MXPA02004572A - Door latch. - Google Patents

Abstract

A latch door operator if provided for use with an electrical door operator for improving the sealing capabilities of a plug door commonly used in multi-passenger mass transit vehicles. The essential components of the latch door operator comprise a striker member suspended within the door frame which cooperates with a catcher member which is pivotally mounted to the door. The striker member is capable of moving in one of a first and second direction upon the application of a force thereto. An actuating device is provided for applying one of an actuating and retracting force to the striker member. The striker member also includes a nose portion located at a first end thereof. The catcher member, which is mounted to the door, has a first end portion which is capable of cooperating with the nose portion of the striker member upon the application of an actuating force to the striker member. This actuating force causes the striker member to move in a first direction to compress the sealing member associated with the door to one of a wall portion or door frame of the transport vehicle and to latch the door in a closed position.

Description

DOOR WITH INSURANCE Field of the Invention The present invention relates generally to a door operator with latch for use with electrically operated rotary door operators for mass passenger transport vehicles, more particularly, to a door operator with latch to improve the sealing capacity of a revolving mounted door, such as those used with multiple passenger vehicles, including airport service transports, school buses, and small transportation buses.

BACKGROUND OF THE INVENTION Several types of bus door closure systems of simple types are known. Examples of these known systems are described in U.S. Patent Nos. 4,282,686; 4,924,625; 4,932,715; 5,263,280; and 5,421,395, the specifications of which are incorporated herein by reference. The doorposts of mass transit vehicles are often subjected to significant forces caused by lateral airflow. Such forces can result in undesirable wear of the door gaskets, air seepage through the doors and / or undesirable opening of the door during vehicle movement. There is a need in the art for insurance apparatus, with the ability to solve these inherent deficiencies of the prior art.

Summary of the Invention The present invention relates to a door operator with a lock for use with an electric door operator to improve the sealing capabilities of a plug door generally used in mass transit vehicles. Sealing means are provided at one or both of the ends of the door and / or in or within the door structure / portion of the vehicle wall. The essential components of the secure door operator comprise a hooked element suspended within the door structure, which cooperates with a fastener element which is mounted to the door in a pivot manner. The engaging element has the ability to move in one of a first and second directions at the time of the application of a force thereto. Actuating elements are provided to apply one of a driving or retracting force to the engaging element. The engaging element also includes a nose portion located at a first end thereof. The fastener element, which is mounted to the door, has a first end portion which has the ability to cooperate with the nose portion of the engaging element at the time of application of a driving force to the engaging element. This driving force causes the engaging element to move in a first direction to compress the packaging means associated with the door to one of a wall portion or a door structure of the transport vehicle and to secure the door in a position closed. Therefore, it is an object of the present invention to improve the sealing capability of a rotating mounted door such as that used in multiple passenger vehicles. It is a further object of the present invention to minimize the frictional drag of the engaging element during the movement thereof and to form the ends cooperating with the engaging element and the fastening element made of friction reducing materials. It is still another object to design an insurance operator so that during the actuation of the engaging element, the interruption of the seals is avoided. A further object of the present invention is to design the insurance operator so that a portion of the engaging element fits within the vehicle wall. Another additional object of the present invention is to design an insurance operator so that the ratchet maintains the pressure on the door and compensates for the wear of the gaskets and the operating tolerances. In addition to the aforementioned objects and advantages, those skilled in the art will readily appreciate various other objects and advantages of the secure door operator described herein, from reading the section of the detailed description of this document.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a top view of the safe door operator of the present invention.

Figure 2 shows an alternative view of the safe door operator of Figure 1 from the perspective taken along the line I-I.

Detailed Description of the Invention The following background information is provided to assist the reader in understanding the environment in which the present invention will generally be used. The terms used herein are not intended to be limited to any particular narrow interpretation, unless specifically stated otherwise in this document. Reference is made to Figures 1-2 which illustrate the insurance door operator of the present invention, indicated generally with the number 10, which can be used in conjunction with an electric door operator for a multiple passenger vle, such as a bus. The door operator with latch 10 supports the door panel 12, when in a closed position, against vacuum or suction forces, caused by the lateral air flow. The seal members 14 are provided in one or both of the ends of the door panel 12 and / or in or within the door structure / portion of the wall 16 of the vle. The sealing members generally comprise a rubber packing material, and however, any well-known material for sealing the doors of the vle can be used. The essential components of the secure door operator comprise an engaging element, generally indicated 18, suspended within the structure of the door 16 which cooperates with a fastener element, generally indicated with. the number 20. The fastening element 20 is pivotally mounted to the door by means of a pivot 22. The engaging element 18 is suspended on two oscillators 24, 26 and supported by means to minimize frictional drag such as rollers 28. , slides 30 and / or a combination of rollers 28 and slides 30. A nose portion 32 is located at a first end of the engaging element. This nose portion 32 is inclined at a predetermined angle with respect to the plane of the engaging element 18 to improve the sealing capacity of said door. The nose portion 32 is also formed of any known friction reducing material.

The fastener element 20 comprises a lever arm, which has a first portion of the end 34 which has the ability to cooperate with the nose portion 32 of the engaging element 18 at the time of application of a driving force to the engaging element 18. This driving force causes the engaging element 18 to move in a first direction to compress the seal members 14 associated with the door 12 against one of a portion of the wall, or the structure 16 of the transport vle, and to secure the door 12 in a closed position. The engaging element 18 has an "S" shape that includes a central portion 36, and an end portion 38. The end portion of the engaging element can be engaged with the actuation means 40. The actuation means can also be any well-known actuating means, such as a pulling cable, a pneumatic cylinder, or an electric solenoid. The "S" shape of the engaging element 18 allows at least a portion of the end thereof to be contained within a wall 42 of the transport vle. This characteristic "S" shape also allows the hitter to provide its action without interrupting the seals 14.

The sliding box 44 can be placed on at least a portion of the central portion 36 of the engaging element 18. The sliding box 44 can be formed of any well-known material such as plastic, metal or a composite material. The first end 34 of the fastener element 20 includes friction reducing means. These friction reducing means 35 can be, either a roller suspended from the end of the arm of the lever, a 90 ° slider formed of a friction reducing material and the like. The second end 46 of the fastener element 20 is secured to the door panel 12 of the vehicle. The second end 46 of the fastener element 20 includes tilt elements, such as a spring 48 for tilting the fastener element 20 against the nose portion 32 of the catch, when securing the door in the closed position. This spring 48 has a predetermined tension which has the ability to maintain the pressure of the door 12 in the closed position to compensate for the wear of the packing members 14 and to compensate for the operating tolerances of the closure system, such as the elasticity of the packages, and the particular structure of the vehicle. The door operator with latch also includes a return spring 52 for returning the engaging element 18 to its original or "open" position when releasing the actuating means 40 and allowing the opening of the door 12. A joint mechanism , generally indicated as 50, is associated with the engaging element. This articulation mechanism allows a high-impact movement of the striking element 18 immediately before the engagement of the striking element 18 with the fastening element. The movement of the articulation mechanism is limited to a predetermined distance in order to prevent the joint from jumping through the neutral point to ensure the possibilities of emergency opening. Therefore, the door can be opened even if the return spring 52 of the engaging element 18 will become damaged. The invention has been described in such complete, clear, concise and accurate terms as to make it possible for any person skilled in the art to which the invention pertains to make and use it. It should be understood that variations, modifications, equivalents and substitutions of the components can be made to the modalities specifically described for the invention, by those skilled in the art without departing from the spirit and scope of the invention as established by the invention. the attached claims. Those skilled in the art will also recognize that the foregoing description is illustrative only and is not intended to limit any of the claims to any particular narrow interpretation.

Claims (15)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and therefore, property is claimed as contained in the following: CLAIMS 1.- A door operator with insurance to improve the sealing capacity of a door mounted on rotating manner in a door structure of a multiple passenger mass transport vehicle, the door having seal means associated therewith, and comprising the operator of the door with latch: (a) an engaging element suspended within the structure of the door. the door, the engaging element having the ability to move in one of a first and second directions at the time of the application of a force thereto; (b) a driving means for applying one of a driving or retracting force to the engaged member; (c) a nose portion located at a first end of the engaging element; and (d) a fastener element pivotally mounted to said door, the fastener element having a first end portion which has the ability to cooperate with the nose portion of the engaging element at the time of application of a driving force to the engaging element causing the engaging element to move in a first direction to compress the seal means associated with the door against one of a wall portion or said structure of the transport vehicle and to secure the door in a closed position.
2. 2. A door operator with latch according to claim 1, wherein the nose portion of the engaging element is inclined at a predetermined angle with respect to the plane of the engaging element to improve the sealing capacity of said door.
3. 3. - A door operator with latch according to claim 2, wherein the nose portion of the engaging element is formed of a friction reducing material.
4. 4. A door operator with latch according to claim 1, wherein the engaging element is supported by one of the rollers, slides, and a combination of rollers and slides to minimize drag friction.
5. 5. - A door operator with latch according to claim 1, wherein the engaging element has an "S" shape that includes a central portion and an end portion, the end portion of the engaging element being engageable with the engaging means. drive.
6. 6. - A door operator with lock according to claim 5, wherein the "S" shape of the hook element allows at least a portion of the end thereof to be contained within a wall of the transport vehicle.
7. 7. - A door operator with latch according to claim 5, further comprising a sliding box positioned on at least a portion of the central portion of the engaging element.
8. 8. - A door operator with lock according to claim 1, wherein the first end of the fastener element includes friction reduction means.
9. 9. - A door operator with latch according to claim 8, wherein the friction reduction means includes one of a roller and a 90 ° slide.
10. 10. - A door operator with lock according to claim 1, wherein the fastener element includes a second end secured to the door.
11. 11. - A door operator with latch according to claim 10, wherein the second end of the fastener includes inclining gear to tilt the fastener element against the nose portion of the latch when securing the door in the closed position .
12. 12. - A door operator with lock according to claim 11, wherein the tilt means comprises a spring having a predetermined tension which has the ability to maintain the pressure on the door in the closed position to compensate the wear of seal means and operating tolerances.
13. 13. - A door operator with latch according to claim 1, which further includes articulation mechanisms associated with the engaging element that allow a high striking movement of the engaging element prior to engagement of the engaging element with the fastener element.
14. 14. - A door operator with lock according to claim 13, wherein the articulation movement is limited to a predetermined distance to ensure an emergency opening.
15. 15. - A door operator with latch according to claim 1, which further includes a return spring for the engaging element to retract the engaging element and open the door. SUMMARY A secure door operator is provided for use with an electric door operator to improve the sealing capabilities of a plug door generally used in mass transit vehicles. The essential components of the secure door operator comprise a hooked member suspended within the door structure which cooperates with a fastener element, which is pivotally mounted to the door. The engaging element has the ability to move in one of a first and second directions at the time of the application of a force thereto. An actuating apparatus is provided for applying one of a driving and retracting force to the engaging element. The engaging element also includes a nose portion located at a first end thereof. The fastener element, which is mounted to the door, has a first end portion which has the ability to cooperate with the nose portion of the engaging element at the time of application of a driving force to the engaging element. This driving force causes the engaging element to move from a first position to compress the seal member associated with the door to one of a wall portion, or door structure of the transport vehicle and to secure the door in the door. a closed position.