JP2011073710A - Waterproof box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof box which improves workability in cover mounting work. <P>SOLUTION: A rotating shaft 26 of an upper cover 15 is hooked on the upper support portion 33 of the shaft support 18 of a box body 13, and the upper cover 15 is rotated on the position of the upper support portion 33. The upper cover 15 is rotated up to a prescribed position and is then pushed down in diagonally so as to cause the rotating shaft 26 to slide toward a lower support portion 35. As a result, the upper cover 15 covers an upper opening 14 of the box body 13 to be in a closed state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a waterproof box in which a pivot shaft portion is provided on a cover and a shaft support portion for supporting the pivot shaft portion is provided on a box body.

  For example, an electrical junction box installed in the engine room of an automobile has electrical parts such as wire harness connection processing parts, relays, fuses, or electronic control units. It is necessary to prevent water from splashing during high pressure cleaning. Therefore, the electrical junction box is formed so that it can be waterproofed by providing a waterproof structure to each of the box main body that accommodates the electric parts and the like and the cover that covers the upper opening of the box main body. The electric junction box has a function as a waterproof box.

  With respect to the waterproof box, a waterproof structure provided in the box body and a waterproof structure provided between the waterproof structure provided in the cover and waterproofed (for example, see Patent Document 1 below), without using the packing There is known a type of waterproofing by overlapping a waterproof structure part of a box body and a waterproof structure part of a cover (see, for example, Patent Document 2 below).

  A waterproof box of a type using packing can seal the gap between the packings sandwiched between the waterproof structures, so that the waterproof performance can be improved, but the number of parts and cost increase by the packing. Has the problem. In addition, there is a problem that the man-hour for mounting the packing is increased. For these reasons, packingless type waterproof boxes have been used in recent years.

  As a packingless type waterproof box, the one disclosed in Patent Document 2 below includes a box body having an upper opening and a cover that covers the upper opening of the box body. The waterproof box is formed so that waterproofing can be achieved by overlapping each waterproof structure provided at the joint of the box body and the cover. Specifically, the waterproof structure portion on the box body side has a waterproof convex portion that is provided around the tip position of the peripheral wall of the box body and has an annular shape, and the waterproof structure portion on the cover side is the tip of the cover peripheral wall. A waterproof recess is provided around the position and is annular.

  In the above configuration and structure, when the cover is disposed above the upper opening of the box body, and then the cover is moved straight down, and the waterproof structures are overlapped, the waterproof recesses are To be inserted into the department. Further, the box body and the cover are locked by hooking a U-shaped cover lock provided in the waterproof structure portion of the cover to the main body lock provided in the waterproof structure portion of the box body, thereby forming a locked state. Become so. The main body lock and the cover lock are arranged in at least two positions which are the left and right side positions (or front and rear side positions) of the waterproof box. These two places are arranged apart from each other.

  By the way, the packingless type waterproof box has the following problems. That is, when trying to release the lock state of the main body lock and the cover lock, at least two lock states must be released respectively, which is a troublesome task for the operator and the user. is doing. Moreover, in order to release the locked state at two places and remove the cover, there is a problem that a large space where both hands can be used must be secured above the waterproof box.

  In solving the above two problems, it is considered that the technology disclosed in Patent Document 3 below is effective. Patent Document 3 listed below discloses a technique that can rotate a cover relative to a box body when the cover is attached or detached. By rotating the cover, the main body lock and the cover lock can be provided at one place on the opposite side of the cover rotation position.

  The waterproof box disclosed in Patent Document 3 is provided with a rotation shaft portion on the cover, and a shaft support portion with respect to the rotation shaft portion provided on the box body, and the cover can be rotated by the engagement thereof. Yes. When the cover is rotated, the rotating shaft portion is first engaged with the shaft support portion, and then the cover is rotated above the box body with this engagement position as a rotation fulcrum. . After the cover is rotated to a predetermined position, the upper surface opening of the box body is covered by the cover by moving the cover straight down (the shaft support portion slides the rotation shaft portion in the vertical direction). It can be supported while freely engaging). At this time, a lock state by a main body lock and a cover lock is formed.

JP 2001-72116 A JP-A-9-216648 JP-A-5-49138

  In the waterproof box disclosed in Patent Document 3, when it is installed at a position where the shaft support portion of the box body cannot be seen, it is difficult to engage the shaft support portion with the shaft portion for rotation of the cover. Have the potential to become. Further, since the pivot shaft is engaged in the shaft support portion so as to be slidable in the vertical direction, the pivot point of the pivot is not stable in position, and there is a possibility that the operation becomes difficult.

  In addition, in the waterproof box disclosed in Patent Document 3, since the rotating shaft portion is slidably engaged in the up and down direction, it cannot be said that this portion is formed in a locked state. There is a problem that the stability of the cover is concerned. Also, in the case of waterproof boxes, the amount of movement in the vertical direction of the cover is large, so the space to be secured above the box body is also large, and it is not suitable for the situation in the engine room in recent years when the density increases. Has a point. In the case of the waterproof box, first, the pivot shaft portion is engaged with the shaft support portion, and then the cover is rotated above the box body with the engagement position as a pivot point while paying attention to the positional deviation. Since there is a need to surely perform several motions such as moving and finally moving the cover straight down, there is a problem that the operation is not smooth.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the waterproof box which can aim at the workability | operativity which concerns on attachment of a cover.

  The waterproof box of the present invention according to claim 1, which has been made to solve the above problem, includes a box body and a cover that covers an upper opening of the box body, and a pivot shaft is provided on a cover side wall of the cover. A shaft support portion for supporting the rotation shaft portion on the main body side wall of the box body corresponding to the cover side wall, and the shaft support portion as an upper portion as a portion for rotating the cover with respect to the box main body. It is formed in a shape having a support part, an intermediate support part as a part for sliding the cover in a direction to cover the box body, and a lower support part as a part corresponding to the closed position of the cover. A waterproof box, wherein a waterproof convex portion having a convex cross section is provided at a tip position of a peripheral wall of the main body including the main body side wall of the box body, and the cover of the cover Provided at the front end position of the cover peripheral wall including the wall is a waterproof recess having an inner wall and an outer wall and having a concave cross section that is inserted into the waterproof protrusion, and the upper support portion is obliquely above the lower support portion. The upper bearing portion is formed so that the pivot shaft portion can be hooked from a direction intersecting the vertical direction, and the pivot shaft portion is further moved from the upper bearing portion to the lower bearing portion. The intermediate support portion is formed such that the width can be increased in accordance with the size of the pivot shaft portion when sliding toward the center.

  According to the present invention having such a feature, the cover is rotated around the position of the upper support portion while the cover is hooked on the upper support portion of the shaft support portion of the box body, and the cover is rotated. When the cover is pushed diagonally downward so that the pivot shaft is slid to the lower support after the pivot is moved to a predetermined position, the cover is closed by covering the upper opening of the box body. Further, according to the present invention, when the pivot shaft is slid from the upper bearing portion toward the lower bearing portion, the width of the intermediate bearing portion is increased according to the size of the pivot shaft portion at this time. From this, while the cover is rotated to a predetermined position, the width of the intermediate support portion is narrow, and as a result, the position of the rotation shaft portion is stabilized. After the pivot shaft portion is slid to the lower support portion, the width of the intermediate support portion returns to the original position and the width becomes narrower. . That is, a locked state is formed. According to the present invention, the operations up to this point, that is, the above-described hooking, turning, and pushing operations can be performed continuously (for details, refer to the column of the mode for carrying out the invention), so the operations can be performed smoothly Is possible.

  A waterproof box according to a second aspect of the present invention is the waterproof box according to the first aspect, wherein a skirt portion having a substantially inverted L-shaped cross section is provided at a tip of the outer wall, and a continuous position between the skirt portion and the outer wall. A rib projecting in accordance with the above is provided on the peripheral wall of the main body.

  According to the present invention having such a feature, in the closed state of the cover, the waterproof concave portion is inserted into the waterproof convex portion, and the skirt portion and the rib are engaged. When viewed in cross section, the mating surfaces of the waterproof convex portion and the waterproof concave portion and the mating surfaces of the skirt portion and the rib that follow this form a maze composed of a plurality of steps.

  According to the first aspect of the present invention, there is an effect that it is possible to provide a waterproof box capable of improving workability related to the attachment of the cover.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the waterproof performance can be improved.

It is a schematic diagram which shows the example of installation of the electrical junction box which includes the waterproof box of this invention in a structure. It is a perspective view of the electrical junction box which shows the state in the middle of rotation of the cover in a waterproof box. It is a perspective view of the electrical junction box which shows the closed state of the cover in a waterproof box. It is an expansion perspective view of a shaft part for rotation and a support part. It is a figure which shows the state in the middle of rotation of the cover in a waterproof box, (a) is a perspective view of a shaft part for rotation and a support part periphery, (b) is a side view of a shaft part for rotation and a support part periphery. It is a figure which shows the closed state of the cover in a waterproof box, (a) is a perspective view of the shaft part for rotation and a support part periphery, (b) is a side view of the shaft part for rotation and a support part periphery. It is sectional drawing of the box main body and cover which show the state just before hooking the shaft part for rotation on an upper side support part. It is sectional drawing of the box main body and cover which show the state in the middle of rotation of a cover. It is sectional drawing of the box main body and cover which show the state which rotated the cover to the predetermined position. It is sectional drawing of a box main body and a cover which show the state at the time of sliding the axial part for rotation from an upper side support part toward a lower side support part. It is sectional drawing of the box main body and cover which show the closed state of a cover.

  Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an installation example of an electrical junction box including a waterproof box according to the present invention. 2 to 11 are a perspective view, a side view, and a cross-sectional view relating to the rotation of the cover in the waterproof box.

  In FIG. 1, reference numeral 1 indicates an electrical junction box (R / B: relay box, J / B: junction box, ECU or other vehicle electrical component built-in device). The electrical junction box 1 is not particularly limited but is a relay box and is installed in the engine room 3 of the automobile 2. In the engine room 3, a battery 5 is installed next to the engine 4. Next to this, an electrical junction box 1 is installed. Since the electrical junction box 1 is installed in the engine room 3, it is necessary to prevent moisture from being applied to internal electrical components (parts that dislike moisture) when running in the rain or during high-pressure cleaning of the engine room 3. It has sex.

  The electrical junction box 1 described below has a waterproof box according to the present invention, and even if the high-pressure washing spray water pressure is a high water pressure such as 8 MPa to 12 MPa, moisture is applied to the internal electrical components and the like. It ’s not like that. As will be understood from the following description, the waterproof box according to the present invention has a structure in which workability related to attachment of the cover is improved.

  2 and 3, the electrical junction box 1 includes a synthetic resin waterproof box 11 and a functional component 12 (see FIG. 2) accommodated in the waterproof box 11. A wire harness (not shown) including, for example, an aluminum electric wire is drawn into the waterproof box 11. The functional component 12 includes components such as a relay (illustration of components such as a relay is omitted).

  The waterproof box 11 includes a box main body 13 serving as a housing part for the functional parts 12 and the like, an upper cover 15 (corresponding to a cover described in claims) covering the upper opening 14 of the box main body 13, A lower cover 16 fitted to the lower portion is provided.

  The present invention is characterized by the box body 13 and the upper cover 15. The feature is that the upper cover 15 is rotatable with respect to the box main body 13 and can be easily attached and detached with one hand. In addition, although this invention is packingless, it has the waterproof structure which can exhibit high waterproof performance. Hereinafter, the box main body 13 and the upper cover 15 will be described first while including the above features.

  The box body 13 has a body peripheral wall 17. The main body peripheral wall 17 is formed in a frame shape. The main body peripheral wall 17 is formed, for example, in a shape as shown in the figure by connecting a plurality of main body side walls 17a, 17b. Here, when the arrow P is defined as the vertical direction, the arrow Q is defined as the front-rear direction, and the arrow R is defined as the left-right direction (here, they are defined without being aligned with the front-rear direction and the left-right direction of the engine room 3). A shaft support 18 (described later) is provided on the outer surface of the rear main body side wall 17a in order to make the upper cover 15 turnable and detachable. A main body lock 19 for locking the upper cover 15 is provided on the outer surface of the main body side wall (reference numeral omitted) on the main body peripheral wall 17.

  The box main body 13 is formed so that the upper cover 15 can be rotated about the shaft support 18 and the upper cover 15 can be locked by a main body lock 19 to be locked. . Further, the upper cover 15 can be easily removed by releasing the lock state and rotating the upper cover 15 simultaneously with the release.

  A waterproof projection 20 having a convex cross section is provided around the upper end portion of the peripheral wall 17 as a portion for waterproofing. The waterproof convex portion 20 is provided as a waterproof structure portion on the box body 13 side. Regarding the waterproof convex portion 20, a taper 21 (see FIG. 7) is formed on the inner surface side of the main body side wall 17a. The taper 21 is not a functional part for waterproofing, but is formed as a functional part for making the upper cover 15 rotatable and detachable. In such a waterproof convex portion 20, a rib 22 that functions as a waterproof structure portion is provided around the outer surface of the main body peripheral wall 17. The ribs 22 are arranged and formed so as to protrude in accordance with a continuous position of a skirt portion 30 and an outer wall 29b described later.

  A plurality of fitting portions 23 are provided at the lower end portion of the peripheral wall 17 as portions for fitting the lower cover 16. In addition, regarding the fitting part 23, description here shall be abbreviate | omitted as what employs a well-known structure.

  The upper cover 15 is a lid member formed in accordance with the shape of the box body 13, and extends downward from the ceiling wall 24 that is the uppermost portion of the waterproof box 11 and the peripheral portion of the ceiling wall 24. And a cover peripheral wall 25. The cover peripheral wall 25 is formed, for example, in a shape as shown in the figure by connecting a plurality of cover side walls 25a, 25b. The rear cover side wall 25a of the cover peripheral wall 25 is provided with a rotating portion 27 (described later) having a rotating shaft portion 26 that becomes the rotation center of the upper cover 15 together with the shaft support portion 18 of the box body 13. Yes. Further, a cover lock 28 is provided on the outer surface of the front cover side wall of the cover peripheral wall 25 so as to be hooked and locked to the main body lock 19 of the box main body 13.

  A waterproof recess 29 having a concave cross section is provided at the lower end of the cover peripheral wall 25 as a portion for waterproofing. The waterproof recess 29 is provided as a waterproof structure on the upper cover 15 side. The waterproof recess 29 has an inner wall 29a and an outer wall 29b (see FIG. 7) and is formed in a concave shape that is inserted into the waterproof protrusion 20 on the box body 13 side. A skirt portion 30 functioning as a waterproof structure portion is coupled to the tip of the outer wall 29b in the waterproof recess 29. The skirt portion 30 is formed in a shape that is substantially L-shaped in cross section. The skirt portion 30 and the rib 22 have a function of making it difficult for water to enter by forming the waterproof structure portion in a maze composed of a plurality of steps.

  An inclined taper 31 is formed at the tip of the inner wall 29a of the cover side wall 25a so as to face the taper 21 (see FIG. 7) of the waterproof convex portion 20.

  The lower cover 16 is a well-known one and will not be described in detail.

  Next, the rotation part 27 having the shaft support part 18 of the box body 13 and the rotation shaft part 26 of the upper cover 15 will be described mainly with reference to FIG. 4 (the rotation part 27 will be described first). To do). FIG. 4 shows an enlarged perspective view of the rotating portion 27 having the rotating shaft portion 26 and the support portion 18. The illustrated shapes of the rotating part 27 and the support part 18 are only examples.

  In FIG. 4, the rotating part 27 includes a pair of support plates 32 as shown in the figure that protrude from the outer surface of the cover side wall 25 a and the free end faces downward, and the free plates of the pair of support plates 32 parallel to the outer surface. It has a round bar-shaped rotation shaft portion 26 extending through the end portion. The pair of support plates 32 are arranged and formed at a predetermined interval. The rotation shaft portion 26 is disposed at a position below the free end (tip) position of the skirt portion 30 (see FIG. 7). The rotation shaft portion 26 is composed of three parts. Specifically, the first rotation shaft portion 26 a located between the pair of support plates 32 and the second and third rotation shaft portions 26 b and 26 c located outside the support plates 32 are configured. (The second and third pivot shafts 26b and 26c are formed in the same manner).

  The shaft support portion 18 has a shape as shown in the figure that protrudes from the outer surface of the main body side wall 17 a and has a free end portion facing upward, and is configured by three portions in the same manner as the configuration of the rotation shaft portion 26. Specifically, a first shaft support portion 18a corresponding to the first rotation shaft portion 26a, and second and third shaft support portions 18b, 18c corresponding to the second and third rotation shaft portions 26b, 26c, and (The second and third shaft support portions 18b and 18c are formed in the same manner).

  The first shaft support portion 18a is disposed so as to be positioned between the second and third shaft support portions 18b and 18c. The first shaft support portion 18a is formed in a substantially arm shape having flexibility. The first shaft support portion 18 a is formed so that this free end position extends to a position above the waterproof convex portion 20. The first shaft support portion 18a is formed so that the end surface at the free end position faces rearward rather than upward (to restrict the engaging direction of the first rotating shaft portion 26a). The second and third shaft support portions 18b and 18c are formed in a substantially arm shape that basically does not bend. The end surfaces at the free end positions of the second and third shaft support portions 18b and 18c are disposed below the end surface of the first shaft support portion 18a.

  The shaft support 18 is formed in a shape that can sandwich the rotation shaft 26 by the cooperation of the first shaft support 18a and the second and third shaft support 18b, 18c. As a space (see FIG. 7) when such a shaft support 18 is viewed from the side, reference numeral 33 indicates an upper support, reference numeral 34 indicates an intermediate support, and reference 35 indicates a lower support. ing.

  In FIG. 7, the upper support portion 33 is formed as a portion for rotating the upper cover 15 with respect to the box body 13. The intermediate support portion 34 is formed as a portion that slides the upper cover 15 in a direction to cover the box body 13. Further, the lower support portion 35 is formed as a portion corresponding to the closed position of the upper cover 15.

  In addition, the upper support portion 33 is disposed in an obliquely upward direction outside the lower support portion 35. Further, the upper support portion 33 is formed with an opening so that the pivot shaft portion 26 can be hooked from a direction intersecting the vertical direction (see the direction of the arrow S). The intermediate bearing portion 34 is configured so that when the pivot shaft portion 26 is slid from the upper bearing portion 33 toward the lower bearing portion 35, the width is increased by the bending of the first shaft bearing portion 18 a, in other words, the pivot shaft portion 26 is pivoted. The width is formed so as to increase in accordance with the size of the shaft portion 26. Since the intermediate support portion 34 does not increase in width when the upper cover 15 is rotated, the position of the rotation shaft portion 26 can be stabilized (sliding movement is restricted). For). Since the intermediate bearing portion 34 slides and moves the pivot shaft portion 26 to the lower bearing portion 35, the width of the intermediate bearing portion 34 returns to the original position and becomes narrower. (The intermediate bearing portion 34 has a function as a main body lock).

  Next, the operation related to the rotation of the upper cover 15 will be described based on the above configuration and structure.

  4 and 7, while holding the upper cover 15 with one hand and tilting the upper cover 15 as shown, the upper cover 15 is moved, for example, from the front to the rear (moved in the direction of arrow Q in FIG. 7). Then, it is moved in a diagonally downward direction (arrow S direction; the S direction is a direction intersecting the arrow P that is the vertical direction). At this time, the rotation shaft portion 26 of the upper cover 15 moves toward the opening of the upper support portion 33 in the box body 13.

  5 and 8, when the rotation shaft portion 26 is hooked and engaged with the upper support portion 33 (when the first rotation shaft portion 26a is hooked and engaged with the first shaft support portion 18a), the upper cover is engaged. 15 becomes a rotatable state. Since the upper cover 15 is caught and engaged as described above, the upper cover 15 rotates in the arrow T direction when the hand holding the upper cover 15 is lowered.

  After the upper cover 15 is rotated to the position shown in FIG. 9 (after the upper cover 15 is rotated until the inner wall 29a of the waterproof recess 29 in the cover side wall 25a is positioned immediately above the waterproof protrusion 20 in the main body side wall 17a. 6), when the upper cover 15 is pushed downward slightly obliquely, the upper cover 15 passes through the state shown in FIG. 10 (the state in which the inner wall 29a of the waterproof recess 29 slips away from the waterproof protrusion 20). The state shown in FIG. 11 is obtained. That is, the upper cover 15 covers the box body 13 and is in a closed state. The above operation is a continuous operation in which the upper cover 15 is pushed downward while being slightly inclined while the upper cover 15 is rotated while the rotation shaft portion 26 is hooked on the upper support portion 33. It will be as smooth as possible.

  9 and 10 show a state in which the pivot shaft portion 26 slides from the upper support portion 33 toward the lower support portion 35, and the width of the intermediate support portion 34 is increased. I understand that

  As described above, as described with reference to FIGS. 1 to 11, according to the present invention, it is understood that the workability related to the attachment of the upper cover 15 is good. Moreover, it turns out that waterproof performance is also favorable.

  In addition, according to the present invention, it can be seen that the amount of movement of the upper cover 15 in the vertical direction is small (see FIGS. 9 to 11) and can be adapted to the recent situation in the engine room where the density is increasing.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Electric junction box 2 ... Automobile 3 ... Engine room 4 ... Engine 5 ... Battery 11 ... Waterproof box 12 ... Functional component 13 ... Box main body 14 ... Upper opening 15 ... Upper cover (cover)
DESCRIPTION OF SYMBOLS 16 ... Lower cover 17 ... Main body surrounding wall 17a ... Main body side wall 18 ... Shaft support part 19 ... Main body lock 20 ... Waterproof convex part 22 ... Rib 25 ... Cover peripheral wall 25a ... Cover side wall 26 ... Turning shaft part 27 ... Turning part 28 ... Cover lock 29 ... Waterproof recess 29a ... Inner wall 29b ... Outer wall 30 ... Skirt part 32 ... Support plate 33 ... Upper bearing part 34 ... Intermediate bearing part 35 ... Lower bearing part

Claims (2)

A box body and a cover that covers an upper opening of the box body, and a rotation shaft portion is provided on the cover side wall of the cover, and the rotation shaft portion is supported on the body side wall of the box body corresponding to the cover side wall. An upper bearing portion as a portion for rotating the cover with respect to the box body, and an intermediate portion as a portion for sliding the cover with respect to the box body. A waterproof box formed into a shape having a support part and a lower support part as a part corresponding to the closed position of the cover,
A waterproof convex portion having a convex cross section is provided at the distal end position of the main body peripheral wall including the main body side wall of the box main body, and the waterproof convex portion has an inner wall and an outer wall at the front end position of the cover peripheral wall including the cover side wall of the cover. A waterproof recess having a concave cross-section to be inserted into the part, and
The upper bearing portion is disposed in an obliquely upward direction outside the lower bearing portion, and the upper bearing portion is formed so that the pivot shaft portion can be hooked from a direction intersecting the vertical direction. The intermediate bearing portion is formed so that the width can be expanded in accordance with the size of the pivot shaft portion when the pivot shaft portion is slid from the upper bearing portion toward the lower bearing portion. Waterproof box. The waterproof box according to claim 1,
A waterproof box, wherein a skirt portion having a substantially inverted L-shaped cross section is provided at a front end of the outer wall, and a rib that protrudes in accordance with a continuous position between the skirt portion and the outer wall is provided on the peripheral wall of the main body.

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