CN217009741U

CN217009741U - Seal structure of urea quality sensor control circuit

Info

Publication number: CN217009741U
Application number: CN202123058509.6U
Authority: CN
Inventors: 王璇
Original assignee: Hefei Lanhai Electronic Technology Co ltd
Current assignee: Hefei Lanhai Electronic Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-19
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a sealing structure of a urea quality sensor control circuit, which comprises a connector seat, an interface sleeve, a plurality of leads and a lead soft sleeve, wherein the rear end of the interface sleeve is fixedly inserted with the interface seat, a plurality of conductive contact pins, a plurality of conductive metal sheets and a plurality of interface harness guide blocks are sequentially embedded in the interface seat from front to back, the front ends of the conductive contact pins extend into the interface sleeve, the rear ends of the conductive contact pins are electrically connected with corresponding conductive metal sheets, the rear ends of the conductive metal sheets are inserted into the corresponding interface harness guide blocks and are electrically connected with the front ends of the leads, the lead soft sleeve covers the leads, and the rear end of the lead soft sleeve is connected with a Glan head. The utility model has reasonable structural design and good sealing effect of the whole transmission line; after the interface sleeve is matched and inserted with the insertion seat, the stable butt joint state can be kept and the disconnection is not easy to occur; when the connector sleeve is disassembled, the connector sleeve is pulled out, and the operation and the use are convenient.

Description

Seal structure of urea quality sensor control circuit

Technical Field

The utility model relates to the technical field of urea sensors, in particular to a sealing structure of a control circuit of a urea quality sensor.

Background

A urea sensor is a sensor that can convert a sensed amount of urea into a usable output signal, and is commonly used on trucks and buses. The high-performance algorithm of the urea sensor on-line real-time multi-parameter urea analysis can directly feed back the urea concentration change to the control system so as to reduce the emission of nitrogen oxides and achieve the aim of optimal control. The urea box sensor generally comprises a plastic head, a heating pipe, a float type liquid level sensor, a urea pipe, a filter assembly and other parts, and most of pipeline parts (the heating pipe, the urea pipe, a float type insert column, a wiring harness pipe and the like) are required to be integrally installed on the plastic head. Because urea case sensor has gathered a plurality of electronic parts, consequently, need install the software control circuit who is used for controlling these electronic parts in the base box of plastic head usually, in current urea sensor's structure, software control circuit directly wears out the base box through the wire, and the wire tip is through ordinary joint and vehicle control end butt joint, and not only the whole sealed effect is not good, and the joint is not stable enough with vehicle control end butt joint.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a sealing structure of a control circuit of a urea quality sensor, which solves the above problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a sealing structure of a urea quality sensor control circuit comprises a connector seat, an interface sleeve, a plurality of wires and a wire soft sleeve, wherein the connector seat is fixedly inserted into the rear end of the interface sleeve, a plurality of conductive contact pins, a plurality of conductive metal sheets and a plurality of interface harness guide blocks are sequentially embedded into the interface seat from front to back, the front ends of the conductive contact pins extend into the interface sleeve, the rear ends of the conductive contact pins are electrically connected with corresponding conductive metal sheets, the rear ends of the conductive metal sheets are inserted into the corresponding interface harness guide blocks and are electrically connected with the front ends of the wires, the wire soft sleeve covers the wires, and the rear ends of the wire soft sleeve are connected with a Glan head;

the front end cartridge of joint seat is fixed with inlays the dress seat, inlays the inside past of dress seat and inlays in proper order after to and be equipped with a plurality of joint pencil guide blocks and a plurality of electrically conductive metal covering, the rear end of joint seat extends there is the cartridge seat, and a plurality of jacks that supply electrically conductive contact pin male are seted up to the terminal surface of cartridge seat, the rear end of electrically conductive metal covering extends to in the jack.

Preferably, the connector base adopts a flat structure, the interface sleeve also adopts a flat structure, the inner wall of the interface sleeve is further provided with a guide strip, and the outer wall of the plug-in mounting base is correspondingly provided with a guide groove.

Preferably, the side wall of the joint seat is provided with a pair of extending seat pieces in a bending and extending manner, the end parts of the two extending seat pieces are integrally connected with the shifting piece, a clamping groove is formed between the two extending seat pieces and the shifting piece, and a protruding part used for being matched with the clamping groove is convexly arranged on the side wall of the interface sleeve.

Preferably, the front end of the embedding seat extends to form an embedding edge, and the rear end of the interface seat extends to form an interface seat protruding edge.

Preferably, the wire harness installation sealing device further comprises a sealing rubber sleeve, wherein the sealing rubber sleeve comprises a connector interface section, a corrugated pipe section and a wire harness installation sealing opening section, the connector interface section is sleeved at the rear end of the interface seat, the right side of the connector interface section is integrally connected with a smooth sleeve section, the right side of the smooth sleeve section is integrally connected with the corrugated pipe section, the right side of the corrugated pipe section is integrally connected with a straight sleeve section, and the right side of the straight sleeve section is integrally connected with a wire harness installation sealing opening section, which is sleeved at the front end of the wire soft sleeve;

the connector is characterized in that a step groove part used for limiting the protruding edge of the connector seat is arranged on the inner wall of the joint between the connector section and the smooth sleeve section, and an inner convex ring part used for limiting the rear end of the protruding edge of the connector seat is arranged on the inner wall of the joint between the smooth sleeve section and the corrugated pipe section.

Preferably, still include the control box, the control box includes casing, lower casing and sealed control circuit board of settling in the control box, and the internal wall of inferior valve extends and has a plurality of cartridge buckle heads, it corresponds complex buckle groove with cartridge buckle head to go up shells inner wall distribution and is provided with a plurality ofly, and the lower casing side extends has the installation department, has seted up the mounting hole on the installation department, and casing bottom terminal surface extends to have and is used for the control box to the interface with control circuit board electricity is connected down.

Compared with the prior art, the utility model has the beneficial effects that: the rear end of the wire soft sleeve is assembled with an interface hole on the outer wall of the base box in a matching way through the Glan head, and the front end of the wire soft sleeve is assembled and butted with the interface seat through the sealing rubber sleeve, so that the whole transmission line has good sealing effect; when the interface sleeve is matched with the inserting seat for inserting, the conductive contact pin is inserted into the jack and is communicated with the conductive metal sleeve, so that the circuit from the vehicle control end to the software control circuit is communicated, and after inserting is finished, the bulge part can be clamped into the clamping groove, so that the interface sleeve and the interface seat can keep a stable butt joint state and are not easy to disengage; when the connector sleeve is disassembled, the connector sleeve can be pulled out only by pulling the shifting sheet to separate the clamping groove from the protruding part, and the operation and the use are convenient.

Drawings

FIG. 1 is a schematic top perspective view of a seal structure of a urea quality sensor control circuit;

FIG. 2 is a schematic bottom perspective view of a seal structure of a control circuit of a urea quality sensor;

FIG. 3 is a schematic diagram of the internal structure of an interface sleeve in the sealing structure of a control circuit of a urea quality sensor;

FIG. 4 is a schematic perspective view of a connection seat in a sealed structure of a control circuit of a urea quality sensor;

FIG. 5 is a schematic structural diagram of a sealing rubber sleeve in a sealing structure of a control circuit of a urea quality sensor;

fig. 6 is a schematic diagram of an exploded structure of a control box in a sealed structure of a control circuit of a urea quality sensor.

In the figure: 1-interface sleeve, 11-interface seat, 111-interface harness guide block, 112-conductive metal sheet, 113-conductive pin, 12-interface seat protruding edge, 13-protruding part, 14-guide strip, 2-interface seat, 21-embedded seat, 22-embedded edge, 23-extending seat sheet, 24-toggle sheet, 25-clamping groove, 26-insertion seat, 261-jack, 262-guide groove, 3-wire soft sleeve, 31-wire, 4-Glan head, 41-Glan head sealing ring, 42-wire ring, 5-control box, 51-upper shell, 52-lower shell, 53-control circuit board, 54-insertion buckle head, 55-control box butt joint, 6-sealing rubber sleeve, 61-connector interface section, 62-step groove part, 63-smooth sleeve section, 64-internal convex ring part, 65-corrugated pipe section, 66-straight sleeve section and 67-wiring harness installation sealing opening section.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, a sealing structure of a urea quality sensor control circuit includes a connector base 2, an interface sleeve 1, a plurality of wires 31 and a wire soft sleeve 3, wherein the rear end of the interface sleeve 1 is fixedly inserted with the interface base 11, the interior of the interface base 11 is sequentially embedded with a plurality of conductive pins 113, a plurality of conductive metal sheets 112 and a plurality of interface harness guide blocks 111 from front to back, the front ends of the conductive pins 113 extend into the interface sleeve 1, the rear ends of the conductive pins 113 are electrically connected with the corresponding conductive metal sheets 112, the rear ends of the conductive metal sheets 112 are inserted into the corresponding interface harness guide blocks 111 and are electrically connected with the front ends of the wires 31, the wire soft sleeve 3 covers the wires 31, and the rear end of the wire soft sleeve 3 is connected with a glan head 4;

the front end of the connector holder 2 is fixedly inserted with an embedded base 21, a plurality of connector harness guide blocks and a plurality of conductive metal sleeves are sequentially embedded in the embedded base 21 from front to back, the rear end of the connector holder 2 extends to form an inserted base 26, a plurality of jacks 261 for inserting the conductive pins 113 are formed in the end face of the inserted base 26, and the rear ends of the conductive metal sleeves extend into the jacks 261.

When the interface sleeve 1 is inserted into the insertion seat 26, the conductive pins 113 are inserted into the insertion holes 261 and are connected with the conductive metal sleeves, so that the connection of the control end of the vehicle to the circuit of the software control is realized.

In this embodiment, the connector base is of a flat structure, the interface sleeve is also of a flat structure, the inner wall of the interface sleeve 1 is further provided with a guide strip 14, and the outer wall of the insertion base is correspondingly provided with a guide groove 262. The arrangement of the guide strip 14 and the guide groove 262 can effectively ensure that the connector holder 2 and the interface sleeve 1 can be inserted and butted in a correct manner, and reverse connection between the connector holder and the interface sleeve is avoided.

A pair of extending seat pieces 23 are bent and extended on the side wall of the joint seat 2, the end parts of the two extending seat pieces 23 are integrally connected with a shifting piece 24, a clamping groove 25 is formed between the two extending seat pieces 23 and the shifting piece 24, and a protruding part 13 used for being matched with the clamping groove 25 is convexly arranged on the side wall of the interface sleeve 1.

After the interface sleeve 1 and the insertion seat 26 are matched and inserted, the convex part 13 can be clamped into the clamping groove 25, so that the interface sleeve 1 and the joint seat 2 can be in a stable butt joint state and are not easy to disengage; when the connector sleeve 1 is disassembled, the connector sleeve 1 can be pulled out only by pulling the shifting piece 24 to separate the clamping groove 25 from the convex part 13, and the operation and the use are convenient.

The front end of the embedding seat 21 extends to form an embedding edge 22 which is convenient for being stably embedded at a vehicle control end, and the rear end of the interface seat 11 extends to form an interface seat protruding edge 12.

The wire harness installation sealing device further comprises a sealing rubber sleeve 6, wherein the sealing rubber sleeve 6 comprises a connector interface section 61, a corrugated pipe section 65 and a wire harness installation sealing interface section 67, the connector interface section 61 is sleeved at the rear end of the connector base 11, the right side of the connector interface section 61 is integrally connected with a smooth sleeve section 63, the right side of the smooth sleeve section 63 is integrally connected with the corrugated pipe section 65, the right side of the corrugated pipe section 65 is integrally connected with a straight sleeve section 66, and the right side of the straight sleeve section 66 is integrally connected with the wire harness installation sealing interface section 67, which is sleeved at the front end of the wire soft sleeve 3;

the inner wall of the joint between the connector interface section 61 and the smooth sleeve section 63 is provided with a step groove 62 for limiting the protruding edge 12 of the interface seat, and the inner wall of the joint between the smooth sleeve section 63 and the corrugated pipe section 65 is provided with an inner convex ring part 64 for limiting the rear end of the protruding edge 12 of the interface seat. In order to ensure further sealing effect, the connector interface section 61 and the interface seat 11 can be welded together when the sealing rubber sleeve 6 is butted with the front end of the wire soft sleeve 3 and the interface seat 11, and the wire harness installation sealing interface section 67 and the front end of the wire soft sleeve 3 can be welded together.

In the utility model, the rear end of the wire soft sleeve 3 is assembled with the interface hole on the outer wall of the control box in a matching way through the Glan head 4, and the front end of the wire soft sleeve 3 is assembled and butted with the interface seat 11 through the sealing rubber sleeve 6, so that the sealing effect of the whole transmission line is good.

This embodiment still includes control box 5, and control box 5 includes casing 51, casing 52 and the sealed control circuit board 53 of settling in control box 5 down, and casing 52 inner wall extends down has a plurality of cartridge buckle head 54, it is provided with a plurality ofly and corresponds complex buckle groove with cartridge buckle head 54 to go up casing 51 inner wall distribution, and casing 52 side extends down has the installation department, has seted up the mounting hole on the installation department, and casing 52 bottom terminal surface extends down has and is used for the control box to interface 55 with control circuit board 53 electricity is connected. After the control circuit board 53 is installed in the injection-molded upper casing 51, the control circuit board is integrally encapsulated by glue, then the lower casing 52 is sealed by a cover, so that the inserting buckle head 54 is clamped into the corresponding buckle groove, then the lead 31 is pressed into the base box interface sleeve with the notch, the control box interface 55 is inserted into the interface corresponding to the upper end surface of the base box, then the flange head 4 is screwed on the base box interface sleeve, specifically, the base box interface sleeve is further sheathed with the wire passing ring 42, the flange head 4 is further sheathed with the flange head sealing ring 41 for abutting against the wire passing ring 42, finally, the screw is penetrated in the installation hole, the whole control box 5 is fixed on the base box by the screw, the whole static protection performance of the control circuit can be effectively ensured by the connection structure, and the whole sealing environment of the circuit is ensured.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

Claims

1. A seal structure of a urea quality sensor control circuit is characterized in that: the connector comprises a connector base (2), an interface sleeve (1), a plurality of wires (31) and a wire soft sleeve (3), wherein the interface base (11) is fixedly inserted into the rear end of the interface sleeve (1), a plurality of conductive pins (113), a plurality of conductive metal sheets (112) and a plurality of interface harness guide blocks (111) are sequentially embedded into the interface base (11) from front to back, the front ends of the conductive pins (113) extend into the interface sleeve (1), the rear ends of the conductive pins (113) are electrically connected with the corresponding conductive metal sheets (112), the rear ends of the conductive metal sheets (112) are inserted into the corresponding interface harness guide blocks (111) and are electrically connected with the front ends of the wires (31), the wire soft sleeve (3) covers the wires (31), and the rear end of the wire soft sleeve (3) is connected with a Glan head (4);

the front end cartridge of adapter seat (2) is fixed with inlays dress seat (21), inlays the inside past of dress seat (21) and inlays in proper order and be equipped with a plurality of joint pencil guide blocks and a plurality of electrically conductive metal covering after to, the rear end of adapter seat (2) extends has cartridge seat (26), and a plurality of electrically conductive contact pin (113) male jack (261) of confession are seted up to the terminal surface of cartridge seat (26), the rear end of electrically conductive metal covering extends to in jack (261).

2. The sealing structure of a urea quality sensor control circuit according to claim 1, characterized in that: the connector seat is of a flat structure, the interface sleeve is of a flat structure, the inner wall of the interface sleeve (1) is further provided with a guide strip (14), and the outer wall of the plug-in mounting seat is correspondingly provided with a guide groove (262).

3. The sealing structure of a control circuit of a urea quality sensor according to claim 1, characterized in that: the connector comprises a connector base (2) and is characterized in that a pair of extending base pieces (23) are arranged on the side wall of the connector base (2) in a bending and extending mode, the end portions of the two extending base pieces (23) are integrally connected with a shifting piece (24), a clamping groove (25) is formed between the two extending base pieces (23) and the shifting piece (24), and a protruding portion (13) used for being matched with the clamping groove (25) is arranged on the side wall of the connector sleeve (1) in a protruding mode.

4. The sealing structure of a control circuit of a urea quality sensor according to claim 1, characterized in that: the front end of the embedding seat (21) extends to form an embedding edge (22), and the rear end of the interface seat (11) extends to form an interface seat protruding edge (12).

5. The seal structure of a urea quality sensor control circuit according to claim 4, characterized in that: the wire harness installation sealing structure is characterized by further comprising a sealing rubber sleeve (6), wherein the sealing rubber sleeve (6) comprises a connector interface section (61) sleeved at the rear end of the interface seat (11), a corrugated pipe section (65) and a wire harness installation sealing opening section (67), the right side of the connector interface section (61) is integrally connected with a smooth sleeve section (63), the right side of the smooth sleeve section (63) is integrally connected with the corrugated pipe section (65), the right side of the corrugated pipe section (65) is integrally connected with a straight sleeve section (66), and the right side of the straight sleeve section (66) is integrally connected with the wire harness installation sealing opening section (67) sleeved at the front end of the wire soft sleeve (3);

the connector is characterized in that a step groove portion (62) used for limiting the protruding edge (12) of the connector base is arranged on the inner wall of the joint between the connector section (61) and the smooth sleeve section (63), and an inner convex ring portion (64) used for limiting the rear end of the protruding edge (12) of the connector base is arranged on the inner wall of the joint between the smooth sleeve section (63) and the corrugated pipe section (65).

6. The sealing structure of a urea quality sensor control circuit according to claim 1, characterized in that: still including control box (5), control box (5) include casing (51), casing (52) down and sealed control circuit board (53) of settling in control box (5), and casing (52) inner wall extends down has a plurality of plug-in buckle head (54), it is provided with a plurality of buckle grooves that correspond the complex with plug-in buckle head (54) to go up casing (51) inner wall distribution, and casing (52) side extends down has the installation department, has seted up the mounting hole on the installation department, and casing (52) bottom terminal surface extends down and has be used for control box to interface (55) be connected with control circuit board (53) electricity.