JP2002339817A - Partition wall installing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partition wall installing structure capable of smoothly installing a partition wall even if a position of locking parts formed in a plurality of members is dislocated a little, in the partition wall installing structure for locking and fixing locked object parts of the partition wall on and to these locking parts by forming one space by connecting the plurality of members, and forming the locking parts in opposed positions of the space. SOLUTION: The partition wall 3 is held by locking of one locking part 21b and the locked object part 3b. The other locking part 22b and the locked object part 3c lock the partition wall 3 in a movable state. Even if dislocation is caused between the locking parts 21b and 22b, the partition wall can be installed by absorbing the dislocation within a movable range of the locked object part 3c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition wall mounting structure in which a plurality of resin members are connected to form one space, and this space is divided by the partition wall.

[0002]

2. Description of the Related Art In a resin product formed by extrusion molding or injection molding, a plurality of members are separately molded, and thereafter,
In some cases, each member is joined by means such as welding to create one space. An example of such an intake manifold is an intake manifold of a multi-cylinder engine, which has recently been resinified for the purpose of weight reduction and cost reduction.

FIG. 5 is a view showing a state in which an intake manifold as a resin part of the present invention is mounted on a multi-cylinder engine. As shown in FIG. 1, the engine 110 includes a cylinder head 112 and a cylinder block 113 that constitute a combustion chamber 111. A plurality of intake passages 115 communicating with the combustion chamber 111 are opened on the outer surface 114 of the cylinder head 112.

[0004] The engine 110 also includes the combustion chamber 111.
An intake manifold 116 is provided for supplying combustion air to the engine. The intake manifold 116 is made of, for example, a thermoplastic resin such as polyamide.
A plurality of intake pipes 118 having an outlet 117 communicating with
.., And two or more optional intake pipes 118
And an air inlet 120 to the chamber 119 are integrally provided. The intake port 120 is provided with a throttle valve device 121 for controlling intake of the engine, and the supply amount of intake is controlled by opening and closing the valve.

[0005] The intake manifold 116
Usually, a plurality of intake pipes 1 provided one for each cylinder
18 and one or a plurality of surge tanks communicating with these intake pipes 118.
It is divided into a plurality of members such as divided into two such as 22 and 123, each is formed of a thermoplastic resin, and each member is joined to form a space such as an intake pipe or a surge tank. A space such as an intake pipe or a surge tank may be partitioned by a partition wall for various purposes such as installation of a variable intake valve.

FIG. 6 is a cross-sectional view of a conventional example in which a plurality of resin members 1 and 2 are bonded to form the space 4, and a part of the intake manifold 116 of FIG. is there. The space 4 is a chamber 119 formed by the members 122 and 123, and is divided into right and left by the partition wall 3 made of resin. When the space 4 is a surge tank,
An opening is formed in the partition wall 3, and a configuration of a variable intake valve that opens and closes the opening with a valve such as a butterfly valve is added. However, since there is no direct relationship in the present invention, illustration is omitted.

The partition wall 3 has projecting portions 3a, 3a protruding on both sides, and is mounted on supporting members 2a, 2a provided on the member 2, and is supported in a floating state. When the space 4 is a surge tank, vibration occurs in the partition wall 3 due to a pressure difference between the spaces 4 on both sides. This can cause abnormal noise. Therefore, the upper edge 3b of the partition wall 3
Are inserted into the groove 1a formed in the member 1 and the lower end edge 3c is inserted into the groove 2b formed in the member 2 to be positioned and fixed.

FIG. 7A shows a plurality of resin members 11,
FIG. 11 is a cross-sectional view of another conventional example in which a space 4 is formed by bonding 12. As in FIG. 4, the partition wall 3 has convex portions 3a, 3a on both sides.
Having support members 12a,
12a is mounted and supported. The upper edge 3b of the partition wall 3 is inserted into a groove 11a formed in the member 11,
The lower edge 3c is inserted into the groove 12b formed in the member 12 via the elastic members 5 and 5, such as rubber packing, for positioning. The upper and lower elastic members 5, 5
The joint between the partition wall 3 and the members 11 and 12 is sealed to prevent generation of abnormal noise due to vibration. The sealing direction is the left and right direction, and the sealing surfaces of both the upper and lower elastic members 5 are different. These are both side surfaces of the grooves 11a and 12b.

FIG. 7 (b) shows another pattern of FIG. 7 (a), in which the partition wall 3 has elastic members 6 on the upper and lower edges 3b, 3c.
6. The sealing direction of the elastic bodies 6 is the up and down direction, and the sealing surfaces are the bottom surfaces of the grooves 11a and 12b.

[0010]

The plurality of resin members 1 and 2 shown in FIG. 6 and the resin members 11 and 12 shown in FIG. 7 are formed by injection molding or the like. , 2b,
Protrusions and the like corresponding to 11a, 12b are formed, and when resin members 1, 2 are formed, grooves 1a, 2b, 11a,
12b is also formed at the same time.

However, in the case of the conventional example shown in FIG. 6, since it is made of resin, deformations occurring after molding of the members 1 and 2,
Due to errors that occur when joining the two members 1 and 2,
The positions of the grooves 1a and 2b may be misaligned, and the partition wall 3 may not be attached.

In the case of the conventional example shown in FIG. 7A, the positions of the grooves 11a and 12b may be shifted for the same reason as described above. In particular, as shown in FIGS.
When the three members 11, 12, 13 are joined, it is more difficult to adjust the displacement, and in FIG. 8A, the elastic body 5 below the figure does not enter the groove 12b. Or, FIG.
As shown in (b), the elastic body 6 in the upper part of the figure separates from the bottom of the groove 11a and cannot be sealed. Such a problem occurred.

The present invention has been made to solve such a problem. A plurality of members are connected to form one space, and a locking portion is formed at a position facing the space, and these locking portions are formed. In the partition wall mounting structure in which the locked portion of the partition wall is locked and fixed to the portion, even if the positions of the locking portions formed on a plurality of members are slightly shifted, the partition wall can be mounted without any problem. It is intended to provide a wall mounting structure.

[0014]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of forming a space by connecting a plurality of members, and forming a locking portion at a position facing the space. In the partition wall mounting structure in which the locked portion of the partition wall is locked and fixed to the locking portion, the locking between the one locking portion and the locked portion causes the partition wall to be rotatably held. The other locked portion side of the partition wall is swingably movable within a certain range, and is locked with the other locking portion within the swingable range.
The opposing locking portions may be formed on one member or may be formed on different members.

The other locking portion and the locked portion may be locked so that the partition wall can swing, or the locking portion and the locked portion may be locked via an elastic body. However, after the locking, the rotation or swinging is suppressed, or one of the locking portion and the locked portion is a groove, and the other is a convex portion that enters the groove. One of the locking portion and the locked portion on the side that is rotatably held may be a dovetail groove, and the other may be a protrusion that enters the dovetail groove. .

Alternatively, one space is formed by connecting a plurality of members, locking portions are formed at opposing positions of the space, and locked portions of the partition wall are locked to these locking portions. In the fixing structure of the partition wall to be fixed, each of the locking portions and each of the locked portions are engaged in a state of being sealed with an elastic body, and the elastic body is sealed between the one locking portion and the locked portion. The surface and the sealing surface of the elastic body in the other locking portion and the locked portion are arranged in directions intersecting each other. At this time, one of the engagement between the one and the other locking portions and the locked portion is
The partition wall may be rotatably supported.

In the above mounting structure for partition walls, the plurality of members are made of synthetic resin, the space forms a space for an intake device in an internal combustion engine, and the partition wall is a wall for mounting a variable intake valve. It can be.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a first embodiment of the present invention. The plurality of members 21 and 22 are both made of a thermoplastic resin, and are formed on a joining surface 21 formed on the periphery of the members 21 and 22.
The space 4 is formed by laminating a and 22a and bonding them by means such as vibration welding. The space 4 is, for example, a space inside the intake manifold 116.

The space 4 is divided right and left by the partition wall 3. The partition wall 3 has projections 3a, 3 on both sides as in the conventional example.
A is supported in a floating state by placing a on support members 22c, 22c formed on the member 22. However, the present invention is not limited to support in a floating state.

The member 21 has a groove-shaped locking portion 21b, and the member 22 also has a groove-shaped locking portion 22b. The partition wall 3 is a locked portion 3b whose upper edge in the drawing is convex,
The engaging portion 21b is fitted to the engaging portion 21b, and the lower end edge is also a protruding engaged portion 3c, and is fitted to the engaging portion 22b.

The locking portion 21b is shaped like a dovetail groove with a narrow entrance and a large depth, and
b is held in contact with the entrance portion of the dovetail groove, but the partition wall 3 is within a slight angle around the point where the locked portion 3b and the locking portion 21b are engaged. Becomes rotatable. The groove of the opposed locking portion 22b is wider than the width of the locked portion 3c of the partition wall 3, and the locked portion 3c is
It is loosely fitted inside 2b so as to be able to swing left and right.

Even if a displacement occurs between the locking portion 21b and the locking portion 22b due to a deformation occurring after manufacturing the members 21 and 22 or a deformation occurring at the time of connection, the locked portion 3c can swing. Within such a range, the locked portion 3c can be inserted and attached in the locking portion 22b by swinging the partition wall 3.

The locking portions 21b and 22b are grooves and the locked portions 3b and 3c are convex.
A configuration is also possible in which b and 22b are convex and the locked portions 3b and 3c are grooves. Further, although the partition wall 3 is described as constituting a variable intake valve which is provided with an opening and is opened and closed by a valve, it can be easily understood that a simple partition wall having no opening may be used.

FIG. 2 is a sectional view of a second embodiment of the present invention. Components common to those in the embodiment of FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, elastic members 7 made of rubber packing or the like are attached to the locked portions 3b, 3c as both end edges of the partition wall 3. The elastic body 7 can ensure airtightness of the joint between the partition wall 3 and the members 22 and 22 and can prevent sound from being generated even when the partition wall 3 vibrates. With such a configuration, even if a gap occurs between the locking portion 21b and the locking portion 22b, if the partition wall 3 is within the swingable range, the gap is absorbed and the partition wall 3 is attached. Can be. After installation, the partition wall 3 is fixed,
It is in a state where neither rotation nor swing can be performed.

FIG. 3 is a sectional view of a third embodiment of the present invention.
This is an example in which a member 31 is used instead of the member 21. Member 3
1, a groove is formed as a locking portion 31b, which is a normal groove that is not a dovetail shape. On the other hand, partition wall 3
An elastic body 8 having the bottom surface of the groove of the locking portion 31b as a sealing surface is provided on the locked portion 3b on the upper edge side, and both sides of the groove of the locking portion 22b on the locked portion 3c on the lower edge side. The elastic body 7 having a sealing surface is provided. As described above, if the sealing surfaces of the elastic members 7 and 8 are orthogonal or intersecting with each other, even if the locking portion 31b and the locking portion 22b are displaced in the vertical direction in the drawing, the displacement is absorbed. Can be sealed.

In the locking portion 22b, the locked portion 3c is locked in a rotatable state. Therefore, if the width of the groove as the upper locking portion 31b is wider than the locked portion 3b, even if the locking portion 31b and the locking portion 22b are shifted in the left-right direction in the drawing, the shift is partitioned. As long as it is within the swing range of the wall 3, the displacement can be absorbed and attached. Therefore, according to the embodiment of FIG. 3, even if the locking portions 31b and 22b are displaced both vertically and horizontally, it can be absorbed.

The elastic body 8 and the elastic body 7 are connected to the partition wall 3.
May be independently provided above and below, but it is preferable that the partition wall 3 is connected in a manner not shown in the drawing at both end edges and is provided in an annular shape so as to make a round around the partition wall 3. In this case, the elastic body that seals both end edges that do not appear in the diagram of the partition wall 3 may be of the elastic body 7 type or the elastic body 8 type.
Any type may be used.

FIG. 4 is a sectional view of a fourth embodiment of the present invention.
FIG. 3 is a diagram showing an example in which a space 4 formed by joining three members 21, 22 and 23 is divided by a partition wall 3. When the three members are joined in this manner, the locking portions 21b and 22b
This means that, in addition to the horizontal displacement in the figure, the vertical displacement in the figure is more likely to occur.

Therefore, the locking portion 21b of the member 21 is formed as a dovetail-shaped groove, and is engaged with the locked portion 3b via the elastic member 8, and the elastic member 7 is attached to the locking portion 22b of the member 22. The sealing surface is the bottom surface of the groove.

The upper end of the partition wall 3 is rotatable by the engagement between the locking portion 21b formed of a dovetail groove and the locked portion 3b,
The lower end edge of the partition wall 3 swings to absorb the misalignment in the left and right direction in the figure, and the elastic body 8 provided on the upper edge side of the partition wall 3 seals the bottom surface of the groove of the locking portion 21b so as to be vertically Direction deviation can be absorbed.

In the above embodiment, the case where the opposing locking portions 21b and 22b or the locking portions 31b and 22b are formed on different members 21, 22, or 31 has been described.
The present invention is not limited to this, and is also applicable to a case where two locking portions are formed to face one member. In addition, the locking portion 21
The groove b is not limited to a dovetail shape, and may have any shape as long as one end of the partition wall 3 can be rotatably locked.

[0032]

According to the present invention as described above,
A plurality of members are connected to form a single space, locking portions are formed at opposing positions of the space, and the locked portions of the partition wall are locked and fixed to these locking portions. In the mounting structure,
In the locking between the one locking portion and the locked portion, the partition wall is rotatably held, and the other locked portion side of the partition wall is made to be swingable within a certain range, Since the locking portion is locked with the other locking portion within the movable range, even if a shift occurs between the facing locking portions, the shift within the movable range can be absorbed and the partition wall can be attached.

If one of the locking portion and the locked portion is formed of a groove and a convex portion which enters the groove, and both are locked via an elastic body, the seal of the locking portion can be improved. can do. Further, when the partition wall is a wall to which the variable intake valve is attached, abnormal noise due to vibration of the wall can be prevented.

The locking portions and the locked portions are engaged with each other in a state sealed by an elastic body, and the sealing surface of the elastic body at the one locking portion and the locked portion is engaged with the other engagement portion. With a configuration in which the sealing surface of the elastic body in the locking portion and the locked portion is arranged in a direction intersecting with each other, even if a gap between the facing locking portions occurs in two directions, the gap is absorbed. In addition, a partition wall capable of being sealed can be attached.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a sectional view of a second embodiment of the present invention.

FIG. 3 is a sectional view of a third embodiment of the present invention.

FIG. 4 is a sectional view of a fourth embodiment of the present invention.

FIG. 5 is a view showing a state in which an intake manifold as a resin part is mounted on a multi-cylinder engine.

FIG. 6 is a sectional view of a conventional example in which a space is formed by bonding a plurality of resin members.

FIG. 7 is a sectional view of another conventional example in which a space is formed by bonding a plurality of resin members.

FIG. 8 is a cross-sectional view showing a conventional example when three members are joined.

[Explanation of symbols]

 3 partition wall 3b, 3c locked part 4 space 7, 8 elastic body 21, 22, 23, 31 member 21b, 22b, 31b locking part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuka Kito 2480 Kuno, Odawara City, Kanagawa Prefecture Inside the Mikuni Odawara Plant (72) Inventor Tomonori Ikuma 1-4-1 Chuo, Wako City, Saitama Prefecture Honda Co., Ltd. Within the Technical Research Institute (72) Inventor Kazuyoshi Sato 1-4-1 Chuo, Wako-shi, Saitama Prefecture Honda Technical Research Institute, Inc.

Claims (8)

[Claims] 1. A plurality of members are connected to form one space, a locking portion is formed at a position facing the space, and a locked portion of a partition wall is locked to these locking portions. In the fixing structure of the partition wall to be fixed, in the locking between the one locking portion and the locked portion, the partition wall is rotatably held, and the other locked portion side of the partition wall is within a certain range. A partition wall mounting structure wherein the partition wall is in a swingable state and is locked with the other locking portion within a range in which the swing is movable. 2. The locking device according to claim 1, wherein the other locking portion and the locked portion are locked so that a partition wall can swing.
The mounting structure of the partition wall described. 3. The locking portion and the locked portion are locked via an elastic body, and after the locking, the rotation and the swing are suppressed. Partition wall mounting structure. 4. The partition wall according to claim 1, wherein one of the locking portion and the locked portion is a groove, and the other is a convex portion that enters the groove. Mounting structure. 5. A method according to claim 1, wherein one of the locking portion and the locked portion on the side that is rotatably held is a dovetail groove, and the other is a convex portion that enters the dovetail groove. Claim 1.
5. The mounting structure for a partition wall according to any one of items 1 to 4. 6. A space is formed by connecting a plurality of members, a locking portion is formed at a position facing the space, and a locked portion of the partition wall is locked to the locking portion. In the mounting structure of the partition wall to be fixed, each of the locking portions and each of the locked portions are engaged in a state of being sealed with an elastic body, and the elastic body is sealed between the one locking portion and the locked portion. A mounting structure for a partition wall, wherein a surface and a sealing surface of an elastic body in the other locking portion and the locked portion are arranged in a direction crossing each other. 7. The partition wall mounting structure according to claim 6, wherein one of the engagement between the one and other locking portions and the locked portion supports the partition wall so as to be rotatable. . 8. The apparatus according to claim 1, wherein said plurality of members are made of synthetic resin, said space forms a space for an intake device in an internal combustion engine, and said partition wall is a wall for mounting a variable intake valve. 8. The mounting structure for a partition wall according to any one of 7 above.