JP2017157343A - Waterproof connector and waterproof connector device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure waterproofness of a connection part while having a simple construction and keeping a small space.SOLUTION: A waterproof connector includes: a convex fitting part that is inserted into a concave fitted part in which a connection terminal is distributed in an inner part in a mating connector; and a terminal which is distributed in the fitting part, and is connected with the connection terminal of the mating connector when the fitting part is inserted into the fitted part. In an outer peripheral surface of the fitting part, a waterproof member and a friction member are provided. The waterproof member is provided over a peripheral direction of the outer peripheral surface, and waterproofs the connection part of the connection terminal and the terminal by being airtightly fitted to an inner peripheral surface of the fitted part. The friction member is provided at a position different from the position of the waterproof member in the outer peripheral surface, generates friction by being non-airtightly fitted to the inner peripheral surface in the fitted part, and regulates the movement to a pull-off direction of the fitting part opposite an insertion direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a waterproof connector and a waterproof connector device, and more particularly, to a waterproof connector and a waterproof connector device applicable to connection between a portable electronic device such as a portable medical electronic device and an electronic component.

Conventionally, a pulse oximeter is known as a medical electronic device capable of measuring arterial oxygen saturation (SpO ₂ ) in a non-invasive manner with light. Arterial oxygen saturation is a biological parameter that represents the ratio of oxyhemoglobin to total hemoglobin in arterial blood.

  The pulse oximeter has a pair of upper and lower clip pieces that sandwich a predetermined part such as a finger, a toe, or an earlobe, a probe part that acquires a biological signal using light at the predetermined part sandwiched, and a connector on the probe part. And a main body unit that measures and records arterial blood oxygen saturation by processing a biological signal acquired by the probe unit.

  The probe unit emits red light or infrared light from one clip of the upper and lower clips toward a finger sandwiched between the upper and lower clips, for example, using a light emitting element such as a light emitting diode, and the other clip, for example, a photo The light transmitted through the finger is detected using a light receiving element such as a diode (see, for example, Patent Document 1). The pulse oximeter is a signal processing circuit in the main body, which measures the arterial blood oxygen saturation using the transmitted light detection signal detected by the probe, and detects fluctuations in the light detection level synchronized with the pulse of arterial blood with red light. And the case of infrared light are compared, and the arterial oxygen saturation is calculated from the ratio.

JP 7-236625 A

  By the way, since the pulse oximeter has been actively used in home oxygen therapy in recent years, when using it in water facilities such as toilets and washrooms in accordance with daily activities, There is a risk that the bowl may be dropped or splashed, or water may be applied when eating or drinking, or by rainfall.

  In the conventional pulse oximeter, not only the waterproofing of the main body part but also the connector connecting the main body part and the probe part does not need to be waterproofed, but it is necessary for the daily life of the level of waterproofing. There was a request to ensure drip.

  Usually, when connecting electronic devices via a connector, a structure is known in which an O-ring is provided between a fitting portion and a fitting portion of a plug and a socket that are fitted to each other.

  In this case, the O-ring is attached to one of the outer periphery of the one fitting portion or the inner periphery of the fitted portion into which the fitting portion is inserted and fitted.

  In this structure, since the plug and the socket are engaged with each other by the insertion operation while the O-ring is crushed, the stress of the compressed O-ring is increased in order to maintain high water tightness. And the air pressure of the space sealed when fitting by insertion becomes high. Thereby, after insertion, the plug is pushed back in the removal direction by the air pressure in the sealed space, and so-called floating of the plug from the socket occurs. In order to eliminate this floating, it is necessary to use a structure for relaxing compressed air, such as providing an air chamber communicating with the fitting portion around the fitting portion.

  However, pulse oximeters used in home oxygen therapy etc. are preferred to be portable and downsized, and pulse oximeters that are considered to be downsized cannot secure space for the air chamber. There's a problem.

  In addition, a configuration in which the fitting state is held by a lock mechanism of another member is also conceivable. However, in this configuration, not only does the cost of the separate member increase, but it is necessary to secure a space for disposing the separate member. Not suitable for structure.

  This invention is made | formed in view of this point, and it aims at providing the waterproof connector and waterproof connector apparatus which can ensure the waterproofness of a connection part by simple structure and space-saving.

One aspect of the waterproof connector of the present invention is:
A convex fitting portion that is inserted into a concave mating portion in which a connection terminal is disposed inside the mating connector;
A terminal that is disposed in the fitting portion and connected to the connection terminal of the mating connector when the fitting portion is inserted into the mated portion;
A waterproof connector comprising:
On the outer peripheral surface of the fitting portion,
A waterproofing member that is provided over the circumferential direction of the outer peripheral surface and seals the connection portion between the connection terminal and the terminal in an airtight manner in close contact with the inner peripheral surface of the fitted portion;
Provided at a position different from the waterproof member on the outer peripheral surface, and generate friction by intimately adhering to the inner peripheral surface of the fitted portion, and the direction opposite to the insertion direction of the fitting portion A friction member for restricting movement of the fitting portion in the pulling direction;
The structure which has is taken.

One aspect of the waterproof connector device of the present invention is:
A waterproof connector having a convex fitting portion in which a terminal is disposed;
A recessed mating portion into which the mating portion is inserted and mated, and disposed in the mated portion and connected to the terminal when the mating portion is inserted into the mated portion A mating connector having a connected terminal,
When inserting the fitting portion into the fitted portion, an airtight sealed state is formed between the outer peripheral surface of the fitting portion and the inner peripheral surface of the fitted portion, and the connection terminal and the A waterproof member that waterproofs the connection with the terminal;
When the fitting portion is inserted into the fitted portion, the airtight sealing state with the outer peripheral surface or the inner peripheral surface is formed before the airtight sealed state is formed by the waterproof member. And generating friction, and while the hermetic sealing state is formed, the generation of friction due to the non-hermetic contact state is continued, and the direction opposite to the insertion direction of the fitting portion is maintained. A friction member for restricting movement in the pulling direction;
The structure which has is taken.

  According to the present invention, the waterproofness of the connection portion can be ensured with a simple configuration and space saving.

It is a figure which shows the external appearance of a pulse oximeter probe provided with the waterproof connector which concerns on one embodiment of this invention. It is a figure where it uses for description of the socket which comprises a waterproof connector apparatus with the waterproof connector which concerns on one embodiment of this invention. It is a side view of the waterproof connector which concerns on one embodiment of this invention. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. 1 is a perspective view showing a waterproof connector according to an embodiment of the present invention. It is CC sectional view taken on the line of FIG. It is a front view which shows the connection state of the waterproof connector and socket which concern on one embodiment of this invention. It is a left view which shows the connection state of the waterproof connector and socket which concern on one embodiment of this invention. It is a figure which shows the connection operation | movement of the waterproof connector and socket which concern on one embodiment of this invention. It is a figure which shows the connection operation | movement of the waterproof connector and socket which concern on one embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing the external appearance of a pulse oximeter probe (hereinafter simply referred to as “probe”) having a waterproof connector according to an embodiment of the present invention. FIG. 1A is a view from the right, and FIG. It is the figure seen from the bottom. Moreover, FIG. 2 is a figure which uses for description of the socket which comprises a waterproof connector apparatus with the waterproof connector which concerns on one embodiment of this invention, and FIG. 2A shows the pulse oximeter main body as a small electronic device provided with a socket. FIG. 2B is an enlarged front view of a socket provided in the pulse oximeter.

  The waterproof connector 20 of the present embodiment is provided on the probe 10 connected to a pulse oximeter main body (see FIG. 2) 80 as a portable electronic device that can be miniaturized.

  The probe 10 shown in FIG. 1 is connected to a waterproof connector 20 that can be connected to the pulse oximeter main body 80 via a cable 30.

The probe 10 is a clip-type probe having a pair of housings 11 and 12. The probe 10 is attached to the subject's finger by the housings 11 and 12 and measures the arterial blood oxygen saturation (SpO ₂ ). The rear end portions 11a and 12a of the housing 11 and the housing 12 operate to open and close the clip. The housing 11 and the housing 12 are connected to each other by a connecting portion 14 on the rear end portions 11a and 12a side so as to be swingable, and the front end portions 11b and 12b are close to each other and can be opened and closed. Thereby, when the user (examiner or the subject himself / herself) pinches the opening / closing operation part 13, the front end parts 11b and 12b side of the housing 11 and the housing 12 are opened. Thus, the subject's finger is inserted between the housing 11 and the housing 12 from the finger insertion port 15 side, the housing 11 pinches the finger from the nail side, and the housing 12 pinches the finger from the belly side of the finger. Is possible.

  Although not shown, the probe 10 emits red light or infrared light using a light emitting element such as a light emitting diode, and detects light transmitted through the finger using a light receiving element such as a photodiode. A signal to be detected is sent to the waterproof connector 20 via the cable 30, and is sent to the pulse oximeter main body 80 by connecting the waterproof connector 20 to the socket 90. The pulse oximeter main body 80 is a signal processing circuit that performs arterial blood oxygen saturation measurement processing using the transmitted light detection signal detected by the probe 10, and detects fluctuations in the light detection level synchronized with the pulse of arterial blood. The case is compared with the case of infrared light. The arterial oxygen saturation is calculated from the ratio.

  As shown in FIG. 2, the pulse oximeter main body 80 is exposed on one side surface 82 and has a socket 90 as an example of a mating connector of the waterproof connector 20.

  The socket 90 is arranged in a recessed portion in a part of the casing of the pulse oximeter main body 80, and in the recessed fitted portion 92, in the center of the bottom surface of the fitted portion 92. The connection terminal 96 is provided, and a columnar portion 94 in which the connection terminal 96 is disposed. The socket 90 is formed integrally with the housing of the pulse oximeter body 80, and the fitted portion 92 and the columnar portion 94 are insulators and are integrally formed with the housing. Further, the connection terminal 96 is positioned in the columnar portion 94, for example, with one end side exposed to the outside being formed in a cylindrical shape and the other end side being a pin shape. By providing the connection terminal 96 positioned in this manner by insert molding in the housing, it is possible to prevent water from entering the pulse oximeter body 80 via the connection terminal 96.

  The socket 90 is formed to correspond to the waterproof connector 20, and the shape and position of each of the recessed fitting portion 92, the columnar portion 94, and the connection terminal 96 correspond to the shape of the waterproof connector 20. Moreover, since the recessed fitting part 92 and the columnar part 94 have different external shapes on the left and right when viewed from the front, the direction of the waterproof connector 20 to be fitted thereto is defined. The socket 90 and the waterproof connector 20 constitute a connector device.

  3 is a side view of a waterproof connector according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB in FIG. It is. 6 is a perspective view showing a waterproof connector according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along the line CC of FIG.

  As shown in FIGS. 3 to 7, the waterproof connector 20 includes a connector cover 21, a convex fitting portion 22, a terminal 23 disposed in the convex fitting portion 22, a waterproof member 24, And a friction member 25.

  The connector cover 21 is introduced with an end portion of a cable connected to the terminal 23 in the fitting portion 22. The connector cover 21 is preferably formed of an insulating material, for example, a polyester elastomer.

  The convex fitting portion 22 is inserted and fitted into the concave fitting portion 92 of the pulse oximeter main body 80. The fitting portion 22 is provided so as to protrude from the bottom surface of the connector cover 21, and the protruding portion has a cylindrical shape corresponding to the shape of the fitted portion 92 and has a hollow portion 224 inside. The columnar portion 94 of the socket 90 is fitted in the hollow portion 224 of the cylindrical portion of the fitting portion 22, and the terminal 23 protrudes from the bottom surface toward the opening side inside the cylindrical portion of the fitting portion 22. Is arranged. Here, the terminal 23 is a pin terminal, and when the fitting portion 22 is inserted into the fitted portion 92, the terminal 23 is inserted into the cylindrical portion of the connection terminal 96 and is connected to the connection terminal 96 in a conductive manner.

  Here, the terminal 23 is insert-molded in the fitting portion 22, and airtightness is maintained between the terminal 23 and the fitting portion 22. That is, water does not enter from the inside of the fitting portion 22 into the waterproof connector 20. The terminal 23 is connected to a conductive wire (not shown) of a cable wired in the connector cover 21 on the fixed end side fixed to the fitting portion 22.

  The fitting portion 22 may be formed of an insulating material such as ABS or PC (Polycarbonate).

  In the fitting portion 22, a friction member 25 and a waterproof member 24 are arranged on the outer peripheral surface 221 in order from a protruding end portion that is an end portion on the insertion direction side with a predetermined interval.

  The waterproof member 24 is provided over the circumferential direction of the outer peripheral surface 221. When the fitting part 22 is inserted into the fitted part 92, the waterproof member 24 is elastically deformed and tightly adheres to the inner peripheral surface 921 (see FIG. 2) of the fitted part 92. At this time, the columnar portion 94 is inserted inside the fitting portion 22, and the terminal 23 and the connection terminal 96 are connected. The waterproof member 24 waterproofs the connection terminal 96, the terminal 23, and the connection portion.

The friction member 25 is provided at a position different from the waterproof member 24. The friction member 25 is in airtight contact with the inner peripheral surface 921 (see FIG. 2) of the fitted portion 92 to generate friction. Thereby, in the state in which the fitting part 22 is inserted in the to-be-fitted part 92, the friction member 25 regulates the movement of the fitting part 22 in the insertion / extraction direction.
In the present embodiment, the friction member 25 is provided closer to the insertion direction than the waterproof member 24. The friction member 25 is preferably arranged on the outer peripheral surface 221 so as to be point-symmetric about the central axis of the fitting portion 22. The friction members 25 are respectively arranged on the outer peripheral surface 221 of the fitting portion 22 so as to sandwich the terminals 23 at equal intervals. Thereby, when fitting with the to-be-fitted part 92, the fitting part 22 does not shift in position or the terminal 23 does not tilt, and is suitably connected to the connection terminal 96 in a positioned state.

  The friction member 25 has the outer peripheral surface 221 or the inner peripheral surface 921 before or at the same time as the airtight sealed state is formed by the waterproof member 24 when the fitting portion 22 is inserted into the fitted portion 92. In addition, a non-airtight contact state may be formed to generate friction. In addition, the friction member 25 continues to generate friction due to the non-hermetic contact state while the hermetic sealed state is formed, and moves in the pulling direction opposite to the insertion direction of the fitting portion 22. To regulate.

Further, the friction member 25 has portions (airtight portions) 251 and 252 that are in airtight contact with the inner peripheral surface 921 in the circumferential direction. If the direction in which the cable 30 is led out from the waterproof connector 20 in the present embodiment is the rear side of the waterproof connector 20, the airtight portions 251 and 252 of the friction member 25 have both side wall surfaces along the front-rear direction (see FIG. 5 on the outer surface of the wall portion sandwiching the hollow portion 224 in the vertical direction. The airtight portions 251 and 252 project outward from the outer peripheral surface 212 and generate friction with the inner peripheral surface 921 in the friction member 25.
Note that the friction member 25 of the present embodiment has portions (non-airtight portions) 253 and 254 that do not make airtight contact with the inner peripheral surface 921 in addition to the airtight portions 251 and 252 (see FIG. 5). The non-hermetic portions 253 and 254 do not contact the inner peripheral surface 921 and form non-hermetic portions.

  In the present embodiment, the waterproof member 24 is an O-ring, and when the fitting part 22 is inserted into the fitted part 92, the outer peripheral surface 221 of the fitting part 22 is uniformly crushed over the entire circumference. Be placed.

  In addition, the friction member 25 is also composed of an O-ring similar to the waterproof member 24 here. If the friction member 25 and the waterproof member 24 are made of the same member, the number of parts can be reduced as compared with the case where both are formed separately, and the manufacturing cost can be reduced.

  As shown in FIGS. 6 and 7, a plurality of groove portions 226 and 228 extending in the circumferential direction are formed on the outer peripheral surface 221 of the fitting portion 22.

  The groove portion 226 is formed at a certain depth on the outer periphery of the fitting portion 22, and an O-ring as the waterproof member 24 is fitted inside the groove portion 226, and is equal in length to the radial direction side from the outer peripheral surface 221. Arranged so as to overhang.

  On the other hand, the groove portion 228 extends in the circumferential direction on the outer peripheral surface 221, but the depth is different.

  As shown in FIG. 7, the depth of the groove portion 228 is set to the groove portion in the front and rear wall portions of the outer peripheral surface 221 of the fitting portion 22 that sandwich the terminal 23 and face each other through the terminal 23 from the front and rear direction of the waterproof connector 20. It is deeper than the depth of 226. The outer diameter of the friction member 25 disposed in the groove 228 is a length that is in close contact with the inner peripheral surface 921 at a part (the airtight portions 251 and 252) disposed on both side wall surfaces, and is disposed on the front and rear wall surface portions. It is a length that does not adhere to the inner peripheral surface 921 (see FIG. 2) in a part (non-airtight portions 253, 254). Thereby, in the circumferential direction of the site | part in which the friction member 25 is arrange | positioned in the outer peripheral surface 221, it can be made to contact | adhere partially with the inner peripheral surface 921, and a friction can be generate | occur | produced.

The friction member 25 is an O-ring, and the outer peripheral surface 221 of the fitting portion 22 is provided so as to extend in the circumferential direction so that the O-ring can be attached, and the O-ring protrudes unevenly in the radial direction. It has a groove 228 having different depths in the direction.
Accordingly, when an O-ring similar to the waterproof member 24 is externally fitted as the friction member 25 in the groove portion 228, the friction member 25 is formed on the outer peripheral surface 221 of the fitting portion 22 as shown in FIGS. The portions arranged on the front and rear wall portions and the both side wall surfaces differ from the waterproof member 24 in the length of overhang and become uneven. The O-ring as the friction member 25 arranged on the entire circumference of the outer peripheral surface 221 is in a position where the outer peripheral surface 221 contacts the inner peripheral surface 921 and generates friction as airtight portions 251 and 252 arranged on both side wall surfaces. Be placed. Moreover, it arrange | positions so that it may be located in the position which recedes from the outer peripheral surface 221 as the non-hermetic site | part 253,254 arrange | positioned in the front-and-back wall part in the outer peripheral surface 221 (refer FIG. 9).

  The O-ring as the waterproofing member 24 shown by hatching in FIG. 4 is uniform over the entire circumference of the outer peripheral surface 221. On the other hand, in the O-ring as the friction member 25 shown by hatching in FIG. 5, the non-hermetic portions 253 and 254 fitted on the front and rear wall portions of the outer peripheral surface 221 are the portions 241 at the same portion of the waterproof member 24, The length in the overhang direction is shorter than 242. Thereby, in this location, the friction member 25 does not slide on the inner peripheral surface 921 of the fitted portion 92, and friction is not generated.

  If the friction member 25 is an O-ring, the outer peripheral surface 221 of the fitting portion 22 is changed from the outer peripheral surface 221 of the O-ring as the friction member 25 attached in the groove 228 by appropriately changing the depth of the groove 228. The overhang length can be changed to a suitable length.

  FIG. 8 is a front view showing a connection state between the waterproof connector and the socket according to the embodiment of the present invention, and FIG. 9 shows a connection state between the waterproof connector and the socket according to the embodiment of the present invention. It is a left view shown. 8 and 9 and FIG. 10 and FIG. 11 in addition thereto, for convenience, the structure of the waterproof connector 20 on the waterproof member 24, friction member 25, and socket 90 side is partially shown as a sectional view.

  The waterproof connector 20 shown in FIGS. 8 and 9 constitutes a waterproof connector device together with a socket 90 as a mating connector, the waterproof member 24 and the friction member 25. According to the waterproof connector 20, it has the convex fitting part 22 by which the terminal 23 was arrange | positioned inside. A socket 90 which is a mating connector is provided in a recessed fitting portion 92 into which the fitting portion 22 is inserted and fitted, and in the fitting portion 92, and the fitting portion 92 is provided in the fitting portion 22. And a connected terminal 96 that is connected to the terminal 23 when inserted. The waterproof member 24 forms an airtight sealed state between the outer peripheral surface 221 of the fitting portion 22 and the inner peripheral surface 921 of the fitted portion 92 when the fitting portion 22 is inserted into the fitted portion 92. Thus, the connection portion between the connection terminal 96 and the terminal 23 is waterproofed. The friction member 25 is not airtight with the outer peripheral surface 221 or the inner peripheral surface 921 before the airtight sealed state is formed by the waterproof member 24 when the fitting portion 22 is inserted into the fitted portion 92. In addition to generating friction by generating a close contact state, and maintaining the generation of friction due to the non-tight contact state while the airtight sealed state is formed, the insertion direction of the fitting portion 22 is reversed. Regulates movement in the direction of falling out.

  As shown in FIG. 9, the friction member 25 does not contact the inner peripheral surface 921 of the mated portion 92 in the socket 90 at the front and rear surface portions of the outer peripheral surface 221 of the fitting portion 22, but is shown in FIG. 8. Thus, the both side surface portions of the fitting portion 22 are in close contact with each other. Thereby, the waterproof member 24 provides waterproofing between the fitting portion 22 and the fitted portion 92, and the friction member 25 prevents the waterproof connector 20 from being lifted after insertion.

  10 and 11 are diagrams showing a connection operation between the waterproof connector and the socket according to the embodiment of the present invention.

  Further, as shown in FIG. 10, when the waterproof connector 20 is to be connected to the socket 90, as shown in FIG. 10, the concave fitting portion 92 has a convex shape having an outer shape corresponding to the fitting portion 92. A shaped fitting portion 22 is inserted. Since the outer peripheral surface 221 of the fitting portion 22 is provided with a waterproof member 24 that ensures airtightness with the concave fitting portion 92, the fitting portion 22 is inserted into the fitting portion 92 as it is. Then, the inside of the fitted portion 92 becomes a space close to hermetically sealed by the fitting portion 22, and air is compressed by the insertion state of the fitting portion 22.

  According to the present embodiment, as shown in FIG. 11, the air pressure in the fitted portion 92 generated when the waterproof connector 20 is fitted by the friction member 25 is changed to the non-airtight portion 253 of the friction member 25, Relax through 254 (air flow is indicated by arrows). On the other hand, the friction member 25, together with the waterproof member 25, generates friction against the air pressure, and can prevent the waterproof connector 20 from being lifted from the socket 90.

  Thus, unlike the conventional case, it is not necessary to provide an air chamber for relaxing the air pressure, and it is not necessary to secure a space for arranging another member. Therefore, it is possible to ensure waterproofness with a simple configuration and space saving.

  Moreover, although the waterproof connector 20 of this Embodiment was demonstrated as a structure used for the pulse oximeter, it is not restricted to this, Both a connector and the electronic device connected via a connector can ensure waterproofness. . The present invention can also be applied to a connector device that connects fluid flow paths.

In the present embodiment, the waterproof member 24 and the friction member 25 are provided on the waterproof connector 20, but it goes without saying that they may be provided on the inner peripheral surface 921 side. In this case, the waterproof member 24 is disposed on the bottom surface side of the concave fitting portion 92, and the friction member 25 is provided on the opening side of the concave fitting portion 92. Even with this configuration, it is possible to obtain the same operational effects as in the present embodiment.
Further, the waterproof member 24 may be provided on the waterproof connector 20 side, and the friction member 25 may be provided on the socket 80 side. When the fitting portion 22 is inserted into the fitted portion 92 and fitted through the waterproof member 24, the friction member 25 is brought into tight contact with the inner peripheral surface 921 simultaneously with the fitting. May be.

  Further, the friction member 25 in the present embodiment has been described by applying the same O-ring as the waterproof member 24. However, the friction member 25 partially adheres to the inner peripheral surface 921 of the fitted portion 92 in the circumferential direction to generate friction. However, it may be provided in any manner as long as the movement in the pulling direction opposite to the insertion direction of the fitting portion 22 is restricted. For example, instead of the O-ring, a single friction body may be provided at a predetermined location on the outer peripheral surface 221 of the fitting portion 22.

  The embodiment of the present invention has been described above. The above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. That is, the description of the configuration of the apparatus and the shape of each part is an example, and it is obvious that various modifications and additions to these examples are possible within the scope of the present invention.

  The waterproof connector and the waterproof connector device according to the present invention have an effect of ensuring a waterproof property with a simple configuration and saving space, connection between portable electronic devices, connection between a portable electronic device and an electronic component, or This is useful for connecting fluid flow paths.

DESCRIPTION OF SYMBOLS 10 Probe 11, 12 Housing 15 Finger insertion port 20 Waterproof connector 21 Connector cover 22 Fitting part 23 Terminal 24 Waterproof member 25 Friction member 30 Cable 80 Pulse oximeter main body 82 Side surface 90 Socket 92 Part to be fitted 921 Inner peripheral surface 96 Connection Terminal 11a Rear end portion 11b Front end portion 221 Outer peripheral surface 224 Hollow portion 226 Groove portion (first groove portion)
228 groove (second groove)

Claims (5)

A convex fitting portion that is inserted into a concave mating portion in which a connection terminal is disposed inside the mating connector;
A terminal that is disposed in the fitting portion and connected to the connection terminal of the mating connector when the fitting portion is inserted into the mated portion;
A waterproof connector comprising:
On the outer peripheral surface of the fitting portion,
A waterproofing member that is provided over the circumferential direction of the outer peripheral surface and seals the connection portion between the connection terminal and the terminal in an airtight manner in close contact with the inner peripheral surface of the fitted portion;
Provided at a position different from the waterproof member on the outer peripheral surface, and generate friction by intimately adhering to the inner peripheral surface of the fitted portion, and the direction opposite to the insertion direction of the fitting portion A friction member for restricting movement of the fitting portion in the pulling direction;
Having
Waterproof connector. The friction member is provided closer to the insertion direction than the waterproof member.
The waterproof connector according to claim 1. The friction member is an O-ring;
An outer peripheral surface of the fitting portion is provided so as to extend in the circumferential direction so that the O-ring can be mounted, and a groove portion having a different depth in the circumferential direction so as to project the O-ring unevenly in the radial direction. Have
The waterproof connector according to claim 1 or 2. Both the waterproof member and the friction member are provided to project radially from the outer peripheral surface,
In at least some of the radial directions, the length that the friction member protrudes is shorter than the length that the waterproof member protrudes,
The waterproof connector according to any one of claims 1 to 3. A waterproof connector having a convex fitting portion in which a terminal is disposed;
A recessed mating portion into which the mating portion is inserted and mated, and disposed in the mated portion and connected to the terminal when the mating portion is inserted into the mated portion A mating connector having a connected terminal,
When inserting the fitting portion into the fitted portion, an airtight sealed state is formed between the outer peripheral surface of the fitting portion and the inner peripheral surface of the fitted portion, and the connection terminal and the A waterproof member that waterproofs the connection with the terminal;
When the fitting portion is inserted into the fitted portion, the airtight sealing state with the outer peripheral surface or the inner peripheral surface is formed before the airtight sealed state is formed by the waterproof member. And generating friction, and while the hermetic sealing state is formed, the generation of friction due to the non-hermetic contact state is continued, and the direction opposite to the insertion direction of the fitting portion is maintained. A friction member for restricting movement in the pulling direction;
A waterproof connector device having:

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