JP6297806B2 - Ventilation structure at the rear of the vehicle body - Google Patents

Description

  The present invention forms a ventilation port in the rear part of the vehicle body that allows the passenger compartment inside the vehicle body and the exterior of the vehicle body to communicate with each other so that ventilation of the passenger compartment is achieved through the ventilation port, while noise outside the vehicle body is The present invention relates to a ventilation structure in the rear part of a vehicle body for preventing the vehicle from reaching the passenger compartment through the mouth.

  Conventionally, there is an automobile which is a vehicle as disclosed in Patent Document 1 below. According to this publication, the interior space of the vehicle body is a vehicle compartment, and a door opening that communicates the inside and outside of the vehicle compartment is formed on the side wall and the rear wall of the vehicle body. A door that can be opened and closed is provided. In addition, an air conditioner that allows air-conditioning air such as warm air and cold air to be blown toward the rear of the passenger compartment is provided at the front end of the passenger compartment. Further, a ventilation port for communicating the inside and outside of the rear portion of the vehicle compartment is formed in the rear portion of the vehicle body.

  In the above configuration, when the door is opened / closed with respect to the door opening, the air pressure in the passenger compartment tends to fluctuate in conjunction with the door opening / closing operation. However, at this time, a part of the air in the passenger compartment flows through the ventilation opening to ventilate the passenger compartment, thereby suppressing fluctuations in the air pressure of the passenger compartment during the door opening and closing operation. For this reason, the door opening / closing operation is prevented from being obstructed by the air pressure in the passenger compartment, so that a good operation feeling for the door opening / closing operation is ensured and a good ride comfort to the vehicle is ensured. The

  On the other hand, a part of the air-conditioning air blown from the air conditioner at the front end of the passenger compartment toward the rear of the passenger compartment flows to the rear outside area of the rear part of the vehicle body through a part of the ventilation port. As a result, the passenger compartment is ventilated. For this reason, the air for air conditioning is smoothly blown to the rear part of the passenger compartment, so that more uniform air conditioning is achieved in each part of the passenger compartment. Comfort is secured.

JP-A-2005-75082

  By the way, in the automobile having the above-described configuration, it is intended to improve the ventilation effect of the passenger compartment for the purpose of improving the operational feeling during the door opening / closing operation and making the air conditioning of each part of the passenger compartment more uniform. In such a case, it is conceivable to increase the opening area of the ventilation port and promote the flow of air at the ventilation port to achieve more effective ventilation of the passenger compartment.

  However, simply increasing the opening area of the ventilation port as described above may cause noise outside the vehicle body to reach the passenger compartment through the ventilation port without being significantly attenuated. It is a cause of lowering and is not preferable.

  The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to effectively achieve ventilation of the passenger compartment inside the vehicle body in the vehicle, while noise outside the vehicle body is reduced. It is to be effectively suppressed from reaching the passenger compartment.

The invention of claim 1 is a lower back panel 11 that extends in the width direction of the vehicle body 2, and that each cross section in the longitudinal direction forms a hollow closed cross-sectional structure and forms the rear lower portion of the vehicle body 2, and an internal space of the vehicle body 2 A rear floor panel 12 that forms a rear lower surface of the passenger compartment 5 and a rear edge thereof is coupled to the lower back panel 11 and a center portion of the rear floor panel 12 in the width direction of the vehicle body 2. A rear panel of the vehicle body formed by an inner panel 16 constituting the front portion of the lower back panel 11, and a recess panel 31 that closes the upper end opening of the recess 31. In
So as to communicate with each other and the casing 5 and the recess 31, the first vent 39 formed on both sides in the width direction of the vehicle body 2 in the closure panel 33, in the width direction of the vehicle body 2 in the recess 31 so as to communicate with each other and an inner space 18 of the middle portion and the lower back panel 11, a second vent 40 formed on the inner panel 16, the rear outer areas of the interior space 18 and the vehicle body 2 of the lower back panel 11 In the width direction of the vehicle body 2 in the outer panel 17 of the lower back panel 11 at a position where it does not wrap with the second ventilation port 40 in the vehicle rear view so as to communicate with each other. for example Bei the door,
The vehicle is characterized in that the first ventilation port 39 is formed in a cutout shape at the side edge portion of the closing panel 33 as a handle for opening and closing the upper end opening of the recess 31. It is the ventilation structure in the vehicle body rear part.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, there is provided a lower back panel that extends in the width direction of the vehicle body, and that each cross section in the longitudinal direction forms a hollow closed cross-sectional structure and constitutes the rear lower portion of the vehicle body, and A rear floor panel having a lower surface and a rear end edge coupled to the lower back panel; a recess formed in a central portion of the rear floor panel in the width direction of the vehicle body; and opening upward; A rear panel of the vehicle that includes a closing panel that closes an upper end opening, and the rear end surface of the recess is formed by an inner panel that constitutes a front portion of the lower back panel
So as to communicate with each other and the casing and the recess, and the first ventilation port formed on both sides in the width direction of the vehicle body in the closure panel, middle part and the lower back panel in the width direction of the vehicle body in the recess The second ventilation port formed in the inner panel and the inner space of the lower back panel and the rear outer area of the vehicle body communicate with each other so as to communicate with each other . A third ventilation port formed on both sides in the width direction of the vehicle body in the outer panel of the lower back panel at a position where it does not wrap with the ventilation port ;
The first ventilation port is formed in a cutout shape at the side edge of the closing panel as a handle for opening and closing the upper end opening of the recess.

  For this reason, when the air pressure in the passenger compartment increases and fluctuates for some reason, a part of the air in the passenger compartment has the first ventilation port of the closed panel that closes the concave portion, the concave portion that is closed by the closed panel, The passenger compartment is ventilated by sequentially flowing through the two ventilation openings, the inner space of the lower back panel, and the third ventilation opening. Therefore, the fluctuation | variation of the air pressure of the said compartment is suppressed and the favorable riding comfort to a vehicle is ensured.

  On the other hand, according to the vehicle having the above configuration, noise outside the vehicle body reaches the passenger compartment through the third ventilation port, the inner space of the lower back panel, the second ventilation port, the recess, and the first ventilation port in order. try to.

  However, as described above, the third ventilation port is formed in the side portion of the lower back panel, the second ventilation port is formed in the middle part in the width direction of the vehicle body in the recess, and the recess is the center in the width direction of the vehicle body The first ventilation port is formed on the side of the closing panel that closes the upper end opening of the recess.

  For this reason, the sound wave of the noise that goes from the outside of the vehicle body toward the passenger compartment through the third ventilation port, the inner space of the lower back panel, the second ventilation port, the recess, and the first ventilation port is made to progress in a zigzag manner. . Therefore, in the course of this progress, the sound waves are reflected in all directions and interfere with each other, thereby consuming energy. As a result, it is effectively suppressed that noise outside the vehicle body reaches the passenger compartment. In addition, when noise outside the vehicle body enters the recess through the second ventilation port, the recess having a sufficiently large cross-sectional area compared to the opening area of the second ventilation port and having a large volume is a so-called expansion. Since it works as a mold silencer, it is more effectively suppressed that noise outside the vehicle body reaches the passenger compartment. Therefore, a favorable ride comfort to the vehicle is ensured more reliably.

  As a result of the above, when trying to improve the ventilation effect of the passenger compartment, it is effective that noise outside the vehicle body reaches the passenger compartment even if the opening areas of the first to third ventilation openings are increased to some extent. Is suppressed.

It is a partial perspective developed view of the rear part of the vehicle body. 1 is an overall side view of a vehicle body. FIG. 3 is a partial enlarged partial sectional view of FIG. 2.

  The present invention relates to a ventilation structure in the rear part of a vehicle body, in which it is possible to effectively achieve ventilation of a passenger compartment inside the vehicle body in the vehicle, while effectively suppressing noise outside the vehicle body from reaching the passenger compartment. In order to realize the object of the present invention, the form for carrying out the present invention is as follows.

  That is, the rear portion of the vehicle body extends in the width direction of the vehicle body, and a cross-section of each longitudinal portion forms a hollow closed cross-sectional structure to form a rear lower portion of the vehicle body, and a vehicle interior that is an interior space of the vehicle body. A rear floor panel that forms a rear lower surface and a rear edge of the rear floor panel is coupled to the lower back panel, a concave portion that is formed in a center portion of the rear floor panel in the width direction of the vehicle body and opens upward, and the concave portion And a closing panel that closes the upper end opening. The rear end surface of the recess is formed by an inner panel that constitutes the front portion of the lower bag panel.

  Further, the ventilation structure in the rear part of the vehicle body is a first ventilation formed on at least one side part of both sides in the width direction of the vehicle body in the closed panel so as to allow the vehicle compartment and the recess to communicate with each other. A second ventilation port formed in the inner panel, and an inner space of the lower back panel and the vehicle body so as to communicate the opening, a midway portion of the recess in the width direction of the vehicle body, and the inner space of the lower back panel. The lower back panel includes a third ventilation port formed on at least one side of both sides of the lower back panel in the vehicle width direction so as to communicate with each other.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1. The left and right described below refer to the width direction of the vehicle body 2 of the vehicle 1 toward the front.

  The vehicle 1 includes the vehicle body 2 and a pair of left and right front and rear wheels 4 that are suspended from the vehicle body 2 and support the vehicle body 2 on a running surface 3. The vehicle body 2 is made of sheet metal, and its interior space is a cabin 5. The vehicle body 2 and the vehicle compartment 5 are symmetric with respect to the center line in the width direction of the vehicle body 2.

  The vehicle body 2 includes a left and right side wall 8 that forms the side surface of the passenger compartment 5, a rear wall 9 that forms the rear surface of the passenger compartment 5, a roof panel 10 that forms the upper surface of the passenger compartment 5, and the width of the vehicle body 2. The lower back panel 11 that extends in the direction and forms the lower rear edge of the vehicle body 2 and the lower edge of the rear wall 9 and the rear lower surface of the passenger compartment 5 are formed, and the rear edge is formed on the front surface of the lower back panel 11. And a rear floor panel 12 to be joined.

  The lower back panel 11 constitutes a skeletal member of the vehicle body 2 with each section in the longitudinal direction forming a hollow closed section structure. Specifically, the lower back panel 11 includes an inner panel 16 that constitutes a front surface portion thereof, and an outer panel 17 that constitutes a rear surface portion thereof. The inner and outer panels 16 and 17 are joined to each other at their upper edge portions and lower edge portions, so that an inner space 18 extending in the width direction of the vehicle body 2 is formed between the inner and outer panels 16 and 17. Is done.

  The side wall 8 is formed with rear side door openings 21 and 22 before the inside and outside of the passenger compartment 5 communicate with each other, and the door openings 21 and 22 can be opened and closed from the outside of the vehicle body 2 before and after the rear side. Doors 23 and 24 are provided. The rear wall 9 is provided with a back door opening 26 that allows the inside and outside of the vehicle compartment 5 to communicate with each other, and a back door 27 that allows the door opening 26 to be opened and closed from the outside of the vehicle body 2.

  A concave portion 31 that opens upward is formed at the center of the rear floor panel 12 in the width direction of the vehicle body 2. The spare tire 32 for the wheel 4 can be stored in the recess 31 in a lying posture. Further, a tool (not shown) or the like can be stored in the recess 31. A resin-made closing panel 33 is provided for closing the upper end opening of the recess 31 so as to be openable and closable from above. In the above case, the rear end surface of the recess 31 is formed by the inner panel 16 of the lower back panel 11.

  An air conditioner 36 is provided at the front end of the vehicle compartment 5 so that air for air conditioning such as warm air and cold air can be blown toward the rear of the vehicle compartment 5.

  First ventilation ports 39, 39 are formed on both sides of the closing panel 33 in the width direction of the vehicle body 2 so as to allow the rear portion of the vehicle compartment 5 and the recess 31 to communicate with each other. Each of these first ventilation ports 39 is formed in a cutout shape at the side edge of the closing panel 33 for handling the closing panel 33 when opening and closing the upper end opening of the recess 31. . The first ventilation port 39 may be formed on either one of the left and right sides of the closing panel 33, or may be a through hole that vertically penetrates the side of the closing panel 33.

  A second ventilation port 40 is formed in the inner panel 16 of the lower back panel 11 so that a midway portion in the width direction of the vehicle body 2 in the concave portion 31 and the internal space 18 of the lower back panel 11 communicate with each other. The second ventilation port 40 is formed at a position different from the first ventilation port 39 in the width direction of the vehicle body 2. In the illustrated example, the second ventilation port 40 is formed at a substantially central portion in the width direction of the vehicle body 2 in the recess 31.

  Third side portions in the width direction (longitudinal direction) of the vehicle body 2 in the outer panel 17 of the lower back panel 11 are respectively connected to the inner space 18 of the lower back panel 11 and the rear outer region of the vehicle body 2 to communicate with each other. Ventilation ports 41 and 41 are formed. Each of the third ventilation ports 41 is formed on the outer side of the recess 31 and the second ventilation ports 40, respectively. In addition, although each said 3rd ventilation port 41 is each formed in the outer side rather than the said 2nd ventilation port 40, you may form in the substantially the same position as each side part of the said recessed part 31 in this case. Further, the third ventilation port 41 may be formed on one of the left and right sides of the lower back panel 11.

  Each of the third ventilation ports 41 is provided with a reed valve (not shown) that allows air to flow A through the third ventilation ports 41 only from the passenger compartment 5 toward the outside of the vehicle body 2 from the outside. For this reason, even if the passenger compartment 5 becomes negative pressure, the occurrence of inconvenience that the air outside the vehicle body 2 flows into the passenger compartment 5 together with the exhaust of the driving engine of the vehicle 1 is prevented.

  In the above configuration, when the doors 23, 24, and 27 are opened and closed with respect to the door openings 21, 22, and 26, it is assumed that the air pressure in the passenger compartment 5 increases and fluctuates in conjunction with the door opening and closing operation. At this time, a part of the air in the passenger compartment 5 is closed by the first ventilation port 39 of the closing panel 33 that closes the recess 31, the recessed portion 31 that is closed by the closing panel 33, the second ventilation port 40, and the lower back panel 11. The vehicle interior 5 is ventilated by sequentially flowing A through the interior space 18 and the third ventilation port 41. For this reason, the fluctuation | variation of the air pressure of the compartment 5 at the time of the said door opening / closing operation | movement is suppressed. Thus, the door opening / closing operation is prevented from being obstructed by the air pressure of the passenger compartment 5, a good operation feeling for the door opening / closing operation is ensured, and a good ride comfort to the vehicle 1 is ensured. Secured.

  On the other hand, the air-conditioning air blown from the air conditioner 36 at the front end portion of the vehicle compartment 5 toward the rear of the vehicle compartment 5 is a first ventilation of the closed panel 33 in which a part of the recess 31 is closed. The outlet 39, the recessed portion 31 closed by the closing panel 33, the second ventilation port 40, the inner space 18 of the lower back panel 11, and the third ventilation port 41 are sequentially flowed A and discharged to the rear outside area of the rear portion of the vehicle body 2. As a result, the passenger compartment 5 is ventilated. For this reason, the air for air conditioning is smoothly blown to the rear part of the passenger compartment 5 without stagnation, so that more uniform air conditioning is achieved in each part of the passenger compartment 5. A good ride is secured.

  Further, as described above, the recess 31 is formed at the center portion of the rear floor panel 12 in the width direction of the vehicle body 2, and the closing panel 33 closes the upper end opening of the recess 31. A first ventilation port 39 formed on the side of the closing panel 33 and connecting the vehicle compartment 5 and the recess 31 is located near the center of the rear floor panel 12, that is, near the center of the vehicle compartment 5. Become.

  For this reason, the ventilation of the vehicle compartment 5 through the first ventilation port 39 is effectively achieved as compared with the fact that the first ventilation port 39 is located at the side end of the rear portion of the vehicle compartment 5. Therefore, first, a good operation feeling during the door opening / closing operation is more reliably ensured. Secondly, fluctuations in the air pressure of the passenger compartment 5 during the door opening and closing operation are more reliably suppressed, and the air-conditioning air is more smoothly blown to the rear portion of the passenger compartment 5. Further, more uniform air conditioning is achieved in each part of the passenger compartment 5, so that a good ride comfort to the vehicle 1 is more reliably ensured.

  In addition, as described above, the first ventilation port 39 that communicates between the passenger compartment 5 and the recess 31 is positioned closer to the center of the passenger compartment 5, thereby achieving more uniform air conditioning in each part of the passenger compartment 5. Therefore, since the function of the air conditioner 36 depending on the driving force of the vehicle 1 can be efficiently performed, the fuel efficiency of the vehicle 1 is improved accordingly.

  On the other hand, according to the vehicle 1 having the above configuration, the noise outside the vehicle body 2 is caused by the third ventilation port 41, the inner space 18 of the lower back panel 11, the second ventilation port 40, the recess 31, and the first ventilation port 39. To reach the passenger compartment 5 in order. In particular, when the casing 5 is in a positive pressure state by the operation of the air conditioner 36 and the reed valve in the third ventilation port 41 is in an open state, the noise outside the vehicle body 2 described above. The vehicle compartment 5 tries to reach the trap with the same sound pressure without muting.

  However, as described above, the third ventilation port 41 is formed in the side portion of the lower back panel 11, the second ventilation port 40 is formed in the middle portion in the width direction of the vehicle body 2 in the recess 31, and the recess 31 is formed in the vehicle body. The first ventilation port 39 is formed at the side of the closing panel 33 that closes the upper end opening of the recess 31.

  For this reason, noise from the outside of the vehicle body 2 through the third ventilation port 41, the inner space 18 of the lower back panel 11, the second ventilation port 40, the recess 31, and the first ventilation port 39 toward the vehicle compartment 5. The sound waves are advanced in a zigzag manner. Therefore, during this progression, the sound waves are reflected in all directions and interfere with each other, thereby consuming energy. As a result, it is effectively suppressed that noise outside the vehicle body 2 reaches the vehicle compartment 5. The Moreover, when the noise outside the vehicle body 2 enters the recess 31 through the second ventilation port 40, the recess has a cross-sectional area sufficiently larger than the opening area of the second ventilation port 40 and has a large volume. Since 31 functions as a so-called expansion silencer, it is more effectively suppressed that noise outside the vehicle body 2 reaches the passenger compartment 5. Therefore, a good ride comfort on the vehicle 1 is further ensured.

  As a result of the above, it is intended to improve the ventilation effect of the passenger compartment 5 for the purpose of improving the operational feeling during the door opening and closing operation and making the air conditioning of each part of the passenger compartment 5 more uniform. In this case, even if the opening areas of the first to third ventilation ports 39 to 41 are increased to some extent, the noise outside the vehicle body 2 is effectively suppressed from reaching the passenger compartment 5.

  Then, the third ventilation port 41, the inner space 18 of the lower back panel 11, the second ventilation port 40, the concave portion, which are members for effectively suppressing the noise outside the vehicle body 2 from reaching the passenger compartment 5 are provided. 31 and the first ventilation port 39, the recess 31 is for storing the spare tire 32, and the first ventilation port 39 is for handling when the closing panel 33 is operated. The above-described suppression of the noise outside the vehicle body 2 reaching the passenger compartment 5 can be achieved with a simple configuration.

  In addition, the material, thickness, porous structure, etc. of this closing panel 33 are effective so that the sound of a desired magnitude and the sound of a desired frequency range can be effectively silenced by the sound insulation and sound absorbing action by the closing panel 33. Various selections are possible.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 4 Wheel 5 Car compartment 8 Side wall 9 Rear wall 11 Lower back panel 12 Rear floor panel 16 Inner panel 17 Outer panel 18 Internal space 21 Door opening 22 Door opening 23 Door 24 Door 26 Door opening 27 Door 31 Recess 32 Spare tire 33 Closed panel 36 Air conditioner 39 First vent 40 Second vent 41 Third vent A Flow

Claims (1)

A lower back panel that extends in the width direction of the vehicle body, and that each cross section in the longitudinal direction forms a hollow closed cross-sectional structure and forms the rear lower part of the vehicle body, and a rear lower surface of the vehicle interior that is the interior space of the vehicle body, A rear floor panel whose edge is coupled to the lower back panel, a recess formed in the center of the rear floor panel in the width direction of the vehicle body and opening upward, and a closing panel closing the upper end opening of the recess In the rear part of the vehicle body in which the rear end surface of the recess is formed by an inner panel constituting the front part of the lower back panel ,
So as to communicate with each other and the casing and the recess, and the first ventilation port formed on both sides in the width direction of the vehicle body in the closure panel, middle part and the lower back panel in the width direction of the vehicle body in the recess The second ventilation port formed in the inner panel and the inner space of the lower back panel and the rear outer area of the vehicle body communicate with each other so as to communicate with each other . e Bei a third ventilation opening and the ventilation opening at a position not wrap is formed on both sides in the width direction of the vehicle body in the outer panel of the lower back panel,
The vehicle body rear portion of the vehicle, wherein the first ventilation port is formed in a cutout shape at a side edge of the closing panel as a handle for opening and closing the upper end opening of the recess. Ventilation structure.

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