Relay of truck cab

Abstract

The utility model discloses a relay of a truck cab, which relates to the field of relays, and comprises a shell, a plurality of connecting wire harnesses, an injection molding part arranged in the shell and a relay element connected with the injection molding part, a corrugated pipe is arranged outside the connecting wire harnesses, a plurality of annular grooves are arranged on the outer wall surface of the corrugated pipe, and the annular grooves are arranged in the shell. The injection molding part is hollow, the upper surface of the injection molding part is provided with an insertion opening allowing the corrugated pipe and the connecting wire harness to be inserted, and the side wall of the insertion opening is provided with a plurality of positioning protruding strips matched with the annular grooves. The utility model has the advantages of simple structure and cost saving.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to a relay for a truck cab. Background Art

[0002] The relay for a truck cab in the prior art, such as a relay for a truck cab tilting system disclosed in the Chinese Utility Model Patent Publication No. CN204558369U on August 12, 2015, has a threaded portion at the upper end of its injection molded body, and then is threadedly connected to a bellows. Setting threads on the injection molded body and the bellows has the defects of high processing cost and troublesome processing. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the background art, the utility model provides a relay for a truck cab with a simple structure and cost savings.

[0004] The technical solution adopted by the utility model: A relay for a truck cab, which includes a housing, a plurality of connecting wire bundles, an injection molded part installed in the housing, and a relay element connected to the injection molded part. A bellows is provided outside the connecting wire bundles. A plurality of annular grooves are provided on the outer wall surface of the bellows. The injection molded part is hollow and has an insertion opening on its upper surface for inserting the bellows and the connecting wire bundles. A plurality of positioning ridges adapted to the annular grooves are provided on the side wall of the insertion opening.

[0005] The relay element is provided with a plurality of insertion tabs, and the insertion tabs are connected to the connecting wire bundles by soldering.

[0006] The upper surface of the injection molded part is further provided with a potting port, and the insertion tabs, the bellows and the connecting wire bundles are encapsulated together by potting inside the injection molded part.

[0007] The side wall of the injection molded part is provided with a horizontally arranged insertion block, and a plurality of slots adapted to the insertion block are provided on the inner wall of the housing.

[0008] The upper side edge of the positioning ridge is provided with a fillet.

[0009] The beneficial effect of the utility model is: By arranging positioning ridges on the inner wall of the insertion opening in this technical solution, when the bellows is inserted from the insertion opening, the positioning ridges are embedded in the annular grooves to position the bellows, and then through potting, it is firmly installed inside the injection molded part, which has the advantages of simple structure, cost savings and convenient installation. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural view of the relay for a truck cab according to an embodiment of the utility model.

[0011] Figure 2 It is a cross-sectional view of the relay for a truck cab.

[0012] Figure 3 Schematic diagram of the disassembly of the relay for the truck cab. Specific implementation mode

[0013] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings:

[0014] As shown in the figure, a relay for a truck cab includes a housing 1, a plurality of connecting wire harnesses 2, an injection molding part 3 installed in the housing 1, and a relay element 4 connected to the injection molding part 3. A corrugated pipe 5 is arranged outside the connecting wire harness 2, and a plurality of annular grooves 6 are arranged on the outer wall surface of the corrugated pipe 5. The injection molding part 3 is hollow and has a socket 7 on the upper surface for inserting the corrugated pipe 5 and the connecting wire harness 2. A plurality of positioning convex strips 8 adapted to the annular grooves 6 are arranged on the side wall of the socket 7. In this technical solution, by arranging positioning convex strips on the inner wall of the socket, after the corrugated pipe is inserted from the socket, the positioning convex strips are embedded in the annular grooves to position the corrugated pipe, and then through potting, it is firmly installed in the injection molding part, which has the advantages of simple structure, cost saving and convenient installation.

[0015] The relay element 4 is provided with a plurality of insertion pieces 9, and the insertion pieces 9 are connected to the connecting wire harness 2 by soldering, ensuring the stable connection between the insertion pieces and the connecting wire harness.

[0016] The upper surface of the injection molding part 3 is also provided with a potting port 10, and the insertion pieces 9, the corrugated pipe 5 and the connecting wire harness 2 are encapsulated together in the injection molding part 3 through potting; the sealing of the relay used in the truck cab flipping system is realized, so that the mature automotive plug-in relay can be used externally and used in the truck cab flipping system.

[0017] The side wall of the injection molding part 3 is provided with a horizontally arranged insertion block 11, and a plurality of slots 12 adapted to the insertion block 11 are arranged on the inner wall of the housing 1, which has the advantages of convenient installation and stable structure.

[0018] The upper side edge of the positioning convex strip 8 is provided with a fillet. When the corrugated pipe is inserted into the socket, the fillet on the positioning convex strip reduces the resistance, and the lower side edge of the positioning convex strip is a right angle, which can prevent the corrugated pipe from being pulled out.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0021] All technicians should note that although the present utility model has been described according to the above specific embodiments, the inventive concept of the present utility model is not limited to this utility model only. Any modification using the inventive concept of the present utility model will be included in the scope of protection of the patent right of this patent.

Claims

1. A relay for a truck cab, comprising a housing (1), a plurality of connecting wire harnesses (2), an injection molded part (3) installed in the housing (1), and a relay element (4) connected to the injection molded part (3), characterized in that: The connecting wire harness (2) is provided with a bellows (5) outside, and the outer wall surface of the bellows (5) is provided with a plurality of annular grooves (6). The injection molded part (3) is hollow and has a socket (7) on its upper surface for inserting the bellows (5) and the connecting wire harness (2). The side wall of the socket (7) is provided with a plurality of positioning convex strips (8) adapted to the annular grooves (6).

2. The truck cab relay according to claim 1, characterized in that: The relay element (4) is provided with a plurality of inserts (9), and the inserts (9) are connected to the connecting wire harness (2) by soldering.

3. The truck cab relay according to claim 2, characterized in that: The upper surface of the injection molded part (3) is also provided with a glue injection port (10), and the insert (9), the corrugated tube (5) and the connecting wire harness (2) are packaged together in the injection molded part (3) through glue injection.

4. The truck cab relay according to claim 1, characterized in that: The side wall of the injection molded part (3) is provided with a transversely arranged plug block (11), and the inner wall of the housing (1) is provided with a plurality of slots (12) that are plugged into and matched with the plug block (11).

5. The truck cab relay according to claim 1, characterized in that: The upper edge of the positioning convex strip (8) is provided with a rounded corner.

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