KR20000048856A - Dual motion, quick release latch mechanism - Google Patents

Abstract

PURPOSE: A latch mechanism, such as may be found in a door is provided which is actuated either by pushing or pulling or turning a handle or a knob. CONSTITUTION: A latch mechanism which includes exterior and interior handle assemblies connected by a bar with a cammed surface such that the latch mechanism can be actuated by pushing, pulling, or turning a handle. Pushing or turning the exterior handle causes the bar to contact a cam follower on a receiver whose edge will rotate a lever to retract a bolt. Also, pulling or turning the interior handle produces the same result. Once the bolt is retracted, and the handle is released, a spring biases the bolt back to the extended position.

Description

Dual action quick release latch mechanism {DUAL MOTION, QUICK RELEASE LATCH MECHANISM}

Most door latch mechanisms are operated by rotating a knob or handle. As described in US Pat. No. 5,516,163, this type of door latch mechanism poses a problem for the user. U. S. Patent No. 5,516, 163 is directed to improving a baker latch mechanism that can be easily operated by pushing or pulling a handle or knob. In a state of fear, they work well. However, in an unfeared state, people are tamed to rotate a handle or knob when opening a door. The U. S. Patent No. 5,516, 163 is not operated by rotation and thus impedes the reception of guests. As described below, the present invention seeks to improve the single-moving quick release latch mechanism of U.S. Patent No. 5,516,163.

The invention is published by John R. May 14, 1996. Regarding the improvement of US Pat. No. 5,516,163 to Baker and entitled "Single Operation Quick Release Latch Mechanism", it can be used as door latch mechanism operated by pushing and pulling handle or knob or rotating operation as in the prior art. To a latch mechanism. Preferred embodiments of the invention include a locking mechanism.

1 shows the invention comprising a locking mechanism;

2 is an enlarged view of the present invention with a locking mechanism.

3 is an enlarged view of the inner handle and the locking ring.

4 is an enlarged view of several components used in the present invention.

5 is an enlarged view of a bar used in the present invention.

FIG. 5A is a top view of the bar shown in FIG. 5; FIG.

6 shows the invention without a locking mechanism;

7 is an enlarged view of the present invention without a locking mechanism.

8 shows the invention with the bolt retracted by the linear movement of the handle.

9 shows the invention with bolts retracted by the rotational movement of the handle.

10 shows an unlocking means of the invention.

The present invention relates to a latch mechanism commonly found in doors operated by pushing or pulling a handle or knob. Preferred embodiments of the invention include a locking mechanism.

1 to 5A, the latch mechanism of the present invention includes a receiver 2, a barrel housing rivet 3, a spring 4, a barrel housing 5, a barrel housing end plate 6, Bolt 7, inner lever 8, inner stop plate 9, bar 10, stop pin 11, rotating cam follower 12, outer handle inner plate 13 And the lock plate 14, the lock knob 15, the outer handle outer plate 16, the inner handle inner plate 17, the inner handle outer plate 18, the screw 19, the outside The handle 20, the pin 21, the inner handle 30, and the locking ring 31 are included.

The barrel housing 4 comprises two in-line barrel housing openings 5A, two aligned barrel housings 5B with inner spiral stud clearances, a barrel housing flange 5C, and a barrel Housing bracket 5D and two aligned barrel housing rivet openings 5E.

2 and 4, the receiver 2 includes two receiver openings 2A, a receiver slot 2B, a receiver gap 2C, a receiver edge 2D, two lugs 2E, And a projection 2F and a stop 2G.

The rotary cam follower 12 includes a stop pin opening 12A. The rotating cam follower 12 is supported by the receiver 2 by a stop pin 11 through a stop pin opening 12A and a receiver opening 2A. The stop pin 11 is fixed or screwed in place, but the cam follower 12 is positioned around the stop pin 11 because it is required to fix the rotating cam follower 12 to the receiver 2. Can be rotated freely.

The bolt 7 comprises a bolt lever slot 7A and a bolt recess 7B. The end of the spring 4 is embedded in the bolt recess 7B, and the other end of the spring 4 is bonded to the receiver 2. The projection 2F prevents the spring 4 from slipping from the receiver 2.

The inner lever 8 rotates around the barrel housing rivet 3 inserted through the opening 8A of the inner lever 8. As shown in FIG. 4, the ear portion 8B of the inner lever 8 is in contact with the receiver edge 2D. If the barrel housing 5 is plastic, the inner stop plate 9 including the inner stop plate barrel housing rivet opening 9A is made of steel, and the inner stop plate stud gap 9B opens the barrel housing 5. Used to reinforce. If the barrel housing 5 is made of steel, the inner stop plate 9 is not necessary. The barrel housing rivet 3 has heads at both ends. The barrel housing rivet 3, which is typically made of steel, may be a headed rivet with a head at the other end after assembly, or may start with a pin with a head in place, or the head holds a thin material without distortion. It can also be formed by an orbital rotatable head that allows the heading of the pins to the rivets during operation. The fixed assembly of the barrel housing 5 to the internal parts is functionally required.

The bar 10 has a sloping bar tang guide 10A, a bar tang opening 10B, a saddle 10C, a bar opening 10D, a bar flat 10E, a bar radius 10F and And a bar cam surface 10G and a bar assembly cam radius 10H.

In the assembly of the present invention, the rotary cam follower 12 is fixed to the receiver 2 by the above-mentioned stop pin 11. The receiver 2 with the rotary cam follower 12 is connected to the barrel housing rivet 3 through the aligned barrel housing rivet opening 5E and the inner stop plate barrel housing rivet opening 9A and the inner lever opening 8A. By the barrel housing. As mentioned above, if the barrel housing 5 is plastic, the inner stop pin 9 needs to reinforce the barrel housing 5. The preferred material for the internal stop pin 9 is stainless steel, which is excellent in strength and corrosiveness.

The inner lever 8 includes an ear portion 8B that contacts the receiver edge 2D. The inner lever 8 rides up the inside of the bolt lever slot 7A of the bolt 7. The spring 4 is supported between the bolt 7 and the receiver 2 in the bolt recess 7B. Bar 10 is inserted through alignment barrel housing opening 5A of barrel housing 5. Bar flat 10E and bar radius 10F pass through rotating cam follower 12 including a spring 4 for pressing receiver 2 with cam follower 12 to bar 10. The purpose is to facilitate the insertion of the bar 10. The purpose of the bar assembly cam radius 10H is to act as a ramp, so that the cam follower 12 is adapted to counter the sudden transition of the cam follower 12 from the bar flat 10E to the saddle 10C. Settles into position in 10C). Bar assembly cam radius 10H allows bar 10 to be separated from barrel housing 5.

The bar cam surface 10G contacts the cam follower 12, so the bar cam surface 10G exerts a force on the cam follower 12. Since the bar 10 is linearly moved into the barrel housing 5, the bar cam surface 10G converts the cam follower 12 and then converts the receiver 2 relative to the spring 4 to force the spring 4. Pressurize. The receiver edge 2D presses the ear 8B of the inner lever 8 in such a manner that the inner lever 8 rotates around the barrel housing rivet 3. Since the inner lever 8 rotates around the barrel housing rivet 3, the inner lever 8 which rides up the bolt lever slot 7A pulls the bolt 7 into the barrel housing 5 and the spring 4. Pressurize. When the present invention is installed in the door, the bolt 7 is pulled into the barrel housing 5, the door is opened, the bar 10 is no longer pressurized into the barrel housing 5 in a linear motion, and the spring ( 4) continues to press the receiver 2 with the cam follower 142 against the bar cam surface 10G which linearly moves the bar 10 until the cam follower 12 rests on the saddle 10C. do. The bolt 7 is returned to the extended position in which the inner lever 8 is seated on the stop 2G.

Prior to inserting the bar 10 into the barrel housing 5, the barrel housing end plate 6 is typically secured to the door by screws, as shown in FIGS. 1 and 2, 6-9. The barrel housing 5 with internal parts is inserted through the opening 6A of the barrel housing end plate 6 until the barrel housing flange 5C is in contact with the barrel housing end plate 6. Alternatively, this is all done before fixing the barrel housing end plate 6 to the door. The barrel housing end plate 6 may be made of an integral part of the barrel housing 5. The barrel housing end plate 6 is an optional part in which the latch mechanism functions without this part. This is used to increase stability in the latch mechanism. It is also used as a spacer for filling gaps in the door edge for molding purposes and for retrofitting to increase the stability of the latch mechanism.

The bar 10 is inserted into the outer handle 20 through the bar gap 20A until the bar opening 10D is aligned with the pin gap 20B at the outer handle 10. The pin 21 is inserted into the pin gap 20B through the bar opening 10D which fixes the outer handle 20 to the bar 10. The pin 21 may be a driven interference insert, or may be a roll pin, the pin 21 may be fixed in place with an adhesive, and the pin 21 may be replaced by a spiral fastener or an outer handle 20 ( It may be any other typical means of fixing to 10).

With respect to the door opened inward, the user opens the door inward by pressing the outer handle 20 or pulling the inner handle 30.

For the door that is opened outward, the outer handle 20 is mounted on the inner side of the door and the inner handle 30 is mounted on the outer side of the door. The user then opens the door outward by pulling the outer handle 30 or pushing the outer handle 20.

The purpose of the two-step processing as described above is to indicate that the user can pull or push the handle or knob in the direction in which the door is opened since the "dual motion quick release latch mechanism" can be mounted on the door.

As shown in FIG. 3, the inner handle 30 includes a bar gap 30D that allows the inner handle 30 to be included in the bar 10. The inner handle 30 is fixed to the bar 10 by a locking ring 31 having a locking ring tang 31A. The locking ring 31 is inserted around the outer handle locking ring gap 30A, and the locking ring tang 31A passes through the inner handle gap 30B and is seated in the bar tang opening 10B. In general, the locking ring 31 is assembled to the inner handle 30 in the inner handle locking ring gap 30A, and the bar 10 is inserted into the bar gap 30D.

As shown in FIG. 5, the bar tang guide 10A is inclined such that the bar 10 is inserted into the inner handle 30 so that the locking ring tang 31A can be engaged with the bar tang opening 10B.

As shown in FIGS. 3 and 5 and 10, the part 40 having the end 40A is used to separate the locking ring tang 31A and the bar tang opening 10B and the inner handle opening 30B. Bar 10 may be removed from inner handle 30.

As shown in Fig. 8, when the present invention is installed in the door, the user can open the door by pushing the outer handle or pulling the inner handle 30, and the bar cam surface 10G is a rotating cam follower ( 12) is towed to operate the latch mechanism.

1 and 6, in the preferred seating position of the present invention, the rotary cam follower 12 is in the saddle 10C of the bar 10.

As shown in FIG. 9, when the bar 10 rotates, the effect on the receiver 2 is the same even when the bar cam surface 10G is pushed or pulled into the rotary cam follower 12. Unlike pushing or pulling, when the bar 10 rotates, the saddle 10C, which is part of the bar 10, also rotates. As the saddle 10C rotates, the edge of the saddle 10C contacts one of the lugs 2E of the receiver 2 and forces the receiver 2 towards the spring 4. The receiver edge 2D presses and rotates the ear portion 8B of the inner lever 8, and the bolt 7 is pulled into the barrel housing 5 by the lever 8 rising into the bolt lever slot. In this case, if the effort to open the door cannot return to the blister and press on the outer handle 20 opening the door away from the user or on the inner handle 30 opening the door towards the user, The result is the same. Accordingly, the present invention seeks to improve the single motion quick release latch mechanism of US Pat. No. 5,516,163 as described above.

When the latch mechanism is installed in the door, the door is opened and closed and the handle is released, the latch mechanism returns to the rest position so that the spring biases the bolt 7 to its extended position.

The outer handle outer plate 16 includes an outer handle outer plate opening 16A and a lock release opening 16B.

1, 6, and 8, the inner handle 30 and the outer handle 20 of the latch mechanism can rotate freely as if they are linearly moved.

The outer handle inner plate 13 includes two inner spiral studs 13A. In a preferred embodiment of the present invention, one of the inner spiral studs 13A passes through the aligned barrel housing inner spiral stud clearance 5B, and the other inner spiral studs 13A penetrate the barrel housing bracket 5D. The barrel housing 5 is fixed at the stop position. The screw 19 fixes the inner handle inner plate 17 and the inner handle outer plate 18 in place. The inner handle 30 penetrates the gap 18A of the inner handle outer plate 18 and the inner plate gap 17D of the inner handle inner plate 17.

Door knob latching mechanisms can be classified as either concealed or through. The concealed type includes a lock that can be used in a bedroom or bathroom that can be operated from the interior into the room. Pass-types that do not include locks are typically used for toilet doors.

The present invention uses an optional concealed lock.

As shown in FIG. 2, the inner handle inner plate 17 includes two lock plate guides 17A, a screw opening 17B, a lock knob opening 17C, and an inner handle inner plate gap 17D. Include.

The lock plate 14 includes a lock tang 14A, a lock separating tab 14B, and a lock plate opening 14C. The lock knob 15 may be inserted into the lock plate opening 14C and screwed into the lock plate 14 or in a suitable manner, such as by heading the lock knob 15 to be secured to the lock plate 14. It may be secured to the lock plate 14 in other ways known to those skilled in the art.

In FIG. 1, the lock plate 14 is supported in the lock plate guard 17A in such a manner that the lock plate 14 slides with respect to the inner handle inner plate 17. The lock tang 14A is engaged with the inner handle lock opening 30C to form a concealed lock by preventing the bar 10 from being pressed or pulled and rotated. In a preferred embodiment of the present invention, the lock tang 14A takes the form of a keystone, and the inner handle lock opening 30C is safer than when the side of the locking tang 14A and the inner handle lock opening 30C are parallel. A corresponding slope side to form a concealed lock. The purpose of the lock release tab 14B is an internal handle lock opening 30C that allows the bar 10 to move freely by using the component 40 when the component end 40A is inserted through the lock release opening 16B. ) And the lock plate 14 separating the lock tang 14A.

In a preferred embodiment of the present invention, the part is typically made of steel or brass, with the exception of some parts such as barrel housing 5, and bar 10 may be nylon or similar plastic.

As shown in FIG. 8, when the bar cam surface 10G is pressed against the rotary cam follower 12, the cam follower 12 and the receiver 2 are moved toward the inner lever 8. Due to the linear movement, the receiver 2 is pressed against the barrel housing 5. If the barrel housing 5 is plastic, then the inner stop plate 9 is required to ensure a long life and a latch mechanism free from failure. The preferred material for the inner stop plate 9 is stainless steel.

8 shows the outer handle 20 moved towards the outer handle outer plate 16 in contact with the outer surface of the door. When the outer handle 20 is moved in this manner, as shown in FIG. 8, the bar 10 is moved so that the bar cam surface 10G is fixed to the receiver 2 rotatable around the stop pin 11. In contact with the rotary cam follower 12 (see FIG. 5A), the receiver 2 is moved which rotates the inner lever 8 and then retracts the bolt 7 into the barrel housing 5. Rotational movement of the rotary cam follower 12 minimizes friction and wear on the bar cam surface 10G. Minimization of friction extends the life of the present invention by reducing the internal forces involved in the operation of the latch mechanism.

FIG. 9 shows that the rotation of the handle produces the same results as shown in FIG. 8 when the handle is operated linearly.

Preferred embodiments of the present invention include bolts 7 extending into the prior art striking plate with a striking plate tang having a fine angle to give easy linear motion. The prior art striking plate is described in US Pat. No. 5,516,163.

The saddle 10C and bar cam surface 10G cooperating with the rotary cam follower 12 seat the bar in its central position in the barrel housing 5. As the door handle plate does not inhibit the linear movement or rotation of the handle, the length of a given bar 10 can be used in a range of different door thicknesses.

In the preferred embodiment shown, it minimizes internal friction and wear, minimizing effort required for operation, increasing the durability of the instrument, proper lubrication including dry thin film lubrication and iron or tin phosphate coatings, Teflon coatings, and those skilled in the art. Other means as can be appreciated may be used on various contact points within the dual action quick release latch mechanism.

Although the foregoing description contains various features, these are merely illustrative of the preferred embodiments of the present invention and should not be construed to limit the scope of the present invention. For example, a non-rotating cam follower can be replaced with a rotating cam follower that is easy to move and resists wear. In addition, although the invention has been described primarily for use in doors, it can be used in places where gates or drawers and fences or dual actuation quick release latch mechanisms with less actuation force are required.

The present invention has been described with reference to the preferred embodiments, and is not limited thereto, and one of ordinary skill in the art should recognize that various modifications and changes can be made to the present invention without departing from the appended claims.

Claims (10)

A latch mechanism mounted on a recess of a door having an inner and outer surface cooperating with a striking plate in an extended position mounted in a recess of a frame, the latch mechanism having a bolt moving between the extended position and the retracted position, An external handle mounted to the outside of the door, An internal handle mounted on the inner surface of the door, A bar having a cam surface extending through the recess of the door and attached to the inner and outer handles, A receiver operated by a bar having a cam surface and having a cam follower, A lever having an ear portion mounted inside the barrel housing by rivets, A spring embedded in the barrel housing between the bolt and the receiver, An outer plate with an inner helical stud secured to the inner plate by screws through the barrel housing opening and the bracket, When the outer or inner handle is moved linearly, the bar cam surface is in contact with the receiver's cam follower by moving the bar. When the outer or inner handle is rotated, the bar is rotated to contact the receiver lug by rotating the bar. The barrel housing guides the receiver and the bolt, and the edge on the receiver contacts the ear of the lever to rotate the lever around the rivet in the bolt lever slot to retract the bolt from the striking plate into the barrel housing. A latch mechanism characterized by the above. The latch mechanism according to claim 1, further comprising a barrel housing end plate with mounting screws. 2. The latch mechanism of claim 1 wherein the cam follower is a rotating cam follower that freely rotates to reduce friction and wear. 2. The latch mechanism of claim 1 further comprising a sliding lock plate having a locking tang engageable with the opening in the inner handle providing a means for locking the latch mechanism. A latch mechanism, which can be operated by pressurization, traction and rotation respectively. 6. The latch mechanism of claim 5 wherein said actuation means comprises a bar having a cam-like surface operating on a cam follower. 6. The latch mechanism of claim 5 wherein the actuating means includes a bar having a cam-like surface that acts on a cam follower of the receiver whose edge rotates the lever to retract the bolt. 7. The actuating means of claim 6, wherein the actuating means includes a bar having a cam-like surface that acts on a cam follower of a receiver whose edge rotates the lever to retract the bolt, and the latch mechanism returns the bolt to the extended position. A latch mechanism comprising a spring. 7. The latch mechanism of claim 6 wherein the bar is a handle. 2. The latch mechanism of claim 1 further comprising an optional barrel housing end plate with mounting screws.