A signal transmitter

Abstract

The present invention discloses a signal transmitter, including a shell, a mounting seat and a USB terminal seat. The shell, the mounting seat and the USB terminal seat are coaxially arranged. The shell has a closed end and an open end along the axial direction, respectively. The axial direction of the accommodating cavity in the shell is consistent with the length direction of the shell. The accommodating cavity is connected to the opening of the open end. The mounting seat is installed in the accommodating cavity. The mounting seat is provided with a fixed plate structure on the side facing the closed end, and a ring structure is provided on the side of the mounting seat away from the closed end. The USB terminal seat is engaged with the open end of the shell. The side of the USB terminal seat close to the shell is provided with a first ring structure, and the side of the USB terminal seat away from the shell is provided with a second ring structure. The first ring structure is inserted into the accommodating cavity through the opening. The signal transmitter of the present invention has an ingenious structural design, can be quickly disassembled and assembled, and is provided with a fool-proof structure, which can effectively prevent the USB terminal from being damaged due to wrong insertion or misinsertion. At the same time, it is also equipped with a dust cover, which can be used to prevent dust and other dirt from falling into the USB female terminal or the USB terminal seat.

Description

Technical Field

[0001] The present invention relates to the technical field of signal transmitters, and in particular to a signal transmitter. Background Art

[0002] With the continuous development of electronic technology, data transmission technology has gradually changed from wired transmission to wireless transmission, which effectively solves the problem of data transmission being affected by the length of the wire. In a wireless data transmission system, a signal transmitter is inevitably required as the main body of signal transmission, but the traditional signal transmitter has an unreasonable structural design and is troublesome to disassemble and assemble.

[0003] In addition, most of the mainstream signal transmitters on the market currently use USB male and female terminals to achieve power supply or data transmission. Due to their structural design, they often cannot be connected quickly and accurately when connecting the USB male and female terminals. Phenomena such as reverse insertion or inability to insert often occur. As the number of uses increases or the user uses too much force, the USB male and female terminals will be damaged, which will lead to poor connection of the signal transmitter and affect the user experience.

[0004] Therefore, in view of the above-mentioned existing technical problems, it is necessary to propose a new technical solution. Summary of the invention

[0005] The purpose of the present invention is to provide a signal transmitter, which can realize quick disassembly and assembly of the signal transmitter through ingenious structural design, and can effectively prevent the USB male and female terminals from being damaged due to wrong insertion or misinsertion by setting a foolproof structure. At the same time, the signal transmitter of the present invention is also equipped with a dust cover, and when the signal transmitter body is removed from the USB terminal seat, the dust cover can be snapped on the USB terminal seat to prevent dust and other dirt from falling into the USB female terminal or the USB terminal seat.

[0006] In order to achieve the purpose of the invention, the present invention provides a signal transmitter, which includes a shell, a mounting base and a USB terminal base, the shell, the mounting base and the USB terminal base are coaxially arranged, the shell has a closed end and an open end along its axial direction respectively, the shell has a accommodating cavity, the axial direction of the accommodating cavity is consistent with the length direction of the shell, the accommodating cavity is connected with the opening of the open end, the mounting base is installed in the accommodating cavity, the mounting base is provided with a fixed plate structure on the side facing the closed end, the mounting base is provided with a ring structure on the side away from the closed end, the USB terminal base is clamped in the open end of the shell, the USB terminal base is provided with a first ring structure on the side close to the shell, and the USB terminal base is provided with a second ring structure on the side away from the shell, and the first ring structure is inserted into the accommodating cavity through the opening.

[0007] Furthermore, the shell is provided with a buckle structure on the inner wall near the opening end, and the mounting seat is provided with an elastic claw. When the mounting seat is installed in the accommodating cavity, the elastic claw can be engaged with the buckle structure.

[0008] Furthermore, a mounting through hole is provided on the mounting base, the axial direction of the mounting through hole is consistent with the axial direction of the mounting base, the card board structure is formed with a fixing board groove, and a card board groove is provided on the inner wall of the shell corresponding to the position of the fixing board groove. The signal transmitter also includes a first circuit board, and a USB male terminal is installed at one end of the first circuit board. One end of the first circuit board is fixed in the fixing board groove, and the USB male terminal is located in the mounting through hole. When the mounting base is installed in the accommodating cavity, the first circuit board is inserted into the card board groove.

[0009] Furthermore, the length direction of the plate fixing groove is consistent with the length direction of the mounting seat, and the plate fixing groove is eccentrically arranged in the width direction of the mounting seat.

[0010] Furthermore, the USB terminal seat is provided with a plurality of claws on one side of the first annular structure, and the shell is provided with notches corresponding to the positions of the claws. When the shell is engaged on the USB terminal seat, the claws can be engaged with the corresponding notches.

[0011] Furthermore, a mounting hole is provided on the USB terminal seat, and the axial direction of the mounting hole is consistent with the axial direction of the USB terminal seat. A third annular structure is also provided in the area enclosed by the first annular structure, and the third annular structure extends outward from the bottom of the area enclosed by the first annular structure, and the inner wall of the third annular structure is flush with the inner wall of the mounting hole. The signal transmitter also includes a second circuit board, and a USB female terminal is installed on the second circuit board. The second circuit board is installed in the area enclosed by the second annular structure, and the USB female terminal is located in the mounting hole. When the shell is engaged on the USB terminal seat, the third annular structure is inserted into the area enclosed by the annular structure of the mounting seat located in the accommodating cavity, and the third annular structure conflicts with the bottom end of the area enclosed by the annular structure, and the USB male terminal is connected to the USB female terminal.

[0012] Furthermore, an anti-foolproof rib is arranged between the inner wall of the first annular structure and the outer wall of the third annular structure, and an anti-foolproof notch is opened in the annular structure corresponding to the position of the anti-foolproof rib, wherein during the engagement process of the shell and the USB terminal seat, if the anti-foolproof notch is not aligned with the anti-foolproof rib, the USB male terminal is not connected to the USB female terminal, and the claw is not engaged with the slot.

[0013] Furthermore, it also includes a sealing ring and a sealing gasket, at least one annular groove is provided on the outer wall of the first annular structure, the axial direction of the annular groove is consistent with the axial direction of the first annular structure, and the sealing ring is sleeved in the annular groove; the USB terminal seat is provided with at least one protrusion structure with a set shape on one side of the second annular structure, the sealing gasket is sleeved on the second annular structure, a through hole corresponding to the protrusion structure is opened on the sealing gasket, and the thickness of the sealing gasket is greater than the height of the protrusion structure.

[0014] Furthermore, a switch element and a plurality of light-emitting elements are installed on the first circuit board, a switch structure is provided on the outer shell at a position corresponding to the switch element, and a light guide column is installed on the outer shell at a position corresponding to the light-emitting element; the light guide column comprises a light guide main body part and a light guide limiting part in sequence, the diameter of the light guide limiting part is larger than the diameter of the light guide main body part, and a plurality of interference ribs are provided on the outer wall of the light guide main body part near the position of the light guide limiting part.

[0015] Furthermore, it also includes a nut, the outer wall surface of the second annular structure is provided with a threaded structure, and the nut is mounted on the second annular structure; it also includes a dust cover, and the dust cover can be snapped on the side of the USB terminal seat where the first annular structure is provided.

[0016] Compared with the prior art, the signal transmitter of the present application has one or more of the following beneficial effects:

[0017] (1) The signal transmitter of the present application has a mounting base and a housing connected by a snap-fit ​​connection, which can be quickly disassembled and assembled;

[0018] (2) The signal transmitter of the present application has an anti-mistake structure between the signal transmitter body and the USB terminal seat, which can effectively prevent damage to the USB terminal due to wrong or erroneous insertion;

[0019] (3) The signal transmitter of the present application is equipped with a dust cover. After removing the signal transmitter body, the USB female terminal or the USB terminal seat can be shielded by the dust cover to prevent dust and other dirt from falling in;

[0020] (4) The signal transmitter of the present application has an opening end of the housing, a boss provided on one side of the fixing plate structure of the mounting seat, a first annular structure of the USB terminal seat, a bottom surface of the area enclosed by the second annular structure of the USB terminal seat, and an opening end of the sealing cover, which are designed to effectively prevent product deformation;

[0021] (5) The signal transmitter of the present application has multiple chamfers on each sub-component, which can ensure smooth assembly between the sub-components;

[0022] (6) The signal transmitter of the present application has an anti-slip structure on its dust cover and claws, which can ensure that the user can smoothly remove the dust cover or shell;

[0023] (7) The signal transmitter of the present application is provided with a sealing ring to ensure the sealing between the housing and the USB terminal seat;

[0024] (8) The signal transmitter of the present application is provided with a sealing gasket, and a protrusion with a set shape is provided on one side of the USB terminal seat where the sealing gasket is installed, and the thickness of the sealing gasket is greater than the height of the protrusion. With such a design, on the one hand, the protrusion can play the role of radially limiting the sealing gasket to prevent the sealing gasket from rotating, and on the other hand, it can play the role of axial limiting to prevent the sealing gasket from being excessively squeezed and damaged when the USB terminal seat is installed;

[0025] (9) The signal transmitter of the present application has a shell side wall with a plurality of through holes for installing the light guide column, and the inner wall of the through hole is provided with a plurality of installation grooves, which can be interference fit with the interference ribs on the outer wall of the light guide column, thereby realizing the rapid disassembly and assembly of the light guide column. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a signal transmitter provided in an embodiment of the present application;

[0027] Figure 2 An exploded schematic diagram of a signal transmitter provided in an embodiment of the present application;

[0028] Figure 3 A schematic cross-sectional view of a signal transmitter provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the structure of the housing of the signal transmitter provided in an embodiment of the present application in one direction;

[0030] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0031] Figure 6 A schematic diagram of the structure of the housing of the signal transmitter provided in an embodiment of the present application in another direction;

[0032] Figure 7 A schematic diagram of the structure of a mounting base of a signal transmitter provided in an embodiment of the present application in one direction;

[0033] Figure 8 A schematic diagram of the structure of the mounting base of the signal transmitter provided in an embodiment of the present application in another direction;

[0034] Fig. 9A schematic diagram of the structure of the mounting base of the signal transmitter provided in an embodiment of the present application in the length direction;

[0035] Fig.10 A schematic diagram of the structure of a USB terminal block of a signal transmitter provided in an embodiment of the present application in one direction;

[0036] Fig.11 A schematic diagram of the structure of the USB terminal seat of the signal transmitter provided in an embodiment of the present application in another direction;

[0037] Fig.12 A schematic diagram of the structure of the USB terminal block of the signal transmitter provided in an embodiment of the present application in the length direction;

[0038] Fig.13 A schematic diagram of the structure of a light guide column of a signal transmitter provided in an embodiment of the present application;

[0039] Fig.14 A schematic diagram of the installation position between two circuit boards of a signal transmitter provided in an embodiment of the present application;

[0040] Fig.15 A schematic diagram of the structure of a USB terminal block of a signal transmitter provided in an embodiment of the present application when a dust cover is installed;

[0041] Fig.16 A schematic diagram of the structure of a dust cover of a signal transmitter provided in an embodiment of the present application in one direction;

[0042] Fig.17 A schematic diagram of the structure of the dust cover of the signal transmitter provided in an embodiment of the present application in another direction.

[0043] Among them, 1-housing, 10-notch, 11-first card board protrusion, 111-first card board slot, 12-second card board protrusion, 121-second card board slot, 13-support protrusion, 14-countersunk hole, 15-buckle structure, 151-card protrusion, 16-first through hole, 17-second through hole, 171-installation groove, 18-switch structure, 181-touch protrusion, 19-groove, 2-mounting seat, 20-main body, 201-claw groove, 21-installation through hole, 22-fixed plate structure, 221-fixed plate ear, 222-fixed plate hole, 223-fixed plate slot, 224-long protrusion, 23-ring structure, 231-anti-foolproof notch, 24-elastic claw, 241-elastic support part, 242-clamping part, 243-pressing part, 244-card table, 25-limiting groove, 26-boss, 3-USB terminal seat, 30-seat body, 31-mounting hole, 32-first annular structure, 321-annular groove, 322-long groove, 33-second annular structure, 331-threaded structure, 332-countersunk hole, 333-limiting column, 34-claw, 341-card convex, 342-anti-slip structure, 35-third annular structure, 36-anti-stupid rib, 37-raised structure, 38-sealing ring, 4-nut, 5-sealing pad, 6-light guide column, 61-light guide main body, 62-light guide limiting part, 63-interference rib, 7-dust cover, 70-slot, 71-anti-slip structure, 72-countersunk hole, 8-first circuit board, 81-USB male terminal, 82-switching element, 83-light-emitting element, 9-second circuit board, 91-USB female terminal. DETAILED DESCRIPTION

[0044] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0045] Example

[0046] This embodiment provides a signal transmitter, which includes a housing 1, a mounting base 2 and a USB terminal base 3. Figures 1 to 3 shown.

[0047] like Figure 4 As shown, the housing 1 preferably adopts a flat cylindrical structure, and the housing 1 has a closed end and an open end along its length direction. The housing 1 has a receiving cavity, the axial direction of the receiving cavity is consistent with the length direction of the housing 1, and the receiving cavity is connected to the opening of the open end. The open end is provided with a plurality of notches 10, and the axial direction of the notches 10 is consistent with the length direction of the housing 1.

[0048] like Figure 6As shown, a plurality of limiting protrusions are provided on the inner wall of the housing 1, and the length direction of the limiting protrusions is consistent with the length direction of the housing 1. The limiting protrusions include a first clamping plate protrusion 11, a second clamping plate protrusion 12 and a supporting protrusion 13.

[0049] The first card protrusions 11 are grouped into two groups, and the two groups of the first card protrusions 11 are symmetrically arranged on the inner walls on both sides of the width direction of the housing 1, and the two first card protrusions 11 in each group are arranged at intervals to form a first card groove 111. The lengths of the two first card protrusions 11 in each group are the same. Figure 3 As shown. Of course, the lengths of the two first card protrusions 11 in each group may also be different. The first card protrusion 11 is chamfered at one end corresponding to the opening end of the housing 1, and in each group of the two first card protrusions 11, the chamfer direction of one first card protrusion 11 faces the other first card protrusion 11.

[0050] The second clamping plate protrusions 12 are arranged in groups of two on the inner wall of the closed end, and the two second clamping plate protrusions 12 in each group are arranged at intervals to form a second clamping plate groove 121. The position of the second clamping plate groove 121 is arranged corresponding to the position of the first clamping plate groove 111. Multiple groups of second clamping plate protrusions 12 are arranged on the inner wall of the closed end, and the multiple groups of second clamping plate protrusions 12 are arranged at intervals along the width direction of the housing 1. Figure 3 and Figure 6 As shown, preferably two groups of the second card protrusions 12 are provided. The second card protrusion 12 is chamfered at one end corresponding to the opening end of the housing 1, and in each group of two second card protrusions 12, the chamfer direction of one second card protrusion 12 faces the other second card protrusion 12.

[0051] A plurality of support protrusions 13 are arranged at intervals on the inner wall of the housing 1. Figure 6 As shown, four supporting protrusions 13 are preferably provided, and the four supporting protrusions 13 are symmetrically distributed in the four corner directions of the accommodating cavity of the shell 1. The supporting protrusion 13 is aligned with the first clamping plate protrusion 11 whose one end is closest to the opening end of the shell 1 at a position close to the opening end of the shell 1, and together play a role in limiting the mounting seat 2 in the axial direction to prevent the mounting seat 2 from being excessively installed. Figure 6 The cross-sectional shape of the support protrusion 13 schematically shown in the figure is a rectangle, and one side of the rectangle is arranged parallel to the inner wall of the shell. It should be noted that, in a specific implementation, the cross-sectional shape of the support protrusion 13 can be any shape, and in the case of a rectangle, one side of the rectangle may not be parallel to the inner wall of the shell, for example, it may be consistent with the length direction of the shell or the width direction of the shell, etc.

[0052] The main body of the housing 1 is between the open end and the closed end. The outer diameter of the open end is larger than the outer diameter of the main body. Figure 4 As shown, the opening end and the main body form a transition area on the outer wall of the housing 1, and the notch 10 runs through the opening end and the transition area respectively. The notch 10 is preferably provided in two, and the two notches 10 are symmetrically arranged on both sides of the opening in the width direction of the housing 1, and the notch 10 is provided with a chamfer at the inner corner of the opening end away from the opening.

[0053] The housing 1 is also provided with a buckle structure 15 on the inner wall near the opening end. Preferably, two buckle structures 15 are provided, and the two buckle structures 15 are symmetrically provided on the inner walls on both sides of the housing 1 in the thickness direction. Figure 6 As shown, the buckle structure 15 preferably adopts a buckle convex 151. Of course, the buckle structure 15 can also be in other shapes, such as a buckle ear, which is a plate-like structure arranged perpendicular to the inner wall of the shell 1, and a buckle hole is opened in the buckle, and the axial direction of the buckle hole is consistent with the axial direction of the shell 1. In specific implementation, the two buckle structures 15 on the inner wall of the shell 1 can all be buckle convex 151, or all can be buckles, or one buckle ear and one buckle convex 151, etc.

[0054] The housing 1 is provided with a plurality of through holes of a predetermined shape. Figure 4 As shown, the through hole includes a first through hole 16 and a plurality of second through holes 17, and preferably three second through holes 17 are provided. A groove 19 of a set shape is provided on the outer wall of the housing 1, preferably in a runway shape. The first through hole 16 and the second through hole 17 are respectively located in the groove 19. The first through hole 16 and the second through hole 17 are located on the same side of the housing 1, and the first through hole 16 and the plurality of second through holes 17 are preferably spaced apart along the length direction of the housing 1. The first through hole 16 is U-shaped, so that the housing 1 forms a switch structure 18 on its side wall. The U-shaped shape shown in the figure is composed of two parallel and spaced linear through holes and a semicircular through hole, and an elastic support portion 241 of the switch structure 18 is formed between the two linear through holes, and a pressing portion of the switch structure 18 is formed in the semicircular through hole. A touch protrusion 181 of a set shape is provided on the side of the pressing portion of the switch structure 18 away from the accommodating cavity, which can facilitate the user to identify and press the switch structure 18. The second through hole 17 is a countersunk hole. A plurality of installation grooves 171 are provided on the inner wall of the second through hole 17. The length direction of the installation grooves 171 is consistent with the axial direction of the second through hole 17. Figure 5 A light guide column 6 is pressed into the second through hole 17. Fig.13As shown, the light guide column 6 includes a light guide main body part 61 and a light guide limit part 62 in sequence. The diameter of the light guide limit part 62 is larger than the diameter of the light guide main body part 61, and a plurality of interference ribs 63 are provided at intervals on the outer wall of the light guide main body part 61 near the position of the light guide limit part 62. When the light guide column 6 is pressed into the second through hole 17, the interference ribs 63 on the light guide column 6 are interference-fitted with the mounting groove 171 in the second through hole 17, the light guide main body part 61 passes through the second through hole 17 and is inserted into the accommodating cavity of the housing 1, and the light guide limit part 62 is located in the countersunk hole around the second through hole 17, which can effectively ensure the installation reliability of the light guide column 6.

[0055] In a further embodiment, a plurality of countersunk holes 14 are provided at the opening end, and the plurality of countersunk holes 14 are arranged around the opening. Figure 6 As shown. That is, the opening end is designed for stealing materials to prevent deformation of the opening end of the shell 1 due to the thicker wall thickness near the opening end and the inconsistent cooling time of the material with other parts of the shell 1 during the production process. At least one annular groove can be opened on the outer wall of the shell 1 near the closed end to achieve a certain decorative effect.

[0056] The mounting seat 2 is installed in the accommodating cavity. Figures 7 to 9 As shown, the mounting seat 2 includes a plate-like main body 20. The main body 20 is provided with a mounting through hole 21 along its thickness direction, and the mounting through hole 21 is preferably a rectangular through hole. The main body 20 is provided with a fixed plate structure 22 on one side of its thickness direction. The main body 20 is provided with an annular structure 23 on the other side of its thickness direction, and the annular structure 23 extends outward from the side of the main body 20. The axial direction of the annular structure 23 is consistent with the thickness direction of the main body 20, and the mounting through hole 21 is located in the area surrounded by the annular structure 23. The main body 20 is provided with elastic claws 24 on both sides of its width direction. When the mounting seat 2 is installed in the accommodating cavity, the fixed plate structure 22 faces the closed end of the shell 1, and the elastic claws 24 can be engaged with the buckle structure 15.

[0057] The side surface of the main body 20 of the mounting seat 2 provided with the annular structure 23 is inwardly recessed with a limiting groove 25 of a set shape. The side surface of the main body 20 provided with the fixing plate structure 22 is formed with a boss 26 at a position corresponding to the limiting groove 25. The mounting through hole 21 is located in the limiting groove 25 and passes through the boss 26. The annular structure 23 is arranged around the limiting groove 25, and the inner wall of the annular structure 23 is flush with the side wall of the limiting groove 25.

[0058] In a further embodiment, the annular structure 23 is provided with a foolproof notch 231, such as Figure 7 and Figure 8 As shown. The mounting base 2 schematically shown in the figure, the area surrounded by its annular structure 23, that is, the area where the limiting groove 25 is recessed, forms a step-like structure at the position of the anti-fool notch 231. However, in a specific implementation, the recessed area of ​​the limiting groove 25 is not limited to the area surrounded by the annular structure 23, and the limiting groove 25 can also extend outward from the position of the anti-fool notch 231, that is, the main body 20 of the mounting base 2 is recessed downward at the corresponding position of the anti-fool notch 231 and the area surrounded by the annular structure 23 to form a limiting groove 25. The inner corner position of the annular structure 23 away from the end of the main body 20 and the corner position of the anti-fool notch 231 are respectively provided with chamfers, which can ensure that the signal transmitter main body 20 can be smoothly installed on the USB terminal seat 3. The signal transmitter main body 20 is the shell 1, the mounting base 2 and some components in the shell 1. The outer corners of the boss 26 are designed to be chamfered and stepped, that is, the boss 26 is designed to be stealing material, to ensure that the thickness of the boss 26 is not too thick, to prevent the boss 26 from being too thick and cooling slower than other positions of the mounting seat 2 during the production process, thereby causing deformation, and further causing deformation of the mounting through hole 21. The inner corners of the boss 26 are also chamfered.

[0059] The plate fixing structure 22 is composed of a plurality of plate fixing ears 221. The plate fixing structure 22 is a plate-like structure. The plate fixing ears 221 are arranged perpendicular to the main body 20, the width direction of the plate fixing ears 221 is consistent with the length direction of the main body 20, and the thickness direction of the plate fixing ears 221 is consistent with the width direction of the main body 20. A plate fixing hole 222 is provided on the plate fixing ear 221, and the axial direction of the plate fixing hole 222 is consistent with the thickness direction of the plate fixing ear 221. A plurality of plate fixing ears 221 are grouped into two groups, and a plurality of groups of plate fixing ears 221 are symmetrically arranged on both sides of the mounting through hole 21 in the length direction of the main body 20. The two plate fixing ears 221 in each group are spaced apart along the width direction of the main body 20 to form a plate fixing groove 223, that is, the length direction of the plate fixing groove 223 is consistent with the length direction of the mounting seat 2. The fixing plate groove 223 corresponds to the first cardboard groove 111 or the second cardboard groove 121 of the inner wall of the outer shell 1, and the fixing plate groove 223 is set off-axis in the width direction of the mounting seat 2. The off-axis design can play an anti-mistake role and avoid the wrong direction when the mounting seat 2 is installed in the outer shell 1. The fixing plate holes 222 of the two fixing plate ears 221 in each group are set in corresponding positions, and the corners of the opposite surfaces of the two fixing plate ears 221 in each group are chamfered. A plurality of long protrusions 224 are respectively provided on the opposite surfaces of the two fixing plate ears 221 in each group, and the length of the long protrusion 224 is consistent with the length direction of the fixing plate ears 221. Preferably, two groups of fixing plate ears 221 are provided on one side of the main body 20 of the mounting seat 2, and each fixing plate ear 221 is provided with two long protrusions 224, and the two long protrusions 224 are respectively located on both sides of the fixing plate hole 222, such as Figure 7 shown.

[0060] The signal transmitter further comprises a first circuit board 8, one end of which is provided with a USB male terminal 81. Fig.14As shown. One end of the first circuit board 8 is fixed in the fixing plate groove 223, and the USB male terminal 81 is located in the mounting through hole 21. The first circuit board 8 is preferably a long strip circuit board, and one end of the first circuit board 8 is also provided with a fixing plate hole 222 corresponding to the position of the fixing plate hole 222 on the fixing plate ear 221. During installation, one end of the first circuit board 8 with the fixing plate hole 222 is inserted into the fixing plate groove 223, and then one end of the first circuit board 8 is fixed in the fixing plate groove 223 by fasteners such as rivets. The long protrusion 224 is provided on the opposite surfaces of the two fixing plate ears 221, which can effectively ensure the installation reliability of the first circuit board 8. When the mounting seat 2 is installed in the accommodating cavity, the first circuit board 8 is inserted into the first cardboard groove 111, and the other end of the first circuit board 8 is inserted into the second cardboard groove 121 to clamp the first circuit board 8. Chamfers are provided on the first card protrusion 11, the second card protrusion 12 and the fixing ear 221 in the housing 1, respectively, to ensure that the first circuit board 8 can be installed smoothly. A switch element 82 and a plurality of light-emitting elements 83 are also installed on the first circuit board 8. When the first circuit board 8 is installed in the accommodating cavity of the housing 1, the switch element 82 corresponds to the pressing portion of the switch structure 18 on the housing 1, and the light-emitting element 83 corresponds one-to-one to the light guide column 6 installed on the housing 1.

[0061] In a further embodiment, the main body 20 of the mounting seat 2 is provided with claw grooves 201 on both sides of the width direction, and the elastic claw 24 is located in the claw grooves 201. Figure 7 and Figure 8 The elastic claw 24 includes an elastic support portion 241, a clamping portion 242 and a pressing portion 243, and the elastic claw 24 is connected to the main body 20 via the elastic support portion 241. Fig. 9As shown, the figure schematically shows an elastic claw 24 structure, the cross-sectional shape of the elastic support portion 241 of the elastic claw 24 is V-shaped, and the opening direction of the elastic support portion 241 is consistent with the extension direction of the annular structure 23. One end of the elastic support portion 241 is connected to the main body 20, and the other end of the elastic support portion 241 is connected to one end of the clamping portion 242. The other end of the clamping portion 242 is bent toward the direction close to the mounting through hole 21, and a notch is provided on the outer side of the connection between the elastic support portion 241 and the clamping portion 242 to form a clamping platform 244. One end of the pressing portion 243 is connected to the other end of the clamping portion 242, and the other end of the pressing portion 243 is bent toward the direction where the annular structure 23 is provided on the main body 20. Cooperating with the elastic claw 24 of this shape is the latching protrusion 151 provided on the inner wall of the shell 1. When the mounting base 2 is installed in the accommodating cavity of the shell 1, the elastic supporting portion 241 of the elastic claw 24 first contacts the latching protrusion 151. As the mounting base 2 continues to be pushed in, the elastic supporting portion 241 is gradually compressed and deformed until the notch at the connection between the elastic supporting portion 241 and the engaging portion 242 passes through the latching protrusion 151. The elastic supporting portion 241 rebounds and the latching protrusion 151 engages with the notch. At this time, the first circuit board 8 is just installed in the first card slot 111 and the second card slot 121. One side of the mounting base 2 body contacts the first card protrusion 11 or the support protrusion 13, which can effectively ensure the installation reliability of the mounting base 2. When the mounting base 2 needs to be disassembled, it is only necessary to press the pressing portion 243 of the elastic claw 24, the elastic supporting portion 241 is deformed, and the notch is separated from the locking protrusion 151, so that the mounting base 2 can be smoothly and conveniently taken out of the accommodating cavity of the housing 1.

[0062] Of course, it should be noted that the above-mentioned elastic claw 24 is only a preferred solution. In specific implementation, the elastic claw 24 can also be in other shapes. For example, the elastic claw 24 is T-shaped, and the clamping portion and the pressing portion are connected to the main body 20 through the elastic support portion. The clamping end of the clamping portion faces the side of the main body 20 provided with the fixing plate structure 22, and the clamping end faces the side of the mounting through hole 21 with a hook. The free end of the pressing portion faces the side of the main body 20 provided with the annular structure 23. When the mounting seat 2 is installed in the accommodating cavity of the housing 1, the hook of the engaging part of the elastic claw 24 first contacts the cam 151. As the mounting seat 2 is pushed in further, the engaging part of the elastic claw 24 is deformed until the hook passes through the cam 151. The engaging part of the elastic claw 24 rebounds, and the cam 151 is engaged with the hook. At this time, the first circuit board 8 is just installed in the first card slot 111 and the second card slot 121. One side of the mounting seat 2 body contacts the first card protrusion 11 or the support protrusion 13, which can effectively ensure the installation reliability of the mounting seat 2. When the mounting seat 2 needs to be disassembled, only the pressing part of the elastic claw 24 needs to be pressed, and the elastic support part is deformed and bent toward one side of the pressing direction. The engaging part of the elastic claw 24 is tilted, and the hook is separated from the cam 151, so the mounting seat 2 can be smoothly and conveniently taken out of the accommodating cavity of the housing 1. This elastic claw 24 can also be used in conjunction with the ear, that is, the hook of the elastic claw 24 is inserted into the hole of the ear and engaged with the ear. The assembly and disassembly steps are the same as above and will not be repeated here.

[0063] In addition, when the signal transmitter adopts two elastic claws 24 of different shapes, a corresponding snap structure 15 is selected and set in the shell 1, which can also play an anti-mistake effect to a certain extent and prevent the mounting base 2 from being installed in the wrong direction in the shell 1.

[0064] like Figures 10 to 12As shown, the USB terminal seat 3 includes a plate-shaped seat body 30. The seat body 30 is provided with a mounting hole 31 along its thickness direction, and the mounting hole 31 is preferably rectangular. The seat body 30 is provided with a first annular structure 32 and a second annular structure 33 on both sides of its thickness direction. The first annular structure 32 and the second annular structure 33 extend outward from the side of the seat body 30 respectively, and the axial direction of the first annular structure 32 and the second annular structure 33 is consistent with the thickness direction of the seat body 30. The mounting hole 31 passes through the area surrounded by the first annular structure 32 and the area surrounded by the second annular structure 33 respectively. The seat body 30 is provided with a plurality of claws 34 on one side of the first annular structure 32, and the plurality of claws 34 are arranged around the first annular structure 32. When the shell 1 is engaged with the USB terminal seat 3, the first annular structure 32 is inserted into the accommodating cavity of the shell 1 through the opening at the open end of the shell 1. The length direction of the claw 34 is consistent with the thickness direction of the seat body 30. The width of the clamping claw 34 decreases in the direction away from the base 30. A clamping protrusion 341 is provided on the side of the clamping claw 34 away from the mounting hole 31. The side of the clamping protrusion 341 away from the base 30 is designed as a bevel. The bevel design cooperates with the chamfer of the notch 10 to ensure that the clamping claw 34 of the USB terminal seat 3 can be smoothly inserted into the notch 10 of the shell. An anti-slip structure 342 is provided on the side of the clamping protrusion 341 away from the base 30. Preferably, there are two clamping claws 34, and the two clamping claws 34 are symmetrically distributed on both sides of the first annular structure 32 in the length direction of the base 30, and the width direction of the clamping claw 34 is consistent with the width direction of the base 30. The clamping claw 34 on the base 30 is arranged corresponding to the notch 10 at the open end of the shell 1. When the shell 1 is engaged with the USB terminal seat 3, the clamping claw 34 can be engaged with the corresponding notch 10. The clamping claw 34 has a certain elasticity. When the housing 1 is clamped on the USB terminal seat 3, the clamping protrusion 341 of the clamping claw 34 first contacts the notch 10 of the housing 1. With further clamping, the clamping claw 34 is deformed by force until the clamping protrusion 341 passes through the notch 10. The clamping claw 34 rebounds and the clamping protrusion 341 just clamps with the edge of the notch 10. When disassembling, it is only necessary to press the clamping protrusions 341 of the two clamping claws 34 to deform the clamping claws 34 by force until the clamping protrusions 341 of the clamping claws 34 are separated from the edge of the notch 10, and then the signal transmitter body can be smoothly removed from the USB terminal seat 3.

[0065] A third annular structure 35 is also provided in the area enclosed by the first annular structure 32. Fig.10As shown, the third annular structure 35 extends outward from the bottom of the area enclosed by the first annular structure 32. The inner wall of the third annular structure 35 is flush with the inner wall of the mounting hole 31, and the inner corner position of the third annular structure 35 on one end away from the base body 30 is chamfered. The signal transmitter also includes a second circuit board 9, and the second circuit board 9 is preferably circular. A USB female terminal 91 is installed on the second circuit board 9. The second circuit board 9 is installed in the area enclosed by the second annular structure 33, and the USB female terminal 91 is located in the mounting hole 31. When the shell 1 is engaged on the USB terminal seat 3, the third annular structure 35 is inserted into the area enclosed by the annular structure 23 of the mounting seat 2 located in the accommodating cavity of the shell 1, and the third annular structure 35 conflicts with the bottom end of the area enclosed by the annular structure 23, and the USB male terminal 81 is connected to the USB female terminal 91, as shown in FIG. Fig.14 The second circuit board 9 is also connected with a transmission line, which can be connected to an external power source or a main terminal. When the USB male terminal 81 is connected to the USB female terminal 91, the signal transmitter body can be electrically connected, thereby achieving normal operation.

[0066] In a further embodiment, an anti-fouling rib 36 is provided between the inner wall of the first annular structure 32 and the outer wall of the third annular structure 35. Fig.10 The length direction of the anti-foolproof rib 36 is consistent with the thickness direction of the seat body 30. The figure schematically shows that the anti-foolproof rib 36 is arranged on one side of the mounting hole 31 in the length direction of the seat body 30. Figure 8 The length of the reinforcing rib of the USB terminal seat 3 shown in the figure is shorter than the length of the third annular structure 35. Of course, the shape of the reinforcing rib can be designed as needed. For example, when the limiting groove 25 on the mounting seat 2 extends outward through the position of the foolproof notch 231, the length of the corresponding foolproof rib 36 can also be set to be consistent with the length of the third annular structure 35, or the end of the foolproof rib 36 away from the seat body 30 is designed to be stepped. When the signal transmitter body, that is, the shell 1 with the mounting seat 2 installed is correctly engaged with the USB terminal seat 3, the foolproof rib 36 on the USB terminal seat 3 is located in the foolproof notch 231 on the mounting seat 2. By setting the foolproof structure, during the engagement process between the shell 1 and the USB terminal seat 3, if the foolproof notch 231 is not aligned with the foolproof rib 36, the USB male terminal 81 is not connected to the USB female terminal 91, which can effectively prevent the USB terminal from being damaged due to wrong insertion or mis-insertion. At the same time, the claw 34 is not engaged with the notch 10 .

[0067] In a further embodiment, at least one annular groove 321 is provided on the outer wall of the first annular structure 32. Fig.10 As shown, only one is schematically drawn in the figure, and the axial direction of the annular groove 321 is consistent with the axial direction of the first annular structure 32. The signal transmitter is also equipped with a sealing ring 38, and the sealing ring 38 is sleeved in the annular groove 321. By providing the sealing ring 38, it can be ensured that when the housing and the USB terminal seat 3 are engaged, there is good sealing between the housing and the USB terminal seat 3.

[0068] In a further embodiment, a plurality of long grooves 322 are provided on the outer wall of the first annular structure 32. Fig.10 As shown. That is, the first annular structure 32 is designed for stealing materials. The length direction of the long groove 322 is consistent with the circumferential direction of the first annular structure 32, and the long groove 322 is located between the annular groove 321 and the seat body 30. A plurality of the long grooves 322 are arranged in sequence along the circumferential direction of the first annular structure 32. This structural design can effectively prevent the first annular structure 32 from being too thick at a position close to the seat body 30 during the production process, and from being deformed due to the inconsistent cooling speed with other positions of the USB terminal seat 3. At the same time, there is no stealing between adjacent long grooves 322, and a support structure can be formed to ensure the strength of the first annular structure 32.

[0069] In a further embodiment, the corner of one side of the base body 30 provided with the first annular structure 32 is chamfered, so as to ensure that when the signal transmitter housing 1 is engaged with the USB terminal seat 3, the base body 30 of the USB terminal seat 3 can perfectly cover the opening end of the housing 1, and no excessive gap will appear between the base body 30 and the opening end of the housing due to manufacturing errors or the like.

[0070] In a further embodiment, the side surface of the seat body 30 provided with the second annular structure 33 is provided with at least one protruding structure 37 having a set shape, such as Fig.11As shown. The figure schematically shows a protrusion structure 37, which is in the shape of a runway, and the protrusion structure 37 extends from the outer wall surface of the second annular structure 33 to the surroundings, and the two opposite sides in the length direction of the base 30 are curved, and the two opposite sides in the width direction of the base 30 are straight. Preferably, the thickness of the protrusion structure 37 is 1.5 mm, and of course the thickness of the Susonghu protrusion structure 37 can also be other values. Of course, the above is only a preferred solution. In the specific implementation, the number, shape and distribution position of the protrusions can be designed as needed. For example, the protrusion structure 37 can also be two, and the two protrusions are symmetrically distributed on both sides of the length direction of the base 30 of the second annular structure. And the two protrusions are respectively arranged close to the edge of the base 30.

[0071] In a further embodiment, the signal transmitter further comprises a nut 4. The outer wall surface of the second annular structure 33 is provided with a thread structure 331, such as Fig.11 and Fig.12 As shown. When installing the USB terminal seat 3, the nut 4 can be installed on the second annular structure 33 to fix the USB terminal seat 3. At the same time, a sealing gasket 5 can be sleeved on the second annular structure 33, and the sealing gasket 5 is provided with a through hole or a notch corresponding to the protruding structure 37, and the thickness of the sealing gasket 5 is greater than the height of the protruding structure 37. With such a design, on the one hand, the protruding structure 37 can play the role of radially limiting the sealing gasket 5 to prevent the sealing gasket 5 from rotating, and on the other hand, it can play the role of axial limiting to prevent the sealing gasket 5 from being excessively squeezed and damaged when installing the USB terminal seat 3.

[0072] In a further embodiment, the bottom surface of the area enclosed by the second annular structure 33 is provided with a plurality of countersunk holes 332 of a set shape, that is, the bottom surface of the area enclosed by the second annular structure 33 is designed for stealing materials, which can effectively prevent the second annular structure 33 from being thicker at the enclosed area during the production process, and deforming due to the inconsistent cooling speed with other positions of the USB terminal seat 3. At the same time, a plurality of limiting posts 333 are provided on the bottom surface of the area enclosed by the second annular structure 33, and the length direction of the limiting posts 333 is consistent with the thickness direction of the seat body 30. A limiting hole is provided at a corresponding position on the second circuit board 9, and the second circuit board 9 is limited by the limiting posts 333 and the limiting hole to prevent axial rotation.

[0073] In a further embodiment, the signal transmitter further comprises a dust cover 7, and the dust cover 7 can be snapped onto a side of the USB terminal seat 3 where the first annular structure 32 is provided, and the first annular structure 32 is located inside the dust cover 7. Fig.15 As shown. Fig.16 and Fig.17 As shown, the dust cover 7 has a closed end and an open end along its axial direction. The dust cover 7 has a containing cavity, the axial direction of the containing cavity is consistent with the axial direction of the dust cover 7, and the containing cavity is connected to the opening of the open end. When the dust cover 7 is engaged on the terminal seat body, the first annular structure 32 is inserted into the containing cavity through the opening. A notch 70 is provided on the dust cover 7 corresponding to the position of the claw 34 of the USB terminal seat 3, and when the dust cover 7 is engaged on the terminal seat body, the claw 34 can be engaged with the corresponding notch 70. The main body of the dust cover 7 is between the open end and the closed end. The outer diameter of the open end is larger than the outer diameter of the main body, and the open end and the main body form a transition area on the outer wall of the housing 1, and the notch 70 passes through the open end and the transition area respectively.

[0074] In a further embodiment, an anti-slip structure 71 is provided on the outer wall surface of the main part of the dust cover 7 at the position corresponding to each notch 70, and the anti-slip structure 71 is located between the notch 70 and the closed end, so that the user can easily remove the dust cover 7 from the USB terminal seat 3. A plurality of countersunk holes 72 are also provided at the open end of the dust cover 7, and the plurality of countersunk holes 72 are arranged around the opening, that is, the open end of the dust cover 7 is designed for stealing materials, so as to prevent the deformation of the open end of the dust cover 7 due to the thicker wall thickness near the open end of the dust cover 7 and the inconsistent material cooling time with other parts of the dust cover 7 during the production process. Similarly, the notch 70 on the dust cover 7 is provided with a chamfer at the inner corner of the open end away from the opening, and the chamfer design cooperates with the inclined surface design of the claw 34 on the USB terminal seat 3, so as to ensure that the claw 34 of the USB terminal seat 3 can be smoothly inserted into the notch 70 of the dust cover 7. The installation method between the dust cover 7 and the USB terminal seat 3 is consistent with the housing 1, so it is not repeated here. The signal transmitter of the present application is equipped with a dust cover 7. After removing the signal transmitter body, the USB female terminal 91 or the USB terminal seat 3 can be shielded by the dust cover 7 to prevent dust and other dirt from falling in.

[0075] It should be noted that the chamfers mentioned above are preferably chamfered at an angle of 120°. Of course, the angles of the chamfers can also be flexibly set according to design requirements, and are not limited in this application.

[0076] Based on the above content, it can be known that the signal transmitter of the present application has one or more of the following beneficial effects:

[0077] (1) The signal transmitter of the present application has a mounting base and a housing connected by a snap-fit ​​connection, which can be quickly disassembled and assembled;

[0078] (2) The signal transmitter of the present application has a fool-proof structure between its housing and the USB terminal seat, which can effectively prevent damage to the USB terminal due to wrong or erroneous insertion;

[0079] (3) The signal transmitter of the present application is equipped with a dust cover. After removing the signal transmitter body, the USB female terminal or the USB terminal seat can be shielded by the dust cover to prevent dust and other dirt from falling in;

[0080] (4) The signal transmitter of the present application has an opening end of the housing, a boss provided on one side of the fixing plate structure of the mounting seat, a first annular structure of the USB terminal seat, a bottom surface of the area enclosed by the second annular structure of the USB terminal seat, and an opening end of the sealing cover, which are designed to effectively prevent product deformation;

[0081] (5) The signal transmitter of the present application has multiple chamfers on each sub-component, which can ensure smooth assembly between the sub-components;

[0082] (6) The signal transmitter of the present application has an anti-slip structure on its dust cover and claws, which can ensure that the user can smoothly remove the dust cover or shell;

[0083] (7) The signal transmitter of the present application is provided with a sealing ring to ensure the sealing between the housing and the USB terminal seat;

[0084] (8) The signal transmitter of the present application is provided with a sealing gasket, and a protrusion with a set shape is provided on one side of the USB terminal seat where the sealing gasket is installed, and the thickness of the sealing gasket is greater than the height of the protrusion. With such a design, on the one hand, the protrusion can play the role of radially limiting the sealing gasket to prevent the sealing gasket from rotating, and on the other hand, it can play the role of axial limiting to prevent the sealing gasket from being excessively squeezed and damaged when the USB terminal seat is installed;

[0085] (9) The signal transmitter of the present application has a shell side wall with a plurality of through holes for installing the light guide column, and the inner wall of the through hole is provided with a plurality of installation grooves, which can be interference fit with the interference ribs on the outer wall of the light guide column, thereby realizing the rapid disassembly and assembly of the light guide column.

[0086] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0087] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0088] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A signal transmitter, It is characterized in that It comprises a shell (1), a mounting seat (2) and a USB terminal seat (3), wherein the shell (1), the mounting seat (2) and the USB terminal seat (3) are coaxially arranged, the shell (1) respectively having a closed end and an open end along its axial direction, the shell (1) having a receiving cavity, the axial direction of the receiving cavity being consistent with the length direction of the shell (1), the receiving cavity being communicated with the opening of the open end, the mounting seat (2) being mounted in the receiving cavity, the mounting seat (2) having a fixed plate structure (22) on the side facing the closed end, the mounting seat (2) having a ring structure (23) on the side away from the closed end, the USB terminal seat (3) being snapped into the open end of the shell (1), the USB terminal seat (3) having a first ring structure (32) on the side close to the shell (1), the USB terminal seat (3) having a second ring structure (33) on the side away from the shell (1), the first ring structure (32) being inserted into the receiving cavity through the opening; The mounting seat (2) is provided with a mounting through hole (21), the axial direction of the mounting through hole (21) is consistent with the axial direction of the mounting seat (2), the fixing plate structure (22) is formed with a fixing plate groove (223), and the inner wall of the shell (1) is provided with a cardboard groove corresponding to the position of the fixing plate groove (223), the signal transmitter also includes a first circuit board (8), one end of the first circuit board (8) is installed with a USB male terminal (81), one end of the first circuit board (8) is fixed in the fixing plate groove (223), the USB male terminal (81) is located in the mounting through hole (21), and when the mounting seat (2) is installed in the accommodating cavity, the first circuit board (8) is inserted into the cardboard groove; The USB terminal seat (3) is provided with a plurality of claws (34) on one side of the first annular structure (32); the housing (1) is provided with notches (10) at positions corresponding to the claws (34); when the housing (1) is engaged with the USB terminal seat (3), the claws (34) can be engaged with the corresponding notches (10); The USB terminal seat (3) is provided with a mounting hole (31), the axial direction of the mounting hole (31) is consistent with the axial direction of the USB terminal seat (3), a third ring structure (35) is also provided in the area enclosed by the first ring structure (32), the third ring structure (35) extends outward from the bottom of the area enclosed by the first ring structure (32), the inner wall of the third ring structure (35) is flush with the inner wall of the mounting hole (31), and the signal transmitter further comprises a second circuit board (9), on which a USB female terminal ( 91), the second circuit board (9) is installed in the area surrounded by the second annular structure (33), the USB female terminal (91) is located in the mounting hole (31), when the housing (1) is engaged with the USB terminal seat (3), the third annular structure (35) is inserted into the area surrounded by the annular structure (23) of the mounting seat (2) located in the accommodating cavity, the third annular structure (35) abuts against the bottom end of the area surrounded by the annular structure (23), and the USB male terminal (81) is connected to the USB female terminal (91); An anti-fouling rib (36) is provided between the inner wall of the first annular structure (32) and the outer wall of the third annular structure (35), and an anti-fouling notch (231) is provided in the annular structure (23) at a position corresponding to the anti-fouling rib (36); Wherein, during the engagement process between the housing (1) and the USB terminal seat (3), if the foolproof notch (231) is not aligned with the foolproof rib (36), the USB male terminal (81) is not connected to the USB female terminal (91), and the claw (34) is not engaged with the notch (10); The length direction of the plate fixing groove (223) is consistent with the length direction of the mounting seat (2), and the plate fixing groove (223) is arranged off-axis in the width direction of the mounting seat (2).

2. The signal transmitter according to claim 1, It is characterized in that The housing (1) is provided with a buckle structure (15) on the inner wall near the opening end, and the mounting seat (2) is provided with an elastic claw (24). When the mounting seat (2) is installed in the accommodating cavity, the elastic claw (24) can be engaged with the buckle structure (15).

3. The signal transmitter according to claim 1, It is characterized in that It also includes a sealing ring (38) and a sealing gasket (5); at least one annular groove (321) is provided on the outer wall of the first annular structure (32); the axial direction of the annular groove (321) is consistent with the axial direction of the first annular structure (32); and the sealing ring (38) is sleeved in the annular groove (321); The USB terminal seat (3) is provided with at least one protruding structure (37) having a set shape on one side of the second annular structure (33); the sealing gasket (5) is sleeved on the second annular structure (33); a through hole corresponding to the protruding structure (37) is opened on the sealing gasket (5); and the thickness of the sealing gasket (5) is greater than the height of the protruding structure (37).

4. The signal transmitter according to claim 1, It is characterized in that A switch element (82) and a plurality of light-emitting elements (83) are also mounted on the first circuit board (8); a switch structure (18) is arranged at a position on the housing (1) corresponding to the switch element (82); and a light guide column (6) is mounted at a position on the housing (1) corresponding to the light-emitting element (83); The light guide column (6) comprises a light guide main body part (61) and a light guide limiting part (62) in sequence, the diameter of the light guide limiting part (62) being larger than the diameter of the light guide main body part (61), and a plurality of interference ribs (63) are provided at intervals on the outer wall of the light guide main body part (61) near the light guide limiting part (62).

5. The signal transmitter according to claim 1, It is characterized in that It also includes a nut (4), the outer wall surface of the second annular structure (33) is provided with a thread structure (331), and the nut (4) is mounted on the second annular structure (33); It also comprises a dust cover (7), and the dust cover (7) can be snapped onto a side of the USB terminal seat (3) where the first annular structure (32) is provided.

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