CN211150428U

CN211150428U - SCR is relay box for electrical heating

Info

Publication number: CN211150428U
Application number: CN202020104128.3U
Authority: CN
Inventors: 马书金; 黄虹连; 陈衍豹; 苑金龙; 赵吉刚
Original assignee: Sinotruk Jinan Power Co Ltd
Current assignee: Sinotruk Jinan Power Co Ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-07-31
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a SCR is relay box for electrical heating, including box body, lid, relay, insurance, pencil, connector. The box body and the box cover are connected into a sealed space through a buckle, mounting lugs protrude from two ends of the box body, and threaded mounting holes are formed in the mounting lugs; the relay coil is connected with a fuse in parallel; the wiring harness is led out from the junction box; the plug-in connector is a waterproof plug-in. Compared with the prior art, the utility model discloses SCR is relay box for electrical heating has the pencil wiring convenient, small, waterproof performance is good, easy maintenance's characteristics.

Description

SCR is relay box for electrical heating

Technical Field

The utility model relates to a heavy automobile parts technical field specifically is a SCR is relay box for electrical heating.

Background

At present, in the field of heavy trucks, in order to meet emission regulations, diesel engines are required to be equipped with SCR (selective catalytic reduction) aftertreatment systems, and since urea crystallizes at about-11 ℃, diesel vehicles are required to be equipped with urea heating systems in cold regions. In the SCR post-treatment system, a plurality of relays and a plurality of fuses need to be additionally installed on the urea heating system, in a wiring diagram of an ECU, the wiring mode of the urea heating system is complex, certain difficulty is increased for the design and the manufacture of a wiring harness, more middle riveting points are needed, the reliability is poor, and when the wiring harness in the heating system breaks down, the wiring harness is inconvenient to investigate.

Disclosure of Invention

The utility model aims at solving the not enough of above-mentioned prior art, provide a SCR is relay box for electrical heating, integrate ECU mode of connection in relay box.

The utility model discloses a SCR is relay box for electrical heating, including box body, lid, relay, insurance, pencil, connector. The box body and the box cover are connected into a sealed space through a buckle, mounting lugs protrude from two ends of the box body, and threaded mounting holes are formed in the mounting lugs; the relay coil is connected with a fuse in parallel; the wiring harness is led out from the junction box and connected with the plug connector; the plug-in connector is a waterproof plug-in.

Preferably, the number of the relays is 5, and the relays are all 24V/20A in specification; the insurance quantity is 2, and the specification is 20A;

the plug-in connector 5 is a waterproof plug-in component, and the tail part of the plug-in connector is provided with a waterproof rubber sleeve.

Has the advantages that:

1. the utility model discloses the relay box is integrated inside the relay box with the wiring principle that SCR aftertreatment was used, to frame pencil design and preparation, provides great facility, has reduced the design and the manufacturing of riveting in many places many branches.

2. The utility model discloses the relay box is small, along with the spare part of present vehicle assembly is more and more, and small spare part arranges more easily.

3. Relay box assembly and maintenance are convenient, and the pencil is drawn forth by external pencil in the box, need not dismantle the relay box during assembly, and the casing mounting hole does not need mounting nut for the screw hole. When overhauing, it is comparatively difficult to investigate the pencil usually, because this scheme is integrated most wiring inside the relay box, when heating system broke down, the trouble of pencil can basically be got rid of, only need to investigate relay box interior trouble can.

4. The utility model discloses waterproof performance is good, and the box body is sealed completely, and the pencil draws forth the mouth and is equipped with waterproof gum cover, and the pencil connector is except having water-proof effects, and the tail end also is equipped with waterproof gum cover.

Drawings

Fig. 1 is a perspective view of a relay box;

FIG. 2 is a top view of the relay box with the cover removed;

FIG. 3 is a schematic diagram of a relay and fuse connection;

in the figure: 1. the box body 11, the installation lug 12, the buckle 2, the box cover 31, the fuse 32, the relay 4, the wiring harness 5 and the plug-in connector.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following further describes the embodiments of the present invention with reference to the attached drawings.

The relay box for SCR electric heating shown in fig. 1 and 2 includes a box body 1, a box cover 2, a fuse 31, a relay 32, a wire harness 4, and a plug 5. The box body 1 and the box cover 2 are connected into a sealed space through a buckle 12, mounting lugs 11 protrude from two ends of the box body 1, and threaded mounting holes are formed in the mounting lugs 11; the relay 32 coil is connected with a fuse 31 in parallel; the wiring harness 4 is led out from the junction box to be connected with the plug-in connector 5, the plug-in connector 5 is a waterproof plug-in component, and a waterproof rubber sleeve is arranged at the tail part of the plug-in connector 5.

As shown in fig. 3, an optimal connection mode between each relay and the fuse is provided. The heating relay 32 is 5, and the specification is 24V/20A, is main relay, pressure pipe heating relay, pump heating relay, returns liquid pipe heating relay, liquid suction pipe heating relay respectively, the insurance quantity is 2, and the specification is 20A for the too big protection of electric current.

The mounting holes of two installation lugs on the available box body 1 of this relay box of installation are installed, and the plug-in connector 5 that the interior pencil of car and relay box were reserved is to inserting can.

The utility model discloses the relay box is integrated inside the relay box with the wiring principle that SCR aftertreatment was used, to frame pencil design and preparation, provides great facility, has reduced the design and the manufacturing of riveting in many places many branches. The utility model discloses the relay box is small, along with the spare part of present vehicle assembly is more and more, and small spare part arranges more easily. Relay box assembly and maintenance are convenient, and the pencil is drawn forth by external pencil in the box, need not dismantle the relay box during assembly, and the casing mounting hole does not need mounting nut for the screw hole. When overhauing, it is comparatively difficult to investigate the pencil usually, because this practicality is integrated inside the relay box with most wiring, when heating system broke down, can get rid of the trouble of pencil basically, only need to investigate relay box internal trouble can. The utility model discloses waterproof performance is good, and the box body is sealed completely, and the pencil draws forth the mouth and is equipped with waterproof gum cover, and the pencil connector is except having water-proof effects, and the tail end also is equipped with waterproof gum cover.

The above embodiments of the present invention are merely examples, not the only ones, and all changes within the scope of the present invention or the same range of the present invention are all surrounded by the present invention.

Claims

1. The utility model provides a SCR is relay box for electrical heating which characterized in that: comprises a box body (1), a box cover (2), a relay (32), a fuse (31), a wire harness (4) and a plug-in connector (5); the box body (1) and the box cover (2) are connected into a sealed space by a buckle (12); the relay (32) and the fuse (31) are connected in circuit and are arranged in the box body (1); the wiring harness (4) is led out from the box body (1) and connected with the plug-in connector (5).

2. The relay box for SCR electric heating according to claim 1, characterized in that: the box body (1) both ends protrusion has installation lug (11), has the screw thread mounting hole on installation lug (11).

3. The relay box for SCR electric heating according to claim 1 or 2, characterized in that: the number of the relays is 5, and the relays are all 24V/20A in specification; the insurance quantity is 2, and the specification is 20A; the coil of the relay (32) is connected with a fuse (31) in parallel.

4. The relay box for SCR electric heating according to claim 1 or 2, characterized in that: the plug-in connector (5) is a waterproof plug-in unit, and the tail part of the plug-in connector is provided with a waterproof rubber sleeve.

5. The relay box for SCR electric heating according to claim 3, characterized in that: the plug-in connector (5) is a waterproof plug-in unit, and the tail part of the plug-in connector is provided with a waterproof rubber sleeve.