JP7447772B2 - vehicle shutter device - Google Patents

Description

The present disclosure relates to a vehicle shutter device.

In a vehicle, air introduced into the engine room through a grille opening is used for heat dissipation from a radiator through which engine cooling water flows and for heat dissipation from a condenser of a vehicle air conditioner. Some of these vehicles are equipped with a shutter device that can temporarily block the flow of air from the grille opening to the engine compartment. The shutter device enables early warm-up of the engine by temporarily blocking air from flowing into the engine room, for example, when the engine is cold started. Further, the shutter device improves the aerodynamic performance of the vehicle by temporarily blocking air from flowing into the engine compartment, for example, when the vehicle is running at high speed. As such a shutter device, for example, there is a shutter device described in Patent Document 1.

The shutter device described in Patent Document 1 includes a plurality of blades having rotating shafts at both ends, and a frame that rotatably supports the rotating shafts of each blade. Each blade opens and closes by rotating around its rotation axis. This shutter device allows air to pass through when the blades are open and blocks air flow through the frame when the blades are closed.

JP 2016-55719 Publication

In recent years, due to factors such as an increase in the number of devices installed in the engine room of a vehicle, the space within the engine room has been shrinking. Therefore, there is a demand for reducing the mounting space for vehicle shutter devices as well. In order to satisfy this requirement, the inventors are considering making the shutter device thinner.

On the other hand, when high-pressure cleaning liquid is sprayed onto the vehicle from the front or diagonally in front when cleaning the vehicle, the high-pressure cleaning liquid enters the engine compartment through the grille opening and collides with the blades of the shutter device, causing the blades to become damaged. External force may be applied. Furthermore, external force may be applied to the blade of the shutter device due to the wind generated when the vehicle is running entering the engine compartment through the grille opening. When the rigidity of the blade decreases as the shutter device becomes thinner, the blade tends to bend toward the rear of the vehicle due to external force applied to the blade. When the blade is bent and deformed, a portion of the blade supported by the frame may come off the frame, and the blade may fall off from the frame.

The present disclosure has been made in view of these circumstances, and an object thereof is to provide a vehicle shutter device that can suppress the blade from falling off from the frame.

A vehicle shutter device that solves the above problem is arranged to face a heat exchanger (5) through which air is introduced from a grille opening (2) of a vehicle (C), and the air flow in the heat exchanger is It is possible to change the state. The shutter device includes a frame (20), a plurality of blades (32), and a stopper section (24, 24a, 24b). The frame is formed into a frame shape, and air introduced from the grill opening flows through a space within the frame. The plurality of blades are arranged in a space within the frame, are rotatably supported by the frame, and open and close the space within the frame by rotational movement. The stopper portion is arranged to face each of the plurality of blades on the downstream side in the air flow direction. The blade includes a flat plate part (320) that opens and closes the space within the frame, and a cylindrical shaft part (324) provided in the middle part of the flat plate part and arranged to face the stopper part. , has. The stopper portion is formed with a plurality of insertion grooves arranged in a comb-like shape into which shaft portions of the plurality of blades are inserted.

According to this configuration, when the blade deforms toward the downstream side in the air flow direction due to a collision with the high-pressure cleaning liquid or a collision with the vehicle's running wind, the blade hits the stopper portion, thereby suppressing further deformation of the blade. be done. Therefore, the part of the blade supported by the frame becomes difficult to come off from the frame, so it is possible to suppress the blade from falling off from the frame.

Note that the above-mentioned means and the reference numerals in parentheses described in the claims are examples showing correspondences with specific means described in the embodiments to be described later.

According to the vehicle shutter device of the present disclosure, it is possible to suppress the blade from falling off from the frame.

FIG. 1 is a diagram schematically showing the general configuration of a vehicle. FIG. 2 is a perspective view showing the perspective structure of the shutter device of the first embodiment. FIG. 3 is a side view showing the side structure of the lower blade of the first embodiment. FIG. 4 is a cross-sectional view showing a cross-sectional structure around the engagement portion between the lower blade and the frame in the shutter device of the first embodiment. FIG. 5 is an enlarged view showing an enlarged structure around a connecting portion between a link member and a shaft in the shutter device of the first embodiment. FIG. 6 is a side view showing the side structure of the upper blade of the first embodiment. FIG. 7 is a perspective view showing the perspective structure of the stopper portion of the first embodiment. FIG. 8 is a perspective view showing a perspective structure around a portion of the stopper portion of the first embodiment into which the lower blade is inserted. FIG. 9 is a cross-sectional view showing the cross-sectional structure of a portion of the stopper portion of the first embodiment into which the lower blade is inserted. FIGS. 10A to 10C are cross-sectional views showing an example of the operation of the shutter device of the first embodiment. FIG. 11 is a cross-sectional view showing the cross-sectional structure of a portion of the stopper portion of the first modification of the first embodiment into which the lower blade is inserted. FIG. 12 is a cross-sectional view showing the cross-sectional structure of a portion of the stopper portion of the second modification of the first embodiment into which the lower blade is inserted. FIG. 13 is a cross-sectional view showing the cross-sectional structure of the lower blade and the stopper portion in the shutter device of the second modification of the first embodiment. FIG. 14 is a perspective view showing a perspective structure of a shutter device according to a third modification of the first embodiment. FIG. 15 is a cross-sectional view showing the cross-sectional structure of the lower blade and the stopper portion in the shutter device of the third modification of the first embodiment. FIG. 16 is a cross-sectional view showing a perspective cross-sectional structure of the engagement portion of the shaft portion and the stopper portion of the lower blade of the fourth modification of the first embodiment. FIG. 17 is a cross-sectional view showing the cross-sectional structure of the engagement portion of the shaft portion and the stopper portion of the lower blade of the fourth modification of the first embodiment. FIG. 18 is a cross-sectional view showing a perspective cross-sectional structure of a portion of the stopper portion of the second embodiment into which the lower blade is inserted. FIG. 19 is a cross-sectional view showing the cross-sectional structure of a portion of the stopper portion of the second embodiment into which the lower blade is inserted. FIG. 20 is a sectional view showing an example of the operation of the shutter device according to the second embodiment.

Hereinafter, embodiments of a vehicle shutter device will be described with reference to the drawings. In order to facilitate understanding of the description, the same components in each drawing are denoted by the same reference numerals as much as possible, and redundant description will be omitted.
<First embodiment>
First, a schematic configuration of a vehicle in which the shutter device of the first embodiment is mounted will be described.

As shown in FIG. 1, a grill opening 2 is provided at the front of a body 1 of a vehicle C. The grille opening 2 is provided to introduce air from the front of the vehicle body 1 into the engine compartment 3. In the engine room 3, in addition to the engine 4 of the vehicle C, a capacitor 5 and a radiator 6 are arranged. The condenser 5 is a component of the refrigeration cycle of the air conditioner installed in the vehicle C, and is capable of exchanging heat between the refrigerant circulating in the refrigeration cycle and the air introduced from the grill opening 2. Dissipates heat from the refrigerant. The radiator 6 radiates heat from the cooling water by exchanging heat between the cooling water that cools the engine 4 and the air introduced from the grill opening 2 . A condenser 5 and a radiator 6 are arranged between the grill opening 2 and the engine 4. The capacitor 5 is located further forward of the vehicle than the radiator 6. In this embodiment, the capacitor 5 corresponds to a heat exchanger.

A shutter device 10 is disposed in front of the condenser 5 so as to face it. The shutter device 10 can change the flow state of air in the condenser 5, radiator 6, and engine room 3. Specifically, the shutter device 10 has two states: an open state in which air introduced from the grille opening 2 flows to the condenser 5, radiator 6, and engine room 3, and a closed state in which air flow to these is blocked. It is configured so that it can be switched to. The shutter device 10 enables early warm-up of the engine 4 by being in a closed state, for example, when the engine 4 is cold-started. Further, the shutter device 10 improves the aerodynamic performance of the vehicle C by being in an open state, for example, when the vehicle C is running at high speed.

Next, a specific structure of the shutter device 10 will be explained.
As shown in FIG. 2, the shutter device 10 includes a frame 20, a plurality of blades 30, and an actuator device 40.

The frame 20 has a frame main body 21 formed in a rectangular frame shape, and a vertical frame reinforcing part 22 and a horizontal frame reinforcing part 23 arranged in a cross shape within the frame of the frame main body 21.
The frame main body portion 21 has an upper frame piece 210, a lower frame piece 211, a left frame piece 212, and a right frame piece 213. Air introduced from the grill opening 2 shown in FIG. 1 flows into the space within the frame body portion 21 .

Hereinafter, the longitudinal direction of the upper frame piece 210 and the lower frame piece 211 will also be referred to as the X-axis direction, and the longitudinal direction of the left frame piece 212 and the right frame piece 213 will also be referred to as the Z-axis direction. Further, the Z1 direction, which is one direction in the Z-axis direction, is referred to as "upward," and the Z2 direction, which is the other direction in the Z-axis direction, is referred to as "downward." Furthermore, the direction perpendicular to both the X-axis direction and the Z-axis direction is also referred to as the Y-axis direction. Since the Y-axis direction also corresponds to the air flow direction, the Y-axis direction will also be referred to as "air flow direction Y" below.

The vertical frame reinforcing section 22 is provided to reinforce the frame main body section 21. The horizontal frame reinforcing section 23 is provided to reinforce the frame main body section 21 and to hold the blade 30. The vertical frame reinforcing section 22 is provided so as to bridge between the intermediate portion of the upper frame piece 210 and the intermediate portion of the lower frame piece 211 of the frame main body section 21. The horizontal frame reinforcing portion 23 is provided so as to bridge between the intermediate portion of the right frame piece 213 and the intermediate portion of the left frame piece 212 of the frame main body portion 21. The vertical frame reinforcing section 22 and the horizontal frame reinforcing section 23 divide the space within the frame of the frame main body section 21 into four regions.

The plurality of blades 30 are arranged in four areas within the frame 20, respectively. In the four areas within the frame 20, the plurality of blades 30 are arranged so that their longitudinal direction is in the Z-axis direction, and are arranged side by side in the X-axis direction. Hereinafter, for convenience, among the plurality of blades 30 shown in FIG. 2, the blade 30 disposed between the upper frame piece 210 of the frame main body part 21 and the horizontal frame reinforcement part 23 will be referred to as "upper blade 31", The blade 30 disposed between the lower frame piece 211 and the horizontal frame reinforcing portion 23 is referred to as a "lower blade 32."

As shown in FIG. 3, the lower blade 32 includes a flat plate part 320 that opens and closes the space within the frame 20, a rotating shaft 321 and a power transmission shaft 322 formed at the upper end of the flat plate part 320. and an engaging portion 323 formed at the lower end of the flat plate portion 320.
A concave insertion hole 323a is formed in the engaging portion 323 so as to extend upward from the bottom surface thereof. As shown in FIG. 4, the protrusion 211a formed on the lower frame piece 211 is inserted into the insertion hole 323a of the engagement portion 323 and engaged. The lower end portion of the lower blade 32 is rotatably supported by the lower frame piece 211 due to the engagement structure consisting of the protrusion 211a of the lower frame piece 211 and the insertion hole 323a of the lower blade 32.

The rotating shaft 321 and the power transmission shaft 322 shown in FIG. 3 are arranged to face the horizontal frame reinforcement part 23. Specifically, the rotating shaft 321 is rotatably supported by being inserted into a groove formed in the horizontal frame reinforcing portion 23. Further, as shown in FIG. 5, a link member 80 is assembled to the horizontal frame reinforcing portion 23. The link member 80 is formed to extend in the X-axis direction. A power transmission shaft 322 formed at the upper end of the lower blade 32 is connected to a link member 80.

As shown in FIG. 6, the upper blade 31 has substantially the same structure as the lower blade 32. That is, the upper blade 31 has a flat plate part 310, a rotating shaft 311 and a power transmission shaft 312 provided at the lower end of the flat plate part 310, and an engaging part 313 provided at the upper end of the flat plate part 310. . The upper end of the upper blade 31 is rotatably supported by the upper frame piece 210 by engagement between the insertion hole 313a formed in the engagement part 313 and the protrusion formed in the upper frame piece 210. As shown in FIG. 5, the rotation shaft 311 of the upper blade 31 is rotatably supported by being inserted into a groove formed in the horizontal frame reinforcement part 23. The power transmission shaft 312 of the upper blade 31 is connected to the link member 80.

As shown in FIG. 5, a shaft 70 is arranged on the right side frame piece 213 of the frame main body part 21 so as to extend upward from a connection part with the horizontal frame reinforcement part 23. As shown in FIG. The upper end of the shaft 70 is connected to the actuator device 40 shown in FIG. Note that illustration of the link member 80 and the shaft 70 is omitted in FIG. 2 .

The actuator device 40 is fixed to the upper surface of one end of the upper frame piece 210 with a screw or the like. The actuator device 40 rotates the shaft 70 based on the supply of electric power. As the link member 80 is displaced relative to the horizontal frame reinforcing portion 23 in the X-axis direction based on the rotation of the shaft 70, the power transmission shafts 312, 322 of the upper blade 31 and the lower blade 32 are transferred from the link member 80 to the respective power transmission shafts 312, 322 of the upper blade 31 and the lower blade 32. An external force in the X-axis direction is applied to. As a result, a rotational force is applied to the upper blade 31 and the lower blade 32, and the upper blade 31 and the lower blade 32 rotate. The space within the frame of the frame body 21 is opened and closed by the rotation of the upper blade 31 and the lower blade 32.

Specifically, when the plurality of blades 30 are in the open state, a gap is formed between each blade 30, so air flows from the grill opening 2 to the condenser 5, radiator 6, and engine compartment 3 through the gap. It is possible to flow in. When the plurality of blades 30 are in the closed state, the gaps between the blades 30 are closed, thereby blocking the flow of air from the grill opening 2 to the condenser 5, radiator 6, and engine compartment 3.

By the way, in the shutter device 10 of the present embodiment, the thickness of each of the upper blade 31 and the lower blade 32 has become thinner as the shutter device 10 has become thinner, so that the rigidity of each blade 31 and 32 has become lower. In particular, as shown in FIG. 2, since the overall length of the lower blade 32 is longer than the upper blade 31, the rigidity of the lower blade 32 is significantly reduced. In the shutter device 10, for example, when high-pressure cleaning liquid enters the engine room 3 from the grille opening 2 when cleaning the vehicle C, or when the running wind generated when the vehicle C is running is directed toward the engine room 3 from the grille opening 2. As a result, an external force is applied to the lower blade 32 in the downstream direction in the air flow direction Y. This external force may cause the lower blade 32, which has low rigidity, to deform toward the downstream side in the air flow direction Y. Specifically, the lower blade 32 may be deformed so as to curve toward the downstream side in the air flow direction Y from the both ends supported by the frame 20 as a base point. When such deformation occurs in the lower blade 32, the engaging portion 323 of the lower blade 32 shown in FIG. There is a risk of it falling off.

Therefore, in the shutter device 10 of this embodiment, a stopper part 24 is formed on the frame 20 as shown in FIG. This prevents the lower blade 32 from falling off.
Next, the structure of the lower blade 32 and the frame 20 for suppressing falling off from the frame 20 will be described in detail.

As shown in FIG. 2, the frame 20 of this embodiment is provided with a stopper part 24 so as to cross the center part between the lower frame piece 211 of the frame main body part 21 and the horizontal frame reinforcing part 23. There is. The stopper part 24 is made of a rod-shaped member formed to extend in the X-axis direction, and is configured to bridge between the middle part of the right frame piece 213 of the frame main body part 21 and the middle part of the vertical frame reinforcing part 22. , and is provided so as to bridge between the intermediate portion of the left frame piece 212 of the frame main body portion 21 and the intermediate portion of the vertical frame reinforcing portion 22 . As shown in FIG. 7, a plurality of insertion grooves 240 are formed in the stopper portion 24 at predetermined intervals in the longitudinal direction thereof in a comb-teeth shape. The insertion groove 240 is formed as a semicircular concave groove that opens toward the upstream side in the air flow direction Y.

As shown in FIG. 3, a cylindrical shaft portion 324 is formed in the center of the flat plate portion 310 of the lower blade 32. As shown in FIG. When the lower blade 32 is assembled to the frame 20, the shaft portion 324 of the lower blade 32 is placed in a position facing the stopper portion 24, as shown in FIG. The shaft portion 324 of the lower blade 32 is inserted into the insertion groove 240 from the opening portion of the insertion groove 240 on the upstream side in the air flow direction Y. As shown in FIG. 9, the stopper portion 24 is arranged so as not to come into contact with the shaft portions 324 of the plurality of lower blades 32.

Note that the depth of the insertion groove 240 of the stopper part 24 is "R", the radius of the shaft part 324 of the lower blade 32 is "r", and the insertion groove 240 of the stopper part 24 and the lower blade are connected in the air flow direction Y. When the length of the gap formed between the shaft portion 324 of 32 and the shaft portion 324 is “a”, they satisfy the relationship of the following formula f1.

R≧r+a (f1)
Next, an example of the operation of the shutter device 10 of this embodiment will be described.
Assume that the lower blade 32 is deformed toward the downstream side in the air flow direction Y due to the high-pressure cleaning liquid colliding with the lower blade 32 or the traveling wind of the vehicle C colliding with the lower blade 32. At this time, as shown in FIG. 10(A), when the shaft portion 324 of the lower blade 32 comes into contact with the inner wall surface of the insertion groove 240 of the stopper portion 24, further deformation of the lower blade 32 is suppressed. .

Similarly, even if the lower blade 32 is deformed diagonally toward the downstream side in the air flow direction Y, as shown in FIGS. collides with the inner wall surface of the insertion groove 240 of the stopper portion 24, thereby suppressing further deformation of the lower blade 32.

As shown in FIGS. 10A to 10C, the deformation of the lower blade 32 is suppressed by the collision of the shaft portion 324 of the lower blade 32 with the stopper portion 24, so that the lower blade 32 is The engaging portion 323 becomes difficult to come off from the protruding portion 211a of the lower frame piece 211. Therefore, falling of the lower blade 32 from the frame 20 can be avoided.

According to the shutter device 10 of the present embodiment described above, the functions and effects shown in (1) to (7) below can be obtained.
(1) The shutter device 10 includes a stopper portion 24 arranged to face each of the plurality of lower blades 32 toward the downstream side in the air flow direction Y. According to this configuration, when the lower blade 32 deforms toward the downstream side in the air flow direction Y, the lower blade 32 hits the stopper portion 24, thereby suppressing further deformation of the lower blade 32. . This makes it difficult for the engaging portion 323, which is the portion of the lower blade 32 supported by the lower frame piece 211, to come off from the protrusion 211a of the lower frame piece 211, so that the lower blade 32 is removed from the frame 20. Falling off can be suppressed.

(2) As shown in FIG. 9, the stopper part 24 is arranged so as not to contact the shaft part 324 of each of the plurality of lower blades 32 when the lower blade 32 is in an undeformed state. ing. According to this configuration, when the lower blade 32 is not deformed, the lower blade 32 and the stopper portion 24 do not interfere with each other, so that the lower blade 32 can be rotated more appropriately. Therefore, the opening and closing operations of the shutter device 10 can be performed appropriately.

(3) The stopper portion 24 is arranged to face the central portion of each of the plurality of lower blades 32 on the downstream side in the air flow direction Y. According to this configuration, deformation of the portion of the lower blade 32 where the amount of deformation is the largest can be suppressed by the stopper portion 24, so that deformation of the lower blade 32 can be suppressed more accurately. As a result, it is possible to more accurately prevent the lower blade 32 from falling off from the frame 20.

(4) The stopper portion 24 is integrally formed with the frame 20. According to this configuration, an increase in the number of parts can be avoided compared to the case where the stopper part 24 is formed of a member different from the frame 20.
(5) The lower blade 32 includes a flat plate portion 320 that opens and closes a space within the frame 20, and a cylindrical shaft portion 324 provided at the center of the flat plate portion 320. The shaft portion 324 is arranged to face the stopper portion 24. According to this configuration, even if the shaft portion 324 of the lower blade 32 hits the stopper portion 24 due to deformation of the lower blade 32, the shaft portion 324 of the lower blade 32 does not touch the stopper portion 24. Easy to rotate. Therefore, it becomes easier to ensure the rotational movement of the lower blade 32.

(6) The stopper portion 24 is formed with an insertion groove 240 into which the shaft portion 324 of the lower blade 32 can be inserted from the upstream side in the air flow direction Y. According to this configuration, even if the lower blade 32 is deformed diagonally toward the downstream side in the air flow direction Y, the axis of the lower blade 32 is As the portion 324 collides with the inner wall surface of the stopper portion 24, deformation of the lower blade 32 is suppressed. As a result, it is possible to more accurately prevent the lower blade 32 from falling off from the frame 20.

(7) In the stopper portion 24, a plurality of insertion grooves 240 are arranged in a comb-like shape. According to this configuration, the stopper portion 24 that can suppress deformation of the plurality of lower blades 32 can be easily realized.
(First modification)
Next, a first modification of the shutter device 10 of the first embodiment will be described.

As shown in FIG. 11, the stopper part 24 of this modification is arranged so as to contact the shaft part 324 of each of the plurality of lower blades 32 when the lower blade 32 is in an undeformed state. has been done. According to this configuration, deformation of the lower blade 32 can be suppressed more accurately, so that falling off of the lower blade 32 from the frame 20 can be further suppressed.

(Second modification)
Next, a second modification of the shutter device 10 of the first embodiment will be described.
The shape of the insertion groove 240 formed in the stopper portion 24 can be changed as appropriate. For example, as shown in FIG. 12, the insertion groove 240 may be formed in a U-shape. In this modification, as shown in FIG. 13, the length between the horizontal frame reinforcement part 23 and the stopper part 24 in the Z-axis direction is set to "L11", and the length between the stopper part 24 and the lower frame piece 211 is set to "L11". When the length between them is "L12", the stopper part 24 is arranged at a position where the respective lengths L11 and L12 are equal.

(Third modification)
Next, a third modification of the shutter device 10 of the first embodiment will be described.
As shown in FIG. 14, the frame 20 of this modification is provided with two stopper parts 24a and 24b. Each stopper part 24a, 24b has the same structure as the stopper part 24 of the first modification. The stopper parts 24a and 24b are arranged at equal intervals in the Z-axis direction between the lower frame piece 211 of the frame main body part 21 and the horizontal frame reinforcement part 23.

Specifically, as shown in FIG. 15, the length between the horizontal frame reinforcement part 23 and the stopper part 24a in the Z-axis direction is "L21", and the length between each stopper part 24a and 24b is defined as "L21". When "L22" and the length between the stopper part 24b and the lower frame piece 211 are "L23", the stopper parts 24a and 24b are arranged at positions where the respective lengths L21 to L23 are equal. That is, the stopper parts 24a and 24b are arranged so as to equally divide the space between the horizontal frame reinforcing part 23 and the lower frame piece 211. In this modification, the horizontal frame reinforcement portion 23 corresponds to the first frame piece, and the lower frame piece 211 corresponds to the second frame piece.

According to this configuration, since the plurality of stopper parts 24a and 24b suppress deformation of the lower blade 32, deformation of the lower blade 32 can be suppressed more accurately. As a result, falling of the lower blade 32 from the frame 20 can be further suppressed.
(Fourth modification)
Next, a fourth modification of the shutter device 10 of the first embodiment will be described.

As shown in FIGS. 16 and 17, the stopper section 24 of this modification includes a stopper main body section 241 and a retaining section 242. As shown in FIGS.
The stopper main body portion 241 is a portion in which a plurality of insertion grooves 240 are arranged in a comb-teeth shape.

The retaining portion 242 is integrally formed with the stopper body portion 241 and is a portion that prevents the shaft portion 324 of the lower blade 32 inserted into the insertion groove 240 from coming off. Specifically, the retaining portion 242 has a pair of extending portions 242a and 242b extending from the stopper body portion 241 toward the upstream side in the air flow direction Y along each of both sides of the shaft portion 324. . The pair of extending portions 242a and 242b are arranged so as to face each other with the shaft portion 324 in between in the X-axis direction. The respective tip ends of the pair of extension parts 242a and 242b face the shaft part 324 on the upstream side in the air flow direction Y. The tip portions of the pair of extension portions 242a and 242b face the shaft portion 324 on the upstream side in the air flow direction Y, thereby preventing the shaft portion 324 inserted into the insertion groove 240 from coming off.

In this stopper section 24, the shaft section 324 of the lower blade 32 is inserted through an opening formed between the respective tip ends of the extension sections 242a and 242b. Specifically, when the shaft portion 324 of the lower blade 32 is pushed into the opening formed between the respective tips of the extending portions 242a, 242b, the extending portions 242a, 242b are elastically deformed, and the lower blade 32 The shaft portion 324 of is inserted into the insertion groove 240.

According to this configuration, the shaft portion 324 of the lower blade 32 is difficult to come off from the insertion groove 240 of the stopper portion 24, so that falling off of the lower blade 32 from the frame 20 can be more accurately suppressed.
<Second embodiment>
Next, a shutter device 10 according to a second embodiment will be described. Hereinafter, differences from the shutter device 10 of the first embodiment will be mainly explained.

As shown in FIGS. 18 and 19, the shaft portion 324 of the lower blade 32 of this embodiment is formed between the lower end portion of the flat plate portion 320 and the engaging portion 323. The stopper portion 24 is disposed slightly above the lower frame piece 211 of the frame main body portion 21 and faces the shaft portion 324 of each of the plurality of lower blades 32. The stopper part 24 of this embodiment has a plurality of insertion grooves 240 arranged in a comb-teeth shape, similarly to the stopper part 24 of the first embodiment. Each shaft portion 324 of the plurality of lower blades 32 is inserted into each insertion groove 240 .

Next, an example of the operation of the shutter device 10 of this embodiment will be described.
Assume that the lower blade 32 is deformed toward the downstream side in the air flow direction Y due to the high-pressure cleaning liquid colliding with the lower blade 32 or the traveling wind of the vehicle C colliding with the lower blade 32. At this time, when the shaft portion 324 of the lower blade 32 comes into contact with the inner wall surface of the insertion groove 240 of the stopper portion 24 as shown in FIG. 20, further deformation of the lower blade 32 is suppressed. In the shutter device 10 of the present embodiment, as shown in FIG. Compared to this, the amount of displacement of the engaging portion 323 when the lower blade 32 is deformed is smaller. Therefore, the engaging portion 323 of the lower blade 32 becomes more difficult to come off from the protruding portion 211a of the lower frame piece 211.

According to the shutter device 10 of this embodiment described above, the operation and effect shown in (8) below can be obtained.
(8) The stopper part 24 is arranged so as to face each end of the plurality of lower blades 32 on the downstream side in the air flow direction Y. According to this configuration, the engaging portion 323 of the lower blade 32 becomes more difficult to come off from the protruding portion 211a of the lower frame piece 211, so that it is possible to more accurately prevent the lower blade 32 from falling off from the frame 20. can.

<Other embodiments>
Note that each embodiment can also be implemented in the following forms.
- In the shutter device 10 of the first embodiment, the stopper portion 24 is not limited to the central portion of the flat plate portion 310, but may be disposed to face a portion offset from the central portion of the flat plate portion 310. In short, the stopper portion 24 may be disposed so as to face the intermediate portion of each of the plurality of lower blades 32 on the downstream side in the air flow direction Y.

- In the shutter device 10 of each embodiment, the shaft part 324 does not need to be formed in the lower blade 32. In this case, the stopper part 24 will be arranged so as to face the flat plate part 320 of the lower blade 32.
- In the shutter device 10 of each embodiment, the stopper part 24 may be arranged not only to face the lower blade 32 but also to face the upper blade 31.

- The stopper part 24 of each embodiment may be formed separately from the frame 20. According to this configuration, the stopper portion 24 can be provided afterward on the frame 20, so that convenience can be improved.
- The shutter device 10 of each embodiment may be arranged between the capacitor 5 and the radiator 6. Further, the shutter device 10 of each embodiment may be arranged on the rear side of the vehicle with respect to the radiator 6.

- The present disclosure is not limited to the above specific examples. Design changes made by those skilled in the art to the specific examples described above are also included within the scope of the present disclosure as long as they have the characteristics of the present disclosure. The elements included in each of the specific examples described above, as well as their arrangement, conditions, shapes, etc., are not limited to those illustrated, and can be changed as appropriate. The elements included in each of the specific examples described above can be appropriately combined as long as no technical contradiction occurs.

C: Vehicle 2: Grill opening 5: Condenser (heat exchanger)
10: Shutter device 20: Frame 23: Lateral frame reinforcement part (first frame piece)
24: Stopper part 32: Lower blade 211: Lower frame piece (second frame piece)
240: Insertion groove 320: Flat plate part 324: Shaft part

Claims (11)

The vehicle is arranged to face a heat exchanger (5) through which air is introduced from the grille opening (2) of the vehicle (C), and is capable of changing the flow state of the air in the heat exchanger. A shutter device,
a frame (20) formed in a frame shape, and through which air introduced from the grille opening flows through a space within the frame;
a plurality of blades (32) arranged in a space within the frame, rotatably supported by the frame, and opening and closing the space within the frame by rotational movement;
A stopper part (24, 24a, 24b) arranged to face each of the plurality of blades on the downstream side in the air flow direction,
The blade is
a flat plate portion (320) that becomes a portion that opens and closes a space within the frame;
a cylindrical shaft part (324) provided in the middle part of the flat plate part and arranged to face the stopper part,
The stopper portion is provided with a plurality of insertion grooves arranged in a comb-like shape into which the shaft portions of the plurality of blades are inserted. The vehicle shutter device according to claim 1, wherein the stopper portion is arranged so as not to come into contact with each of the plurality of blades. The vehicle shutter device according to claim 1, wherein the stopper portion is arranged to contact each of the plurality of blades. The vehicle shutter device according to any one of claims 1 to 3, wherein the stopper portion is arranged to face a central portion of each of the plurality of blades on a downstream side in an air flow direction. The vehicle shutter device according to claim 4, comprising a plurality of said stopper parts. The frame includes a first frame piece (23) that supports one end of the plurality of blades, and a second frame piece (211) that supports the other end of the plurality of blades,
The vehicle shutter device according to claim 5, wherein the plurality of stopper portions are arranged to equally divide the space between the first frame piece and the second frame piece. The shutter device for a vehicle according to any one of claims 1 to 3, wherein the stopper portion is disposed so as to face the end portions of each of the plurality of blades on the downstream side in the air flow direction. The vehicle shutter device according to any one of claims 1 to 7, wherein the stopper portion is integrally formed with the frame. The vehicle shutter device according to any one of claims 1 to 7, wherein the stopper portion is formed separately from the frame. The stopper portion is
a stopper main body portion (241) in which a plurality of the insertion grooves are formed;
According to any one of claims 1 to 9, further comprising a retaining portion (242) that is integrally formed with the stopper main body portion and prevents the shaft portion inserted into the insertion groove from coming off. Shutter device for the vehicle described. The retaining portion has a pair of extending portions (242a, 242b) extending from the stopper main body portion toward the upstream side in the air flow direction along each of both sides of the shaft portion,
The pair of extension portions each have a tip portion facing upstream in the air flow direction with respect to the shaft portion,
The vehicle shutter device according to claim 10, wherein the shaft portion inserted into the insertion groove is prevented from coming off by a tip end portion of each of the pair of extension portions.

Images