Cab ventilation hood assembly

Abstract

The utility model provides a cab ventilation hood assembly, relates to the field of ventilation hoods, and adopts the technical scheme that the cab ventilation hood assembly comprises a rear hood cover and a shell, a grid is arranged on the rear hood cover, the grid is transversely arranged, the shell comprises a ventilation cavity, an opening of the ventilation cavity faces the grid, a ventilation opening is formed in the front portion of the ventilation cavity, and the ventilation opening is communicated with the ventilation cavity. The bottom of the ventilation cavity is obliquely arranged towards the lower portion of the grating, the shell further comprises a connecting part, the connecting part surrounds the opening of the ventilation cavity and is connected with the rear cover, and a drainage notch is formed in the lower portion of the connecting part. Rainwater entering the ventilation hood can be completely drained, water accumulation is avoided, and the waterproof performance of the ventilation hood is improved.

Description

Technical Field

[0001] The utility model relates to the field of ventilation hoods, in particular to a cab ventilation hood assembly. Background Art

[0002] As an exhaust device, the commercial vehicle ventilator is installed on the cab. It can exhaust the cab and reduce the resistance of closing the door at the moment of closing the door. In order to prevent water from entering the cab, the ventilator must have both exhaust and waterproof functions.

[0003] In the prior art, a Chinese utility model patent with authorization announcement number CN207311046U discloses a ventilator, wherein a guide vane is arranged between every two adjacent partitions, a drainage step is fixedly arranged at the inner bottom of the side cover, the grille blade is in the shape of a strip plate and is arranged horizontally, a plurality of grille blades are arranged in sequence with equal intervals from top to bottom, the grille blades are arranged in an inclined manner and the top of the grille blade is adjacent to one side of the guide vane, and the height of the bottom of each grille blade is not higher than the height of the top of the adjacent grille blade below; when rain falls on the ventilation grille When the drain step is set, most of the rainwater will flow downward along the inclined grille blades under the action of gravity and finally be discharged out of the cab. A small amount of rainwater will flow into the ventilator from the gap between two adjacent grille blades due to the action of wind. Since the guide vane is set at an angle, the rainwater will slide downward in sequence due to gravity and finally accumulate at the junction of the drainage step and the side cover. The drainage step can prevent the accumulated water from entering the cab. When the accumulated water reaches a certain amount, it will be discharged from the gap between the inner bottom of the side cover and the lowest grille blade.

[0004] The above technical solution can prevent rainwater from entering the cab to a certain extent. However, when rainwater enters the ventilator, it accumulates at the drainage step. Only when the accumulated water reaches a certain height can it flow out from the gap between the inner bottom of the side cover and the lowest grille blade. It can be seen that immediate drainage cannot be achieved, and the accumulated water cannot be completely discharged, resulting in a certain degree of water accumulation. Utility Model Content

[0005] In order to solve the technical problem in the above-mentioned prior art that the cab ventilation hood cannot completely discharge the accumulated water, the utility model provides a cab ventilation hood assembly, which can completely discharge the rainwater entering the ventilation hood, avoid water accumulation, and improve the waterproof performance of the ventilation hood.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a cab ventilation hood assembly, including a rear cover and a shell, the rear cover is provided with a grille, the grille is arranged horizontally, the shell includes a ventilation cavity, the opening of the ventilation cavity faces the grille, the front of the ventilation cavity is provided with a vent, the bottom of the ventilation cavity is inclined below the grille, the shell also includes a connecting part, the connecting part surrounds the opening of the ventilation cavity, the connecting part is connected to the rear cover, and the lower part of the connecting part is provided with a drainage gap. By setting the bottom of the ventilation cavity inclined below the grille, rainwater entering the cavity can be discharged to the outside under the action of its own gravity, and finally quickly flows out from the drainage gap through the gap between the rear cover and the lower part of the connecting part, avoiding the formation of water accumulation in the ventilation cavity, and improving the waterproof performance of the ventilation hood.

[0007] Furthermore, a windshield is provided in the ventilation cavity and at the rear of the vent, the windshield is made of rubber material, and the lower end of the windshield can abut against the front of the ventilation cavity. The windshield is provided to prevent the wind outside the cab from entering the cab, thereby achieving wind protection.

[0008] Furthermore, the lower end of the wind shield is inclined toward the grille. By arranging the wind shield at an angle, the wind shield can fall back under the action of gravity and ensure contact with the front of the ventilation cavity, thereby improving the wind shielding effect.

[0009] Furthermore, the windshield is a multi-segment structure, and the windshield includes at least two sub-pieces, and the plurality of sub-pieces are arranged along the length direction of the grille. By arranging the windshield in sections, it is easy to swing under the action of wind to achieve conduction, which is convenient for exhausting air inside the cab.

[0010] Furthermore, a fixing plate is vertically arranged on the rear side of the rear cover, a pin is horizontally arranged on the front of the fixing plate, and a mounting hole is arranged on the upper part of the windshield and the upper part of the vent on the ventilation cavity, and the pin can be inserted into the mounting hole. Fixing the windshield by the pin facilitates installation and improves assembly efficiency.

[0011] Furthermore, the edge of the rear cover is provided with a flange 1, the flange 1 extends forward, a slot is provided on the flange 1, the edge of the connection portion is provided with a flange 2, the flange 2 extends forward, the flange 2 is fitted with the inner surface of the flange 1, the flange 2 is provided with a connecting buckle, the connecting buckle is engaged with the slot, and a gap is also provided on the flange 2 at a position corresponding to the drainage gap. By providing flange 1 and flange 2, the sealing performance of the connection between the rear cover and the shell can be improved, water can be prevented from entering from the gap between the two, the sealing performance of the ventilation hood assembly can be improved, and the connection strength can be ensured by the snap connection.

[0012] Furthermore, the vent is provided with a reinforcement frame, and the reinforcement frame includes a plurality of support rods. The strength of the vent is supported by providing the reinforcement frame.

[0013] Furthermore, the lower part of the reinforcement frame is inclined toward the grille, and the reinforcement frame is arranged parallel to the wind shield. The inclined arrangement of the reinforcement frame can provide support for the wind shield.

[0014] Furthermore, the grille adopts a shutter structure.

[0015] Furthermore, a mounting buckle is provided on the outer surface of the ventilation cavity, the mounting buckle is connected to the cab, and a sealing ring is provided on the front surface of the connection portion near the flange, and the sealing ring is made of waterproof foam material. By providing the mounting buckle and the sealing ring, water ingress from the gap between the cab and the ventilation hood assembly can be greatly reduced, further improving the waterproofness of the ventilation hood assembly.

[0016] It can be seen from the above technical solutions that the utility model has the following advantages:

[0017] The utility model provides a cab ventilation hood assembly, which is inclined by the bottom of the ventilation cavity toward the bottom of the grille, so that rainwater entering the cavity can be discharged to the outside under the action of its own gravity, and finally flows out quickly from the drainage gap through the gap between the rear cover and the lower part of the connection part, so as to avoid the formation of water accumulation in the ventilation cavity and improve the waterproof performance of the ventilation hood; by arranging a windshield sheet, the wind outside the cab can be prevented from entering the cab, so as to achieve wind blocking; by arranging flange one and flange two, the sealing performance of the connection between the rear cover and the shell can be improved, so as to avoid water entering from the gap between the two, and the sealing performance of the ventilation hood assembly can be improved, and the connection strength can be ensured by a snap connection; by arranging a reinforcement frame to support the strength of the ventilation opening; by arranging the reinforcement frame in an inclined manner, support can be provided for the windshield sheet; by arranging installation buckles and sealing rings, the water entering from the gap between the cab and the ventilation hood assembly can be greatly reduced, so as to further improve the waterproof performance of the ventilation hood assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The structure of the specific implementation method of the utility model is shown in FIG. Figure 1 .

[0020] Figure 2 The structure of the specific implementation method of the utility model is shown in FIG. Figure 2 .

[0021] Figure 3 It is an exploded view of a specific implementation method of the utility model.

[0022] Figure 4 It is a cross-sectional view of a specific implementation method of the utility model.

[0023] Figure 5 It is a schematic structural diagram of a windshield in a specific implementation manner of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the shell in a specific implementation manner of the utility model.

[0025] In the figure, 1, rear cover; 101, flange 1; 102, slot; 103, fixing plate; 104, pin shaft; 105, grille; 2, wind shield; 201, sub-piece; 202, mounting hole; 3, shell; 301, ventilation cavity; 302, flange 2; 303, connecting part; 304, drainage notch; 305, mounting buckle; 306, reinforcement frame; 307, connecting buckle; 4, sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0027] like Figures 1 to 3 As shown, this specific embodiment provides a cab ventilation hood assembly, including a rear cover 1 and a shell 3, the rear cover 1 is provided with a grille 105, the grille 105 is arranged horizontally, the grille 105 adopts a shutter structure, the shell 3 includes a ventilation cavity 301, the opening of the ventilation cavity 301 faces the grille 105, a vent is arranged at the front of the ventilation cavity 301, the bottom of the ventilation cavity 301 is inclined downwardly of the grille 105, and in this specific embodiment, the inclination angle of the bottom of the ventilation cavity 301 is 5°, the shell 3 also includes a connecting portion 303, the connecting portion 303 surrounds the opening of the ventilation cavity 301, the connecting portion 303 is connected to the rear cover 1, and the lower portion of the connecting portion 303 is provided with a drainage gap 304. By tilting the bottom of the ventilation cavity 301 downward toward the grille 105, rainwater entering the cavity can be discharged to the outside under the action of its own gravity, and finally quickly flows out from the drainage notch 304 through the gap between the rear cover 1 and the lower part of the connecting part 303, thereby avoiding the formation of water accumulation in the ventilation cavity 301 and improving the waterproof performance of the ventilation hood.

[0028] like Figures 3 to 5 As shown, in order to reduce the amount of wind outside the cab entering the cab through the ventilation hood assembly, in the present specific embodiment, a windshield 2 is provided in the ventilation cavity 301 and at the rear of the vent. The windshield 2 is made of rubber material, specifically, the windshield 2 is made of EPDM material, which is light and thin, and the lower end of the windshield 2 can abut against the front of the ventilation cavity 301; the lower end of the windshield 2 is inclined toward the grille 105, and by arranging the windshield 2 at an angle, the windshield 2 can fall back under the action of gravity and ensure abutment with the front of the ventilation cavity 301, thereby enhancing the windshield effect. In the present specific embodiment, the angle between the windshield 2 and the vertical direction is 18°; the windshield 2 is a multi-section structure, and the windshield 2 includes at least two sub-pieces 201, and the plurality of sub-pieces 201 are arranged along the length direction of the grille 105. In the present specific embodiment, three sub-pieces 201 are provided, and by arranging the windshield 2 in sections, the windshield can be more easily swung under the action of wind force to achieve conduction, thereby facilitating exhaustion inside the cab.

[0029] like Figure 3 and Figure 4 As shown, in the prior art, the wind shield 2 is installed by gluing, which is not convenient for installation on the one hand, and on the other hand, it is not convenient for the wind shield 2 to be blown by the wind after being hinged. In the present specific embodiment, a fixing plate 103 is vertically arranged on the rear side of the rear cover 1, and a pin shaft 104 is horizontally arranged on the front of the fixing plate 103. A mounting hole 202 is arranged on the upper part of the wind shield 2 and on the upper part of the ventilation opening on the ventilation cavity 301, and the pin shaft 104 can extend into the mounting hole 202. The diameter of the mounting hole 202 on the upper part of the wind shield 2 is larger than the diameter of the pin shaft 104, and there is a certain gap between the mounting hole 202 and the pin shaft 104, so that the wind shield 2 is easy to flip over under the action of wind.

[0030] like Figure 3 and Figure 4 As shown, in order to ensure the sealing of the connection between the rear cover 1 and the shell 3, in this specific embodiment, a flange 101 is provided on the edge of the rear cover 1, and the flange 101 extends forward. A slot 102 is provided on the flange 101, and a flange 2 302 is provided on the edge of the connecting portion 303, and the flange 2 302 extends forward. The flange 2 302 is fitted with the inner surface of the flange 101, and a connecting buckle 307 is provided on the flange 2 302. The connecting buckle 307 is snap-fitted with the slot 102, and a gap is also provided on the flange 2 302 at a position corresponding to the drainage gap 304. By arranging the flange 101 and the flange 2 302, the sealing of the connection between the rear cover and the shell 3 can be improved, water can be prevented from entering from the gap between the two, the sealing of the ventilation hood assembly is improved, and the connection strength is ensured by snap connection.

[0031] like Figure 3 and Figure 6As shown, in order to increase the strength and reduce the influence of the vents on the strength of the hood assembly, in this specific embodiment, the vents are provided with a reinforcing frame 306, the reinforcing frame 306 includes a plurality of support rods, the lower portion of the reinforcing frame 306 is inclined toward the direction of the grille 105, the reinforcing frame 306 is arranged parallel to the wind shield 2, the wind shield 2 can be attached to the reinforcing frame 306, and the inclined setting of the reinforcing frame 306 can provide support for the wind shield 2.

[0032] like Figure 3 and Figure 4 As shown, in order to prevent water from entering the gap between the ventilation hood assembly and the rear enclosure of the cab, a mounting buckle 305 is arranged on the outer surface of the ventilation cavity 301, and the mounting buckle 305 is connected to the rear enclosure of the cab. A sealing ring 4 is arranged on the front surface of the connecting portion 303 and near the second flange 302, and the sealing ring 4 is made of waterproof foam material; when the mounting buckle 305 is clamped with the rear enclosure of the cab, the sealing ring 4 can be squeezed between the connecting portion 303 and the rear enclosure of the cab to achieve sealing, and the sealing ring 4 is made of waterproof material to prevent water absorption.

[0033] When the ventilation hood assembly is installed, the vent is located in the cab, the grille 105 is located outside the cab, and the rear cover 1 is made of high temperature and light resistant PP material to avoid aging damage due to long-term exposure.

[0034] In the description of this specific implementation manner, the direction in which the vehicle travels is taken as the front.

[0035] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0036] 1. The bottom of the ventilation cavity 301 is tilted downwardly toward the grille 105, so that rainwater entering the cavity can be discharged to the outside under its own gravity, and finally flows out quickly from the drainage notch 304 through the gap between the rear cover 1 and the lower part of the connecting part 303, thereby avoiding the formation of water accumulation in the ventilation cavity 301 and improving the waterproof performance of the ventilation hood;

[0037] 2. The windshield 2 is provided to prevent the wind outside the cab from entering the cab, thus achieving wind protection;

[0038] 3. By providing the flange 101 and the flange 2 302, the sealing performance of the connection between the rear cover and the housing 3 can be improved, water can be prevented from entering through the gap between the two, the sealing performance of the ventilation cover assembly can be improved, and the connection strength can be ensured by the snap connection;

[0039] 4. The strength of the vent is supported by providing a reinforcement frame 306;

[0040] 5. The reinforcement frame 306 is tilted to provide support for the windshield 2;

[0041] 6. By providing the mounting buckle 305 and the sealing ring 4, water ingress from the gap between the cab and the ventilation hood assembly can be greatly reduced, further improving the waterproofness of the ventilation hood assembly.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cab ventilation hood assembly, comprising a rear cover (1) and a housing (3), wherein a grille (105) is provided on the rear cover (1), characterized in that: The grille (105) is arranged horizontally, and the shell (3) includes a ventilation cavity (301), the opening of the ventilation cavity (301) faces the grille (105), a vent is arranged at the front of the ventilation cavity (301), and the bottom of the ventilation cavity (301) is arranged obliquely below the grille (105). The shell (3) also includes a connecting portion (303), the connecting portion (303) surrounds the opening of the ventilation cavity (301), the connecting portion (303) is connected to the rear cover (1), and a drainage notch (304) is arranged at the bottom of the connecting portion (303).

2. The cab ventilation hood assembly according to claim 1, characterized in that: A windshield (2) is arranged in the ventilation cavity (301) and at the rear of the ventilation opening. The windshield (2) is made of rubber material, and the lower end of the windshield (2) can abut against the front of the ventilation cavity (301).

3. The cab ventilation hood assembly according to claim 2, characterized in that: The lower end of the wind shield (2) is inclined toward the grille (105).

4. The cab ventilation hood assembly according to claim 2, characterized in that: The wind shield (2) is a multi-section structure, and the wind shield (2) comprises at least two sub-pieces (201), and the plurality of sub-pieces (201) are arranged along the length direction of the grille (105).

5. The cab ventilation hood assembly according to claim 4, characterized in that: A fixing plate (103) is vertically arranged on the rear side of the rear cover (1), a pin shaft (104) is horizontally arranged on the front of the fixing plate (103), and a mounting hole (202) is arranged on the upper part of the wind shield (2) and the upper part of the ventilation opening on the ventilation cavity (301), and the pin shaft (104) can extend into the mounting hole (202).

6. The cab ventilation hood assembly according to claim 4, characterized in that: The edge of the rear cover (1) is provided with a flange 1 (101), the flange 1 (101) extends forward, and a slot (102) is provided on the flange 1 (101); the edge of the connecting portion (303) is provided with a flange 2 (302), the flange 2 (302) extends forward, the flange 2 (302) is fitted with the inner surface of the flange 1 (101), the flange 2 (302) is provided with a connecting buckle (307), the connecting buckle (307) is snap-connected with the slot (102), and a notch is also provided on the flange 2 (302) at a position corresponding to the drainage notch (304).

7. The cab ventilation hood assembly according to any one of claims 3 to 6, characterized in that: The vent is provided with a reinforcement frame (306), and the reinforcement frame (306) includes a plurality of support rods.

8. The cab ventilation hood assembly according to claim 7, characterized in that: The lower part of the reinforcing frame (306) is inclined in the direction of the grille (105), and the reinforcing frame (306) is arranged in parallel with the wind shield (2).

9. The cab ventilation hood assembly according to claim 7, characterized in that: The grille (105) adopts a shutter structure.

10. The cab ventilation hood assembly according to claim 6, characterized in that: An installation buckle (305) is arranged on the outer surface of the ventilation cavity (301), and the installation buckle (305) is connected to the cab. A sealing ring (4) is arranged on the front surface of the connecting part (303) and near the second flange (302), and the sealing ring (4) is made of waterproof foam material.

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