An air inlet structure that is easy to adjust

Abstract

The utility model relates to the technical field of negative pressure ambulances, and in particular to an air intake structure that is easy to adjust. The utility model includes an air intake hood, and connecting ears fixed at both ends of the air intake hood, one side of the two connecting ears is fixed with an in-vehicle ventilation trim, and a connecting tube is integrally fixed to the side of the air intake hood away from the in-vehicle ventilation trim. An adjustment mechanism is installed between the air intake hood and the connecting tube. The adjustment mechanism is used to adjust the air intake volume in the connecting tube. The adjustment mechanism includes a drive assembly and a transmission assembly. The outer side of the air intake hood is equipped with a drive assembly, and an auxiliary assembly is installed between the drive assembly and the connecting tube. The drive assembly includes a servo motor, a driving gear and a power gear. The utility model uses the structural design of the adjustment mechanism to make the device easy to effectively control the trajectory of airflow movement, so that a negative pressure flow domain is formed in the transfer cabin, so as to prevent the accompanying medical staff from being infected, thereby improving the flexibility and safety of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure ambulances, in particular to an air inlet structure which is easy to adjust. Background Art

[0002] At present, all vehicles use resistance-free air inlets, and the air intake volume is based on the pressure provided by the fan. Negative pressure ambulances are important means of transportation for transporting highly infectious patients. The principle is to install a negative pressure device at the air outlet to form a negative pressure flow basin in the transfer cabin. The purpose is to effectively control the airflow trajectory and prevent the accompanying medical staff from being infected. However, since negative pressure ambulances still use ordinary resistance-free air inlets, the internal airflow trajectory cannot be well controlled. Therefore, an air inlet with resistance is urgently needed to solve this problem. For this reason, we propose an air inlet structure that is easy to adjust. Utility Model Content

[0003] The purpose of the utility model is to provide an air inlet structure that is easy to adjust to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An air intake structure that is easy to adjust includes an air intake hood and connecting ears fixed at both ends of the air intake hood, an in-vehicle ventilation trim panel is fixed to one side of the two connecting ears, a connecting tube is integrally fixed to the side of the air intake hood away from the in-vehicle ventilation trim panel, an adjustment mechanism is installed between the air intake hood and the connecting tube, and the adjustment mechanism is used to adjust the air intake volume in the connecting tube.

[0006] Preferably, the adjustment mechanism includes a driving assembly and a transmission assembly, the driving assembly is mounted on the outer side of the air intake hood, and an auxiliary assembly is mounted between the driving assembly and the connecting cylinder.

[0007] Preferably, the driving assembly includes a servo motor, a driving gear and a power gear. The servo motor is fixed to the outside of the air intake hood, the driving gear is fixed to the output end of the servo motor, the power gear is meshed and connected to the outside of the driving gear, and the power gear is rotatably connected to the connecting cylinder.

[0008] Preferably, the auxiliary component includes an air intake guide plate and an adjustment port, the inner side of the power gear is equipped with an air intake guide plate, and the inner side of the air intake guide plate is provided with two adjustment ports.

[0009] Preferably, two limit grooves are provided on the outer side of the connecting tube, and a positioning shaft is slidably connected to the inner side of the two limit grooves. Both ends of the positioning shaft are fixed to the inner side of the power gear, and both ends of the positioning shaft are fixed with fixing ears, and the fixing ears are fixed to the air intake guide plate.

[0010] Preferably, a windshield is fixed to one end of the inner side of the connecting tube, and two horn openings corresponding to the positions of the adjustment ports are provided on the inner side of the windshield.

[0011] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0012] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0013] The utility model makes it easy to effectively control the airflow movement trajectory of the device through the structural design of the adjustment mechanism, so that a negative pressure flow domain is formed in the transfer cabin, thereby preventing the accompanying medical staff from being infected, and improving the flexibility and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are 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.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection structure of the air intake cover and the connection ear of the utility model;

[0017] Figure 3 It is a schematic diagram of the connection structure of the air intake hood and the connection tube of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure of the connection tube and the wind shield plate of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] In the figure: 1. Air intake hood; 2. Connecting ear; 3. In-vehicle ventilation trim; 4. Connecting tube; 5. Servo motor; 6. Driving gear; 7. Power gear; 8. Limiting groove; 9. Positioning shaft; 10. Fixing ear; 11. Air intake guide plate; 12. Adjustment port; 13. Wind shield; 14. Horn port. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] Example

[0023] Reference Figure 1-4 An air intake structure that is easy to adjust includes an air intake hood 1, and connecting ears 2 fixed at both ends of the air intake hood 1, one side of the two connecting ears 2 is fixed with an in-vehicle ventilation trim panel 3, and a connecting tube 4 is integrally fixed to the side of the air intake hood 1 away from the in-vehicle ventilation trim panel 3. An adjusting mechanism is installed between the air intake hood 1 and the connecting tube 4, and the adjusting mechanism is used to adjust the air intake volume in the connecting tube 4.

[0024] The regulating mechanism comprises a driving assembly and a transmission assembly. The driving assembly is mounted on the outer side of the air inlet hood 1 , and an auxiliary assembly is mounted between the driving assembly and the connecting tube 4 .

[0025] The driving assembly includes a servo motor 5, a driving gear 6 and a power gear 7. The servo motor 5 is fixed to the outside of the air intake cover 1, and the output end of the servo motor 5 is fixed to the driving gear 6. The outer side of the driving gear 6 is meshed and connected with the power gear 7. The power gear 7 is rotatably connected to the connecting tube 4. When the servo motor 5 is started, the output end of the servo motor 5 drives the driving gear 6 to mesh with the power gear 7 to rotate.

[0026] The auxiliary components include an air inlet guide plate 11 and an adjustment port 12. The air inlet guide plate 11 is installed on the inner side of the power gear 7. Two adjustment ports 12 are opened on the inner side of the air inlet guide plate 11. When the power gear 7 rotates, the air inlet guide plate 11 can be driven to rotate synchronously. At the same time, the centers of the air inlet guide plate 11 and the wind shield 13 are on the same axis. The size of the effective ventilation area of ​​the horn opening 14 can be calculated based on the integral.

[0027] Two limit grooves 8 are provided on the outer side of the connecting tube 4, and a positioning shaft 9 is slidably connected to the inner side of the two limit grooves 8. Both ends of the positioning shaft 9 are fixed to the inner side of the power gear 7. Both ends of the positioning shaft 9 are fixed with fixing ears 10, and the fixing ears 10 are fixed to the air intake guide plate 11. The setting of the limit grooves 8 facilitates the guidance and limiting effects of the movement of the positioning shaft 9.

[0028] A windshield 13 is fixed to one end of the inner side of the connecting tube 4, and two horn openings 14 corresponding to the positions of the adjusting port 12 are provided on the inner side of the windshield 13. One end of the horn opening 14 has an extremely small opening, and the other end has a extremely large opening. The size of the openings therebetween changes linearly, so that the effect of wire-controlled air intake can be achieved by adjusting the degree of overlap between the two ends of the adjusting port 12 and the horn opening 14.

[0029] From the above, we can know that:

[0030] The utility model aims at the technical problem that since the negative pressure ambulance still uses the common non-resistance air inlet, the internal air flow trajectory still cannot be well controlled, so an air inlet with resistance is urgently needed to solve this problem; the technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solution is:

[0031] During use, when it is necessary to adjust the opening size of the horn opening 14, the servo motor 5 is started, and the output end of the servo motor 5 drives the active gear 6 to engage the power gear 7 to rotate. Because the power gear 7 is fixed to the positioning shaft 9, the positioning shaft 9 is slidingly connected to the limit groove 8, and the power gear 7 is rotatably connected to the connecting tube 4, the power gear 7 can be rotated along the outer side of the connecting tube 4, so that the air intake guide plate 11 rotates synchronously, and the overlap degree of the adjustment port 12 and the horn opening 14 is adjusted. At the same time, due to the shape of the horn opening 14, one end gradually becomes larger from the other end, so that the vent will gradually become larger, thereby achieving the effect of wire-controlled air intake.

[0032] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0033] The utility model uses the structural design of the adjustment mechanism to make the device easy to effectively control the airflow movement trajectory, so that a negative pressure flow domain is formed in the transfer cabin, thereby preventing the accompanying medical staff from being infected, and improving the flexibility and safety of the device.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An adjustable air inlet structure, characterized in that: The invention comprises an air intake hood (1) and connecting ears (2) fixed at both ends of the air intake hood (1), an in-vehicle ventilation panel (3) being fixed on one side of the two connecting ears (2), a connecting tube (4) being integrally fixed on the side of the air intake hood (1) away from the in-vehicle ventilation panel (3), an adjusting mechanism being arranged between the air intake hood (1) and the connecting tube (4), and the adjusting mechanism being used to adjust the air intake volume in the connecting tube (4).

2. The adjustable air inlet structure according to claim 1, characterized in that: The regulating mechanism comprises a driving assembly and a transmission assembly. The driving assembly is mounted on the outside of the air intake hood (1), and an auxiliary assembly is mounted between the driving assembly and the connecting cylinder (4).

3. The adjustable air inlet structure according to claim 2, characterized in that: The driving assembly comprises a servo motor (5), a driving gear (6) and a power gear (7); the servo motor (5) is fixed to the outside of the air intake cover (1); the driving gear (6) is fixed to the output end of the servo motor (5); the power gear (7) is meshedly connected to the outside of the driving gear (6); and the power gear (7) is rotatably connected to the connecting cylinder (4).

4. The adjustable air inlet structure according to claim 3, characterized in that: The auxiliary component comprises an air intake guide plate (11) and an adjustment port (12); the inner side of the power gear (7) is equipped with the air intake guide plate (11); and the inner side of the air intake guide plate (11) is provided with two adjustment ports (12).

5. The adjustable air inlet structure according to claim 4, characterized in that: Two limiting grooves (8) are provided on the outer side of the connecting tube (4), and a positioning shaft (9) is slidably connected to the inner side of the two limiting grooves (8). Both ends of the positioning shaft (9) are fixed to the inner side of the power gear (7), and both ends of the positioning shaft (9) are fixed with fixing ears (10), and the fixing ears (10) are fixed to the air intake guide plate (11).

6. The adjustable air inlet structure according to claim 4, characterized in that: A windshield plate (13) is fixed to one end of the inner side of the connecting tube (4), and two horn openings (14) corresponding to the positions of the adjustment openings (12) are provided on the inner side of the windshield plate (13).

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