KR101959753B1 - Door lock device with reduced size - Google Patents

Abstract

The present invention relates to a door lock device which is applied to an electronic product or the like to lock or unlock a door. The door lock device comprises: a door lock body having an accommodation space; a locker which rotates when a hook of a door enters or retreats, and is coupled or separated from the hook; a locker support member which is coupled to the door lock body by a hinge to be supported, is coupled to the locker to support rotation of the locker, and rotates around the hinge in an entering direction or a retreating direction of the hook when the locker rotates; a slider to move between a locking position for restricting a movement of the locker support member and an unlocking position for allowing a movement of the locker support member; a solenoid including a bobbin on which a coil is wound, and a plunger to move towards the bobbin in accordance with an electrical signal; and an elastic member positioned between the door lock body and the locker support member to press the locker support member in a direction of separating the locker support member from the door lock body. Accordingly, the door lock device used in an electronic product has a reduced longitudinal length to be applicable to an electronic product with a narrow space to be installed.

Description

[0001] The present invention relates to a door lock device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door lock device for locking or unlocking a door,

In a drum washing machine or a dryer, which is a kind of electronic products, a charging port for charging laundry is placed on the front side, and a door is installed in front of the charging port to open and close the charging port. The following description will be made with reference to a drum washing machine.

The drum washing machine is provided with a door lock device for locking the door so that the door is not opened during washing. This is because when the door is opened during washing, there is a problem that the washing water and the laundry are discharged out of the washing machine, and there is a risk of safety accident due to the rotating drum. In addition, when the door must be opened during washing, the door lock device needs to be configured so that the door is manually switched to the unlocked state by the unlocking means.

Registration No. 10-0980441 discloses a simple and reliable door lock device.

The door lock device includes a locker that engages or disengages with the hook while being rotated when the hook of the door enters or retracts, and a locker that supports the rotation of the locker and reciprocates in the direction of the hook, And a lock processing unit for horizontally moving the locker by the solenoid so as to lock the locker in a state where the locker is engaged with the hook.

The space for installing the door lock device in the drum washing machine may be very limited depending on the specifications of the washing machine such as a small size, a medium size and a large size. However, the door lock device is relatively long and is applied to a place where a door lock device is installed There was a difficult problem.

Korean Patent No. 10-0980441

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a miniaturized door lock apparatus that can be applied to electronic products having a narrow installation space by having a reduced longitudinal length in a door lock apparatus used in electronic products There is a purpose.

In order to achieve the above object, the present invention provides a door lock apparatus for locking or unlocking a door, comprising: a door lock main body having a receiving space; A rocker engaged or disconnected with the hook while being rotated when the hook of the door enters or retracts; A rocker support member coupled to the door lock body by a hinge and supported by the rocker to support the rotation of the rocker and rotate about the hinge in a direction in which the hook is moved or retracted when the rocker is rotated; A slider moving between a lock position for interrupting the movement of the rocker support member and a release position for allowing movement of the rocker support member; A solenoid including a bobbin wound with a coil and a plunger moving toward the bobbin in accordance with an electrical signal; An elastic member positioned between the door lock main body and the locker support member and pressing the locker support member in a direction away from the door lock main body; .

A slide spring for pressing the slider to the lock position; A heart cam pin having one end fixed to the door lock body and the other end supported by a heart cam formed on the slider; .

The plunger is inserted into a plunger groove formed in the slide to move the slide. The heart cam includes a guide wall portion for guiding movement of the heart cam pin, and a pin support portion inside the guide wall portion, In the release position, the heart cam pin is supported by the pin support portion, and the heart cam pin is supported by the guide wall portion in the lock position.

The bobbin includes a terminal insertion groove for inserting a terminal, the door lock device includes a bobbin terminal inserted into the terminal insertion groove and having a protrusion on one side; A connection terminal inserted into the terminal insertion groove and pressurized by the protrusion to be connected to the bobbin terminal; .

According to the present invention, it is possible to provide a miniaturized door lock apparatus that can be applied to an electronic product having a narrow installation space by having a reduced longitudinal length in a door lock apparatus used in an electronic product.

1 is a perspective view showing a door lock apparatus according to an embodiment of the present invention.
2 is a perspective view showing a state where the cover is removed from the door lock apparatus of FIG.
3 is an exploded perspective view showing a state in which the door lock apparatus of Fig. 1 is disassembled.
4 is a schematic side cross-sectional view showing when the slide is in the unlocked position in the door lock apparatus according to the embodiment of the present invention.
5 is a schematic plan sectional view showing when the slide is in the release position in the door lock apparatus according to the embodiment of the present invention.
6 is a schematic side cross-sectional view showing when the slide is in the locked position in the door lock device according to the embodiment of the present invention.
7 is a schematic plan sectional view showing when the slide is in the locked position in the door lock apparatus according to the embodiment of the present invention.
Fig. 8A is a view showing in detail the heart cam and the heart cam pin when the slide is in the release position in Fig. 5; Fig.
FIG. 8B is a view showing the heart cam and the heart cam pin in detail when the slide is in the locked position in FIG. 7; FIG.
9 is a view showing a terminal structure for supplying power to a solenoid in a door lock apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The same reference numerals in the drawings denote like elements throughout the drawings.

1 is a perspective view showing a door lock apparatus according to an embodiment of the present invention. 2 is a perspective view showing a state where the cover is removed from the door lock apparatus of FIG. 3 is an exploded perspective view showing a state in which the door lock apparatus of Fig. 1 is disassembled. 4 is a schematic side cross-sectional view showing when the slide is in the unlocked position in the door lock apparatus according to the embodiment of the present invention. 5 is a schematic plan sectional view showing when the slide is in the release position in the door lock apparatus according to the embodiment of the present invention. 6 is a schematic side cross-sectional view showing when the slide is in the locked position in the door lock device according to the embodiment of the present invention. 7 is a schematic plan sectional view showing when the slide is in the locked position in the door lock apparatus according to the embodiment of the present invention. Fig. 8A is a view showing in detail the heart cam and the heart cam pin when the slide is in the release position in Fig. 5; Fig. FIG. 8B is a view showing the heart cam and the heart cam pin in detail when the slide is in the locked position in FIG. 7; FIG. 9 is a view showing a terminal structure for supplying power to a solenoid in a door lock apparatus according to an embodiment of the present invention.

1 to 3, the door lock apparatus of the present invention includes a door lock main body 110, a locker 120, a rocker support member 130, an elastic member 135, a slider 140, a solenoid, a slide spring 155 A heart cam pin 160, and the like.

The door lock main body 110 has a receiving space and accommodates the locker 120, the rocker supporting member 130, the slider 140, the solenoid, and the like in the receiving space. The door lock main body 110 supports the movement of the rocker 120 and the rocker support member 130. On both sides of the door lock main body 110, a position fixing hole 115 is formed. The position fixing hole 115 has a shape corresponding to the movement locus of the position fixing rod 127. For example, the position fixing hole 115 may be a substantially '?' Shaped long hole having a curved long hole, that is, a horizontal long hole and a vertical long hole. The door lock main body 110 is formed with a hinge 111 for rotatably supporting the rocker support member 130.

The locker 120 has a structure that is engaged with or detached from the hook 10 while being rotated when the hook 10 of the door enters or retracts. For example, the locker 120 is provided with a fixing hook 120a and a pressing surface 120b, and the hook 10 is formed with a coupling hole 11 through which the fixing hook 120a can be inserted.

The pushing surface 120b is pushed by the tip of the hook 10 to rotate the locker 120 when the hook 10 enters. The locking hook 120a is formed in a bent shape so that the locker 120 and the hook 120 penetrate through the coupling hole 11 of the hook 10 during the rotation of the locker 120 by the pressing surface 120b, (10).

The rocker 120 may further include a rocker hinge hole 120c and a position fixing hole 120d that is spaced apart from the rocker hinge hole 120c. A rocker hinge rod 126 is inserted into the rocker hinge hole 120c and fitted into the hinge hole 132 of the rocker support member 130. [ The position fixing rod 127 is inserted into the position fixing hole 120d.

The rocker hinge rods 126 are hinged to the rocker support member 130 to support the rocker 120 in a rotatable manner. The position fixing rods 127 are engaged with the guide grooves 131 formed in the rocker support member 130 and the position fixing holes 115 formed in the door lock main body 110, Or in separate locations, respectively.

The locker spring 121 is inserted into the rocker hinge rod 126 and exerts an elastic force in a direction in which the locker 120 and the hook 10 are separated (the direction in which the rocker 120 rotates downward about the hinge 111) do.

The rocker support member 130 is coupled to the door lock main body 110 by a hinge 111 and supported. The rocker support member 130 includes a guide groove 131 in which the position fixing rod 127 is inserted and guided and a hinge hole 132 into which the rocker hinge rod 126 is inserted.

The rocker support member 130 is coupled with the rocker 120 to support the rotation of the rocker 120 and to rotate about the hinge 111 in the direction in which the hook 10 enters or retracts during the rotation operation of the rocker 120. [ . Both ends of the rocker hinge rod 126 are hinged to the both side walls of the rocker support member 130 through the hinge holes 132 to support the rotation of the rocker 120.

The locker supporting member 130 is positioned at the center of the hinge 111 in the direction of entering or retreating the hook 10 by the interaction of the position fixing rod 127 and the position fixing hole 115 in the rotation operation of the rocker 120 Rotate.

4 and 6, when the hook 10 enters, the rocker support member 130 moves the hinge 111 in the middle of the rotation of the rocker 120 by the hook 10, And moves upward in the direction in which the hook 10 enters.

When the hook 10 is retracted, the rocker support member 130 rotates about the hinge 111 in the process of rotating the locker 120 by the hook 10 to rotate in the retreating direction of the hook 10 .

The locker supporting member 130 is subjected to an elastic force by the elastic member 135 in a direction in which the hook 10 enters (that is, in a direction rotated upward about the hinge 111). The elastic member 135 allows the position fixing bar 127 to remain fixed at the end of the position fixing hole 115 while the rocker support member 130 is rotated upward. The elastic member 135 presses the rocker support member 130 upward in the direction away from the door lock main body 110 while the rocker support member 130 is rotated downward, So that the rocker support member 130 is held in the lower position.

The locker 120 can stably maintain the state of being engaged with or separated from the hook 10 by the interaction of the position fixing hole 115 and the guide groove 131 and the position fixing bar 127. [

The slider 140 is for locking the locker 120 (or the rocker support member 130) in a state where the locker 120 is engaged with the hook 10 by being joined with the solenoid. If the locker 120 does not restrain the rotation of the rocker 120 while engaged with the hook 10, the locker 120 is rotated in the direction in which the hook 10 is disengaged when the door hook 10 is arbitrarily pulled by the user The door can be opened easily.

However, if the locker 120 is locked by the slider 140, the locker 120 can not be rotated even if the hook 10 is pulled, so that the locker 120 is coupled to the hook 10 . Therefore, it is possible to prevent the door from being opened during the operation of the electronic product such as the drum washing machine or the dryer, so that the electronic product can be safely used.

The slider 140 moves between a locking position for interrupting the movement of the rocker support member 130 and a releasing position for allowing the movement of the rocker support member 130. [ The elastic member 135 is positioned between the door lock body 110 and the rocker support member 130 to press the rocker support member 130 to the lock position.

The solenoid includes a bobbin 151 around which a coil is wound, a plunger 152 moving toward the bobbin 151 in accordance with the current flowing through the coil, and a bobbin cover 153 covering the bobbin 151. The plunger 152 is inserted into the plunger groove 142 formed in the slider 140 to move the slide 140. The slide spring 155 presses the slider 140 to the locked position.

Referring to Figs. 4 to 7, 8A and 8B, in this embodiment, the slider 140 can be supported at the lock position and the release position by the interaction of the heart cam pin 160 and the heart cam.

One end of the heart cam pin 160 is fixed to the pin fixing portion 112 of the door lock main body 110 and the other end is supported by a heart cam formed on the slider 140. The heart cam includes a guide wall portion 143 for guiding the movement of the heart cam pin 160 and a pin support portion 144 formed in a heart shape inside the guide wall portion 143.

Referring to FIG. 8A, at the release position of the slider 140 of FIGS. 4 and 5, the heart cam pin 160 is supported by the recess 144a formed in the pin support 144. As shown in FIG. At this time, the locking protrusion 141 of the slider 140 is retracted toward the bobbin 151, and the rocker supporting member 130 is rotatable about the hinge 111.

When the door 10 is opened and the door 10 is opened, the rocker support member 130 rotates about the hinge 111 in the process of the rotation of the rocker 120 by the hook 10, It rotates in the entering direction and moves upward, and the door is closed.

When the sensor detects the door closing, electricity is applied to the solenoid, and the plunger 152 pulls the slider 140 while retracting (sucking). The slider 140 is guided by the heart cam pin 160 in the direction of the arrow shown in Fig. 8A and supported by the concave portion 143a of the guiding wall portion 143 to be in the locked position Shown state).

At this time, the slide spring 155 presses the slider 140 in a direction away from the bobbin 151. The locking protrusion 141 of the slider 140 is advanced in the direction away from the bobbin 151 and the locking protrusion 141 is in contact with the protrusion 133 of the rocker support member 130, Can not be rotated.

When the slider 140 needs to be moved to the release position in the state of FIG. 8B where the slider 140 is in the locked position, electric power is applied to the solenoid according to the signal, and the plunger 152 is retracted The slider 140 is pulled. The slider 140 is guided by the heart cam pin 160 in the direction of the arrow shown in Fig. 8B and supported by the concave portion 144a of the pin support portion 144 to be in the released position Shown state). At this time, the locking protrusion 141 of the slider 140 is moved toward the bobbin 151 so that the rocker supporting member 130 is rotatable.

A detection switch is provided to detect that the slider 140 is in the locked position or the released position. The sensing switch is composed of a movable terminal 172 connected to the auxiliary terminal 171 and a fixed terminal 173 spaced apart from the movable terminal 172. The movable terminal 172 has the movable contact 172a and the fixed terminal 173 has the fixed contact 173a. The movable contact 172a of the movable terminal 172 always receives a force in a direction in which it contacts the fixed contact 173a of the fixed terminal 173. [

At the release position, the slider 140 is moved toward the bobbin 151 side. The movable contact 172a and the fixed contact 173a are spaced apart from each other while the end of the movable terminal 172 contacts the rib 146 and moves upward along the rib 146 in the process of moving the slider 140 have. Accordingly, the detection switch recognizes that the slider 140 is in the release position.

In the locked position, the slider 140 is moved away from the bobbin 151. [ During the movement of the slider 140, the movable contact 172a and the fixed contact 173a are short-circuited while the rib 146 is separated from the end of the movable terminal 172. [ Accordingly, the detection switch recognizes that the slider 140 is in the locked position.

The manual releasing portion 180 is protruded to the outside of the door lock device in order to release the lock state of the locker supporting member 130 manually by the user in an emergency. When the user pulls the manual releasing portion 180 in an emergency, the slider 140 connected to the manual releasing portion 180 is pulled in the releasing direction, so that the rocker supporting member 130 is rotatable and the door can be opened.

The rocker support member 130 supports the rocker 120 while being rotated about the hinge 111 and the elastic member 135 is positioned only one side of the hinge 111 opposite the rocker support member 130, (130) to the lock position at all times. Therefore, only one elastic member positioned on both sides of the locker 120 in the conventional door lock apparatus can be disposed, thereby reducing the longitudinal length.

The solenoid sucks the plunger 152 toward the bobbin 151 and causes the slide spring 155 to perform the discharging action of moving the plunger 152 away from the bobbin 151, It is possible to provide a miniaturized door lock apparatus which can be applied to electronic products having a narrow installation space by further reducing the longitudinal length.

The terminal structure for supplying power to the solenoid will be described with reference to FIG.

A coil is wound on the bobbin 151 of the solenoid, and no interfering member is placed on the side of the side of the bobbin 151 in order to wind the coil. Conventionally, a terminal structure for supplying power to a coil has become very complicated in order to prevent an interfering member from being positioned at the front side of the side of the bobbin 151.

The bobbin 151 has a terminal insertion groove 151a for inserting the terminal so as to simplify the terminal structure while preventing a member interfering with the front end of the bobbin 151 from being positioned. The bobbin terminal 161 is inserted into the terminal insertion groove 151a and has a protrusion 161a at one side, for example, at the center thereof. The connection terminal 162 is pressed by the protrusion 161a of the bobbin terminal 161 and connected to the bobbin terminal 161 in the process of being inserted into the terminal insertion groove 151a. One end of the connection terminal 162 is inserted into the terminal insertion groove 151a and can be bent in the middle to have an "a " shape extending to the front end of the side of the bobbin 151. [

The coil is wound around the bobbin 151 in a state where the connection terminal 162 is not inserted into the terminal insertion groove 151a and the coil is wound around the bobbin 151 and then the connection terminal 162 is inserted into the terminal insertion groove 151a And the connection terminal 162 is extended to the front end of the side of the bobbin 151. [

By having such a terminal structure for supplying power to the solenoid, the coil structure can be wound around the bobbin 151 while simplifying the terminal structure.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention will be. For example, the manner in which the slide restrains movement of the rocker support member 130 is possible in various forms and is not limited to a specific embodiment. Also, the configurations of the locker 120, the locker supporting member 130, and the door lock main body 110 are not limited to the specific embodiments as long as the objects of locking and unlocking can be achieved.

10: Hook
11: Coupling hole
110: Door lock main body
111: Hinge
120: Rocker
120a: Fixed hook
120b: pressing face
120c: Rocker hinge hole
120d: Position fixing hole
121: Rocker spring
126: Rocker hinge rod
127:
130: rocker support member
131: guide groove
135: elastic member
140: Slider
141: Locking projection
142: plunger groove
145: pin guide hole
146: rib
151: Bobbin
152: plunger
155: Slide spring
161: Bobbin terminal
162: connection terminal
171: auxiliary terminal
172: movable terminal
173: Fixed terminal
180: Manual release section

Claims (4)

CLAIMS 1. A door lock device used in an electronic product to lock or unlock a door,
A door lock main body having a receiving space;
A rocker engaged or disconnected with the hook while being rotated when the hook of the door enters or retracts;
A rocker support member coupled to the door lock body by a hinge and supported by the rocker to support the rotation of the rocker and rotate about the hinge in a direction in which the hook is moved or retracted when the rocker is rotated;
A slider moving between a lock position for interrupting the movement of the rocker support member and a release position for allowing movement of the rocker support member;
A solenoid including a bobbin wound with a coil and a plunger moving toward the bobbin in accordance with an electrical signal;
An elastic member positioned between the door lock main body and the locker support member and pressing the locker support member in a direction away from the door lock main body;
Lt; / RTI >
The plunger being operatively connected to the slider so as to pull the slider while moving toward the bobbin in accordance with an electrical signal,
At the disengaged position of the slider, when the hook retracts, the rocker rotates, whereby the rocker support member rotates about the hinge toward the door lock body,
Wherein the locker rotates when the hook enters, thereby rotating the locker support member about the hinge in a direction away from the door lock body,
A position fixing rod 127 is connected to the locker,
The door lock main body is formed with a position fixing hole 115 into which the position fixing bar 127 is inserted,
The position fixing rod 127 is guided by the position fixing hole 115 when the rocker is rotated, so that the locker can be fixed at a position where the locker is engaged with or separated from the hook,
Wherein the elastic member is disposed on the opposite side of the hinge so as to apply an elastic force so that the position fixing bar (127) can be held in the position fixing hole (115). The method according to claim 1,
A slide spring for pressing the slider to the lock position;
A heart cam pin having one end fixed to the door lock body and the other end supported by a heart cam formed on the slider;
Further comprising a door lock mechanism. 3. The method of claim 2,
The plunger is inserted into a plunger groove formed in the slide to move the slide,
The heart cam
A guide wall portion for guiding the movement of the heart cam pin, and a pin support portion inside the guide wall portion,
Wherein the heart cam pin is supported by the pin support portion in the release position,
And the heart cam pin is supported by the guide wall portion at the locked position. The method according to claim 1,
Wherein the bobbin has a terminal insertion groove for inserting a terminal,
The door lock device includes:
A bobbin terminal inserted into the terminal insertion groove and having a protrusion on one side;
A connection terminal inserted into the terminal insertion groove and pressurized by the protrusion to be connected to the bobbin terminal;
The door lock device further comprising:

Images