Air conditioning outlet device

Abstract

The present application provides an air conditioning outlet device having a frame-shaped housing provided with a flow path for air flow. The housing has an overlapping surface capable of overlapping with a fin in a closed state of the flow path, and an avoiding recessed portion recessed from the overlapping surface so as to avoid contact with the fin when the fin is rotated from the closed state. The avoiding recessed portion of the housing and the fin define a blowing-in space into which air can be blown from a gap between the housing and the fin. Either of the fin and the housing has a barrier portion that blocks air flowing in the blowing-in space.

Description

Technical Field

[0001] The present invention relates to an air conditioning outlet device capable of blocking air blown out from the outlet by means of rotating fins. Background Technology

[0002] Air conditioning vent devices are installed in vehicles such as passenger cars, which are vents that blow air into the vehicle interior. Prior art related to air conditioning vent devices is disclosed.

[0003] The air outlet device for air conditioning disclosed in Japanese Patent Application Publication No. 2015-152202 includes: a frame-shaped housing having a flow path for airflow; fins disposed in the flow path and capable of opening and closing the flow path; and an operating knob capable of operating the fins from the outside. The fins have: multiple plate-shaped portions; and shaft portions protruding from each plate-shaped portion in opposite directions and supported on the housing.

[0004] When the occupant operates the control button from the outside, the fins can rotate around the shaft supported on the housing, thereby opening and closing the flow path. When the flow path is closed, it can block the airflow from the outlet to the cabin.

[0005] The fins are designed to rotate within the housing. Furthermore, the fins are mounted relative to the frame-like housing in a manner that embeds them into the fin's shaft. Therefore, a tiny gap is created around the fin's shaft. Even with the flow path closed, air leaking from this gap will still blow into the cabin.

[0006] In particular, when the shell is frame-shaped, that is, when the support portions supporting the shaft portions of the fins are not separate from each other but are integrated, the gap around the shaft portion of the fins inevitably becomes larger in order to embed the fins relative to the shell.

[0007] The objective of this invention is to provide a technique for suppressing air leakage from the gaps around the shaft portion of the fins in an air conditioning outlet device having a frame-shaped housing. Summary of the Invention

[0008] First, an air outlet device for an air conditioner is provided, comprising: a frame-shaped housing having a flow path for airflow; and fins disposed in the flow path and capable of opening and closing the flow path.

[0009] The fin has: a plate-like portion; and a pair of shaft portions that project from the plate-like portion in opposite directions.

[0010] in,

[0011] The housing has a pair of support portions that are integral with each other and support each of the shaft portions.

[0012] Each of the aforementioned support portions includes: a base having a support hole for supporting the shaft portion to rotate; a stepped portion forming a step relative to the base portion with reference to the axial direction of the shaft portion towards the center of the housing; and a connecting portion connecting the base portion and the stepped portion.

[0013] The connecting portion has: an overlapping surface that can overlap with the plate-like portion of the fin when the flow path is closed; and a clearance recess that is recessed from the overlapping surface to avoid contact with the fin when the fin rotates from the closed flow path state.

[0014] With the flow path closed, the recessed portion and the plate-shaped portion of the connector define a blow-in space, allowing air to be blown into the blow-in space from the gap between the plate-shaped portion and the base.

[0015] Either the fin or the shell has a barrier portion that blocks the air flowing in the blow-in space.

[0016] Secondly, preferably, based on the air conditioning outlet device described in the first description, the shaft portion has a large-diameter portion, which has an annular end face capable of contacting the edge of the support hole.

[0017] The barrier portion is composed of a bulge extending from the fins and the large-diameter portion toward the wall surface of the avoidance recess.

[0018] The bulge has a facing surface that is opposite to the wall surface of the recessed relief portion.

[0019] Third, preferably, based on the air conditioning outlet device described in the second description, a cut-out recess is formed on the side of the fin opposite to the bulge.

[0020] Fourth, preferably, based on the air conditioning outlet device described in the first description, the barrier portion is composed of a fin side cover portion provided on the plate-shaped portion in a manner that blocks the airflow space.

[0021] Fifth, preferably, based on the air conditioning outlet device described in the first description, the barrier portion is formed by a housing side cover portion disposed on the housing in a manner that blocks the air inlet space.

[0022] An air outlet device for an air conditioner has: a frame-shaped housing having a flow path for airflow. The housing has a pair of support portions integral with each other and supporting respective shaft portions. Each support portion has: a base having a support hole for supporting the shaft portion to rotate; a stepped portion relative to the base; and a connecting portion connecting the base and the stepped portion.

[0023] The connecting portion has: an overlapping surface that can overlap with the plate-like portion of the fin when the flow path is closed; and a relief recess that is recessed from the overlapping surface so as to avoid contact with the fin when the fin rotates from the closed state.

[0024] With the flow path closed, the recessed portion and plate-shaped portion of the connector define the air inlet space, allowing air to be blown into the air inlet space from the gap between the plate-shaped portion and the base. Either the fin or the shell has a barrier portion that blocks the air flowing in the air inlet space.

[0025] According to the above structure, the flow of air into the blown-in space from the gap between the fins and the shell is blocked by the barrier. This can suppress air leakage around the shaft. Attached Figure Description

[0026] Figure 1 This is a perspective view of the air conditioning outlet device of Embodiment 1.

[0027] Figure 2 yes Figure 1 The diagram shown is an exploded perspective view of the air conditioning outlet device.

[0028] Figure 3 This is a diagram showing the shell and fins viewed from the upstream side.

[0029] Figure 4 This is a diagram showing the finned shell as viewed from the upstream side.

[0030] Figure 5 It is along Figure 4 The sectional view along line 5-5.

[0031] Figure 6 It is along Figure 5 The sectional view along line 6-6.

[0032] Figure 7 This diagram illustrates the structure around the support holes in the shaft portion of the fins and the base portion of the shell.

[0033] Figure 8 It is along Figure 4 A sectional view along line 8–8.

[0034] Figure 9A It is Figure 4 An enlarged view of the area enclosed by line 9A. Figure 9B This is a diagram illustrating the blowing into the space. Figure 9C It is along Figure 9B A sectional view of line 9C-9C in the diagram.

[0035] Figure 10AThis is a diagram illustrating the air conditioning outlet device of Embodiment 2. Figure 10B This is a diagram illustrating the function of the air conditioning blowout device in Example 2.

[0036] Figure 11A This is a diagram illustrating the air conditioning outlet device of Embodiment 2. Figure 11B This is a diagram illustrating the function of the air conditioning blowout device in Example 2. Detailed Implementation

[0037] Embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, Fr indicates front, Rr indicates rear, L indicates left, R indicates right, Up indicates top, and Dn indicates bottom. Furthermore, based on the airflow direction within the housing, the upstream side is designated as rear, and the downstream side as front.

[0038] <Example 1>

[0039] exist Figure 1 The image shows an air conditioning vent device 10 located in front of the occupants in a passenger car. The air conditioning vent device 10 is a resin molded product, and by sliding the operating knob 14 (described later) left and right, it is possible to block the air blown from the vent into the passenger compartment.

[0040] Reference Figure 2 The air conditioning outlet device 10 includes: a frame-shaped housing 20 having a flow path 21 for airflow; a finned unit 19 disposed in the flow path 21 and capable of opening and closing the flow path 21; an outlet-side component 11 that can be installed in the outlet 24 of the housing 20; and an operating button 14 that can be installed in the outlet-side component 11 and can be operated by an occupant from the outside to the finned unit 19.

[0041] The blow-out side component 11 has a frame-shaped main body 12 and a plate-shaped strip 13, which is arranged in such a way that it divides the interior of the main body 12 along the long side.

[0042] The operating button 14 has a pair of knob halves 15, 15 that clamp the elongated portion 13, and a connecting member 16 that is supported on the pair of knob halves 15, 15 and connects the operating button 14 to the fin unit 19.

[0043] The fin unit 19 has plate-shaped first fins 31 to fifth fins 35, and a connecting rod 36 that connects the first fins 31 to fifth fins 35 to each other so that the orientation of each fin is synchronized. In addition, the number of fins can be changed appropriately.

[0044] Reference Figure 3The basic structures of the first fin 31 to the fifth fin 35 are the same. Hereinafter, the first fin 31 to the fifth fin 35 will be described as "fin 30". The fin 30 is configured to have a plate-shaped portion 60 and a pair of shaft portions 70, 70 protruding from the plate-shaped portion 60 in opposite directions.

[0045] The housing 20 is integrally formed having: a pair of support portions 40, 40 extending parallel to each other and capable of supporting each fin 30; and sidewall portions 49, 49 extending in a direction perpendicular to the support portions 40, 40 and connecting the two ends of the support portions 40, 40 to each other.

[0046] refer to Figure 4 and Figure 5 When the operating button 14 is moved left or right, the connecting part 16 fixed to the operating button 14 also moves left or right. The groove 17 of the connecting part 16 clamps the rod-shaped portion 33a of the third fin 33. When the rod-shaped portion 33a moves along the groove 17, the third fin 33 rotates about the shaft portion 70. The first fin 31, the second fin 32, the fourth fin 34, and the fifth fin 35, which are connected to the third fin 33 via the connecting rod 36, oscillate about their respective shaft portions 70.

[0047] Reference Figure 5 Based on the direction of airflow (refer to...) Figure 5 Arrow (1) indicates that, with the flow path 21 closed, the side upstream of the shaft portion 70 of each fin 30 (31-35) is designated as the upstream flow path 22, and the side downstream of the shaft portion 70 of each fin 30 (31-35) is designated as the downstream flow path 23.

[0048] Reference Figure 3 and Figure 5 The plate-shaped portion 60 is integrally configured to include: a central portion 61 between the shaft portions 70 and 70; an upstream fin 62 located radially outward of the shaft portion 70 from the central portion 61 and oscillating in the upstream flow path 22; and a downstream fin 65 located radially outward of the shaft portion 70 from the central portion 61 and oscillating in the downstream flow path 23.

[0049] Reference Figure 3 and Figure 6 Each support portion 40 is integrally formed with: a base 41 having a support hole 42 capable of supporting the shaft portion 70; a stepped portion 47 forming a step relative to the base 41; and a connecting portion 50 connecting the base 41 and the stepped portion 47. When the direction extending along the axis AX of the shaft portion 70 (vertical direction) is taken as a reference, the stepped portion 47 is closer to the center CL of the housing 20 than the base 41. The base 41 has a guide groove 45 that guides the shaft portion 70 toward the support hole 42 when the fin unit 19 is inserted and installed in the housing 20.

[0050] Reference Figure 7 The connecting portion 50 in the support portion 40 has the following characteristics: in the state where the flow path 21 is closed (see reference 40) Figure 5 The overlapping surface 51 that overlaps with the front surface 63 of the upstream fin 62; and the recessed avoidance recess 52 that is recessed from the overlapping surface 51.

[0051] The clearance recess 52 opens towards the upstream side (rear) and is configured not to contact the center portion 61 and shaft portion 70 of the fin 30 when the fin 30 rotates. The wall surface 53 of the clearance recess 52 is an arc-shaped surface centered on the axis AX.

[0052] Reference Figure 7 and Figure 8 The shaft portion 70 is integrally configured with: a small-diameter portion 71 whose outer peripheral surface 72 is rotatably supported on the inner peripheral surface 43 of the support hole 42; and a large-diameter portion 73 with a diameter larger than the small-diameter portion 71 and located closer to the center CL side of the housing 20 than the small-diameter portion 71. The annular outer end face 74 of the large-diameter portion 73 can contact the edge 44 of the support hole 42. The large-diameter portion 73 restricts the position of the fin 30 (in the axial direction AX).

[0053] Reference Figure 9B and Figure 9C The wall surface 53 of the clearance recess 52 has: an outer peripheral portion 54 located on the outer peripheral side of the outer peripheral surface 75 of the large diameter portion 73 of the fin 30; and a non-contact portion 55 located closer to the center CL than the outer peripheral portion 54 and not in contact with the outer peripheral surface 75 of the large diameter portion 73. When the flow path 21 is closed, the front surface 66 of the central portion 61 of the fin 30, the non-contact portion 55 of the clearance recess 52, and the inner end face (facing the center CL) of the large diameter portion 73 define a semi-cylindrical blow-in space S. Furthermore, for ease of explanation of this blow-in space S, in... Figure 9B as well as Figure 9C The “barrier section 80”, which will be described later, is not depicted in the text.

[0054] Reference Figure 9A Within the housing 20, the fins 30 are arranged in a rotatable manner. Therefore, on the end face 64 of the fin 62 upstream of the fifth fin 35 (also refer to...) Figure 7 A slight gap is created between the base 41 and the inner surface 46 (the surface facing the central CL side). As indicated by arrow (2), air can enter this gap.

[0055] Reference Figure 9B and Figure 9C A gap is also created at the boundary between the large diameter portion 73 and the end face 64 of the upstream fin 62, and at the location overlapping the boundary between the clearance recess 52 and the overlapping surface 51. Air flowing between the end face 64 and the inner surface 46 enters the airflow space S through this gap as the inlet E.

[0056] Reference Figure 7 and Figure 8 Fin 30 has a barrier against airflow from the air-blown space S (see reference). Figure 9B The barrier portion 80 is a barrier portion for air flowing towards the downstream flow path 23. The barrier portion 80 is configured to have a bulge portion 81 that bulges out from the central portion 61 and the large diameter portion 73 of the fin 30 toward the wall surface 53 of the avoidance recess 52. In other words, the bulge portion 81 narrows the air flow path by filling the blown-in space S.

[0057] The bulge 81 has a facing surface 82 that opposes the wall surface 53 of the relief recess 52. In other words, the facing surface 82 of the bulge 81 can also be described as a surface extending from the edge 75a of the outer peripheral surface 75 of the large-diameter portion 73 toward the center CL side of the housing 20. The facing surface 82 is an arc-shaped surface centered on the axis AX, and it is also a surface along the wall surface 53 of the relief recess 52. Preferably, a small gap D is provided between the facing surface 82 of the bulge 81 and the wall surface 53 of the relief recess 52, which will not hinder the rotation of the fin 30. The upper surface 83 of the bulge 81 and the inner surface 48 (the surface facing the center CL side) of the stepped portion 47 are located on approximately the same plane.

[0058] As described above, a gap D is provided between the opposing surface 82 of the bulge 81 and the wall surface 53 of the clearance recess 52. Even if air is blown in from the inlet E into the blowing space S (see reference...) Figure 9B and Figure 9C In the case shown by arrow (3), the blown air also flows in the gap D between the opposing surface 82 of the bulge 81 and the wall surface 53 of the clearance recess 52. Compared with the case without the bulge 81 (barrier 80), the air flow rate is slower and the leakage of air around the shaft 70 can be suppressed.

[0059] Reference Figure 7 and Figure 8 The central portion 61 of the fin 30 has a cut-out recess 84 that is recessed from the rear surface 67 of the central portion 61 toward the bulge 81. That is, the cut-out recess is formed on the opposite side of the bulge 81. The bulge 81 is box-shaped and opens toward the upstream flow path 22. This can shorten the time of forming the fins 30 (31-35) and further suppress deformation.

[0060] <Example 2>

[0061] Reference Figure 10A The air conditioning outlet device 10A of Embodiment 2 has fins 30A. For structures common to the air conditioning outlet device 10 of Embodiment 1, the same reference numerals as in Embodiment 1 are used, and descriptions are omitted.

[0062] Reference Figure 10A and Figure 10B The barrier portion 80A is composed of a fin side cover portion 86 disposed in the central portion 61 of the fin 30A in a manner that blocks the blow-in space S. The fin side cover portion 86 is semi-circular in shape, and its thickness and diameter are approximately the same as those of the large-diameter portion 73. The upper surface 87 (the surface facing the central CL side) of the fin side cover portion 86 and the inner surface 48 of the stepped portion 47 are located on approximately the same plane (so-called coplanar). Preferably, a small gap D that does not hinder the rotation of the fin 30 is provided between the outer peripheral surface 86a of the fin side cover portion 86 and the wall surface 53 of the clearance recess 52.

[0063] As shown by arrow (3), the flow of air from inlet E into the blow-in space S is blocked by the fin side cover 86. This can suppress air leakage around the shaft 70.

[0064] <Example 3>

[0065] Reference Figure 11A The air conditioning outlet device 10B of Embodiment 3 has fins 30B and a housing 20B. For structures common to the air conditioning outlet device of Embodiment 1, the same reference numerals as in Embodiment 1 are used, and descriptions are omitted.

[0066] Reference Figure 11A and Figure 11B The barrier portion 80B is composed of a housing side cover portion 88 provided in the housing 20B to block the blow-in space S. The housing side cover portion 88 is integral with the wall surface 53 of the clearance recess 52, and the upper surface 89 (the surface facing the central CL side) of the housing side cover portion 88 and the inner surface 48 of the stepped portion 47 are located on approximately the same plane (so-called coplanar). The rear surface 89a (the surface facing the upstream side) of the housing side cover portion 88 and the overlapping surface 51 are located on approximately the same plane (so-called coplanar).

[0067] The fin 30B is formed with a clearance groove 68 to avoid contact with the side cover portion 88 of the housing. The clearance groove 68 extends radially inward from the end face of the central portion 61 of the fin 30B.

[0068] As shown by arrow (4), the flow of air from inlet E into the blow-in space S is blocked by the housing side cover 88. This can suppress air leakage around the shaft 70.

[0069] Furthermore, as long as the functions and effects of the present invention can be obtained, the present invention is not limited to the embodiments.

Claims

1. An air outlet device for an air conditioner, comprising: The frame-shaped housing has a flow path for airflow; and fins are disposed in the flow path and are capable of opening and closing the flow path. The fins have: a plate-like portion; And a pair of shaft portions that project from the plate-like portion in opposite directions. in, The housing has a pair of support portions that are integral with each other and support each of the shaft portions. Each of the aforementioned support portions includes: a base having a support hole for supporting the shaft portion to rotate; a stepped portion forming a step relative to the base portion with reference to the axial direction of the shaft portion towards the center of the housing; and a connecting portion connecting the base portion and the stepped portion. The connecting portion has: an overlapping surface that can overlap with the plate-like portion of the fin when the flow path is closed; and a clearance recess that is recessed from the overlapping surface to avoid contact with the fin when the fin rotates from the closed flow path state. With the flow path closed, the recessed portion and the plate-shaped portion of the connector define a blow-in space, allowing air to be blown into the blow-in space from the gap between the plate-shaped portion and the base. Either the fin or the shell has a barrier portion that blocks the air flowing in the blow-in space. The barrier portion is disposed inside the blowing space such that its surface, which is close to the center of the housing, and the surface, which is close to the center of the housing, are located on approximately the same plane in the axial direction of the shaft portion. When the flow path is closed, the blow-in space formed by the fin and the plate-like portion of the adjacent fin overlaps in the axial direction of the shaft portion.

2. The air conditioning outlet device according to claim 1, wherein, The shaft portion has a large-diameter portion, which has an annular end face capable of contacting the edge of the support hole. The barrier portion is composed of a bulge extending from the fins and the large-diameter portion toward the wall surface of the avoidance recess. The bulge has a facing surface that is opposite to the wall surface of the recessed relief portion.

3. The air conditioning outlet device according to claim 2, wherein, A cut-out recess is formed on the side of the fin opposite to the bulge.

4. The air conditioning outlet device according to claim 1, wherein, The barrier portion is composed of a finned side cover portion disposed on the plate-shaped portion in a manner that blocks the blow-in space.

5. The air conditioning outlet device according to claim 1, wherein, The barrier portion is formed by a housing side cover portion of the housing disposed in a manner that blocks the blow-in space.

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