Foot blowing air duct assembly and HVAC air conditioning cabinet

Abstract

The utility model discloses a foot blowing air duct assembly and an HVAC air handling unit, an air duct right shell of the foot blowing air duct assembly forms a connecting part at the air inlet end of the foot blowing air duct assembly, the connecting part is of an annular structure matched and connected with the air inlet end, and an air duct left shell is connected with the air duct right shell and the connecting part in a buckled mode; in the assembling process, the foot blowing air duct assembly is in butt joint with the installation part on the air conditioner box shell through the connecting part, the connecting part is an annular whole, the structure of the foot blowing air duct assembly is stable, the assembling difficulty can be reduced, and the influence on buckling connection of the air duct left shell and the air duct right shell caused by stress in the assembling process can be avoided; the sealing performance of the foot blowing air duct assembly after assembly can be guaranteed; therefore, the foot blowing air duct assembly can effectively solve the problem that the buckling position of the air inlet end is easy to disengage when an existing foot blowing air duct assembly is assembled, and achieves the effects of reducing the assembling difficulty and improving the reliability of an HVAC air handling unit.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle ventilation devices, and particularly relates to a foot blowing air duct assembly and an HVAC air conditioning box. Background Art

[0002] The HVAC air conditioning box is one of the important components of a vehicle air conditioning system. As shown in the attached drawings of the specification of the present invention Figure 1 and the attached drawings of the specification of Chinese Patent CN212685160U Figure 1 As shown, the HVAC air conditioning box includes an air conditioning box housing 1 and a foot blowing air duct assembly 2 connected to the air conditioning box housing. Existing foot blowing air duct assemblies are mostly composed of a duct left housing 3 and a duct right housing 4 that are oppositely buckled and connected; a foot blowing air duct is formed inside the foot blowing air duct assembly. The air inlet end of the foot blowing air duct assembly is communicated with the air outlet on the air conditioning box housing, and the air outlet end of the foot blowing air duct assembly is communicated with the air outlet inside the vehicle facing the feet of passengers, so as to convey the warm air or cold air output from the air outlet to the feet of the driver and passengers. As shown in the attached drawings of the specification of the present invention Figure 2 As shown, in order to facilitate the installation of the foot blowing air duct assembly onto the air conditioning box housing, generally, the air conditioning box housing is designed to have a protruding mounting portion 5 at the air outlet; during assembly, first, the air inlet end of the foot blowing air duct assembly is oriented towards the mounting portion, and the mounting portion is inserted into the foot blowing air duct assembly to achieve the installation positioning before connection. Then, the foot blowing air duct assembly is connected to the air conditioning box housing through fasteners or other connection structures; however, since existing foot blowing air duct assemblies are mostly composed of a duct left housing and a duct right housing that are buckled and connected, when the mounting portion is inserted into the foot blowing air duct assembly, the mounting portion is likely to cause the buckling at the air inlet end of the duct left housing and the duct right housing to become disengaged or have a gap, which easily leads to difficult assembly and air leakage of the foot blowing air duct assembly. Summary of the Invention

[0003] Aiming at the above-mentioned deficiencies of the prior art, the purpose of the present utility model is to provide a foot blowing air duct assembly and an HVAC air conditioning box, so as to solve the technical problem that the buckling at the air inlet end of the existing foot blowing air duct assembly is prone to disengagement during assembly, and achieve the effects of reducing the assembly difficulty and improving the reliability of the HVAC air conditioning box.

[0004] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0005] A foot blowing air duct assembly includes a duct left housing and a duct right housing that are buckled and connected. A connecting portion is formed by extending the air inlet end of the foot blowing air duct assembly. The connecting portion is in a ring structure that matches and connects with the air inlet end. A part of one end of the connecting portion facing the foot blowing air duct assembly is connected to the duct right housing and is an integral structure, and another part forms an axial buckling surface and is buckled and connected to the corresponding end of the duct left housing.

[0006] Further, a clamping groove is provided on the inner side surface of the connecting portion.

[0007] The utility model further includes an HVAC air conditioning box, which includes an air conditioning box housing and the above-mentioned foot blowing air duct assembly; an air outlet matching the foot blowing air duct assembly is provided on the air conditioning box housing, and a raised mounting portion is provided on the air conditioning box housing at the air outlet, and a clamping convex is provided on the outer side surface of the mounting portion; the air inlet end of the foot blowing air duct assembly faces the mounting portion, the mounting portion is located inside the connecting portion, the outer side surface of the mounting portion abuts against the inner side surface of the connecting portion, and the clamping convex is located in the clamping groove so that the connecting portion is fixedly connected to the mounting portion.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] For the foot blowing air duct assembly of the utility model, the design of the air duct right shell forms a connecting portion at the air inlet end of the foot blowing air duct assembly, and the connecting portion is in a ring structure matching and connecting with the air inlet end. The air duct left shell is respectively buckled and connected with the air duct right shell and the connecting portion; during assembly, the foot blowing air duct assembly is docked with the mounting portion on the air conditioning box housing through the connecting portion. The connecting portion is an annular integral body, which not only has a stable structure itself, is beneficial to reducing the assembly difficulty, but also can avoid the influence of the force during assembly on the buckling connection between the air duct left shell and the air duct right shell, and is beneficial to ensuring the sealing performance of the foot blowing air duct assembly after assembly. Description of the Drawings

[0010] Figure 1 is a three-dimensional view of the existing HVAC air conditioning box in the background art;

[0011] Figure 2 is a three-dimensional view of the air conditioning box housing in the background art and the embodiment;

[0012] Figure 3 is a three-dimensional view of the HVAC air conditioning box in the embodiment;

[0013] Figure 4 is a three-dimensional view of the foot blowing air duct assembly in the embodiment;

[0014] Figure 5 is a three-dimensional view of the air duct right shell in the embodiment;

[0015] Among them, the air conditioning box housing is 1, the foot blowing air duct assembly is 2, the air duct left shell is 3, the air duct right shell is 4, the mounting portion is 5, the connecting portion is 6, the clamping groove is 7, and the clamping convex is 8. Detailed Embodiments

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0017] Embodiment:

[0018] Please refer to Figure 4 and Figure 5 , a foot blowing air duct assembly, including a duct left housing 3 and a duct right housing 4 which are snap-connected. The air inlet end of the foot blowing air duct assembly 2 extends to form a connecting portion 6. The connecting portion 6 is in a ring structure that matches and connects with the air inlet end. A part of one end of the connecting portion 6 facing the foot blowing air duct assembly 2 is connected to the duct right housing 4 and is an integral structure, and the other part forms an axial snap surface and is snap-connected to the corresponding end of the duct left housing 3.

[0019] In the foot blowing air duct assembly of the present utility model, it is designed that the duct right housing 4 (or the duct left housing 3, there is no substantial difference between the duct left housing 3 and the duct right housing 4 itself, and the embodiment is described based on the state shown in the drawings) forms the connecting portion 6 at the air inlet end of the foot blowing air duct assembly 2. The connecting portion 6 is in a ring structure that matches and connects with the air inlet end. The duct left housing 3 is snap-connected to the duct right housing 4 and the connecting portion 6 respectively; as Figure 3 shown, during assembly, the foot blowing air duct assembly 2 is docked with the mounting portion 5 on the air-conditioning box housing 1 through the connecting portion 6. The connecting portion 6 is a circular integral body, which not only has a stable structure itself, is beneficial to reducing the assembly difficulty, but also can avoid the influence of the force during assembly on the snap connection between the duct left housing 3 and the duct right housing 4 respectively, and is beneficial to ensuring the sealing performance of the foot blowing air duct assembly 2 after assembly; therefore, the present utility model can effectively solve the problem that the snap joint at the air inlet end of the existing foot blowing air duct assembly is prone to come off, and achieve the effects of reducing the assembly difficulty and improving the reliability of the HVAC air-conditioning box.

[0020] Please refer to Figure 4 and Figure 5 , a clamping groove 7 is provided on the inner side surface of the connecting portion 6. In this embodiment, the clamping groove 7 runs through the connecting portion 6; in this way, a clamping projection 8 is correspondingly provided on the mounting portion 5 of the air-conditioning box housing 1. During assembly, the cooperation between the clamping groove 7 and the clamping projection 8 is beneficial to improving the connection reliability between the foot blowing air duct assembly 2 and the air-conditioning box housing 1.

[0021] Please refer to Figure 2 and Figure 3, To facilitate a full understanding of the foot - blowing air duct assembly of the present utility model, the HVAC air - conditioning box corresponding to the foot - blowing air duct assembly 2 is introduced as follows: The HVAC air - conditioning box includes an air - conditioning box housing 1 and the foot - blowing air duct assembly 2 as described above; The air - conditioning box housing 1 has an air outlet that matches the foot - blowing air duct assembly 2. The air - conditioning box housing 1 has a raised mounting portion 5 around the air outlet. A clamping projection 8 is provided on the outer side surface of the mounting portion 5; The air inlet end of the foot - blowing air duct assembly 2 faces the mounting portion 5. The mounting portion 5 is located within the connecting portion 6. The outer side surface of the mounting portion 5 abuts against the inner side surface of the connecting portion 6. The clamping projection 8 is located within the clamping groove 7 so that the connecting portion 6 is fixedly connected to the mounting portion 5.

[0022] For the HVAC air - conditioning box of the present utility model, the foot - blowing air duct assembly 2 thereon is composed of a left air - duct housing 3 and a right air - duct housing 4 which are snap - connected. The air inlet end of the foot - blowing air duct assembly 2 that is assembled and connected to the air - conditioning box housing 1 adopts an integrally - designed annular connecting portion 6. The annular connecting portion 6 can achieve a complete embrace when cooperating with the mounting portion 5 on the air - conditioning box housing 1. The foot - blowing air duct assembly 2 is not easily separated due to the assembly force and is not easily detached from the mounting portion 5. In addition, two snap - connection structures are added between the connecting portion 6 and the mounting portion 5, which can effectively assemble and fix the foot - blowing air duct assembly 2 to the air - conditioning box housing 1.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present utility model without departing from the purpose and scope of the technical solutions should be covered within the scope of the claims of the present utility model.

Claims

1. A foot-blowing air duct assembly, characterized in that: It includes a left air duct housing and a right air duct housing that are snap-connected. The air inlet end of the foot blowing air duct assembly extends to form a connecting portion, and the connecting portion is in a ring structure that matches and connects with the air inlet end. A part of one end of the connecting portion facing the foot blowing air duct assembly is connected to the right air duct housing and is an integral structure, and the other part forms an axial snap surface and is snap-connected to the corresponding end of the left air duct housing.

2. The air duct assembly for blowing feet according to claim 1, characterized in that: A clamping groove is provided on the inner side surface of the connecting portion.

3. An HVAC air handling unit, characterized in that: It includes an air-conditioning box housing and the foot blowing air duct assembly as described in claim 2; the air-conditioning box housing has an air outlet that matches the foot blowing air duct assembly, and the air-conditioning box housing has a raised mounting portion around the air outlet. A clamping projection is provided on the outer side surface of the mounting portion; the air inlet end of the foot blowing air duct assembly faces the mounting portion, the mounting portion is located inside the connecting portion, the outer side surface of the mounting portion abuts against the inner side surface of the connecting portion, and the clamping projection is located in the clamping groove so that the connecting portion is fixedly connected to the mounting portion.

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