JPH02198554A - Door assembly - Google Patents

Abstract

PURPOSE: To lessen a noise made in opening or closing a door, by having a means for energizing a door to the opening position and a latching means for fixing a cushioning member of the door to a detent to fix the door at the closing point, and putting the cushioning member out of the detent to move the door to the opening position. CONSTITUTION: A torsion spring is fixed between a hinge 22 and a door 18, and makes the door 18 turn to the opening position. When the door 18 is turned to the closing point against the torsion spring 26, the contact surface 30a of a latching member 30 is pressed by the roller 28 of the door 18, the latching member 30 is turned in the direction of an arrow 32, a spring 34 is compressed, and if the roller 28 reaches a detent 30b, the spring 34 is stretched and the door 18 is fixed to the closing position. The elastomeric roller 28 makes little noise, the latching member 30 is stopped by a ring 40 at the final fixed point, so that the noise is decreased. The noise made by the closing door 18 is restricted to the minimum at a gasket 42 around the window of a panel 16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates generally to door latches, and more particularly to infant incubator opening assemblies.

(Conventional technology and its issues) Infant incubator (infant 1ncubat).

The window latches of r) should have the following characteristics:

(1) Secure closure where the door cannot be pushed open from the inside with a specified force, usually less than 7.3 kg (15 lbs).

(2) the door is either clearly open or securely closed by a latch;
“Either/or” operation.

(3) It should be easy to open with your elbow.

(4) Quiet operation when locking and opening the door.

In general, currently available infant incubators have the above characteristics:
It has the first three features but lacks the fourth feature.

an infant incubator canopy having a rigid, reflective surface;
It is typically manufactured from acrylic sheet or similar material. The noise generated on the surface of the canopy is
It does not decay, but rather reverberates within the canopy. When the door is closed, in some incubators, 90 db
The highest noise levels of A or higher have been measured. Such noises can startle the infant in the incubator and cause discomfort.

SUMMARY OF THE INVENTION A door assembly constructed in accordance with the present invention is mounted on a support structure with a window and a structure that supports movement of the door between an open position and a closed position. Has a door. Means are provided for moving the door to an open position. Latch means are also provided between the door and the support structure for closing the door and locking the door in the closed position. The latching means comprises a shock absorbing member and a latching member that is engaged by the shock absorbing member when the two are engaged.

The latch member includes: (1) a contact surface that is engaged by contact with the shock absorbing member when the door moves to the closed position; and (if) a contact surface provided at the end of the contact surface that is provided at the end of the contact surface when the door moves to the closed position. and a detent for receiving the shock absorbing member and securing the shock absorbing member to the detent and securing the door in the closed position when the shock absorbing member reaches the detent. The latch member also includes means for disengaging the shock absorbing member and the latch member to disengage the shock absorbing member from the detent and allow the door to move to the open position.

The door assembly of the present invention includes a support structure with a window, a door, a means for mounting the door on the support structure for movement of the door between an open position and a closed position of the door, an open position of the door. means for urging the door and means for latching between the door and the support structure for closing and securing the door in the closed position, the latching means The means comprises: (a) a shock absorbing member; (b) (1) a contact surface that is engaged by contact with the shock absorbing member when the door is moved to the closed position; and (ii) the door is moved into the closed position. position at the end of the contact surface to receive the shock absorbing member when the shock absorbing member is reached, securing the shock absorbing member to the detent and securing the door in the closed position. a latch member comprising a detent; (c) means for biasing the shock absorbing member and the latch member; and (d) engagement of the shock absorbing member and the latch member. and means for releasing the shock absorbing member from the detent and allowing the door to move to the open position, thereby achieving the above object.

the door is mounted for rotational movement about a first axis, the shock absorbing member is a roller mounted for rotational movement about a second axis parallel to the first axis, and the contact It is also possible that a surface is engaged in rotating contact of the roller when the door pivots to the closed position.

The roller may be made of an elastomer material.

The means for engaging the roller and the latch member include means for mounting the latch member for pivoting movement about a third axis parallel to the first and second axes. You may do so.

The contact surface may be sloped to pivot the latch member in a first direction when the door pivots toward a closed position of the door.

The means for biasing the roller and the latch member into engagement includes a spring biasing the latch member to pivot in a second direction opposite to the first direction. You can.

The roller may be mounted on the door opposite the door mounting means, and the latch member may be mounted on the support structure on one side of the window opposite the door mounting means. The latch means further includes an elastomeric stop member attached to the latch member and arranged to engage the support structure as the latch member moves toward the support structure. may be provided.

the roller being mounted on the door opposite the door mounting means and the latch member being mounted on the support structure on one side of the window opposite the door mounting means; It can also be done.

The latch means further comprises an elastomeric stop member attached to the latch member and positioned to engage the support structure upon movement of the latch member in the second direction. It is also possible.

The door assembly of the present invention comprises: a windowed support structure;
a door, means for mounting the door on one side of the window on the support structure for pivoting movement of the door about a first axis between an open position and a closed position of the door; ,
a first spring biasing the door in a first direction to the open position; the mounting on the door such that the shock absorbing roller rotates about a second axis parallel to the first axis; a shock absorbing roller mounted opposite the means, the window on the support structure such that the latch member pivots about a third axis parallel to the trough axis and the second axis; The first
(1) a second direction opposite to the first direction in which the door pivots toward the closed position of the door; 1st
(2) a contact surface that, when pivoted against a spring, engages by rotational contact of the shock-absorbing roller to pivot the latch member in a first direction; and (2) when the shock-absorbing roller reaches the latch member; a second direction opposite to the first direction in which the claw member pivots;
the latch member having a detent at the distal end of the contact surface that allows the latch member to pivot in the direction;
biasing the latch member to pivot the latch member in the second direction in which the latch member pivots against the shock absorbing roller; Inside the stop,
A second spring for fixing the 1i shock absorbing roller with a latch, and a first spring on which the latch member pivots.
means for disengaging the shock absorbing roller from the detent to pivot in a direction, releasing the shock absorbing roller and the latch member and allowing the door to pivot to the open position; an elastomeric stop member attached to the latch member and positioned to engage the support structure when the latch member is rotated in a second direction of rotation of the latch member; This achieves the above objectives.

It is also possible for the contact surface to be inclined so that the latching member can be pivoted in the first direction in which the latching member pivots.

The present invention is an infant incubator door assembly comprising a windowed incubator cabinet door for movement of the door between an open position and a closed position. a canopy of the incubator; means for moving the door to the open position of the door; and means for closing the door and securing the door in the closed position. A hanging member between the canopy and the canopy,
The latch member is (a) a shock absorbing member, (b) (i
) a contact surface that engages by contact with the shock absorbing member when the door moves to the closed position; and (ii) a contact surface that engages by contact with the shock absorbing member when the door moves to the closed position and the shock absorbing member reaches the a latch member comprising a detent at the distal end of the contact surface for receiving a member and securing the shock absorbing member to the detent and securing the door in the closed position;
> means for biasing the shock absorbing member and the latch member into engagement, and (d) separating the shock absorbing member and the latch member to remove the shock absorbing member from the detent; Means are provided for enabling the door to move into the open position, whereby the above object is achieved.

the door is installed to rotate around a first axis; the shock absorbing member is a roller installed to rotate around a second axis parallel to the first axis; It is also possible that the contact surface engages by rolling contact with the roller when the door is pivoted into the closed position.

The roller may be made of elastomer material.

The present invention is an infant incubator door assembly comprising an incubator canopy, the canopy comprising:
a door; means for mounting the door on the canopy of the incubator to one side of the window for pivoting movement of the door about a first axis between an open position and a closed position of the door;
a first spring biasing the door to pivot the door in a first direction to the open position; and a second axis parallel to the first axis such that the shock absorbing roller rotates. on the door,
a canopy of the incubator for pivoting movement of the latch member about a third axis parallel to a shock absorbing roller, the first axis and the second axis, mounted on the opposite side of the mounting means; a latch member disposed above and on an opposite side of the window, the latch member comprising: (1) a second direction opposite to the first direction in which the door pivots toward the closed position of the door; (2) a contact surface engaged by rotational contact of the shock-absorbing roller to cause the latch member to pivot in a first direction when the door pivots against the first spring; When the shock absorbing roller reaches the first
a detent at the distal end of the contact surface for enabling the latch member to pivot in a second direction opposite to the direction in which the shock absorbing roller is rotated; The latch member is biased in the second direction of pivoting of the latch member against the shock absorbing roller to secure the latch member to the detent in the latch member. a second spring that rotates the member; the latch member is rotated in the first direction in which the latch member rotates; the shock-absorbing roller and the latch member are separated; means for disengaging the roller from the detent and allowing the door to pivot to the open position; and means attached to the latch member for pivoting the latch member in the second direction; an elastomeric stop member positioned to engage the canopy of the incubator upon movement of the cage member;
This achieves the above objective.

It is also possible for the contact surface to be inclined so as to pivot the latching member in the first direction in which the latching member pivots.

Although the invention is described with respect to an infant incubator, it may have applications where results comparable to those desired in an infant incubator are required therein.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an infant incubator canopy 10 comprising a pair of door assemblies 12 and 14 constructed in accordance with the present invention on a front door panel 16 that serves as a support structure for the door assemblies. shows. Each door assembly 12 and 14 includes a door 18 and 20, respectively, that covers a window in panel 16 when the respective door is closed. Doors 18 and 20 are each mounted on panel 16 for pivotal movement about axes defined by a pair of hinges 22 and 24.

As shown in FIG. 2, a torsion spring 26 is installed between the hinge 24 and the door 20. The twist panel 26 is
The door 20 is pushed and pivoted in the first direction to the door open position. A similar torsion spring is installed between the hinge 22 and the door 18.

Referring to FIGS. 3A, 3B, and 3C, which are bottom views depicting the door 18 in three successive states arranged in a closing order, a door assembly constructed in accordance with the present invention can be used for closing the door; A latching device is provided between the door 18 and the support structure 16 to secure the door in the closed position.

In the embodiment of the invention shown, the latching device has a shock absorbing member in the form of an elastomeric roller 28 mounted on the door 18 at the end opposite the hinge 22. Roller 28 is arranged for rotational movement about an axis parallel to the axis of hinge 22.

The latching device also includes a hinge 2 on the side of the opening in panel 16.
On the opposite side from 2, it has a latch member 30 installed on the panel 16. The latch member 30 is mounted for pivoting movement about an axis parallel to the pivot axis of the hinge 22 and the axis of rotation of the roller 28.

Referring to FIG. 4, the latch member 30 has a contact surface 30
a and a detent 30b at the end of the contact surface 30m. The contact surface 30a is an inclined surface that is engaged by rotational contact with the roller 28 and moves in the first direction, ie, in FIG. 3A, as the door 18 pivots against the torsion spring 26 toward the closed door position. It functions to pivot the latch member in the direction indicated by to bring it into the position shown in Figure 3B.

By pivoting the latching member in a second direction opposite the direction indicated by arrow 32, the spring 34 urges the latching member 30 and the roller 28.

The spring 34 extends between the end of the hole 36 in the latch member 30 and a pin 38 mounted in the hole 36 so as to slide against the panel 16 within the hole. When the latch member 30 is pivoted in the direction of arrow 32, the spring 34 is compressed. The roller 28 is the detent 3
Once 0b is reached, the latch member 30 is free to pivot in the opposite direction so that the spring 34 is able to extend and the latch member moves past the roller 28 and detents the roller. 30b.

This then fixes the door 18 in the closed position.

The latch device disengages the roller 28 and the latch member 30, removes the roller from the detent 30b, and closes the door 1.
Means are also provided for allowing 8 to pivot to the open position. Such means may include a handle 30c formed as part of the latch member 30. When pushed toward the handle 30cbC panel 16, the latch member 30 pivots in the direction of arrow 32 shown in FIG. 3A.

This movement of the latch member causes the torsion spring 26
roller 28 is removed from detent 30b to move door 18 to the open position.

There are four things that create noise in door assemblies constructed in accordance with the present invention. These four things are: (1) initial contact of the door with the latch member, (2) increasing engagement of the latch member, (3) movement of the latch member into its final position, and (4) support. The door elastomeric roller 28, which closes against the structure, is provided to address the first two issues. The rollers absorb energy that would otherwise be turned into noise, reducing the generated noise to frequencies so low that they are imperceptible to the human ear.

As the door 18 attempts to remain closed, the roller 28 attempts to pivot the latch member 30 further out of its initial position. The increasing engagement between the latch member 30 and the roller 28, matter (2), is a rolling contact rather than a sliding contact, which produces only a slight noise due to the soft rollers.

When the latch member 30 moves in the opposite direction to its final, fixed position, its movement towards the panel 16 is stopped by another elastomeric component, namely the ring 40, rather than by a hard surface on the latch member itself. It will be done. This reduces the noise caused by item (3).

Noise generated by the door 18 closing against the panel 16 is minimized by including a gasket 42 stretched around the window in the panel 16 closed by the door.

As to other features initially disclosed, a door assembly constructed in accordance with the present invention is latched such that the door cannot be forced open from within the incubator. This is because the pivot point of the latch member 30 is directly below the point of contact between the door 18 and the latch member when the door is in the closed position. Also, because of the rolling contact between roller 28 and latching member 30, latching is never partial.

Either a spring-loaded latch member latches the door 18 by rollers 28, or a torsion spring 26 pivots the door to the open position. Finally, the handle 30c is large enough for a user to push with their elbow to open the door.

It should be pointed out that the position of various parts of the described embodiments of the invention may be changed. For example, instead of mounting the roller 28 on the door 18 and mounting the latch 30 on the support structure 16, a latch may be mounted on the door so that the roller can be mounted on the support structure. Furthermore, instead of mounting the latching member 30 in a pivoting motion in conjunction with the roller 28, the roller can be mounted in a pivoting motion.

It should also be noted that the invention can also be applied to doors that are mounted to slide in a linear motion when the door is opened or closed.

Exemplary and preferred embodiments of the invention have been presented above. However, various applications will be apparent to those skilled in the art without departing from the spirit and scope of the invention.

4. of. What! B FIG. 1 is a perspective view of an infant incubator canopy with a door assembly constructed in accordance with the present invention.

Figure 2 is a partially sectional front view of a door hinge portion of a door assembly constructed in accordance with the present invention.

3A, 3B, and 3C are bottom views of a door assembly constructed in accordance with the present invention in three different sequential states arranged in a closing order.

FIG. 4 is a cross-sectional view of the latch portion of a door assembly constructed in accordance with the present invention.

lO... Canopy 12.14... Door assembly, 18.20... Door, 22.24-
No. 8, 28...roller, 3o...hanging member.

that's all

Claims (1)

Claims: 1. A door assembly comprising: a support structure with a window; a door; mounting the door on the support structure for movement of the door between an open position and a closed position of the door; means for urging the door into an open position; and means for latching between the door and the support structure for closing and securing the door in the closed position. (a) a shock absorbing member; (b) (i) a contact surface that is engaged by contact with the shock absorbing member when the door moves to the closed position; and (ii) a contact surface that is engaged by contact with the shock absorbing member when the door moves to the closed position. a detent at the distal end of the contact surface that, when reached by the shock absorbing member, receives the shock absorbing member, secures the shock absorbing member to the detent, and secures the door in the closed position; , (c) means for biasing the impact absorbing member and the locking member, and (d) disengaging the impact absorbing member from the locking member; A door assembly comprising: latching means having means for disengaging the shock absorbing member from the detent and allowing the door to move to the open position. 2. The door is installed to pivot around a first axis, and the shock absorbing member is installed to rotate around a second axis parallel to the first axis.
2. The door of claim 1, wherein the door is a roller mounted for rotational movement about an axis, the contact surface being engaged in rotating contact of the roller when the door is pivoted to the closed position. assembly. 3. The door assembly according to claim 2, wherein the roller is made of elastomer material. 4. Means for mounting the latch member such that the roller and the means for engaging the latch member are pivoted about a third axis parallel to the first and second axes. 4. The door assembly of claim 3, comprising: 5. The door assembly of claim 4, wherein the contact surface is sloped to pivot the latch member in a first direction when the door pivots toward the closed position of the door. 6. The means for biasing the roller and the latch member into engagement biases the latch member to engage the first latch member.
6. The door assembly of claim 5, further comprising a spring for pivoting in a second opposite direction. 7. The roller is mounted on the door opposite the door mounting means, and the latch member is mounted on the support structure on one side of the window opposite the door mounting means. The door assembly according to item 4. 8. The latching means further comprises an elastomeric stop attached to the latching member and positioned to engage the supporting structure when the latching member moves toward the supporting structure. 8. The door assembly of claim 7, comprising a member. 9. The roller is mounted on the door on a side opposite the door mounting means, and the latch member is mounted on the support structure on one side of the window opposite the door mounting means. 7. The door assembly of claim 6, wherein: 10. The latch means further includes an elastomeric stop member attached to the latch member and positioned to engage the support structure upon movement of the latch member in the second direction. 10. The door assembly of claim 9, comprising: 11. A door assembly comprising: a support structure with a window; a door; a support structure on the support structure for pivoting movement of the door about a first axis between an open position and a closed position of the door; means for mounting the door on one side of the window; a first spring biasing the door in a first direction to the open position of the door; a second spring parallel to the first axis; a shock absorbing roller mounted on the door opposite the mounting means for rotational movement about an axis; a latch member mounted on a second side of the window opposite the first side on the support structure for pivoting movement of the latch member, the latch member comprising: pivoting against the first spring in a second direction opposite to the first direction of pivoting toward the closed position, the shock absorbing roller is engaged by rotational contact and is rotated in the first direction. (2) a contact surface that causes the locking member to pivot in a second direction opposite to the first direction in which the locking member pivots when the shock absorbing roller arrives; a detent at the distal end of the contact surface for biasing the latching member so that the latching member pivots against the shock absorbing roller; pivoting the latch member in a second direction into the detent within the latch member;
a second spring for fixing the shock-absorbing roller with a latch; the latch member is rotated in a first direction in which the latch member rotates; and the shock-absorbing roller and the latch member are rotated; means for disengaging the shock absorbing roller from the detent to allow the door to pivot to the open position; and means attached to the latch member for pivoting the latch member; an elastomeric stop member configured to engage the support structure upon movement of the latch member in a second direction. 12. The door assembly of claim 11, wherein the contact surface is sloped to pivot the latch member in the first direction of pivoting of the latch member. 13. An infant incubator door assembly comprising: an incubator canopy with a window; a door for movement of the door between an open position and a closed position of the incubator; means for mounting on the canopy; means for moving the door to the open position of the door; and means for closing the door and securing the door in the closed position.
a latching member between the door and the canopy of the incubator, comprising: (a) a shock absorbing member; (b) (i) upon contact with the shock absorbing member when the door moves to the closed position; an engaging contact surface; and (ii) receiving the shock absorbing member when the door moves to the closed position and reaching the shock absorbing member to secure the shock absorbing member to the detent; a latch member comprising: a detent at the distal end of the contact surface for securing the door in the closed position; (c) means for biasing the shock absorbing member and the latch member into engagement; and (d) means for separating the shock absorbing member and the latch member to disengage the shock absorbing member from the detent and allow the door to move to the open position. A door assembly for an infant incubator, comprising: a latch member having: 14. The door is installed to rotate around a first axis, and the shock absorbing member is a roller installed to rotate around a second axis parallel to the first axis. 14. The door assembly of claim 13, wherein the contact surface engages in rotational contact with the roller when the door is pivoted to the closed position. 15. The door assembly of claim 14, wherein the roller is made of elastomer material. 16. An infant incubator door assembly comprising an incubator canopy, the canopy comprising: a door; the door pivoting about a first axis between an open position and a closed position of the door; means for movably mounting the door on the canopy of the incubator to one side of the window; a first spring biasing the door to pivot the door in a first direction to the open position; a shock absorbing roller mounted on the door opposite the mounting means such that the shock absorbing roller has rotational movement about a second axis parallel to the first axis; a latch member disposed on the canopy of the incubator on one side opposite the window such that the latch member pivots about a third axis parallel to the second axis; (1) When the door pivots against the first spring in a second direction opposite to the first direction in which the door pivots toward the closed position of the door, the latch member (2) a contact surface engaged by rotational contact of the shock absorbing roller such that the shock absorbing roller pivots in one direction; and (2) the first direction in which the latch member pivots when the shock absorbing roller reaches it. a detent at the distal end of the contact surface for allowing the latch member to pivot in an opposite second direction; biasing the latch member to pivot the latch member in the second direction of pivoting the latch member against the shock absorbing roller to secure the detent in the member; a second spring that rotates the latch member in the first direction in which the latch member rotates, separates the shock absorbing roller and the latch member, and rotates the shock absorbing roller in the first direction; means for disengaging from the detent and allowing the door to pivot to the open position; and means attached to the latch member for pivoting the latch member in the second direction; An infant incubator door assembly comprising an elastomeric stop member positioned to engage a canopy of the incubator upon movement of the infant incubator. 17. The door assembly of claim 16, wherein the contact surface is sloped to cause the latch member to pivot in the first direction of pivoting of the latch member.