JPH118009A - Waterproof connector and electronic apparatus casing incorporating it and combination of electronic apparatus casing incorporating it and its mating waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterfroof connector and an electronic apparatus casing incorporating it, and a combination of the electronic apparatus casing incorporating it and its mating waterproof connector that prevent water or moisture from intruding into contacting areas of contacts of a male and female connecters and enable the correct transmission of data from the apparatus to host equipment. SOLUTION: This invention relates to a male or female waterproof connector 1 which is installed in an electronic apparatus casing of a temperature recorder or the like in a watertight manner; a cylincdrical part having an outer size slightly smaller than the inner size of an insertion hole of the electronic apparatus casing is formed in an insulating main body 5 receiving a contacts 3 to which a signal line is connected; an elastic ring 7 capable of sealing the space between the insertion hole and the cylindrical part in a water tight manner is mounted in the form making one turn around the cylindrical part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male or female waterproof connector which is attached to an electronic equipment casing such as a temperature recorder in a watertight manner, an electronic equipment casing incorporating the same, and an electronic equipment casing incorporating the waterproof connector and a counterpart. It relates to a combination with a waterproof connector.

[0002]

2. Description of the Related Art A temperature recorder records a temperature that changes every moment and simultaneously or after acquiring certain data, is connected to a host device capable of displaying a temperature change and displays it. . The connection between the temperature recorder and the host device is made using male and female connectors.

Conventional male and female connectors 33 and 35 attached to an electronic equipment casing 31 of this kind are shown in FIG.
Shown in Conventionally, no countermeasures against water or moisture are taken in this type of electronic device 30, and a male connector 33 is fixed to the electronic device casing 31 with screws 36 and the female connector 35 is fitted thereto. Was something. Accordingly, water droplets, moisture, and the like can enter the inside of the electronic device casing from the through holes formed in the electronic device casing 31, and naturally also enter the contact portions of the male connector 33 and the female connector 35 with the contacts 33a.

[0004]

As a result, there is a drawback that current flows through water droplets and moisture, and incorrect data is output from the host device. In addition, as a result of exposing the contact contact portions of the male connector and the female connector to moisture or moisture, the contact portions are corroded to cause poor contact.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, to prevent moisture or moisture from invading contact portions of a male connector and a female connector, and to obtain accurate data from an electronic device to a host device. And a combination of an electronic device casing incorporating the waterproof connector and a counterpart waterproof connector.

[0006]

According to the present invention, there is provided a male or female waterproof connector watertightly mounted on an electronic equipment casing such as a temperature recorder, wherein a contact to which a signal line is connected is provided. The insulating body to be housed is provided with a cylindrical portion having an outer shape slightly smaller than the inner shape of the insertion hole of the electronic device casing, and an elasticity capable of sealing the space between the insertion hole and the cylindrical portion in a watertight manner. A waterproof connector characterized in that a ring is attached so as to go around a cylindrical portion.

An elastic ring attached to the cylindrical portion so as to make a full round seals the space between the insertion hole and the cylindrical portion in a watertight manner. Therefore, moisture or moisture does not enter the portion inside the electronic device casing from the elastic ring. Therefore, waterproofness of the male or female waterproof connector itself is not required.

According to a second aspect of the present invention, in the waterproof connector according to the first aspect, the main body has a pair of hooks for engaging with a hook formed at a predetermined position of an insertion hole of the electronic device casing. It is characterized by doing.

By simply inserting the waterproof connector according to the first aspect of the present invention into the insertion hole of the electronic device casing,
The pair of hooks engage with the hooks, and the waterproof connector is fixed to the electronic device casing. No need for fixing means such as screws.

[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
Wherein the body has a generally cylindrical outer shape so as to provide a cylindrical portion, and the insertion hole of the electronic device casing has a circular cross section.

Therefore, the sealability is excellent and the manufacture is easy.

According to a second aspect of the present invention, there is provided an electronic equipment casing characterized in that the waterproof connector according to any one of claims 1 to 3 is mounted in an insertion hole in a watertight manner.

According to a third aspect of the present invention, an electronic device casing according to claim 4 and a first waterproof connector watertightly mounted in an insertion hole of the electronic device casing can be electrically connected. A combination with a female or male second waterproof connector is provided.

[0014] The second waterproof connector has an insulating body for housing a terminal for elastically contacting a contact of the first waterproof connector to obtain an electrical connection, and has an inner shape larger than an inner shape of an insertion hole of an electronic equipment casing. A cylindrical portion having a slightly smaller outer shape was provided, and an elastic seal capable of sealing the space between the insertion hole and the cylindrical portion in a watertight manner was attached so as to surround the cylindrical portion, and the electric wire of the cable was connected to the terminal. A cover made of an insulating resin is provided by integral molding so as to cover from the base of the rear cylinder to the position where the insulating coating of the cable is applied.

The second waterproof connector is exposed to the external environment except for the cylindrical portion even in a state where the second waterproof connector is connected to the first waterproof connector. The distal end side of the cylindrical portion from the position where the elastic seal is provided is held watertight by an elastic seal interposed between the insertion hole of the electronic device casing and the cylindrical portion. That is, the electrical connection portion between the contact of the first waterproof connector and the terminal of the second waterproof connector is protected by the inner surface of the insertion hole of the electronic device casing and the elastic ring and the elastic seal that comes into water-tight contact with the inner surface of the insertion hole. ing.
On the other hand, since the cable side is exposed to moisture or moisture from the position where the elastic seal of the cylindrical portion is provided, it is manufactured by integral molding of resin.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof connector according to the present invention, an electronic equipment casing incorporating the same, and a combination of an electronic equipment casing incorporating the waterproof connector and a mating waterproof connector will be described in detail with reference to the preferred embodiments shown in the drawings. Will be described.

FIG. 1 is a perspective view showing an embodiment of the waterproof connector according to the present invention.

The illustrated waterproof connector 1 is a male connector and is attached to an electronic equipment casing 11 shown in FIG. 3 in a watertight manner. The waterproof connector 1 is a signal line 1 of the electronic device 10.
2 has a main body 5 made of an insulating resin for accommodating the contact 3 connected thereto. In the illustrated preferred embodiment, the body 5 has a generally cylindrical profile, which provides a tubular portion. On the outer peripheral surface of the main body 5, an annular groove 5 a is formed so as to go around the main body 5. An elastic ring 7 having a circular cross section is mounted in the groove 5a. As the elastic ring 7, an appropriate material having elasticity and durability, for example, silicone rubber is used.
The outer diameter of the elastic ring 7 is set slightly larger than the inner diameter of the insertion hole 11a of the electronic device casing 11 to which the waterproof connector 1 is mounted.

A pair of elastic legs 5b, 5b are formed on the outer surface of the main body 5, and hook portions 5c, 5c protruding outward are formed at the distal ends thereof.
The hook 5c of the elastic leg 5b is
And a hook 11b formed at a predetermined position of the insertion hole 11a. Thus, only by inserting the waterproof connector 1 according to the present invention into the insertion hole 11a of the electronic device casing 11, the pair of hook portions 5c engage with the hook portions 11b, and the waterproof connector 1 is inserted into the electronic device casing 11. Fixed. This has the effect of eliminating the need for fixing means such as screws, which were conventionally used when fixing this type of male connector to the casing 11.

FIG. 3 shows an electronic device 10 in which the waterproof connector 1 shown in FIG. 1 is watertightly mounted in an insertion hole 11a of a casing 11, and a usage state of a waterproof connector 2 connected to the waterproof connector 1. It is a perspective view. When the waterproof connector 1 is a male type as in the illustrated embodiment, the waterproof connector 2 is a female type. Conversely, if the waterproof connector 1 is female, the waterproof connector 2 will be male.

The casing 11 is made of plastic and is covered with a lid (not shown) to be used as electronic equipment. Since the lid is attached to the casing 11 via a sealing material such as a rubber packing, the inside is substantially completely sealed against water drops or moisture except for the insertion hole 11a. As shown in detail in FIG. 4, the insertion hole 11a is provided with a hook portion 11b and a shoulder portion 11c at a portion recessed by a cylindrical hole having a circular cross section and a portion in front thereof.
And The end face 5d of the waterproof connector 1 is a shoulder 11
c, the hook 5c of the elastic leg 5b is inserted into the insertion hole 1
It is set so as to fit into the hooking portion 11b of 1a. Thereby, the waterproof connector 1 is inserted into the insertion hole 1 of the electronic device 10.
It is firmly fixed so as not to move in 1a.

At this time, the elastic ring 7 mounted in the groove 5a on the outer peripheral surface of the main body 5 seals the space between the insertion hole 11a of the casing 11 and the outer peripheral surface (cylindrical portion) of the main body 5 in a watertight manner. Therefore, the electronic device casing 1 is better than the elastic ring 7.
Moisture or moisture does not enter into the inner part of the casing 1, and the inside of the casing 11 is substantially completely sealed watertight. Accordingly, since the waterproof connector 1 is located inside the casing 11 except for the distal end side of the elastic ring 7, the waterproofness of the waterproof connector itself is not required.

FIG. 5 is an enlarged perspective view of the waterproof connector 2 shown in FIG. 3, and FIG. 6 is a longitudinal center sectional view thereof.

As described above, the waterproof connector 2 is female if the first waterproof connector 1 that is watertightly mounted in the insertion hole 11a of the electronic device casing 11 is female, and the waterproof connector 1 is female. If so, it is a male form. The waterproof connector 2 is schematically illustrated as a contact 3 of the first waterproof connector 1.
An insulating main body 23 for accommodating a terminal 22 for elastically contacting the terminal 22 to obtain an electrical connection, an electric wire 29a of a cable 29 connected to the terminal 22, and an insulating coating 29b of the cable 29 applied from the base of the cylindrical portion 23. And a cover 25 made of an insulating resin integrally formed so as to cover up to the position.

A cylindrical portion 23a having an outer shape slightly smaller than the inner shape of the insertion hole 11a of the electronic device casing 11 is provided at the distal end side of the main body 23. Cylindrical part 23
On the outer peripheral surface of a, an annular groove 23b is formed so as to go around the cylindrical portion 23a. An elastic seal 27 having a circular cross section is mounted in the groove 23b. The same elastic seal 27 as the elastic ring 7 can be used. The outer diameter of the elastic seal 27 is
It is set slightly larger than the inner diameter of one insertion hole 11a.

On the outer surface of the main body 23, elastic legs 23
c is formed, and a locking portion 23d is formed at a predetermined position. The locking portion 23d of the elastic leg 23c is adapted to engage with a locking shoulder (not shown) formed at a predetermined position of the insertion hole 11a of the electronic device casing 11. Thereby, the insertion hole 1 of the electronic device casing 11 is formed.
By simply inserting the waterproof connector 2 according to the present invention into 1a, the locking portion 23d of the elastic leg 23c engages with the locking shoulder and is fixed to the electronic device casing 11. At this time, the waterproof connector 2 and the waterproof connector 1 are electrically connected. Thus, it is possible to prevent an accident in which the waterproof connector 2 of this type is disconnected from the cable 29 by catching a foot or the like.

The waterproof connector 2 is covered with an integrally molded insulating resin cover 25 from the base of the main body 23 to the position where the insulating coating 29b of the cable 29 is applied. for that reason,
Except for the distal end side of the elastic seal 27, the waterproof connector 2
Is completely sealed against water droplets or moisture. Furthermore, when the waterproof connector 2 is inserted into the insertion hole 11a of the casing 11, the elastic seal 27 comes into contact with the inner surface of the insertion hole 11a to seal the back side of the insertion hole 11a therefrom. This is because the electrical connection between the contact 3 of the waterproof connector 1 and the terminal 22 of the waterproof connector 2 has the inner surface of the insertion hole 11a of the electronic device casing 11, and the elastic seal 7 and the elastic seal 7 that contact the inner surface of the insertion hole 11a in a watertight manner. 27 means that it is fully protected in cooperation with This has the effect of enabling accurate data transmission from the electronic device 10 to the host device.

In the illustrated preferred embodiment, the insertion hole 11a of the casing 11 has a circular cross section, but may of course have other cross sectional shapes, for example, various shapes such as a regular octagon.

[0029]

According to the present invention, there is provided a waterproof connector of a male or female type which is attached to an electronic device casing such as a temperature recorder in a watertight manner. A cylindrical portion having an outer shape slightly smaller than the inner shape of the insertion hole of the device casing is provided, and an elastic ring capable of sealing the space between the insertion hole and the cylindrical portion in a watertight manner is arranged around the cylindrical portion. When used in a watertight manner in the insertion hole of the electronic equipment casing, it is necessary to prevent moisture or moisture from entering the contact portions of the male and female connectors. This has the effect of enabling accurate transmission of data from the electronic device to the host device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a waterproof connector according to the present invention.

FIGS. 2 (a) to 2 (c) are a front view, a plan view, and a central longitudinal sectional view of the waterproof connector of FIG. 1, respectively.

FIG. 3 is a perspective view showing a usage state of a combination of an electronic device casing equipped with a waterproof connector according to the present invention and a mating waterproof connector.

FIG. 4 is an enlarged perspective view showing a state in which a waterproof connector is mounted in a watertight manner in an insertion hole of the casing of FIG. 3;

FIG. 5 is a perspective view of the mating waterproof connector shown in FIG. 3;

FIG. 6 is a central longitudinal sectional view of the waterproof connector shown in FIG. 5;

FIG. 7 is a perspective view of a conventional male and female connector attached to an electronic device casing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Waterproof connector 2 (other party) waterproof connector 3 Contact 5 Main body 5a Groove, 5b Elastic leg, 5c Hook part 7 Elastic ring 10 Electronic device 11 Casing 11a Insertion hole, 11b Hanging part, 11c Shoulder part 22 Terminal 23 Main body 23a Cylindrical part , 23b groove, 23c elastic leg, 23d
Locking part 25 Cover 27 Elastic seal 29 Cable 29a Electric wire, 29b Insulation coating

Claims (5)

[Claims] A male or female waterproof connector watertightly attached to an electronic device casing such as a temperature recorder, wherein the electronic device casing is inserted into an insulating main body that accommodates a contact to which a signal line is connected. A cylindrical portion having an outer shape slightly smaller than the inner shape of the hole was provided, and an elastic ring capable of sealing watertight between the insertion hole and the cylindrical portion was attached so as to surround the cylindrical portion. A waterproof connector characterized in that: 2. The waterproof connector according to claim 1, wherein the main body has a pair of hooks that engage with a hook formed at a predetermined position of an insertion hole of the electronic device casing. And waterproof connector. 3. The waterproof connector according to claim 1, wherein the main body has a generally cylindrical outer shape, the outer shape provides the cylindrical portion, and an insertion hole of an electronic device casing. A waterproof connector characterized by having a circular cross section. 4. An electronic equipment casing, wherein the waterproof connector according to claim 1 is mounted in a watertight manner in the insertion hole. 5. An electronic device casing according to claim 4, and a female or male second connector electrically connectable to a first waterproof connector watertightly mounted in an insertion hole of the electronic device casing. A waterproof connector, wherein an insulating main body for housing a terminal for obtaining an electrical connection by elastically contacting a contact of the first waterproof connector is slightly smaller than an inner shape of an insertion hole of an electronic device casing. A tubular portion having an outer shape is provided, and an elastic seal capable of sealing the space between the insertion hole and the tubular portion in a watertight manner is attached so as to go around the tubular portion, and the rear tubular portion is connected to the terminal by a cable wire. A second waterproof connector in which an insulating resin cover is provided by integral molding so as to cover from the base to the position where the insulating coating of the cable is applied, and a contact of the first waterproof connector and a second waterproof connector. waterproof An electronic device incorporating a waterproof connector, wherein an electrical connection portion between the connector and the terminal is protected by an inner surface of the insertion hole of the electronic device casing, and an elastic ring and an elastic seal that are in water-tight contact with the inner surface of the insertion hole. Combination of casing and mating waterproof connector.