CN207518966U

CN207518966U - Electronic control unit and its shell

Info

Publication number: CN207518966U
Application number: CN201721430741.9U
Authority: CN
Inventors: 沈康
Original assignee: Bosch Automotive Products Suzhou Co Ltd
Current assignee: Bosch Automotive Products Suzhou Co Ltd
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2018-06-19
Anticipated expiration: 2027-10-31

Abstract

The utility model discloses a kind of electronic control unit and its shell, is assembled by lower cover and upper cover body and separates receiving space and exterior space, it is characterised in that：The upper cover body includes side wall and roof；The lower cover includes bottom wall and the barricade that extends to the upper cover body direction of outer periphery along the bottom wall；There is stage portion, the stage portion has the upper surface extended from the barricade to the bottom wall direction on the gear face of wall；The distance of the outer edge of the stage portion to the side wall is more than or equal to 0.6 millimeter；The side wall is resisted against the barricade.The electronic control unit has good water resistance.

Description

Electronic control unit and its shell

Technical field

The utility model is related to a kind of control device more particularly to a kind of electronic control units for being used to control vehicle-mounted air bag And its shell.

Background technology

It is applicable that control device applied to motor vehicles for example controls the electronic control unit of vehicle-mounted air bag to be commonly equipped with In the shell of the structure member mounted on motor vehicles.In the shell, printed circuit board bearing electronic control unit realizes work( Electronic component needed for energy.In addition, the shell of electronic control unit is equipped with the electric connector for wiring, provides and pass Communication between sensor, actuator or other control devices.

The printed circuit board of electronic control unit is covered by shell, can prevent extraneous complicated harsh environment to electronics control Device processed damages.The printed circuit board of electronic control unit is protected by shell, in such as vehicle by can be with when hitting Reliably start air bag so as to protect the safety of occupant.

The shell of electronic control unit generally includes upper cover body and lower cover, and lower cover is installed together protection with upper cover body The back side of printed circuit board.In the case where complicated harsh working environment for example soaks, flow can be because of capillarity The inner space of shell is penetrated into along the gap between lower cover and upper cover body, influences the normal work of electronic control unit, Therefore new technical solution is needed to overcome the problems, such as this.

Utility model content

In view of one or more problem in the prior art, the technical solution of the utility model are realized in 's：

A kind of shell of electronic control unit is assembled by lower cover and upper cover body and separates receiving space and outside sky Between, it is characterised in that：The upper cover body includes side wall and roof；The lower cover includes bottom wall and the periphery along the bottom wall While the barricade extended to the upper cover body direction；There is stage portion, the stage portion has by institute on the gear face of wall State the smooth upper surface that barricade extends to the bottom wall direction；The distance of the edge of the stage portion and the side wall is more than etc. In 0.6 millimeter.The barricade is resisted against on the inside of the side wall.

Preferably, the upper surface of the stage portion includes mounting surface, and the mounting surface is resisted against described for the side wall The stopper section of the side wall is positioned during barricade；The width of the mounting surface is more than or equal to 0.3 millimeter.

Preferably, the upper surface of the stage portion further includes inclined-plane, and the inclined-plane is connect with the mounting surface, the inclined-plane Extended by the installation towards the direction of the bottom wall；The stopper section of the inclined-plane and the side wall defines the notch；Institute The width for stating inclined-plane is more than or equal to 1.5 millimeters.

Preferably, the inclined-plane is extended to the outer surface of the stage portion by the installation towards the direction of the bottom wall.

Preferably, the angle between the stopper section of the side wall and the inclined-plane is more than or equal to 25 degree and less than 90 degree.

Preferably, the stage portion is upwardly extended in the gear face of wall by the neighboring of the bottom wall, described The height of stage portion is less than the height of the bottom wall.

Preferably, the upper cover body and the lower cover are provided with seaming slot on one of them, are provided with card on another Wedge, the card wedge are snapped in the seaming slot and connect the upper cover body with the lower cover.

Preferably, the upper cover body and the lower cover are made of plastic material.

The utility model additionally provides a kind of electronic control unit, which is characterized in that it includes electronics control as described above The shell of device processed, fitting printed circuit board component in the receiving space.

Preferably, the first opening is formed on the side wall；The electronic control unit includes the electricity for being mounted on the first opening Connector；The stage portion supports the electric connector in first opening.

According to the utility model proposes electronic control unit shell and with the shell electronic control unit tool For preferable water resistance, ensure the normal work of electronic control unit under complicated harsh working environment.

Description of the drawings

Embodiment or technical solution of the prior art in order to illustrate more clearly of the utility model, below to embodiment Or attached drawing needed to be used in the description of the prior art does simple introduction.It should be evident that the accompanying drawings in the following description is this Some embodiments of utility model, to those skilled in the art, without having to pay creative labor, It can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural decomposition diagram according to the electronic control unit of the utility model specific embodiment；

Fig. 2 is the vertical view of the electronic control unit in Fig. 1；

Fig. 3 is the dimensional structure diagram of the lower cover of the electronic control unit in Fig. 1；

Fig. 4 is the upper cover body of the electronic control unit in Fig. 1 and the cross-sectional view of lower cover junction.

Specific embodiment

As the embodiment of the utility model, figures 1 and 2 show that with cuboid shape or substantially square The control device of bulk shape housing.The work of the vehicle-mounted air bag of such as motor vehicles of control device control in the present embodiment Make.The control device is typically located at the comparatively safe region of vehicle and leads to for example between pilot set and assistant driver seat It is commonly referred to as in the region of channel, for lighting a kind of electronics of the igniter of vehicle-mounted air bag when vehicle crashes Control device 1.With reference to figure 1, electronic control unit 1 includes：Shell 2, printed circuit-board assembly 3 and electric connector 5.

Shell 2 includes upper cover body 20 and lower cover 4, and shell 2 defines a three-dimensional receiving space A, printed circuit board Component 3 be mounted on receiving space A in, so as to shell 2 can to printed circuit-board assembly 3 apply protection for example prevent dust and Water droplet enters receiving space A and resists extraneous hit.Upper cover body 20 is the box like structure being made of plastic material, specifically, Upper cover body 20 is made of fiber glass reinforced polypropylene.Upper cover body 20 includes roof 21, side wall 22, and upper cover body 20 further includes empty with receiving Between the first opening 2c for being connected along plugging direction of A, in the present embodiment, the first opening 2c is formed on side wall 22, roof 21 and side Wall 22 collectively defines the first opening 2c.In the installation direction along printed circuit-board assembly 3, side wall 22 is opposite with roof 21 The second opening of position restriction 2d.

With reference to figure 2, have on side wall 22 to receiving space A sunken insides, recess forms the first mounting portion 9 and the second peace Dress portion 10.First mounting portion 9 and the second mounting portion 10 are respectively provided with supplied for electronic control device 1 and install to tying in motor vehicle body First installation component 7 and the second installation component 8 at structure position.First installation component 7 and the second installation component 8 are at least partly Metal component in embedded upper cover body 20.In the present embodiment, shape is also distinguished on the first installation component 7, the second installation component 8 Into the first mounting hole 71, the second mounting hole 81 having through installation component, with being inserted into the first mounting hole 71, the second mounting hole 81 Fastener carries out installing electronic control unit 1 to the structure position of motor vehicles.In the present embodiment, the first installation component 7, Two installation components 8 are integrally formed with upper cover body 20 for example, by embedding and injection molding technique.

In addition, relatively two edges of the side wall 22 at the second opening 2d respectively further comprise two by 22 edge of side wall The seaming slot 23 stretched out to 4 direction of lower cover.

The electronics member device of the vehicle-mounted air bag work of control that printed circuit-board assembly 3 includes printed circuit board and is arranged on Part.The electric connector 5 that printed circuit-board assembly 3 is gone back and is attached and communicates with external equipment is connect, and electric connector 5 is mounted on First opening 2c.Electric connector 5 includes insulating body and multiple conducting terminals.Multiple conducting terminals are electrically connected to printed circuit board On wiring circuit pattern, specifically, conducting terminal includes multiple external terminals and multiple inner terminals, and external terminal and inner terminal connect It connects, the external equipment thus and with inner terminal connecting external device such as sensor class, actuator class is electrically connected.Meanwhile outside The hole that terminal is stretched on printed circuit-board assembly 3 is connect with printed circuit board.Further, in the insulating body of electric connector 5 On, equipped be inserted into be formed in printed circuit board location hole locator protrusions, in the above manner electric connector 5 be firmly fixed To printed circuit-board assembly 3.

Lower cover 4 with the plastics of 20 phase same material of upper cover body by being integrally formed.Lower cover 4 protects printed circuit-board assembly 3 The back side.Specifically, lower cover 4 is installed together by the way of such as mechanical connection with upper cover body 20, so as to closed above Second opening 2d of body 20 and form receiving space A.Further, lower cover 4 is formed integrally as circumferential edges and slightly erects Shallow box-like.Specifically, extend in the neighboring of the bottom wall 41 of generally rectangular shaped shape (each side) to 20 direction of upper cover body The continuous barricade 42 perpendicular to bottom wall 41, therefore lower cover 4 is integrally formed to be open upward.

In addition, the outer surface of barricade 42 is additionally provided with several steps equally upwardly extended by the neighboring of bottom wall 41 Portion 46.Stage portion 46 supports electric connector 5 when electric connector 5 is installed to the first opening 2c.

Card wedge 47 is additionally provided on the outer surface of barricade 42, card wedge 47 is used for the mistake installed in lower cover 4 and upper cover body 20 The seaming slot 23 set on the side wall 22 of upper cover body 20 is snapped in journey, so as to which lower cover 4 and upper cover body 20 be fixed.

With reference to figure 3 and Fig. 4, when upper cover body 20 and lower cover 4 are fixedly installed togather, the inside of side wall 22 is resisted against barricade 42.In the present embodiment, it is upper surface 50 generally one that the upper surface 50 of stage portion 46 extends from barricade 42 to 41 direction of bottom wall The inclined-plane tilted down.Further, upper surface 50 includes mounting surface 48 and inclined-plane 49, and inclined-plane 49 is connect with mounting surface 48.Peace The stopper section 24 for being used to position side wall 22 when stopper section 24 is resisted against barricade 42 parallel with bottom wall 41 of dress face 48；Inclined-plane 49 is by installing Play the outer surface that stage portion 46 is extended up to 41 direction of bottom wall of lower cover 4, the stopper section 24 on inclined-plane 49 and side wall 22 in face 48 Notch B is formed between side wall 22 and stage portion 46, notch B is triangular shaped in the present embodiment.Further, the peace The width in dress face (48) is more than or equal to 0.3 millimeter and the width of the inclined-plane (49) is more than or equal to 1.5 millimeters.

For the facility that upper cover body 20 and lower cover 4 are installed, the upper surface 51 of barricade 42 is additionally provided with chamfering 26.The present embodiment In, the upper surface 51 of barricade 42 supports the first mounting portion 9 and/or the second mounting portion 10.

When being in the electronic control unit 1 that notch B is formed between side wall 22 and stage portion 46 in the environment of soaking, water The stopper section 24 that drop flows to inclined-plane 49 and side wall 22 along the side wall 22 of upper cover body 20 is formed between side wall 22 and stage portion 46 Notch B.Accumulating in the water droplet at notch B under gravity can not be along inclined-plane 49 between side wall 22 and stage portion 46 It is moved at gap, i.e., water droplet can slide outflow notch B along inclined-plane 49, therefore not penetrate into the inside of electronic control unit 1.By This protects the normal work of the electronic component of electronic control unit 1.In the present embodiment, inclined-plane 49 and side wall 22 only It is engaged between stopper 24 and forms angle, which is more than or equal to 25 degree and less than 90 degree.Further, the side of stage portion 46 Edge and the distance of such as outer surface edge of side wall 22 of side wall 22 are more than or equal to 0.6 millimeter.

In the present embodiment, the outer surface of side wall 22 and stage portion 46 is leveled up and down in a plane, that is, side The outer surface of wall 22 and stage portion 46 is in the approximately the same plane perpendicular to bottom wall 41.Those skilled in the art should know, In other embodiments, the outer surface of side wall 22 and stage portion 46 can not also be in approximately the same plane, and side wall 22 and platform Notch B is formed between rank portion 46 and stage portion 46 is there are during inclined-plane 49, and wall 22 and stage portion 46 can be equally entered to avoid water droplet Between gap in.

In addition, it is erected on the inner surface of the bottom wall 41 of lower cover 4 fixed there are two being installed for printed circuit-board assembly 3 Fixed part 43.Two fixed parts 43 are further connected to the opposite inner surface of barricade 42.In the upper end of fixed part 43, formed There is the supporting surface 44 of the flat condition of supporting printing board component 3, on these supporting surfaces 44, be formed with for printed circuit board group 3 fixed second hole 45 of part.

Further, two the second holes 45 the first mounting hole 71, the second mounting hole 81 with being set in upper cover body 20 respectively Alignment；The hole the 1st being aligned with the second hole 45 is also equipped on printed circuit-board assembly 3.Fastener such as bolt passes through second The first mounting hole 71, the second mounting hole 81 set on the first hole 31 and upper cover body 20 on hole 45, printed circuit-board assembly 3 When the upper cover body 20 of electronic control unit 1 is installed on the structure position of motor vehicles thus by upper cover body 20, printed circuit Plate component 3 and lower cover 4 are fixed together, under printed circuit-board assembly 3 is also fixed on the state supported by each fixed part 43 In cover 4.

In the present embodiment, the upper cover body 20 of electronic control unit 1 and the structure position of motor vehicles are by being configured at the Fastener (not shown) in one mounting hole 71, the second mounting hole 81 links together.In order to improve the rigidity of connection, can By property and anti-loose ability, fastener uses pretension bolt, and further, when fastener is metal bolts, electronic control unit 1 is also It is grounded by metal bolts.

It these are only specific embodiment according to the present utility model, it is all the application's not to limit the application Any modification, equivalent replacement or improvement made within spirit and principle etc., should be included in the scope of protection of the utility model Within.Such as card wedge 47 can also be arranged on the side wall 22 of upper cover body 2, seaming slot 23 can also be arranged on the gear of lower cover 4 On wall 42.For another example, as long as the upper surface 50 of stage portion 46 is the smooth inclined surface example for being rendered as downward (41 direction of bottom wall) Such as plane or curved surface or its combination, it is possible to it realizes and is moved at the gap that water droplet will not be between side wall 22 and stage portion 46, The inside of electronic control unit will not be entered.

Claims

1. a kind of shell of electronic control unit (2) is assembled by lower cover (4) and upper cover body (20) and separates receiving space (A) and exterior space, it is characterised in that：

The upper cover body (20) includes side wall (22) and roof (21)；

The lower cover (4) is prolonged including bottom wall (41) and along the outer periphery of the bottom wall (41) to the upper cover body (20) direction The barricade (42) stretched；There is stage portion (46), the stage portion (46) has by the gear on the outer surface of the barricade (42) The smooth upper surface (50) that wall (42) extends to the bottom wall (41) direction；The outer edge of the stage portion (46) is to the side The distance of wall (22) is more than or equal to 0.6 millimeter；

The barricade (42) is resisted against on the inside of the side wall (22).

2. the shell (2) of electronic control unit according to claim 1, which is characterized in that the stage portion (46) it is upper Surface (50) includes mounting surface (48), and the mounting surface (48) positions when being resisted against the barricade (42) for the side wall (22) The stopper section (24) of the side wall (22)；The width of the mounting surface (48) is more than or equal to 0.3 millimeter.

3. the shell (2) of electronic control unit according to claim 2, which is characterized in that the stage portion (46) it is upper Surface (50) further includes inclined-plane (49), and the inclined-plane (49) connect with the mounting surface (48), and the inclined-plane (49) is by the peace Dress face (48) extends to the direction of the bottom wall (41)；The stopper section (24) of the inclined-plane (49) and the side wall (22) defines Notch (B)；The width of the inclined-plane (49) is more than or equal to 1.5 millimeters.

4. the shell (2) of electronic control unit according to claim 3, which is characterized in that the inclined-plane (49) is by described The direction of mounting surface (48) to the bottom wall (41) extends to the outer surface of the stage portion (46).

5. the shell (2) of electronic control unit according to claim 4, which is characterized in that the backstop of the side wall (22) Angle between portion (24) and the inclined-plane (49) is more than or equal to 25 degree and less than 90 degree.

6. the shell (2) of electronic control unit according to any one of claims 1 to 5, which is characterized in that the stage portion (46) it is upwardly extended in the outer surface of the barricade (42) by the neighboring of the bottom wall (41), the height of the stage portion (46) Degree is less than the height of the bottom wall (41).

7. the shell (2) of electronic control unit according to any one of claim 1 to 5, which is characterized in that the upper cover Body (20) and the lower cover (4) are provided with seaming slot (23) on one of them, are provided with card wedge (47), the card on another Wedge (47) is snapped in the seaming slot (23) and connect the upper cover body (20) with the lower cover (4).

8. the shell (2) of electronic control unit according to claim 7, which is characterized in that the upper cover body (20) and institute Lower cover (4) is stated to be made of plastic material.

9. a kind of electronic control unit (1), which is characterized in that it includes electronics according to any one of claim 1 to 8 The shell (2) of control device, fitting printed circuit board component (3) in the receiving space (A).

10. electronic control unit (1) according to claim 9, which is characterized in that first is formed on the side wall (22) and is opened Mouth (2c)；Electric connector (5) of the electronic control unit (1) including being mounted on the first opening (2c)；The stage portion (46) The support electric connector (5) at the described first opening (2c).