Hidden hinge and vehicle door

By employing a concealed hinge design, and utilizing the combination of a concealed cover and a sliding cavity, the problem of abnormal noise and loosening of loader door hinges in harsh environments is solved, achieving hinge protection and synchronous sliding, and extending service life.

CN224048921UActive Publication Date: 2026-03-27FUJIAN SOUTH CHINA HEAVY IND MASCH MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Loader door hinges are prone to making abnormal noises and loosening under prolonged natural environment and harsh conditions.

Method used

A concealed hinge is designed to cover the hinge body by using a concealed cover and a sliding cavity. Guide blocks and sealing layers are set to reduce the corrosion of the external environment, and the hinge slides synchronously during the opening and closing of the car door to avoid bumps.

Benefits of technology

It effectively protects the hinge body, reduces abnormal noise and loosening, and extends service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224048921U_ABST
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Abstract

The utility model discloses a hidden hinge and car door, including connecting car body and car door hinge main part, also including the hidden cover that shields the hinge main part, the car body is provided with the slide cavity that matches with the hidden cover, the cross section of the slide cavity is fan-shaped, one end of the hidden cover is fixed with the guide block that matches with the slide cavity, and the other end of the hidden cover is fixed with the guide block. One end of the guide block is fixedly connected with the hinge body, the other end of the guide block is fixedly connected with the automobile door, the arc face of the guide block is attached to the arc face of the sliding cavity, and when the automobile door is opened and closed, the automobile door drives the hidden cover to rotate along the hinge body. The hidden cover is arranged to shield the hinge main body, so that the hinge main body is isolated from the external environment and is prevented from being eroded by the external environment, and meanwhile, the sliding cavity matched with the hidden cover is formed in an automobile body. The hidden cover is arranged on the hinge body, so that the hidden cover can synchronously slide when the automobile door is opened and closed, the hinge body is protected by the hidden cover in the whole process, and the problems of abnormal sound and looseness are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field especially relates to a hidden hinge and vehicle door. BACKGROUND

[0002] When building forest road or carrying bulk material on construction site, the loader is a kind of commonly used engineering machinery, such as in the logging field, the loader can be equipped with fork, jaw claw and other grabbers, and wood is shovelled or grabbed. The loader door and the vehicle body are connected by hinges, and the hinges are exposed, and under the condition of long time natural environment (such as rain) and harsh working environment, the loader door hinge is prone to abnormal noise and looseness, so a device for protecting the loader door hinge is needed. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model wants to solve the technical problem that a hidden hinge and vehicle door are provided, and the hinge of the loader door is hidden to reduce the problems such as abnormal noise and looseness that may occur in the loader door.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a kind of hidden hinge, including the hinge main body of connecting vehicle body and vehicle door, still include the cover of hiding of the hinge main body, the hidden cover is square, the sliding cavity that is cooperated with the hidden cover is provided on the vehicle, the cross section of the sliding cavity is scallop, the guide block that is cooperated with the sliding cavity is fixed with the one end of the hidden cover, the other end is fixedly connected with the vehicle door, the arc surface of the guide block is attached with the arc surface of the sliding cavity, the guide block and the sliding cavity are attached still be provided with sealing layer, when the vehicle door opens and closes, the vehicle door drives the hidden cover rotates along the hinge main body, the hidden cover is still fixed with isolation block close to the hinge main body, to reduce the entry of external impurities.

[0006] In the process that vehicle door opens and closes, the middle part of the hidden cover is provided with the arc groove that is cooperated with the hinge main body, to prevent the possible knock of hinge main body and hidden cover.

[0007] The guide block includes several, several guide blocks are arranged along the edge of the hidden cover in dentiform, and several sliding channels are arranged in the sliding cavity and cooperated with the guide block.

[0008] A kind of loader door, using the hidden hinge as described above.

[0009] The utility model has the advantages that:

[0010] This utility model conceals the hinge body by using a hidden design, isolating it from the external environment and preventing corrosion. Simultaneously, a sliding cavity is incorporated into the vehicle body to cooperate with the hidden cover. This allows the hidden cover to slide synchronously when the door opens and closes, ensuring the cover protects the hinge body throughout the process and resolving issues such as rattling and loosening. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of a concealed hinge applied to a loader cab according to a specific embodiment of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of a concealed hinge applied to a car door when it is closed, according to Embodiment 1 of this utility model;

[0013] Figure 3 yes Figure 2 A schematic diagram of the cross-section principle of aa;

[0014] Figure 4 This is a schematic diagram of the structure of a concealed hinge applied to a car door when it is opened from the rear, according to Embodiment 1 of this utility model;

[0015] Figure 5 This is a schematic diagram of the structure of the hidden cover provided in Embodiment 1 of this utility model;

[0016] Figure 6 This is a schematic diagram of the structure of a concealed hinge applied to a car door when it is closed, according to Embodiment 2 of this utility model;

[0017] Figure 7 This is a schematic diagram of the structure of a concealed hinge applied to a car door when it is opened from the rear, according to Embodiment 2 of this utility model;

[0018] Figure 8 This is a schematic diagram of the structure of the hidden cover provided in Embodiment 2 of this utility model;

[0019] In the picture:

[0020] 1. Body; 2. Door; 3. Hinge body; 4. Hidden cover; 11. Slide cavity; 41. Guide block; 42. Arc groove; 43. Sealing layer; 44. Isolation block; 111. Slide track. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1: As Figure 1 As shown, this utility model provides a concealed hinge and uses it in a loader door; as Figures 2 to 5As shown, including the hinge body 3 connecting the vehicle body 1 and the door 2, also includes the hidden cover 4 shielding the hinge body 3, that is, using the hidden cover 4 to prevent the hinge body 3 exposed, in order to facilitate installation, the hidden cover 4 is square; The technical scheme adopted in the case is to shield the hinge body 3 by using the hidden cover 4, in order to ensure that it can also be shielded when the door is rotating, so the synchronism of the hidden cover 4 and the hinge body 3 in rotation must be considered, that is, the door 2 can drive the hidden cover 4 to rotate, so the sliding cavity 11 matched with the hidden cover 4 is arranged on the vehicle body 1, the cross section of the sliding cavity 11 is fan-shaped, one end of the hidden cover 4 is fixedly provided with the guide block 41 matched with the sliding cavity 11, the other end is fixedly connected with the door 2, the arc surface of the guide block 41 is attached to the arc surface of the sliding cavity 11, when the door 2 is opened and closed, the door 2 drives the hidden cover 4 to rotate along the hinge body 3; In this way, when the door 2 is opened, the door 2 drives the hidden cover 4 to rotate, so that the guide block 41 slides into the sliding cavity 11, when the door 2 is closed, the door 2 drives the hidden cover 4 to rotate, so that the guide block 41 slides out of the sliding cavity 11 and resets, during the opening and closing of the door 2, since the arc surface of the guide block 41 is attached to the arc surface of the sliding cavity 11, the influence of external environmental factors on the hinge body 3 can also be effectively weakened, in order to better isolate from the external environment, the guide block 41 attached to the sliding cavity 11 is also provided with a sealing layer 43, and the hidden cover 4 is also fixedly provided with an isolation block 44 close to the hinge body 3, so as to reduce the entry of external impurities, it should be noted that, according to the use requirement, the isolation block (not shown in the figure) can also be arranged at the end of the sliding cavity 11; At the same time, the entire guide block 41 can also play a limiting role during the opening and closing process, so as to reduce the pressure on the hinge body 3.

[0023] In order to prevent the hidden cover 4 and the hinge body 3 from colliding during the opening and closing of the door, the middle part of the hidden cover 4 is provided with the arc groove 42 matched with the hinge body 3.

[0024] Embodiment 2: as Figures 6 to 8 As shown, the difference between embodiment 1 and embodiment 2 is that the guide block 41 includes a plurality of guide blocks 41 arranged in a tooth shape along the edge of the hidden cover 4, and the sliding cavity 11 is provided with a plurality of sliding grooves 111 matched with the arrangement of the guide block 41, so that the pressure distribution will be more uniform, so as to further reduce the problems of abnormal sound and looseness and prolong the service life of the hinge body 3.

[0025] The utility model is described through preferred embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of the present application belong to the scope of protection of the utility model.

Claims

1. A concealed hinge comprising a hinge body (3) connecting a vehicle body (1) and a vehicle door (2), characterized in that: Further comprising a hidden cover (4) covering the hinge body (3), the vehicle body (1) is provided with a sliding cavity (11) cooperating with the hidden cover (4), the sliding cavity (11) is a sector in cross section, one end of the hidden cover (4) is fixedly provided with a guide block (41) cooperating with the sliding cavity (11), the other end is fixedly connected with the vehicle door (2), the curved surface of the guide block (41) is attached to the curved surface of the sliding cavity (11), when the vehicle door (2) is opened or closed, the vehicle door (2) drives the hidden cover (4) to rotate along the hinge body (3).

2. The hidden hinge according to claim 1, characterized in that: The middle part of the hidden cover (4) is provided with an arc groove (42) cooperating with the hinge body (3).

3. The hidden hinge according to claim 2, characterized in that: The guide block (41) attached to the sliding cavity (11) is further provided with a sealing layer (43).

4. The hidden hinge according to claim 1, characterized in that: The hidden cover (4) is square.

5. The hidden hinge according to claim 1, characterized in that: The hidden cover (4) is further fixedly provided with a separation block (44) near the hinge body (3) to reduce the entry of external impurities.

6. The hidden hinge according to claim 1, characterized in that: The guide block (41) comprises a plurality of guide blocks (41), the plurality of guide blocks (41) are arranged in a tooth shape along the edge of the hidden cover (4), and the sliding cavity (11) is provided with a plurality of sliding channels (111) cooperating with the arrangement of the guide blocks (41).

7. A loading vehicle door, characterized by: The hidden hinge according to any one of claims 1-6.