JP3124613U - Self-help cleaning structure for charging contacts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a charging failure from occurring due to a contact failure caused by a film formed by adhesion of oil, grease, dust, etc. on a charging contact when charging a cordless telephone. It is an object to provide a self-help cleaning structure for contacts.
When a cordless telephone 10 is placed on a charging base 15 to perform charging, an elastic piece 13 formed integrally with the charging base 15 and having a wiping projection at the tip is bent, and the charging fixed contact 14 is contacted before the contact closing pressure contact, and the film formed by the soiling of hand oil and dirt, dust and dirt adhering to the contact surface portion of the charging fixed contact 14 is scraped off.
[Selection] Figure 1

Description

  The present invention relates to a self-help cleaning structure for a contact surface portion of a charging fixed contact in a cordless telephone.

  Conventionally, a cordless phone has a fixed charging contact. The contact surface of this charging fixed contact is coated with oil, grease, dust, or other dirt on the surface when operating or talking with the cordless cordless handset. When charging is performed, the contact failure occurs between the charging fixed contact and the charging movable contact provided on the charging stand, and the problem of charging failure occurs. In order to solve such a problem, for example, as shown in Japanese Patent Application Laid-Open No. 08-097890, the movable contact and the fixed contact are rubbed against each other and the movable contact and the fixed contact are constantly cleaned by this rubbing. It has been proposed to maintain a good contact relationship.

  In such a conventional cleaning method for the cordless telephone, since the metal terminals are rubbed against each other, there is a possibility that the surface contact portion of the contact may be worn heavily.

  The present invention solves such a conventional problem, and when the cordless cordless handset is placed on the charging stand, it is fixed for charging to which a film due to dirt such as oils and dirt of hands and dirt is attached. Provide a self-help cleaning structure for a charging fixed contact in a cordless telephone, which prevents premature charging and reduces wear on the contact surface of the contact by pre-wiping the contact surface of the contact before closing the contact. For the purpose.

  In order to achieve this object, the self-help cleaning structure for a charging contact according to the present invention is an elastic piece having a wiping projection at the tip, which is formed integrally with the charging base on the contact opening / closing pressure contact portion of the charging base. The slave unit is further provided with a concave recess for accommodating the tip protrusion at a portion corresponding to the tip protrusion of the elastic piece on the charging stand side when the charging stand is placed.

  Therefore, according to the self-help cleaning structure of the charging fixed contact of the present invention, when placing the cordless cordless handset on the charging stand without increasing the number of parts, provided on the upper part of the contact opening and closing pressure contact portion of the charging stand, An elastic piece with a wiping projection at the tip formed integrally with the case on the charging base is coated with dirt such as oil and grease on the hand, dust, and dirt before the contact is closed. Since the contact with the surface contact portion of the charging fixed contact to which or the like is attached and pre-wiping is performed, the charging failure is reduced. Further, since the non-metallic protrusion having the spring property formed integrally with the casing on the charging base contacts and cleans the charging fixed contact, there is an effect that the wear of the surface contact portion of the charging fixed contact is reduced.

  Hereinafter, an embodiment of a self-help cleaning structure for a charging fixed contact according to the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing a configuration of the embodiment and in a state in which the cordless slave unit starts to move to the charging stand. Arrow A shows the shape of the elastic piece 13 having a wiping projection at the tip. Further, in FIG. 1a, D1 indicates the full length of the cordless slave unit 10, and D2 indicates that no load is applied to the charging base receiver side surface 17 and the elastic piece 13 having a wiping projection at the tip when the slave unit is not mounted. The dimension between the front-end | tip protrusion parts in a state is shown.

  Since the D2 dimension is smaller than the D1 dimension, when the cordless handset 10 is placed on the charging stand 15, the elastic piece 13 having a wiping projection at the tip is charged when moving from the position shown in FIG. 1 to the position shown in FIG. The cordless handset 10 is pressed in the direction of the charging base receiving unit side surface 17 by the reaction force of the base 15 when it is bent. The elastic piece 13 having a wiping projection at the tip is in contact with the charging fixed contact 14 before the contact closing pressure contact, and is caused by dirt such as oil and fat, dust and dirt adhering to the contact surface portion of the charging fixed contact 14. Scrape off film.

  Further, during the movement to the position of FIG. 3, the tip protrusion of the elastic piece 13 having the wiping protrusion at the tip is accommodated in the protrusion accommodating portion 12, so that the elastic piece is not displaced and the cordless slave unit 10. Is no longer pressed in the direction of the side 17 of the charging stand receiver, so that the charging movable spring contact 16 contacts the pre-wiped charging fixed contact 14 and charging is started.

Sectional view of the state where the cordless handset starts to move to the charging stand Dimensions of cordless cordless handset and charging stand Sectional drawing of a state in which an elastic piece having a wiping projection at the tip starts to contact the charging fixed contact Sectional view of the cordless cordless handset placed on the charging stand

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cordless subunit | mobile_unit 11 subunit | mobile_unit receiving part end surface 12 protrusion accommodating part 13 Elastic piece 14 which has the protrusion for wiping in the front-end | tip part Charging fixed contact 15 Charging stand 16 Charging movable spring contact 17 Charging stand receiving part side surface

Claims (1)

  A cordless telephone device that includes a slave unit having a charging fixed contact and a charging stand having a movable spring contact point facing each other, and performs charging when the two contacts are pressed. Provided with an elastic piece having a wiping projection at the tip portion, which is formed integrally with the charging stand, in the slave unit, at a position corresponding to the tip projection portion of the elastic piece on the charging stand side when the charging stand is placed, A self-help cleaning structure for a charging contact, wherein a concave recess is provided to accommodate the tip protrusion.

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