Earphone box

Abstract

The utility model belongs to the technical field of electronic products, and discloses an earphone box which comprises a box body, a bin body, a circuit board and a metal electric connecting piece, the box body is provided with a containing groove, the depth direction of the containing groove is parallel to a first direction, the bin body is installed in the containing groove and comprises a plugging head and a boss which are connected with each other, and the circuit board is connected with the metal electric connecting piece. The containing groove is divided into a notch area and a receding area in the depth direction, the area where the plugging head is located is the notch area, the area where the boss is located is the receding area, the plugging head plugs a notch of the containing groove, a containing groove is formed in the side, away from the boss, of the plugging head and extends to the boss, and the circuit board is arranged in the containing groove in the direction parallel to the first direction and extends into the receding area. One end of the metal electric connecting piece is electrically connected to the circuit board, and the other end extends into the accommodating groove. According to the utility model, the circuit board is vertically arranged in the box body and extends to one side of the boss, so that the internal space of the box body is fully utilized, the size of the circuit board can be effectively increased, and more circuit function modules can be arranged on the circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to an earphone box. Background Art

[0002] Bluetooth headsets are usually stored and charged in a headset box, which includes a box body, a storage body, a circuit board, and a metal electrical connector. The storage body is inserted into the box body in a vertical direction, and a storage slot for storing the headset is provided on the storage body. The circuit board is arranged in the box body and located at the lower side of the storage body. The metal electrical connector is provided on the storage body, one end of which extends into the storage slot and can be electrically connected to the headset in the storage slot, and the other end is electrically connected to the circuit board.

[0003] In the prior art, the circuit board is arranged horizontally in the box body, and the lower space of the box body is limited in the horizontal direction, which cannot match the circuit board of a larger volume, making it difficult to arrange more circuit functional modules on the circuit board. In addition, inside the box body, a charging connector needs to be installed on the lower side of the circuit board. The charging connector divides the space on the lower side of the circuit board in the box body into two subdivided parts. The two subdivided parts cannot be effectively utilized, resulting in a waste of space. Utility Model Content

[0004] The utility model aims to provide an earphone box capable of matching a circuit board with a larger volume.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Headphone case, including:

[0007] A box body, wherein the box body is provided with a receiving groove, and a depth direction of the receiving groove is parallel to the first direction;

[0008] A bin body is installed in the receiving groove, comprising a plugging head and a boss connected to each other, wherein the receiving groove is divided into a notch area and an escape area along the depth direction, wherein the area where the plugging head is located is the notch area, and the area where the boss is located is the escape area, wherein the plugging head blocks the notch of the receiving groove, and a receiving groove is provided on a side away from the boss, and the receiving groove extends to the boss;

[0009] A circuit board is arranged in the receiving groove parallel to the first direction and extends into the avoidance area;

[0010] A metal electrical connector, one end of which is electrically connected to the circuit board, and the other end of which extends into the receiving groove.

[0011] Preferably, there are two receiving grooves, and two metal electrical connectors are correspondingly configured for each receiving groove. The circuit board is provided with four first connection parts. The two ends of the metal electrical connector are respectively provided with a second connection part and a third connection part. Each second connection part abuts against one first connection part, and the third connection part extends into the receiving groove.

[0012] Preferably, there are two bosses, and each receiving groove correspondingly extends into one of the bosses. The circuit board extends between the two bosses.

[0013] Preferably, the circuit board is clamped between the two metal electrical connectors corresponding to the same receiving groove.

[0014] Preferably, the two receiving grooves are spaced in the second direction. In the third direction, the circuit board is located between the boss and the inner wall of the accommodating groove. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0015] Preferably, the two first connection parts corresponding to each receiving groove are spaced in the second direction.

[0016] Preferably, one of the first connection part and the second connection part is a shrapnel structure, and the other is a terminal structure.

[0017] Preferably, the boss includes a receiving platform and an external connection platform connected to each other. The receiving platform is connected to the plugging head, the receiving groove extends to the receiving platform, and the metal electrical connector passes through the external connection platform.

[0018] Preferably, the receiving platform includes a first receiving part and a second receiving part connected to each other. The first receiving part is connected to the plugging head, and the second receiving part is connected to the external connection platform. When the earphone is received in the receiving groove, the first receiving part surrounds the outside of the head of the earphone, and the second receiving part surrounds the outside of the rod of the earphone.

[0019] Preferably, it further includes a skeleton frame. The skeleton frame abuts against the inner wall of the accommodating groove, and the circuit board is connected to the skeleton frame.

[0020] Preferably, the skeleton frame is provided with a support rod. The end of the support rod is provided with a positioning rod. The circuit board is provided with a positioning hole, and the positioning rod passes through the positioning hole. The support rod abuts against the circuit board.

[0021] The beneficial effects of the present utility model:

[0022] The circuit board is arranged vertically in the box body and extends to one side of the boss, making full use of the internal space of the box body, effectively increasing the volume of the circuit board, so that more circuit function modules can be arranged on the circuit board. Moreover, since the circuit board is arranged vertically, the position of the charging connector can be adjusted more flexibly, avoiding the charging connector occupying the bottom space of the accommodating groove. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the earphone box according to Embodiment 1 of the present utility model;

[0024] Figure 2 is a cross-sectional view of the earphone box according to Embodiment 1 of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the earphone box with the cover omitted according to Embodiment 1 of the present utility model;

[0026] Figure 4 is a schematic structural diagram of the earphone box with the box body and the cover omitted according to Embodiment 1 of the present utility model;

[0027] Figure 5 is a schematic structural diagram of the earphone box with the box body, the bin body, the metal electrical connector and the cover omitted according to Embodiment 1 of the present utility model;

[0028] Figure 6 is a schematic structural diagram of the skeleton frame according to Embodiment 1 of the present utility model;

[0029] Figure 7 is a schematic structural diagram of one orientation of the bin body and the metal electrical connector in cooperation according to Embodiment 1 of the present utility model;

[0030] Figure 8 is a schematic structural diagram of another orientation of the bin body and the metal electrical connector in cooperation according to Embodiment 1 of the present utility model;

[0031] Figure 9 is a schematic structural diagram of the metal electrical connector according to Embodiment 1 of the present utility model;

[0032] Figure 10 is a cross-sectional view of the earphone box according to Embodiment 2 of the present utility model;

[0033] Figure 11 is a schematic structural diagram of the earphone box with the box body and the cover omitted according to Embodiment 2 of the present utility model;

[0034] Figure 12 is a schematic structural diagram of the skeleton frame according to Embodiment 2 of the present utility model;

[0035] Figure 13Schematic diagram of the cooperating bin body and metal electrical connector described in Embodiment 2 of the present utility model;

[0036] Figure 14 Schematic diagram of the metal electrical connector described in Embodiment 2 of the present utility model.

[0037] In the figure:

[0038] 1. Box body;

[0039] 2. Bin body; 21. Plugging head; 22. Boss; 221. Receiving platform; 2211. First receiving part; 2212. Second receiving part; 222. External connection platform; 23. Receiving groove;

[0040] 3. Circuit board; 31. First connection part;

[0041] 4. Metal electrical connector; 41. Second connection part; 42. Third connection part;

[0042] 5. Skeleton frame; 51. Middle part; 511. Strut; 512. Positioning rod; 513. Connection hole; 52. Side support part; 53. Bottom support part;

[0043] 6. Cover body. Detailed implementation manners

[0044] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar components or components with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0045] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0048] Embodiment 1

[0049] like Figures 1-9 As shown, this embodiment provides an earphone box, including a box body 1, a storage body 2, a circuit board 3 and a metal electrical connector 4. Among them, the box body 1 is provided with a receiving groove, the depth direction of the receiving groove is parallel to the first direction, the storage body 2 is installed in the receiving groove, and includes a plugging head 21 and a boss 22 connected to each other. The receiving groove is divided into a notch area and an escape area along the depth direction. In the receiving groove, the area where the plugging head 21 is located is the notch area, and the area where the boss 22 is located is the escape area. The plugging head 21 blocks the notch of the receiving groove, and a receiving groove 23 is provided on the side away from the boss 22. The receiving groove 23 extends to the boss 22. The circuit board 3 is arranged in the receiving groove parallel to the first direction and extends into the escape area. One end of the metal electrical connector 4 is electrically connected to the circuit board 3, and the other end extends into the receiving groove 23.

[0050] In the utility model, the circuit board 3 is arranged in the box body 1 along the vertical direction and extends to one side of the boss 22, which makes full use of the internal space of the box body 1 and can effectively increase the volume of the circuit board 3, so that more circuit function modules can be arranged on the circuit board 3. In addition, since the circuit board 3 is arranged vertically, the position of the charging connector can be adjusted more flexibly, avoiding the charging connector occupying the bottom space of the accommodating groove.

[0051] In this embodiment, the receiving groove is divided into a notch area, an escape area and a groove bottom area along the depth direction. In the first direction, from the notch of the receiving groove to the groove bottom, the notch area, the escape area and the groove bottom area are arranged in sequence. In the receiving groove, the area where the plugging head 21 is located is the notch area, the area where the boss 22 is located is the escape area, and the area where the chamber body 2 does not invade is the groove bottom area. The circuit board 3 is arranged at a distance from the groove bottom of the receiving groove and is suspended in the receiving groove. By adjusting the circuit board 3 upward to extend into the escape area, the circuit board 3 can minimize the occupation of the groove bottom area, so that the space under the circuit board 3 in the box body 1 can be fully utilized.

[0052] Specifically, the boss 22 includes a receiving platform 221 and an external connection platform 222 that are connected to each other. The receiving platform 221 is connected to the plugging head 21, the receiving groove 23 extends to the receiving platform 221, and the metal electrical connector 4 is passed through the external connection platform 222. By providing the external connection platform 222, the metal electrical connector 4 can be more safely and reliably assembled on the housing 2.

[0053] More specifically, the receiving platform 221 includes a first receiving portion 2211 and a second receiving portion 2212 that are connected to each other. The first receiving portion 2211 is connected to the plugging head 21, and the second receiving portion 2212 is connected to the external connection platform 222. When the earphone is received in the receiving groove 23, the first receiving portion 2211 surrounds the outside of the head of the earphone, and the second receiving portion 2212 surrounds the outside of the rod portion of the earphone. The cooperation of the first receiving portion 2211 and the second receiving portion 2212 can effectively reduce the occupied space of the overall structure while ensuring the reception and loading of the earphone.

[0054] In this embodiment, the first receiving portion 2211 is of a hemispherical structure, the second receiving portion 2212 is of a rod-shaped structure, and the external connection platform 222 is connected to the side wall of one end of the second receiving portion 2212 away from the first receiving portion 2211.

[0055] In other embodiments, the setting position of the external connection platform 222 on the second receiving portion 2212 can be adjusted and adapted according to the position of the power connection portion on the earphone, the size and installation positioning position of the circuit board 3, and the positions of the circuit function modules and charging connectors on the circuit board 3, etc.

[0056] Specifically, there are two receiving grooves 23, each receiving groove 23 is correspondingly configured with two metal electrical connectors 4, the circuit board 3 is provided with four first connection portions 31, and the two ends of the metal electrical connector 4 are respectively provided with a second connection portion 41 and a third connection portion 42. Each second connection portion 41 abuts against one first connection portion 31, and the third connection portion 42 extends into the receiving groove 23. The above settings enable the earphone structure to charge the two earphones more independently and reliably.

[0057] In this embodiment, both the box body 1 and the housing 2 are flat. The first direction is the height direction, the second direction is the length direction, and the third direction is the width direction. The first direction, the second direction, and the third direction are perpendicular to each other in pairs. The two receiving grooves 23 are spaced apart in the second direction. The circuit board 3 is arranged parallel to the first direction and the second direction. Each receiving groove 23 is configured to receive one earphone. The earphone is provided with two power connection portions, that is, the charging PINs in the prior art. When the earphone is received in the receiving groove 23, each power connection portion abuts against one third connection portion 42.

[0058] In other embodiments, the circuit board 3 may also be parallel to the first direction and disposed at an angle to the second direction.

[0059] Specifically, there are two bosses 22, and each receiving groove 23 correspondingly extends into one of the bosses 22, and the circuit board 3 extends between the two bosses 22. With the above arrangement, the circuit board 3 can make full use of the space between the two bosses 22.

[0060] More specifically, the circuit board 3 is clamped between two metal electrical connectors 4 corresponding to the same receiving groove 23. The two metal electrical connectors 4 corresponding to the same receiving groove 23 are respectively used for positive and negative electrical connections. The circuit board 3 is between the two metal electrical connectors 4, and the positioning and fixing are more reliable, avoiding interference between the two metal electrical connectors 4.

[0061] In this embodiment, two external connection platforms 222 are provided on one side of the second receiving portion 2212 of each boss 22. The two external connection platforms 222 are spaced apart in the third direction. One metal electrical connector 4 is inserted on each external connection platform 222. The second connection portion 41 of the metal electrical connector 4 extends out from the external connection platform 222. The external connection platforms 222 of the two bosses 22 extend towards each other. In the second direction, one end of the circuit board 3 is clamped between the opposite two external connection platforms 222, and the other end is clamped between the opposite two external connection platforms 222, so that the limit fixing is more reliable.

[0062] Specifically, one of the first connection portion 31 and the second connection portion 41 is a shrapnel structure, and the other is a terminal structure. When the cartridge body 2 carries the metal electrical connector 4 and is inserted in place in the box body 1, the abutting connection between the first connection portion 31 and the second connection portion 41 can be realized, avoiding the use of more complex processes such as buckling and welding.

[0063] In this embodiment, the first connection portion 31 is a terminal structure, that is, the PIN disk structure in the prior art. The metal electrical connector 4 is formed by bending an entire metal sheet body. The second connection portion 41 and the third connection portion 42 at both ends are both shrapnel structures and can elastically deform under force. When the cartridge body 2 carries the metal electrical connector 4 and is inserted in place in the box body 1, the second connection portion 41 abuts against the first connection portion 31 under the action of its own elastic restoring force.

[0064] In other embodiments, it may also be that the first connection portion 31 is a shrapnel structure and the second connection portion 41 is a terminal structure. With the above arrangement, the relative position of the metal electrical connector 4 is fixed, and the circuit board 3 abuts against the first connection portion 31 through the elastic deformation of the first connection portion 31 thereon, avoiding the second connection portion 41 rubbing against the circuit function module on the circuit board 3 during the process of inserting the cartridge body 2 into the box body 1.

[0065] Specifically, the earphone case further includes a skeleton frame 5, the skeleton frame 5 abuts against the inner wall of the accommodation groove, and the circuit board 3 is connected to the skeleton frame 5. By providing the skeleton frame 5, the circuit board 3 can be more flexibly suspended in the accommodation groove.

[0066] More specifically, the skeleton frame 5 is provided with a support rod 511, the end of the support rod 511 is provided with a positioning rod 512, the diameter of the positioning rod 512 is smaller than that of the support rod 511, the support rod 511 and the positioning rod 512 are coaxially arranged, the axis is parallel to the third direction, the circuit board 3 is provided with a positioning hole, and the positioning rod 512 passes through the positioning hole, and the support rod 511 abuts against the circuit board 3. The above setting makes the assembly of the circuit board 3 on the skeleton frame 5 more simple and reliable.

[0067] More specifically, the skeleton frame 5 is provided with three support rods 511, and each end of the support rod 511 is provided with a positioning rod 512. Among them, the first support rod 511 and the second support rod 511 are spaced apart in the second direction, and the third support rod 511 is located on the side of the first support rod 511 and the second support rod 511 facing the notch of the accommodation groove.

[0068] In this embodiment, the skeleton frame 5 includes an intermediate part 51, side support parts 52 and a bottom support part 53. There are two side support parts 52, and the two side support parts 52 are respectively connected to both ends of the intermediate part 51 in the second direction. The bottom support part 53 is connected to the side of the intermediate part 51 facing away from the notch of the accommodation groove. The intermediate part 51 is arranged parallel to the first direction and the second direction, and is attached and connected to the groove wall with a larger area of the accommodation groove. The side support parts 52 are attached and connected to the groove wall with a smaller area of the accommodation groove. The bottom support part 53 is attached and connected to the bottom of the accommodation groove. The support rod 511 is arranged on the intermediate part 51.

[0069] Specifically, the earphone case further includes a cover body 6. When the cover body 6 is buckled on the box body 1, it can cover the notch of the storage groove 23 and protect the earphones in the storage groove 23 more reliably.

[0070] In this embodiment, the cover body 6 is independent of the box body 1, and is locked by a buckle when the cover body 6 is buckled on the box body 1. In other embodiments, the cover body 6 can also be rotatably connected to the box body 1.

[0071] Embodiment Two

[0072] As Figures 10-14 shown, this embodiment provides an earphone case, and the same or corresponding parts as those in Embodiment One adopt the same or corresponding reference numerals. For the sake of simplicity, only the differences between this embodiment and Embodiment One will be described below.

[0073] The difference between this embodiment and Embodiment One is that: in the third direction, the circuit board 3 is located between the convex platform 22 and the groove wall of the accommodation groove.

[0074] In the earphone case of this embodiment, by offsetting the circuit board 3 between the boss 22 and the wall of the accommodating groove, the installation and fixation of the circuit board 3 are made safer and more reliable, and a larger complete space is provided in the avoidance area and the bottom area of the groove, so that the space below the plugging head 21 in the box body 1 can be fully utilized.

[0075] Specifically, the first connecting portion 31 is a spring sheet structure, and the second connecting portion 41 is a terminal structure. With the above arrangement, the relative position of the second connecting portion 41 of the metal electrical connector 4 is fixed, and the circuit board 3 elastically deforms its first connecting portion 31 to abut against the second connecting portion 41, avoiding the second connecting portion 41 rubbing against the circuit function module on the circuit board 3 during the process of inserting the housing 2 into the box body 1.

[0076] More specifically, the two first connecting portions 31 corresponding to each accommodating groove 23 are arranged at intervals in the second direction. With the above arrangement, during the process of inserting the housing 2 into the box body 1, it is avoided that the two second connecting portions 41 successively abut against the same first connecting portion 31, affecting the safety and reliability of the first connecting portion 31.

[0077] In this embodiment, the four first connecting portions 31 on the circuit board 3 are at the same height position from the bottom of the accommodating groove and are located on the same straight line.

[0078] Specifically, the first accommodating portion 2211 is a hemispherical structure, the second accommodating portion 2212 is a rod-shaped structure, and the second accommodating portion 2212 is eccentrically connected to the bottom of the first accommodating portion 2211. By arranging the second accommodating portion 2212 eccentrically, a larger complete space is provided in the avoidance area and the bottom area of the groove.

[0079] More specifically, two bosses 22 are provided on the housing 2, one external connecting platform 222 is provided on one side of the second accommodating portion 2212 of each boss 22, two metal electrical connectors 4 are inserted on each external connecting platform 222, the second connecting portions 41 of the two metal electrical connectors 4 extend from the same side of the external connecting platform 222 and are arranged at intervals in the second direction, and the external connecting platforms 222 of the two bosses 22 extend towards each other.

[0080] In this embodiment, in the third direction, the circuit board 3 is located between the two external connecting platforms 222 and the wall of the accommodating groove.

[0081] In other embodiments, only one boss 22 may be provided on the housing 2, and both accommodating grooves extend into the boss 22.

[0082] Specifically, due to the offset of the circuit board 3, there is no need to provide a support rod 511 and a positioning rod 512 on the skeleton frame 5 to support the circuit board 3. At this time, a connection hole 513 is provided on the middle portion 51, and the circuit board 3 is connected to the middle portion 51 through a fastener passing through the connection hole 513.

[0083] In this embodiment, the skeleton frame 5 is provided with hollow holes to leave mounting space for the components on the circuit board 3.

[0084] In other embodiments, the circuit board 3 can also be adhered to the skeleton frame 5 through positioning grooves and pressure-sensitive adhesives.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Headphone case, characterized in that, include: A box body (1), wherein the box body (1) is provided with a receiving groove, wherein the depth direction of the receiving groove is parallel to the first direction; A bin body (2) is installed in the receiving groove, comprising a plugging head (21) and a boss (22) connected to each other, the receiving groove is divided into a notch area and an escape area along a depth direction, in the receiving groove, the area where the plugging head (21) is located is the notch area, and the area where the boss (22) is located is the escape area, the plugging head (21) blocks the notch of the receiving groove, and a receiving groove (23) is arranged on a side away from the boss (22), and the receiving groove (23) extends to the boss (22); A circuit board (3) is arranged in the accommodation groove parallel to the first direction and extends into the avoidance area; A metal electrical connector (4), one end of the metal electrical connector (4) being electrically connected to the circuit board (3) and the other end extending into the receiving groove (23).

2. The earphone case according to claim 1, wherein, Two receiving grooves (23) are provided, and each receiving groove (23) is correspondingly configured with two metal electrical connectors (4); the circuit board (3) is provided with four first connecting parts (31); two ends of the metal electrical connector (4) are respectively provided with a second connecting part (41) and a third connecting part (42); each of the second connecting parts (41) abuts against one of the first connecting parts (31), and the third connecting part (42) extends into the receiving groove (23).

3. The earphone case according to claim 2, characterized in that, Two bosses (22) are provided, each receiving groove (23) extends into a corresponding boss (22), and the circuit board (3) extends between the two bosses (22).

4. The earphone case according to claim 3, characterized in that, The circuit board (3) is sandwiched between two metal electrical connectors (4) corresponding to the same storage slot (23).

5. The earphone case according to claim 2, wherein, The two receiving grooves (23) are spaced apart in the second direction, and in the third direction, the circuit board (3) is located between the boss (22) and the groove wall of the receiving groove, and the first direction, the second direction and the third direction are perpendicular to each other.

6. The earphone case according to claim 5, characterized in that, The two first connection portions (31) corresponding to each of the receiving grooves (23) are arranged at intervals in the second direction.

7. The earphone case according to claim 1, characterized in that The boss (22) comprises a receiving platform (221) and an external connection platform (222) which are connected to each other, the receiving platform (221) is connected to the plugging head (21), the receiving groove (23) extends to the receiving platform (221), and the metal electrical connector (4) is inserted through the external connection platform (222).

8. The earphone case according to claim 7, characterized in that The storage platform (221) comprises a first storage portion (2211) and a second storage portion (2212) which are connected to each other, wherein the first storage portion (2211) is connected to the sealing head (21), and the second storage portion (2212) is connected to the external platform (222); when the earphone is stored in the storage groove (23), the first storage portion (2211) is arranged around the outside of the head of the earphone, and the second storage portion (2212) is arranged around the outside of the stem of the earphone.

9. The earphone case according to any one of claims 1-8, characterized in that, It further includes a skeleton frame (5), the skeleton frame (5) abuts against the inner wall of the accommodating groove, and the circuit board (3) is connected to the skeleton frame (5).

10. The earphone case according to claim 9, wherein The skeleton frame (5) is provided with a support rod (511), the end of the support rod (511) is provided with a positioning rod (512), the circuit board (3) is provided with a positioning hole, the positioning rod (512) passes through the positioning hole, and the support rod (511) abuts against the circuit board (3).

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