CN205554102U - Auto ground structure - Google Patents

Abstract

The utility model discloses an automobile grounding structure, which comprises a conductive grounding block (1), a conductive bolt (6), a flat washer (2), a spring washer (3), and a conductive first Nut (4) and the second conductive nut (5), the head of the bolt (6) is locked into the ground block (1) and welded together with the ground block (1), the bolt (6) The other end of the lock is locked into the first nut (4) and the second nut (5) in turn. With the above technical solution, one side of the wire harness terminal (7) is closely attached to one side of the flat washer (2), which solves the problem of too much resistance of the ground wire, and uses the first nut (4) and the second nut (5) to connect The locking method of the wire harness terminal (7) can prevent loosening and effectively solve the problem of poor contact between the wire and the ground point of the vehicle body.

Description

A car ground structure

technical field

The utility model relates to an automobile structure, in particular to an automobile grounding structure.

Background technique

Automobile circuits use direct current to supply power, and the circuits have series, parallel and series-mixed forms. The circuit drawn from the electrical equipment must be connected to the negative pole of the battery through a line. If discrete wiring is used for wiring, there will be a lot of circuits on the battery. In order to save lines and make operation simple, modern cars adopt a single-wire system, that is, the positive pole of the battery is connected to various electrical equipment, the negative pole of the battery is directly grounded on the vehicle body, and the electrical components are also grounded on the body, so that the negative circuit passes through the body. The metal body reflows to the negative electrode. This way of connecting the negative line to the car body is called grounding, also known as grounding. Nowadays, with the increasing variety of automotive electronic products and the increasing complexity of automotive electrical circuits, the frequency of failures also increases. According to the survey, 70% of the failures are caused by poor grounding of the body. When the grounding is bad, there will be problems such as failure to start, no display of the instrument, and no light on the car. The grounding of the car is mainly composed of three parts: the negative pole of the car battery, the connecting wire and the grounding point of the body.

Chinese open patent: CN202716825.U, its grounding structure is composed of nuts and bolts, the head of the bolt is welded on the vehicle body, and the wire harness terminal is locked and fixed on the bolt by the nut screwed on the screw rod of the bolt. But this structure easily makes the resistance of the ground wire too large, and the wire and the ground point of the car body are in poor contact.

Utility model content

The problem to be solved by the utility model is that the resistance of the ground wire is too large, and the wire and the ground point of the car body are in poor contact.

In order to achieve the above object, the technical scheme that the utility model takes is:

The automobile grounding structure provided by the utility model includes a conductive grounding block, a conductive bolt, a conductive first nut, and a conductive second nut, and the head of the bolt is locked into the groove of the grounding block And welded together with the ground block, the first nut and the second nut are sequentially locked on the other end of the bolt, and the wire harness terminal is locked and fixed through the first nut and the ground block.

The ground block is welded to the vehicle body.

The bolts are connected to the wiring harness terminals by implant welding.

The second nut is arranged in close contact with the first nut.

A flat washer and a spring washer are inserted between the ground block and the first nut.

The flat washer has a portion beyond the ground block.

The ground block, the bolts, the first nut and the second nut are all made of metallic iron.

The first nut and the second nut use nuts of the same specification.

Adopting the above-mentioned technical scheme, this automobile grounding structure adopts the methods of welding the grounding block and the body, welding the bolts and the grounding block, and fastening and connecting with double nuts, which solves the problem that the resistance of the grounding wire is too large, and the grounding of the wire and the car body Poor contact problem.

Description of drawings

Fig. 1 is a structural schematic front view of an automobile grounding structure of the present utility model.

Fig. 2 is a structural schematic top view of an automobile grounding structure of the utility model.

Fig. 3 is a three-dimensional exploded schematic view of the cooperation between a grounding structure of an automobile and a grounding harness according to the present invention.

Fig. 4 is a schematic diagram of the connection between an automobile grounding structure and a grounding harness according to the present invention.

Fig. 5 is a structural schematic diagram of a vehicle grounding structure cooperating with a plurality of grounding wire harnesses of the present invention.

detailed description

To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementation modes and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

The structure of the utility model as shown in Fig. 1 to Fig. 4 is a kind of automobile grounding structure, including grounding block 1, grounding bolt 6, first nut 4, second nut 5.

In order to solve the problems existing in the current known technology described in the background technology part of this description and overcome its defects, prevent the resistance of the grounding wire from being too large, and lead to poor contact with the grounding point of the car body. The technical scheme that the utility model takes is:

As shown in Figures 1 to 4, in the automobile grounding structure provided by the utility model, the head of the grounding bolt 6 is locked into the grounding block 1 and welded together with the grounding block 1, and the first A nut 4 and a second nut 5 are sequentially locked on the other end of the ground bolt 6 .

The ground block 1 is welded to the vehicle body.

A flat washer 2 and a spring washer 3 are inserted between the ground block 1 and the first nut 4 .

With the above technical solution, one side of the wire harness terminal 7 is closely attached to the side of the flat washer 2, which increases the contact area between the ground block 1 and the wire harness terminal 7, and solves the problem of too much resistance of the ground wire. 4. The way in which the second nut 5 locks the wire harness terminal 7 can prevent loosening and effectively solve the problem of poor contact between the wire and the ground point of the vehicle body.

As shown in Figures 1 to 4, the first nut 4 and the second nut 5 are nuts of the same specification.

Using the above technical solution, the first nut 4 and the second nut 5 are nuts of the same specification, so that they can fit closer together, and the same wrench can be used to lock the first nut 4 and the second nut 5 in the same specification. Above ground bolt 6, play the effect of saving time.

As shown in FIGS. 3 to 4 , the ground bolt 6 is connected to the wire harness terminal 7 by welding.

By adopting the above technical solution, the ground bolt 6 is welded and connected to the wiring harness terminal 7, so that the ground bolt 6 can be prevented from being corroded.

As shown in FIGS. 3 to 4 , the first nut 4 and the second nut 5 are tightly connected to one end of the ground bolt 6 . The second nut 5 is arranged in close contact with the first nut 4 .

With the above technical solution, the first nut 4 and the second nut 5 are tightly connected to one end of the ground bolt 6, which solves the problem that the ground bolt 6 falls off under a large torque, and plays a role of preventing loosening.

As shown in Figure 5, in the automobile grounding structure, by locking and welding the first bolt 6 and the second bolt 8 on the grounding block 1, the function of the grounding block 1 cooperating with two wiring harness terminals at the same time is realized .

Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Making various changes is within the protection scope of the present invention.

Claims (8)

1. an auto ground structure, it is characterised in that: the bonding block (1) of the conduction including being welded on vehicle body, The bolt (6) of conduction, first nut (4) of conduction and second nut (5) of conduction, described bolt (6) Head and bonding block (1) fixing be connected, described first nut (4) and the second nut (5) lock in successively The other end of described bolt (6), is come wire harness by described first nut (4) and described bonding block (1) Terminal (7) is locked.

2. auto ground structure as claimed in claim 1, it is characterised in that: described bolt (6) is locked and is taken Iron block (1) is the most welded together with bonding block (1).

3. auto ground structure as claimed in claim 1, it is characterised in that: described bolt (6) and wire harness Terminal (7) is planted weldering and is connected.

4. auto ground structure as claimed in claim 1, it is characterised in that: described second nut (5) with Described first nut (4) is close to arrange.

5. auto ground structure as claimed in claim 1, it is characterised in that: described bonding block (1) and institute State and between the first nut (4), be also inserted in plain washer (2) and spring washer (3).

6. auto ground structure as claimed in claim 5, it is characterised in that: described plain washer (2) has Part beyond bonding block (1).

7. auto ground structure as claimed in claim 1, it is characterised in that: described bonding block (1), spiral shell Bolt (6), the first nut (4) and the second nut (5) are metallic iron material.

8. auto ground structure as claimed in claim 1, it is characterised in that: described first nut (4) and Second nut (5) is the nut of same size.