Door lock device

Abstract

The present invention proposes a door lock device, including a housing, a lock hook, a rotatable lock hook installed in the housing, a door closing operation plate equipped with a reset torsion spring, and a drive plate equipped with a drive spring, the door closing operation plate is arranged on one side of the lock hook and is linked with the lock hook, the housing is also provided with a lock hole for the lock hook and the door closing operation plate to extend out, when the door cover is closed, the lock hook is driven to rotate by the door closing operation plate, one end of the lock hook is provided with an outer convex iso-arc surface, the drive plate is arranged at one end of the lock hook, the drive spring applies a force toward the lock hook to the drive plate, one end of the drive plate has an inner concave iso-arc surface, when the outer convex iso-arc surface of the lock hook is separated from the inner concave iso-arc surface, under the action of the drive spring, the drive plate applies a force to assist the lock hook in closing the door. The door lock device has a small door closing force, is easy to operate, and can improve the user's operating experience.

Description

[Technical field]

[0001] The invention relates to the technical field of door locks, in particular to a door lock device for a dishwasher. [Background technology]

[0002] At present, the door covers of household appliances, especially dishwashers, have high-temperature hot water in the cavity of the dishwasher during the washing process, and the spray arm of the dishwasher has a large spray force when working. In order to ensure the sealing effect during the working process and prevent hot water from splashing when the door cover is opened abnormally, a door lock device is installed. After closing the door, the locking force provided by the door lock device keeps the door cover closed. When the door needs to be opened, the user can overcome the locking force of the door lock to open it. Smaller closing force, door closing sound prompt after the door closing is triggered, locking force after closing, and door closing reset function after false triggering can all provide users with a good operating experience. Now a door lock device with a good door closing operation feel is proposed. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a door lock device which has a small door closing force, is easy to operate, and can improve the user's operating experience.

[0004] To achieve the above-mentioned purpose, the present invention provides a door lock device, including a shell and a lock hook, wherein a rotatable lock hook is installed in the shell, a lock hole is provided on the shell for one end of the lock hook to extend out, and the lock hook can be locked in cooperation with the lock groove of the door cover, and a door operation plate, a drive plate and a drive spring are also provided in the shell, and a reset torsion spring is arranged on the door closing operation plate, the door closing operation plate is arranged on one side of the lock hook and is linked with the lock hook, when the door cover is closed, the lock hook is driven to rotate by the door closing operation plate and locked in cooperation with the lock groove, one end of the lock hook is provided with an outer convex iso-arc surface, the drive plate is arranged at the end of the lock hook with the outer convex iso-arc surface, and is provided with a drive spring, the drive spring applies a force to the drive plate toward the lock hook, and the drive plate has an inner concave iso-arc surface at one end facing the lock hook, and when the outer convex iso-arc surface of the lock hook is separated from the inner concave iso-arc surface, under the action of the drive spring, the drive plate applies a force to the lock hook toward the lock hook to abut against the auxiliary door closing.

[0005] Preferably, a first door closing trigger unit is provided on the side of the lock hook facing the door closing operating plate, and a second door closing trigger unit is provided on the side of the door closing operating plate facing the lock hook. The reset torsion spring provides a reset force for the door closing operating plate to drive the second door closing trigger unit away from the first door closing trigger unit. When the door cover abuts against the door closing operating plate, a force is applied to the door closing operating plate to drive the second door closing trigger unit to approach the first door closing trigger unit. The door closing operating plate cooperates with the first door closing trigger unit through the second door closing trigger unit to drive the lock hook to rotate.

[0006] Preferably, the drive plate has a mounting cavity for accommodating a drive spring, the drive plate has a drive surface at one end facing the lock hook, and a concave iso-arc surface is provided on one side of the drive surface close to the lock hole.

[0007] Preferably, the end of the lock hook facing away from the outwardly convex arc surface has a locking portion, and the lock hook is locked with the lock groove of the door cover through the locking portion.

[0008] Preferably, a sliding groove for moving the lock hook is further provided in the shell, and the lock hook is movably installed in the sliding groove through a supporting shaft. A sliding inclined surface is provided on the sliding groove, and the lower end of the sliding inclined surface has a fixed groove. A driving protrusion is also provided on the outer side of the lock groove of the door cover. When the driving protrusion of the door cover abuts against the lock hook and applies a force to compress the driving spring to the lock hook, the supporting shaft of the lock hook is disengaged from the fixed groove and moves toward the higher end along the sliding inclined surface.

[0009] Beneficial effects of the present invention:

[0010] 1. When the door cover is closed, after the outer convex arc surface of the lock hook is separated from the inner concave arc surface of the driving plate, the driving plate can apply horizontal force to the lock hook to assist in closing the door, thereby reducing the closing force and improving the user experience.

[0011] 2. When the door cover is closed, the outer convex arc surface of the lock hook is separated from the inner concave arc surface of the driving plate, and the lock hook rotates rapidly under the action of the driving plate until the locking part contacts the lock groove and produces a knocking sound to remind the user that the door is closed and the closing action can be stopped.

[0012] 3. When the lock hook is triggered by mistake and the door is closed again, the lock hook moves to the upper left under the action of the door cover until it enters the lock slot and then automatically resets, ensuring that the door can be opened normally again without the need for after-sales maintenance.

[0013] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 It is a bottom view schematic diagram of the internal structure of the present invention;

[0015] Figure 2 is a cross-sectional schematic diagram of the lock hook of the present invention in the door open state;

[0016] Figure 3 is a cross-sectional schematic diagram of the door closing operating panel of the present invention in the door open state;

[0017] Figure 4 is a cross-sectional schematic diagram of the door closing operating panel of the present invention when the door is closed;

[0018] Figure 5is a cross-sectional schematic diagram of the lock hook of the present invention when the door is closed;

[0019] Figure 6 is a cross-sectional schematic diagram of the lock hook of the present invention in a door-closed state;

[0020] Figure 7 is a cross-sectional schematic diagram of the lock hook of the present invention when the door is opened;

[0021] Figure 8 It is a cross-sectional schematic diagram of the lock hook of the present invention moving to the upper left when the door is closed in an abnormal state;

[0022] Fig. 9 It is a cross-sectional schematic diagram of the lock hook of the present invention in the lower right reset state when the door is closed in an abnormal state. [Specific implementation method]

[0023] See also Figures 1 to 7 The present invention provides a door lock device, comprising a housing 1 and a lock hook 2. A rotatable lock hook 2 is installed in the housing 1. A lock hole 13 is provided on the housing 1 for the lock hook 2 and one end of a door closing operation plate 3 to extend out. The lock hook 2 can be locked with a lock groove 101 of a door cover 10. A door closing operation plate 3, a driving plate 4 and a driving spring 5 are also provided in the housing 1. A reset torsion spring 30 is provided on the door closing operation plate 3. The door closing operation plate 3 is arranged on one side of the lock hook 2 and is linked with the lock hook 2. When the door cover 10 is closed, the lock hook 2 is driven by the door closing operation plate 3. The hook 2 rotates and locks with the lock groove 101. One end of the lock hook 2 is provided with an outer convex equi-arc surface 22. The drive plate 4 is arranged at the end of the lock hook 2 with the outer convex equi-arc surface 22, and is equipped with a drive spring 5. The drive spring 5 applies a force on the drive plate 4 toward the lock hook 2. The end of the drive plate 4 facing the lock hook 2 has a concave equi-arc surface 42. When the outer convex equi-arc surface 22 of the lock hook 2 is disengaged from the concave equi-arc surface 42, under the action of the drive spring 5, the drive plate 4 applies a force on the lock hook 2 toward the lock hook 2 to assist in closing the door.

[0024] Further, see Figure 3 and Figure 4 A first door closing trigger unit 21 is provided on the side of the lock hook 2 facing the door closing operating plate 3, and a second door closing trigger unit 31 is provided on the side of the door closing operating plate 3 facing the lock hook 2. The reset torsion spring 30 provides a reset force for the door closing operating plate 3 to drive the second door closing trigger unit 31 away from the first door closing trigger unit 21. When the door cover 10 abuts against the door closing operating plate 3, a force is applied to the door closing operating plate 3 to drive the second door closing trigger unit 31 to approach the first door closing trigger unit 21. The door closing operating plate 3 cooperates with the first door closing trigger unit 21 through the second door closing trigger unit 31 to drive the lock hook 2 to rotate.

[0025] Further, see Figure 2 The drive plate 4 has an installation cavity for accommodating a drive spring 5. One end of the drive spring 5 is connected to the housing 1, and the other end is installed in the installation cavity. The end of the drive plate 4 facing the lock hook 2 has a drive surface 41, and the side of the drive surface 41 close to the lock hole 13 is provided with a concave equi-arc surface 42.

[0026] Further, see Figure 2 The lock hook 2 has a locking portion 23 at one end facing away from the outwardly convex arc surface 22 , and the lock hook 2 is locked with the lock slot 101 of the door cover 10 through the locking portion 23 .

[0027] Further, see Figure 2 , Figure 8 and Fig. 9 In this embodiment, a sliding groove 11 for the lock hook 2 to move is further provided in the shell 1, and the lock hook 2 is movably installed in the sliding groove 11 through a support shaft 20. Specifically, a sliding inclined surface 12 is provided on the sliding groove 11, and the lower end of the sliding inclined surface 12 has a fixed groove 120. A driving protrusion 102 is also provided on the outer side of the lock groove 101 of the door cover 10. When the driving protrusion 102 of the door cover 10 abuts against the lock hook 2 and applies a force to compress the drive spring 5 to the lock hook 2, the support shaft 20 of the lock hook 2 is disengaged from the fixed groove 120 and moves toward the higher end along the sliding inclined surface 12.

[0028] Working process of the present invention:

[0029] 1. Door opening status: see Figure 2 Under the action of the driving spring 5, the lock hook 2 moves rightward along the sliding groove 12 to the limit position where the fixed groove 120 is located, and the convex equi-arc surface 22 of the lock hook 2 contacts the concave equi-arc surface 42 of the driving plate 4. At this time, the rotational torque of the lock hook 2 is 0, and due to the existence of friction, the lock hook 2 is fixed in the door opening position.

[0030] 2. Door opening status: see Figure 3 , the door closing operating plate 3 is in the reset position under the action of the reset torsion spring 30, and its second door closing trigger unit 31 and the first door closing trigger unit 21 of the lock hook 2 are in a disengaged state.

[0031] 3. Door closing action: see Figure 4 and Figure 5When the door cover 10 is closed, the door cover 10 drives the door closing operating plate 3 to rotate, and the second door closing trigger unit 31 of the door closing operating plate 3 drives the lock hook 2 to rotate, overcoming the friction of the concave equi-arc surface 42. When the convex equi-arc surface 22 of the lock hook 2 is separated from the concave equi-arc surface 42 of the driving plate 4, the driving plate 4 applies a horizontal force to the lock hook 2, and the lock hook 2 rotates under the action of this force. The lock hook 2 quickly enters the lock groove 101 of the door cover 10 until the locking part 23 contacts the lock groove 101, generating a door closing impact sound, and assisting in closing the door during the subsequent rotation process.

[0032] 4. Closed state: see Figure 6 Under the action of the driving spring 5, the lock hook applies a force to the door cover 10 to continuously close the door.

[0033] 5. Door opening action: see Figure 7 When opening the door, the door cover 10 pulls out the lock hook 2 until the outer convex arc surface 22 of the lock hook 2 contacts and maintains the driving plate 4. (Same as the door opening state)

[0034] 6. Closing the door in abnormal state: see Figure 8 and Fig. 9 When the lock hook 2 is triggered by mistake and the door is closed again, the lock hook 2 moves to the upper left along the sliding slope 12 under the action of the door cover 10, and the height of the lock hook 2 relative to the door cover 10 becomes lower until it is lower than the door cover 10. At this time, the lock hook 2 enters the lock slot 101 to close the door. When the door is opened again, the same action as the door opening is resumed to normal.

[0035] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A door lock device, comprising a housing (1) and a lock hook (2), wherein a rotatable lock hook (2) is mounted in the housing (1), a lock hole (13) is provided on the housing (1) for one end of the lock hook (2) to extend out, and the lock hook (2) can be locked in cooperation with a lock groove (101) of a door cover (10), characterized in that: The housing (1) is further provided with a door closing operation plate (3), a drive plate (4) and a drive spring (5). The door closing operation plate (3) is provided with a return torsion spring (30). The door closing operation plate (3) is provided on one side of the lock hook (2) and is linked with the lock hook (2). When the door cover (10) is closed, the lock hook (2) is driven to rotate by the door closing operation plate (3) and is locked with the lock groove (101). One end of the lock hook (2) is provided with an outer convex equi-arc surface (22). The drive plate (4) is provided at one end of the lock hook (2) having the outer convex equi-arc surface (22) and is provided with a drive spring (5). The spring (5) applies a force on the drive plate (4) to abut against the lock hook (2); one end of the drive plate (4) facing the lock hook (2) has an inner concave iso-arc surface (42); when the outer convex iso-arc surface (22) of the lock hook (2) is separated from the inner concave iso-arc surface (42), under the action of the drive spring (5), the drive plate (4) applies a force on the lock hook (2) to abut against the lock hook (2) to assist in closing the door; a first door closing trigger unit (21) is provided on a side of the lock hook (2) facing the door closing operating plate (3); and a second door closing trigger unit (31) is provided on a side of the door closing operating plate (3) facing the lock hook (2). 1), the reset torsion spring (30) provides a reset force for the door closing operating plate (3) to drive the second door closing trigger unit (31) away from the first door closing trigger unit (21), and when the door cover (10) abuts against the door closing operating plate (3), a force is applied to the door closing operating plate (3) to drive the second door closing trigger unit (31) to approach the first door closing trigger unit (21), and the door closing operating plate (3) cooperates with the first door closing trigger unit (21) through the second door closing trigger unit (31) to drive the lock hook (2) to rotate, and a sliding groove (11) for allowing the lock hook (2) to move is also provided in the housing (1), The lock hook (2) is movably mounted in the sliding groove (11) via a support shaft (20); the sliding groove (11) is provided with a sliding inclined surface (12); the lower end of the sliding inclined surface (12) has a fixed groove (120); the outer side of the lock groove (101) of the door cover (10) is also provided with a driving protrusion (102); when the driving protrusion (102) of the door cover (10) abuts against the lock hook (2) and applies a force to the lock hook (2) to compress the driving spring (5), the support shaft (20) of the lock hook (2) is disengaged from the fixed groove (120) and moves toward the upper end along the sliding inclined surface (12).

2. A door lock device according to claim 1, characterized in that: The drive plate (4) has a mounting cavity for accommodating a drive spring (5), and one end of the drive plate (4) facing the lock hook (2) has a drive surface (41), and a concave iso-arc surface (42) is provided on one side of the drive surface (41) close to the lock hole (13).

3. A door lock device according to claim 1, characterized in that: The end of the lock hook (2) facing away from the outwardly convex iso-arc surface (22) has a locking portion (23), and the lock hook (2) is locked in cooperation with the locking groove (101) of the door cover (10) through the locking portion (23).

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