Two-section type door opening device capable of preventing door opening from being killed

By introducing a folding rubber cover and a corrugated rubber cover into the two-stage door opening mechanism, the problem of jerking and abnormal resistance caused by lubricant loss is solved, enabling smooth opening and closing of the door and improving the door's sound insulation, dustproofing and waterproofing performance.

CN223867816UActive Publication Date: 2026-02-03CENT SOUTH UNIV +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520431409.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-02-03
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing two-stage door opening mechanism suffers from lubricant loss, causing a jerky feeling and abnormal resistance during the opening process, which affects the door's sound insulation, dustproofing, and waterproofing performance.

Method used

A two-stage door opening device was designed to prevent door opening jamming. By setting folded rubber covers and corrugated rubber covers on the limiter box and the main arm, and utilizing lubrication components and oil injection components, the lubricating oil can be effectively stored and applied, reducing the resistance to opening and closing the door.

Benefits of technology

It effectively prevents door-opening-and-kill phenomena, reduces the force required to open and close the car door, improves the sound insulation, dustproof and waterproof performance of the car door, and extends the service life of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223867816U_ABST
    Figure CN223867816U_ABST
Patent Text Reader

Abstract

The utility model relates to the related technical field of two-section type door opening devices, in particular to a two-section type door opening device capable of preventing door opening from being killed, which comprises a limiter box, a main arm, a check block and a mounting component, the main arm is mounted at the movable position of the limiter box, and the check block is arranged at the mounting position of the main arm. Lubricating grease liquid in the folding rubber cover extrudes grease to the outside of the grease outlet hole through different degrees of elastic deformation, the limiting stopper box and the main arm can be smeared with the lubricating grease, and the limiting stopper box and the main arm are beneficial to long-term repeated use of the lubricating grease two-section type door opening device. The step-shaped folding rubber cover can enlarge the grease storage space of the limiting chamber, reduce the loss amount of lubricating oil, prevent serious pause feeling in the opening process of the automobile door and reduce abnormal resistance during closing, the folding rubber cover elastically extrudes and smears grease to the outer portion of the main arm through the grease outlet hole, the effect of preventing door opening damage is achieved, and the service life of the main arm is prolonged. And opening and closing by a user are facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the technical field of two-stage door opening devices, specifically a two-stage door opening device to prevent door-opening kills. Background Technology

[0002] The two-stage door opening device, in conjunction with components such as the limit arm, limits the maximum opening of the door, ensuring that the door will not open too wide and collide with the vehicle body or other objects, protecting the structural integrity of the door and the vehicle body, and keeping the door open: when the car is parked on a slope or in a certain amount of wind, the door is kept at a set opening angle and will not close automatically, making it convenient for passengers to get on and off or for loading and unloading goods. When the door is opened to different limit positions, the elastic elements and rollers in the limiter box will generate different resistance and tactile sensations, allowing the user to clearly feel the opening status and position changes of the door.

[0003] The existing two-stage door opening mechanism suffers from lubricant loss due to repeated use over a long period, resulting in severe jerking during door opening and abnormal resistance when closing. Although it prevents the door from killing you when you open it, it requires force from the user to open and close. After repeated use, it suffers severe wear and tear, affecting the door's sound insulation, dustproofing, and waterproofing performance. Utility Model Content

[0004] The purpose of this invention is to provide a two-stage door opening device to prevent door-opening kills, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A two-stage door opening device to prevent door-opening kills includes a limiter box, a main arm, a stop block, and a mounting assembly. The main arm is mounted on a movable portion of the limiter box, and the stop block is installed at a mounting portion of the main arm. The limiter box and the main arm are mounted on a movable portion of the mounting assembly. The device also includes a...

[0007] The oil injection assembly is installed on the main arm;

[0008] A lubrication assembly is provided on the main arm;

[0009] The limiter box has a threaded fixing point with an installation hole, the main arm has a limit chamber at its movable part, the limit chamber has a grease injection hole at its oil filling point, the stop block has a rotating shaft at its rotating part, the main arm has a rotating pin at its rotating part, and the rotating pin has a mounting seat at its mounting point.

[0010] The two-stage door opening device for preventing door opening accidents as described above: the main arm moves through the limiter box and the limit chamber, and the pivot pin is movably mounted on the main arm and the mounting base.

[0011] The two-stage door opening device for preventing door opening accidents as described above: the grease injection hole is connected to the limit chamber and installed on the limiter box.

[0012] The two-stage door opening device for preventing door opening accidents as described above: the oil injection component includes a folded rubber cover fixedly connected to the limiting chamber, and the folded rubber cover has an oil outlet hole inside.

[0013] The two-stage door opening device for preventing door opening accidents as described above: three folding rubber covers are provided and are fixedly connected to the limiting chamber in a stepped manner.

[0014] The two-stage door opening device for preventing door opening kills as described above: the lubrication assembly includes a corrugated rubber cover movably mounted on the main arm, and the stop block has an installation groove inside.

[0015] The two-stage door opening device for preventing door opening accidents as described above: the corrugated rubber cover is connected and installed on the mounting groove, and the main arm can be movably installed in the mounting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the lubricating grease liquid inside the folded rubber cover is squeezed to the outside of the oil outlet through different degrees of elastic deformation, which can apply the lubricating grease to the limiter box and the main arm. The two-stage door opening device on the limiter box and the main arm is conducive to long-term and repeated use of lubricating grease. The stepped folded rubber cover can expand the grease storage space in the limit chamber, reduce the amount of lubricating oil loss, prevent serious jerking during the opening of the door, and reduce abnormal resistance when closing. The folded rubber cover elastically squeezes the grease to the outside of the main arm through the oil outlet, which not only prevents the door from killing the user when it is opened, but also makes it easier for the user to open and close the door.

[0017] The lubricating grease is concentrated in the mounting groove and the sliding part of the stop. The corrugated rubber cover can block the lubricating oil inside the mounting groove and the stop. Therefore, the corrugated rubber cover and the folding rubber cover can be installed at the main boom's moving part. They can store lubricating oil and also block the movement, which is conducive to the main boom's movement through the door and reduces the force required by the user. The lubricating oil inside the corrugated rubber cover and the folding rubber cover can prevent wear after repeated use. When the door is protected from the door opening stop, the door can be closed with light force, reducing vibration noise when closing the door, enhancing the door's closing effect, reducing the amount of dust and rainwater entering, and also preventing the door from opening. It can also improve the door's sound insulation, dustproof and waterproof performance. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the oil injection assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the lubrication component of this utility model.

[0021] In the diagram: 1. Limiter box; 2. Mounting hole; 3. Grease injection hole; 4. Main arm; 5. Stop block; 6. Rotary shaft; 7. Limit chamber; 8. Mounting seat; 9. Rotary pin; 10. Folding rubber cover; 11. Oil outlet; 12. Limiting rubber; 13. Corrugated rubber cover; 14. Mounting groove. Detailed Implementation

[0022] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0023] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0024] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0025] Please see Figures 1-3 A two-stage door opening device for preventing door-opening kills is proposed, comprising a limiter box 1, a main arm 4, a stop block 5, and an installation assembly.

[0026] The main boom 4 is installed on the movable part of the limiter box 1. The main boom 4 is equipped with a stop block 5 at the mounting part. The limiter box 1 and the main boom 4 are installed on the movable part of the mounting assembly. The oil injection assembly is installed on the main boom 4. The lubrication assembly is set on the main boom 4.

[0027] The main arm 4 is movably mounted on the limiter box 1. The main arm 4 can slide through the inside of the limiter box 1. The other end of the main arm 4 is movably mounted on the door through the stop block 5. By pushing and pulling the main arm 4, the maximum opening of the door is limited, ensuring that the door will not open too wide and collide with the car body or other objects, thus preventing the door from opening.

[0028] Among them, the threaded fixing part of the limiter box 1 is provided with a mounting hole 2, the movable part of the main arm 4 is provided with a limit chamber 7, the oil filling part of the limit chamber 7 is provided with a grease injection hole 3, the rotating part of the stop block 5 is provided with a rotating shaft 6, the rotating part of the main arm 4 is provided with a rotating pin 9, and the mounting part of the rotating pin 9 is provided with a mounting seat 8.

[0029] In this embodiment, the main arm 4 is movably mounted on the mounting base 8 via the pivot pin 9. During the pushing and pulling of the car door, the main arm 4 opens and closes on the mounting base 8 via the pivot pin 9. The different height structures on the main arm 4 generate different resistances as the limiter box 1 moves during the opening and closing of the car door. At each limit position point, the car door can be limited, requiring different forces to open and close the door. The user can inject grease into the limit chamber 7 through the grease injection hole 3. The limit chamber 7 is lubricated by the grease, which helps the main arm 4 maintain the opening and closing lubrication effect.

[0030] Preferably, the main arm 4 moves through the limiter box 1 and the limit chamber 7. The pivot pin 9 is movably installed on the main arm 4 and the mounting base 8. After grease is injected into the limit chamber 7 through the grease injection hole 3, the main arm 4 can slide inside the limit chamber 7 and the limiter box 1 to prevent the door from opening and closing. The main arm 4 moves to open the door through the pivot pin 9 on the mounting base 8.

[0031] Preferably, the grease injection hole 3 is connected to the limit chamber 7 and installed on the limiter box 1. The limiter box 1 and the limit chamber 7 are connected and fixed together. The user can inject grease into the limit chamber 7 through the grease injection hole 3 and apply the grease to the main arm 4 and the limiter box 1 through the limit chamber 7.

[0032] Please refer to Figure 1 and Figure 2 In this embodiment, the oil injection assembly includes a folded rubber cover 10 fixedly connected to the limiting chamber 7, and an oil outlet 11 is provided inside the folded rubber cover 10.

[0033] The folded rubber cover 10 is fixedly connected to the limiting chamber 7, so that the oil outlet 11 is distributed inside the folded rubber cover 10. When the grease is injected into the limiting chamber 7 through the grease injection hole 3, the grease enters the folded rubber cover 10 through the limiting chamber 7.

[0034] Preferably, three folding rubber covers 10 are provided, which are fixedly connected to the limiting chamber 7 in a stepped manner. When grease enters the interior of the folding rubber covers 10 through the limiting chamber 7, the main arm 4 has structures of different heights. As the limiter box 1 moves, the stepped folding rubber covers 10 will produce different degrees of elastic deformation. The lubricating grease liquid inside the folding rubber covers 10 is squeezed to the outside of the oil outlet 11 through different degrees of elastic deformation. The lubricating grease can be applied to the limiter box 1 and the main arm 4. The two-stage door opening device on the limiter box 1 and the main arm 4 is conducive to long-term and repeated use of lubricating grease. The stepped folding rubber covers 10 can expand the grease storage space of the limiting chamber 7, reduce the amount of lubricating oil loss, prevent serious jerking during the opening of the door, and reduce abnormal resistance when closing. The folding rubber covers 10 elastically squeeze the grease to the outside of the main arm 4 through the oil outlet 11, which not only prevents the door from killing the user when it is opened, but also makes it easier for the user to open and close the door.

[0035] Please refer to Figure 1 and Figure 3 In this embodiment, the lubrication assembly includes a corrugated rubber cover 13 movably mounted on the main boom 4, and a mounting groove 14 is provided inside the stop block 5.

[0036] The corrugated rubber cover 13 is fixedly connected to the main arm 4. The other end of the main arm 4 is installed on the door through the stop 5 and the pivot 6. The main arm 4 is installed on the pivot 6 through the mounting groove 14. The user then adds lubricating grease to the corrugated rubber cover 13, the mounting groove 14 and the stop 5.

[0037] Preferably, the corrugated rubber cover 13 is connected and installed on the mounting groove 14. The mounting groove 14 can movably install the main arm 4. The main arm 4 is movably installed inside the corrugated rubber cover 13 and passes through the mounting groove 14 and the stop block 5. The lubricating grease is concentrated at the sliding point of the mounting groove 14 and the stop block 5. The corrugated rubber cover 13 can block the lubricating oil inside the mounting groove 14 and the stop block 5. Therefore, the corrugated rubber cover 13 and the folding rubber cover 10 can be installed at the moving part of the main arm 4. They can store lubricating oil and also block the movement, which is conducive to the main arm 4 being pushed by the door, reducing the force required by the user. The lubricating oil inside the corrugated rubber cover 13 and the folding rubber cover 10 can prevent wear after repeated use. When the door is locked, the door can be closed with light force, reducing vibration noise when closing the door, enhancing the closing effect of the door, reducing the amount of dust and rainwater entering, and also preventing the door from locking. This can improve the sound insulation, dustproof and waterproof performance of the door.

[0038] As can be seen from the above, during use, the main arm 4 opens and closes on the mounting seat 8 via the pivot pin 9 during the pushing and pulling of the car door. The different height structures on the main arm 4 generate different resistances as the limiter box 1 moves during the opening and closing of the car door. At each limit position, it can limit the car door. The main arm 4 is movably installed inside the corrugated rubber cover 13 and passes through the mounting groove 14 and the stop block 5. The lubricating grease is concentrated at the sliding part of the mounting groove 14 and the stop block 5. The corrugated rubber cover 13 can block the lubricating oil inside the mounting groove 14 and the stop block 5. Therefore, the corrugated rubber cover 13 and the folding rubber cover 10 can be installed at the moving part of the main arm 4, which can both store lubricating oil and play a blocking role.

[0039] The main arm 4 has structures of varying heights. As the limiter box 1 moves, the stepped folded rubber cover 10 will produce different degrees of elastic deformation. The lubricating grease inside the folded rubber cover 10 is squeezed to the outside of the oil outlet 11 through different degrees of elastic deformation. The lubricating grease can be applied to the limiter box 1 and the main arm 4. The two-stage door opening device on the limiter box 1 and the main arm 4, which facilitates lubrication of grease, can be used for a long time and multiple times.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-stage door opening device for preventing door-opening kills, comprising a limiter box (1), a main arm (4), a stop (5), and an installation assembly, wherein the main arm (4) is mounted on a movable part of the limiter box (1), the stop (5) is provided at a mounting point on the main arm (4), and the limiter box (1) and the main arm (4) are provided at a movable part of the installation assembly, characterized in that: It also includes settings, The oil injection assembly is installed on the main arm (4); A lubrication assembly is provided on the main arm (4); The limiter box (1) has a mounting hole (2) at the threaded fixing point, the main arm (4) has a limit chamber (7) at the movable part, the limit chamber (7) has a grease injection hole (3) at the oil filling point, the stop block (5) has a rotating shaft (6) at the rotating part, the main arm (4) has a pivot pin (9) at the rotating part, and the pivot pin (9) has a mounting seat (8) at the mounting point.

2. The two-stage door opening device for preventing door-opening kill as described in claim 1, characterized in that, The main arm (4) moves through the limiter box (1) and the limit chamber (7), and the pivot pin (9) is movably mounted on the main arm (4) and the mounting base (8).

3. A two-stage door opening device for preventing door-opening kills according to claim 1, characterized in that, The butter injection hole (3) is connected to the limiting chamber (7) and installed on the limiting box (1).

4. A two-stage door opening device for preventing door-opening kills according to claim 1, characterized in that, The oil injection assembly includes a folded rubber cover (10) fixedly connected to the limiting chamber (7), and the folded rubber cover (10) has an oil outlet hole (11) inside.

5. A two-stage door opening device for preventing door-opening kills according to claim 4, characterized in that, Three folding rubber covers (10) are provided and are fixedly connected to the limiting chamber (7) in a stepped manner.

6. A two-stage door opening device for preventing door-opening kills according to claim 1, characterized in that, The lubrication assembly includes a corrugated rubber cover (13) movably mounted on the main boom (4), and the stop block (5) has an installation groove (14) inside.

7. A two-stage door opening device for preventing door-opening kills according to claim 6, characterized in that, The corrugated rubber cover (13) is connected and installed on the mounting groove (14), and the main arm (4) can be movably installed in the mounting groove (14).