Skylight lock limiting structure of engineering machinery cab

Abstract

The utility model relates to an engineering machinery cab skylight lock limit structure, which adopts the following technical scheme that the engineering machinery cab skylight lock limit structure comprises a skylight, a skylight lock, an air cylinder and a top cover, two ends of the skylight lock are respectively fixed on the skylight and the top cover, the skylight lock comprises a fixed seat, a left connecting rod, a right connecting rod, a ball body and a sliding block, the fixing base is movably connected with a left connecting rod, the left connecting rod is movably connected with a right connecting rod, the right connecting rod is fixedly connected with a ball, the ball is slidably connected with a sliding block, the sliding block is fixed to the top cover, and the two ends of the air cylinder are fixed to the skylight and the top cover respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies of engineering machinery, in particular to a locking and limiting structure for a skylight in an engineering machinery cab. Background Art

[0002] As a key component of the cab of construction machinery, the function and performance of the skylight are attracting increasing attention from users. With increasing ergonomic requirements, skylight design has become a key indicator of the overall cab quality. However, in traditional designs, the skylight opening angle is difficult to precisely control, causing inconvenience to the user. Prolonged cab closures can lead to the accumulation of harmful substances, affecting air quality and human health. Fully opening the skylight in the summer increases ventilation but exposes the driver to strong sunlight, while in the winter, the temperature inside the vehicle drops rapidly, causing discomfort and even harming the operator's health. Therefore, optimizing skylight design to balance ventilation, comfort, and safety has become an urgent issue. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a locking and limiting structure for the sunroof in the cab of engineering machinery. The problem that the sunroof can only be opened at a small angle is solved by optimizing the design to achieve the purpose of air circulation in the vehicle.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sunroof lock limiting structure for a cab of engineering machinery includes a sunroof, a sunroof lock, a cylinder, and a top cover. The two ends of the sunroof lock are respectively fixed to the sunroof and the top cover. The sunroof lock includes a fixed seat, a left connecting rod, a right connecting rod, a sphere, and a sliding block. The fixed seat is fixed to the sunroof. The fixed seat is movably connected to the left connecting rod. The left connecting rod is movably connected to the right connecting rod. The right connecting rod is fixed to the sphere. The sphere is slidably connected to the sliding block. The sliding block is fixed to the top cover. The two ends of the cylinder are respectively fixed to the sunroof and the top cover.

[0006] Preferably, the fixing seat is fixed to the skylight via a fixing seat bracket, and the fixing seat bracket is U-shaped.

[0007] Preferably, the fixing seat is connected to the left connecting rod via an axle pin.

[0008] Preferably, the left connecting rod and the right connecting rod are connected by an axle pin.

[0009] Preferably, an arc-shaped groove is provided on one side of the sphere, and an arc-shaped protrusion is provided on one side of the sliding block, and the arc-shaped protrusion slides along the arc-shaped groove.

[0010] Preferably, the cross sections of the arc-shaped groove and the arc-shaped protrusion are both T-shaped.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Automatic convenience: Through the automatic control of the cylinder, users can easily open and close the sunroof without manual operation, which brings great convenience to users;

[0013] Precise Control: The preset small-angle opening function allows users to adjust the sunroof opening as needed, whether it is for ventilation or full opening, the desired position can be achieved quickly and accurately.

[0014] Enhanced safety: When the sunroof reaches the preset small opening angle, the cylinder automatically stops working to prevent safety issues such as pinching or damage to the sunroof caused by over-opening;

[0015] Easy maintenance: If the sunroof needs to be cleaned or repaired more thoroughly, the user can simply remove the left link or separate the left and right links to fully open the sunroof, which makes daily maintenance easier.

[0016] Structural stability: The design of the fixing base and connecting rod can maintain the stability of the skylight even during the opening process, avoiding accidental movement caused by wind or other external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the skylight of the present invention in the open and closed states;

[0019] Figure 3 A schematic diagram of a sphere of the present invention;

[0020] Figure 4 This is a schematic diagram of the sliding block of the present utility model;

[0021] As shown in the figure: 1. Sunroof; 2. Top cover; 31. Fixed seat; 32. Left connecting rod; 33. Right connecting rod; 34. Sphere; 341. Arc groove; 35. Sliding block; 351. Arc protrusion; 4. Cylinder; 5. Sunroof lock bracket; 6. Sliding block bracket. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0023] A sunroof lock and limit structure for a cab of engineering machinery includes a sunroof 1, a sunroof lock, a cylinder 4, and a top cover 2. The sunroof lock has two ends fixed to the sunroof 1 and top cover 2, respectively. The sunroof lock includes a fixing seat 31, a left connecting rod 32, a right connecting rod 33, a ball 34, and a sliding block 35. The base of the fixing seat 31 is fixed to a fixing seat bracket 5. The fixing seat bracket 5 is U-shaped, and the bottom of the U-shaped side wall of the fixing seat bracket 5 is fixed to the sunroof 1. The lower end of the fixing seat 31 is connected to the left end of the left connecting rod 32 via an axle pin. When the axle pin is inserted, the sunroof opening angle can be limited to achieve a small angle opening; when the axle pin is removed, the sunroof can be opened to the maximum angle. The right end of the left connecting rod 32 is connected to the left end of the right connecting rod 33 via an axle pin. The right end of the right connecting rod 33 is fixedly connected to the left side of the sphere 34. The right side of the sphere 34 is provided with an arc-shaped groove 341, and the cross-section of the arc-shaped groove 341 is T-shaped. The left side of the sliding block 35 is provided with an arc-shaped protrusion 351, and the cross-section of the arc-shaped protrusion 351 is T-shaped. The arc-shaped protrusion 351 slides along the arc-shaped groove 341 to realize the sliding connection between the sphere 34 and the sliding block 35. The sliding block 35 is fixed to the top cover 2 through the sliding block bracket 6. The two ends of the cylinder 4 are respectively fixed to the skylight 1 and the top cover 2, and are used to control the opening of the skylight 1.

[0024] Working principle:

[0025] When you activate the sunroof, a cylinder slowly raises it. This movement causes the sunroof's mounting bracket to move upward, shifting the left and right connecting rods. This allows the ball to slide smoothly along its pre-set grooves. Once the sunroof reaches the pre-set, slightly open position, the cylinder automatically stops, ensuring the sunroof remains in this position. If you wish to fully open the sunroof, simply remove the left connecting rod from its mounting bracket or detach the left and right connecting rods.

[0026] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A locking and limiting structure for a skylight in an engineering machinery cab, characterized in that: It includes a sunroof, a sunroof lock, a cylinder, and a top cover. The two ends of the sunroof lock are respectively fixed on the sunroof and the top cover. The sunroof lock includes a fixed seat, a left connecting rod, a right connecting rod, a sphere, and a sliding block. The fixed seat is fixed on the sunroof. The fixed seat is movably connected to the left connecting rod. The left connecting rod is movably connected to the right connecting rod. The right connecting rod is fixed to the sphere. The sphere is slidably connected to the sliding block. The sliding block is fixed on the top cover. The two ends of the cylinder are respectively fixed on the sunroof and the top cover.

2. The locking and limiting structure of the skylight in the cab of an engineering machinery according to claim 1, characterized in that: The fixing seat is fixed on the skylight through a fixing seat bracket, and the fixing seat bracket is U-shaped.

3. The locking and limiting structure of the skylight in the cab of an engineering machinery according to claim 1, characterized in that: The fixing seat is connected to the left connecting rod through an axle pin.

4. The locking and limiting structure of the skylight in the cab of an engineering machinery according to claim 1, characterized in that: The left connecting rod and the right connecting rod are connected through an axle pin.

5. The locking and limiting structure of the skylight in the cab of an engineering machinery according to claim 1, characterized in that: An arc-shaped groove is provided on one side of the sphere, and an arc-shaped protrusion is provided on one side of the sliding block. The arc-shaped protrusion slides along the arc-shaped groove.

6. The locking and limiting structure of the skylight in the cab of an engineering machinery according to claim 5, characterized in that: The cross sections of the arc-shaped groove and the arc-shaped protrusion are both T-shaped.

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