A self-positioning bolt-in hinge for a van rear door and a van

Abstract

The utility model discloses a kind of self-positioning bolt built-in hinge for van rear door and van, it is related to van rear door hinge technical field, wherein the specific structure of self-positioning bolt built-in hinge includes: hinge seat, is installed on the rear door column of van rear door, plug weld hole is set on the side surface of hinge seat, and the top of hinge seat is provided with pin mounting hole, plug weld hole is communicated with pin mounting hole;Rear door hinge, is installed on the rear door panel of van rear door;Pin, one end is set in pin mounting hole, the other end is set in hinge seat cooperation connection. Wherein van includes aforementioned self-positioning bolt built-in hinge, the utility model solves the technical problem that safety hazard and service life short are easily produced in prior art rear door hinge structure.

Description

Technical Field

[0001] This utility model relates to the field of rear door hinge technology for vans, and more particularly to a self-positioning bolt built-in hinge for the rear door of a van and the van itself. Background Technology

[0002] As a core tool in logistics transportation, the reliability of the rear door hinges of vans directly affects loading and unloading efficiency and operational safety. Their sturdiness and durability are key factors in ensuring cargo safety and improving transportation flow. Therefore, selecting high-quality, high-performance rear door hinges is crucial for improving overall logistics transportation efficiency and service quality.

[0003] The current hinge mechanism includes a base, back plate, ear plate, flat round head hexagonal bolt, hexagonal countersunk head bolt, and welding nut. The base and back plate (connected to the door post in the middle) are connected by 4 bolts. The door hinge needs to be aligned with the holes of the upper and lower ear plates for door panel installation. There are the following defects: (1) Under long-term alternating load, the traditional split structure (base and back plate bolt connection + welded independent ear plate) is prone to fatigue cracks due to stress concentration in the ear plate welding area, which leads to hinge structure failure. At the same time, the increased clearance of the pivot causes the door panel to sink, resulting in opening and closing jamming and safety hazards. (2) The bolt exposed installation scheme exposes the bolt head to the external environment, which is easily corroded by rainwater and salt spray, resulting in rust and loosening, weakening the connection strength. The operation of aligning multiple bolt holes is time-consuming, and the external detachable structure has anti-theft defects. (3) Door panel installation requires precise matching of the hinge seat double bracket holes, which has poor tolerance adaptability and is difficult to adjust. The opening and closing process lacks a buffer mechanism, resulting in high operating resistance, high impact noise, and accelerated component wear. Utility Model Content

[0004] The purpose of this utility model is to provide a self-positioning bolt built-in hinge for the rear door of a van and the van itself, which solves the technical problems of safety hazards and short service life of the rear door hinge structure in the prior art.

[0005] This application discloses a self-positioning bolt-embedded hinge for the rear door of a van, comprising: A hinge seat is installed on the rear door pillar of the rear door of a van. The hinge seat has a plug welding hole on its side and a pin mounting hole on its top. The plug welding hole communicates with the pin mounting hole. Rear door hinge, installed on the rear door panel of the rear door of the van; The pin has one end set inside the pin mounting hole and the other end set in the hinge seat for connection.

[0006] This application designs a hinge seat that can be further reinforced and fixed by plugging welding holes, thereby improving the stability of the pin assembly.

[0007] Based on the above technical solution, the embodiments of this application can be further improved as follows: Furthermore, the top of the pin is provided with a tapered guide portion, and the top of the pin is longitudinally inserted into the rear door hinge. The advantage of this step is that the tapered shape facilitates subsequent assembly.

[0008] Furthermore, the pin and the pin mounting hole are interference-fitted. The beneficial effect of this step is that the interference fit can achieve stability after assembly.

[0009] Furthermore, the hinge seat is a one-piece molded part. The advantage of this step is that the gap can be reduced and the assembly accuracy can be improved by using a one-piece molded part.

[0010] Furthermore, the hinge seat includes: The fixed section is bolted to the rear door pillar; The assembly section is located on one side of the fixed section.

[0011] Furthermore, the bolt is located on the inside of the rear door pillar. The advantage of this step is that the stability of the connection structure is ensured by using a concealed bolt.

[0012] Furthermore, there are at least two bolts, and the bolts are spaced apart along the height direction of the fixed section. The advantage of this step is that the stability of the connection can be guaranteed by using two bolts.

[0013] Furthermore, the height of the assembly section is lower than the height of the fixing section. The beneficial effect of this step is that using sections of different heights can ensure the strength of the hinge seat.

[0014] Furthermore, a washer is provided between the top of the hinge seat and the bottom of the rear door hinge. The beneficial effect of this step is that the washer can reduce wear between the two.

[0015] This application also discloses a van that includes the aforementioned self-locating bolt-integrated hinge.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This application provides a plug welding hole on the hinge seat, through which the pin is further fixed, thereby ensuring the stability of the pin after installation and thus ensuring the strength of the hinge seat.

[0017] 2. This application adopts a built-in bolt assembly structure, which avoids the bolts being exposed on the outside, providing natural protection for the bolt connection and greatly reducing the bolts from being corroded by the external environment. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a self-positioning bolt-in-place hinge for the rear door of a van, as described in specific embodiment 1 of this utility model. Figure 2 for Figure 1 A schematic diagram of the structure after removing the rear door panel and rear door hinges; Figure 3 for Figure 1 Schematic diagram of the middle hinge seat; The attached figures are labeled as follows: 1-Hinge seat; 2-Rear door of van; 3-Rear door pillar; 4-Plug welding hole; 5-Pin mounting hole; 6-Rear door hinge; 7-Rear door panel; 8-Pin; 9-Washer; 101-Fixed section; 102-Assembly section; 103-Bolt. Detailed Implementation

[0020] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] In the description of this application, it should be understood that the terms "upper" and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this utility model.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "setup," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0024] Example 1: like Figure 1-3 As shown in the figure, this application discloses a self-positioning bolt built-in hinge for the rear door of a van. Specifically, it is applied to the rear door of a van and adopts a dual locking mechanism of concealed installation and pins, which can not only ensure high load-bearing capacity and long service life, but also achieve rapid installation.

[0025] like Figure 1 , 2 As shown, the specific structure of this application includes: A hinge seat 1 is installed on the rear door pillar 3 of the rear door 2 of the van. The hinge seat 1 has a plug welding hole 4 on its side and a pin mounting hole 5 on its top. The plug welding hole 4 communicates with the pin mounting hole 5. The rear door 2 of the van includes the rear door pillar 3 and the rear door panel, which is an existing mechanism and will not be described in detail here. The rear door hinge 6 is installed on the rear door panel 7 of the rear door 2 of the van; The pin 8 has one end set inside the pin mounting hole 5 and the other end set in the hinge seat 1 for connection. The pin 8 facilitates the rotation function.

[0026] The structure of this application will be further explained as follows: The hinge seat 1 in this application is a one-piece molded part, which can be composed of two parts: a fixed section 101 and an assembly section 102. The fixed section 101 is installed on the rear door pillar 3 by bolts 103, while the assembly section 102 is located on one side of the fixed section 101. The height of the assembly section 102 is lower than the height of the fixed section 101. That is, this application eliminates the traditional split base, back plate, and welded independent ear plate structure. The hinge seat is integrally molded using high-strength materials and precision casting process. This integrated design eliminates the cumulative tolerances and assembly gaps caused by the combination of multiple parts, and provides a rigid and uniformly referenced support platform for the pin, which is the basis for achieving high-precision positioning.

[0027] like Figure 3 As shown, this application provides a plug weld hole 4 and a pin mounting hole 5 on the hinge seat 1, thus forming a double locking mechanism. The first locking mechanism is the interference fit between the pin 8 and the pin mounting hole 5, which provides a strong initial radial constraint force and a certain resistance to axial movement. The second locking mechanism is the fit between the plug weld hole 4 and the pin mounting hole 5. After the pin 8 is installed in place, the interface between the pin and the hinge seat hole is arc welded through the plug weld hole. The molten solder penetrates and fills the microscopic gap near the interference fit interface. After cooling, a high-strength metallurgical fusion layer is formed, thereby avoiding the danger of axial movement and radial loosening, and also improving the ability to resist fatigue loads.

[0028] In one embodiment, such as Figure 2 As shown, the top of the pin 8 is provided with a tapered guide portion, and the top of the pin 8 is longitudinally inserted into the rear door hinge 6. To simplify door panel installation and improve positioning efficiency, the rear door hinge 6 on the door panel is designed to longitudinally insert into the pin 8 on the hinge seat 1. The top of the pin is designed with a significant guide chamfer or tapered guide portion, which facilitates the smooth sliding of the rear door hinge 6 under gravity or slight external force and automatic alignment with the pin body. This insertion structure significantly reduces the time and difficulty of hole-fixing operations, achieving rapid and accurate self-positioning installation of the door panel relative to the hinge. Simultaneously, this structure allows the door panel to open at an angle of up to 270°.

[0029] Specifically, the pin and the pin mounting hole are interference-fitted.

[0030] The pin is made of high-hardness, wear-resistant material, and its diameter is designed with a precisely controlled interference fit (0.03mm~0.08mm) between it and the precision mounting hole on the hinge seat. The pin is forcefully pressed into the mounting hole through a cold-pressing process, forming a radially clearance-free interference fit. This fit eliminates radial play between the pin and the hinge seat hole during the initial assembly stage, ensuring that the core axis position of the hinge rotating pair remains fixed. This guarantees the high accuracy and long-term stability of the door panel's opening and closing trajectory, effectively preventing the door panel from shifting or sagging under long-term use or bumpy road conditions.

[0031] Furthermore, to simplify door panel installation and improve positioning efficiency, the top of the pin in this application is provided with a tapered guide, which simplifies assembly efficiency and enables self-positioning installation. Moreover, the structure of this application allows the door panel to open at an angle of up to 270°.

[0032] To improve the rust prevention capability of this application, the bolt 103 is located on the inner side of the rear door pillar 3. That is, the hinge seat 1 in this application adopts a hole-free outer side and double bolt anchoring on the inner side, so that the bolt is located on the inner side and the outer surface of the hinge seat is flat.

[0033] Specifically, there are at least two bolts 103, and the bolts 103 are spaced apart along the height direction of the fixing section 101. At the same time, the bolts 103 are completely embedded in the bolt holes of the rear door pillar 3. The double bolt design not only simplifies assembly but also improves reliability.

[0034] A washer 9 is provided between the top of the hinge seat 1 and the bottom of the rear door hinge 6.

[0035] Specifically, the absence of holes on the outside and the concealed bolts on the inside not only block most pollutants but also reduce infiltration points, significantly improving the vehicle's environmental adaptability, corrosion resistance, and long-term reliability.

[0036] Further explanation is provided regarding this application: The specific structure of this application includes a hinge seat 1, a pin 8, a bolt 103, a washer 9 (nylon), a rear door hinge 6, a rear door panel 7, a rivet, a rear door pillar 3, and a rear door panel 7. The hinge seat 1 has a pin mounting hole 5, a plug welding hole 4, and a bolt mounting hole on one side. The pin 8 is pressed into the hinge seat 1 with an interference fit and welded using the plug welding hole 4, forming a dual locking structure of mechanical interference and metallurgical fusion, significantly improving the fatigue strength of the hinge seat assembly. The hinge seat 1 is fixed to the rear door pillar with bolts. The bolt 103 is tightened entirely from the inside of the rear door pillar 3, with its head hidden inside the vehicle body, achieving external hole-free anchoring and solving the problems of exposed bolt corrosion and theft. The rear door hinge 6 in this application is installed on the rear door panel 7 with rivets.

[0037] Example 2: This application also discloses a van, including the self-positioning bolt built-in hinge of embodiment 1, that is, the rear door of the van is equipped with the self-positioning bolt built-in hinge of embodiment 1, and other components can be existing components, as long as the function of the van is realized.

[0038] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A self-positioning bolt-embedded hinge for the rear door of a van, characterized in that, include: A hinge seat (1) is installed on the rear door pillar (3) of the rear door (2) of the van. A plug welding hole (4) is provided on the side of the hinge seat (1), and a pin mounting hole (5) is provided on the top of the hinge seat (1). The plug welding hole (4) is connected to the pin mounting hole (5). The rear door hinge (6) is installed on the rear door panel (7) of the rear door (2) of the van; The pin (8) has one end set inside the pin mounting hole (5) and the other end set in the hinge seat (1) for connection.

2. The self-positioning bolt-embedded hinge according to claim 1, characterized in that, The top of the pin (8) is provided with a tapered guide portion, and the top of the pin (8) is longitudinally inserted into the rear door hinge (6).

3. The self-positioning bolt-embedded hinge according to claim 1, characterized in that, The pin (8) is interference-fitted with the pin mounting hole (5).

4. The self-positioning bolt-embedded hinge according to claim 1, characterized in that, The hinge seat (1) is a one-piece molded part.

5. The self-positioning bolt-embedded hinge according to claim 4, characterized in that, The hinge seat (1) includes: The fixed section (101) is installed on the rear door pillar (3) by bolts (103); The assembly section (102) is located on one side of the fixed section (101).

6. The self-positioning bolt-embedded hinge according to claim 5, characterized in that, The bolt (103) is located on the inside of the rear door post (3).

7. The self-positioning bolt-embedded hinge according to claim 5, characterized in that, There are at least two bolts (103), and the bolts (103) are spaced apart along the height direction of the fixed section (101).

8. The self-positioning bolt-embedded hinge according to claim 5, characterized in that, The height of the assembly section (102) is lower than the height of the fixing section (101).

9. The self-positioning bolt-embedded hinge according to claim 1, characterized in that, A washer is provided between the top of the hinge seat (1) and the bottom of the rear door hinge (6).

10. A van, characterized in that, Includes the self-locating bolt-embedded hinge as described in any one of claims 1-9.

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