Protective structure of bonding seat and automotive bonding seat

Abstract

The utility model relates to the field of clamping pieces in conductive connection, and provides a protective structure of a bonding seat and a vehicle bonding seat, the vehicle bonding seat comprises the protective structure, a bonding wire, a second flat gasket and a lock washer, a clamping surface is formed between the first flat gasket and the second flat gasket, and the bonding wire is provided with a wiring conducting strip which is clamped on the clamping surface in a sealing manner; the lock washer, the first flat gasket, the bond strap and the second flat gasket are sequentially arranged on a stud of the locking nut of the protective structure of the bond strap seat in a sleeving mode, and the locking nut of the protective structure of the bond strap seat is arranged on the stud in a sealed and locked mode. When the first flat gasket and the second flat gasket are locked on the stud through the locking nut, the first flat gasket and the second flat gasket can seal and clamp the power connection end of the bond strap. And the bonding surface is matched with the end surface of the base, so that the whole bonding seat can be tightly matched, the bonding seat has high matching precision, and good conductivity of the bonding surface and the stud is ensured.

Description

Technical Field

[0001] The utility model relates to the field of clamping pieces for conductive connection, in particular to a protective structure of a grounding seat and a grounding seat for a vehicle. Background Art

[0002] The series, parallel or mixed circuits of the car have positive and negative poles. In actual applications, the car circuit generally adopts a single-wire system, that is, the positive line of the car power supply is directly connected to each electrical device, the negative line of the car power supply is directly connected to the metal parts of the truck body, and the negative line of the electrical device is also connected to the metal parts of the body. This way of connecting the negative line with the metal parts of the body is called grounding. Grounding is very important for the entire circuit. Poor grounding can easily cause voltage drop, weakened car power, dim lights and other problems, leading to an increase in vehicle failure rate. In actual applications, the wiring harness is usually connected to the metal parts of the body by bolts, so the connecting bolts are crucial to the grounding effect.

[0003] Most existing grounding structures use threaded holes to fix the grounding or use conventional bolts welded to the metal body as grounding bolts, which may easily lead to poor grounding failure due to insufficient protection of the grounding surface (covered by paint, grounding surface welding ablation, etc.).

[0004] In the patent document with application number CN201120332459.3 and application name “A grounding wire connecting bolt for automobile”, it is recorded that: “When in use, the head of the grounding wire is placed between the flat washer and the spring washer, and then the bolt is installed into the mounting hole; when the nut is required for installation, the bolt is passed through the mounting hole and fastened with the nut. In this process, the paint scraping effect of the scraping groove and the further paint storage effect of the storage tank improve the conductivity of the grounding wire connecting bolt.”

[0005] In the solution of the above patent, paint is scraped through a "scraping groove" and paint is stored through a "storage trough" to ensure the conductive performance of the grounding wire. The paint scraping operation of the "scraping groove" can easily destroy the fitting accuracy of the nut, resulting in an increase in the fitting clearance, making the bolt easy to loosen, affecting the service life and other problems. Utility Model Content

[0006] The utility model aims to provide a protective structure of a grounding seat and a grounding seat for a vehicle, aiming to improve the problem that the existing grounding seat uses a scraping method to remove paint, which easily destroys the matching accuracy between parts.

[0007] To achieve the above object, the utility model adopts the following technical solution: a protective structure of a grounding base, comprising a base, a stud arranged on the base, a first flat washer and a locking nut engaged with the thread of the stud, wherein the locking nut and the stud are sealed and locked;

[0008] The end surface of the base with the stud is a grounding surface, and the grounding surface forms a sealing fit with the first flat gasket when they are in contact with each other; the area of ​​the first flat gasket is larger than the area of ​​the grounding surface;

[0009] The base is provided with a welding portion for welding.

[0010] Preferably, the flatness of the first flat pad and the grounding surface is less than or equal to 0.2 μm.

[0011] Preferably, the torque between the locking nut and the stud is greater than 16 N·m.

[0012] Preferably, the base extends axially toward the bottom surface to form a welding portion, or a welding portion is provided on the end surface of the base away from the stud.

[0013] Preferably, the sum of the lengths of the welding portion and the base is between 10 and 20 mm.

[0014] Preferably, a plurality of locking nuts are provided, and the plurality of locking nuts are stacked and locked on the stud.

[0015] Preferably, the stud and the base are integrally formed.

[0016] A vehicle grounding seat is also provided, comprising the protective structure of the grounding seat as described above;

[0017] It also includes a grounding wire, a second flat washer and a stop washer, a clamping surface is formed between the first flat washer and the second flat washer of the protective structure of the grounding seat, and the grounding wire is provided with a wiring conductive sheet that is sealed and clamped on the clamping surface;

[0018] The stop washer, the first flat washer, the grounding wire and the second flat washer are sequentially sleeved on the studs of the locking nut of the protective structure of the grounding seat, and the locking nut of the protective structure of the grounding seat is sealingly locked on the studs.

[0019] Preferably, the matching flatness between the first flat pad and the second flat pad is less than or equal to 0.2 μm.

[0020] Preferably, a spring washer is further included, wherein the spring washer is located between the second flat washer and the locking nut and is arranged on the stud.

[0021] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0022] 1. When the first flat washer and the second flat washer are locked on the stud by the locking nut, the first flat washer and the second flat washer can form a sealed clamp for the electrical end of the grounding wire. And the grounding surface of the base end surface is matched, so that the entire grounding seat can be closely matched with a high matching accuracy, ensuring good electrical conductivity of the grounding surface and the stud.

[0023] 2. When the first flat washer is directly matched with the base, it is locked by the locking bolt. The sealing fit between the first flat washer and the grounding surface can prevent paint from invading the end surface of the base, so the base can be protected when the grounding wire is overlapped.

[0024] 3. The area of ​​the first flat washer is larger than the area of ​​the base, so that the first flat washer can be easily removed from the stud to be replaced with a new one, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the vehicle grounding seat of the utility model when the grounding wire is assembled;

[0026] Figure 2 This is an exploded view of the vehicle grounding seat of the utility model when the grounding wire is assembled;

[0027] Figure 3 It is a schematic diagram of the vehicle grounding base in the state of preventing paint intrusion according to the utility model;

[0028] Figure 4 The utility model is an exploded view of the vehicle grounding base in a state of preventing paint intrusion.

[0029] Description of reference numerals:

[0030] 10. Base; 101. Stud; 102. Grounding surface; 103. Welding part;

[0031] 20. First flat washer; 30. Second flat washer; 40. Lock washer; 50. Lock nut; 60. Spring washer; 70. Grounding wire. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] When an element is referred to as being “fixed to” or “disposed on” or “provided on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] Please refer to Figure 1 and Figure 2 As shown, the present embodiment provides a protective structure of a grounding seat, including a base 10, a stud 101 arranged on the base 10, a first flat washer 20 and a locking nut 50 threadedly engaged with the stud 101, the stud 101 and the base 10 can be arranged in a vertical relationship to ensure that the placement of the first flat washer 20 will not be affected by the stud 101, and at the same time, the locking nut 50 and the stud 101 can also be well sealed and locked; the end face of the base 10 with the stud 101 is a grounding surface 102, and the grounding surface 102 forms a sealing fit with the first flat washer 20 when they are in contact; the area of ​​the first flat washer 20 is larger than the area of ​​the grounding surface 102; and a welding portion 103 for welding is provided on the base 10.

[0038] like Figure 1 and Figure 2 As shown, when in use, the base 10 and the stud 101 need to be firstly assembled to prevent paint intrusion, that is, the base is fixed to the frame by welding through the welding part, and then the stud and the base need to be protected from spray paint to ensure that the base 10 and the stud 101 have good conductivity and improve practicality.

[0039] When using, Figure 1 and Figure 2As shown, the first flat washer 20 is locked on the grounding surface of the base 10 by the locking nut 50, so that the first flat washer 201 and the grounding surface 102 form a sealed assembly to achieve the purpose of preventing paint intrusion. If oil and gas intrude, the conductivity will be affected. Similarly, a sealing setting is also required between the stud 101 and the nut 50 to prevent paint intrusion and ensure the conductivity of the stud.

[0040] In this embodiment, the flatness of the first flat washer 201 and the grounding surface 102 is less than or equal to 0.2 μm, and the purpose of sealing can be achieved by simply tightening the locking nut 50. Furthermore, the area of ​​the first flat washer 201 is larger than the area of ​​the grounding surface 102, so the first flat washer 20 will protrude from the base 10 at the side, and the first flat washer 20 can be easily removed from the stud 101, thereby improving practicality.

[0041] In actual operation, the first flat washer 20 and the locking nut 50 used for protection can be replaced with new ones to ensure the conductivity of the entire grounding seat. Alternatively, they can be used directly, and the contact part between the first flat washer 20 and the grounding surface 102 has good conductivity, which has little impact and reduces the waste of accessories.

[0042] like Figure 1 and Figure 2 As shown, in the present embodiment, a plurality of locking nuts 50 are provided, and the plurality of locking nuts 50 are stacked and locked on the stud 101 to form protection for the stud; and the locking of the plurality of locking nuts 50 has a good anti-loosening effect, and can provide a stable locking force to ensure the contact of the grounding wire and ensure good conductivity.

[0043] Furthermore, in this embodiment, the torque between the locking nut 50 and the stud 101 is greater than 16 N·m, so a good locking purpose can be achieved, and at the same time, a sealing performance can be achieved to ensure that paint does not invade or penetrate, thereby ensuring the conductive performance of the stud 101.

[0044] In this embodiment, the base 10 is extended axially to form a welding portion 103 (such as Figure 1 and Figure 2 Alternatively, a welding portion 103 (not shown) is provided on the end surface of the base 10 away from the stud 101. The provision of the welding portion 103 can prevent the base 10 from being burned onto the grounding surface 102 when being welded and fixed, thereby ensuring that the grounding wire has the largest contact area with the base 10, thereby forming good conductivity.

[0045] Specifically, if the base 10 is cylindrical, the welding portion 103 may be cylindrical, so that the appearance of the base 10 is beautiful. If different contour shapes are used to distinguish the welding parts, for example, the base 10 is cylindrical, and the welding portion 103 is a regular polygonal prism (hexagonal prism or octagonal prism, etc.), so as to ensure that the welding is on the welding portion 103 and reduce the probability of human error.

[0046] Furthermore, in this embodiment, the sum of the lengths of the welding portion 103 and the base 10 is between 10 and 20 mm, preferably 15 mm. This length will not affect the size of the vehicle assembly and can also prevent ablation caused by welding, thus having good practicality.

[0047] In this embodiment, the stud 101 and the base 10 are integrally formed, so that the structural strength between the base 10 and the stud 101 can be ensured, a stable structural support can be provided, and the stability of the structural assembly of the vehicle ground seat can be ensured.

[0048] Embodiment 2

[0049] like Figure 3 and Figure 4 As shown, this embodiment provides a vehicle grounding seat, including the protective structure of the grounding seat recorded in embodiment 1; it also includes a grounding wire 70, a second flat washer 30 and a stop washer 40, a clamping surface is formed between the first flat washer 20 and the second flat washer 30 of the protective structure of the grounding seat, and the grounding wire 70 is provided with a wiring conductive sheet that is sealed and clamped on the clamping surface; the stop washer 40, the first flat washer 20, the grounding wire 70 and the second flat washer 30 are sequentially sleeved on the stud 101 of the locking nut 50 of the protective structure of the grounding seat, and the locking nut 50 of the protective structure of the grounding seat is sealed and locked on the stud 101.

[0050] During the assembly, in order to improve or ensure the electrical conductivity, the first flat washer 20 and the locking nut 50 used as protection can be removed and replaced with new first flat washer 20 and locking nut 50. Therefore, the locking washer 40, the first flat washer 20, the grounding wire 70 and the second flat washer 30 are sequentially put on the stud 101, and finally locked by the locking nut 50.

[0051] The grounding surface 102 is fixed on the clamping surface (i.e., between the first flat pad 20 and the second flat pad 30) to form a good fastening effect; at the same time, the clamping cooperation of the first flat pad 20 and the second flat pad 30 can tightly fit the conductive end of the grounding wire to prevent oil or dust from invading, thereby ensuring the good conductive performance of the entire vehicle grounding seat.

[0052] In this embodiment, the flatness of the first flat pad 20 and the second flat pad 30 is less than or equal to 0.2 μm, so the foolproof effect can be achieved, that is, the first flat pad 20 and the second flat pad 30 can be used at will to ensure the flatness of the fit. In this embodiment, the diameter of the first flat pad 20 is designed to be larger than the diameter of the second flat pad 30, so that the first flat pad 20 can be conveniently removed from the stud 101 of the base 10, and the grounding wire and the second flat pad 30 can also be removed together, thereby improving practicality. At the same time, the improved flatness can improve the matching accuracy with the grounding wire, so as to achieve the purpose of forming a sealed fit with the grounding wire.

[0053] like Figure 3 and Figure 4 As shown, this embodiment also includes a spring washer 60, which is located between the second flat washer 30 and the locking nut 50 and is arranged on the stud 101. Placing the spring washer 60 between the locking nut 50 and the second washer can provide axial elastic force when the locking nut 50 is tightened, play a role in resisting the tightening, and then achieve the purpose of loosening; at this time, only one locking nut 50 is needed for locking.

[0054] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A protective structure for a grounding base, characterized in that: It comprises a base, a stud arranged on the base, a first flat washer and a locking nut engaged with the thread of the stud, wherein the locking nut and the stud are sealed and locked; The end surface of the base with the stud is a grounding surface, and the grounding surface forms a sealing fit with the first flat gasket when they are in contact with each other; the area of ​​the first flat gasket is larger than the area of ​​the grounding surface; The base is provided with a welding portion for welding.

2. The protective structure of the grounding base according to claim 1, characterized in that: The matching flatness between the first flat pad and the grounding surface is less than or equal to 0.2 μm.

3. The protective structure of the grounding base according to claim 1, characterized in that: The torque force between the locking nut and the stud is greater than 16 N·m.

4. The protective structure of the grounding base according to claim 1, characterized in that: The base extends axially toward the bottom surface to form a welding portion, or a welding portion is provided on an end surface of the base away from the stud.

5. The protective structure of the grounding base according to claim 4, characterized in that: The sum of the lengths of the welding portion and the base is between 10 and 20 mm.

6. The protective structure of the grounding base according to claim 1, characterized in that: The locking nuts are provided in plurality, and the plurality of locking nuts are stacked and locked on the stud.

7. The protective structure of the grounding base according to claim 1, characterized in that: The stud and the base are integrally formed.

8. A vehicle grounding seat, characterized in that: A protective structure comprising the grounding base as described in any one of claims 1 to 7; It also includes a grounding wire, a second flat washer and a stop washer, a clamping surface is formed between the first flat washer and the second flat washer of the protective structure of the grounding seat, and the grounding wire is provided with a wiring conductive sheet that is sealed and clamped on the clamping surface; The stop washer, the first flat washer, the grounding wire and the second flat washer are sequentially sleeved on the studs of the locking nut of the protective structure of the grounding seat, and the locking nut of the protective structure of the grounding seat is sealingly locked on the studs.

9. The vehicle grounding seat according to claim 8, characterized in that: The matching flatness between the first flat pad and the second flat pad is less than or equal to 0.2 μm.

10. The vehicle grounding seat according to claim 8, characterized in that: It also includes a spring washer, which is located between the second flat washer and the locking nut and is arranged on the stud.

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