JP4249192B2 - Electrical equipment for module equipment - Google Patents

Description

  The present invention relates to an electrical device for a module device for connecting a module device such as an in-vehicle monitor camera 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. 5A and an assembly view in FIG. When connecting the substrate 103 on which the image sensor or the like is mounted to an external device with a harness or the like, the connector terminal 140 is provided in the 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, there is a problem that 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 the number of parts is increased and the number of assembly steps is increased. there were.
Japanese Patent Application Laid-Open No. 2005-347243 discloses a connection structure in which a relay harness for connecting a board is omitted, but a male terminal is provided on the board side and a female terminal provided corresponding to the case side is fitted and connected. 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

  SUMMARY OF THE INVENTION In view of the above technical problems, the present invention has an object to provide an electrical device for connecting a module device that has a small number of components, is effective for downsizing, is easy to assemble, and has high electrical connection reliability. To do.

The technical gist of the present invention is that a substrate on which a module device is mounted is attached to a mounting portion of a substrate provided on the lower case, and the substrate pressing portion provided on the upper case is pressed against the upper case and the lower case. A modular device electrical device that houses a module device in a case formed by a case, wherein the lower case has a board mounting portion and a connector fitting portion for external connection, and from the board mounting portion side. has a connector terminal that communicates with the connector fitting portion, the connector terminals, and a connector connection portion protruding engaging portion and the connector fitting portion that protrudes to the mounting side of the substrate, the engaging portion A relay contact is attached to the base, and the relay contact forms a base portion having an elastic clamping piece that is clamped and engaged with the engagement portion of the connector terminal, and an elastic contact piece that is bent at an acute angle from the base portion to the substrate side. And elastic pinch The holding piece is clamped and attached to the engaging portion of the connector terminal, and the elastic contact piece is pressed against the board to be electrically connected to the board .

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.
The case is for mounting a module device and has a connection portion with an external device.
The connector terminal is for connecting a connector for external connection, and may be male pin shape or female socket shape.

  If the relay contact has a plurality of elastic contact pieces, the contact property to the connection terminal of the module device becomes high, and if the lengths of the plurality of elastic contact pieces are different from each other, the resonance frequency differs for each elastic contact piece. In other words, connection reliability increases even when external vibration is applied.

The electrical device according to the present invention can connect the connector terminal and the relay contact simply by inserting one end of the connector terminal into the relay contact so that the engaging portion of the connector terminal is clamped by the elastic clamping piece provided in the relay contact. Since the elastic contact piece can be electrically connected to the substrate, the structure is simple, the number of parts is small, the size can be easily reduced, the assembly is simplified, and the number of assembly steps is also small.
If the relay contact has a plurality of elastic contact pieces, poor connection can be effectively prevented.
Furthermore, assuming that the lengths of the plurality of elastic contact pieces are different from each other, the resonance frequency will be different for each elastic contact piece. It can be effectively prevented.

The electrical equipment for external connection of module equipment according to the present invention will be described below with reference to the drawings.
FIG. 1A shows an exploded cross-sectional view of the electric device 10 and the module device 1 attached to the electric device 10, and FIG. 1B shows a state where the module device 1 is attached to the electric device 10.
1 is a cross-sectional view taken along the line aa in FIG.
The module device 1 is an example of an in-vehicle monitor camera device. An imaging device (not shown) such as a CCD device and a camera lens 2 are mounted on a substrate 3, and an electric circuit, A signal circuit or the like is formed.
The electric device 10 includes a resin case body including an upper case 20 and a lower case 30, a connector terminal 40, and a relay contact 50.
The lower case 30 includes a connector fitting portion 32 and a board mounting portion 31, and a connector terminal 40 is disposed in the mounting hole 33 that allows the connector fitting portion 32 and the board mounting portion 31 to communicate with each other.
The connector terminal 40 may be insert-molded when the lower case 30 is injection-molded, or may be press-fitted into the mounting hole 33 later.
The connector fitting portion 32 is formed in a concave shape that can be fitted with an external connector, and the board mounting portion 31 is formed on the opposite side of the connector fitting portion 32 with a receiving portion 31 a at the edge of the board 3 of the module device 1. A recess 31b is formed inside thereof.
A relay contact 50 is engaged with and electrically connected to the recess 31 b of the board mounting portion 31 of the connector terminal 40.
The upper case 20 includes the module device 1 in the case, and is attached to the lower case 30 so that the substrate 3 is electrically connected to the relay contact.
In the embodiment shown in FIG. 1, the upper case 20 has a lens storage portion 21, a substrate pressing portion 22, and a snap locking claw 23, and the snap locking claw 23 is lowered as shown in FIG. An example of snapping onto the locking protrusion 34 of the case 30 and attaching to the lower case 30 is shown. When a module device is mounted in the case, an electric circuit pattern or pad provided on the substrate and the elastic contact piece 52a of the relay contact 50, The mounting structure is not limited as long as 52b is electrically connected.
Further, the upper case 20 is attached to the lower case 30 so as to cover and store the module device 1 with the lens storage portion 21.
As shown in FIG. 1B, the module device 1 attached to the board attaching portion 31 is connected to the relay contact 50 while being pressed and fixed by the upper case 20.
Then, the module device 1 and the external connector are connected via the relay contact 50 and the connector terminal 40 by fitting the external connector to the connector fitting portion 32 and connecting to the connector terminal 40.
The connection structure of the module device, the relay contact, and the connector terminal will be described later.
The case body of the electric device 10 is composed of the upper case 20 and the lower case 30. The module device is attached and fixed, and the external connector and the module device fitted together are connected via the connector terminal and the relay contact. If the connection is possible, the upper case 20 is not necessarily provided, and the case body may be configured by only the lower case 30.

FIG. 3 shows a structural example of the connector terminal 40 and the relay contact 50.
In this embodiment, as shown in FIG. 2, the number of connections with external devices is four, and there are four sets of connector ends 40 and relay contacts 50, but only one set is representative in FIG. Show.
As shown in FIG. 3 (a), the connector terminal 40 is made of metal, has a rectangular cross section, and has a connector connecting portion 41 and an engaging portion 42 for a relay contact at both ends of a substantially bowl shape. A pushing portion 43 for attaching the connector terminal 40 to the attachment hole 33 and an engagement portion 44 for engaging the inner periphery of the attachment hole 33 project between the portion 41 and the engagement portion 42 of the connector in the width direction. It is provided.
As shown in FIGS. 3A and 3B, the connector terminal 40 may be press-fitted into the mounting hole 33 from the board mounting portion 31 side in the lower case, or may be insert-molded when the lower case is injection molded. Good.
As shown in FIG. 1, the connector terminal 40 has a connector connecting portion at one end and an engaging portion 42 with the relay contact 50 at the other end, and the connector connecting portion 41 is outside the connector fitting portion 31. The engagement portion 42 protrudes toward the board attachment portion 31 in the attachment direction of the module device 1 at a position corresponding to the connection terminal of the connector in the external connector fitting direction.
The connector connecting portion may be a male terminal or a female terminal.

As shown in FIG. 3 (b), the relay contact 50 is made of metal, has a bent portion 53 at the approximate center in the longitudinal direction of the leaf spring, and is folded in half at an acute angle, and is bent from the base portion 50a to be elastic. When the contact piece is formed, a notch groove 54 cut in the longitudinal direction from one end side is provided, and two elastic contact pieces 52a and 52b are formed on both sides thereof.
Near the tips of the elastic contact pieces 52a and 52b, the contact portions 52c and 52d are formed on the outer sides of the module device by bending them in a mountain shape.
On the opposite side of the elastic contact pieces 52 a and 52 b of the relay contact 50, an insertion hole 55 that opens in a rectangle corresponding to the engagement portion 42 of the connector of the connector terminal 40 is provided, and the base portion 50 a is provided on both sides of the insertion hole 55. Two elastic pinching pieces 51a and 51b extending from the front are provided.
As shown in FIG. 3 (c), the relay contact 50 is inserted into the engaging portion 42 of the connector terminal 40 through the insertion hole 55, whereby the engaging portion 42 of the connector is elastically held at the tips of the elastic holding pieces 51a and 51b. Then, the connector terminal 40 is engaged.
As shown in FIG. 2, a partition portion 31c that partitions the relay contact 50 in an electrically insulating manner is provided between the relay contacts 50.

FIG. 4 is an explanatory diagram of a connection state between the module device 1 and the relay contact 50 by attaching the module device 1 to the board attachment portion 31. FIG. 4A is a diagram illustrating a state before the module device 1 is attached to the substrate attachment portion 31. FIG. 4B shows a state of attachment of the module device 1 to the board attachment portion 31, and FIG. 4C shows a cross-sectional view taken along line AA.
As shown in FIG. 4A, a connection terminal 4 made of a pattern or a metal pad is provided on the side surface of the lower case 30 of the substrate 3 of the module device 1.
As shown in FIG. 3B, the relay contact 50 is clamped by the elastic contact pieces 51a and 51b of the relay contact so that the base portion 50a of the relay contact is placed on the relay contact receiving surface 35 of the lower case 30. As described above, the elastic contact pieces 52a and 52b are engaged with the engaging portion 42 of the connector terminal 40 so that the bending elastic repulsion direction faces the mounting direction of the module device 1, and the contact portions of the elastic contact pieces 52a and 52b. 52 c and 52 d are formed so as to correspond to the connection terminals 4 of the module device 1.
Therefore, as shown in FIG. 4B, when the module device 1 is mounted and fixed to the board mounting portion 31, the contact portions 52c and 52d of the elastic contact pieces 52a and 52b are elastically contacted and connected to the connection terminals 4 of the module device 1. To do.
At this time, since the relay contact 50 supports the base portion 50a with the relay contact receiving surface 35 of the lower case, the relay contact 50 is not detached from the engaging portion of the connector.
As shown in FIG. 4C, the relay contact 50 is connected to the module device 1 by two-point contact in which the contact portions 52 c and 52 d of the two elastic contact pieces 52 a and 52 b are brought into contact with the connection terminal 4 of the module device 1. Therefore, the connectivity is very high compared to the case of connection at one point.
Further, the elastic contact pieces 52a and 52b are different in length from the bent portion 53 and have a difference in resonance frequency so that they do not resonate at the same time even in an earthquake state. Connection reliability with respect to the connection terminal 4 is improved.

(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 which assembled | attached the connector terminal and the relay contact to the lower case is shown. Explanatory drawing of a connector terminal and a relay contact is shown. An explanatory view of a connection state of a module device and a relay contact is shown. The longitudinal cross-sectional view of the conventional electric equipment is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Module apparatus 2 Camera lens 3 Board | substrate 4 Connection terminal 10 Electrical equipment 20 Upper case 21 Lens storage part 22 Board | substrate press part 23 Snap latching claw 30 Lower case 31 Board | substrate attachment part 31a Receiving part 31b Recessed part 31c Partition part 32 Connector fitting part 33 Mounting hole 34 Locking protrusion 35 Relay contact receiving surface 40 Connector terminal 41 Connector connecting portion 42 Connector engaging portion 43 Pushing portion 44 Locking portion 50 Relay contact 50a Relay contact base portions 51a and 51b Elastic clamping pieces 52a and 52b Elastic contact piece 52c, 52d Contact part 53 of elastic contact piece Bending part 54 Notch groove 55 Insertion hole

Claims (3)

In the case formed by the upper case and the lower case while mounting the board mounted with the module device on the board mounting part provided in the lower case and pressing the board with the board pressing part provided in the upper case An electrical device for modular equipment that houses modular equipment,
The lower case has a board mounting portion and a connector fitting portion for external connection, and has a connector terminal communicated from the board mounting portion side to the connector fitting portion side ,
The connector terminal has an engaging portion protruding to the mounting portion side of the board and a connector connecting portion protruding to the connector fitting portion side, and the relay contact is attached to the engaging portion.
The relay contact is formed with a base portion having an elastic clamping piece that is clamped and engaged with the engagement portion of the connector terminal, and an elastic contact piece that is bent at an acute angle from the base portion to the substrate side ,
An electrical apparatus for module equipment , wherein an elastic clamping piece is clamped and engaged with an engaging portion of a connector terminal, and the elastic contact piece is pressed against the board to be electrically connected to the board .   The electrical equipment for module equipment according to claim 1, wherein the relay contact includes a plurality of elastic contact pieces.   The electrical equipment for module equipment according to claim 2, wherein the plurality of elastic contact pieces have different lengths.

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