JP4623744B2 - Electrical equipment for module equipment - Google Patents

Description

  The present invention relates to an electrical device for a module device for connecting the module device to an external device.

For example, a module device such as a monitor camera device is mounted on a vehicle, and an electrical device 110 connected to an external device is shown in an exploded view in FIG. 6A and an assembly view in FIG. When connecting the substrate 103 mounted with an imaging device or the like to an external device with a harness or the like, the connector terminal 140 is provided in a case that houses the monitor camera device, and the external device harness is connected on the connector fitting portion 132 side. The connector terminal 140 is connected to the monitor camera device using the relay harness 150 inside the case 131.
In such an electric device structure, a space for using a relay harness is required for connecting a module device such as a monitor camera device, and it is difficult to reduce the size of the electric device, and there are many parts and many man-hours for assembly. There was a problem of lowering.
Japanese Patent Application Laid-Open No. 2005-347243 discloses a connection structure using a relay harness for connecting a board, but a male terminal is provided on the board side and is fitted and connected to a female terminal provided corresponding to the case side. In addition to the large space for fitting and connecting, the number of parts was large and the assembly work was difficult.

JP 2005-347243 A

  In view of the above technical problems, the present invention provides an electrical device for a module device that has a small number of components, is effective for downsizing, is easy to assemble, has excellent productivity, and has high reliability of electrical connection. Objective.

An electrical device for a module device according to the present invention includes a lens, a case for mounting a module device including an electrical unit having an image sensor, and a connector terminal for connecting the module device to the outside. The case includes an upper case and a lower case. The lower case has a board mounting part for mounting the board of the module device and a connector fitting part for external connection, and the connector terminal is located between the board mounting part and the connector fitting part of the lower case. When the module mounting part is mounted on the lower case, the board mounting part side has a flat board connection part, the connector fitting part side has a protruding connector connection part. The elastic contact piece protruding from the board of the module device is brought into electrical contact with the board connecting portion of the connector terminal, and the elastic contact piece has a mountain shape at the tip side. Ri bend has a contact portion comprising a top and is movable the contact portions along the flat board connecting portion of the connector terminal, moving the contact portion along the board connecting portion of the flat Thus, the upper case was welded to the lower case so that the lens was pressed on the inner surface of the upper case in a state where the position of the image sensor was aligned with the optical axis of the lens. It is characterized by.

Here, the module device refers to a device that is modularized by mounting functional elements on an electric circuit board, as exemplified by an in-vehicle monitor camera device.
For example, when the module device needs to correct the optical axis misalignment with the camera lens, if the board connection part of the connector terminal is flat, the elastic contact piece may be displaced along with the board position correction. Secure electrical connection.
Therefore, it is preferable that the planar substrate connecting portion has a size that can absorb the position correction amount of the substrate.
A case is a case where a module device is mounted and has a connection portion between a module device board mounting portion and an external device. Even if the case is composed of one component regardless of its structure, a plurality of components are combined. Things can be used.
The connector terminal is for connecting a connector for external connection, and may be male pin shape or female socket shape.

Incidentally, be connected to one surface mount connector on the back side of the substrate of the module devices, contact may be have a resilient contact piece provided in the surface mount connector.
In this specification, the back surface of the substrate refers to the surface opposite to the surface on which the functional elements are mounted.

The electrical device according to the present invention has a simple structure because the module device can be electrically connected to the outside simply by elastically contacting the elastic contact piece projecting from the back surface of the substrate of the module device to the board connection portion of the connector terminal. Yes, the number of parts is small, miniaturization is easy, the assembly is simple, the number of assembly steps is small, and the productivity is excellent.
In particular, if the board connection part of the connector terminal is made flat, the module board can be adjusted in the XY direction within the range of the width of the flat connection part, so that the module device can be easily assembled in the case. And the reliability of electrical connection is high.

The electrical equipment for external connection of the module equipment according to the present invention will be described below with reference to the drawings.
1A shows an exploded cross-sectional view of the electric device 10 and the module device 1, and FIG. 1B shows an assembled state of the module device 1 and the electric device 10.
The cross section of the lower case 30 in FIG. 1 is a cross-sectional view taken along the line aa in the external perspective view of the lower case shown in FIG.
The electrical device 10 includes a resin case body including an upper case 20 and a lower case 30, a surface mount connector 50 surface-mounted on the back surface of the substrate 3 of the module device 1, and a connector terminal 40 on the lower case 30. ing.
The electric device 10 is connected to the connector fitting portion 32 of the module device 1 and the lower case 30 by attaching the module device 1 between the upper case 20 and the lower case 30 and electrically connecting the surface mount connector 50 to the connector terminal 40. To an external connector (not shown).
The module device 1 has a predetermined electric circuit, a signal circuit, a connection terminal, and the like formed on the substrate 3, and an electric unit 4 having an image pickup device (not shown) such as a CCD element is mounted on the substrate 3 to mount the camera lens 3. Is attached.
The lower case 30 is provided with a connector terminal 40 by insert molding or the like. The board mounting portion 31 that is recessed for mounting the board 3 faces one end of the connector terminal 40 so that the board connecting portion 41 has a connection surface 41a. It is formed.
A connector fitting portion 32 that is recessed for attaching an external connector is formed outside the lower case, and a connector connecting portion 42 at the other end of the connector terminal 40 is projected.
The connector terminal 40 may be disposed by press-fitting the lower case 30 with an attachment hole.
The upper case 20 has a substantially cylindrical shape with one opening having a reduced diameter. The upper case 20 has a storage space 21 inside and stores the module device 1 in the storage space 21.
As will be described later, the module device 1 places the lens 2 on the inner surface of the upper case 20 in a state in which the position of the substrate 3 is corrected so that the CCD element (not shown) of the electric unit 4 is aligned with the optical axis of the lens 2. The upper case 20 and the lower case 30 are ultrasonically welded in a state where the elastic contact pieces 52a and 52b of the surface mount connector 50 are pressed and connected to the board connecting portion 41 of the connector terminal 40 while being pressed toward the mounting portion 31. And attach it inside the case.
The surface mount connector 50 is provided on the substrate side so as not to be affected by ultrasonic welding between the upper case 20 and the lower case 30.
The module device 1 attached to the case body is connected via the external connector, the surface mount connector 50 and the connector terminal 40 fitted in the connector fitting portion 32.
A connection structure between the surface mount connector 50 and the connector terminal 40 will be described later.
The structure in which the module device 1 is attached to the case body is not limited to the present embodiment, and the surface mount connector 50 is mounted on the substrate 3 of the module device 1 and the module device is attached to the case body so that the elasticity of the surface mount connector is achieved. What is necessary is just to electrically connect a contact piece to the connection terminal for external connection, such as a connector terminal, for example, you may comprise a case body only by a lower case, without providing an upper case.

The surface mount connector 50 includes a contact 51 having a soldering terminal portion 54 and elastic contact pieces 52a and 52b, and a housing 55 to which the contact 51 is attached.
Then, the soldering terminal portion 54 is solder-connected to a predetermined terminal of the module device 1 provided on the substrate 3, and surface-mounted at a predetermined position on the substrate surface opposite to the electric unit 4 (back surface of the substrate). FIG. 3 is a perspective view of the surface mount connector 50.
FIG. 4 shows an explanatory diagram of a connection state between the surface mount connector 50 and the connector terminal 40 when the module device 1 is attached to the electric device 10, and FIG. 4 (a) shows a state before attachment, and FIG. FIG. 4 (c) shows a cross-sectional end view corresponding to the AA line position, and FIG. 4 (d) shows a cross-sectional end view corresponding to the BB line position.
The housing 55 of the surface mount connector 50 is provided with an insulating base portion 57 on the inner surface of a box-shaped metal case 56 opened on one surface.
A plurality of contacts 51 are arranged in the housing 55.
The contact 51 is provided with bent portions 51a and 51b obtained by bending the longitudinal direction of the leaf spring at an acute angle, and one end side outside the both bent portions 51a and 51b is bonded to the insulating base portion 57 and is soldered to the tip portion. A portion 54 is provided.
The soldering terminal portion 54 passes through the metal case 56 and the insulating base portion 57 and passes through a bottom surface opening 55c provided in the bottom portion of the housing 55, and is bent so as to be parallel to the housing bottom surface 55b and the connection surface of the substrate 3. It is formed and soldered to a pad (not shown) on the substrate 3.
At the end of the contact 51 opposite to the soldering terminal portion 54, a notch groove 53d cut in the longitudinal direction from the tip is provided, and both sides of the notch groove 53d are bent to have elastic repulsion directions toward the board mounting portion 31. Elastic contact pieces 52a and 52b are provided so as to be in the board fitting direction.
The tips of both elastic contact pieces 52a and 52b are bent in a mountain shape with the top facing the outside of the housing opening 55a, and contact portions 53a and 53b are provided on the top.
The module device 1 corrects the position of the optical axis of the lens 2 and the position of the CCD element of the electric unit 4 mounted on the substrate 3 by moving the substrate 3 in the plane direction of the substrate 3 as shown in FIG. The electric unit 4 portion is assembled to the lens 2 above.
Then, the board 3 is fitted into the board mounting portion 31 of the lower case 30, and the elastic contact pieces 52a and 52b are bent as shown in FIGS. 4B and 4D so that the contact portions 53a and 53b are connected to the connector terminals. It connects to 40 connection surfaces 41a.
The connection surface 41a of the connector terminal 40 is formed in a circular surface along the position correction direction in a size over the range for correcting the position of the substrate, and the contact portions 53a and 53b are formed within the range for correcting the position of the substrate 3. I can connect.
As shown in FIG. 1B, the surface mount connector 50 and the connector terminal 40 are ultrasonically welded between the upper case 20 and the lower case 30 while holding the lens 2 with the upper case 20.
As shown in FIG. 4D, the surface mount connector 50 is connected by two-point contact in which the contact portions 52c and 52d of the two elastic contact pieces 52a and 52b are brought into contact with the connection surface 41a of the connector terminal. The reliability of connection is very high compared to the case of connecting with.

(A) The longitudinal cross-sectional view which decomposed | disassembled the electric equipment which concerns on this invention is shown, (b) shows the longitudinal cross-sectional view which assembled | attached the module apparatus to the electric equipment. The perspective view of a lower case is shown. The perspective view of a surface mount connector is shown. An explanatory view of a connection state of a surface mount connector and a connector terminal is shown. Explanatory drawing of the state which aligns a lens and an electric unit is shown. The longitudinal cross-sectional view of the conventional electric equipment is shown.

Explanation of symbols

1 Module equipment 2 Camera lens 3 Substrate 4 Electrical unit (CCD unit)
DESCRIPTION OF SYMBOLS 10 Electrical equipment 20 Upper case 21 Storage space part 30 Lower case 31 Board attachment part 32 Connector fitting part 40 Connector terminal 41 Board connection part 41a Connection surface 42 Connector connection part 50 Surface mount connector 51 Contact 51a, 51b Bending part 52a, 52b Elastic clamping pieces 53a, 53b Contact portion 53d Notch groove 54 Solder terminal portion 55 Housing 55a Housing opening 55b Bottom surface 55c Bottom surface opening 56 Metal case 57 Insulating base portion

Claims (1)

A lens, a case for mounting a module device composed of an electric unit having an image sensor, and a connector terminal for connecting the module device to the outside;
The case is composed of an upper case and a lower case, and the lower case has a board mounting part for mounting a board of the module device and a connector fitting part for external connection,
The connector terminal is provided by penetrating between the board mounting portion and the connector fitting portion of the lower case, and the board mounting portion side has a board connecting portion formed in a planar shape. The side has a protruding connector connection,
When the module device is mounted on the lower case, the elastic contact piece protruding from the board of the module device is brought into elastic contact with the board connection portion of the connector terminal to be electrically connected, and the elastic contact piece has a mountain shape at the tip side. A contact portion having a bent top portion, the contact portion being movable along the planar substrate connection portion of the connector terminal , and the contact portion being moved along the planar substrate connection portion; Then, in a state where the substrate is corrected so that the position of the image sensor matches the optical axis of the lens, the upper case is welded to the lower case so that the lens is pressed by the inner surface of the upper case. Features electrical equipment for modular equipment.

Images