel along the first direction.

In some embodiments, the spring arm assembly includes a buckle and a flange, the buckle and the flange are disposed on the spring arm and are disposed along a thickness direction of the circuit board at intervals, and the buckle and the flange constrain the circuit board therebetween along the thickness direction.

The wireless connection box provided by the embodiment of the utility model is convenient to assemble through the detachable connection of the mounting seat and the shell, and is convenient to detach and replace or overhaul the shell when the shell is damaged, meanwhile, the chip component is detachably connected with the mounting seat, and the chip component can be replaced after the chip component fails, so that the whole wireless connection box is not required to be replaced, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a wireless connection box according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of the housing of FIG. 1;

FIG. 4 is a schematic view of the mounting base of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 4 from another perspective;

FIG. 6 is a schematic diagram of a mounting base and chip assembly;

fig. 7 is a schematic structural view of the docking ring of fig. 1.

Description of the reference numerals

A housing 1; a housing chamber 1a; a first opening 1b; a mounting port 1c; a second step surface 1d; a mounting base 2; a spring plate 2a; a cylindrical portion 21; a step portion 21a; a first step surface 21aa; a second opening 21b; a projection 22; a mounting hole 22a; a convex ring 22b; a spring arm assembly 23; spring arm 231; a blocking piece 232; a clasp 233; a collar 234; a chip assembly 3; a circuit board 31; a USB interface 32; a first seal ring 4; a second seal ring 5; a docking ring 6; a protrusion 6a; tooth-like structure 6b.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present utility model and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present utility model and should not be construed as unduly limiting the present utility model.

The utility model will be described in further detail with reference to the accompanying drawings and specific examples. In the description of the present utility model, the azimuth or positional relationship of "inner", "outer", etc. is based on the azimuth or positional relationship when the wireless connection box is normally used, and it should be understood that these azimuth terms are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. The description of "first," "second," etc. in embodiments of the utility model is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly including at least one feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is at least two, that is, includes two and more, for example, two or three, etc., unless specifically defined otherwise.

The embodiment of the utility model provides a wireless connection box, please refer to fig. 1 to 7, which comprises a shell 1, a mounting seat 2 and a chip assembly 3.

The housing 1 has a housing chamber 1a, one end of the housing chamber 1a having a first opening 1b and the other end being closed.

The chip assembly 3 includes a circuit board 31 and a USB (Universal Serial Bus ) interface 32 provided at one end of the circuit board 31.

The kind of the circuit board 31 is not limited. Illustratively, the circuit board 31 may be a PCB (Printed Circuit Board ).

The PCB serves as a carrier for electrical connection of electronic components such as integrated circuits. Thus, due to the consistency of the same type of PCBs, errors of manual wiring are avoided, automatic insertion or mounting, automatic soldering and automatic detection of electronic components can be realized, the quality of the chip assembly 3 in the wireless connection box is ensured, the labor productivity is improved, the cost is reduced, and the maintenance is convenient. It will be appreciated that the female socket pins of the USB interface 32 are soldered to the PCB.

The chip assembly 3 is detachably disposed on the mounting base 2 and forms a unitary member, which is disposed in the accommodating chamber 1 a. That is, the chip assembly 3 and the mounting seat 2 are mounted with the housing 1 after being preassembled, and the chip assembly 3 is pre-positioned on the mounting seat 2, so that the structure is compact, and the assembly efficiency of the chip assembly 3 is improved.

The USB interface 32 protrudes from the first opening 1 b. That is, the circuit board 31 is located in the accommodating cavity 1a, and the USB interface 32 is at least partially located outside the accommodating cavity 1a, so as to be connected with the female through the USB interface 32 in a matching manner when in use.

The mounting seat 2 is detachably connected with the shell 1.

The wireless connection box provided by the embodiment of the utility model is detachably connected with the shell 1 through the mounting seat 2, is convenient to assemble, is convenient to detach when the shell 1 is damaged, and is convenient to replace or overhaul the shell 1, meanwhile, the chip assembly 3 is detachably connected with the mounting seat 2, and the chip assembly 3 can be replaced after the chip assembly 3 fails, so that the whole wireless connection box is not required to be replaced, and the maintenance cost is reduced.

The manner in which the mount 2 and the housing 1 are detachably connected is not limited. Illustratively, the mount 2 is snapped, screwed, bolted, etc. with the housing 1. For example, one of the mounting seat 2 and the housing 1 is formed with a buckle, and the other is formed with a clamping groove, and the buckle is matched and clamped with the clamping groove. The mounting seat 2 and the shell 1 can be that the mounting seat 2 is provided with a buckle, and the shell 1 is provided with a clamping groove; the mounting base 2 may be formed with a groove, and the housing may be formed with a buckle. Thus, the mounting seat 2 can be fast clamped on the shell 1.

In an embodiment, referring to fig. 1 to 3, a mounting opening 1c is formed on a side wall of the housing 1, a spring plate 2a is correspondingly formed on a side surface of the mounting seat 2, and the spring plate 2a is clamped with the mounting opening 1 c. Illustratively, during assembly, the chip assembly 3 and the mounting base 2 are assembled into a unitary member, the unitary member is pushed into the accommodating cavity 1a, the spring plate 2a is compressed and folded on the side surface of the mounting base 2, and the spring plate 2a is elastically stretched out of the mounting opening 1c when being positioned at the mounting opening 1c, and is then clamped with the mounting opening 1 c. Thus, the installation of the shell 1 and the installation seat 2 is facilitated, and the assembly efficiency is improved.

The structure of the mount 2 is not limited. Illustratively, the mount 2 includes a barrel 21, the circuit board 31 is disposed within the barrel 21, and the barrel 21 and the housing 1 are nested. The nesting means that the outer surface of the tube 21 abuts against the inner surface of the housing 1.

In one embodiment, referring to fig. 2, the wireless connection box includes a first sealing ring 4.

The kind of the first seal ring 4 is not limited. The first sealing ring 4 may be natural rubber, silicone rubber, ethylene propylene rubber or the like, and is suitable for water and dust prevention in environments such as drinking water, hot water, oil-free air and the like.

The first seal ring 4 is sleeved on the outer periphery of the cylindrical portion 21 and is located on the side of the mounting opening 1c away from the first opening 1b, for sealing a gap between the outer surface of the cylindrical portion 21 and the inner surface of the housing 1.

It will be appreciated that the spring 2a does not completely cover the mounting opening 1c, and that external dust or moisture enters between the outer surface of the cylindrical portion 21 and the inner surface of the housing 1 through the gap between the mounting opening 1c and the spring 2a, thereby damaging the circuit board 31. In this embodiment, the first sealing ring 4 is disposed on the outer periphery of the barrel 21, so that water vapor or dust and the like are reduced from entering the accommodating cavity 1a and then entering the barrel 21, so that the electrical connection of the circuit board 31 inside the barrel 21 is more stable and reliable.

In an embodiment, referring to fig. 2, 3 and 5, an end of the barrel 21 away from the USB interface 32 is contracted inwards and formed with a step portion 21a, the step portion 21a has a first step surface 21aa, the first seal ring 4 is sleeved on the circumferential outer side of the step portion 21a, the inner wall of the housing 1 has a second step surface 1d protruding inwards, and the first seal ring 4 is abutted between the first step surface 21aa and the second step surface 1d along the axial direction.

That is, in the assembling process, after the first seal ring 4 is sleeved on the barrel 21, the integral member is sleeved into the housing 1 to continuously push the housing 1a, and in the pushing process, the inner wall of the housing 1 provides friction force for the first seal ring 4 so that the first seal ring 4 is abutted against the first step surface 21aa and cannot fall off, and when the elastic piece 2a of the mounting seat 2 returns to the original state and is clamped with the mounting opening 1c, the first seal ring 4 is axially abutted between the first step surface 21aa and the second step surface 1 d. In this way, the housing 1 and the cylindrical portion 21 are effectively sealed during the installation process and after the assembly is completed, water vapor or dust and the like are reduced from entering the accommodating cavity 1a, and the sealing effect is improved.

Illustratively, the cylindrical portion 21 is a sealing material, further improving the sealing performance.

In an embodiment, referring to fig. 1 and 4, the mounting base 2 includes a protruding portion 22, the protruding portion 22 protrudes from an axial end surface of the barrel 21, the protruding portion 22 is formed with a mounting hole 22a, and the usb interface 32 is disposed through the mounting hole 22a.

It will be appreciated that the projection 22 is located at an end of the barrel 21 adjacent the first opening 1 b.

The mounting holes 22a can be pre-positioned for the chip assembly 3. That is, the USB interface 32 is passed through the mounting hole 22a to complete the predetermined positioning.

In an embodiment, referring to fig. 1 and 2, the wireless connection box includes a second sealing ring 5 sleeved on the outer periphery of the USB interface 32 and used for sealing and abutting against the end surface of the barrel 21. It will be appreciated that, when the wireless connection box is in use, the USB interface 32 is in plug-in fit with the female connector, and the female connector generates a tightening force to the end face of the barrel 21 on the second sealing ring 5 in the plug-in process, and the second sealing ring 5 is in sealing abutting connection with the end face of the barrel 21 by the tightening force. In this way, sealing of the junction of the USB interface 32 and the female is achieved.

According to the embodiment of the utility model, the arrangement of the first sealing ring 4 and the second sealing ring 5 can achieve the protection grade of IP65 (IP, ingress Protection, intrusion protection), wherein the IP grade is the protection grade for the intrusion of foreign matters into the electrical equipment shell, the 6 is the dustproof grade, the dust is completely prevented from entering, the 5 is the waterproof grade, and the low-pressure injection at any angle is not influenced. That is, the present utility model has a good dust-proof effect and can be applied to an outdoor environment.

In an embodiment, referring to fig. 1 and 2, the wireless connection box includes a docking ring 6 sleeved on the periphery of the protruding portion 22, and a plurality of protrusions 6a disposed at intervals opposite to each other in the circumferential direction are formed on the inner wall of the docking ring 6 for being connected with the female connector in a matching manner.

The docking ring 6 has a ring-shaped structure.

Illustratively, the docking ring 6 is hexagonal ring-shaped, which is convenient to screw, and improves assembly efficiency.

It will be appreciated that for ease of installation with the female, the projection 6a is provided on the inner wall of the docking collar 6 remote from the projection 22. Illustratively, two protrusions 6a are formed on the inner wall of the docking ring 6, and two grooves are formed on the outer periphery of the female head, wherein the two grooves are arranged at opposite intervals, and the protrusions 6a are clamped with the grooves. Thus, the female head is correspondingly clamped with the protrusion 6a through the groove, and can be rapidly positioned with the wireless connection box.

In an embodiment, referring to fig. 2, 4 and 7, a convex ring 22b is formed on the circumferential outer wall of the convex portion 22, a tooth structure 6b is formed on the circumferential inner wall of the docking ring 6, and the tooth structure 6b is located on one side of the convex ring 22b near the barrel 21 and is used for being in stop fit with the convex ring 22 b.

It should be noted that, the stop fit means that the convex ring 22b can be fixed with the tooth structure 6b in a fit manner, so that the convex portion 22 and the docking ring 6 cannot generate relative displacement.

Illustratively, during the assembly process, the female head is turned to be in butt joint with the USB interface 32 by clamping the protrusion 6a with the groove, the docking ring 6 is screwed, the toothed structure 6b is in butt joint with the convex ring 22b during screwing of the docking ring 6, and the toothed structure 6b deforms toward the convex ring 22b away from the side of the barrel 21 and is in stop fit with the convex ring 22 b. After assembly, the toothed structure 6b is located on the side of the collar 22b adjacent to the barrel 21.

In the related art, after the female head is in butt joint with the USB interface, the female head is screwed by a nut, and the operation is complex. In this embodiment, the process of screwing the nut is simplified by arranging the toothed structure 6b, the nut is quickly installed and fixed with the convex ring 22b, the assembly efficiency is improved, and meanwhile, the toothed structure 6b is matched with the convex ring 22b in a stop mode, so that the phenomenon that the docking ring 6 falls off from the convex part 22 is reduced.

In an embodiment, referring to fig. 5 and 6, the mounting base 2 includes at least two spring arm assemblies 23, the spring arm assemblies 23 are disposed in the barrel 21, one end of the barrel 21 has a second opening 21b, the other end has a mounting hole 22a, and the usb interface 32 is disposed through the mounting hole 22a along the first direction.

That is, the circuit board 31 is disposed in the barrel 21, and the USB interface 32 is at least partially disposed outside the barrel 21.

Each spring arm assembly 23 restrains the circuit board 31 within the barrel 21.

It will be appreciated that the spring arm assemblies 23 are resilient, and that two opposing spring arm assemblies 23 can be opened by an external force to spring back the chip assembly 3 after it is placed in order to retain the circuit board 31 within the barrel 21.

The spring arm assembly 23 and the mounting hole 22a realize the limitation of the length direction, the width direction and the thickness direction of the circuit board 31. Therefore, the clamping of the spring arm assembly 23 to the circuit board 31 prevents the chip assembly 3 from loosening in the use occasions such as plugging with the female connector, and the reliability of the wireless connection box is improved.

The connection between the spring arm assembly 23 and the cylindrical portion 21 is not limited.

Illustratively, the spring arm assembly 23 may be removably connected or integrally formed with the barrel 21. For example, the mounting seat 2 is integrally injection molded, so that the assembly process of the spring arm assembly 23 and the barrel 21 is reduced, and the production efficiency is improved.

For convenience of description, the first direction is defined as a length direction of the circuit board 31, and the second direction is defined as a width direction of the circuit board 31.

In one embodiment, at least two spring arm assemblies 23 are mirror image disposed about the circuit board 31. That is, the number of the arm modules 23 is an even number, the plurality of arm modules 23 are arranged in pairs, and two arm modules 23 of each pair are arranged at intervals in the second direction. Like this, the structure of mount pad 2 is more balanced, and inside atress is even, can reduce the load and the stress of mount pad 2 to the quality and the reliability of mount pad 2 have been improved.

Illustratively, the number of spring arm assemblies 23 is two, with the two spring arm assemblies 23 being spaced apart along the second direction. Thus, the barrel 21 has a simple structure, the spring arm assembly 23 does not occupy a large space of the barrel 21, and the circuit board 31 is convenient to install.

In an embodiment, the spring arm assembly 23 includes a spring arm 231 and a blocking piece 232, wherein one end of the spring arm 231, which is close to the USB interface 32, is connected to the barrel 21, and the blocking piece 232 is disposed at one end of the spring arm 231, which is far away from the USB interface 32, and is used for abutting the circuit board 31 against the barrel 21 along the first direction.

That is, the inner wall of the cylindrical portion 21 near one end of the mounting hole 22a and the stopper 232 restrain the circuit board 31 therebetween, achieving the limitation of the circuit board 31 in the length direction. The spring arms 231 of the two spring arm assemblies 23 which are correspondingly arranged are oppositely arranged at intervals along the second direction, and the circuit board 31 is restrained between the two spring arms 231, so that the limit of the width direction of the circuit board 31 is realized.

In an embodiment, referring to fig. 5, the spring arm assembly 23 includes a buckle 233 and a flange 234, the buckle 233 and the flange 234 are disposed on the spring arm 231 and are spaced apart along the thickness direction of the circuit board 31, and the buckle 233 and the flange 234 constrain the circuit board 31 therebetween along the thickness direction. It can be appreciated that the circuit board 31 can be pressed into the buckle 233 in the thickness direction to be clamped under the action of external force. The clip 233 and the flange 234 realize a limit in the thickness direction of the circuit board 31. Thus, the circuit board 31 is simple to install and convenient to repair and disassemble in the later period.

Illustratively, the assembly process of the chip assembly 3 with the mounting box is: the two spring arm assemblies 23 which are arranged at opposite intervals are opened, the USB interface 32 of the chip assembly 3 is penetrated through the mounting hole 22a, the circuit board 31 of the chip assembly 3 is propped against the convex edge 234, one end of the circuit board 31 far away from the USB interface 32 is clamped into the buckle 233 along the thickness direction of the circuit board 31 for internal clamping, the two spring arms 231 rebound to restrain the circuit board 31 between the two spring arm assemblies, and one end of the circuit board 31 far away from the USB interface 32 is propped against the baffle 232.

In the description of the present utility model, a description of the terms "some embodiments" or "exemplary" and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In the present utility model, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples described in the present utility model and the features of the various embodiments or examples may be combined by those skilled in the art without contradiction.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wireless connection box, comprising:

a mounting base;

2. The wireless connection box according to claim 1, wherein a mounting opening is formed in a side wall of the housing, and a spring piece is correspondingly formed on a side surface of the mounting seat, and the spring piece is clamped with the mounting opening.

3. The wireless connection box according to claim 2, wherein the wireless connection box comprises a first sealing ring, the mounting seat comprises a barrel portion, the circuit board is arranged in the barrel portion, the barrel portion and the shell are nested, the first sealing ring is sleeved on the periphery of the barrel portion and is located on one side, away from the first opening, of the mounting opening, and is used for sealing a gap between the outer surface of the barrel portion and the inner surface of the shell.

4. The wireless connection box according to claim 3, wherein one end of the barrel portion away from the USB interface is contracted inwards and is formed with a step portion, the step portion is provided with a first step surface, the first sealing ring is sleeved on the circumferential outer side of the step portion, the inner wall of the housing is provided with a second step surface protruding inwards, and the first sealing ring is abutted between the first step surface and the second step surface along the axial direction.

5. The wireless connection box according to claim 1, wherein the mounting base comprises a barrel portion and a protruding portion, the circuit board is arranged in the barrel portion, the barrel portion and the shell are nested, the protruding portion protrudes out of the shaft end face of the barrel portion, a mounting hole is formed in the protruding portion, and the USB interface is arranged in the mounting hole in a penetrating mode.

6. The wireless connection box according to claim 5, wherein the wireless connection box comprises a second sealing ring sleeved on the periphery of the USB interface and used for sealing and abutting with the end face of the barrel portion.

7. The wireless connection box according to claim 5, wherein the wireless connection box comprises a docking ring sleeved on the periphery of the protruding portion, and a plurality of protrusions arranged at intervals in a circumferential direction are formed on the inner wall of the docking ring and are used for being connected with the female head in a matched mode.

8. The wireless connection box of claim 7, wherein the peripheral outer wall of the projection is formed with a collar and the peripheral inner wall of the docking collar is formed with a tooth-like structure located on a side of the collar adjacent the barrel for engagement with the collar stop.

9. The wireless connection box of claim 1, wherein the mounting base comprises a barrel portion and at least two spring arm assemblies, the spring arm assemblies are arranged in the barrel portion, one end of the barrel portion is provided with a second opening, the other end of the barrel portion is provided with a mounting hole, the USB interface is arranged in the mounting hole in a penetrating manner along a first direction, and each spring arm assembly restrains the circuit board in the barrel portion.

10. The wireless connection box of claim 9, wherein the spring arm assembly comprises a spring arm and a blocking piece, wherein one end of the spring arm, which is close to the USB interface, is connected to the barrel, and the blocking piece is disposed at one end of the spring arm, which is far away from the USB interface, and is used for abutting the circuit board against the barrel along the first direction.

11. The wireless connection box of claim 10, wherein the spring arm assembly comprises a buckle and a flange, the buckle and the flange are disposed on the spring arm and are disposed at intervals along a thickness direction of the circuit board, and the buckle and the flange constrain the circuit board therebetween along the thickness direction.