JP2006095040A - Connection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the connection cable receives a large tensile force and is often cut since the connection device is equipped with a lock mechanism during the daily bed transfer in a hospital or a welfare/care facility in a connection cable or a connection device of a calling out handset for the nurse call which is twisted around the bed. <P>SOLUTION: The connection device is so constituted that a magnet member is attached to the vicinity of a surface of a supporting member for the connection of the connection device and a point of contact member is made elastic or an elastomer is mounted on the point of contact member so that the connection is unfastened without damaging the connection cable and the connection device by using the magnetic attraction and the repulsive power of the elastomer even when the large tensile force is applied by the bed transfer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a connection device for a nurse call calling slave used in hospitals and welfare / care facilities.

Conventionally, nurse call equipment has a configuration shown in FIG. The nurse call facility shown in the figure has a nurse call calling handset (13, 14) installed on the bedside of hospital rooms A, B ... (room A, B ... in welfare / nursing facilities) and connected. It is connected to the wall mounting device (11) via the line (15) and the connecting device (12). Furthermore, from the wall mounting device, via the connecting line (15), the corridor lamp (10), and the connecting line (15), to the nurse call master unit installed in the nurse station (the staff station in the welfare / nursing facility). It is connected.

In the nurse call facility configured as described above, the nurse call parent device can be called by pressing the call button from the nurse call calling slave unit, and the facility having a call function can make a call. Also, the nurse call slave unit can be called from the nurse call master unit.

Nurse call equipment is a means for a patient (caregiver at a welfare / care facility) to call a nurse (caregiver at a welfare / care facility). It must not be possible to call because the connected device is disconnected. For this reason, a method of generating an alarm by detecting that no current flows through the connection line has been already known and adopted for disconnection or disconnection.

On the other hand, in order to prevent the connection device from coming off, a connection device having a disconnection prevention structure (lock mechanism) shown in the following (A) to (D) has been proposed. (A) Screwed connector facing with screw and nut (B) Claw-shaped member sandwiched between the opposing connector grooves by elastic force (C) Screw connection of round connector (D) There are examples shown in Patent Documents 1, 2, 3, and 4 in connection devices using magnets, in which a hole-opening member facing a screw-like protrusion is inserted into a hole and then fixed by sliding.
Patent Publication 2000-12145 Patent Publication No. 8-298164 Patent Publication 2003-303646 Patent Publication 8-203609

With conventional connection devices, when moving beds in hospitals and welfare / nursing facilities on a daily basis, the connection lines or connection devices of nurse call callers wound around the bed are often damaged by strong tension. Has occurred. The nurse call paging device is often used in a form in which a connection line is wound around the head fence or side fence of the bed because it is desired to be placed near the patient's hand so that the call can be made at any time.

Since the connection device has a disconnection prevention mechanism, the connection line is pulled strongly and breaks when the tension exceeds the tension limit of the connection line. If the connection line is changed to one having a high tension, the connection line will not be disconnected, but the connection device will be damaged.

If the connection device does not use a disconnection prevention mechanism and depends on the frictional force of the connection, it can be easily disconnected if the frictional force is weakened against the tension, but it can be easily disconnected during daily use, and the reliability of the connection Decreases.

Even when the connecting device does not use a disconnection prevention mechanism and depends on the frictional force of the connection, if the tension is applied to the wall surface in an oblique direction, the connecting device is not easily disconnected and the connecting device is damaged. In order to increase the frictional force of joining of the connection device, the contact member needs to be deeply joined to a certain extent. In deep joining, it is easy to come off with a force in the vertical direction, but it is hard to come off with a force in an oblique direction, and the contact member may be damaged. As shown in FIG. 5, the connecting device is connected to the wall mounting device (11). However, when the bed is moved along the wall surface, the connecting device is tensioned diagonally and does not come off easily. May be damaged.

The present invention can be applied to the case where the connection line of the nurse call caller wound around the bed is broken due to strong tension or the connection device is damaged when the bed is moved routinely in a hospital or welfare / care facility. The purpose is that the connecting device is disconnected, the connecting device is reconnected after the bed is moved, and the nurse call calling slave can be used continuously.

In order to achieve the above object, the present invention attaches a magnet member (2) in the vicinity of the opposing surface of the support member (1), which is an insulator of the connection device, and attaches an elastic body (5) to the support member (1). The contact members (4A, 4B) of the conductors attached via are opposed to each other, and the opposed contact members are joined by the magnetic attractive force between the opposed magnet members (2). The attracting force of the magnet member has an effect of preventing the connecting device from coming off. However, if the attracting force is set to be weaker than the tension limit of the lead conductor (3), the lead conductor { The connection device is disconnected before the connection line (15)} and the connection device are damaged.

The contact members (4A, 4B) can be securely joined and shallow (5 mm or less) by the attractive force of the magnet member (2) and the elastic force of the elastic body (5). On the other hand, the connection device can be disconnected without damaging the contact member and the support member even with respect to the tension applied in the oblique direction.

The same magnetic attractive force as described above can be obtained even if one of the magnet members (2) is a magnet member and the other is a ferromagnetic material such as iron.

By forming the magnet members opposed to each other with different magnetic poles, an attractive force works in the correct connection, and a repulsive force between the same magnetic poles works in the wrong connection, so that incorrect connection can be prevented in addition to retaining.

If a material having elastic force as shown in FIG. 2 is used for the contact members (4A, 4B), the same effect can be obtained without using the elastic body (5).

In the connection device of the present invention, the following effects (1) to (4) can be obtained. (1) The electrical connection of the contact member can be reliably performed without a lock mechanism. (2) When a strong tension is applied to the connection line, the external tension overcomes the magnetic attractive force before the connection line and the connection device are broken, and the connection is disconnected. This eliminates the need for repair or replacement of the connecting line or connecting device. (3) The connection device and the connection device and the tension applied obliquely to the wall surface of the connection device by shallowly bonding the contact member by the magnetic attractive force and the elastic force of the elastic body or the elastic force of the contact member The connection can be disconnected without damaging the connection line. (4) Connection can be made with a single touch and erroneous connection can be prevented.

The connection device of the present invention has the following embodiments (1) to (4). (1) Using a magnetic attractive force of a magnet member or a ferromagnetic material facing a magnet member attached near the surface of a support member that supports a contact member, a pair of connection devices of the connector means is prevented from being disconnected (a kind of Lock mechanism). (2) Due to the magnetic attractive force of the magnet member and the elastic force of the elastic body attached to the contact member or the elastic force of the contact member itself, the joining of the opposing contact member is reliable and the surface is made shallow by making the joining shallow. On the other hand, it is designed so that the connecting device can be easily detached even with an oblique tension. (3) The relationship between the connecting device and the connecting wire used for it and the tension applied to the connecting wire from the outside (strength against connecting device tension)> (limit tension of connecting wire)> (tension applied to connecting wire)> (magnetic) If there is a relationship of “attractive suction force”, the connecting device is disconnected and the connecting wire and the connecting device are not damaged. When the tension applied to the connecting line is weak and the magnetic attractive force is larger, the disconnection preventing function of (1) above works and the connecting device maintains the connected state. (4) An attempt is made to prevent erroneous connection by forming different magnetic poles on opposing magnet members attached in the vicinity of the surface of the support member.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a connection device having a structure of connectors A and B in which a magnet member (2) is attached to a support member (1), which is an insulator, at positions facing each other. Contact members (4A, 4B), which are conductors, are fixed to the support member (1) via elastic bodies (5). When not in the connected state, the contact member is pushed forward (toward the direction of the opposed contact member as the front) until it is limited by the support member due to the elastic force of the elastic body. A lead wire (3) connected to the outside of the connection device is electrically connected to the contact members (4A, 4B). In FIG. 1, the elastic bodies (5) are provided on both sides of the connectors A and B, but only one of them may be provided.

FIG. 2 is a connection device using a metal having an elastic force for the contact member (4B), and an elastic body is omitted.

FIG. 4 shows a structure when the connectors A and B of FIG. 1 are in close contact. Here, the opposing magnet members have different magnetic poles, and a magnetic attraction force acts to firmly connect the connectors A and B. The contact members (4A, 4B) projecting forward are pushed down to a position where the magnetic attraction force by the magnet member and the elastic force by the elastic body (5) are balanced, and 4A and 4B are electrically connected.

FIG. 3 shows a structure in which different magnetic poles are used for the opposing magnet members (2). In the figure, the upper and lower magnet members of the connector A are arranged on different magnetic poles (in the figure, the top is shown as N poles and the bottom is shown as S poles), and the connector B facing it has a different magnetic pole from the connector A. Is arranged. When the connectors A and B come close, the N pole and the S pole attract each other and the connectors A and B come into close contact with each other. When the connectors are moved upside down, the opposing magnetic poles become the same poles and repel each other, preventing reverse connection.

As shown in FIG. 3, when a tension higher than the magnetic attractive force is applied to the lead wires of the connecting devices (connectors A and B) that are in close contact with each other by the magnetic attractive force, the connection is released. At this time, if the proof stress with respect to the tension of the lead conductor and the proof stress with respect to the tension of the contact member of the connecting device are larger than the tension applied from the outside, the lead conducting wire and the connecting device will not be damaged. Utilizing this principle, the connection device of the nurse call caller does not damage the connection line and the connection device against strong tension.

Sectional view of connectors A and B showing before connection with elastic body attached to contact member Sectional view of connectors A and B showing the contact member before connection with elasticity Cross-sectional view of connectors A and B showing before connection preventing incorrect connection Sectional view of connectors A and B in joined state Nurse call equipment configuration diagram

Explanation of symbols

1. Support member 2. Magnet member 3
Lead conductor 4A, 4B Contact member 5. Elastic body 6. Contact support material 7. Nurse call master unit 8. Communication unit 9. Tuning / display unit 10. Corridor lamp 11. Nurse call slave unit (wall mounting device) 12 Connection device 13. Nurse call calling device (push button type) 14. Nurse call calling device (call function type) 15. Connection line

Claims (4)

A magnet member (2) is attached near the surface of a support member (1) which is an insulator, and a contact member (4A, 4B) of a conductor is supported on the support member (1) via an elastic body (5). A connection device for a nurse call calling slave that can be reliably connected even when the contact members are shallowly joined by means of a pair of means facing each other and the magnetic member's magnetic attractive force and the elastic member's repulsive force. By using a metal having elastic force for the contact member according to claim 1, the elastic body according to claim 1 is omitted, and the magnetic member's magnetic attraction force and the elastic force of the contact member ensure that the contact member is shallowly joined. A device for connecting a handset for calling a nurse call. 3. A connection device for a nurse call calling slave unit according to claim 1, wherein one of the opposing magnet members is replaced with a ferromagnetic material and exhibits a function similar to that of claim 1 and claim 2. In claim 1 and claim 2, by forming different magnetic poles on the opposing magnet members, they are connected by attracting different magnetic poles in the correct connection, and cannot be connected due to repulsion of the same magnetic pole in the incorrect connection. A connection device for a slave call calling device in which magnet members are arranged in the same manner.

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