Vehicle register device

Abstract

To provide a vehicle register device which achieves reduction of abnormal noise.SOLUTION: A register device 1 includes: a register body 10 including peripheral walls 11 to 14 forming airflow passage 15 therein; and fins 31a to 31e which are rotatably disposed in the peripheral walls and open or close the airflow passage 15. Stepped surfaces 60 which are abutted against extended portions 70 of the fins in a closed state of the fins 31a to 31e are formed in the upper wall 13 and the lower wall 14. Saw-toothed notches 91 are formed in edge portions of the stepped surfaces 60 on a side of a central axis of the airflow passage 15.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a register device for a vehicle that includes an opening and closing plate portion that opens and closes a ventilation passage. [Background technology]

[0002] A typical register device installed on a vehicle instrument panel or the like includes a register body having an air passage, an outlet-side fin assembly disposed at the air outlet of the air passage, and an upstream-side fin assembly disposed upstream of the air passage. One of the outlet-side fin assembly and the upstream-side fin assembly has multiple fins spaced apart in the vertical direction and extending in the left-right direction, and the air outlet direction can be adjusted vertically by adjusting the inclination of these fins. The other fin assembly has multiple fins spaced apart in the left-right direction and extending in the vertical direction, and the air outlet direction can be adjusted horizontally by adjusting the inclination of these fins.

[0003] The register device can be operated by the occupant to open or close the ventilation passage, thereby selectively stopping the airflow. Among such register devices, there is one in which the fin assembly has a ventilation passage blocking function, as described in Patent Document 1 below.

[0004] In the register device of Patent Document 1, when the fins are tilted to their maximum extent, they overlap and come into contact with each other, and the edges of these fins hit a stepped surface provided on the inside of the peripheral wall of the register body, thereby blocking the ventilation path. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-144551 Summary of the Invention [Problem to be solved by the invention]

[0006] When the flow velocity of air flowing through the ventilation passage inside the register device increases, the flow velocity becomes relatively slower on the surface of the peripheral wall due to viscosity, and large vortices tend to form downstream. In the register device of Patent Document 1, when air passes through the step surface, large vortices may separate from the surface of the peripheral wall, causing sudden pressure fluctuations and the risk of generating abnormal noise. [Means for solving the problem]

[0007] The present invention has been made to solve the above-mentioned problems, and a vehicle register device according to one aspect of the present invention comprises: A register device for a vehicle, comprising: a register body having a peripheral wall inside which forms a ventilation passage; and an opening / closing plate portion rotatably disposed inside the peripheral wall and configured to open and close the ventilation passage, a step surface is formed on the peripheral wall, the step surface coming into contact with an edge of the opening and closing plate portion when the opening and closing plate portion is closed; The step surface has a sawtooth notch formed on an edge portion thereof on the central axis side of the ventilation passage.

[0008] According to the above configuration, the sawtooth notches formed on the edge of the stepped surface on the central axis side of the ventilation passage subdivide the vortices of air passing through the edge of the stepped surface and suppress the separation of large vortices, thereby reducing sudden pressure fluctuations and reducing the generation of abnormal noise.

[0009] Preferably, the inner surface of the peripheral wall is formed with vertical grooves extending from the notches at the edge of the stepped surface in the extension direction of the ventilation passage. According to the above configuration, the longitudinal grooves extending from the notches at the edge of the stepped surface formed on the inner surface of the peripheral wall reduce the area of ​​the peripheral wall where fast-flowing air hits, thereby easing the resistance caused by vortices and reducing contact friction resistance, which in turn reduces pressure loss.

[0010] Preferably, the longitudinal groove has a trapezoidal cross section. According to the above configuration, since the cross section is trapezoidal, contact friction resistance can be reduced even when the longitudinal grooves are angled from being parallel to the flow velocity direction. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a register device for a vehicle that reduces the generation of abnormal noise. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of a register device according to an embodiment of the present invention; [Figure 2] 2 is a perspective cross-sectional view taken along line II-II in FIG. 1, showing a normal air blowing state. FIG. [Figure 3] 2 is a perspective cross-sectional view taken along line II-II in FIG. 1, showing a state in which the ventilation passage is blocked and air blowing is stopped. FIG. [Figure 4] 4 is a perspective cross-sectional view taken along line IV-IV in FIG. 1, showing a state in which the ventilation passage is blocked and air blowing is stopped. FIG. [Figure 5] FIG. 10 is a perspective view showing the inside of the register device, in which the operation knob, the engagement member between the operation knob and the upstream fin, and the left upstream fin are omitted. [Figure 6] FIG. 2 is an enlarged perspective view of the internal main part of the register device. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In the following description, the front, rear, left and right directions are defined based on the front, rear, left and right directions of a vehicle. The register device 1 shown in Fig. 1 is installed on an instrument panel (not shown) of a vehicle. As shown in Figs. 2 to 4, the register device 1 includes a register body 10, and the upstream end of the register body 10 is connected to an air conditioner (not shown) via a duct.

[0014] The register body 10 has a cylindrical shape with a substantially rectangular cross section, extends in the fore-and-aft direction (vehicle length direction) of the vehicle, and has peripheral walls consisting of a left side wall 11, a right side wall 12, an upper wall 13, and a lower wall 14. The internal space of the register body 10 is provided as an air passage 15. The downstream end of the air passage 15 is an air outlet 15a leading to the vehicle interior.

[0015] The air passage 15 of the register body 10 is provided with the outlet fins 20 and the upstream fin assembly 30. The outlet fins 20 are disposed near the outlet 15a, and the upstream fin assembly 30 is disposed away from the outlet 15a and further back than the outlet fins 20, i.e., upstream.

[0016] The outlet-side fins 20 are shaped like elongated plates extending in the left-right direction. The outlet-side fins 20 have rotation shafts 21 and 22 at their left and right ends, and these rotation shafts 21 and 22 are inserted into bearing holes (not shown) formed in the left and right walls 11 and 12 of the register body 10, so that the outlet-side fins 20 are supported rotatably about a rotation axis L1 (shown only in FIG. 2) extending in the left-right direction.

[0017] An operating knob 40 is attached to the blow-out side fin 20. By gripping this operating knob 40 and rotating the blow-out side fin 20 around the rotation axis L1, the blowing direction of the blow-out side fin 20 can be adjusted up or down.

[0018] The upstream fin assembly 30 has a plurality of, for example, five fins 31a to 31e (opening and closing plate portions) and an interlocking link 35 (shown only in phantom lines in FIG. 2) that rotatably connects these fins 31a to 31e. The fins 31a to 31e are each shaped like a long, narrow plate, with its shorter side oriented in the vertical direction, and are arranged at intervals in the horizontal direction. The rotation shafts 50 at the upper and lower ends of the multiple fins 31a to 31e are rotatably supported in bearing holes 13a and 14a formed respectively in the upper wall 13 and the lower wall 14. Of these fins 31a to 31e, the rotation axis of fin 31c is indicated by symbol L2 in FIG.

[0019] 2 extends in the left-right direction, and the connecting shafts 34 of the multiple fins 31a to 31e are rotatably connected to the connecting link 35. The connecting shafts 34 are parallel to the rotation shafts 50 and are disposed upstream (toward the rear) of the rotation shafts 50. The multiple fins 31a to 31e are linked together by the connecting link 35.

[0020] The operation knob 40 is supported by the blow-side fins 20 so as to be slidable in the left-right direction. An engagement member 41 protruding toward the upstream side is supported by the operation knob 40 so as to be swingable up and down, and this engagement member 41 has a slit 41a. Meanwhile, as shown in FIG. 4, the central fin 31c of the upstream fin assembly 30 has a pin 31x, which is inserted into the slit 41a of the engagement member 41. This pin 31x is positioned downstream of the rotation shaft 50 and is parallel to the rotation shaft 50. The central fin 31c has a notch adjacent to the pin 31x, which prevents interference between the engagement member 41 and the fin 31c.

[0021] When the operating knob 40 is slid left and right along the blow-side fins 20, the central fin 31c rotates about the rotation axis L2, and the other fins 31a, 31b, 31d, and 31e rotate simultaneously via the interlocking link 35 (Fig. 2). This allows the blowing direction of the upstream fin assembly 30 to be adjusted left and right.

[0022] Next, a structure for blocking the ventilation passage 15 by the upstream fin assembly 30 will be described. 4, on the upstream side of the upstream fin assembly 30, the inner surfaces of the upper wall 13 and the lower wall 14 are inclined toward the central axis of the ventilation passage 15 as they move from the upstream side to the downstream side, and then widen upward and downward, respectively. That is, the inner surfaces of the upper wall 13 and the lower wall 14 on the upstream side rise from the downstream side toward the ventilation passage 15, and a step surface 60 facing the air outlet 15a is formed.

[0023] As shown in Figures 2, 4, and 6, the step surface 60 extends in the left-right direction and has a relief concave curved surface 61 for receiving the rotation axis 50 of each fin 31a to 31e, as well as restriction surfaces 62a to 62e (step surfaces) extending to the right from these relief concave curved surfaces 61. Although only the relief concave curved surface 61 and the restriction surfaces 62a to 62e on the step surface 60 of the lower wall 14 are shown in the figure, the step surface 60 of the upper wall 13 also has the relief concave curved surface 61 and restriction surfaces 62a to 62e similar to those on the lower wall 14.

[0024] 2 and 5, extensions 70 (edges) that protrude toward the upper wall 13 and the lower wall 14 are formed on the upper and lower downstream ends of the fins 31a to 31e of the upstream fin assembly 30. These extensions 70 move toward and away from the restriction surfaces 62a to 62e of the step surface 60 as the fins 31a to 31e rotate.

[0025] As shown in Figure 2, the portion of the right side wall 12 of the register body 10 to the right of the pivot axis 50 of the fin 31e protrudes toward the ventilation passage 15, and the stepped surface facing downstream thereby extends in the vertical direction and serves as a receiving surface 81 that performs the function described below. The portion of the left side wall 11 of the register body 10 to the left of the pivot axis 50 of the fin 31a protrudes toward the ventilation passage 15, and the stepped surface facing upstream thereby extends in the vertical direction and serves as a receiving surface 85 that performs the function described below.

[0026] In the above configuration, when the operating knob 40 is operated to the right from the state shown in FIG. 2, the fins 31a to 31e tilt rightward, causing air from the air conditioner to be blown out to the right. When the operating knob 40 is further moved rightward, the fins 31a to 31e come into contact with one another in an overlapping state, as shown in Fig. 3. At this time, the rightmost fin 31e abuts against the receiving surface 81 of the right side wall 12, the leftmost fin 31a abuts against the receiving surface 85 of the left side wall 13, and the upper and lower extensions 70 of the fins 31a to 31e abut against the restricting surfaces 62a to 62e of the upper wall 13 and the lower wall 14. This blocks the ventilation passage 15.

[0027] In the register device 1, sawtooth notches 91, or so-called serrations, are formed on the edge of the step surface 60 of the bottom wall 14 of the register body 10 on the central axis side of the ventilation passage 15, as shown in Fig. 6. The notches 91 are formed over almost the entire area of ​​the bottom wall 14 in the left-right direction.

[0028] Each notch 91 extends toward the upstream side of the ventilation passage 15, and vertical grooves 92 are formed in the lower wall 14 on the upstream side of the step surface 60. As a result, a riblet portion 93, which is a collection of minute row-like protrusions, is defined in the lower wall 14.

[0029] In this embodiment, the riblet portion 93 is provided in a raised portion on the inner surface of the bottom wall 14, and the upstream end of the riblet portion 93 blends smoothly into the surface of the flat portion of the bottom wall 14. As shown in Figure 7, the cross section of the riblet portion 93 has a gently sloping trapezoidal shape. Each notch 91 also has a gently sloping trapezoidal shape.

[0030] Although not shown in this embodiment, a notch 91 is also formed on the edge of the step surface 60 of the upper wall 13, similar to the lower wall 14, and a vertical groove 92 is formed upstream of the notch 91 to set a riblet portion 93.

[0031] In the register device 1 configured as described above, the sawtooth notches 91 formed on the edges of the step surfaces 60 of the upper wall 13 and the lower wall 14 subdivide the vortices of air passing through the edges of the step surfaces 60, thereby suppressing the separation of large vortices. This reduces sudden pressure fluctuations, thereby reducing the generation of abnormal noise. Furthermore, the riblet portions 93 on the upstream side of the step surfaces 60 of the upper wall 13 and the lower wall 14 reduce the area where fast-flowing air hits the upper wall 13 and the lower wall 14, thereby easing resistance caused by vortices and reducing contact friction resistance, thereby reducing pressure loss. Furthermore, since the cross section of the riblet portion 93 is a gentle trapezoidal shape, contact friction resistance can be reduced even when the riblet portion 93 is angled from being parallel to the flow velocity direction.

[0032] The present invention is not limited to the above-described embodiment, and can be modified as appropriate within the scope of the invention. The notches 91 and the longitudinal grooves 92 may be formed in only one of the upper wall 13 and the lower wall 14 . A notch 91 and a vertical groove 92 may be formed in the protruding portion of the right side wall 12 where the receiving surface 81 is located and in the protruding portion of the left side wall 13 where the receiving surface 85 is located. The shape of the notch 91 may be rectangular, triangular, or other shapes. The row of protrusions that make up the riblet portion 93 may be plate-shaped protrusions, protrusions with a triangular cross section, protrusions with a rectangular end face, or protrusions of other shapes. In a register device of the type that blocks the ventilation path by a shutter (opening / closing plate portion) provided upstream of the upstream fin assembly, sawtooth notches may be formed on the edge of the step surface that the shutter hits when the ventilation path is blocked, and vertical grooves extending from these notches may be formed on the peripheral wall. In the above embodiment, the register device 1 has been described as having one blow-out side fin 20, but the register device may also have a plurality of fins as the blow-out side fin assembly and an interlocking link that rotatably connects these fins. [Industrial Applicability]

[0033] The present invention can be applied to a vehicle register device that includes an opening and closing plate portion that opens and closes a ventilation passage. [Explanation of symbols]

[0034] 1 register device, 10 register body, 11 left side wall (peripheral wall), 12 right side wall (peripheral wall), 13 upper wall (peripheral wall), 14 lower wall (peripheral wall), 13a, 14a bearing hole, 15 ventilation passage, 15a air outlet, 20 air outlet side fin, 21, 22 pivot shaft, 30 upstream side fin assembly, 31a, 31b, 31c, 31d, 31e fin (opening and closing plate portion), 34 connecting shaft, 35 interlocking link, 40 operation knob, 41 engaging member, 41a slit, 50 pivot shaft, 60 step surface, 61 relief concave curved surface, 62a, 62b, 62c, 62d, 62e regulating surface (step surface), 70 extension portion (edge ​​portion), 81, 85 receiving surface, 91 notch, 92 vertical groove, 93 Riblet section, L1, L2 rotation axis

Claims

1. A register device for a vehicle, comprising: a register body having a peripheral wall inside which forms a ventilation passage; and an opening / closing plate portion rotatably disposed inside the peripheral wall and configured to open and close the ventilation passage, a step surface is formed on the peripheral wall, the step surface coming into contact with an edge of the opening and closing plate portion when the opening and closing plate portion is closed; A register device for a vehicle, wherein a sawtooth notch is formed on an edge of the step surface on the central axis side of the ventilation passage.

2. 2. The vehicle register device according to claim 1, wherein the inner surface of the peripheral wall is formed with vertical grooves extending in the direction of extension of the ventilation passage from the respective notches at the edge of the stepped surface.

3. 3. The vehicle register device according to claim 2, wherein the cross section of the longitudinal groove is trapezoidal.

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