JP4400133B2 - Assembly structure of container and lid member - Google Patents

Description

  The present invention relates to an assembly structure of a container and a lid member suitable for application to, for example, a vehicle gas detection device in which a gas sensor for detecting an exhaust gas component of a vehicle is housed.

  In the conventional assembly structure of a container and a lid member, as shown in Patent Document 1, for example, one applied to a vehicle gas detection device is known.

  This vehicle gas detection device is provided in a case formed by a box-shaped container (a housing in Patent Document 1) whose one surface is open and a lid member (a cover in Patent Document 1) that closes the opening side of the container. A filter, a gas sensor, and the like are housed, dust in the air is removed by the filter, and a gas concentration in the air is detected by the gas sensor.

  An edge portion is provided on the outer periphery of the lid member, and a presser portion and a rib for protruding the inside of the container and pressing the filter are provided at positions corresponding to the filter of the lid member. Then, the rim portion of the lid member is caulked to the outer peripheral wall surrounding the opening of the container, and the container and the container are formed by fitting the claw provided on the outer peripheral wall of the container and the hook provided on the rim portion of the lid member. The lid member can be assembled.

However, since the claws and hooks are provided so as to be point-symmetric with respect to the two outer peripheral walls facing the container and the lid member, in the direction along the rim portion, and with respect to the center of the case (four places), the container There is a risk of erroneous assembly (the positions of the filter pressing portion and the rib of the lid member are reversed) in which the assembly direction of the lid member is wrong. In addition, when considering the ease of assembly between the container and the lid member, an appropriate gap is required between the container and the lid member and between the claw and the hook. There has been a problem that rattling occurs in the direction along the two outer peripheral walls and the erected portion (the vertical direction in FIGS. 1 and 2 in Patent Document 1). In addition, if play occurs, it will lead to generation of vibration sound and wear due to resonance of vehicle vibration.
JP-A-8-192617

  In view of the above problems, an object of the present invention is to provide an assembly structure of a container and a lid member that can prevent erroneous assembly related to the assembly direction and rattling during the assembly.

  In order to achieve the above object, the present invention employs the following technical means.

In the invention according to claim 1, a box-shaped container (110) whose one surface is opened in a rectangular shape,
A lid member (120) for closing the opening (111) of the container (110),
The protrusions (113) provided on the side walls (112a to 112d) surrounding the opening (111) and the overhang portions (123a to 123c) extending from the lid member (120) to the side walls (112a to 112d) are removed. In the assembly structure of the container and the lid member in which the lid member (120) is locked in the closing direction with respect to the container (110) by fitting with the hollow portion (124) formed by
Of the side walls (112a to 112d), the convex part (113) and the hollow part (124) are two opposing side walls (112a, 112b) and one of the remaining two side walls (112c, 112d) (112c). Are provided at positions corresponding to
When the direction between the remaining two side walls (112c, 112d) is defined as the A direction, the overhang portion (123c) corresponding to one (112c) of the remaining two side walls (112c, 112d) is elastic in the A direction. Have
Of the gaps (x, y) in the A direction formed when the convex part (113) and the hollow part (124) corresponding to the two side walls (112a, 112b) facing each other by elasticity are fitted , It is characterized in that the gap (x) on the far side with respect to one (112c) of the remaining two side walls (112c, 112d ) is absorbed.

  As a result, the concave and convex portions (124, 113) are formed at positions corresponding to the three side walls (112a, 112b, 112c) with respect to the rectangular opening (111). The positional relationship when assembling the lid member (120) is naturally determined, and it is possible to prevent erroneous assembly such that the orientation of the lid member (120) is wrong with respect to the container (110).

In addition, since both the convex portion (113) and the hollow portion (124) corresponding to the two side walls (112a, 112b) are locked in the A direction, the lid member (120) is attached to the container (110). A backlash in the A direction when assembled can be prevented.

In the invention according to claim 2, the remaining two side walls (112c, 112d) are located at a position corresponding to the other (112d) of the remaining two side walls (112c, 112d) with respect to the center of the container (110). An additional convex portion (113a) and an additional hollow portion (124a) are provided so as to be asymmetric with respect to the convex portion (113) and the hollow portion (124 ) on the one (112c) side.

Accordingly, the fitting between the container (110) and the lid member (120) is further strengthened by the additional convex portion (113a) and the additional hollow portion (124a) while preventing erroneous assembly to the container (110). Can do.

In the invention according to claim 3, a box-shaped container (110) having side walls (112a to 112d) surrounding an opening (111) whose one surface opens in a rectangular shape,
A lid member (120) having an edge portion (122) that fits outside the side walls (112a to 112d) and closing the opening (111);
It was formed by thinning to the convex part (113) provided in the side wall (112a-112d) and the overhang | projection part (123a-123c) extended to the side wall (112a-112d) side from the edge stand part (122) . In the assembly structure of the container and the lid member in which the lid member (120) is locked in the closing direction with respect to the container (110) by fitting with the hollow portion (124) ,
Of the side walls (112a to 112d), the convex part (113) and the hollow part (124) are two opposing side walls (112a, 112b) and one of the remaining two side walls (112c, 112d) (112c). Are provided at positions corresponding to
When the direction between the remaining two side walls (112c, 112d) is defined as the A direction, the overhang portion (123c) corresponding to one (112c) of the remaining two side walls (112c, 112d) is elastic in the A direction. Have
It is characterized in that the gap (z) in the A direction between the other (112d) of the remaining two side walls (112c, 112d) and the corresponding edged portion (122) is absorbed by elasticity.

Thereby, like the invention of the said Claim 1, a convex part (113) and a hollow part (124) respond | correspond to three side walls (112a, 112b, 112c) with respect to a rectangular-shaped opening part (111). Therefore, the positional relationship when the container (110) and the lid member (120) are assembled is naturally determined, and the direction of the lid member (120) is wrong with respect to the container (110). Incorrect assembly can be prevented.

  Moreover, since the other (112d) of the remaining two side walls (112a, 112b) and the corresponding edge stand (122) are locked in the A direction, the lid member (120) is attached to the container (110). ) Can be prevented in the A direction when assembled.

  As in the fourth aspect of the present invention, the present invention is suitably applied to a container (110) provided with a gas sensor for detecting the exhaust gas concentration of a vehicle.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the present invention is applied to a gas detection device 100 of a vehicle air conditioner. 1 is a schematic view showing a state where the gas detection device 100 is mounted on the vehicle 1, FIG. 2 is an external view showing the gas detection device 100, FIG. 3 is a side view showing a single state of the housing 110 and the cover 120, FIG. FIG. 6 is a side view showing the assembly procedure (assembled state) of the housing 110 and the cover 120.

  The gas detection device 100 detects the gas concentration in the exhaust gas, and is disposed behind the grill 2 of the vehicle 1 as shown in FIG. A filter and a gas sensor (not shown) are provided inside the housing 110 (details will be described later) of the gas detection device 100. The exhaust gas is introduced from the intake port 114 (FIG. 2A), and dust and the like are removed by the filter. Later, the gas sensor detects the gas concentration of HC, CO, NOx, etc. And this detection signal is output to ECU11 of the air conditioner 10 accommodated in the instrument panel 3. FIG. The inflowing exhaust gas flows out from the exhaust port 125 (FIG. 2 (b)).

  When the detected gas concentration is higher than a predetermined value when operating the blower 13 to blow air into the air conditioner 10, the ECU 11 switches the inside / outside air switching unit 12 of the air conditioner 10 to inside air introduction, When the detected gas concentration is lower than the predetermined value, the inside / outside air switching unit 12 is switched to outside air introduction so that cleaner air is always used.

  The housing 110 in which the filter and the gas sensor (not shown) described above are accommodated corresponds to the container of the present invention. As shown in FIGS. 2 and 3, one surface is opened, and the opening 111 that opens is formed. It has four side walls 112a, 112b, 112c, 112d and a bottom surface portion 111a that surround it. Here, the direction between the side walls 112a and 112b is the left and right direction, the direction between the side walls 112c and 112d is the up and down direction (corresponding to the A direction of the present invention), and the direction between the opening 111 and the bottom surface portion 111a of the housing 110 is front and back. We will define it as a direction. The side walls 112a and 112b correspond to the two opposing side walls of the present invention, and the side wall 112c corresponds to one of the remaining two side walls of the present invention.

  Of the four side walls 112a to 112d, the side walls 112a, 112b, and 112c (three places) are provided with claws 113 as convex portions. The claw 113 has a rectangular shape when viewed from the direction orthogonal to the side walls 112a to 112c, and from the opening 111 side to the bottom surface portion 111a side when viewed from the direction in which each surface of the side walls 112a to 112c expands. It forms in the shape of a triangle which inclines so that a meat | flesh part may increase (refer the nail | claw 113 of the lower part of FIG. 3).

  Further, the vertical dimension of the claw 113 on the side walls 112a and 112b is a, the vertical dimension from the side wall 112c to the upper end side of the claw 113 is b, and the bottom part 111a side end of the claw 113 from the opening 111 side. The dimension in the front-rear direction is c.

  The side wall 112d is provided with a mounting portion 115 for mounting on the vehicle 1, and the side wall 112a is provided with a connector 116 for connecting a harness for transmitting a detection signal from a gas sensor (not shown) to the ECU 11 ( 3 to 6, the illustration of the connector 116 is omitted).

  On the other hand, the cover 120 serving as a lid member that closes the opening 111 of the housing 110 is provided with an edge stand 122 on the outer periphery of the lid 121. Hooks 123 a, 123 b, and 123 c that extend toward the side walls 112 a to 112 c of the housing 110 are provided at portions corresponding to the claws 113 of the rim portion 122. The hooks 123a to 123c correspond to the overhanging portion of the present invention, and a hollow portion 124 as a concave portion that has been thinned into a rectangular shape is formed inside.

  The hooks 123a and 123b have elasticity in the left-right direction, and the hook 123c has elasticity in the vertical direction (arrow B in FIG. 3). Further, the dimension in the front-rear direction of the housing 110 side end of the hollow part 124 of the hooks 123a, 123b from the inner surface of the lid part 121 is made to be the same as the dimension c of the claw 113. Further, the vertical dimension of the hollow portion 124 is d, which is larger than the vertical dimension a of the claw 113, and the vertical dimension from the hook 123c to the upper end side of the hollow portion 124 of the hooks 123a, 123b is greater than the dimension b. E is also smaller. Note that the dimension e is larger than the dimension b due to the downward deflection of the hook 123c.

  4 to 6, after hooks 123c are fitted to the claws 113 of the side walls 112c (FIG. 4), hooks 123a and 123b are fitted to the claws 113 of the side walls 112a and 112b (FIG. 4). 5, FIG. 6), the cover 120 is assembled to the housing 110. At this time, the cover 120 is locked in the left-right direction of the housing 110 by the elasticity of the hooks 123a, 123b. Further, the cover 120 is locked in the front-rear direction of the housing 110 (the closing direction of the cover 120 with respect to the housing 110) by setting the dimension c of the claw 113 and the hollow portion 124.

  Furthermore, in the present invention, when the hooks 123a and 123b are fitted to the claws 113 of the side walls 112a and 112b, the hooks 123a and 123b are elasticated by the elasticity of the hooks 123c in the vertical direction (because the hooks 123c bend downward). Of the vertical gaps x and y (FIG. 5) formed between the hollow portion 124 and the claw 113, the gap x (corresponding to one gap of the present invention) is absorbed (FIG. 6). That is, the upper ends of the claw 113 and the hollow portion 124 come into contact with each other.

  Accordingly, the claw 113 and the hollow portion 124 are formed on the three side walls 112a, 112b, and 112c with respect to the rectangular opening portion 111 of the housing 110, and the position when the housing 110 and the cover 120 are assembled. Since the relationship is naturally determined, it is possible to prevent erroneous assembly that the cover 120 is in the wrong direction with respect to the housing 110.

Further, the cover 120 is locked in the front-rear direction of the housing 110 by setting the dimension c of the claw 113 and the hollow portion 124 corresponding to the side walls 112a to 112c, and the cover 120 is moved in the left-right direction of the housing 110 by the elasticity of the hooks 123a, 123b. It is locked to. Furthermore, since the claw 113 corresponding to the hooks 123a and 123b and the hollow portion 124 (hooks 123a and 123b) are vertically locked by the elasticity of the hook 123c, the cover 120 is assembled to the housing 110 as a whole. It is possible to prevent backlash in the front-rear direction, the left-right direction, and the up-down direction that is likely to occur in the prior art.
(Second Embodiment)
A second embodiment of the present invention is shown in FIG. The second embodiment corresponds to the side wall 112d (corresponding to the other of the remaining two side walls of the present invention) with respect to the first embodiment, and the claw 113 of the side wall 112c with respect to the center of the housing 110, It is assumed that a hook 123d having a claw (corresponding to the additional convex portion of the present invention) 113a and a hollow portion (corresponding to the additional concave portion of the present invention) 124a is provided so as to be asymmetric with the hook 123c.

Thereby, the fitting of the housing 110 and the cover 120 can be further strengthened by the hollow portion 124a and the claw 113a while preventing the case 120 from being erroneously assembled to the housing 110.
(Third embodiment)
A third embodiment of the present invention is shown in FIGS. 3rd Embodiment changes the site | part latched to an up-down direction with respect to the said 1st Embodiment.

  Here, the dimension between the outsides of the side walls 112c and 112d of the housing 110 is set to f, and the dimension from the hook 123c of the case 120 to the inside of the edged portion 122 corresponding to the side wall 112d is smaller than the dimension f. It is said. The dimension g is set to be larger than the dimension f due to the downward deflection of the hook 123c.

  Then, as shown in FIG. 4, FIG. 9, and FIG. 10 described in the first embodiment, after the hook 123c is fitted to the claw 113 of the side wall 112c (FIG. 4), the claw 113 of the side walls 112a and 112b. The hooks 123 a and 123 b are fitted to the cover (FIGS. 9 and 10), and the cover 120 is assembled to the housing 110.

  In the present embodiment, the vertical gap z (see FIG. 9) formed between the side wall 112d and the corresponding edged portion 122 due to the elasticity of the hook 123c in the vertical direction (because the hook 123c bends downward). ) Is absorbed (FIG. 10). That is, the outer side surface of the side wall 112d and the inner side surface of the edging portion 122 come into contact with each other.

As a result, similarly to the first embodiment, it is possible to prevent the cover 120 from being erroneously assembled to the housing 110, and to prevent back and forth, left and right, and further vertical play.
(Other embodiments)
In the first to third embodiments, the claw (convex) 113 corresponding to the side walls 112a to 112d and the hollow part (concave) 124 in the hooks 123a to 123d are described as the uneven portions of the present invention, but the present invention is not limited thereto. As shown in FIG. 11A, a recess 117 may be provided on the side wall (112c) side, and a claw 126 protruding on the hook (123c) side may be provided.

  Further, as shown in FIG. 11 (b), the claw 113 as the convex portion provided on the side wall 112c and the portion adjacent to the claw 126 provided at the tip portion of the hook 123c are regarded as the concave portion 124b, and the claws 113, 126 are taken. It is good also as what fits both.

  Moreover, although this embodiment demonstrated as the gas detection apparatus 100 in which a filter and a gas sensor are accommodated inside, it is good not only as this but a container and lid | cover members, such as fuse and ECU.

It is the schematic which shows the mounting state to the vehicle of a gas detection apparatus. (A) which shows the external appearance of the gas detection apparatus in 1st Embodiment is a side view, (b) is a front view. It is a side view which shows the single-piece | unit state of the housing and cover in 1st Embodiment. It is a side view which shows the assembly | attachment point of the housing and cover in 1st Embodiment. It is a side view which shows the clearance gap between the nail | claw and hook in 1st Embodiment. It is a side view which shows the assembly | attachment state of the housing and cover in 1st Embodiment. It is a front view which shows the external appearance of the gas detection apparatus in 2nd Embodiment. It is a side view which shows the single-piece | unit state of the housing and cover in 3rd Embodiment. It is a side view which shows the clearance gap in the side wall and edge stand part in 3rd Embodiment. It is a side view which shows the assembly | attachment state of the housing and cover in 3rd Embodiment. It is a side view which shows the nail | claw and hook in other embodiment.

Explanation of symbols

100 Gas detection device 110 Housing (container)
111 opening 112a, 112b side wall (two side walls)
112c, 112d side wall (the remaining two side walls)
113 nails (convex)
113a Nail (additional convex part)
120 Cover (lid member)
122 Edged portion 123a, 123b, 123c Hook (overhang portion)
124 Hollow part (concave part)
124a Hollow part (additional recess)

Claims (4)

A box-shaped container (110) whose one surface is opened in a rectangular shape;
A lid member (120) for closing the opening (111) of the container (110),
Projections (113) provided on the side walls (112a to 112d) surrounding the opening (111) and overhangs (123a to 123c) extending from the lid member (120) toward the side walls (112a to 112d). An assembly structure of a container and a lid member in which the lid member (120) is locked in the closing direction with respect to the container (110) by fitting with the hollow portion (124) formed by the thickness removal. In
The convex part (113) and the hollow part (124) are one of two opposing side walls (112a, 112b) and the remaining two side walls (112c, 112d) among the side walls (112a to 112d). (112c), respectively.
When the direction between the remaining two side walls (112c, 112d) is defined as the A direction, the overhang portion (123c) corresponding to one (112c) of the remaining two side walls (112c, 112d) Having elasticity in the A direction;
The gap in the A direction (x, formed when the convex portion (113) corresponding to the two opposing side walls (112a, 112b ) and the hollow portion (124) are fitted by the elasticity. The container and lid member set characterized in that the gap (x) on the side farther from one of the remaining two side walls (112c, 112d) (112c) among the remaining two side walls (112c ) is absorbed. Attached structure. The position corresponding to the other (112d) of the remaining two side walls (112c, 112d) is on the one (112c) side of the remaining two side walls (112c, 112d) with respect to the center of the container (110). the convex portion (113) and according to claim 1, wherein the hollow portion (124) and a point-asymmetrical become so additional protrusions (113a) and the additional hollow portion (124a) is provided for Assembly structure of container and lid member. A box-shaped container (110) having side walls (112a to 112d) surrounding an opening (111) whose one surface opens in a rectangular shape;
A lid member (120) having an edge portion (122) fitted outside the side walls (112a to 112d) and closing the opening (111);
The convex portion provided on the side wall (112 a to 112 d) and (113), wherein the edge stand unit from the (122) being thinned to overhang (123 a to 123 c) extending the side wall (112 a to 112 d) side In the assembly structure of the container and the lid member, the lid member (120) is locked in the closing direction with respect to the container (110) by fitting with the formed hollow part (124) .
The convex part (113) and the hollow part (124) are one of two opposing side walls (112a, 112b) and the remaining two side walls (112c, 112d) among the side walls (112a to 112d). (112c), respectively.
When the direction between the remaining two side walls (112c, 112d) is defined as the A direction, the overhang portion (123c) corresponding to one (112c) of the remaining two side walls (112c, 112d) Having elasticity in the A direction;
The gap (z) in the A direction between the other one of the remaining two side walls (112c, 112d) (112d) and the corresponding edged portion (122) is absorbed by the elasticity. Characteristic assembly structure of container and lid member.   The assembly structure of the container and the lid member according to any one of claims 1 to 3, wherein a gas sensor for detecting an exhaust gas concentration of the vehicle is provided in the container (110).

Images