Patent Description:
Generally, slide rail assemblies can be used in rack systems in homes, offices or electronic apparatuses. The slide rail assembly includes a first rail disposed on a first object and a second rail disposed on a second object. For example, the first object and the second object respectively can be a cabinet and a drawer. The drawer can be opened or retracted relative to the cabinet by a movement of the second rail relative to the first rail. However, sometimes, it is not desired to configure the second rail and the second object to freely move away from a predetermined position relative to the first rail and the first object, so as to meet different requirements.

For example, in <CIT>, it discloses a drawer slide with a locking mechanism. The locking mechanism is an electronic lock. As shown in <FIG> of <CIT>, the drawer slide includes an outer slide member and an inner slide member. The inner slide member can be located at a retracted position relative to the outer slide member. A pin is disposed on a rear end of the inner slide member. Besides, the locking mechanism includes a latch receiver, a lever arm and a motor. As shown in <FIG> and <FIG> of <CIT>, the latch receiver can be located at a first position, and when the latch receiver is located at the first position, the latch receiver is configured to receive the pin disposed on the inner slide member. When the inner slide member is retracted, the latch receiver is pushed by the pin to rotate from the first position to a second position for locking the inner slide member. As shown in <FIG> of <CIT>, once the motor receives an electrical control signal, the motor can drive the lever arm to rotate to an unlocking position, so that a top portion of the lever arm does not block the latch receiver. When the top portion of the lever arm does not block the latch receiver, the latch receiver is driven by a spring to rotate from the second position to the first position for allowing the pin to be released from the latch receiver. By allowing the pin to be released from the latch receiver, the inner slide member can be released relative to the outer slide member, i.e., the inner slide member can depart away from the retracted position relative to the outer slide member.

It should be noticed that, in <CIT>, it further discloses a manual release. The manual release is extended or exposed out of a case of the locking mechanism. When a power failure or a damage of an electronic component occurs, the manual release can be pulled to drive the lever arm to move to the unlocking position, so that the latch receiver is driven by the spring to move back to the first position for releasing the pin, so as to allow the inner slide member to depart away from the retracted position.

Besides, in <CIT>, it discloses an electronic lock which utilizes a motor to drive a latch to move between a locking position and an unlocking position and further discloses a manual lanyard release mechanism for driving the latch to move from the locking position to the unlocking position when the manual lanyard release mechanism is pulled.

Furthermore, in <CIT> and <CIT>, each of them discloses an electronic lock which achieves a manual unlocking function by applying an acting force with an additional mechanism, such as pulling a nylon rope or operating a linkage set. The additional mechanism is disposed on an outer surface of a cabinet and covered by a decoration plate or any other component, however, which causes negative impacts on utilization convenience and aesthetic appearance.

In addition, in <CIT>, it discloses a cupboard unit <NUM> and a drawer accommodated in the cupboard unit <NUM>. The drawer <NUM> can be moved to an extended position by a force when the drawer <NUM> is released. When the drawer <NUM> is located at a retracted position, the drawer <NUM> is locked by a locking part <NUM>. The locking part can be driven by a motor to move independently from a movement of the drawer <NUM>.

Considering different requirements or different operational principles, sometimes, it is not desired to achieve a locking function by any of the manners disclosed in the aforementioned patent documents. Furthermore, each of the aforementioned electronic locks requires a manual unlocking mechanical device, such as the manual release, when a power failure or a damage of an electronic component occurs. Therefore, developing a different lock device becomes an important topic in the field.

The present invention aims at providing a lock device adapted for a first object and a second object movable relative to the first object.

This is achieved by lock devices according to claim <NUM>. The dependent claims pertain to corresponding further developments and improvements.

As will be seen more clearly from the detailed description following below, the claimed lock device adapted for a first object and a second object movable relative to the first object includes a slider, a driving module, a latch and a power module. The driving module is configured to drive the slider to move between a locking position and an unlocking position. The latch is movably arranged on the slider. The power module is configured to provide electricity to the driving module. When the second object is located at a retracted position relative to the first object, the driving module is configured to drive the slider to move to the locking position, so that the latch is able to block the second object. When the driving module is not driven by the power module in a situation where there is a power failure or a damage of an electronic component, the latch is able to be driven by a movement of the second object to a predetermined position in an opening direction to move from an original state to a non-original state for driving the slider to move from the locking position to the unlocking position. The driving module includes a magnetic component configured to retain the slider at the unlocking position when the slider is located at the unlocking position. The lock device further includes a resilient component, such that when the slider is retained at the unlocking position in the situation where there is the power failure or the damage of the electronic component, a movement of the second object from the predetermined position in a retracted direction is able to cause the latch to move from the non-original state to the original state in response to a resilient force provided by the resilient component for allowing the second object to move to an extended position in the opening direction.

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as "top", "bottom", "left", "right", "front", "back", etc., is used with reference to the orientation of the Figure(s) being described. The components of the present invention can be positioned in a number of different orientations. As such, the directional terminology is used for purposes of illustration and is in no way limiting. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive. Also, if not specified, the term "connect" is intended to mean either an indirect or direct mechanical connection. Thus, if a first device is connected to a second device, that connection may be through a direct mechanical connection, or through an indirect mechanical connection via other devices and connections.

As shown in <FIG> and <FIG>, in an embodiment of the present invention, a lock device <NUM> is adapted for a furniture <NUM>. For example, the lock device <NUM> can be a smart lock or an electronic lock. The furniture <NUM> includes a first object <NUM> and a second object <NUM> movable relative to the first object <NUM>.

Preferably, the furniture <NUM> further includes a third object <NUM> movably mounted between the first object <NUM> and the second object <NUM>. For example, the first object <NUM>, the second object <NUM> and the third object <NUM> can respectively be a first rail, e.g., a fixed rail, a second rail, e.g., a movable rail, and a third rail between the first rail and the second rail, e.g., a middle rail between the fixed rail and the movable rail. However, the present invention is not limited thereto. The first object <NUM>, the second object <NUM> and the third object <NUM> are movable relative to one another longitudinally or linearly and cooperatively form an under-mount slide rail assembly <NUM>. Besides, in another embodiment, the furniture can only include the first rail and the second rail, and the third rail can be omitted.

Preferably, the first object <NUM> is arranged on, e.g., fixedly disposed on, a cabinet <NUM> of the furniture <NUM>, and the second object <NUM> is arranged on, e.g., fixedly disposed on, a drawer <NUM> of the furniture <NUM> and configured to support the drawer <NUM>. The drawer <NUM> is movable relative to the cabinet <NUM> by a movement of the second object <NUM> relative to first object <NUM>.

Preferably, the first object <NUM> includes an extending portion <NUM>. The second object <NUM> includes a supporting portion <NUM>.

As shown in <FIG> and <FIG>, the second object <NUM> can be located at a retracted position R relative to the first object <NUM>, and when the second object <NUM> is located at the retracted position R, the supporting portion <NUM> of the second object <NUM> is located at a position substantially corresponding to the extending portion <NUM> of the first object <NUM>.

Preferably, the lock device <NUM> is mounted on the first object <NUM>. Specifically, the lock device <NUM> includes a mounting feature <NUM>. A lateral wall <NUM> of the extending portion <NUM> of the first object <NUM> includes a mounting structure <NUM> for detachably engaging with the mounting feature <NUM>. The lock device <NUM> is detachably mounted on the first object <NUM> by a cooperation of the mounting feature <NUM> and the mounting structure <NUM>. For example, one of the mounting feature <NUM> and the mounting structure <NUM> can be a protruding portion, and the other of the mounting feature <NUM> and the mounting structure <NUM> can be a slot. However, the present invention is not limited thereto. In another embodiment, the lock device <NUM> can be mounted on the first object <NUM> by a screw component or through a welding process.

Preferably, the lock device <NUM> further includes a case <NUM> configured to cover and protect most of related components of the lock device <NUM>.

Preferably, the furniture <NUM> further includes an accessory component <NUM> detachably mounted on the supporting portion <NUM> of the second object <NUM> for cooperating with the lock device <NUM>. Specifically, the accessory component <NUM> includes a connecting feature <NUM>, and the supporting portion <NUM> of the second object <NUM> includes a connecting structure <NUM> for detachably engaging with the connecting feature <NUM>. The accessory component <NUM> is detachably mounted on the supporting portion <NUM> of the second object <NUM> by a cooperation of the connecting feature <NUM> and the connecting structure <NUM>. For example, one of the connecting feature <NUM> and the connecting structure <NUM> can be an engaging slot, and the other of the connecting feature <NUM> and the connecting structure <NUM> can be an engaging protrusion. However, the present invention is not limited thereto. For example, the accessory component <NUM> can be configured as an extending part of the second object <NUM> as the accessory component <NUM> is mounted on the second object <NUM>. Besides, in another embodiment, the accessory component <NUM> can be mounted on the second object <NUM> by a screw component or be integrally formed with the second object <NUM> through a welding process or an injection molding process.

Preferably, the accessory component <NUM> includes a first predetermined portion <NUM>, a second predetermined portion <NUM> and a space <NUM> defined between the first predetermined portion <NUM> and the second predetermined portion <NUM>.

As shown in <FIG>, the lock device <NUM> includes a slider <NUM>, a driving module <NUM> and a latch <NUM>.

The lock device <NUM> further includes a base <NUM>, a resilient component <NUM>, a first sensor <NUM>, a second sensor <NUM>, a fixing seat <NUM> and a control circuit board <NUM>.

The mounting feature <NUM> is disposed on the base <NUM> for cooperating with the mounting structure <NUM> for configuring the lock device <NUM> to be detachably mounted on the first object <NUM>. The slider <NUM>, the driving module <NUM>, the latch <NUM>, the resilient component <NUM>, the first sensor <NUM>, the second sensor <NUM>, the fixing seat <NUM> and the control circuit board <NUM> are arranged on the base <NUM>. The fixing seat <NUM> is vertically or perpendicularly disposed on the base <NUM>. At least a portion of the control circuit board <NUM> is arranged on the fixing seat <NUM>.

The driving module <NUM> is electrically connected to the control circuit board <NUM>. For example, the driving module <NUM> can be electrically connected to the control circuit board <NUM> by a first electrical wire 77a and a second electrical wire 77b. However, the present invention is not limited thereto.

The driving module <NUM> includes a magnetic component <NUM>. For example, the magnetic component <NUM> can be a permanent magnetic. However, the present invention is not limited thereto. Preferably, the driving module <NUM> can be an electromagnetic module and further includes an accommodating shell <NUM>, a metal rod <NUM>, a coil <NUM> and an elastic component <NUM>. For example, the metal rod <NUM> can be a ferrite core. However, the present invention is not limited thereto. The magnetic component <NUM> and the coil <NUM> are arranged inside the accommodating shell <NUM>. The metal rod <NUM> can be extended or retracted relative to the accommodating shell <NUM> by the coil <NUM> when a current flows through the coil <NUM>. The elastic component <NUM> is configured to provide an elastic force to the metal rod <NUM>. For example, the elastic component <NUM> can be a spring sleeved outside the metal rod <NUM>. However, the present invention is not limited thereto.

The slider <NUM> is connected to the metal rod <NUM>. For example, the slider <NUM> can be fixedly connected to the metal rod <NUM>. However, the present invention is not limited thereto. The latch <NUM> is movable relative to the slider <NUM>. Specifically, the latch <NUM> is movably arranged on the slider <NUM>. For example, the latch <NUM> can be pivotally connected to the slider <NUM> by a pivoting shaft <NUM>. However, the present invention is not limited thereto.

The resilient component <NUM> can provide a resilient force to the latch <NUM>. The first sensor <NUM> and the second sensor <NUM> can be electrically connected to the control circuit board <NUM>.

As shown in <FIG>, the lock device <NUM> further includes a power module <NUM>. The power module <NUM> is configured to provide electricity <NUM> to the driving module <NUM>. Preferably, the power module <NUM> is electrically connected to the control circuit board <NUM>. A communication device <NUM> is communicated with the lock device <NUM> in a wired or wireless manner for controlling the driving module <NUM>. For example, the communication device <NUM> can be a mobile phone, a tablet computer or a smart watch, and the power module <NUM> can be a battery module. However, the present invention is not limited thereto.

As mentioned above, the accessory component <NUM> and the lock device <NUM> can respectively be mounted on the second object <NUM> and the first object <NUM>, and the accessory component <NUM> and the second object <NUM> can move together. As shown in <FIG> and <FIG>, <FIG> only illustrates the accessory component <NUM> and the lock device <NUM> without the second object <NUM>, the drawer <NUM>, the first object <NUM> and the cabinet <NUM> as the second object <NUM> is located at the retracted position R, and <FIG> only illustrates the accessory component <NUM> and the lock device <NUM> without the second object <NUM>, the drawer <NUM>, the first object <NUM> and the cabinet <NUM> as the second object <NUM> is located at an extended position E.

The driving module <NUM> is configured to drive the slider <NUM>. Specifically, the driving module <NUM> is configured to drive the slider <NUM> to move between a locking position X1 as shown in <FIG> and an unlocking position X2 as shown in <FIG>. Since the slider <NUM> is connected to the metal rod <NUM>, when the power module <NUM> provides the electricity <NUM> to the driving module <NUM> to generate a current, such as a forward current or a reverse current, flowing through the coil <NUM> for driving the metal rod <NUM> to move, the slider <NUM> can be driven by a movement of the metal rod <NUM> to move to the locking position X1 as shown in <FIG> or the unlocking position X2 as shown in <FIG>.

Preferably, as shown in <FIG>, when the metal rod <NUM> drives the slider <NUM> to move to the locking position X1, the elastic component <NUM> provides the elastic force to the metal rod <NUM>, so that the slider <NUM> is retained at the locking position X1. As shown in <FIG>, when the metal rod <NUM> drives the slider <NUM> to move to the unlocking position X2, the magnetic component <NUM> magnetically attracts with the metal rod <NUM>, so that the slider <NUM> is retained at the unlocking position X2.

Preferably, a moving direction of the metal rod <NUM> and a moving direction of the slider <NUM> are perpendicular to a moving direction of the second object <NUM>. For example, the moving direction of the metal rod <NUM> and the moving direction of the slider <NUM> can be parallel to a traverse direction, and the moving direction of the second object <NUM> can be parallel to a longitudinal direction, e.g., an opening direction D1 or a retracted direction D2.

As shown in <FIG>, when the second object <NUM> is located at the retracted position R relative to the first object <NUM>, the driving module <NUM> can drive the slider <NUM> to move to the locking position X1 in a first traverse direction T1, so that the latch <NUM> can block the second object <NUM>. For example, when the slider <NUM> is located at the locking position X1, the latch <NUM> is partially inserted into the space <NUM> of the accessory component <NUM>, so that the latch <NUM> can block the first predetermined portion <NUM> of the accessory component <NUM> for preventing the second object <NUM> from moving relative to the first object <NUM> away from the retracted position R as shown in <FIG> to the extended position E in the opening direction D <NUM>.

As shown in <FIG>, the driving module <NUM> can further drive the slider <NUM> to move to the unlocking position X2 in a second traverse direction T2 opposite to the first traverse direction T1, so that the latch <NUM> cannot block the second object <NUM>. For example, when the slider <NUM> is located at the unlocking position X2, the latch <NUM> is not inserted into the space <NUM> of the accessory component <NUM>, so that the latch <NUM> cannot block the first predetermined portion <NUM> of the accessory component <NUM> for allowing the second object <NUM> to move relative to the first object <NUM> away from the retracted position R in the opening direction D1, e.g., move from the retracted position R as shown in <FIG> to the extended position E as shown in <FIG>. It should be noticed that the second object <NUM> also can retract relative to the first object <NUM> from the extended position E to the retracted position R in the retracted direction D2.

Besides, the first sensor <NUM> is configured to sense whether the second object <NUM> is located at the retracted position R. Specifically, the first sensor <NUM> can generate a first signal or a second signal. For example, when the second object <NUM> is located at the retracted position R as shown in <FIG>, a first resilient sensing portion 70a of the first sensor <NUM> can be pressed by the second object <NUM> or by the accessory component <NUM>, so that the first sensor <NUM> generates the second signal for indicating the second object <NUM> is located at the retracted position R. When the first resilient sensing portion 70a of the first sensor <NUM> is not pressed by the second object <NUM> or by the accessory component <NUM>, the first sensor <NUM> generates the first signal for indicating the second object <NUM> is not located at the retracted position R and is located at another position, such as an full open position or the extended position E as shown in <FIG>.

The second sensor <NUM> is configured to sense whether the slider <NUM> is located at the locking position X1. Specifically, the second sensor <NUM> can generate a third signal or a fourth signal. For example, when the slider <NUM> is located at the locking position X1 as shown in <FIG>, a second resilient sensing portion 72a of the second sensor <NUM> is not pressed by the slider <NUM>, so that the second sensor <NUM> generates the fourth signal for indicating the slider <NUM> is located at the locking position X1. When the second resilient sensing portion 72a of the second sensor <NUM> is pressed by the slider <NUM>, the second sensor <NUM> generates the third signal for indicating the slider <NUM> is located at the unlocking position X2 as shown in <FIG>.

As shown in <FIG>, the lock device <NUM> executes a locking process which includes the following steps:.

In step <NUM>, for example, an application (APP) can be installed on the communication device <NUM>. The locking signal can be transmitted to the lock device <NUM> via the application installed on the communication device <NUM> operated by a user.

In step <NUM>, as shown in <FIG>, the lock device <NUM> can detect whether the first sensor <NUM> generates the second signal. For example, the lock device <NUM> can detect the first sensor <NUM> generates the second signal for indicating the second object <NUM> is located at the retracted position R relative to the first object <NUM> when the first resilient sensing portion 70a is pressed by the second object <NUM> or the accessory component <NUM>.

In step <NUM>, when the second object <NUM> is located at the retracted position R relative to the first object <NUM>, i.e., the lock device <NUM> detects the first sensor <NUM> generates the second signal, and when the lock device <NUM> receives the locking signal transmitted from the communication device <NUM>, the lock device <NUM> utilizes the power module <NUM> to drive the driving module <NUM> to generate the first current for driving the slider <NUM> to move to the locking position X1, so that the latch <NUM> can block the second object <NUM>. Specifically, the metal rod <NUM> can be driven to move in accordance with the first current passing through the coil <NUM>, so that the slider <NUM> can be driven to move to the locking position X1 in response to a movement of the metal rod <NUM> in the first traverse direction T1 for allowing the latch <NUM>, which is at an original state S1 as shown in <FIG> relative to the slider <NUM>, to block the second object <NUM>. The first current can be a reverse current. However, the present invention is not limited thereto.

In step <NUM>, when the second object <NUM> is not located at the retracted position R relative to the first object <NUM>, i.e., the lock device <NUM> detects the first sensor <NUM> does not generate the second signal, the communication device <NUM> can generate a notification sound or message for notifying the user that the second object <NUM> is not located at the retracted position R, i.e., the drawer <NUM> is not closed completely.

Furthermore, step <NUM> can be executed after step <NUM>. In step <NUM>, when the driving module <NUM> generates the first current for driving the slider <NUM> to move to the locking position X1, the lock device <NUM> can detect whether the second sensor <NUM> generates the fourth signal. For example, the lock device <NUM> can detect the second sensor <NUM> generates the fourth signal for indicating the slider <NUM> is located at the locking position X1 when the second resilient sensing portion 72a of the second sensor <NUM> is not pressed by the slider <NUM>.

In step <NUM>, when the lock device <NUM> detects the second sensor <NUM> generates the fourth signal, which means the slider <NUM> is located at the locking position X1 and the latch <NUM> blocks the second object <NUM> for preventing the second object <NUM> from moving away from the retracted position R as shown in <FIG> in the opening direction D1 relative to the first object <NUM>, the lock device <NUM> utilizes the communication device <NUM> to indicate the drawer <NUM> cannot be opened.

In step <NUM>, when the lock device <NUM> detects the second sensor <NUM> does not generate the fourth signal, which means the slider <NUM> is not located at the locking position X1, the lock device <NUM> utilizes the communication device <NUM> to generate a first error notification, such as an error notification sound or message, for notifying the user that the slider <NUM> is not located at the locking position X1 properly.

As shown in <FIG>, the lock device <NUM> executes an unlocking process which includes the following steps:.

In step <NUM>, the unlocking signal can be transmitted to the lock device <NUM> via the application installed on the communication device <NUM> operated by the user.

In step <NUM>, when the lock device <NUM> receives the unlocking signal transmitted from the communication device <NUM> to unlock the drawer <NUM>, the lock device <NUM> utilizes the power module <NUM> to drive the driving module <NUM> to generate the second current for driving the slider <NUM> to move to the unlocking position X2, so that the latch <NUM> cannot block the second object <NUM>. Specifically, the metal rod <NUM> can be driven to move in accordance with the second current passing through the coil <NUM>, so that the slider <NUM> can be driven to move to the unlocking position X2 in response to a movement of the metal rod <NUM> in the second traverse direction T2 for allowing the latch <NUM>, which is located at the original state S1 as shown in <FIG> relative to the slider <NUM>, not to block the second object <NUM>. It should be noticed that when lock device <NUM> is switched from a state as shown in <FIG> to a state as shown in <FIG>, the latch <NUM> is retained at the original state S1 relative to the slider <NUM>, i.e., a position of the latch <NUM> relative to the slider <NUM> is unchanged but is moved relative to the second object <NUM> from an engaging position to a disengaging position. The second current can be a forward current. However, the present invention is not limited thereto.

In step <NUM>, as shown in <FIG>, the lock device <NUM> can detect whether the second sensor <NUM> generates the third signal. For example, the lock device <NUM> can detect the second sensor <NUM> generates the third signal for indicating the slider <NUM> is located at the unlocking position X2 when the second resilient sensing portion 72a of the second sensor <NUM> is pressed by the slider <NUM>.

In step <NUM>, when the lock device <NUM> detects the second sensor <NUM> generates the third signal, which means the slider <NUM> is located at the unlocking position X2 and the latch <NUM> does not block the second object <NUM>, the lock device <NUM> utilizes the communication device <NUM> to indicate the drawer <NUM> can be opened.

In step <NUM>, when the lock device <NUM> detects the second sensor <NUM> does not generate the third signal, which means the slider <NUM> is not located at the unlocking position X2, the lock device <NUM> utilizes the communication device <NUM> to generate the second error notification, such as another error notification sound or message, for notifying the user that the slider <NUM> is not located at the unlocking position X2 properly.

When the driving module <NUM> is not driven by the power module <NUM>, e.g., when the power module <NUM> fails to drive the driving module <NUM> due to a damage of the power module <NUM>, or empty or lack of electricity of the power source <NUM>, and when the slider <NUM> is located at the locking position X1, the latch <NUM> can be driven by a movement of the second object <NUM> from the retracted position R as shown in <FIG> to a predetermined position Y as shown in <FIG> in the opening direction D1 to move relative to the slider <NUM> from the original state S1 as shown in <FIG> to a non-original state S2 as shown in <FIG> for driving the slider <NUM> to move from the locking position X1 as shown in <FIG> to the unlocking position X2 as shown in <FIG>. For example, the latch <NUM> can be abutted by the first predetermined portion <NUM> of the accessory component <NUM> to rotate in a predetermined direction K by a predetermined angle for driving or pushing the slider <NUM> to move from the locking position X1 as shown in <FIG> to the unlocking position X2 as shown in <FIG> in the second traverse direction T2. Furthermore, when the latch <NUM> is located at the non-original state S2 relative to the slider <NUM>, the resilient component <NUM> is resiliently deformed to generate the resilient force.

Preferably, the accessory component <NUM> further includes an abutting portion <NUM> located in the space <NUM> and adjacent to the first predetermined portion <NUM>. The abutting portion <NUM> can be a concave groove structure. However, the present invention is not limited thereto. The abutting portion <NUM> can engage with the latch <NUM> for facilitating the latch <NUM> to drive the slider <NUM> to move from the locking position X1 to the unlocking position X2 by overcoming the elastic force provided by the elastic component <NUM> when the latch <NUM> rotates relative to the slider <NUM> from the original state S <NUM> to the non-original state S2.

Preferably, as shown in <FIG>, when the slider <NUM> is located at the unlocking position X2, the slider <NUM> can be retained at the unlocking position X2 by the magnetic component <NUM> of the driving module <NUM>. For example, the magnetic component <NUM> can magnetically attract with the metal rod <NUM> to retain the slider <NUM> at the unlocking position X2. The slider <NUM> includes a guiding portion <NUM>. The guiding portion <NUM> can include an inclined surface. However, the present invention is not limited thereto. The latch <NUM> can rotate to abut against the guiding portion <NUM> of the slider <NUM>. Therefore, an acting force acting on the drawer <NUM> for opening the drawer <NUM> can be transmitted to the slider <NUM> by the guiding portion <NUM>, so as to restrain the second object <NUM> from moving away from the predetermined position Y as shown in <FIG> in the opening direction D1.

As shown in <FIG> and <FIG>, the second object <NUM> cannot move away from the predetermined position Y in the opening direction D1 but can move in the retraced direction D2. Specifically, when the slider <NUM> is retained at the unlocking position X2 and the second object <NUM> moves from the predetermined position Y as shown in <FIG> to a position as shown in <FIG> in the retracted direction D2, the latch <NUM> is driven to move relative to the slider <NUM> from the non-original state S2 to the original state S1 as shown in <FIG>, i.e., the latch <NUM> is moved relative to the second object <NUM> back to the disengaging position, in response to the resilient force provided by the resilient component <NUM>, so that the latch <NUM> does not block the first predetermined portion <NUM> of the accessory component <NUM> for allowing the second object <NUM> to move to the extended position E as shown in <FIG> or the full open direction in the opening direction D <NUM>.

However, the present invention is not limited to the aforementioned embodiment. For example, in another embodiment, the first object and the second object can be the cabinet and the drawer respectively, and the lock device can be mounted on the cabinet and utilizes the latch to detachably engage with the accessory component, which can be integrally formed with or detachably mounted on the drawer, for locking the drawer. In another embodiment, it is not required to receive the locking signal transmitted from the communication device for locking the drawer, e.g., the lock device can utilizes the power module to drive the driving module to generate the first current for driving the slider to move to the locking position when the lock device detects the firs sensor generates the second signal for indicating the second object is located at the retracted position relative to the first object. In another embodiment, the first sensor and the second sensor can be a first non-contact sensor and a second non-contact sensor. The first non-contact sensor can be a first light sensor including a first light emitting component disposed on the first object, a first light receiving component disposed on the first object and a first light reflecting component disposed on the second object for reflecting light emitted from the first light emitting component to the first light receiving component when the second object is located at the retracted position, and the second non-contact sensor can be a second light sensor including a second light emitting component disposed on the first object, a second light receiving component disposed on the first object and a second light reflecting component disposed on the slider for reflecting light emitted from the second light emitting component to the second light receiving component when the slider is located at the locking position.

From the above, the lock device <NUM> includes the following feature: when a power failure or a damage of an electronic component of the lock device <NUM> occurs, a user only has to pull the second object <NUM> to move by a distance in the opening direction D1 to move the slider <NUM> to move from the locking position X1 to the unlocking position X2, so that a manual unlocking function can be performed. The present invention does not require any additional manual mechanism. Therefore, the present invention has better utilization convenience and improved aesthetic appearance.

Claim 1:
A lock device (<NUM>) adapted for a first object (<NUM>) and a second object (<NUM>) movable relative to the first object (<NUM>), the lock device (<NUM>) comprising:
a slider (<NUM>);
a driving module (<NUM>) configured to drive the slider (<NUM>) to move between a locking position (X1) and an unlocking position (X2);
a latch (<NUM>) movably arranged on the slider (<NUM>); and
a power module (<NUM>) configured to provide electricity to the driving module (<NUM>);
wherein when the second object (<NUM>) is located at a retracted position (R) relative to the first object (<NUM>), the driving module (<NUM>) is configured to drive the slider (<NUM>) to move to the locking position (X1), so that the latch (<NUM>) is able to block the second object (<NUM>);
wherein when the driving module (<NUM>) is not driven by the power module (<NUM>) in a situation where there is a power failure or a damage of an electronic component, the latch (<NUM>) is able to be driven by a movement of the second object (<NUM>) to a predetermined position (Y) in an opening direction (D1) to move from an original state (S1) to a non-original state (S2) for driving the slider (<NUM>) to move from the locking position (X1) to the unlocking position (X2);
wherein the driving module (<NUM>) comprises a magnetic component (<NUM>) configured to retain the slider (<NUM>) at the unlocking position (X2) when the slider (<NUM>) is located at the unlocking position (X2);
the lock device (<NUM>) is characterized by a resilient component (<NUM>), such that when the slider (<NUM>) is retained at the unlocking position (X2) in the situation where there is the power failure or the damage of the electronic component, a movement of the second object (<NUM>) from the predetermined position (Y) in a retracted direction (D2) is able to cause the latch (<NUM>) to move from the non-original state (S2) to the original state (S1) in response to a resilient force provided by the resilient component (<NUM>) for allowing the second object (<NUM>) to move to an extended position (E) in the opening direction (D1).