KR20230127751A - Latch bolt unit and door-lock mortise having the same - Google Patents

Abstract

A latch bolt unit of the present invention is arranged in a case to protrude through a front plate to the outside while moving back and forth. The latch bolt unit of the present invention comprises: a latch bolt protruding to the outside of the case, wherein a roller thereof engages with a groove of a striker disposed in a door frame to prevent a door from being opened; a shaft having a groove formed along the circumference of the front end that is inserted into the latch bolt; a coupling pin penetrating the latch bolt and inserted into the groove of the shaft to couple the latch bolt and the shaft; a support plate fixed to the case to support the shaft so that the shaft can move; and a latch spring disposed to surround the shaft between the latch bolt and the support plate and provide elastic force to the latch bolt in an outward direction. According to the present invention, a door can be opened by unlocking the latch bolt without the need to operate a handle separately.

Description

Latch bolt unit and door lock mortise having the same {Latch bolt unit and door-lock mortise having the same}

The present invention relates to a latch bolt unit and a door lock mortise having the same, and more particularly, to a latch bolt unit provided with a roller that is caught in a groove of a striker provided on a door frame and a door lock mortise having the same.

In general, the door lock mortise includes a latch bolt and a dead bolt.

The latch bolt protrudes and is accommodated in the side of the door by a rotating means such as a lever, and prevents the door from being automatically opened. The dead bolt is locked and unlocked by a knob or a grip, and functions as a locking means of the door.

In the door lock mortise, the dead bolt can be released by pressing a key input button or using a safety key with a built-in semiconductor chip on the outside of the door, and by pressing a button on the inside of the door with the power of the motor. In addition, even if the user forgets to lock the door, the door lock mortise can automatically move the deadbolt to a locked position after the door is closed through the power of the motor.

However, in the conventional door lock mortise, when the door is opened, the dead bolt is unlocked by the operation of the motor, and then the latch bolt is unlocked by operating a handle separately to open the door. As described above, opening the door is cumbersome and takes a long time.

The present invention provides a latch bolt unit and a door lock mortise having the latch bolt unit capable of releasing the fixation by pushing a door using the elastic force of a roller and a latch spring.

In the latch bolt unit provided inside the case according to the present invention and protruding outward through the front plate while moving in the front and rear direction, the latch bolt unit protrudes to the outside of the case, and a roller is provided on the door frame. A latch bolt engaged with the groove of the striker to prevent opening of the door, a shaft having a groove formed along the circumference of the front end portion, and the front end portion being inserted into the latch bolt, and penetrating the latch bolt to the groove of the shaft A coupling pin fitted to couple the latch bolt and the shaft, a support plate fixed to the case and supporting the shaft so that the shaft is movable, and provided to surround the shaft between the latch bolt and the support plate. , A latch spring providing elastic force to the latch bolt in a direction toward the outside may be included.

According to one embodiment of the present invention, the latch bolt unit further includes a guide pin provided to penetrate the rear end of the shaft and having both ends respectively inserted into the guide holes formed in the front and rear directions of the case, A guide pin may guide the forward and backward movement of the latch bolt unit while moving along the guide holes.

According to one embodiment of the present invention, the latch bolt covers the upper and lower surfaces of the roller, and is provided with a fixing frame coupled to the shaft by the coupling pin and vertically provided in the roller so that the roller can rotate. Both ends are fixed to the fixing frame while passing through the hole, and may include a roller shaft coupling the fixing frame and the roller.

According to one embodiment of the present invention, the fixing frame is provided along the front and rear directions, provided along the shaft hole into which the front end of the shaft is inserted, and provided along the vertical direction, the pin hole into which the coupling pin is inserted Including, the shaft hole and the pin hole may partially cross each other.

According to one embodiment of the present invention, the latch bolt protrudes along the circumference of the through hole on the upper and lower surfaces of the roller to minimize the contact area between the roller and the fixing frame, and contacts the fixing frame. It may further include a protrusion.

According to one embodiment of the present invention, the contact protrusion may have a ring shape having a concentric axis with the through hole, and an outer radius of the contact protrusion may be smaller than a radius of the roller.

According to one embodiment of the present invention, the roller may have a cylindrical shape with a constant diameter so that the roller makes linear contact with the groove of the striker in order to suppress abrasion of the roller.

A door lock mortise according to the present invention includes a latch bolt unit provided inside a case and protruded outwardly through a front plate, and a latch bolt unit provided inside the case and protruded outwardly through the front plate. A dead bolt, a motor providing a driving force for reciprocating the dead bolt, and a gear that is caught on a slider connected to the dead bolt and meshed with a pinion of the motor, and rotates reciprocally according to the drive of the motor to move the dead bolt. It includes a dead bolt drive gear that protrudes the bolt to the outside or accommodates it to the inside, and the latch bolt unit protrudes to the outside of the case, and the roller is engaged with the groove of the striker provided on the door frame to prevent the door from opening. A latch bolt, a groove is formed along the circumference of the front end, a shaft into which the front end is inserted into the latch bolt, and a coupling that passes through the latch bolt and is inserted into the groove of the shaft to couple the latch bolt and the shaft. A pin, a support plate fixed to the case and supporting the shaft so that the shaft is movable, and a support plate wrapped around the shaft between the latch bolt and the support plate, and connected to the latch bolt in an outward direction. A latch spring providing an elastic force may be included.

In the present invention, the roller is engaged with the groove of the striker by the elastic force of the latch spring to prevent the door from opening, and the roller can be separated from the groove of the striker as the latch spring contracts when the user pushes the door. there is. Therefore, the door can be opened by releasing the fixation of the latch bolt without the need to separately operate the handle.

In the present invention, since the groove is formed around the entire circumference of the shaft, when inserting the shaft into the shaft hole, the coupling pin can be inserted into the groove without adjusting the insertion direction of the shaft. Therefore, it is possible to easily couple the latch bolt and the shaft.

In the present invention, a contact area between the upper and lower surfaces of the roller and the fixing frame may be minimized by using the contact protrusion. Therefore, the roller can rotate smoothly while contacting the striker.

In the present invention, since the roller has a cylindrical shape with a constant diameter, the roller makes a line contact with the groove of the strike rather than a point contact. Therefore, wear of the roller can be suppressed.

1 is a side view for explaining a door lock mortise according to an embodiment of the present invention.
FIG. 2 is a schematic perspective view for explaining the latch bolt unit shown in FIG. 1 and the striker to which the dead bolt is applied.
3 is a perspective view for explaining the latch bolt unit shown in FIG. 1;
4 is a side view for explaining the latch bolt unit shown in FIG. 3;
5 is a plan view for explaining the latch bolt unit shown in FIG. 3;
6 is an exploded side view for explaining the latch bolt unit shown in FIG. 3;
Figure 7 is a perspective view for explaining the roller shown in Figure 3;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, it should be understood that this is not intended to limit the present invention to the specific disclosed form, and includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a side view for explaining a door lock mortise according to an embodiment of the present invention, FIG. 2 is a schematic perspective view for explaining a latch bolt unit and a dead bolt striker shown in FIG. 1, and FIG. 1 is a perspective view for explaining the latch bolt unit shown in FIG. 4 is a side view for explaining the latch bolt unit shown in FIG. 3, FIG. 5 is a plan view for explaining the latch bolt unit shown in FIG. 3, FIG. 6 is an exploded side view for explaining the latch bolt unit shown in FIG. 3 , and FIG. 7 is a perspective view for explaining the roller shown in FIG. 3 .

1 to 6, the door lock mortise 100 includes a case 110, a latch bolt unit 120, a dead bolt 130, a motor 140, a dead bolt driving gear 150, and a first sensor. 160, a second sensor 170, and a control unit (not shown).

The case 110 protects each component of the door lock mortise 100 and is mounted on a door (not shown).

A key hole into which a user can insert a key to open the door outdoors and a key input unit or card contact unit for releasing the dead bolt 130 may be mounted on the outdoor side of the case 110 .

A button for releasing the dead bolt 130 by a user indoors may be mounted on an indoor side of the case 110 .

The front plate 111 is formed on the front side of the case 110 to face the striker 200 provided on the door frame. The front plate 111 has openings (not shown) through which the latch bolt unit 120 and the dead bolt 130 can move.

The latch bolt unit 120 is provided inside the case 110 and is provided to be movable along the front and rear directions of the case 110 . Accordingly, the latch bolt unit 120 may protrude out of the case 110 through the front plate 111 . The latch bolt unit 120 may protrude out of the case 110 and be coupled with the groove 210 of the striker 200 . Therefore, the latch bolt unit 120 can keep the door closed by preventing the door from opening by itself.

The latch bolt unit 120 includes a latch bolt 121, a shaft 125, a coupling pin 126, a support plate 127, a latch spring 128, a guide pin 129, and a coupling pin 125. can include

The latch bolt 121 protrudes to the outside of the case 110 and may be engaged with the groove 210 of the striker 200 .

The latch bolt 121 may include a roller 122 , a fixing frame 123 and a roller shaft 124 .

The roller 122 is engaged with the groove 210 of the striker 200 to prevent the door from opening. The roller 122 is provided with a through hole 122a along the vertical direction.

The fixing frame 123 is provided to cover the upper and lower surfaces of the roller 122 . The fixing frame 123 is provided with shaft holes 123a into which the roller shaft 124 is inserted. The shaft holes 123a are formed at the front end of the fixing frame 123 in the vertical direction.

The roller shaft 124 passes through the through hole 122a of the roller 122 and both ends are inserted into the shaft holes 123a, respectively. Thus, the roller shaft 124 is fixed to the fixing frame 123 and couples the fixing frame 123 and the roller 122 .

In this case, the diameter of the through hole 122a may be slightly larger than the diameter of the roller shaft 124 . Thus, the roller 122 can smoothly rotate about the roller shaft 124 .

The roller 122 may protrude beyond the front end of the fixing frame 123 . Therefore, when the door in an open state is closed, the roller 122 can be inserted into the groove 210 while making contact with the striker 200 . Also, since the roller 122 protrudes beyond the front end of the fixing frame 123, contact of the fixing frame 123 with the striker 200 can be prevented.

The roller 122 rotates while contacting the striker 200 . When the roller 122 has a cylindrical shape with a convex center portion, only the center portion of the roller 122 contacts the striker 200 . That is, the roller 122 makes point contact with the striker 200 .

When the roller 122 contacts the striker 200, the load is concentrated only on the central portion of the roller 122 that makes point contact with the striker 200, so that the central portion of the roller 122 can easily may wear out.

The roller 122 may have a cylindrical shape with a constant diameter. In this case, the roller 122 may make line contact with the striker 200 . Since the load applied to the roller 122 when in contact with the striker 200 can be dispersed, wear of the roller 122 can be suppressed. Therefore, noise generated when the roller 122 is worn out can be reduced.

The roller 122 may have contact protrusions 122b on upper and lower surfaces, respectively. The contact protrusions 122b may protrude along the circumference of the through hole 122a. The contact protrusions 122b may be placed in close contact with or adjacent to the through hole 122a. For example, the contact protrusion 122b may have a ring shape having a concentric axis with the through hole 122a. In this case, an outer radius of the contact protrusion 122b may be smaller than a radius of the roller 122 .

Since the contact protrusions 122b are provided, the upper and lower surfaces of the roller 122 do not contact the fixing frame 123, but the contact protrusions 122b contact the fixing frame 123. do. Therefore, the contact area between the roller 122 and the fixing frame 123 can be minimized.

When the contact area between the roller 122 and the fixed frame 123 is minimized, friction between the roller 122 and the fixed frame 123 can be reduced. Therefore, noise generated by friction between the roller 122 and the fixing frame 123 can be reduced.

Meanwhile, since the roller shaft 124 is disposed in the vertical direction, the lower surface of the roller 122 may mainly contact the fixing frame 123 due to gravity. Accordingly, the contact protrusions 122b may not be provided on both the upper and lower surfaces of the roller 122 but may be provided only on the lower surface.

In addition, the upper and lower surfaces of the roller 122 may be spaced apart from the fixing frame 123 due to the contact protrusions 122b. Therefore, it is possible to prevent the roller 122 and the fixing frame 123 from interfering with each other.

The fixing frame 123 is provided with a shaft hole 123b for inserting the shaft 125 and a pin hole 123c for inserting the coupling pin 126 . The shaft hole 123b is formed in the longitudinal direction, and the pin hole 123c is formed in the vertical direction. The shaft hole 123b and the pin hole 123c partially cross each other.

The shaft 125 has a groove 125a formed along the circumference of the front end, and the front end is inserted into the shaft hole 123b of the latch bolt 121.

The coupling pin 126 is inserted into the pin hole 123c and passes through the fixing frame 123 . At this time, the coupling pin 126 is inserted into the groove 125a of the shaft 125 to couple the fixing frame 123 and the shaft 125 .

Since the groove 125a is formed around the entire circumference of the shaft 125, when the shaft 125 is inserted into the shaft hole 123b, even if the insertion direction of the shaft 125 is not adjusted, the coupling pin ( 126) may be inserted into the groove 125a. Therefore, the fixing frame 123 and the shaft 125 can be easily coupled.

The support plate 127 is fixed to the case 110 . For example, the support plate 127 is provided with locking protrusions 127a on both left and right sides, and the holding protrusions 127a are fitted into the case 110 .

The support plate 127 supports the shaft 125 so that the shaft 235 is movable in the front-back direction. For example, a through hole (not shown) is provided at the center of the support plate 127, and the shaft 125 is inserted into the through hole so that the support plate 127 supports the shaft 125. can Also, the shaft 125 may be moved in the forward and backward directions through the through hole.

The latch spring 128 is provided between the latch bolt 121 and the support plate 127, and both ends may be supported by the latch bolt 121 and the support plate 127. At this time, the latch spring 128 may surround the shaft 125 . Accordingly, it is possible to prevent the latch spring 128 from being separated from the shaft 125 .

Since the support plate 127 is fixed to the case 110 , the latch spring 128 may provide an elastic force to the latch bolt 121 in an outward direction. Therefore, the latch bolt 121 can maintain a protruding state from the case 110, and can return to the protruded position even when the latch bolt 121 moves in a direction toward the inside of the case 110. there is.

In addition, the latch spring 128 may contract as the latch bolt 121 moves in a direction toward the inside of the case 110 when the user pushes the door. Since the latch bolt 121 moves in the direction toward the inside, the roller 122 can be separated from the groove 210 of the striker 200 .

The guide pin 129 is provided to pass through the rear end of the shaft 125 . Both ends of the guide pin 129 are respectively inserted into the guide holes 112 formed in the forward and backward directions of the case 110 .

The guide pin 129 may guide the movement of the latch bolt 121 in the forward and backward directions while moving along the guide holes 112 . Accordingly, the latch bolt 121 can stably move in the forward and backward directions.

The roller 122 engages with the groove 210 of the striker 200 by the elastic force of the latch spring 125 to prevent the door from opening, and the latch spring 125 While contracting, the roller 122 may be separated from the groove 210 of the striker 200 . Therefore, the door can be opened by releasing the fixation of the latch bolt 121 without the need to separately operate the handle.

The dead bolt 130 is provided inside the case 110 and protrudes outwardly through the front plate 111 . At this time, the dead bolt 130 is provided to be movable along the front-back direction. The dead bolt 130 may be inserted into the opening 220 provided in the striker 200 to lock the door, or may be separated from the opening 220 to unlock the door.

A slider 131 having a locking groove 132 is connected to the rear end of the dead bolt 130 .

The slider 131 is guided by the case 110 when the dead bolt 130 protrudes to the outside of the case 110 or reciprocates along the front-back direction to be received inside the case 110. can

The motor 140 is provided inside the case 110 and provides a driving force for reciprocating the dead bolt 130 . The motor 130 is provided with a pinion 131 and is rotated by the motor 130 .

The dead bolt driving gear 150 is caught on the slider 131 and has a gear 151 engaged with the pinion 141 of the motor 140 .

The dead bolt driving gear 150 has a substantially cylindrical shape, and the gear 151 is provided at a part of the upper circumference. As the motor 140 is driven, the dead bolt driving gear 150 may rotate reciprocally.

A control lever 152 is provided on the side surface of the dead bolt driving gear 150, and the control lever 152 is caught in the locking groove 132 of the slider 131. As the dead bolt drive gear 150 reciprocates, the control lever 152 rotates and the slider 131 reciprocates in the forward and backward directions. As the slider 131 reciprocates in the forward and backward directions, the dead bolt 130 connected to the slider 131 may protrude outward or be accommodated into the inside.

The dead bolt driving gear 150 may have a key groove 153 into which an emergency key is inserted. When the emergency key is inserted into the keyway 153 and rotated counterclockwise while the door is locked, the dead bolt driving gear 150 rotates counterclockwise and moves the dead bolt 130 backward to enter the interior accepted as Therefore, the door can be opened using the emergency key.

A dead bolt spring 154 is provided between the control lever 152 and the case 110 . The dead bolt spring 154 may be a torsion spring.

When the control lever 152 starts to rotate, the dead bolt spring 154 adds rotational force to the control lever 152 . Accordingly, the control lever 152 can force the dead bolt 130 to retreat.

The door lock mortise 100 may further include first sensors 160 and second sensors 170 .

The first sensors 260 are provided so that a pair of first sensors 260 are spaced apart from each other along the movement path of the dead bolt 130 in the case 110 . The first sensors 260 detect the protrusion 133 provided on one side of the slider 131 . The first sensors 260 may be disposed on a side surface or a lower portion of the protruding part 133 . Examples of the first sensors 260 include optical sensors and proximity sensors.

When the first sensors 260 detect the protrusion 133 , the position of the dead bolt 130 connected to the slider 131 may be checked. For example, it is possible to determine whether the dead bolt 130 is in a protrusion state or an accommodation state by using the first sensors 260 . Also, when the dead bolt 130 does not fully move forward because the door is not completely closed, the first sensors 260 may detect a locking defect of the dead bolt 130 .

The second sensor 170 is provided adjacent to the front plate 111 in the case 110 and detects the opening and closing of the door. Examples of the second sensor 170 include magnet sensors, and detect the magnetic force of the magnet provided on the door frame.

Specifically, when the door is closed, the second sensor 170 detects the closing of the door as the internal switch is turned on (0N) by the magnetic force of the magnet of the door frame. When the door is opened, the second sensor 170 moves away from the magnet of the door frame and the internal switch turns off to detect the opening of the door.

The controller is provided inside the case 110 and may be connected to the key input unit, the card contact unit, or the button. An example of the controller may include a printed circuit board.

The controller controls the operation of the motor 140 according to a user's input through the key input unit, the card contact unit, or the button. Accordingly, the door may be opened by accommodating the dead bolt 130 into the interior, or the door may be locked by protruding the dead bolt 130 outward.

The controller controls the operation of the motor 260 according to the location of the dead bolt 130 detected by the first sensors 160 and whether the door is opened or closed detected by the second sensor 170. can

When the first sensors 160 detect the dead bolt 130 in an accommodating state, there is no need to move the dead bolt 130 when the door open signal is input. Therefore, the controller does not operate the motor 260.

Similarly, when the first sensors 160 detect the dead bolt 130 in a protruding state, there is no need to move the dead bolt 130 when a door locking signal is input. Therefore, the controller does not operate the motor 260.

When the second sensor 170 detects that the door is opened, the control unit may control the dead bolt 130 to be maintained in an accommodated state. Therefore, it is possible to prevent the dead bolt 130 from colliding with the door frame when the door is closed.

In addition, when the second sensor 170 detects that the door is closed, the control unit controls the dead bolt 130 to protrude. Thus, the door can be stably locked.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

100: door lock mortise 110: case
111: front plate 120: latch bolt unit
121: latch bolt 122: roller
123: fixed frame 124: roller axis
125: shaft 126: coupling pin
127: support plate 128: latch spring
129: guide pin 130: dead bolt
131: slider 132: locking groove
133: protrusion 140: motor
141: pinion 150: dead bolt drive gear
151: gear 152: control lever
153: keyway 154: dead bolt spring
160: first sensor 170: second sensor

Claims (8)

In the latch bolt unit provided inside the case and protruding outward through the front plate while moving in the forward and backward directions,
The latch bolt unit,
a latch bolt that protrudes out of the case and prevents the door from opening by engaging a roller with a groove of a striker provided on the door frame;
a shaft having a groove formed along a circumference of a front end portion and inserting the front end portion into the latch bolt;
a coupling pin that penetrates the latch bolt and is inserted into the groove of the shaft to couple the latch bolt and the shaft;
a support plate fixed to the case and supporting the shaft so that the shaft is movable; and
and a latch spring provided to surround the shaft between the latch bolt and the support plate and providing elastic force to the latch bolt in a direction toward the outside. According to claim 1,
Further comprising guide pins provided to pass through the rear end of the shaft and having both ends respectively inserted into guide holes formed in the front and rear directions of the case,
The latch bolt unit, characterized in that the guide pin guides the forward and backward movement of the latch bolt unit while moving along the guide holes. According to claim 1,
The latch bolt,
a fixing frame covering upper and lower surfaces of the roller and to which the shaft is coupled by the coupling pin; and
The latch bolt unit further comprises a roller shaft having both ends fixed to the fixing frame while passing through holes vertically provided in the roller so that the roller can rotate, and coupling the fixing frame and the roller. According to claim 3,
The fixed frame,
a shaft hole provided along the front-back direction and into which the front end of the shaft is inserted; and
It is provided along the vertical direction and includes a pin hole into which the coupling pin is inserted,
The latch bolt unit, characterized in that a portion of the shaft hole and the pin hole intersect each other. According to claim 3,
The latch bolt, in order to minimize a contact area between the roller and the fixing frame, protrudes along the circumference of the through hole on the upper and lower surfaces of the roller and further comprises a contact protrusion contacting the fixing frame. Latch bolt unit. According to claim 5,
The contact protrusion has a ring shape having a concentric axis with the through hole,
Latch bolt unit, characterized in that the outer radius of the contact protrusion is smaller than the radius of the roller. According to claim 5,
Latch bolt unit, characterized in that the roller has a cylindrical shape with a constant diameter so that the roller is in line contact with the groove of the striker to suppress wear of the roller. a latch bolt unit provided inside the case and protruded to the outside through the front plate;
a dead bolt provided inside the case and protruded to the outside through the front plate;
a motor providing a driving force for reciprocating the dead bolt; and
A dead bolt drive gear that is caught on a slider connected to the dead bolt, has a gear engaged with a pinion of a motor, and reciprocates according to the driving of the motor to protrude the dead bolt to the outside or accommodate it to the inside. ,
The latch bolt unit,
a latch bolt that protrudes out of the case and prevents the door from opening by engaging a roller with a groove of a striker provided on the door frame;
a shaft having a groove formed along a circumference of a front end portion and inserting the front end portion into the latch bolt;
a coupling pin that penetrates the latch bolt and is inserted into the groove of the shaft to couple the latch bolt and the shaft;
a support plate fixed to the case and supporting the shaft so that the shaft is movable; and
and a latch spring provided to surround the shaft between the latch bolt and the support plate and providing elastic force to the latch bolt in a direction toward the outside.

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