Half-ring double-signal jack channel device and instrument equipment

Abstract

The invention discloses a semi-ring dual-signal jack channel device, and the device comprises a housing pedestal which comprises a channel structure and anti-rotation structures at two sides. The input jack sleeve seat is inserted into the channel structure and comprises a jack channel cavity formed in a hollow manner; the two groups of semi-ring input connecting sheets form a double-signal jack channel and comprise a semi-ring connecting part and an electrical connecting part which are integrally formed, the semi-ring connecting part is inserted into a jack channel cavity, and the electrical connecting part extends and is fixed in the anti-rotation structure; and the mainboard PCB is arranged on the periphery of the channel structure in a sleeving manner and is electrically locked and connected with the electrical connection part. According to the invention, the mainboard PCB does not need to be welded by a plug-in unit, and the mainboard PCB can be electrically locked and connected with the two groups of semi-ring input connecting sheets only through the anti-loose screws, so that the two groups of semi-ring input connecting sheets are electrically connected with the identification circuit and the measurement sampling circuit, the traditional welding process of the mainboard PCB and the input connecting sheets is replaced, and the circuit breaking risks such as false soldering and welding drop are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, and in particular to a semi-ring dual-signal jack channel device and instrument equipment. Background Art

[0002] The meter pen misinsertion alarm function of the instrument is to issue an obvious warning such as flashing lights or beeping alarms when the function of the meter pen inserted into the multimeter input jack does not match the function of the gear selected for measurement, so as to prompt the operator to make corrections in time to ensure the safety of the operator and protect the performance of the multimeter. At present, the meter pen misinsertion alarm function of multimeters on the market is mainly implemented in two ways: photoelectric non-contact alarm and mechanical contact alarm:

[0003] First, the photoelectric non-contact alarm uses an infrared emitting diode and a photosensitive receiving diode in pairs, and makes special symmetrical openings on the signal receiving and transmitting paths of the input jack as optical signal channels. It detects in real time whether a test lead is inserted into the input jack to block the infrared signal to determine whether the test lead is inserted incorrectly. This method has more electrical components on the mainboard PCB, and the matching structure of the conductor of the input jack and the opening of the jack socket is relatively complex. In order to achieve the waterproof function, it is also necessary to cover or ultrasonically weld a transparent jack base that does not affect the transmission of optical signals. Therefore, the manufacturing cost of this method is relatively high, and the parts processing and production process are relatively complex.

[0004] Secondly, the mechanical contact alarm is to judge whether the test lead is inserted incorrectly by dividing the input jack into two semi-ring metal sheet structures and detecting the signal on and off between the two semi-ring metal sheets; one type of input jack structure is a split assembly structure, that is, the semi-ring metal sheet (metal stamping forming) is first connected to the mainboard PCB, and then assembled on the shell with the input jack. It has many welding limit and assembly limit structures, which makes the production and assembly difficult and the production line production efficiency low; at the same time, due to the assembly gap between the parts, the jack shakes during the insertion and removal of the test lead, resulting in this method not having a waterproof function. During the use of the instrument, external water vapor can easily enter the interior through the jack and cause defects such as short circuit of components; the other is a semi-integrated sleeve beer structure, in which two semi-ring metal sheets (machined forming) are assembled with the plastic input jack and fixed to the shell through the sleeve beer injection molding process. The structural sealant is sealed to have a waterproof function, but it still needs to be connected to the mainboard PCB through additional structural parts such as input connecting pieces through screws, etc., and the integration is relatively low. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention discloses a semi-ring dual-signal jack channel device and an instrument and equipment thereof.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0007] A semi-ring dual-signal jack channel device, the device comprising:

[0008] A housing base, which includes a channel structure and anti-rotation structures on both sides;

[0009] An input jack socket, which is inserted into the channel structure and includes a jack channel cavity formed by a hollow setting;

[0010] Two groups of semi-ring input connecting pieces constitute a dual-signal jack channel, which includes an integrally formed semi-ring connecting portion and an electrical connecting portion, wherein the semi-ring connecting portion is inserted into the jack channel cavity, and the electrical connecting portion is extended and fixed in the anti-rotation structure;

[0011] The mainboard PCB is sleeved on the periphery of the channel structure and is electrically locked and connected with the electrical connection part.

[0012] The above-mentioned semi-ring dual-signal jack channel device, wherein the semi-ring input connecting piece further comprises a U-shaped connecting portion and an L-shaped connecting portion;

[0013] The two ends of the U-shaped connecting portion are respectively fixedly connected to the semi-ring connecting portion and the L-shaped connecting portion, so that the axis of the semi-ring connecting portion is parallel to the L-shaped connecting portion;

[0014] The L-shaped connecting portion is fixedly connected to the electrical connecting portion so that the electrical connecting portion is perpendicular to the axis of the semi-ring connecting portion.

[0015] The above-mentioned semi-ring dual signal jack channel device, wherein a first locking through hole is provided through the electrical connection portion;

[0016] A limiting convex edge is arranged around the electrical connection part, the electrical connection part is adaptively installed in the anti-rotation structure through the limiting convex edge, and the electrical connection part is electrically locked and connected with the main board PCB through the first locking through hole.

[0017] The above-mentioned semi-ring dual-signal jack channel device, wherein the anti-rotation structure includes a limit assembly and several groups of limit ribs, wherein the several groups of limit ribs are connected end to end on the same horizontal plane in a polygonal arrangement to form a limit slot, the limit assembly is embedded in the limit slot, and the limit convex edge is adaptively installed in the limit slot.

[0018] The above-mentioned semi-ring dual-signal jack channel device, wherein the input jack sleeve comprises an inserting seat with an opening at one end, the jack channel cavity is arranged in the inserting seat and communicates with the opening, and is bent outward along the opening of the inserting seat to form a sealing ring platform, and the inserting seat and the sealing ring platform are both accommodated in the channel structure;

[0019] The inner wall surface of the insertion seat forms two groups of symmetrically arranged semi-annular grooves through two groups of isolation retaining walls. The semi-annular grooves are connected to the jack channel cavity, and the semi-annular connecting part is inserted into the semi-annular grooves.

[0020] The above-mentioned semi-ring dual-signal jack channel device, wherein the channel structure includes a mounting seat having a mounting cavity, a sealing convex edge is arranged on the inner wall surface of the mounting seat around the mounting cavity, the insertion seat is accommodated in the mounting cavity, and the sealing convex edge abuts against the sealing ring platform;

[0021] The inner wall surface of the mounting seat is provided with a limiting convex rib for limiting and fixing the sealing ring platform;

[0022] The mounting base is provided with a positioning avoidance groove for accommodating the U-shaped connecting part.

[0023] The above-mentioned semi-ring dual-signal jack channel device, wherein the device further comprises a waterproof rubber plug detachably covering the channel structure;

[0024] A jack sealing boss and a rib limiting groove are provided at the bottom of the waterproof rubber plug corresponding to the dual signal jack channel and the limiting rib respectively;

[0025] An L-shaped limiting groove for sealing and positioning the L-shaped connecting part is arranged at the bottom of the waterproof rubber plug.

[0026] The above-mentioned semi-ring dual-signal jack channel device, wherein a channel avoidance through hole and a second locking through hole are respectively provided through the mainboard PCB corresponding to the channel structure and the anti-rotation structure, and connecting piece avoidance grooves are respectively provided on both sides of the channel avoidance through hole corresponding to the semi-ring input connecting piece;

[0027] A copper-plated circular ring is arranged around the second locking through hole, and the copper-plated circular ring is in close contact with the semi-ring input connecting piece;

[0028] The channel structure sleeve is placed in the channel avoidance through hole, and the anti-loosening screw passes through the second locking through hole and the first locking through hole and is locked with the limiting assembly part to electrically connect the mainboard PCB with the semi-ring input connecting piece.

[0029] The above-mentioned semi-ring dual-signal jack channel device, wherein the mainboard PCB further comprises an identification circuit and a measurement sampling circuit, and the identification circuit is electrically connected to the processor and the copper-plated circular ring respectively;

[0030] The identification circuit and the measurement sampling circuit are electrically connected to the two groups of the semi-ring input connecting pieces respectively, so that the two groups of the semi-ring input connecting pieces are short-circuited when the test leads are inserted.

[0031] An instrument device comprises the above-mentioned semi-ring dual-signal jack channel device.

[0032] The beneficial effects of the present invention include the following:

[0033] (1) Based on the anti-rotation structure and the two groups of the semi-ring input connecting pieces integrated on the housing base through secondary injection molding, the main board PCB does not need to be plug-in welded anymore, and the main board PCB and the two groups of the semi-ring input connecting pieces can be electrically locked and connected only by the anti-loosening screws, so that the two groups of the semi-ring input connecting pieces are electrically connected to the identification circuit and the measurement sampling circuit, the online assembly process is simpler and the assembly efficiency is higher, and the traditional welding process of the main board PCB and the input connecting piece is replaced, reducing the risk of circuit breakage such as false welding and falling welding;

[0034] (2) The structure of the housing base is optimized to be divided into the channel structure and the anti-rotation structure, and the input jack sleeve is installed in the channel structure. The structure of the semi-ring input connecting piece is innovatively designed to be the semi-ring connecting part and the electrical connecting part. On the one hand, the semi-ring connecting part is inserted into the jack channel cavity to form the dual-signal jack channel, and on the other hand, the electrical connecting part is locked in the anti-rotation structure to achieve electrical connection with the mainboard PCB, so as to meet the high-integration assembly structure and realize the function of judging the wrong insertion of the test lead;

[0035] (3) The mainboard PCB is electrically connected to the semi-ring input connection piece through the copper-plated circular ring, thereby improving the conductivity and anti-interference performance of the two. The identification circuit determines whether the two groups of semi-ring input connection pieces have realized signal on-off due to the insertion of the test leads, thereby realizing the function of judging whether the test leads are inserted incorrectly through the dual signal jack channel;

[0036] (4) The waterproof rubber plug is used to improve the internal sealing of the device, thereby achieving excellent waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 It is a schematic diagram of the structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure explosion of the present invention;

[0040] Figure 3 It is a three-dimensional schematic diagram of the housing base in the present invention;

[0041] Figure 4 It is a three-dimensional schematic diagram of the input jack socket of the present invention;

[0042] Figure 5It is a three-dimensional schematic diagram of the half-ring input connecting piece in the present invention;

[0043] Figure 6 It is a three-dimensional schematic diagram of the mainboard PCB in the present invention;

[0044] Figure 7 This is a schematic diagram of the circuit principle of the mainboard PCB in the present invention;

[0045] Figure 8 It is a three-dimensional schematic diagram of the waterproof rubber plug in the present invention. DETAILED DESCRIPTION

[0046] The present invention is further described below by means of specific embodiments to make the technical solution of the present invention easier to understand and grasp, rather than to limit the present invention.

[0047] Example: See Figures 1 to 8 , this embodiment provides a semi-ring dual-signal jack channel device, the device comprising:

[0048] The housing base 1 includes a channel structure 11 and anti-rotation structures 12 on both sides;

[0049] An input jack socket 2, which is inserted into the channel structure 11 and includes a jack channel cavity formed by a hollow setting;

[0050] Two groups of semi-ring input connecting pieces 3 constitute a dual-signal jack channel, which includes an integrally formed semi-ring connecting portion 31 and an electrical connecting portion 32, wherein the semi-ring connecting portion 31 is inserted into the jack channel cavity, and the electrical connecting portion 32 is extended and fixed in the anti-rotation structure 12;

[0051] The main board PCB 4 is sleeved on the outer periphery of the channel structure 11 and is electrically locked and connected to the electrical connection portion 32 .

[0052] Preferably, the semi-ring input connecting piece 3 is a metal conductor connecting piece, and the semi-ring input connecting piece 3 further includes a U-shaped connecting portion 33 and an L-shaped connecting portion 34;

[0053] The two ends of the U-shaped connection part 33 are respectively fixedly connected to the semi-ring connection part 31 and the L-shaped connection part 34, so that the axis of the semi-ring connection part 31 is parallel to the L-shaped connection part 34; specifically, the semi-ring connection part 31 and the L-shaped connection part 34 are connected by the U-shaped connection part 33, so that the semi-ring connection part 31 and the L-shaped connection part 34 are respectively installed in the channel structure 11 and the anti-rotation structure 12, effectively reducing the occupied space of the dual signal jack channel and the electrical locking connection with the mainboard PCB4, thereby improving the integration of the device;

[0054] The L-shaped connection portion 34 is fixedly connected to the electrical connection portion 32 so that the electrical connection portion 32 is perpendicular to the axis of the semi-ring connection portion 31 , further improving the verticality of the insertion of the test lead and the locking reliability and stability of the mainboard PCB 4 .

[0055] Furthermore, a first locking through hole 35 is provided through the electrical connection portion 32;

[0056] A limiting convex edge 36 is arranged around the electrical connection part 32, and the electrical connection part 32 is adaptively installed in the anti-rotation structure 12 through the limiting convex edge 36, and the electrical connection part 32 is electrically locked and connected to the main board PCB4 through the first locking through hole 35; specifically, the limiting convex edge 36 can be designed as a polygonal convex edge according to actual usage.

[0057] Preferably, the anti-rotation structure 12 includes a limit assembly 121 and several groups of limit ribs, and the several groups of limit ribs are connected end to end on the same horizontal plane in a polygonal arrangement to form a limit slot 122, and the limit assembly 121 is embedded in the limit slot 122, and the limit ribs 36 are adaptively installed in the limit slot 122; specifically, the limit ribs can be set in number according to actual usage to form corresponding polygonal limit slots 122; in this embodiment, the limit assembly 121 is a hexagonal nut, and the limit slot 122 and the limit rib 36 are both designed to be hexagonal, wherein the hexagonal nut is cooperated with the anti-loosening screw to effectively realize the electrical locking connection between the semi-ring input connecting piece 3 and the main board PCB4, thereby optimizing the limit locking effect of the semi-ring input connecting piece 3.

[0058] Preferably, the input jack socket 2 comprises an insertion seat 21 with an opening at one end, the jack channel cavity is arranged in the insertion seat 21 and communicates with the opening, and is bent outward along the opening of the insertion seat 21 to form a sealing ring 22, and the insertion seat 21 and the sealing ring 22 are both accommodated in the channel structure 11; preferably, the opening of the insertion seat 21 is provided with a guide angle, and the guide angle facilitates the semi-ring connecting portion 31 to be guided and inserted and installed in the semi-ring groove 24;

[0059] The inner wall surface of the insertion seat 21 forms two groups of symmetrically arranged semi-annular grooves 24 through two groups of isolation retaining walls 23, the semi-annular grooves 24 are connected to the jack channel cavity, and the semi-annular connecting part 31 is inserted in the semi-annular grooves 24; specifically, the input jack socket 2 is a plastic body, which is injection-molded in the channel structure 11 of the shell base 1 by one-time injection molding, and because it is an independent structure, the color can be changed according to actual usage to distinguish the jack function type; the semi-annular connecting part 31 is inserted in the semi-annular groove 24, and the isolation retaining wall 23 effectively and completely isolates the two groups of the semi-annular connecting parts 31, so that the two groups of the semi-annular input connecting pieces 3 do not contact each other, thereby improving the anti-interference function.

[0060] Preferably, the channel structure 11 includes a mounting seat 111 having a mounting cavity, a sealing convex edge 112 is provided on the inner wall surface of the mounting seat 111 around the mounting cavity, the insertion seat 21 is accommodated in the mounting cavity, and the sealing convex edge 112 abuts against the sealing ring 22; the use of the sealing convex edge 112 and the sealing ring 22 is helpful to improve the internal sealing and waterproof performance;

[0061] The inner wall surface of the mounting seat 111 is provided with a limiting convex rib 113 for limiting and fixing the sealing ring 22; the limiting convex rib 113 effectively limits and fixes the input jack socket 2;

[0062] The mounting base 111 is provided with a positioning avoidance groove 114 for accommodating the U-shaped connecting portion 33 ; the positioning avoidance groove 114 effectively improves the assembly reliability of the U-shaped connecting portion 33 .

[0063] Preferably, the device further comprises a waterproof rubber plug 5 detachably covered on the channel structure 11; the waterproof rubber plug 5 is a plastic rubber plug, which can not only fix the semi-ring input connecting piece 3, but also effectively improve the internal sealing of the device;

[0064] At the bottom of the waterproof rubber plug 5, a jack sealing boss 51 and a rib limiting groove 52 are provided corresponding to the dual signal jack channel and the limiting rib 113, respectively, to further improve the internal sealing and waterproof performance;

[0065] An L-shaped limiting groove 53 for sealing and positioning the L-shaped connecting portion 34 is provided at the bottom of the waterproof rubber plug 5 , thereby further improving the internal sealing and waterproof performance.

[0066] Preferably, a channel avoidance through hole 41 and a second locking through hole 42 are respectively provided through the main board PCB4 corresponding to the channel structure 11 and the anti-rotation structure 12, and a connecting piece avoidance groove 43 is respectively provided on both sides of the channel avoidance through hole 41 corresponding to the semi-ring input connecting piece 3;

[0067] A copper-plated circular ring 44 is arranged around the second locking through hole 42, and the copper-plated circular ring 44 is in close contact with the semi-ring input connecting piece 3;

[0068] The channel structure 11 is sleeved in the channel avoidance through hole 41, and the anti-loosening screw passes through the second locking through hole 42 and the first locking through hole 35 and is locked with the limiting assembly 121 to electrically connect the main board PCB4 with the semi-ring input connecting piece 3; specifically, the loosening screw preferably adopts a screw with a flat washer and a spring washer, and the thread of the screw is coated with a threaded fastening adhesive layer.

[0069] Preferably, the mainboard PCB 4 further includes an identification circuit 45 and a measurement sampling circuit 46, and the identification circuit 45 is electrically connected to the processor 47 and the copper-plated ring 44 respectively;

[0070] The identification circuit 45 and the measurement sampling circuit 46 are electrically connected to the two groups of the semi-ring input connection pieces 3 respectively, so that the two groups of the semi-ring input connection pieces 3 are short-circuited when the test leads are inserted;

[0071] Specifically, when no test lead is inserted into the dual-signal jack channel, the two groups of the semi-ring input connecting pieces 3 remain in an open-circuit state, and the upper resistor of the identification circuit 45 defaults to a high level; when a test lead is inserted into the dual-signal jack channel, the two groups of the semi-ring input connecting pieces 3 are in a short-circuit state under the action of the conductor of the test lead, and since the impedance of the measurement sampling circuit 46 is very low, the upper resistor of the identification circuit 45 and the impedance of the sampling circuit are divided into a low level; when the non-current detection gear is selected, if the test lead is inserted into the dual-signal jack channel, the identification circuit 45 will recognize a low level, so the processor 47 receives a low-level signal and will determine that the test lead is incorrectly inserted, and the processor 47 will trigger an alarm, emitting a buzzer warning sound or lighting an alarm light to prompt.

[0072] The assembly method of the semi-ring dual signal jack channel device of the present invention comprises the following steps:

[0073] (1) The input jack socket 2 is inserted into the channel structure 11 of the housing base 1 by one-time injection molding. At this time, the insertion seat 21 is accommodated in the installation seat 111, the sealing ring 22 is in contact with the sealing convex edge 112, and the limiting convex rib 113 limits and fixes the sealing ring 22;

[0074] (2) Assemble the limiting assembly 121 in the limiting groove 122, and then install the semi-ring input connecting piece 3 in the housing base 1. At this time, the semi-ring connecting portion 31 is installed in the semi-ring groove 24 to form a double signal insertion channel, the U-shaped connecting portion 33 is limited in the positioning avoidance groove 114, and the electrical connecting portion 32 is installed in the limiting groove 122;

[0075] (3) placing the assembly of step (2) in a secondary beer injection mold and molding the waterproof rubber plug 5 by using a molten rubber material through an injection molding process, so that the inside and outside of the dual signal jack channel are completely sealed and isolated;

[0076] (4) Assemble the main board PCB4 on the assembly of step (3), at this time, the channel structure 11 is inserted into the channel avoidance through hole 41, and the anti-loosening screw is passed through the second locking through hole 42 and the first locking through hole 35 and locked with the limiting assembly part 121, so that the copper-plated ring 44 of the main board PCB4 forms a close contact connection with the semi-ring input connecting piece 3, thereby realizing that the two groups of the semi-ring input connecting pieces 3 are electrically connected to the identification circuit 45 and the measurement sampling circuit 46 respectively.

[0077] The method for using the semi-ring dual signal jack channel device of the present invention comprises the following steps:

[0078] (1) When no test lead is inserted into the dual signal jack, the two sets of the semi-ring input connecting pieces 3 remain in an open circuit state, and the upper resistor of the identification circuit 45 defaults to a high level;

[0079] (2) When a test lead is inserted into the dual signal jack, the two groups of the semi-ring input connecting pieces 3 are in a short-circuit state under the action of the conductor of the test lead. Since the impedance of the measurement sampling circuit 46 is very low, the upper resistor of the identification circuit 45 and the impedance of the sampling circuit are divided into a low level;

[0080] (3) When the non-current detection gear is selected, if the test lead is inserted into the dual-signal jack, the identification circuit 45 will identify a low level, so the processor 47 receives a low-level signal and determines that the test lead is incorrectly inserted. The processor 47 will trigger an alarm and emit a buzzer warning sound or turn on an alarm light to prompt.

[0081] The semi-ring dual signal jack channel device of the present invention has the following advantages:

[0082] (1) Based on the anti-rotation structure and the two groups of the semi-ring input connecting pieces integrated on the housing base through secondary injection molding, the main board PCB does not need to be plug-in welded anymore, and the main board PCB and the two groups of the semi-ring input connecting pieces can be electrically locked and connected only by the anti-loosening screws, so that the two groups of the semi-ring input connecting pieces are electrically connected to the identification circuit and the measurement sampling circuit, the online assembly process is simpler and the assembly efficiency is higher, and the traditional welding process of the main board PCB and the input connecting piece is replaced, reducing the risk of circuit breakage such as false welding and falling welding;

[0083] (2) The structure of the housing base is optimized to be divided into the channel structure and the anti-rotation structure, and the input jack sleeve is installed in the channel structure. The structure of the semi-ring input connecting piece is innovatively designed to be the semi-ring connecting part and the electrical connecting part. On the one hand, the semi-ring connecting part is inserted into the jack channel cavity to form the dual-signal jack channel, and on the other hand, the electrical connecting part is locked in the anti-rotation structure to achieve electrical connection with the mainboard PCB, so as to meet the high-integration assembly structure and realize the function of judging the wrong insertion of the test lead;

[0084] (3) The mainboard PCB is electrically connected to the semi-ring input connection piece through the copper-plated circular ring, thereby improving the conductivity and anti-interference performance of the two. The identification circuit determines whether the two groups of semi-ring input connection pieces have realized signal on-off due to the insertion of the test leads, thereby realizing the function of judging whether the test leads are inserted incorrectly through the dual signal jack channel;

[0085] (4) The waterproof rubber plug is used to improve the internal sealing of the device, thereby achieving excellent waterproof performance.

[0086] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the present invention by using the technical means and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the content of the technical solution of the present invention should be covered by the protection scope of the present invention.

Claims

1. A semi-ring dual signal jack channel device, characterized in that: The device comprises: A housing base, which includes a channel structure and anti-rotation structures on both sides; An input jack socket, which is inserted into the channel structure and includes a jack channel cavity formed by a hollow setting; Two groups of semi-ring input connecting pieces constitute a dual-signal jack channel, which includes an integrally formed semi-ring connecting portion and an electrical connecting portion, wherein the semi-ring connecting portion is inserted into the jack channel cavity, and the electrical connecting portion is extended and fixed in the anti-rotation structure; The mainboard PCB is sleeved on the periphery of the channel structure and is electrically locked and connected with the electrical connection part.

2. The semi-ring dual signal jack channel device according to claim 1, characterized in that: The semi-ring input connecting piece also includes a U-shaped connecting portion and an L-shaped connecting portion; The two ends of the U-shaped connecting portion are respectively fixedly connected to the semi-ring connecting portion and the L-shaped connecting portion, so that the axis of the semi-ring connecting portion is parallel to the L-shaped connecting portion; The L-shaped connecting portion is fixedly connected to the electrical connecting portion so that the electrical connecting portion is perpendicular to the axis of the semi-ring connecting portion.

3. The semi-ring dual signal jack channel device according to claim 2, characterized in that: A first locking through hole is provided through the electrical connection portion; A limiting convex edge is arranged around the electrical connection part, the electrical connection part is adaptively installed in the anti-rotation structure through the limiting convex edge, and the electrical connection part is electrically locked and connected with the main board PCB through the first locking through hole.

4. The semi-ring dual signal jack channel device according to claim 3, characterized in that: The anti-rotation structure includes a limiting assembly and several groups of limiting ribs, wherein the groups of limiting ribs are connected end to end on the same horizontal plane in a polygonal arrangement to form a limiting slot, the limiting assembly is embedded in the limiting slot, and the limiting protrusion is adaptively installed in the limiting slot.

5. The semi-ring dual signal jack channel device according to claim 4, characterized in that: The input jack socket includes an insertion seat with an opening at one end, the jack channel cavity is arranged in the insertion seat and communicates with the opening, and is bent outward along the opening of the insertion seat to form a sealing ring, and the insertion seat and the sealing ring are both accommodated in the channel structure; The inner wall surface of the insertion seat forms two groups of symmetrically arranged semi-annular grooves through two groups of isolation retaining walls. The semi-annular grooves are connected to the jack channel cavity, and the semi-annular connecting part is inserted into the semi-annular grooves.

6. The semi-ring dual signal jack channel device according to claim 5, characterized in that: The channel structure comprises a mounting seat having a mounting cavity, a sealing convex edge is arranged on the inner wall surface of the mounting seat around the mounting cavity, the insertion seat is accommodated in the mounting cavity, and the sealing convex edge abuts against the sealing ring platform; The inner wall surface of the mounting seat is provided with a limiting convex rib for limiting and fixing the sealing ring platform; The mounting base is provided with a positioning avoidance groove for accommodating the U-shaped connecting part.

7. The semi-ring dual signal jack channel device according to claim 6, characterized in that: The device also includes a waterproof rubber plug detachably covering the channel structure; A jack sealing boss and a rib limiting groove are provided at the bottom of the waterproof rubber plug corresponding to the dual signal jack channel and the limiting rib respectively; An L-shaped limiting groove for sealing and positioning the L-shaped connecting part is arranged at the bottom of the waterproof rubber plug.

8. The semi-ring dual signal jack channel device according to claim 7, characterized in that: A channel avoidance through hole and a second locking through hole are respectively provided through the mainboard PCB corresponding to the channel structure and the anti-rotation structure, and connecting piece avoidance grooves are respectively provided on both sides of the channel avoidance through hole corresponding to the semi-ring input connecting piece; A copper-plated circular ring is arranged around the second locking through hole, and the copper-plated circular ring is in close contact with the semi-ring input connecting piece; The channel structure sleeve is placed in the channel avoidance through hole, and the anti-loosening screw passes through the second locking through hole and the first locking through hole and is locked with the limiting assembly part to electrically connect the mainboard PCB with the semi-ring input connecting piece.

9. The semi-ring dual signal jack channel device according to claim 8, characterized in that: The mainboard PCB also includes an identification circuit and a measurement sampling circuit, and the identification circuit is electrically connected to the processor and the copper-plated ring respectively; The identification circuit and the measurement sampling circuit are electrically connected to the two groups of the semi-ring input connecting pieces respectively, so that the two groups of the semi-ring input connecting pieces are short-circuited when the test leads are inserted.

10. An instrument, characterized in that: The device comprises the semi-ring dual signal jack channel device as described in any one of claims 1 to 9.

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