CN110241563B

CN110241563B - Miniaturized door lock device

Info

Publication number: CN110241563B
Application number: CN201810422192.3A
Authority: CN
Inventors: 林漳周; 徐祥元; 吴玟泳
Original assignee: Duganix Co ltd
Current assignee: Duganix Co ltd
Priority date: 2018-03-07
Filing date: 2018-05-04
Publication date: 2021-06-18
Anticipated expiration: 2038-05-04
Also published as: CN110241563A; KR101959753B1

Abstract

The present invention relates to a door lock device suitable for electronic products and the like and used for locking or unlocking a door. The door lock device includes: the door lock body is provided with an accommodating space; a lock catch which rotates when the door hook of the door enters or retreats and is combined with or separated from the door hook; a latch support member coupled to the door latch body through a hinge and supported, supporting rotation of the latch through coupling with the latch, and performing a rotation motion centering on the hinge along an entering or retreating direction of the door hook when the latch performs the rotation motion; a slider moving between a locking position restricting movement of the latch support member and an unlocking position allowing movement of the latch support member; a solenoid including a bobbin for winding a coil and a plunger moving toward the bobbin according to an electric signal; and the elastic component is positioned between the door lock body and the lock catch supporting component and is used for pressurizing the lock catch supporting component towards the direction far away from the door lock body.

Description

Miniaturized door lock device

Technical Field

The present invention relates to a door lock device suitable for electronic products and the like and used for locking or unlocking a door.

Background

In a drum washing machine or a dryer, which is one of electronic products, an inlet for inputting laundry is located at a front surface, and a door is provided in front of the inlet to open and close the inlet. The following description will be made with reference to a drum washing machine.

A door lock device for locking a door is provided in the drum washing machine to prevent the door from being opened during a washing process. This is because, if the door is opened during the washing process, the washing water and the laundry are discharged to the outside, which may cause a problem that the washing is interrupted, and there may be a safety accident due to the rotating drum. Also, in the case where the door needs to be opened during washing, the door lock device must be configured such that the door can be manually switched to an unlocked state by the unlocking unit.

Korean granted patent No. 10-0980441 discloses a simple and reliable door lock device.

The door lock device includes: a latch which is coupled with or separated from a door hook of a door while rotating when the door hook enters or retreats; a latch support member for supporting rotation of the latch, and reciprocating along an entering or retreating direction of the door hook when the latch rotates; the door lock body is used for supporting the reciprocating movement of the lock catch supporting part; and a locking processing part which is horizontally moved by a solenoid to lock the lock catch in a state that the lock catch is coupled with the door hook.

In the drum washing machine, a space in which the door lock device can be installed may be very limited according to the specifications of the small, medium, and large washing machines, but the door lock device is long and thus is difficult to be applied to a small washing machine or the like where the space for installing the door lock device is narrow.

Documents of the prior art

Patent document

Patent document 1: korean granted patent No. 10-0980441

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a door lock device which has a shortened longitudinal length and is applicable to an electronic product having a narrow installation space, as a door lock device used for the electronic product.

The door lock device for locking or unlocking a door according to the present invention for achieving the above-described object includes: the door lock body is provided with an accommodating space; a latch which rotates and is combined with or separated from a door hook when the door hook of the door enters or retreats; a latch support member coupled to the door lock body through a hinge and supported by the door lock body, and coupled to the latch to support rotation of the latch, and configured to rotate about the hinge in a direction in which the door hook is moved in a backward direction; a slider that moves between a lock position that restricts movement of the latch support member and an unlock position that allows movement of the latch support member; a solenoid including a bobbin around which a coil is wound and a plunger that moves toward the bobbin in response to an electric signal; and an elastic member located between the door lock body and the latch support member, for pressurizing the latch support member toward a direction away from the door lock body.

Further, the door lock device of the present invention includes: a slide spring for pressurizing the slider toward the lock position; and 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 slider to move the slider, the heart cam includes a guide wall portion for guiding the movement of the heart cam pin, and a pin support portion inside the guide wall portion, the heart cam pin is supported by the pin support portion at the unlock position, and the heart cam pin is supported by the guide wall portion at the lock position.

Further, the bobbin has a terminal insertion slot into which a terminal is inserted, and the door lock device further includes: a coil bobbin terminal inserted into the terminal insertion slot and having a protruding portion at one side; and a connection terminal inserted into the terminal insertion slot and connected to the bobbin terminal by being pressed by the protrusion.

According to the present invention, it is possible to provide a miniaturized door lock device which has a shortened longitudinal length as a door lock device used for an electronic product and is applicable to an electronic product having a narrow installation space.

Drawings

Fig. 1 is a perspective view showing a door lock device according to an embodiment of the present invention.

Fig. 2 is a perspective view showing a state where a cover is detached from the door lock device of fig. 1.

Fig. 3 is an exploded perspective view illustrating an exploded state of the door lock device of fig. 1.

Fig. 4 is a schematic side sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in an unlock position.

Fig. 5 is a schematic top sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in an unlocked position.

Fig. 6 is a schematic side sectional view showing a state where a slider in the door lock device according to the embodiment of the present invention is in a lock position.

Fig. 7 is a schematic top sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in a lock position.

Fig. 8A is a diagram showing in detail the heart cam and the heart cam pin when the slider in fig. 5 is in the unlocked position.

Fig. 8B is a diagram showing in detail the heart cam and the heart cam pin when the slider in fig. 7 is in the lock position.

Fig. 9 is a view showing a structure of a terminal for supplying power to a solenoid in the door lock apparatus according to the embodiment of the present invention.

Description of the reference numerals

10: door hook 11: combining hole

110: the door lock body 111: hinge assembly

120: the lock catch 120 a: fixing hook

120 b: pressing surface 120 c: lock catch hinge hole

120 d: position fixing hole 121: lock catch spring

126: snap hinge bar 127: position fixing rod

130: the latch supporting member 131: guide groove

135: elastic member 140: sliding block

141: locking projection 142: plunger groove

145: pin guide hole 146: reinforcing rib

151: the coil bobbin 152: plunger piston

155: the slide spring 161: coil skeleton terminal

162: connection terminal 171: auxiliary terminal

172: drive terminals 173: fixed terminal

180: manual unlocking part

Detailed Description

Hereinafter, the structure and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted herein that in the process of giving reference numerals to the structural elements of each drawing, the same reference numerals are used as much as possible for the reference numerals although shown in different drawings.

Fig. 1 is a perspective view showing a door lock device according to an embodiment of the present invention. Fig. 2 is a perspective view showing a state where a cover is detached from the door lock device of fig. 1. Fig. 3 is an exploded perspective view illustrating an exploded state of the door lock device of fig. 1. Fig. 4 is a schematic side sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in an unlock position. Fig. 5 is a schematic top sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in an unlocked position. Fig. 6 is a schematic side sectional view showing a state where a slider in the door lock device according to the embodiment of the present invention is in a lock position. Fig. 7 is a schematic top sectional view showing a state where a slider in a door lock device according to an embodiment of the present invention is in a lock position. Fig. 8A is a diagram showing in detail the heart cam and the heart cam pin when the slider in fig. 5 is in the unlocked position. Fig. 8B is a diagram showing in detail the heart cam and the heart cam pin when the slider in fig. 7 is in the lock position. Fig. 9 is a view showing a structure of a terminal for supplying power to a solenoid in the door lock apparatus according to the embodiment of the present invention.

Referring to fig. 1 to 3, the door-lock apparatus of the present invention includes a door-lock body 110, a latch 120, a latch supporting 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 body 110 has an accommodating space in which the striker 120, the striker supporting member 130, the slider 140, the solenoid, and the like are accommodated. The door lock body 110 serves to support the movement of the locker 120 and the locker supporting part 130. Both side surfaces of the door lock body 110 are formed with position fixing holes 115. The position fixing hole 115 has a shape corresponding to a moving trajectory of the position fixing rod 127. For example, the position fixing hole 115 may be a long hole having a shape in which the middle is bent once, that is, a long hole having a "l" shape connected by a horizontal long hole and a vertical long hole. A hinge 111 for supporting the rotation of the locker supporting part 130 is formed at the door lock body 110.

The locker 120 has a structure that performs a rotating action when the door hook 10 of the door is moved in or out and is coupled to or separated from the door hook 10. For example, the latch 120 is formed with a fixing hook 120a and a pressing surface 120b, and the door hook 10 is formed with a coupling hole 11 into which the fixing hook 120a can be inserted.

When the door hook 10 enters, the pressing surface 120b is pushed by the front end of the door hook 10, thereby rotating the latch 120. The fixing hook 120a is curved in a hook shape, and the latch 120 is coupled to the door hook 10 by passing through the coupling hole 11 of the door hook 10 while the latch 120 is rotated by the pressing surface 120 b.

The latch 120 may further include a latch hinge hole 120c and a position fixing hole 120d disposed spaced apart from such latch hinge hole 120 c. The latch hinge rod 126 is inserted into the hinge hole 132 of the latch supporting member 130 by being inserted into the latch hinge hole 120 c. The position fixing rod 127 is inserted into the position fixing hole 120 d.

The latch hinge bar 126 supports the latch 120 by being hinge-coupled to the latch supporting part 130 in a rotatable manner. The position fixing bar 127 can fix the locker 120 at a position coupled with or separated from the door hook 10 by interaction with the guide groove 131 formed at the locker supporting part 130 and the position fixing hole 115 formed at the door lock body 110, respectively.

The latch spring 121 is inserted into the latch hinge rod 126 to apply an elastic force in a direction in which the latch 120 is separated from the door hook 10 (a direction in which the latch 120 rotates downward centering on the hinge 111).

The latch supporting member 130 is coupled with and supported by the door lock body 110 by a hinge. The latch supporting part 130 includes: a guide groove 131 for inserting and guiding the position fixing bar 127; and a hinge hole 132 for inserting the snap hinge rod 126.

The latch support member 130 supports the rotation of the latch 120 by being coupled to the latch 120, and when the latch 120 rotates, the latch rotates around the hinge 111 in the direction in which the door hook 10 moves in or out. Both ends of the latch hinge bar 126 support the rotation of the latch 120 by hinge-coupling with both sidewalls of the latch supporting part 130 through the hinge holes 132.

When the latch 120 rotates, the latch supporting member 130 rotates about the hinge 111 in the entering or retreating direction of the door hook 10 by the interaction with the position fixing rod 127 and the position fixing hole 115.

That is, as shown in fig. 4 and 6, when the door hook 10 enters, the striker supporting member 130 rotates about the hinge 111 in the entering direction of the door hook 10 and moves upward while the striker 120 is pushed and rotated by the door hook 10.

When the door hook 10 is retreated, the striker supporting member 130 rotates about the hinge 111 and rotates in the retreating direction of the door hook 10 to move downward while the striker 120 is pulled and rotated by the door hook 10.

The latch supporting member 130 receives an elastic force toward an entering direction of the door hook 10 (i.e., a direction rotating upward centering on the hinge 111) by the elastic member 135. The elastic member 135 can maintain the position fixing bar 127 in a fixed state at the end of the position fixing hole 115 in a state where the locker support part 130 is rotated to the upper side. In a state where the latch supporting member 130 is rotated to the lower portion, the elastic member 135 pressurizes the latch supporting member 130 toward the upper portion in a direction away from the door lock body 110, but the latch supporting member 130 maintains the lower position since the position fixing rod 127 is restricted in the position fixing hole 115.

As described above, the locker 120 can stably maintain the coupled or separated state with the door hook 10 by the interaction with the position fixing hole 115, the guide groove 131, and the position fixing bar 127.

The slider 140 is combined with the solenoid for locking the striker 120 (or the striker supporting member 130) in a state where the striker 120 is combined with the door hook 10. If the rotation of the striker 120 is not restricted in the state where the striker 120 is coupled to the door hook 10, the striker 120 rotates in the separating direction of the door hook 10 when the door hook 10 of the door is arbitrarily pulled by a user, so that the door can be easily opened.

However, when the locker 120 is locked by the slider 140, the locker 120 cannot be rotated even if the door hook 10 is pulled, and thus the locker 120 maintains a state of being coupled to the door hook 10. Therefore, the door can be prevented from being opened during the operation of the electronic product such as the drum washing machine or the dryer, and thus the electronic product can be safely used.

The slider 140 moves between a locked position for restricting the movement of the latch supporting member 130 and an unlocked position for allowing the movement of the latch supporting member 130. The elastic member 135 is located between the door lock body 110 and the latch supporting member 130, and pressurizes the latch supporting member 130 toward the locking position.

The solenoid includes: a bobbin 151 for winding a coil; a plunger 152 that moves toward the bobbin 151 in accordance with a current flowing through the coil; and a bobbin cover 153 for covering the bobbin 151. The plunger 152 moves the slider 140 by being inserted into the plunger groove 142 formed at the slider 140. The slide spring 155 presses the slider 140 toward the lock position.

Referring to fig. 4-7, 8A and 8B, in the present embodiment, the slider 140 may be supported in the locked and unlocked positions by the interaction of the heart cam pin 160 with the heart cam.

One end of the heart cam pin 160 is fixed to the pin fixing portion 112 of the door lock body 110, and the other end is supported by the 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 having a heart shape and located inside the guide wall portion 143.

Referring to fig. 8A, in the unlock position of the slider 140 of fig. 4 and 5, the heart-shaped cam pin 160 is supported by the concave portion 144a formed in the pin support portion 144. At this time, the locking protrusion 141 of the slider 140 is in a state of retreating toward the bobbin 151 side, and the latch supporting member 130 can rotate about the hinge 111.

When the door hook 10 enters in a state where the door is opened, the latch supporter 130 rotates about the hinge 111 in the entering direction of the door hook 10 and moves upward while the latch 120 is pushed by the door hook 10 and rotates, and the door is closed.

When the sensor detects that the door is closed, current is input to the solenoid, and the plunger 152 pulls the slider 140 by retreating (drawing). Thereby, the slider 140 is guided by the heart cam pin 160 in the arrow direction shown in fig. 8A, and is supported by the concave portion 143a of the guide wall portion 143, so as to be in the lock position (the state shown in fig. 8B).

At this time, the slider 140 is pressed by the slide spring 155 in a direction away from the bobbin 151. The locking protrusion 141 of the slider 140 is in a state of advancing in a direction away from the bobbin 151, and the locking protrusion 141 is in contact with the protrusion 133 of the latch supporting member 130, and thus is in a state of being unable to rotate.

In the state of fig. 8B in which the slider 140 is in the locked position, when it is necessary to move the slider 140 to the unlocked position, a current is input to the solenoid according to a signal, and the plunger 152 pulls the slider 140 in the process of retreating (drawing). Thereby, the slider 140 is guided by the heart cam pin 160 in the arrow direction shown in fig. 8B, and is supported by the concave portion 144a of the pin support portion 144, so as to be in the unlock position (the state shown in fig. 8A). At this time, the locking protrusion 141 of the slider 140 moves toward the bobbin 151 side, and thus the latch supporting member 130 is in a rotatable state.

The detection slider 140 may be placed in the locked position or the unlocked position by providing a detection switch. The detection switch includes: a drive terminal 172 connected to the auxiliary terminal 171; and a fixing terminal 173 spaced apart from the driving terminal 172. The drive terminal 172 has a drive contact 172a, and the fixed terminal 173 has a fixed contact 173 a. The driving contact 172a of the driving terminal 172 is always urged in a direction of contacting the fixed contact 173a of the fixed terminal 173.

In the unlocked position, the slider 140 is in a state of moving toward the side close to the bobbin 151. During the movement of the slider 140, the end of the driving terminal 172 contacts the reinforcing rib 146 and moves upward along the reinforcing rib 146, so that the driving contact 172a is spaced apart from the fixed contact 173 a. Thus, the detection switch recognizes that the slider 140 is in the unlock position.

In the lock position, the slider 140 is in a state of moving away from the bobbin 151. During the movement of the slider 140, the driving contact 172a and the fixed contact 173a are short-circuited as the reinforcing rib 146 is spaced apart from the end of the driving terminal 172. Thereby, the detection switch recognizes that the slider 140 is in the lock position.

The manual unlocking part 180 protrudes to the outside of the door lock device to allow a user to manually unlock the latch supporting member 130 in an emergency. In an emergency, when a user manually pulls the unlocking part 180, the slider 140 connected to the manual unlocking part 180 is pulled in an unlocking direction, so that the latch support member 130 is rotated, and thus the door can be opened.

According to the present invention, the latch support member 130 supports the latch 120 while rotating around the hinge 111, and only one elastic member 135 is provided on the opposite side of the hinge 111 to always press the latch support member 130 toward the locking position. Therefore, in the conventional door lock device, only one elastic member may be provided at both sides of the striker 120, thereby shortening the longitudinal length.

Further, it is possible to provide a miniaturized door lock device which is applicable to an electronic product having a narrow installation space by further shortening the longitudinal length of the solenoid by causing the solenoid to perform only a suction action of pulling the plunger 152 toward the bobbin 151 side and causing the slide spring 155 to perform a discharge action of separating the plunger 152 from the bobbin 151.

On the other hand, a terminal structure for supplying power to the solenoid in the present invention will be described with reference to fig. 9.

The coil is wound around a bobbin 151 of the solenoid, and an interference member is not provided at a side end of the bobbin 151 in order to wind the coil. The terminal structure for supplying power to the coil in the past is very complicated to prevent the interference member from being located at the side front end of the bobbin 151.

In the present invention, in order to prevent interference parts from being located at the front ends of the side portions of the bobbin 151 and simplify the terminal structure, the bobbin 151 has terminal insertion grooves 151a for inserting terminals. The bobbin terminal 161 is inserted into the terminal insertion groove 151a, and has a protruding portion 161a at one side, for example, at a middle portion. The connection terminal 162 is pressed by the protrusion 161a of the bobbin terminal 161 to be in contact with the bobbin terminal 161 in the process of being inserted into the terminal insertion groove 151 a. One end of the connection terminal 162 is inserted into the terminal insertion groove 151a, and the connection terminal 162 may have a "l" shape bent at the middle thereof to extend toward the front end of the side portion of the bobbin 151.

The coil is wound around the bobbin 151 in a state where the connection terminals 162 are not inserted into the terminal insertion grooves 151a, and after the coil is wound around the bobbin 151, the connection terminals 162 are inserted into the terminal insertion grooves 151a to be connected to the bobbin terminals 161, and the connection terminals 162 extend toward the front ends of the side portions of the bobbin 151.

The terminal structure is provided to supply power to the solenoid, so that the coil can be wound around the bobbin 151 and the terminal structure can be simplified.

It is apparent to those skilled in the art that the present invention is not limited to the above-described embodiments, and various modifications or variations can be made without departing from the technical spirit of the present invention. For example, the manner in which the slider limits the movement of the latch support member 130 may take a variety of forms and is not limited to a particular embodiment. Also, the structures of the locker 120, the locker support member 130, and the door lock body 110 are not limited to the specific embodiments as long as the locking and unlocking purposes can be achieved.

Claims

1. A door lock apparatus for use in an electronic product and for locking or unlocking a door, comprising:

the door lock body is provided with an accommodating space;

a latch which rotates and is combined with or separated from a door hook when the door hook of the door enters or retreats;

a latch support member coupled to the door lock body through a hinge and supported by the door lock body, and coupled to the latch to support rotation of the latch, and configured to rotate about the hinge in a direction in which the door hook is moved in a backward direction;

a slider that moves between a lock position that restricts movement of the latch support member and an unlock position that allows movement of the latch support member;

a solenoid including a bobbin around which a coil is wound and a plunger that moves toward the bobbin in response to an electric signal; and

an elastic component which is positioned between the door lock body and the lock catch supporting component and is used for pressurizing the lock catch supporting component towards the direction far away from the door lock body,

the plunger is connected to the slider and operates to pull the slider toward the unlock position side while moving toward the bobbin side according to an electric signal,

in the unlock position of the slider, when the door hook is retracted, the striker rotates, and the striker support member rotates about the hinge toward the door lock body,

when the door hook enters, the latch rotates, so that the latch support member rotates around the hinge in a direction away from the door lock body,

the lock catch is connected with a position fixing rod,

a position fixing hole into which the position fixing rod is inserted is formed on the door lock body,

when the lock catch rotates, the position fixing rod is guided by the position fixing hole, so that the lock catch can be respectively fixed at the position combined with or separated from the door hook,

the elastic component exerts elastic force, so that the position fixing rod can keep a state of being fixed in the position fixing hole.

2. The door-lock apparatus according to claim 1, further comprising:

a slide spring for pressurizing the slider toward the lock position; and

and 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.

3. The door-lock apparatus according to claim 2,

the plunger is inserted into a plunger groove formed in the slider to move the slider,

the heart cam includes a guide wall portion for guiding the movement of the heart cam pin and a pin support portion inside the guide wall portion,

the heart-shaped cam pin is supported by the pin supporting portion at the unlock position,

the heart cam pin is supported by the guide wall portion at the lock position.

4. The door-lock apparatus according to claim 1,

the bobbin has terminal insertion grooves for inserting terminals,

the door lock device further includes:

a coil bobbin terminal inserted into the terminal insertion slot and having a protruding portion at one side;

and a connection terminal inserted into the terminal insertion slot and connected to the bobbin terminal by being pressed by the protrusion.