Portable rechargeable audio transmitter

Abstract

The utility model discloses a portable rechargeable audio transmitter, which relates to the technical field of audio transmitters and comprises a transmitter body inserted into a main device. The transmitter body comprises a shell, a control module arranged in the shell, a signal plug electrically connected with the control module, a power supply piece electrically connected with the control module, and a fixing column used for enabling the shell to be fixed and limited on a main device. The audio transmitter can continuously and stably work in an environment independent of a power supply of a main device, the problem of abnormal signal transmission caused by unstable power supply of the main device is effectively avoided, the structural characteristic that the fixed column and the signal plug are designed on the same side can form bidirectional mechanical support during plugging, and the reliability of the audio transmitter is improved. And tight contact between the signal plug and the main equipment jack is ensured to reduce signal loss.

Description

TECHNICAL FIELD

[0001] The utility model relates to audio transmitter technical field, concretely is a portable charging type audio transmitter. BACKGROUND

[0002] Audio transmitter (Audio Transmitter) is a kind of electronic device that converts audio signal into wireless signal and transmits to receiving equipment (such as earphone, sound box etc.). Its core working principle can be divided into the following steps:

[0003] Audio source access: audio transmitter obtains analog audio signal through wired interface (such as 3.5mm AUX, RCA, optical fiber, USB);

[0004] Signal conversion: analog audio signal is converted into digital signal by analog-digital converter (ADC);

[0005] Radio frequency modulation: encoded digital signal is modulated into high-frequency wireless signal by radio frequency module (such as 2.4GHz, 5.8GHz or Bluetooth chip);

[0006] Receiving and restoring: receiving end (earphone / sound box) demodulates signal by wireless chip, restores to digital audio by decoder, and outputs analog signal to drive loudspeaker by digital-analog converter (DAC).

[0007] In the published patent "a transmitter" with publication number CN221669864U, one of the working scenarios is that the XBOX handle has target analog audio signal generated and sent by XBOX game machine, the transmitter body 100 is plugged into the 3.5mm audio interface on the XBOX game machine handle through audio plug, to obtain analog audio signal in the XBOX handle, the transmitter body 100 is plugged into the miniHDMI interface on the XBOX game machine handle through miniHDMI joint, to supply power, finally the transmitter body 100 converts the analog audio signal into audio digital signal, and then sends the audio digital signal to the wireless earphone, so that the audio information of XBOX handle can be received at the wireless earphone end.

[0008] The applicant points out that in actual use, the transmitter device in the above-mentioned published technical solution directly depends on the power supply of the handle, which increases the power consumption of the handle battery and shortens the endurance time of the handle. Moreover, when the miniHDMI interface takes power from the XBOX game machine handle, the miniHDMI interface is unstable due to unstable power supply of the handle and touching of the transmitter body 100 by both hands of the user during use, which affects the customer experience due to the current sound in the wireless earphone. UTILITY MODEL CONTENT

[0009] The utility model discloses in order to overcome above-mentioned situation shortage, aims at providing a portable charging type audio frequency transmitter can solve above-mentioned problem's technical scheme.

[0010] In order to realize above-mentioned purpose, the utility model provides following technical scheme:

[0011] A portable charging type audio frequency transmitter, including the transmitter body of being inserted on main equipment, the transmitter body includes the casing, the control module of being arranged in the casing, the signal plug of being electrically connected with control module, the power supply spare of being electrically connected with control module and with the fixed column of being used to make the casing fixed limit on main equipment.

[0012] The control module is used to convert the target analog audio signal received by the signal plug into a digital audio signal, and can transmit the digital audio signal wirelessly.

[0013] The signal plug is used to connect with the signal output socket on the main equipment.

[0014] The power supply spare is used to provide a power supply circuit independent of the main equipment for the control module.

[0015] The fixed column is fixedly arranged on the casing and arranged on the same side as the signal plug.

[0016] As a further scheme of the utility model: the front end face of the casing is provided with a first arc-shaped mounting surface for abutting with the rear end face of the handle, and the first arc-shaped mounting surface comprises a plane portion arranged in the middle and arc surface portions symmetrically arranged on both sides of the plane portion.

[0017] As a further scheme of the utility model: the connection between the first arc-shaped mounting surface and the upper end face and the lower end face of the casing is respectively formed with an upper limiting boss and a lower limiting boss, and an installation position is formed between the upper limiting boss and the lower limiting boss, the height of the installation position is matched with the height of the rear end of the main equipment, and the connection between the upper limiting boss and the first arc-shaped mounting surface is provided with a first transition inclined surface and a second transition inclined surface connected with each other.

[0018] As a further scheme of the utility model: the front end face of the casing is provided with a fixed mounting hole, and the fixed column is arranged in the fixed mounting hole, an auxiliary fixing groove is formed on the inner wall of the fixed mounting hole, and an auxiliary fixing protrusion is fixedly arranged at the rear end of the fixed column and limited in the auxiliary fixing groove.

[0019] As a further scheme of the utility model: the signal plug comprises an earphone plug fixedly arranged on the control module, the front end face of the casing is provided with a plug mounting hole, the earphone plug is stretched out from the plug mounting hole, and a fastening ring is fixedly sleeved on the earphone plug and tightly matched in the plug mounting hole.

[0020] As a further scheme of the utility model: the shell includes mutually buckled upper shell and lower shell, installation cavity is formed between the upper shell and the lower shell, the fixed mounting hole includes upper fixed hole and lower fixed hole respectively arranged on the opposite faces of the upper shell and the lower shell, the auxiliary fixing groove includes upper fixed groove and lower fixed groove respectively arranged on the opposite faces of the upper shell and the lower shell.

[0021] As a further scheme of the utility model: the plug mounting hole includes upper mounting hole and lower mounting hole respectively arranged on the opposite faces of the upper shell and the lower shell.

[0022] As a further scheme of the utility model: the upper end face of the upper shell is provided with a key mounting groove, a key cap is arranged in the key mounting groove, a shaft body is arranged on the control module, the lower end face of the key cap is fixedly provided with a column body and a limiting plate surrounding the periphery of the column body, the column body is used for touching cooperation with the shaft body, the limiting plate is used for sliding limiting cooperation with the inner wall of the key mounting groove, the lower end face of the limiting plate is formed with a limiting block in the key mounting groove for limiting stop cooperation.

[0023] As a further scheme of the utility model: the power supply part includes a charging battery, the charging battery is arranged on the inner bottom face of the installation cavity, the control module includes a circuit board, the circuit board is arranged above the charging battery for alignment cooperation with the key mounting groove.

[0024] As a further scheme of the utility model: the main device includes a gamepad, the gamepad is provided with a charging port electrically connected with the control module, the periphery of the key cap is provided with a lamp strip electrically connected with the control module, the upper end face of the upper shell is provided with a multi-color LED indicator lamp electrically connected with the control module.

[0025] Compared with the prior art, the utility model has the advantages that:

[0026] The audio transmitter of the utility model realizes the continuous and stable work of the device in the environment of separating from the power supply of the main device through the integration of the independently powered power supply part and the signal processing module, effectively avoids the problem of signal transmission anomaly caused by unstable power supply of the main device, and the structure characteristic that the fixing column and the signal plug are designed on the same side can form bidirectional mechanical support when plugging, which ensures the close contact of the signal plug and the main device socket to reduce signal loss. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structure perspective drawing of the utility model;

[0028] Figure 2 It is another structure perspective drawing of the utility model;

[0029] Figure 3 It is the explosion drawing of the utility model;

[0030] Figure 4 is another explosion chart of the utility model;

[0031] Figure 5 is the structure perspective view of the lower shell in the utility model;

[0032] Figure 6 is the structure perspective view of the upper shell in the utility model;

[0033] Figure 7 is another structure perspective view of the upper shell in the utility model;

[0034] Figure 8 is the use state chart of one embodiment of the utility model;

[0035] The reference signs and names in the drawing are as follows:

[0036] Transmitter body-100, shell-101, control module-102, signal plug-103, power supply-104, fixed column-105, main device-108, first arc-shaped mounting surface-110, flat surface-111, arc surface-112, upper limit position boss-113, lower limit position boss-114, mounting position-115, first transition inclined surface-117, second transition inclined surface-118, fixed mounting hole-119, auxiliary fixing groove-120, auxiliary fixing block-121, earphone plug-122, plug mounting hole-123, fastening ring-124, upper shell-125, lower shell-126, mounting cavity-127, upper fixing hole-128, lower fixing hole-129, upper fixing groove-130, lower fixing groove-131, upper mounting hole-132, lower mounting hole-133, key installation groove-134, key cap-135, shaft body-136, column body-137, limit plate-138, limit block-139, rechargeable battery-140, circuit board-141, gamepad-142, charging port-143, lamp strip-144, multicolor LED indicator-145. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] Please refer to Figures 1-8The utility model provides an audio transmitter of portable charging type, including the transmitter body 100 inserted on the main device 108, transmitter body 100 includes the shell 101, the control module 102 set up in the shell 101, the signal plug 103 with control module 102 electricity is connected, the power supply piece 104 with control module 102 electricity is connected and is used to make the shell 101 with the fixed location of main device 108 the fixed column 105;

[0039] The control module 102 is used to convert the target analog audio signal received by the signal plug 103 into a digital audio signal, and can transmit the digital audio signal wirelessly.

[0040] The signal plug 103 is used to connect with the signal output socket on the main device 108.

[0041] The power supply piece 104 is used to provide a power supply circuit independent of the main device 108 for the control module 102.

[0042] The fixed column 105 is fixedly arranged on the shell 101 and arranged on the same side as the signal plug 103.

[0043] The audio transmitter of the utility model realizes the continuous and stable work of the device in the power supply environment of the main device 108 by integrating the power supply piece 104 and the signal processing module, effectively avoids the problem of signal transmission abnormality caused by unstable power supply of the main device 108, and the structure characteristic that the fixed column 105 and the signal plug 103 are designed on the same side can form bidirectional mechanical support when being inserted, which ensures the close contact of the signal plug 103 and the socket of the main device 108 to reduce signal loss.

[0044] The wireless transmission function is compatible with mainstream audio receiving equipment (such as wireless earphones), cooperates with analog-digital signal conversion technology, can expand the wireless application scene of traditional analog audio equipment while ensuring high-fidelity sound transmission, and the overall scheme has power supply autonomy, connection reliability and operation portability, which significantly improves the use experience of the main device 108 in the mobile scene.

[0045] In the utility model embodiment, the front end face of the shell 101 is provided with a first arc-shaped mounting surface 110 for abutting with the rear end face of the handle, and the first arc-shaped mounting surface 110 comprises a plane part 111 arranged in the middle and arc surface parts 112 symmetrically arranged on both sides of the plane part 111.

[0046] The shell 101 structure of the audio transmitter is matched with the rear end surface profile of the handle in a combined mode of the middle plane part 111 and the two side arc surface parts 112 through the first arc-shaped mounting surface 110 arranged on the front end surface, gapless assembly of the fitting surface is realized, the connection stability and stress uniformity of the shell 101 and the handle are effectively improved, the arc surface parts 112 symmetrically distributed can disperse stress concentration caused by external impact while enhancing the circumferential covering property, the risk of structural deformation is reduced, the plane part 111 provides a rigid support reference surface for the key connecting component, the axial alignment accuracy in the signal transmission process is ensured, the overall design takes into account the assembly guiding property, the interface adaptation degree and the structural pressure resistance, and the reliability and service life of the equipment in the dynamic use scenario are significantly improved.

[0047] In the utility model embodiment, the upper limit boss 113 and the lower limit boss 114 are respectively formed at the connection of the first arc-shaped mounting surface 110 and the upper end surface and the lower end surface of the shell 101, the installation position 115 is formed between the upper limit boss 113 and the lower limit boss 114, the height of the installation position 115 and the height of the rear end of the main equipment 108 are mutually matched, the connection of the upper limit boss 113 and the first arc-shaped mounting surface 110 is provided with the first transition inclined surface 117 and the second transition inclined surface 118 connected with each other.

[0048] The shell 101 of the audio transmitter is provided with the limit boss with the height matched with the rear end of the handle on the upper and lower ends of the first arc-shaped mounting surface 110, the installation position 115 structure in the vertical direction is formed, so that accurate positioning is realized when the shell 101 is inserted with the handle, and assembly misalignment or poor contact caused by vertical displacement is avoided.

[0049] The cooperation of the upper and lower limit bosses 114 and the arc-shaped mounting surface not only improves the transverse fitting degree through the arc profile, but also enhances the longitudinal shear resistance through the vertical limiting of the upper limit boss 113 and the lower limit boss 114, so as to ensure the mechanical stability of the connection interface under dynamic load.

[0050] The size matching design of the height of the installation position 115 and the handle can eliminate the assembly redundant gap, reduce the structural wear and abnormal sound risk in the vibration environment, the double boss structure also improves the overall deformation resistance of the shell 101 by dispersing stress, and synchronously optimizes the smoothness of equipment operation and the durability of long-term use.

[0051] The shell 101 of the audio transmitter is provided with the double transition inclined surface structure additionally arranged at the connection of the upper limit boss 113 and the first arc-shaped mounting surface 110, a gradual force line transition interface is formed, and the risk of local deformation or cracking caused by corner stress concentration in the assembly process is effectively eliminated.

[0052] The first and second transition inclined surfaces 118 guide the insertion path of the shell 101 and the handle in a continuous and smooth geometry, reduce the friction resistance and improve the assembly smoothness, and enhance the axial pre-tightening force through the self-guiding effect of the inclined surfaces, thereby further optimizing the sealing performance and vibration resistance of the contact interface.

[0053] The double-inclined surface design also disperses the impact of the handle dynamic load on the boss root by expanding the stress distribution area, thereby significantly improving the fatigue strength and long-term reliability of the shell 101 and the handle connection structure.

[0054] In the embodiment of the utility model, the front end face of the shell 101 is provided with a fixed mounting hole 119, the fixed column 105 is arranged in the fixed mounting hole 119, an auxiliary fixing groove 120 is arranged on the inner wall of the fixed mounting hole 119, and the rear end of the fixed column 105 is fixedly provided with an auxiliary fixing protrusion 121 limited in the auxiliary fixing groove 120.

[0055] The nested design of the fixed mounting hole 119 and the auxiliary fixing groove 120 of the shell 101 of the utility model audio transmitter forms a bidirectional mechanical constraint by means of the clamping and limiting of the auxiliary fixing protrusion 121 during assembly, effectively improves the anti-torsion and anti-axial displacement performance between the fixed column 105 and the shell 101, the wrapping type fixing of the auxiliary fixing groove 120 on the protrusion can disperse the shear stress in the plugging process, avoids the fracture or loosening phenomenon easily occurred in the traditional rigid connection, and the precise size matching of the auxiliary fixing protrusion 121 and the auxiliary fixing groove 120 ensures that the quick alignment and installation can be realized without additional positioning tools during assembly.

[0056] In the embodiment of the utility model, the signal plug 103 includes an earphone plug 122 fixedly arranged on the control module 102, the front end face of the shell 101 is provided with a plug mounting hole 123, the earphone plug 122 extends out of the plug mounting hole 123, and a fastening ring 124 is fixedly sleeved on the earphone plug 122 and tightly matched in the plug mounting hole 123.

[0057] The composite fixing structure of the plug mounting hole 123 and the fastening ring 124 of the shell 101 of the utility model audio transmitter makes the earphone plug 122 obtain double mechanical anchoring during plugging and unplugging, the interference fit between the fastening ring 124 and the inner wall of the plug mounting hole 123 forms a radial pressure seal, effectively suppresses the contact resistance fluctuation caused by the plug shaking, and guarantees the stability of the audio signal transmission;

[0058] The basic positioning of the plug root by the plug mounting hole 123 and the elastic clamping of the fastening ring 124 can absorb the transverse stress generated by the external cable pulling, and prevent the fatigue fracture of the welding point;

[0059] The split type fastening ring 124 is designed to allow the earphone plug 122 to be quickly positioned and locked during assembly, and the detachable characteristic facilitates later maintenance or replacement, the overall structure is reinforced through dynamic stress dispersion and static sealing, and the vibration resistance and plug durability of the plug interface are significantly improved, and the service life of the equipment in a high-frequency dynamic use scenario is prolonged.

[0060] In the embodiment of the utility model, the shell 101 includes the upper shell 125 and the lower shell 126 which are buckled to each other, the mounting cavity 127 is formed in cooperation between the upper shell 125 and the lower shell 126, the fixed mounting hole 119 includes the upper fixed hole 128 and the lower fixed hole 129 which are respectively arranged on the opposite surfaces of the upper shell 125 and the lower shell 126, and the auxiliary fixing groove 120 includes the upper fixing groove 130 and the lower fixing groove 131 which are respectively arranged on the opposite surfaces of the upper shell 125 and the lower shell 126.

[0061] The shell 101 of the audio transmitter adopts the split type structure of the upper and lower shells 126 which are buckled to each other, the continuous auxiliary fixing groove 120 is formed by the precise butt joint of the upper and lower fixing grooves 131 when the mold is closed, the bidirectional synchronous limiting of the auxiliary fixing protrusion 121 of the fixed column 105 is realized, and the assembly concentricity and clamping reliability are greatly improved.

[0062] The mounting cavity 127 formed by the buckling of the upper and lower shells 126 provides full-enclosing support for the fixed column 105, and the bidirectional clamping action of the split groove on the fixed column 105 and the auxiliary fixing protrusion 121 makes the fixed column 105 still balanced in force when it is axially vibrated or laterally twisted, significantly enhances the shear resistance and fatigue strength of the connection structure, and the plug-in assembly mechanism of the upper and lower shells 126 also simplifies the mold complexity and improves the production yield, and the structural strength optimization and manufacturing cost control are considered.

[0063] In the embodiment of the utility model, the plug mounting hole 123 includes the upper mounting hole 132 and the lower mounting hole 133 which are respectively arranged on the opposite surfaces of the upper shell 125 and the lower shell 126.

[0064] The shell 101 of the audio transmitter splits the plug mounting hole 123 into the half-hole structure which is oppositely arranged on the upper and lower shells 126, forms the complete mounting hole with high coaxiality by the precise butt joint of the two half-holes when the mold is closed, ensures that the axis of the earphone plug 122 is perpendicular to the plug of the main equipment 108 when the earphone plug 122 is inserted, and avoids the wear of the pin or the signal distortion caused by the deflection.

[0065] The split type mounting hole design can respectively optimize the mold runner arrangement of the upper and lower shells 126, reduces the risk of tool deflection deformation during deep hole machining, improves the consistency of hole diameter size and the smoothness of hole wall, and the upper and lower mounting holes 133 are self-corrected and aligned when buckled through the guide structure, so that the contact surface between the plug root and the shell 101 forms a uniform annular support.

[0066] The cooperative clamping mechanism of the split hole and the fastening ring 124 can also compensate for the shrinkage deformation of the injection molding part, maintain the axial stability of the plug during long-term plugging, and achieve the synchronous improvement of the plug installation precision and the structural strength of the shell 101 while simplifying the processing technology.

[0067] In the embodiment of the utility model, the upper end face of the upper shell 125 is provided with a key mounting groove 134, a key cap 135 is arranged in the key mounting groove 134, a shaft body 136 is arranged on the control module 102, the lower end face of the key cap 135 is fixedly provided with a column body 137 and a limiting plate 138 surrounding the periphery of the column body 137, the column body 137 is used for touching and cooperating with the shaft body 136, the limiting plate 138 is used for sliding and limiting cooperation with the inner wall of the key mounting groove 134, and a limiting block 139 limiting and stopping cooperation in the key mounting groove 134 is formed on the lower end face of the limiting plate 138 along the periphery;

[0068] The limiting plate 138 of the key cap 135 and the inner wall of the mounting groove form a vertical guide channel in sliding cooperation, eliminate the lateral deflection in the key pressing process, ensure the accurate alignment of the contact point of the column body 137 and the shaft body 136 to reduce the false touch rate, the stop cooperation of the limiting block 139 and the bottom of the mounting groove can accurately control the key stroke end position, avoid damage to the shaft body 136 caused by overstroke, and at the same time provide clear pressing feedback feeling to optimize the operation feeling, the axial centering trigger mechanism of the column body 137 and the shaft body 136 cooperates with the circumferential constraint of the limiting plate 138, and can uniformly disperse the impact force generated by high-frequency pressing.

[0069] In the embodiment of the utility model, the power supply part 104 includes a charging battery 140, the charging battery 140 is arranged on the inner bottom face of the mounting cavity 127, the control module 102 includes a circuit board 141, and the circuit board 141 is arranged above the charging battery 140 to cooperate with the key mounting groove 134;

[0070] By adopting the upper and lower layered layout design of the charging battery 140 and the circuit board 141, the space utilization rate of the mounting cavity 127 is optimized, the charging battery 140 is arranged close to the inner bottom face to reduce the gravity center of the audio transmitter and improve the holding stability, and at the same time, the vertical alignment cooperation of the circuit board 141 and the key mounting groove 134 ensures that the key trigger signal transmission path is shortest, and signal delay and interference are reduced;

[0071] The layered structure reduces the heat conduction influence of battery heating on the components of the circuit board 141 through physical isolation, cooperates with the airflow channel inside the cavity to enhance the heat dissipation efficiency, and guarantees the operation stability under high load working conditions;

[0072] The three-dimensional space alignment design of the circuit board 141 and the key assembly can also realize accurate matching of the key stroke and the contact of the shaft body 136, avoid key response deviation caused by assembly tolerance, and comprehensively improve the sensitivity and structural durability of device operation.

[0073] In the embodiment of the utility model, the main device 108 includes a gamepad 142, the gamepad 142 is equipped with a charging port 143 electrically connected with the control module 102, the periphery of the key cap 135 is equipped with a lamp strip 144 electrically connected with the control module 102, and the upper end surface of the upper shell 125 is equipped with a multi-color LED indicator lamp 145 electrically connected with the control module 102.

[0074] The gamepad 142 is connected with the control module 102 through the special charging port 143, realizes seamless cooperation of the audio transmitter and the handle power supply system, so that the player can charge synchronously in the wireless audio transmission process, and completely solves the pain point that the device endurance and audio experience are difficult to balance in the game scene.

[0075] The integrated charging interface layout follows the ergonomic holding curve, avoiding the interference of the external charging cable on the control flexibility.

[0076] The ring-shaped lamp strip 144 around the periphery of the key cap 135 realizes real-time feedback of the key trigger state through color and brightness change, enhances the blind operation accuracy and immersive light effect experience, and the multi-color LED indicator lamp 145 of the upper shell 125 directly displays the wireless connection, charging mode and system fault state through the coded light combination, and improves the instant perception efficiency of user interaction information.

[0077] In one embodiment, the shell 101 adopts lightweight engineering plastic or aluminum alloy material, is compact in design, and has an interface shape conforming to the bottom of the XBOX handle, thereby being convenient for stable installation.

[0078] In one embodiment, the surface of the shell 101 adopts an anti-slip coating, improves the touch feeling, and avoids hand slipping during long-time use.

[0079] In one embodiment, the control module 102 is internally provided with a Bluetooth audio module (supporting Bluetooth 5.4 and above versions), realizes high-fidelity and low-delay audio signal transmission, and the delay is as low as 30 ms, and is suitable for various wireless earphones.

[0080] In one embodiment, the earphone plug 122 includes a 3.5 mm audio plug for connecting the XBOX handle audio output interface.

[0081] In one embodiment, the charging battery 140 includes a rechargeable lithium battery (capacity 500 mAh-1000 mAh), which can work continuously for 20 hours after single charging, and ensures long-time game experience.

[0082] In one embodiment, the audio transmitter supports TYPE-C fast charging function, the full charging time is not more than 1.5 hours, and has the function of charging while using.

[0083] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A portable rechargeable audio transmitter, characterized in that, The transmitter body (100) is plugged into the main device (108). The transmitter body (100) includes a housing (101), a control module (102) disposed in the housing (101), a signal plug (103) electrically connected to the control module (102), a power supply unit (104) electrically connected to the control module (102), and a fixing post (105) for fixing and limiting the housing (101) on the main device (108). The control module (102) is used to convert the target analog audio signal received by the signal plug (103) into a digital audio signal, and is capable of wirelessly transmitting the digital audio signal; The signal plug (103) is used to connect to the signal output port on the main device (108); The power supply unit (104) is used to provide the control module (102) with a power supply circuit independent of the main device (108); The fixing post (105) is fixed on the housing (101) and is located on the same side as the signal plug (103).

2. A portable rechargeable audio transmitter according to claim 1, characterized in that, The front end face of the housing (101) is provided with a first arc-shaped mounting surface (110) for fitting with the rear end face of the handle. The first arc-shaped mounting surface (110) includes a flat portion (111) in the middle and arc-shaped portions (112) symmetrically arranged on both sides of the flat portion (111).

3. A portable rechargeable audio transmitter according to claim 2, characterized in that, The connection between the first arc-shaped mounting surface (110) and the upper and lower end surfaces of the housing (101) is respectively formed with an upper limit boss (113) and a lower limit boss (114). An installation position (115) is formed between the upper limit boss (113) and the lower limit boss (114). The height of the installation position (115) matches the height of the rear end of the main equipment (108). The connection between the upper limit boss (113) and the first arc-shaped mounting surface (110) is provided with a first transition slope (117) and a second transition slope (118) that are connected to each other.

4. A portable rechargeable audio transmitter according to any one of claims 1-3, characterized in that, The front end face of the housing (101) is provided with a fixing hole (119), the fixing post (105) is installed in the fixing hole (119), the inner wall of the fixing hole (119) is provided with an auxiliary fixing groove (120), and the rear end of the fixing post (105) is fixed with an auxiliary fixing protrusion (121) that is limited and fixed in the auxiliary fixing groove (120).

5. A portable rechargeable audio transmitter according to claim 4, characterized in that, The signal plug (103) includes an earphone plug (122) fixed on the control module (102). The front end face of the housing (101) is provided with a plug mounting hole (123). The earphone plug (122) extends out from the plug mounting hole (123). A fastening ring (124) is fixedly sleeved on the earphone plug (122) and is fastened in the plug mounting hole (123).

6. A portable rechargeable audio transmitter according to claim 5, characterized in that, The housing (101) includes an upper housing (125) and a lower housing (126) that are interlocked. The upper housing (125) and the lower housing (126) cooperate to form an installation chamber (127). The fixing mounting hole (119) includes an upper fixing hole (128) and a lower fixing hole (129) respectively opened on the opposite surfaces of the upper housing (125) and the lower housing (126). The auxiliary fixing groove (120) includes an upper fixing groove (130) and a lower fixing groove (131) respectively opened on the opposite surfaces of the upper housing (125) and the lower housing (126).

7. A portable rechargeable audio transmitter according to claim 6, characterized in that, The plug mounting hole (123) includes an upper mounting hole (132) and a lower mounting hole (133) respectively opened on the opposite surfaces of the upper housing (125) and the lower housing (126).

8. A portable rechargeable audio transmitter according to claim 6 or 7, characterized in that, The upper end face of the upper housing (125) is provided with a key mounting groove (134), and a keycap (135) is installed in the key mounting groove (134). A shaft (136) is installed on the control module (102). A column (137) and a limiting plate (138) surrounding the column (137) are fixed on the lower end face of the keycap (135). The column (137) is used to contact and cooperate with the shaft (136), and the limiting plate (138) is used to slide and limit the cooperation with the inner wall of the key mounting groove (134). A limiting block (139) is formed along the periphery of the lower end face of the limiting plate (138) to limit and stop the cooperation in the key mounting groove (134).

9. A portable rechargeable audio transmitter according to claim 8, characterized in that, The power supply unit (104) includes a rechargeable battery (140), which is installed on the inner bottom surface of the mounting chamber (127). The control module (102) includes a circuit board (141), which is installed above the rechargeable battery (140) to align and cooperate with the button mounting slot (134).

10. A portable rechargeable audio transmitter according to claim 9, characterized in that, The main device (108) includes a game controller (142), which has a charging port (143) electrically connected to the control module (102). The periphery of the keycap (135) is equipped with a light strip (144) electrically connected to the control module (102), and the upper surface of the upper housing (125) is equipped with a multi-color LED indicator (145) electrically connected to the control module (102).

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