Novel engineering machinery cab door sealing rubber strip structure
By designing the new sealant strip structure, the problems of easy shedding of the sealant strip and small contact area are solved, and higher sealing performance and stability are achieved, ensuring a clean and quiet environment of the cab.
Patent Information
- Application Number
- CN202423061420.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The existing engineering machinery cab door sealing strips are prone to fall off or deform after long-term use, the sealing performance is degraded, and the contact area is small, which cannot effectively prevent noise, water, dust and pollutants from entering.
A sealing strip structure including a first contact surface, a second contact surface and a hoist-shaped contact surface is adopted. The first contact surface and the second contact surface are bonded to the vehicle door, the hoist-shaped contact surface is connected to the door frame, which increases the sealing contact area, and a cavity and flange are provided inside the contact surface to enhance connection stability and sealing effect.
Enhance the airtightness and stability of the cab, improve sealing performance, ensure clean and quiet inside the cab, and reduce the risk of loosening or damage caused by vibration or impact.
Smart Images
Figure CN223148181U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling for construction machinery, in particular to a novel sealing strip structure for the cab door of construction machinery. Background Art
[0002] The door sealing strip is one of the important components of the cab of construction machinery. Its main function is to fill the gaps between the body sheet metals, and at the same time has multiple functions such as shock absorption, waterproofing, dustproofing and sound insulation. It can block wind and rain outside and suppress noise inside, thus providing a comfortable and safe working environment for the operator. Since the cabs of construction machinery are mostly used in areas with harsh working environments, designing and improving the cab to meet the ergonomic standards can significantly improve the comfort of the operator and reduce the man-made damage to the machinery. Therefore, it is particularly important to improve the sealing performance of the door sealing strip.
[0003] Although the door sealing strips in the prior art have improved the sealing performance to a certain extent, there are still some deficiencies. For example, the traditional round foam strip may fall off or deform after long-term use, resulting in a decline in the sealing performance. In addition, the contact area of the round foam strip is relatively small, and it cannot effectively prevent noise, water, dust and pollutants from entering the cab interior. These problems not only affect the comfort and safety of the cab, but may also cause damage to the mechanical equipment. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a novel sealing strip structure for the cab door of construction machinery to solve the problems put forward in the above background art.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A novel sealing strip structure for the cab door of construction machinery, including a sealing strip body. The sealing strip body includes a first contact surface, a second contact surface and a gourd-shaped contact surface. The first contact surface and the second contact surface are respectively bonded to the inner circumference of the door. There is an arc transition between the first contact surface and the second contact surface. The gourd-shaped contact surface is connected to the door frame. A fitting strip is provided at the top of the gourd-shaped contact surface. Symmetric arc-shaped flanges I and arc-shaped flanges II are provided at the gourd part of the gourd-shaped contact surface. The diameter of the arc-shaped flange I is larger than that of the arc-shaped flange II. A fan-shaped cavity is provided inside the gourd-shaped contact surface.
[0007] Preferably, a trapezoidal cavity is provided inside the first contact surface.
[0008] Preferably, chamfering is performed at the four corners of the trapezoidal cavity.
[0009] Preferably, a parallelogram cavity is provided inside the second contact surface.
[0010] Preferably, chamfers are made at the four corners of the parallelogram cavity.
[0011] Preferably, a deformation groove is provided between the second arc-shaped flange and the second contact surface.
[0012] The utility model has the following beneficial effects compared with the prior art:
[0013] 1. Enhance airtightness and stability: By adopting this kind of sealing strip structure, the connection between the car door and the door frame can be made more tight, thus significantly enhancing the airtightness of the cab. This tight connection not only improves the sealing performance, but also makes the door structure more stable, reducing the risk of loosening or damage caused by vibration or impact.
[0014] 2. Improve assembly reliability: The first contact surface and the second contact surface are pasted on the inner side of the car door with 3M glue, and the other side close to the door frame is a gourd-shaped foam strip. This design ensures the sealing performance of the cab door while improving the assembly reliability. 3M glue has excellent bonding strength and durability, ensuring that the sealing strip will not fall off or deform easily during long-term use. The gourd-shaped strip design increases the sealing contact area, making the sealing surface larger and with three-layer contact, which can more effectively prevent noise, water, dust and pollutants from entering the cab interior, further enhancing the sealing effect and ensuring the cleanliness and quietness of the internal environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of the sealing strip body of the utility model;
[0016] Figure 2 is a schematic connection diagram of the sealing strip body of the utility model with the car door and the door frame;
[0017] As shown in the figure: 1. Car door; 2. Door frame; 3. Sealing strip body; 31. First contact surface; 311. Trapezoidal cavity; 32. Second contact surface; 321. Parallelogram cavity; 322. Adhesive strip; 33. Gourd-shaped contact surface; 331. Fitting strip; 332. First arc-shaped flange; 333. Second arc-shaped flange; 334. Sector cavity; 335. Deformation groove. DETAILED DESCRIPTION OF THE INVENTION
[0018] In order to further elaborate on the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the following combines the drawings and preferred embodiments to detail the specific implementation manners, structures, features and their effects of the utility model as follows.
[0019] As Figure 1-2A novel sealing strip structure for the cab door of construction machinery is shown, including a vehicle door 1, a door frame 2, and a sealing strip body 3. The sealing strip body 3 is located between the vehicle door 1 and the door frame 2. The sealing strip body 3 includes a first contact surface 31, a second contact surface 32, and a gourd-shaped contact surface 33. The first contact surface 31 is adhesively bonded to the lower end surface of the inverted L-shaped upper end of the vehicle door 1 by 3M glue. A trapezoidal cavity 311 is provided inside the first contact surface 31. Chamfers are made at the four corners of the trapezoidal cavity 311. The chamfer radii of the opposite corners of the trapezoidal cavity 311 are equal, and the radius of chamfer a is greater than the radius of chamfer b.
[0020] The second contact surface 32 is adhesively bonded to the left end surface of the inverted L-shaped lower end of the vehicle door 1 by 3M glue. A parallelogram cavity 321 is provided inside the second contact surface 32. Chamfers are made at the four corners of the parallelogram cavity 321, and the chamfer radii of the four corners are the same. An arc transition is provided between the first contact surface 31 and the second contact surface 32.
[0021] The gourd-shaped contact surface 33 is connected to the door frame 2. A fitting strip 331 is provided at the top of the gourd-shaped contact surface 33. Symmetric arc-shaped flanges 332 and 333 are provided at the gourd body of the gourd-shaped contact surface 33. The diameter of the arc-shaped flange 332 is greater than the diameter of the arc-shaped flange 333. A fan-shaped cavity 334 is provided inside the gourd-shaped contact surface 33. Chamfers are made at the corner c formed by the straight side and the arc side of the upper straight edge of the fan-shaped cavity 334 and the corner d formed by the lower straight edge and the arc side. The chamfer radius of the corner c is greater than the chamfer radius of the corner d.
[0022] A pasting strip 322 extends from the lower end of the second contact surface 32. A deformation groove 335 is provided between the arc-shaped flange 333 and the pasting strip 322.
[0023] Working principle: During use, the first contact surface and the second contact surface of the sealing strip body are adhesively bonded to the vehicle door, and the gourd-shaped contact surface is connected to the door frame, increasing the sealing contact area, making the sealing surface larger and with three-layer contact, which can more effectively prevent noise, water, dust, and pollutants from entering the cab interior, enhancing the sealing effect and ensuring the cleanliness and quietness of the internal environment.
[0024] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments of equivalent changes by using the above-disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A sealing strip structure for the cab door of a new type of construction machinery, characterized in that, It includes a sealing strip body, and the sealing strip body includes a first contact surface, a second contact surface, and a gourd-shaped contact surface. The first contact surface and the second contact surface are respectively adhesively bonded to the inner circumference of the car door. There is an arc transition between the first contact surface and the second contact surface. The gourd-shaped contact surface is connected to the door frame. A fitting strip is provided at the top of the gourd-shaped contact surface. Symmetrical arc-shaped flanges I and arc-shaped flanges II are provided at the gourd body part of the gourd-shaped contact surface. The diameter of the arc-shaped flange I is larger than that of the arc-shaped flange II. A sector cavity is provided inside the gourd-shaped contact surface.
2. The structure of a sealing strip for the cab door of a new type of construction machinery according to claim 1, characterized in that, A trapezoidal cavity is provided inside the first contact surface.
3. A novel cab door sealing strip structure of construction machinery according to claim 2, characterized in that, Chamfering treatment is performed on the four corners of the trapezoidal cavity.
4. A novel cab door sealing strip structure for construction machinery according to claim 1, characterized in that, A parallelogram cavity is provided inside the second contact surface.
5. A novel cab door sealing strip structure for construction machinery according to claim 4, characterized in that, Chamfering treatment is performed on the four corners of the parallelogram cavity.
6. The structure of a sealing strip for the cab door of a new type of construction machinery according to claim 1, characterized in that, A deformation groove is provided between the arc-shaped flange II and the second contact surface.