CN108767779B - Electrical junction box - Google Patents
Electrical junction box Download PDFInfo
- Publication number
- CN108767779B CN108767779B CN201810339515.2A CN201810339515A CN108767779B CN 108767779 B CN108767779 B CN 108767779B CN 201810339515 A CN201810339515 A CN 201810339515A CN 108767779 B CN108767779 B CN 108767779B
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- Prior art keywords
- fixed
- engaging
- engaged
- support portion
- support
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- 238000003780 insertion Methods 0.000 claims abstract description 95
- 230000037431 insertion Effects 0.000 claims abstract description 95
- 238000005452 bending Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/081—Bases, casings or covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
- B60R16/0215—Protecting, fastening and routing means therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
Provided is an electrical junction box capable of suppressing looseness in an engagement portion. The electrical connection box (1) has a box body (2) for accommodating electronic components, and the box body has: a fixed part (14) fixed to a first support part (101) of the structure; an engaging section (35) which is inserted into a hole section of a second support section (102) of the structure and engages with the second support section; and contact parts (41), (47) that contact the structure at a position between the fixed part and the engagement part, the engagement part having: insertion sections (38, 44) inserted into the hole sections; and locked parts (40, 46) protruding from the insertion part in a direction intersecting the insertion direction into the hole, and locked by the second support part in a state where the insertion part is inserted into the hole, the fixed parts being fixed to the first support part, the contact parts abutting against the structure, and applying torques (M1, M2) to the case by engaging the engagement parts with the second support part, the torques causing a force in a direction opposite to the insertion direction to act on the insertion part.
Description
Technical Field
The present invention relates to electrical junction boxes.
Background
Conventionally, there is an electrical junction box having an engagement portion that engages with a structure. Patent document 1 discloses a technique of an electrical junction box in which a locking clip provided to protrude from one side wall of a box of the electrical junction box is inserted into and locked to a locking hole of a body panel, and fixed in a cantilever-supported manner.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-104329
Disclosure of Invention
Technical problem to be solved by the invention
There is still room for improvement in suppressing looseness in the engaging portion.
The invention aims to provide an electric junction box capable of restraining looseness in an engagement part.
Means for solving the problems
An electrical junction box according to the present invention is an electrical junction box including a box body for housing electronic components, the box body including: a fixed part fixed to the first support part of the structure; an engaging portion that is inserted into a hole provided in a second support portion of the structure and engages with the second support portion; and an abutting portion abutting against the structure at a position between the fixed portion and the engaging portion, the engaging portion including: an insertion portion inserted into the hole portion; and a fixed portion that protrudes from the insertion portion in a direction intersecting an insertion direction into the hole, and is locked by the second support portion in a state where the insertion portion is inserted into the hole, wherein the fixed portion is fixed to the first support portion, the abutting portion abuts against the structure, and engages with the second support portion via the engagement portion to apply a torque to the case, the torque causing a force in a direction opposite to the insertion direction to act on the insertion portion.
Effects of the invention
The electrical junction box according to the present invention includes a box body for housing electronic components. The box has: a fixed part fixed to the first support part of the structure; an engaging portion inserted into a hole of a second support portion of the structure and engaged with the second support portion; and an abutting portion abutting against the structure at a position between the fixed portion and the engaging portion. The engaging portion has: an insertion portion inserted into the hole portion; and an engaged portion protruding from the insertion portion in a direction intersecting the insertion direction into the hole, and engaged by the second support portion in a state where the insertion portion is inserted into the hole.
The fixed portion is fixed to the first support portion, the contact portion is in contact with the structure, and the engagement portion is engaged with the second support portion, so that torque is applied to the case, and the torque applies a force in a direction opposite to the insertion direction to the insertion portion. According to the electric junction box related to the invention, the following effects are realized: the engaged portion can be pressed toward the second support portion by torque, and looseness can be suppressed.
Drawings
Fig. 1 is a perspective view of an electrical junction box according to an embodiment.
Fig. 2 is a side view of the electrical junction box according to the embodiment.
Fig. 3 is another perspective view of the electrical junction box according to the embodiment.
Fig. 4 is an exploded perspective view of the case according to the embodiment.
Fig. 5 is a perspective view of a fixed portion according to the embodiment.
Fig. 6 is a side view of the left engaging portion according to the embodiment.
Fig. 7 is a sectional view of the left engaging portion according to the embodiment.
Fig. 8 is a side view of the right engaging portion according to the embodiment.
Fig. 9 is a sectional view of the right engaging portion according to the embodiment.
Fig. 10 is a side view showing the fixation of the fixed portion with respect to the first support portion.
Fig. 11 is a side view showing the left engaging portion before engagement with the second support portion is started.
Fig. 12 is a side view of a state in which the contact portion is in contact with the second support portion.
Fig. 13 is a side view of a state in which the engagement portion is engaged with the second support portion.
Fig. 14 is an explanatory diagram of the moment applied to the case.
Fig. 15 is a side view of the case according to modification 1 of the embodiment.
Description of the symbols
1 electric connection box
2 case body
10 frame
11 body part
11e storage chamber
11f insertion part
12. 13 electric wire insertion part
14 fixed part
15. 16 guide part
15a, 16a projecting wall portion
15b, 16b opposed wall parts
17 projecting part
17a engaging projection
18. 19 Ribs
30 lower cover
31 main body
31a first side wall part
31b second side wall part
31c third side wall part
31d fourth side wall part
31e bottom wall part
31f projection
31g engaging recess
32 left leg
33 right leg
34 electric wire through part
35 engaging part
36 left side engaging part (engaging part)
37 Right engaging part (engaging part)
38 insertion part
39 back side locked part
40 front side locked part
39a, 40a conical surface
39b, 40b contact surface
39c, 40c are engaged surfaces
41 abutting part
44 insertion part
45 back side locked part
46 front side locked part
45a, 46a conical surface
45b, 46b contact surface
45c, 46c are clamped and stopped surfaces
47 abutting part
101 first support part
101a through hole
102 second support part
102a lower side
103 left hole part
104 right hole part
Central axes of C1 and C2
Downward force of F1
Upward force of F2, F3
Force of F4 toward front side
Detailed Description
Hereinafter, an electrical junction box according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. The components in the embodiments described below include components that can be easily conceived by those skilled in the art or substantially the same components.
[ embodiment ]
An embodiment will be described with reference to fig. 1 to 14. The present embodiment relates to an electrical junction box. Fig. 1 is a perspective view of an electric connection box according to an embodiment, fig. 2 is a side view of the electric connection box according to the embodiment, fig. 3 is another perspective view of the electric connection box according to the embodiment, fig. 4 is an exploded perspective view of a box body according to the embodiment, fig. 5 is a perspective view of a fixed portion according to the embodiment, fig. 6 is a side view of a left engaging portion according to the embodiment, fig. 7 is a cross-sectional view of the left engaging portion according to the embodiment, fig. 8 is a side view of a right engaging portion according to the embodiment, and fig. 9 is a cross-sectional view of the right engaging portion according to the embodiment. Fig. 7 shows the VII-VII cross section of fig. 4, and fig. 9 shows the IX-IX cross section of fig. 4.
The electrical junction box 1 of the present embodiment is attached to a structure and held by the structure. In the present embodiment, the object to which the electrical junction box 1 is attached is a vehicle such as an automobile. As shown in fig. 1 to 3, the electrical junction box 1 has a box body 2 that houses electronic components. The overall shape of the case 2 of the present embodiment is a rectangular parallelepiped.
As shown in fig. 4, the case 2 has a frame 10 and a lower cover 30. The case 2 of the present embodiment is fixed to the vehicle body in a posture in which the frame 10 is positioned above the lower cover 30 in the vehicle vertical direction Z. The frame 10 has: a main body 11, wire insertion portions 12 and 13, and a fixed portion 14. The main body 11, the wire insertion portions 12 and 13, and the fixed portion 14 are integrally formed of synthetic resin or the like. The main body 11 is a square tubular structure. The cross-sectional shape of the body 11 of the present embodiment is rectangular. In the following description, the "width direction W" represents a longitudinal direction of a rectangle that is a cross-sectional shape of the body 11. The "depth direction D" indicates a short side direction of the rectangle. The width direction W and the depth direction D are orthogonal to each other. The vehicle vertical direction Z is orthogonal to the width direction W and the depth direction D.
The body 11 has a first wall 11a, a second wall 11b, a third wall 11c, and a fourth wall 11 d. The first wall portion 11a and the second wall portion 11b face each other in the width direction W of the frame 11. The third wall portion 11c and the fourth wall portion 11D face each other in the depth direction D of the frame 11. In the following description, the second wall portion 11b side when viewed from the first wall portion 11a is referred to as "right side" and the first wall portion 11a side when viewed from the second wall portion 11b is referred to as "left side" in the width direction W. In the depth direction D, the fourth wall portion 11D side when viewed from the third wall portion 11c is referred to as the "back side", and the third wall portion 11c side when viewed from the fourth wall portion 11D is referred to as the "front side".
The main body 11 has a housing chamber 11e for housing electronic components. The housing chamber 11e is provided with an engaging mechanism which engages with and holds an electronic component. The housing chamber 11e holds electronic components such as relays and fuses.
A plurality of insertion portions 11f are provided on the outer surface of the body portion 11. The protrusion 31f of the lower cover 30, which will be described later, is inserted into the insertion portion 11 f. A claw portion that engages with the protrusion portion 31f is formed on the inner surface of the insertion portion 11 f. The wire insertion portions 12 and 13 are tubular or semi-tubular components protruding from the main body 11. The electric wire insertion portions 12 and 13 are inserted with, for example, an electric wire connected to a power source side of the vehicle, an electric wire connected to an electric device, and the like. In the electrical junction box 1 of the present embodiment, the wire insertion portions 12 and 13 are arranged diagonally in the main body 11.
The fixed portion 14 is fixed to the first support portion 101 of the vehicle. The fixed portion 14 of the present embodiment engages with the first support portion 101 while sliding. The fixed portion 14 is disposed on the fourth wall portion 11d of the main body 11, i.e., the wall portion on the rear surface side. The fixed portion 14 is disposed at the center portion in the width direction W of the fourth wall portion 11 d. As shown in fig. 3 and 5, the fixed portion 14 includes a pair of guide portions 15 and 16, a protrusion 17, and a pair of ribs 18 and 19. The pair of guide portions 15, 16 extend in the vehicle vertical direction Z and face each other in the width direction W of the electrical junction box 1. The guide portions 15 and 16 are each a constituent portion having an L-shaped cross section, and protrude from the outer side surface of the fourth wall portion 11 d.
The guide portion 15 has a protruding wall portion 15a and an opposing wall portion 15 b. The projecting wall portion 15a projects from the fourth wall portion 11d in a direction orthogonal to the fourth wall portion 11 d. The opposing wall portion 15b protrudes from the front end of the protruding wall portion 15a toward the guide portion 16. The facing wall 15b faces the fourth wall 11D in the depth direction D. The guide portion 16 has a protruding wall portion 16a and an opposing wall portion 16 b. The projecting wall portion 16a projects from the fourth wall portion 11d in a direction orthogonal to the fourth wall portion 11 d. The opposing wall 16b protrudes from the tip of the protruding wall 16a toward the guide 15. The facing wall 16b faces the fourth wall 11D in the depth direction D. The leading ends of the facing wall portions 15b, 16b of the guide portions 15, 16 face each other in the width direction W. That is, the L-shaped leading ends of the guide portions 15 and 16 protrude toward each other.
The pair of ribs 18, 19 are disposed between the pair of guide portions 15, 16 in the width direction W. The pair of ribs 18, 19 extend in the vehicle vertical direction Z and face each other in the width direction W. The ribs 18 and 19 are each flat plate-shaped and protrude from the outer surface of the fourth wall portion 11 d. The ribs 18, 19 protrude toward the front ends of the opposing wall portions 15b, 16b of the guide portions 15, 16.
The protrusion 17 is disposed between the ribs 18 and 19 in the width direction W. The projection 17 projects from the outer side surface of the fourth wall 11 d. An engaging projection 17a is provided at the front end of the projection portion 17 in the projection direction. The engaging projection 17a projects from the front end surface 17b of the projection 17. The engaging projection 17a projects in the depth direction D further than the distal ends of the ribs 18, 19.
Referring to fig. 4, the lower cover 30 is a cover member that closes the opening below the frame 10. The lower cover 30 includes a main body 31, leg portions 32 and 33, a wire insertion portion 34, and an engagement portion 35. The main body 31, the leg portions 32, 33, and the wire insertion portion 34 are integrally formed of synthetic resin or the like. The main body 31 is a plate-like component having a rectangular shape in plan view.
The main body 31 has: a first side wall 31a, a second side wall 31b, a third side wall 31c, a fourth side wall 31d, and a bottom wall 31 e. The side walls 31a, 31b, 31c, and 31d protrude from the edge of the bottom wall 31e in a direction intersecting the bottom wall 31 e. The first side wall 31a and the second side wall 31b face each other in the width direction W. The third sidewall 31c and the fourth sidewall 31D face each other in the depth direction D. The side walls 31a, 31b, 31c, and 31d correspond to the walls 11a, 11b, 11c, and 11d of the frame 11.
The side walls 31a, 31b, 31c, 31d are fitted into openings below the frame 10. The outer side surfaces of the side wall portions 31a, 31b, 31c, 31d are provided with strip-shaped protrusions 31f, respectively. The projection 31f projects upward from the upper ends of the side walls 31a, 31b, 31c, and 31 d. The protrusion 31f has an engagement recess 31 g. The protrusion 31f is inserted into the insertion portion 11f of the frame 10 from below. The claw portion provided in the insertion portion 11f engages with the engagement concave portion 31g of the projection portion 31f, thereby locking the projection portion 31 f. The lower cover 30 is assembled to the frame 10 and fixed to the frame 10 by engaging each protrusion 31f with the corresponding insertion portion 11 f.
The wire insertion portion 34 corresponds to the wire insertion portion 13 of the frame 10. The wire insertion portion 34 is a semi-cylindrical component protruding from the main body 31. The wire insertion portion 34 is combined with the insertion portion 13 of the frame 10 to form a cylindrical portion.
The left leg portion 32 and the right leg portion 33 are disposed on the front side wall portion 31c of the main body 31. That is, the legs 32 and 33 are disposed on the front side of the housing chamber 11 e. The left leg portion 32 is provided at the left end portion of the third side wall portion 31 c. The left leg portion 32 protrudes from the third side wall portion 31c toward the front side in the depth direction D. The right leg portion 33 is provided at the right end portion of the third side wall portion 31 c. The right leg 33 projects obliquely rightward from the third side wall 31c toward the front side. In other words, the right leg portion 33 protrudes so as to be distant from the left leg portion 32 as going from the base end toward the leading end.
The engaging portion 35 has a left engaging portion 36 and a right engaging portion 37. The left engaging portion 36 protrudes downward from the left leg portion 32. The right engaging portion 37 protrudes downward from the right leg portion 33. As shown in fig. 3, engagement portion 35 engages with holes 103 and 104 provided in second support portion 102 of the vehicle. The left engaging portion 36 engages with the left hole 103. Right engagement portion 37 engages right hole 104. The second support portion 102 is, for example, a panel constituting a vehicle body of the vehicle. The two hole portions 103, 104 are formed in the same plate, for example.
As shown in fig. 6, the left engaging portion 36 includes an insertion portion 38 and engaged portions 39 and 40. The insertion portion 38 is a cylindrical component and protrudes downward in the vehicle vertical direction Z from the bottom surface 32a of the left leg portion 32. The engaged portions 39 and 40 protrude from the outer peripheral surface of the insertion portion 38. The pair of engaged portions 39 and 40 are disposed at positions symmetrical with respect to the central axis of the insertion portion 38. The rear-side engaged portion 39 protrudes from the insertion portion 38 toward the rear side from the rear side. The front-side locked portion 40 protrudes from the front-side position of the insertion portion 38 toward the front side.
As shown in the sectional view of fig. 7, the engaged portions 39 and 40 protrude obliquely upward from the distal end of the insertion portion 38. The engaged portions 39 and 40 are plate-shaped or columnar components, respectively, and one end thereof is connected to the tip end of the insertion portion 38. The insertion portion 38 is provided with a groove 38a extending along the center axis C1 of the insertion portion 38. One end of each of the engaged portions 39 and 40 is connected to the bottom of the groove 38a, and the other end protrudes from the groove 38 a. The rear-side engaged portion 39 is inclined so as to be away from the insertion portion 38 and toward the rear side as going from the base end connected to the insertion portion 38 toward the front end. The front locked portion 40 is inclined so as to be away from the insertion portion 38 and toward the front side as going from the base end connected to the insertion portion 38 toward the front end.
The engaged portions 39, 40 have tapered surfaces 39a, 40a and abutment surfaces 39b, 40 b. The tapered surfaces 39a, 40a are inclined with respect to the central axis C1 of the insertion portion 38. More specifically, the tapered surface 39a of the back-side engaged portion 39 is inclined so as to be spaced apart from the center axis C1 toward the back side as it goes from the base end to the tip end of the back-side engaged portion 39. The tapered surface 40a of the front locked portion 40 is inclined so as to be apart from the center axis C1 toward the front side as going from the base end to the tip end of the front locked portion 40.
The abutment surfaces 39b and 40b are provided on the distal end side of the engaged portions 39 and 40 with respect to the tapered surfaces 39a and 40 a. The abutment surfaces 39b and 40b are inclined so as to be spaced apart from the center axis C1 as they go toward the distal end sides of the engaged portions 39 and 40. The contact surfaces 39b and 40b contact the inner peripheral surface of the left hole 103 when the left engaging portion 36 is opened and closed in the left hole 103.
The bottom surface 32a of the left leg 32 is inclined with respect to the depth direction D. The bottom surface 32a is inclined so as to face the front surface side and face the upper side in the vehicle vertical direction Z. In other words, the bottom surface 32a is inclined so as to face upward in the vehicle vertical direction Z as it is separated from the fixed portion 14 of the frame 10 toward the front side. The insertion portion 38 is inclined with respect to the vehicle vertical direction Z in accordance with the inclination of the bottom surface 32 a. The insertion portion 38 is inclined toward the front surface side as it goes toward the vehicle lower side. In other words, the insertion portion 38 is inclined toward the front side with the tip end facing the protruding direction from the bottom surface 32 a.
The left leg portion 32 is provided with an abutment portion 41. The contact portion 41 is a protrusion protruding from the bottom surface 32 a. The contact portion 41 is provided on the back surface side of the left engaging portion 36. That is, the contact portion 41 is disposed between the left engaging portion 36 and the fixed portion 14 of the frame 10. The contact portion 41 is, for example, a rib linearly extending in the width direction W. The contact portion 41 is located closer to the back surface side than the rear surface side engaged portion 39 in the depth direction D, and is located near the rear surface side engaged portion 39.
As shown in fig. 8, the right engaging portion 37 includes an insertion portion 44 and engaged portions 45 and 46. The insertion portion 44 is a cylindrical component and protrudes downward in the vehicle vertical direction Z from the bottom surface 33a of the right leg portion 33. The engaged portions 45 and 46 protrude from the outer peripheral surface of the insertion portion 44. The pair of engaged portions 45 and 46 are disposed at positions symmetrical with respect to the central axis C2 of the insertion portion 44. The rear-side engaged portion 45 protrudes from the insertion portion 44 toward the rear side from the rear side. The front-side locked portion 46 protrudes from the front-side position of the insertion portion 44 toward the front side.
As shown in the sectional view of fig. 9, the engaged portions 45 and 46 protrude obliquely upward from the distal end of the insertion portion 44. The engaged portions 45 and 46 are plate-shaped or columnar components, respectively, and one end thereof is connected to the tip end of the insertion portion 44. The insertion portion 44 is provided with a groove 44a extending along the center axis C2 of the insertion portion 44. One end of each of the engaged portions 45 and 46 is connected to the bottom of the groove 44a, and the other end protrudes from the groove 44 a. The rear-side engaged portion 45 is inclined so as to be away from the insertion portion 44 and toward the rear side as going from the base end connected to the insertion portion 44 toward the tip end. The front-side engaged portion 46 is inclined so as to be separated from the insertion portion 44 and directed toward the front side as going from the base end connected to the insertion portion 44 toward the tip end.
The engaged portions 45, 46 have tapered surfaces 45a, 46a and abutment surfaces 45b, 46 b. The tapered surfaces 45a, 46a are inclined with respect to the central axis C2 of the insertion portion 44. More specifically, the tapered surface 45a of the back-side engaged portion 45 is inclined so as to be away from the center axis C2 toward the back side as it goes from the base end to the tip end of the back-side engaged portion 45. The tapered surface 46a of the front engaged portion 46 is inclined so as to be spaced apart toward the front side with respect to the center axis C2 as it goes from the base end to the tip end of the front engaged portion 46.
The abutment surfaces 45b and 46b are provided on the leading end side of the engaged portions 45 and 46 with respect to the tapered surfaces 45a and 46 a. The abutment surfaces 45b and 46b are inclined so as to be spaced apart from the center axis C2 as they go toward the distal end sides of the engaged portions 45 and 46. The abutment surfaces 45b and 46b abut against the inner peripheral surface of the right hole 104 when the right engagement portion 37 is engaged with the right hole 104.
The bottom surface 33a of the right leg portion 33 is inclined with respect to the depth direction D. The bottom surface 33a is inclined so as to face the front surface side and face the upper side in the vehicle vertical direction Z. In other words, the bottom surface 33a is inclined so as to face upward in the vehicle vertical direction Z as it is separated from the fixed portion 14 of the frame 10 toward the front side. The insertion portion 44 is inclined with respect to the vehicle vertical direction Z in accordance with the inclination of the bottom surface 33 a. The insertion portion 44 is inclined toward the front surface side as it goes toward the vehicle lower side. In other words, the insertion portion 44 is inclined toward the front side with the tip end facing the protruding direction from the bottom surface 33 a.
The right leg 33 is provided with an abutment portion 47. The contact portion 47 is a protrusion protruding from the bottom surface 33 a. The contact portion 47 is disposed on the rear side of the right engagement portion 37. That is, the contact portion 47 is disposed between the right engaging portion 37 and the fixed portion 14 of the frame 10. The contact portion 47 is, for example, a rib linearly extending in the width direction W. The extending direction of the contact portion 47 may be a direction orthogonal to a line connecting the fixed portion 14 and the right engagement portion 37. The contact portion 47 is located on the rear side of the rear side engaged portion 45 in the depth direction D and is located near the rear side engaged portion 45.
The first support portion 101 and the second support portion 102 shown in fig. 3 and the like are target structures to which the electrical junction box 1 is fixed. The first support portion 101 and the second support portion 102 are formed of a metal such as a steel plate. The first support portion 101 is a rectangular plate-shaped component. The first support portion 101 extends upward along the vehicle vertical direction Z. The first support portion 101 may be, for example, a part of a panel constituting a body of the vehicle, or may be a bracket fixed to the panel. The upper end side of the first support portion 101 is a free end, and the lower end side is fixed to the vehicle body. A through hole 101a is formed near the upper end of the first support 101.
The second support portion 102 is a plate-shaped component. The left engaging portion 36 and the right engaging portion 37 may be fixed to the same member or may be fixed to separate members. The second support portion 102 extends in the vehicle front-rear direction and the vehicle width direction, and is typically orthogonal to the vehicle vertical direction Z. Second support portion 102 has left hole 103 and right hole 104. The holes 103 and 104 are through holes that penetrate the second support portion 102 in the plate thickness direction. Holes 103 and 104 are formed so that engagement portions 36 and 37 can be inserted therethrough, respectively. Holes 103 and 104 in the present embodiment have a circular shape corresponding to the cross-sectional shape of insertion portions 38 and 44.
The electrical junction box 1 is assembled to the vehicle body in a state where the lower cover 30 is assembled to the frame 10. The housing 2 is fixed to the vehicle body by engaging the fixed portion 14 with the first support portion 101 and then engaging the engaging portion 35 with the second support portion 102.
As shown in fig. 10, the fixed portion 14 of the case 2 is engaged with the first support portion 101 while sliding from the upper side toward the lower side in the vehicle vertical direction Z. The first support portion 101 is inserted between the guide portions 15, 16. As shown in fig. 3, the first support portion 101 is guided by the opposed wall portions 15b, 16b of the guide portions 15, 16 and the ribs 18, 19. The fixed portion 14 is pressed downward in the vehicle vertical direction Z, and the engagement projection 17a of the projection 17 engages with the through hole 101 a. When the engaging projection 17a is engaged with the through hole 101a, the engagement of the fixed portion 14 with respect to the first support portion 101 is completed. The opposing wall portions 15b and 16b sandwich the first support portion 101 between the ribs 18 and 19, and restrict relative movement of the case 2 in the depth direction D with respect to the first support portion 101. The engaging projection 17a restricts relative movement of the case 2 with respect to the first support portion 101 in the vehicle vertical direction Z.
When the fixed portion 14 is engaged with the first support portion 101, the engaging portion 35 is engaged with the second support portion 102. Fig. 11 is a side view showing the left engaging portion 36 when the fixed portion 14 is engaged with the first support portion 101. The electrical junction box 1 of the present embodiment is configured such that the engaging portion 35 does not engage with the second support portion 102 when the fixed portion 14 engages with the first support portion 101. For example, the case 2 is designed such that, when the fixed portion 14 is engaged with the first support portion 101, a part of the left engaging portion 36 is inserted into the left hole 103, and the left engaging portion 36 and the second support portion 102 do not reach the engaged state.
In the state shown in fig. 11, a force F1 directed downward in the vehicle vertical direction Z is applied to the left leg portion 32, whereby the case 2 is bent and deformed, and the left engagement portion 36 is further inserted into the left hole 103. The electrical junction box 1 of the present embodiment is configured such that the contact portions 41 and 47 contact the second support portion 102 before the engagement portions 36 and 37 engage the second support portion 102. Referring to fig. 12, when the left engaging portion 36 is inserted into the left hole 103, the contact portion 41 comes into contact with the second support portion 102 before the locked state of the front locked portion 40 is established. Here, the locked state of the front locked portion 40 means a state in which the locked surface 40c has passed through the left hole 103, that is, a state in which the locked surface 40c is positioned below the lower surface 102a of the second support portion 102 in the vehicle vertical direction Z.
As shown in fig. 12, the engaged surface 40c does not completely pass through the left hole 103 at the time when the contact portion 41 contacts the second support portion 102. In other words, the front locked portion 40 is in a state where the tapered surface 40a is in contact with the inner peripheral surface of the left hole 103. From this state, if a force F1 is further applied to push the vehicle up-down direction Z down, the case 2 is further deformed by bending, and the front locked portion 40 is brought into a locked state. The engagement of the left engaging portion 36 with respect to the second support portion 102 is completed by the locking portion 40 being in the locked state on the front side. The engagement of the right engagement portion 37 with the second support portion 102 is performed in the same manner.
Fig. 13 is a side view showing a state in which the left engaging portion 36 and the right engaging portion 37 are engaged with the second support portion 102. Torques M1 and M2 are applied to the case 2. The torque M1 is a torque acting on the left leg 32. Since the contact portion 41 is in contact with the second support portion 102, the torque M1 biases the portion of the left leg portion 32 on the front side of the contact portion 41 toward the upper side in the vehicle vertical direction Z. Therefore, the force F2 directed upward in the vehicle vertical direction Z is applied to the left engaging portion 36 by the torque M1. In other words, the torque M1 causes a force F2 in the opposite direction to the insertion direction into the left hole 103 to act on the insertion portion 38 of the left engagement portion 36. The front-side engaged surface 40c of the engaging portion 40 is pressed toward the lower surface 102a of the second support portion 102 by the force F2.
Therefore, the abutting portion 41 and the engaged surface 40c sandwich the second support portion 102 from both sides in the vehicle vertical direction Z by the torque M1. A state is achieved in which the contact portion 41 and the engaged surface 40c are in contact with each other at a so-called zero distance, in which a gap between the second support portion 102 and the contact portion 41 is substantially absent. By the torque M1, the contact portion 41 and the engaged surface 40c are pressed toward the second support portion 102, and the backlash between the left engaging portion 36 and the second support portion 102 is substantially prevented.
The torque M2 is a torque acting on the right leg portion 33. Since the contact portion 47 contacts the second support portion 102, the torque M2 biases the portion of the right leg portion 33 on the front side of the contact portion 47 upward in the vehicle vertical direction Z. Therefore, a force F3 directed upward in the vehicle vertical direction Z is applied to the right engagement portion 37 by the torque M2. In other words, torque M2 causes force F3 in the direction opposite to the insertion direction into right hole 104 to act on insertion portion 44 of right engagement portion 37. The engaged surface 46c of the front engaged portion 46 is pressed toward the lower surface 102a of the second support portion 102 by the force F3.
Therefore, the abutting portion 47 and the engaged surface 46c sandwich the second support portion 102 from both sides in the vehicle vertical direction Z by the torque M2. A state is achieved in which the contact portion 47 and the engaged surface 46c are in contact with each other at a so-called zero distance, in which a gap between the second support portion 102 and the contact portion 47 does not substantially exist. By the torque M2, the contact portion 47 and the engaged surface 46c are pressed toward the second support portion 102, and the backlash between the right engagement portion 37 and the second support portion 102 is substantially prevented.
Thus, the electrical junction box 1 of the present embodiment can reduce the backlash between the engaging portion 35 and the second support portion 102, and reduce the vibration of the box body 2. The electronic components and the engaging portion 35 stored in the storage chamber 11e are protected from the vibration by reducing the vibration. The case 2 is bent and deformed to apply tension to the locking of the front-side locked portions 40 and 46 (locked surfaces 40c and 46c), and thus, looseness is not likely to occur.
As described above, the electrical junction box 1 of the present embodiment includes the box body 2 that houses the electronic components. The case 2 has: fixed portion 14, engaging portion 35, and contact portions 41 and 47. The fixed part 14 is fixed to the first support part 101 of the structure. The engaging portion 35 is inserted into holes 103 and 104 of the second support portion 102 of the structure, and engages with the second support portion 102. The contact portions 41 and 47 contact the structure at a position between the fixed portion 14 and the engagement portion 35.
Engaging portion 35 has insertion portions 38, 44 inserted into holes 103, 104, and engaged portions 40, 46. The engaged portions 40 and 46 project from the insertion portions 38 and 44 in a direction intersecting the insertion direction of the holes 103 and 104. The engaged portions 40, 46 are engaged with the second support portion 102 in a state where the insertion portions 38, 44 are inserted into the holes 103, 104.
The fixed portion 14 is fixed to the first support portion 101, the contact portions 41 and 47 contact the structure, and the engaging portion 35 engages with the second support portion 102 to apply the torques M1 and M2 to the case 2. The rotational moments M1 and M2 cause forces F2 and F3 in the opposite direction to the insertion direction to act on the insertion portions 38 and 44. According to the electric junction box 1 of the present embodiment, the forces F2 and F3 based on the torques M1 and M2 can be maintained in the state where the engaged portions 40 and 46 are engaged with the second support portion 102. Therefore, the electrical junction box 1 of the present embodiment can suppress the backlash between the engaging portion 35 and the second support portion 102, and suppress the vibration.
The case 2 of the present embodiment has a housing chamber 11e for housing electronic components. The fixed portion 14 and the engaging portion 35 are disposed on different sides of the housing chamber 11 e. The fixed portion 14 disposed on one side with respect to the housing chamber 11e is fixed to the first support portion 101 and held by the first support portion 101. The engaging portion 35 disposed on the other side with respect to the housing chamber 11e engages with the second support portion 102. By suppressing the backlash between the engaging portion 35 and the second support portion 102, the backlash of the entire electrical junction box 1 is also suppressed as described below.
In the electric connection box 1 of the present embodiment, as shown in fig. 14, a torque M3 acts on the fixed portion 14. The force F4 directed toward the front surface side acts on the fixed portion 14 by the torque M3. The opposing wall portions 15b and 16b are pressed toward the first support portion 101 by the force F4. As a result, the play between the fixed portion 14 and the first support portion 101 is suppressed. Therefore, in the electrical junction box 1 of the present embodiment, the 3 engagement portions with the vehicle body are each prevented from rattling with respect to the vehicle body. The opposing wall portions 15b and 16b of the fixed portion 14 of the present embodiment face the first support portion 101 from the side opposite to the engaging portion 35 side in the depth direction D. The opposing wall portions 15b and 16b are in surface contact with the first supporting portion 101 by the force F4, and can appropriately suppress play with the first supporting portion 101.
The case 2 of the present embodiment has legs 32 and 33 projecting toward the side opposite to the fixed portion 14. The contact portions 41, 47 and the engagement portion 35 are provided on the bottom surfaces 32a, 33a of the leg portions 32, 33. Bottom surfaces 32a and 33a are facing surfaces facing second support portion 102. The left leg portion 32 is provided with a left engaging portion 36 and an abutting portion 41 corresponding to the left engaging portion 36. The right leg portion 33 is provided with a right engaging portion 37 and an abutting portion 47 corresponding to the right engaging portion 37. The engaging portions 36, 37 and the corresponding abutment portions 41, 47 are provided at the same leg portions 32, 33, so that the bending deformation in the case 2 is easily designed. For example, by bending and deforming the leg portions 32, 33, desired torques M1, M2, M3 are likely to occur.
In the electrical junction box 1 of the present embodiment, the contact portions 41 and 47 are protruding portions protruding from the bottom surfaces 32a and 33a of the leg portions 32 and 33. Such contact portions 41 and 47 having the projecting shapes can suppress the deviation of the fulcrum positions of the torques M1 and M2.
[ 1 st modification of embodiment ]
A modification 1 of the embodiment will be described. Fig. 15 is a side view showing an important part of the case according to modification 1 of the embodiment. The case 2 of modification 1 is different from the above-described embodiment in that bottom surfaces 32a and 33a of the leg portions 32 and 33 are parallel to the depth direction D. Even with this configuration, torques M1 and M2 can be applied to bring the engaged surfaces 40c and 46c into contact with the second support portion 102. When the second support portion 102 is a plate parallel to the depth direction D, the contact portions 41 and 47 are preferably protrusions protruding from the bottom surfaces 32a and 33 a.
[ 2 nd modification of embodiment ]
A modification 2 of the embodiment will be described. The manner in which the fixed portion 14 engages with the first support portion 101 is not limited to the illustrated manner. The fixed portion 14 may be engaged with the first support portion 101 by a fastening member such as a screw. The fixed portion 14 may be engaged with the first support portion 101 by a lock mechanism or the like, which is different from the example.
The number of the engaging portions 35 is not limited to 2. For example, the engaging portion 35 may have another engaging portion in addition to the left engaging portion 36 and the right engaging portion 37. The number of the engaging portions 35 may be 1.
The shape and arrangement of the abutting portions 41 and 47 are not limited to the illustrated example. The contact portions 41 and 47 may be bent portions, stepped portions, or the like of the leg portions 32 and 33, instead of the protrusions such as ribs.
The contents disclosed in the above-described embodiment and modifications can be combined and implemented as appropriate.
Claims (3)
1. An electric junction box is characterized in that,
the electric connection box is provided with a box body for accommodating electronic elements,
the box body is provided with:
a main body;
a fixed portion that is disposed on the body and fixed to a first support portion of a structure;
an engaging portion that is disposed in the main body, that is inserted into a hole provided in a second support portion of the structure, and that engages with the second support portion; and
an abutting portion that is disposed on the body and abuts against the structure at a position between the fixed portion and the engaging portion,
the engaging portion includes: an insertion portion inserted into the hole portion; and a locked portion that protrudes from the insertion portion in a direction intersecting an insertion direction into the hole, and is locked by the second support portion in a state where the insertion portion is inserted into the hole,
the fixed portion is fixed to the first support portion, the abutting portion abuts against the structure, and the engaging portion engages with the second support portion to apply a torque to the case,
the case is configured such that the engaging portion is engageable with the second support portion by bending and deforming the main body in a state where the contact portion is in contact with the structure,
the torque is generated by bending deformation of the main body and causes a force in a direction opposite to the insertion direction to act on the insertion portion.
2. An electrical connection box according to claim 1,
the case has a receiving chamber for receiving electronic components,
the fixed portion and the engaging portion are disposed on different sides with the storage chamber therebetween.
3. An electrical connection box according to claim 1 or 2,
the case has a leg portion protruding toward the side opposite to the fixed portion side,
the engaging portion and the contact portion are provided on an opposing surface of the leg portion that opposes the second support portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017081110A JP6611366B2 (en) | 2017-04-17 | 2017-04-17 | Electrical junction box |
| JP2017-081110 | 2017-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108767779A CN108767779A (en) | 2018-11-06 |
| CN108767779B true CN108767779B (en) | 2020-06-30 |
Family
ID=64010682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810339515.2A Expired - Fee Related CN108767779B (en) | 2017-04-17 | 2018-04-16 | Electrical junction box |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6611366B2 (en) |
| CN (1) | CN108767779B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6912443B2 (en) * | 2018-11-29 | 2021-08-04 | 矢崎総業株式会社 | Wire fixing structure, electrical junction box, and wire harness |
| JP7118562B2 (en) * | 2019-07-19 | 2022-08-16 | 矢崎総業株式会社 | electric junction box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914855A1 (en) * | 2006-10-20 | 2008-04-23 | Sumitomo Wiring Systems, Ltd. | A vehicle-mountable electrical connection box and mounting method therefor |
| JP5641240B2 (en) * | 2011-04-28 | 2014-12-17 | 住友電装株式会社 | Electrical junction box |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH098469A (en) * | 1995-06-16 | 1997-01-10 | Yazaki Corp | Block fixing device |
| JP4083456B2 (en) * | 2002-04-02 | 2008-04-30 | 矢崎総業株式会社 | Box fixing structure |
| JP5595811B2 (en) * | 2010-07-06 | 2014-09-24 | 矢崎総業株式会社 | Electrical junction box |
| CN205863835U (en) * | 2016-08-05 | 2017-01-04 | 合隆防爆电气有限公司 | The junction box being easy to use |
-
2017
- 2017-04-17 JP JP2017081110A patent/JP6611366B2/en not_active Expired - Fee Related
-
2018
- 2018-04-16 CN CN201810339515.2A patent/CN108767779B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914855A1 (en) * | 2006-10-20 | 2008-04-23 | Sumitomo Wiring Systems, Ltd. | A vehicle-mountable electrical connection box and mounting method therefor |
| JP5641240B2 (en) * | 2011-04-28 | 2014-12-17 | 住友電装株式会社 | Electrical junction box |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018182933A (en) | 2018-11-15 |
| JP6611366B2 (en) | 2019-11-27 |
| CN108767779A (en) | 2018-11-06 |
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