JP3360715B2 - Connector device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connector device provided with a pressure sensor.

[0002]

2. Description of the Related Art Conventionally, there has been known a connector apparatus of this type disclosed in Japanese Patent Application Laid-Open No. Hei 8-212889. As shown in FIGS. 6 and 7, the connector device includes a connector-integrated pressure sensor 1 and a mating connector 2 fitted and connected thereto. The connector-integrated pressure sensor 1 has a sensor section 4 having a diaphragm 3 therein and a connector section 6 having a male tab 5 for outputting a signal from the sensor section 4 to the outside in the axial direction. Have. An air chamber 7 is provided in the sensor section 4 so as to be adjacent to the diaphragm 3, and a ventilation hole 8 is formed in the outer surface 4 </ b> A of the sensor section 4 to allow the atmosphere chamber 7 to communicate with the outside air.
It is open to.

On the other hand, a protective cover 9 for preventing water, dust and the like from entering the ventilation hole 8 is provided on the other end of the connector 2 on the tip side of the main body 2A connected to the connector 6 described above.
Is provided. The protective cover 9 has an annular shape capable of covering the entire periphery of the outer surface 4A in which the ventilation hole 8 is formed in the sensor section 4, and the tip thereof has a stepped inner side as shown in FIG. It overlaps with the large-diameter corner portion 4B of the sensor section 4. A space 9A for protecting the opening exit of the ventilation hole 8 and the outside air are defined via the gap 9B having a hook-like cross section formed by overlapping.

[0004]

In the above-described conventional connector device, the waterproof / dustproof function section is configured such that air can pass through the gap 9B but water, dust and the like cannot pass. However, since the gap 9B has a hook-shaped cross section and is provided with only one bent portion, water, dust, etc., easily pass therethrough, and the gap 9B is waterproof.
The dustproof function was insufficient. Although only the outlet of the ventilation hole 8 needs to be waterproof and dustproof, a waterproof and dustproof function section (gap 9B) is formed over the entire circumference of the connector device, and the efficiency of waterproof and dustproof is poor. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to improve the waterproof / dustproof function of a vent for communicating a pressure sensor with the outside air.

[0006]

In order to achieve the above object, the invention according to claim 1 has a protective hood and an atmosphere chamber.
The signal of the pressure sensor is provided in the inner space of the protective hood.
The output terminal protrudes and the front end face of the protective hood is
The internal space is open and the atmosphere chamber is connected to the outside air.
A connector with an opening for ventilation
Fitted on the outside of the protective hood with the body-shaped pressure sensor
An external hood is provided, and the signal output terminal is provided in the external hood.
From the mating connector that has connection terminals that can be connected to
Wherein the protective hood is provided on the outer casing.
When fitted in the hood, the tip of the protective hood
A surface against the inner surface of the outer hood,
As a sealed seal space, and
Outside, between the vent and the exterior hood
This is characterized in that a labyrinth structure can be formed by the above .

[0007]

[0008]

According to the first aspect of the present invention, there is provided:
According to the configuration, when the connector-integrated pressure sensor and the mating connector are connected, the mating surfaces face each other with a slight gap therebetween, and the openings and outlets of the air holes formed in the mating surfaces are complicated. As a result, a labyrinth structure is formed, so that water, dust and the like cannot pass through the gap as in the conventional case, and water, dust and the like can be reliably prevented from entering the ventilation hole. Here, since the labyrinth structure is formed at the exit of the vent hole, the labyrinth structure can be contained within the minimum necessary range for preventing water and dust from entering the vent hole. It is not necessary to provide a dustproof / waterproof function part over the entire circumference of the connector as in the above, and the dustproof / waterproof efficiency is high. And with the connector integrated pressure sensor
When connected to the mating connector, the protective hood
Part is covered with an external hood so that it is not
Protected. The position where the ventilation holes are provided
At the location covered by
Of water, dust, etc.
Is protected at two locations, the exterior hood and the labyrinth structure
This ensures more waterproof and dustproof.

[0009]

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, reference numeral 10 denotes a connector-integrated pressure sensor (hereinafter, simply referred to as “sensor 10”).
Is shown. Male connector housing 11 provided in sensor 10 (hereinafter simply referred to as “male housing 11”)
Has a pressure sensor portion (not shown) at one end and a bottomed cylindrical protective hood 12 at the other end, and a signal output terminal 13 connected to the pressure sensor portion inside the protective hood 12. Is projected. The pressure sensor is
The pressure in the measured space is compared with the pressure in the atmosphere. In order to bring a predetermined portion of the pressure sensor into an atmospheric pressure state, an air chamber 15 is provided inside the male housing 11 adjacent to the pressure sensor. The atmosphere chamber 15 is communicated with the outside of the male housing 11 through a vent hole 30 to be in an atmospheric pressure state.

The ventilation hole 30 penetrates the thick portion 16 formed on the side of the protective hood 12 along the fitting direction, and an opening 31 of the ventilation hole 30 opens at the end face 18 of the protective hood 12. An annular groove 32 concentric with the opening outlet 31 is formed on the periphery of the opening outlet 31 (see FIG. 3).
The end surface 18 of the protective hood 12 in which the opening outlet 31 and the annular groove 32 are formed forms a contact surface with a mating connector 20 described later, and the annular groove 32 is formed in the mating connector 20 described later. The labyrinth structure according to the present invention is formed together with the annular projection 33. In addition, the ventilation hole 30
Is for convenience of removing the mold of the male housing 11,
The middle part thereof is formed to be tapered and thick in the middle from the opening outlet 31 side to the atmosphere chamber 15 side.

A mating connector 20 connectable to the sensor 10 is shown on the right side of FIG. A female connector housing 21 (hereinafter simply referred to as “female housing 21”) provided in the mating connector 20 is formed with an external hood 22 that can be fitted to the outside of the protective hood 12 of the sensor 10. A connection projection 24 which can be fitted to the inside of the protective hood 12 and which can be connected to the signal output terminal 13 of the sensor 10 and accommodates a connection terminal (not shown) is formed on the inner rear surface 23 by projection. I have. The connection protrusion 24
A waterproof ring 25 is fitted on the outer peripheral surface on the base end side of the protective hood 12. When the sensor 10 and the mating connector 20 are fitted together, the terminals are connected and the waterproof ring 25 is crushed on the inner peripheral surface of the protective hood 12. As a result, the connection space between the terminals is sealed in a waterproof state.

An annular projection 33 corresponding to the annular groove 32 is formed in a portion of the inner surface 23 of the outer hood 22 facing the annular groove 32. This annular projection 3
3 is accommodated in the annular groove 32 when the sensor 10 and the mating connector 20 are properly fitted (see FIG. 2), and the surface of the annular protrusion 33 is slightly spaced from the surface of the annular groove 32. The size is set so as to face through.
As shown in FIG. 2, the gap 34 has a meandering cross-sectional shape and has a labyrinth structure as described above.

Next, the operation of this embodiment having the above configuration will be described. When the mating connector 20 is inserted into the sensor 10 as far as the outer hood 22 is placed on the outside of the protective hood 12 of the sensor 10, the end face 18 of the protective hood 12 becomes the inner surface of the outer hood 22 as shown in FIG. 23. Then, the annular projection 33 of the back surface 23 enters the annular groove 32 of the end surface 18, and the surfaces of the two face each other through a slight gap 34, and the labyrinth structure surrounds the opening 31 of the ventilation hole 30. It is formed. Further, inside the protective hood 12, the connection projection 24 is fitted, and the waterproof ring 25 is crushed to form a complete waterproof space, and the terminals are connected inside the protective hood 12.

Here, for example, when the temperature in the atmosphere chamber 15 rises, the expanded air passes through the ventilation holes 30, the gaps 34 of the labyrinth structure, and furthermore, the protection hood 12.
Through the gap 35 between the outer hood 22 and the outer hood 22. Therefore, the pressure in the atmosphere chamber 15 is always kept at the atmospheric pressure.

When water, dust, or the like is applied to the connector device, water, dust, or the like enters the vent hole 30 in the manner described in the above (2).
Through the two gaps 34, 35. However, if it is not a gas such as air, it is difficult to pass through the gap 35 having a relatively long distance between the protective hood 12 and the outer hood 22. In addition, even if it passes through, objects that are affected by gravity, such as water and dust, have a gap 3
4 is stopped at the folded portion of the labyrinth structure, and cannot reach the vent hole 30.

As described above, in the connector device according to the present embodiment, the labyrinth structure is formed at the opening / outlet 31 of the ventilation hole 30 so that the waterproof / dustproof function of the ventilation hole 30 is improved as compared with the conventional one. Further, in the connector device of the present embodiment, since the position where the labyrinth structure is formed is the opening outlet 31 of the ventilation hole 30, it is within a minimum necessary range for preventing water and dust from entering the ventilation hole 30. The labyrinth structure can be accommodated, and there is no need to provide a dustproof / waterproof function section over the entire circumference of the connector as in the related art, so that dustproof / waterproof efficiency is high. Further, by setting the position where the opening outlet 31 is provided to the position covered by the exterior hood 22, entry of water, dust and the like into the ventilation hole 30 is prevented by the two gaps 34 and 35.
, And more reliable waterproofing and dustproofing have been achieved.

<Other Embodiments> The present invention is not limited to the above-described embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention.

(1) The form of the labyrinth structure is not limited to the above-described embodiment. For example, as shown in FIG. The protrusion 36 may be inserted into the outlet 38.

[0020]

[Brief description of the drawings]

FIG. 1 is a side sectional view of a mating connector device according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing a connection state of the mating connector device.

FIG. 3 is a front view of a sensor.

FIG. 4 is a front view of a mating connector.

FIG. 5 is a partially enlarged sectional view showing a modification.

FIG. 6 is a side sectional view of a conventional mating connector device.

FIG. 7 is a side sectional view showing the assembled state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Connector integrated pressure sensor 12 ... Protective hood 13 ... Signal output terminal 15 ... Atmosphere chamber 18 ... End surface (butting surface) 20 ... Mating connector 22 ... Exterior hood 23 ... Back surface (butting surface) 30 ... Vent hole 31 ... Opening exit 32 ... Circular groove 33 ... Circular projection 34 ... Gap (labyrinth structure) 36 ... Protrusion 38 ... Opening exit

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-8-297064 (JP, A) JP-A-59-119689 (JP, A) JP-A-10-199613 (JP, A) 47838 (JP, U) Japanese Utility Model Showa 49-73790 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 13/52

Claims (1)

(57) [Claims] A protective hood and an atmosphere chamber;
The signal output terminal of the pressure sensor protrudes into the internal space of the
And the inner space is open at the tip end surface of the protective hood.
To communicate the atmosphere chamber with outside air
Connector-integrated pressure sensor with open vent
And an exterior hood fitted outside the protection hood,
A connection that can be connected to the signal output terminal inside the exterior hood
A connector device consisting of a mating connector with terminals
There, when the protective hood is fitted into the outer hood
Is mintues distal end surface of the protective hood behind surface of the outer hood
When the interior space is a sealed space while applying
In both cases, outside the seal space,
A labyrinth structure can be formed with the inner surface of the exterior hood
A connector device characterized in that it is functional .