A type of ventilation window for a dining car

Abstract

This utility model discloses a ventilation window for a dining car, including a housing. A mounting plate is provided on the front side of the housing, and a ventilation fan is installed inside the mounting plate. The mounting plate is hinged to the housing via a quick-release assembly. A flange plate is fixed to the outer surface of the housing. A window sash is hinged to the rear side of the housing. An electric push rod assembly for opening and closing the window sash is installed inside the housing. Two baffles are fixed inside the housing on the left and right sides. An inner window is fixed inside the window sash. By making the window sash electrically openable, in inclement weather, the housing can be isolated from the external space to prevent rain, snow, and strong winds from entering the housing and the dining car. In normal weather, the window sash can be opened to achieve normal ventilation.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation window sashes for food carts, specifically a ventilation window sash for food carts. Background Technology

[0002] Mobile food carts must balance heat dissipation during cooking with protection from wind and rain. Existing ventilation windows are mostly manually operated outward-opening structures: the window sash is positioned by a support rod, requiring the operator to lean out of the cart to open and close it. In the event of sudden rain or snow, there is often not enough time to close the window. Existing ventilation windows also have two major drawbacks: first, the fan frame is directly exposed without a rainproof structure, allowing rainwater to easily be drawn back into the cart with the airflow, damaging electrical equipment; second, the window sash has poor sealing when closed, leaving a risk of water leakage in rainy weather, affecting the hygiene of the food cart's interior and the safety of the goods. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ventilation window for a catering cart, which can solve the problems in the prior art.

[0004] This utility model is achieved through the following technical solution: A ventilation window sash for a catering cart includes a housing, a mounting plate is provided on the front side of the housing, and a ventilation fan is provided inside the mounting plate. The mounting plate is hinged to the housing via a quick-release assembly. A flange plate is fixed to the outer surface of the housing. A window sash is hinged to the rear side of the housing. An electric push rod assembly for opening and closing the window sash is provided inside the housing. Two baffles are fixed inside the housing, one on each side. An inner window is fixed inside the window sash.

[0005] In a further technical solution, when the window sash is closed, the inner window abuts against one side of the baffle, and when the mounting plate is installed and fixed to one side of the box, the mounting plate abuts against the other side of the baffle.

[0006] A further technical solution includes a quick-installation component comprising a rotating base, a rotating shaft fixed inside the rotating base, the rotating shaft being rotatably connected to the housing, a slot being provided inside the rotating base, a mounting plate being inserted into the slot, and a fixing structure being provided between the mounting plate and the housing.

[0007] A further technical solution includes a fixing structure comprising two connecting blocks fixed to the rear side of the mounting plate, and a protrusion on each side of the top of the housing, wherein the connecting blocks and the protrusions are fixedly connected.

[0008] In a further technical solution, the connecting block is provided with a threaded hole, the protrusion is provided with a through hole, and a bolt is provided to pass through the through hole and then threadedly engage with the threaded hole for connection.

[0009] In a further technical solution, connecting shafts are fixed on both sides of the window sash, and the connecting shafts are rotatably connected to the housing.

[0010] A further technical solution includes an electric push rod assembly comprising a cavity disposed within a housing, a base fixed to the bottom of the cavity, an electric push rod rotatably disposed on the base, a telescopic push rod disposed within the electric push rod, and mating seats fixed on both sides of the inner window, the push rod being rotatably connected to the mating seats.

[0011] The beneficial effects of this utility model are: First, by setting the window sash to be electrically opened, the container can be isolated from the external space during inclement weather to prevent rain, snow, and strong winds from entering the container and the food truck. During normal weather, the window sash can be opened to achieve normal ventilation.

[0012] Second, by setting a cavity inside the box, which is used to install and fix components such as baffles and bases, sufficient working space is provided for the electric push rod assembly. When the window sash and mounting plate are in the closed state, the baffles support the mounting plate and the inner window, improving the structural stability in the closed state. Furthermore, because the mounting plate abuts against the baffles, the airflow is concentrated in the ventilation fan, improving the ventilation effect. Attached Figure Description

[0013] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of a ventilation window sash in a food cart according to the present invention; Figure 2 for Figure 1 Schematic diagram of the rear structure of the device; Figure 3 for Figure 1 A schematic diagram of the device installed on one side of the vehicle body; Figure 4 for Figure 2 A schematic diagram of the structure from below after the middle window sash is opened; Figure 5 for Figure 1 Top view of the structure after the middle mounting plate is opened; In the figure, there are: connecting block 12, mounting plate 13, slot 16, rotating seat 17, rotating shaft 18, flange plate 19, box 21, connecting shaft 22, window sash 23, mounting hole 24, vehicle body 25, electric push rod 31, push rod 32, mating seat 33, inner window 34, cavity 35, baffle 36, ventilation fan 41, protrusion 43, through hole 44, base 45, and threaded hole 47. Detailed Implementation

[0015] like Figures 1-5As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationship of the ventilator window of this utility model is consistent in the up, down, left, right, front and back directions. It includes a box body 21, a mounting plate 13 is provided on the front side of the box body 21, a ventilation fan 41 is provided in the mounting plate 13, the mounting plate 13 is hinged to the box body 21 by a quick-release assembly, a flange plate 19 is fixed on the outer surface of the box body 21, fasteners are installed in the flange plate 19 and fixedly connected to the food cart, a window sash 23 is hinged on the rear side of the box body 21, an electric push rod assembly for opening and closing the window sash 23 is provided in the box body 21, a baffle 36 is fixed on the left and right sides of the box body 21, and an inner window 34 is fixed in the window sash 23.

[0016] Advantageously, it also includes a vehicle body 25, which has mounting holes 24. The housing 21 is inserted into the mounting holes 24, and fasteners are provided in the flange plate 19 to fix it to the vehicle body 25.

[0017] Advantageously, when the window sash 23 is closed, the inner window 34 abuts against one side of the baffle 36, and when the mounting plate 13 is installed and fixed to one side of the housing 21, the mounting plate 13 abuts against the other side of the baffle 36. When the window sash 13 is closed, the edge of the inner window 34 abuts against the sealing strip on one side of the baffle 36. After the mounting plate 13 is fixed, its edge abuts against the sealing strip on the other side of the baffle 36, thus achieving double sealing.

[0018] Advantageously, the quick-installation assembly includes a rotating seat 17, a rotating shaft 18 fixed inside the rotating seat 17, the rotating shaft 18 being rotatably connected to the housing 21, a slot 16 being provided inside the rotating seat 17, a mounting plate 13 being inserted into the slot 16, and a fixing structure being provided between the mounting plate 13 and the housing 21.

[0019] Advantageously, the fixing structure includes two connecting blocks 12 fixed to the rear side of the mounting plate 13, and a protrusion 43 is fixed on the top of the housing 21 on the left and right sides, and the connecting blocks 12 and the protrusions 43 are fixedly connected.

[0020] Advantageously, the connecting block 12 has a threaded hole 47, and the protrusion 43 has a through hole 44. A bolt passes through the through hole 44 and engages with the threaded hole 47 to secure the connecting block 12 and the protrusion 43. An anti-loosening washer is provided on the bolt's threaded portion to improve the stability of the connection between the protrusion 43 and the connecting block 12. A spring anti-loosening washer fitted on the bolt's threaded portion effectively prevents the bolt from loosening due to the movement of the food cart, ensuring a stable connection of the mounting plate 13.

[0021] Advantageously, connecting shafts 22 are fixed on both sides of the window sash 23, and the connecting shafts 22 are rotatably connected to the housing 21.

[0022] Advantageously, the electric push rod assembly includes a cavity 35 disposed within the housing 21, a base 45 fixed at the bottom of the cavity 35, an electric push rod 31 rotatably disposed on the base 45, a telescopic push rod 32 disposed inside the electric push rod 31, and mating seats 33 fixed on both sides of the inner window 34, with the push rod 32 rotatably connected to the mating seats 33.

[0023] When installing the device, first insert the housing 21 into the mounting hole 24 of the vehicle 25, and then fix it to the vehicle 25 with fasteners (such as bolts) in the flange plate 19. The window sash 23 is placed outside the dining car, and the ventilation fan 41 is placed inside the dining car. When the window sash 23 is closed, it can protect the ventilation fan 41 from wind and rain. When the window sash 23 is opened, the ventilation fan 41 can be used for ventilation.

[0024] When the window sash 23 is opened, the electric push rod 31 drives the push rod 32 to extend. Then, since one end of the push rod 32 is connected to the inner window 34 through the mating seat 33, the inner window 34 and the window sash 23 can be flipped out around the connecting shaft 22, realizing the opening function of the window sash 23. At this time, the internal space of the box 21, the dining car and the external space are connected.

[0025] The electric push rod 31 is powered by the DC power supply inside the dining car and its forward and reverse rotation is controlled by a relay: when powered on and rotating forward, the push rod 32 extends and drives the window sash 23 to rotate outward around the connecting shaft 22 to open; when powered on and rotating in reverse, the push rod 32 retracts and pulls the window sash 23 to close.

[0026] When assembling the mounting plate 13, first rotate the rotating seat 17 around the rotating shaft 19 to a horizontal position, then insert the mounting plate 13 into the slot 16 of the rotating seat 17, and finally rotate the mounting plate 13 to align the connecting block 12 with the protrusion 43. Then fix the connecting block 12 and the protrusion 43 with bolts to complete the installation of the mounting plate 13.

[0027] The ventilation fan 41 uses an axial flow fan, and the mounting plate 13 is equipped with a filter-type air inlet, which can reduce noise while ensuring ventilation efficiency and meet the heat dissipation needs of cooking in the food cart.

[0028] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without creative effort should be included within the protection scope of this utility model; therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A ventilation window for a dining car, comprising a housing (21), wherein a mounting plate (13) is provided on the front side of the housing (21), and a ventilation fan (41) is provided inside the mounting plate (13), characterized in that, The mounting plate (13) is hinged to the housing (21) via a quick-release assembly. A flange plate (19) is fixed on the outer surface of the housing (21). A window sash (23) is hinged to the rear side of the housing (21). An electric push rod assembly for opening and closing the window sash (23) is provided inside the housing (21). A baffle (36) is fixed on the left and right sides inside the housing (21). An inner window (34) is fixed inside the window sash (23).

2. The ventilation window of a dining car according to claim 1, characterized in that: When the window sash (23) is closed, the inner window (34) abuts against one side of the baffle (36), and when the mounting plate (13) is installed and fixed on one side of the box (21), the mounting plate (13) abuts against the other side of the baffle (36).

3. A ventilation window for a dining car according to claim 1, characterized in that: The quick-installation assembly includes a rotating base (17), in which a rotating shaft (18) is fixed. The rotating shaft (18) is rotatably connected to the housing (21). A slot (16) is provided in the rotating base (17), and the mounting plate (13) is inserted into the slot (16). A fixing structure is also provided between the mounting plate (13) and the housing (21).

4. A ventilation window for a dining car according to claim 3, characterized in that: The fixing structure includes two connecting blocks (12) fixed to the rear side of the mounting plate (13), and a protrusion (43) is fixed on the top of the box (21) on the left and right sides. The connecting blocks (12) and the protrusions (43) are fixedly connected.

5. A ventilation window for a dining car according to claim 4, characterized in that: The connecting block (12) is provided with a threaded hole (47), and the protrusion (43) is provided with a through hole (44). A bolt is provided to pass through the through hole (44) and then threadedly engage with the threaded hole (47).

6. A ventilation window for a dining car according to claim 1, characterized in that: The window sash (23) is fixed with connecting shafts (22) on both sides, and the connecting shafts (22) are rotatably connected to the box body (21).

7. A ventilation window sash for a dining car according to any one of claims 1-6, characterized in that: The electric push rod assembly includes a cavity (35) disposed within the housing (21), a base (45) fixed at the bottom of the cavity (35), an electric push rod (31) rotatably disposed on the base (45), a telescopic push rod (32) disposed inside the electric push rod (31), and mating seats (33) fixed on both sides of the inner window (34), the push rod (32) and the mating seats (33) being rotatably connected.

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