JPH0442209Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] The present invention is an attachment/detachment fitting for automobile seatbelts, more specifically, a fitting for attaching and detaching a seatbelt for a car, and more specifically, a fitting for attaching and detaching a seatbelt for a car, and more specifically, a fitting for attaching and detaching a seatbelt for a car so that a seatbelt wearer can immediately escape from the vehicle in the event of an emergency such as a collision. The present invention relates to an attachment/detachment fitting that allows the seatbelt to be quickly released.

[Conventional technology and its problems]

Seat belts in automobiles are an extremely effective means of protecting the lives of drivers and passengers from traffic accidents, and recently it has become compulsory for front seats to wear seat belts.

However, since seatbelts restrain people in their seats, although they can be a life-saving measure against the impact of an accident, they become a factor that hinders escape from the vehicle. In particular, car fires are common in collisions and falls.
In such cases, a momentary delay in releasing the seatbelt could be fatal. Conventional seatbelts are designed so that the attachment/detachment fitting can be released with a single touch, but in a panic situation immediately after an accident,
Alternatively, it is quite conceivable that the metal fittings cannot be released quickly in an injured state, and this possibility is even higher for elderly people and children.

The present invention has been made in view of the above-mentioned conventional problems, and it is an object of the present invention to provide an attachment/detachment fitting that can quickly release a seatbelt immediately after an emergency such as a traffic accident.

[Means for solving problems]

The attachment/detachment fitting of the present invention, like conventional fittings, consists of a main body fitting, each of which is attached to a belt, and a connecting fitting detachably connected to the main body fitting.

The connecting fitting has an engaged portion in its main body fitting insertion portion, with which a member on the main body fitting side is to be engaged.

The main body fitting has a casing having an insertion port for the connecting fitting, and an engaging portion to be engaged with the engaged portion of the connecting fitting, and can be pushed down into the casing using the end on the insertion port side as a fulcrum. a metal fitting locking member provided, a disconnecting member slidably or tiltably attached to the casing to push down the metal fitting locking member by manual operation, and a biasing member within the casing to apply a downward force to the metal fitting locking member. The holding member is made of resin and is configured to hold the pushing down means against the biasing action, and an electric heating element is provided to heat the holding member.

[Effect]

In a normal state, the holder holds the push-down means, and the push-down means does not apply a push-down force (a push-down force that would remove the connecting fitting) to the fitting locking member.

Also, when wearing a seat belt, the main body fitting insertion part of the connecting fitting is inserted into the main body fitting, and the engaging part (engaging protrusion) of the metal fitting locking member is inserted into the engaged part (through hole, etc.) of the insertion part. etc.) are engaged to lock the connecting fitting to the main body fitting.

In an emergency, when the switch is turned on manually or automatically and the electric heating element is energized, the resin holding body is heated and softened or melted by the electric heating element, and the biased push-down means breaks this holding body. . The released push-down means pushes down the metal fitting locking member, whereby the connecting metal fitting is released from the locked state by the metal fitting locking member and can be pulled out from the main body metal fitting. Normally, the insertion part of the connecting fitting is biased by a biasing means (spring, etc.) inside the main body fitting.
Due to this action, the insertion part is automatically removed from the main body metal fitting.

〔Example〕

1 to 3 show an embodiment of the present invention.

The attachment/detachment fitting of the present invention consists of a main body fitting 1 and a connecting fitting 2 detachably connected to the main body fitting, which is the same as conventional fittings.

The main body fitting 1 is fixed to a mounting portion on the vehicle body side, while a belt a is attached to the connecting fitting 2.

The connecting fitting 2 has a plate-shaped insertion part 3 to be inserted into the main body fitting, and a rectangular transparent part that is an engaged part with which a member on the main body fitting side is to be engaged is inserted into this insertion part 3. A hole 4 is formed.

The main body fitting 1 includes a casing 5, a fitting locking member 6 for locking the insertion portion 3 of the connecting fitting within the casing, and a locking state of the insertion portion by the fitting locking member by manual operation. Uncoupling member 7
, a push-down means 8 that is biased to apply a push-down force to the metal fitting locking member within the casing, a resin-made holder 9 that holds the push-down means against the biasing action, and a holding body 9 made of resin to hold the push-down means against the biasing action. It consists of an electric heating element 10 provided to heat the body.

The casing 5 has an insertion port 20 formed at one end thereof into which the connecting fitting insertion portion 3 is inserted, and guides one side of the inserted insertion portion 3 on both inner sides of the insertion port 20. A guide portion 21 is provided.

The fitting locking member 6 has an engaging protrusion 22 to be engaged with the through hole 4 on the connecting fitting side, and a spring is applied so that the engaging protruding portion 22 faces the connecting fitting insertion part in the casing. 23 in an inclined manner, and is configured to be able to be pushed down against the elastic force of the spring 23 using the end on the insertion port 20 side as a fulcrum.

The uncoupling member 7 is inside the casing 5, and
One end side comes into contact with the upper part of the tip of the metal fitting locking member 6,
It can be tilted using the other end as a fulcrum. This connection release member 7 is a flat pressing part 2 for pressing operation.
4 is exposed to the outside through a window hole 25 formed in the casing 5.

In this embodiment, the push-down means 8 is constituted by a leaf spring material 11, and its own elastic force provides a biasing action for pushing down the metal fitting locking member. The leaf spring material 11 is bent into a U-shape and is fixed to the inside of the casing via one side, and the other side constitutes the push-down means 8. At the tip of the other side, there is a contact portion 1 that should come into contact with the metal fitting locking member 6.
10 is formed by bending.

The holding body 9 is made of a wire rod made of resin (vinyl, etc.), and one end is fixed to the casing side, and the other end is fixed to the push-down means 8, and the push-down means 8 is attached by the elastic force of a plate spring material. The metal fitting locking member is held in a state where it is not pushed down against the force (at least in a state where the connecting metal fittings do not come off).

The electric heating body 10 is constituted by a heating wire, is wound around the holding body 9, and is configured to heat the holding body by applying electricity.

Electricity is supplied to this electric heating element 10 from a battery through a conductor 12, but it is preferable that the electricity to the electric heating element 10 be cut off after the lever body is released from the holding state. The structure is as follows. That is, the insulating member 1 is attached to the push-down means 8.
A contact 14 is provided through 3, and a conductor 15 on the negative side of the electric heating element is connected to this contact 14.
Further, a current-carrying contact 16 is attached to the inside of the casing via an insulating member 13, and the tip of the contact 1 of the push-down means is held by the holder 9.
4. This energizing contact 16 is connected to a battery via a conducting wire 17.

FIG. 4 shows another embodiment. In this embodiment, the push-down means 8 includes a lever body 18 whose one end is pivotally mounted inside the casing, and a spring 19 (coil) that biases the lever body 18. spring), and the tip of the lever body 18 is connected to the metal fitting locking member 6.
It is designed so that it can be engaged with the tip of the Holder 9
holds the lever body 18 against the biasing action of the spring 19.

In FIGS. 5 and 6, the push-down means 8 is composed of a cylindrical body 26 having an open top and located above the tip of the metal fitting locking member 6, and a spring 27 disposed within the cylindrical body 26. In this embodiment, the holding body 9 is disposed within the spring 27, and one end is fixed to the casing side, and the other end is fixed to the lower end of the cylindrical body 26.

In order to supply electricity to the electric heating element 10 attached to the holder 9, contacts 28 and 28' are provided on the outside of the cylindrical body 26 and can be electrically connected to both ends of the electric heating element 10, respectively. Part 3
Current-carrying contacts 29, 29' are provided which are in removable contact with the respective contacts 28, 28' via the contact points 29, 29'.

While the cylinder body 26 shown in FIGS. 5 and 6 is designed to act directly on the metal fitting locking member, the cylinder body 26 in FIG. lever body 3 engaged with member 6 for
1 is provided, and a cylindrical body 26 and a spring 27 are arranged above the lever body 31.

FIG. 8 also shows another embodiment, in which a connection release member 7' having a protrusion 32 for pressing the metal fitting locking member 6 is provided on the casing 5 via a pivot portion 33,
A push-down means 8 consisting of the cylindrical body 26 and a spring 27 is provided on the lower surface of the connection release member 7' so as to be held by a holder 9.

In FIGS. 9 and 10, the means for releasing the coupling fitting is of a sliding type rather than a push-in type as in the above embodiment.

The metal fitting locking member 6 is formed with an inclined guide surface 34, which is pressed down by a portion on the side of the disconnecting member described below that comes into contact with and slides thereon.

The connection release member 7'' is arranged in the casing 5 so as to be slidable in the connection fitting insertion direction while being guided on both sides thereof, and its finger hook protrusion 35 protrudes from the opening 36 of the casing 5. A slide portion 37 that slides in contact with the inclined guide surface 34 of the metal fitting locking member 6 is provided at the end of the member 7'' facing the metal fitting locking member 6. This slide portion 37 is configured as an inclined surface facing the inclined guide surface 34.

A spring 38 (coil spring) is interposed between the decoupling member 7'' and the base inside the casing, and biases the decoupling member 7'' toward the insertion port.

Note that the electric heating body 10 and battery are, for example,
It can be configured to be energized by a switch that operates based on impact detection by the impact sensor, so that when an impact such as an accident occurs, the switch is automatically turned on and becomes energized. Further, instead of such an automatic switch, or together with this automatic switch, a manual switch that can be operated by a driver or the like may be provided.

Note that the structures of the holder 9 and the electric heating element 10 are not limited to the above embodiments, and can be made as appropriate. Alternatively, the holding body 9 may have a cylindrical shape, and the electric heating body 10 may be arranged along the circumferential direction at an intermediate position.

Next, regarding the function of the above-mentioned detachable fittings,
The explanation will be given by taking as an example what is shown in FIGS. 1 to 3.

1 and 2 show the state in which the belt is attached, and the engaging protrusion 22 of the metal fitting locking member 6 engages with the through hole 4 of the main body metal fitting insertion part of the connecting metal fitting 2, and the connecting metal fitting 2
is secured to the main body fitting 1.

When the belt attachment is released by normal operation, when the pressing part 24 is pressed with a finger to tilt the connection release member 7 downward, the metal fitting locking member 6 is pushed down, and the locking state of the connection metal fitting 2 is released.

In addition, in the case of the sliding type shown in FIG. 9, the connection release member 7 is slid. As a result, the inclined guide surface 34 comes into contact with the slide portion 37 and pushes the metal fitting locking member 6 downward, and the engagement protrusion 22
is removed from the through hole 4, and the connecting fitting 2 is in a state where it can be removed.

Next, automatic cancellation in an emergency will be explained. When an accident or the like occurs, when the switch that should energize the electric heating element 10 is turned on automatically based on impact detection by a sensor or manually by the driver, the holding body is heated by the electric heating element 10. 9 softens or melts and is broken by the biased push-down means 8. The push-down means 8, which is no longer restrained by the holder 9, pushes the metal fitting locking member 6 downward. By pressing down, the connecting fitting 2 becomes in a state where it can be pulled out. Since the insertion portion 3 of the connecting fitting is biased by a spring (not shown) inside the main body fitting, the insertion portion 3 is automatically removed from the main body 1 due to its action.

Generally, when the connecting fitting is manually removed in a normal seatbelt wearing state, it is sufficient to push down the fitting locking member 6 with a force of 1 kilogram or less. On the other hand, in an accident, etc., when a disoriented passenger leans on the seat belt and a very large tension is applied to the belt, the through hole 4 on the connecting fitting side and the engaging protrusion on the main body fitting side 22 becomes very strong, and a large force of 6 to 7 kg is required to push down the metal fitting locking member 6.
In this regard, in the present invention, a large pushing down force can be obtained by the biased pushing down means 8, and therefore, regardless of the strong engagement state between the through hole and the engagement protrusion,
By pushing down the metal fitting locking member 6, the connecting metal fitting 2 can be appropriately released.

Further, due to the downward tilting of the push-down means 8, the contact between the energizing contact 16 and the contact point 14 is lost, and as a result, the electrical heating element 10 is no longer energized.
Therefore, overheating of the electric heating element is appropriately prevented.

In addition, since the present invention requires a certain amount of time (several seconds or less) for the holder 9 to heat up and break, the metal fittings will not come off instantly after an impact due to an accident, and the shield will remain attached until immediately after the impact. can.

Further, in each of the embodiments shown in FIGS. 5, 7, and 8, when the holding body 9 is broken due to heating by the electric heating element 10 and biasing action by the spring 27 as shown in FIG. The body 26 is pressed downward,
The tip of the metal fitting locking member 6 is pushed down directly or indirectly.

In addition, in this case, by moving the cylindrical body 26 downward, the contacts 28, 28' and the energizing contact 29,
There is no contact with 29', and the electric heating element 10 is no longer energized.

〔Effect of the invention〕

According to the present invention described above, the shield can be easily and quickly released in the event of an emergency such as an accident.
This allows the driver, etc. to quickly escape from the vehicle. In particular, the seatbelt attachment/detachment fitting is located in the center of the vehicle, so even if an attempt is made to rescue a passenger in the event of an accident, it may take time to release the attachment/detachment fitting from outside the vehicle. It can also be an extremely effective means of solving problems.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a longitudinal sectional view, Figure 2 is a partially enlarged view of Figure 1, and Figure 3 shows a state in which the holder is broken. It is also a partially enlarged view shown in FIG. FIG. 4 is a longitudinal sectional view partially showing another embodiment of the present invention. 5 and 6 show other embodiments of the present invention, in which FIG. 5 is a longitudinal sectional view, and FIG. 6 is a partially enlarged view of FIG. 5 showing the holding body in a broken state. FIG. 7 is a longitudinal sectional view partially showing another embodiment of the present invention.
FIG. 8 is a longitudinal sectional view showing another embodiment of the present invention. 9 and 10 show other embodiments of the present invention, in which FIG. 9 is a longitudinal sectional view and FIG. 10 is a perspective view showing the state in which the connection release member and the metal fitting locking member are attached. In the figure, 1 is the main body metal fitting, 2 is the connecting metal fitting, 3
is the insertion part, 4 is the engagement hole, 5 is the casing, 6
is a metal fitting locking member, 7, 7', 7'' is a connection release member,
Reference numeral 8 indicates a push-down means, 9 indicates a holding body, and 10 indicates an electric heating element.

Claims (1)

[Scope of utility model registration request] It consists of a main body metal fitting and a connecting metal fitting that is removably connected to the main body metal fitting, the connecting metal fitting has an engaged part in the main body metal fitting insertion part, and the main body metal fitting has an engaging part in the main body metal fitting insertion part. a casing having an engaging part to be engaged with the engaged part of the connecting fitting, and a fitting locking member provided in the casing so as to be able to be pushed down using the end on the insertion port side as a fulcrum; a decoupling member slidably or tiltably attached to the casing to push down the metal fitting locking member when operated; a push-down means biased within the casing to apply a downward force to the metal fitting locking member; A seatbelt attachment/detachment fitting comprising a resin holder for holding the means against the biasing action, and an electric heating element provided to heat the holder.