A safety door lock and a household appliance with the same

Abstract

This utility model discloses a security door lock and a household appliance with a security door lock. The security door lock includes a base shell, a door hook, a clamping cam, a locking slider, and a locking pin. The base shell includes a lock opening. The clamping cam is rotatable around the base shell. The locking slider is directly or indirectly connected to the clamping cam. The locking pin is used to restrict the movement of the locking slider. The locking slider includes a locking hole. When the locking pin is inserted into the locking hole, the security door lock is locked. At least one surface of the locking hole that contacts the locking pin is beveled. This utility model discloses a security door lock and a household appliance with a security door lock. In the locked state, the door can be opened with a certain force, expanding the application scenarios of the household appliance, increasing its functionality, and improving the user experience.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, specifically a security door lock and a household appliance with a security door lock. Background Technology

[0002] For safety reasons, many household appliances use door locks to secure the working chamber during use, preventing injury to the user or disruption of the appliance's normal operation if the door is accidentally opened. For example, Chinese invention patent CN114108256A discloses a latch (equivalent to a door lock) that prevents the door from opening while the appliance is in operation. Current door lock structures, such as... Figures 1 to 3 As shown, the locking slider 104 is completely restricted by the locking pin 105, preventing the door lock from opening. However, some household appliances, such as dryers, require a relatively low opening force when not in operation for ease of use. On the other hand, they require a higher opening force during operation to prevent clothes from forcing the door open. Furthermore, even with the high opening force during operation, the dryer still needs to allow the customer to manually open the door to add clothes. The door lock must allow the household appliance to be manually opened and closed a certain number of times under high opening force without damaging the lock or affecting its basic functions. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a safety door lock and a household appliance with a safety door lock. The safety door lock and the household appliance with a safety door lock can change the opening force value when the door is locked and unlocked. That is, the opening force is small when the door is unlocked and large when the door is locked.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] A security door lock includes a base shell, a door hook, a clamping cam, a locking slider, and a locking pin. The base shell includes a lock opening, the clamping cam is rotatable around the base shell, and the locking slider is connected to the clamping cam. The locking pin is used to restrict the movement of the locking slider. The locking slider includes a locking hole, and the security door lock is engaged when the locking pin is inserted into the locking hole. At least one surface of the locking hole that contacts the locking pin is an inclined surface or an arc surface at a certain angle.

[0006] Furthermore, the angle α between the inclined plane and the plane containing the bottom shell is 60 to 85°.

[0007] Furthermore, the bottom of the surface of the locking pin that contacts the locking hole is a slope or an arc surface at a certain angle.

[0008] Furthermore, the clamping cam includes a first clamping part, a second clamping part, and a clamping opening formed by the first clamping part and the second clamping part; the door hook includes a door hook hole and a door hook arm; when the first clamping part passes through the door hook hole and the clamping opening locks the door hook arm, the safety door lock is in the closed state.

[0009] Furthermore, the security door lock also includes an upper cover, and the clamping cam is hinged to the upper cover or the bottom shell.

[0010] Furthermore, a transmission slider is provided between the locking slider and the clamping cam, the transmission slider being used to convert the rotation of the clamping cam into the linear movement of the locking slider.

[0011] Furthermore, it includes a body, a door, and the aforementioned security lock, the security lock being installed on the body or the door.

[0012] This utility model discloses a security door lock and a household appliance with a security door lock. When the door lock is locked, a certain amount of force can be used to open the door, which expands the application scenarios of the household appliance, increases its functions, and improves the user experience. Attached Figure Description

[0013] Figure 1 This is the main view of the existing door lock;

[0014] Figure 2 for Figure 1 The EE-directed sectional view of the door lock shown;

[0015] Figure 3 for Figure 2 Enlarged view at position F;

[0016] Figure 4 This is a front view of the security door lock of this utility model;

[0017] Figure 5 for Figure 4 The security door lock shown is a sectional view along line AA.

[0018] Figure 6 for Figure 5 Enlarged view of position C;

[0019] Figure 7 for Figure 4 The security door lock shown is a sectional view along the BB direction.

[0020] Figure 8 This is a schematic diagram of the locking slider structure;

[0021] Figure 9 This is a schematic diagram of the combination of the locking slider, the transmission slider, and the clamping cam of this utility model.

[0022] Figure 10 for Figure 9 The DD section view of the locking slider is shown. Detailed Implementation

[0023] The following detailed description, in conjunction with the accompanying drawings, provides a detailed account of a safety door lock and a household appliance incorporating the present invention. In this description, it should be understood that terms such as "left side," "right side," "upper part," "lower part," and "bottom," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for ease of description and simplification. They do not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Terms such as "first" and "second" do not indicate the importance of components and therefore should not be construed as limitations on the present invention. The specific dimensions and values ​​used in this embodiment are merely illustrative examples and do not limit the scope of protection of the present invention. The following embodiments all use the automatic door lock of the present invention in a clothes dryer as an example; however, it should be noted that the automatic door lock of the present invention is not limited to applications in clothes dryers.

[0024] like Figure 4 and 5 As shown, a security door lock includes a base shell 1, a door hook 2, a clamping cam 3, a locking slider 4, and a locking pin 5. The base shell 1 includes a lock jaw 11. The clamping cam 3 is hinged to the base shell 1. The locking slider 4 is connected to the clamping cam 3. The locking pin 5 restricts the movement of the locking slider 4. The clamping cam 3 can rotate around the base shell 1; therefore, it can also be hinged to the upper cover of the security door lock. Figure 8 As shown, the locking slider 4 includes a locking hole 41. When the locking pin 5 is inserted into the locking hole 41, the safety door lock is locked. At least one surface of the locking hole 41 that contacts the locking pin 5 is a bevel or an arc surface at a certain angle, such as... Figure 5 and 6 As shown, the surface 411 on the left side of the locking hole 41 is a bevel. The locking pin 5 is controlled by a control system, such as an electronic control system, which is existing technology and will not be described further in this invention.

[0025] Preferred, such as Figure 5 and 6 As shown, the angle α between the inclined surface 42 on the right edge of the locking hole and the plane of the bottom shell is between 60° and 85°. It should be noted that α can be set as needed and is not limited to the aforementioned degree.

[0026] Of course, based on the inclined surface 42, the bottom of the surface of the locking pin 5 that contacts the locking hole 41 can be an inclined surface or an arc surface at a certain angle to better realize the function of this utility model. The inclined surface or the arc surface at a certain angle on the locking pin 5 can also be set separately.

[0027] like Figure 10 As shown, the clamping cam 3 includes a first clamping part 31, a second clamping part 32, and a clamping opening 33 formed by the first and second clamping parts. Figure 7 As shown, the door hook 2 includes a door hook hole 21 and a door hook arm 22. Since the clamping cam 3 is hinged to the bottom shell 1, a torsion spring or other elastic element is used to keep the clamping cam 3 deflected toward the second clamping part 32. When the first clamping part 31 passes through the door hook hole 21 and the clamping opening 33 locks the door hook arm 22, the safety door lock is in the closed state.

[0028] The locking slider 4 and the clamping cam 3 can be in direct contact and directly driven, for example... Figure 4 , 5 The locking slider 4 and clamping cam 3 of the safety door locks shown in Figures 6 and 7 are in direct contact and direct transmission. Alternatively, a transmission slider can be provided between the locking slider 4 and the clamping cam 3, such as... Figure 9 and 10 As shown, the clamping cam 3 rotates clockwise, driving the transmission slider 7, which is in contact with the clamping cam 3, to move upward. Since the transmission slider 7 and the locking slider 4 are in contact through an inclined plane, the upward movement of the transmission slider 7 pushes the locking slider 4 to move to the left. That is, the transmission slider 7 is used to convert the rotation of the clamping cam 3 into the linear movement of the locking slider 4.

[0029] When the safety door lock of this utility model is in the locked state, the locking pin is inserted into the locking hole. Referring to 5 and 8, if it is necessary to open the door, a certain force is applied to pull the door hook. The door hook pulls the clamping cam to rotate, and the rotation of the clamping cam causes the locking slider to move to the upper left. Because the locking hole and / or the bottom of the locking pin have a slope, the locking pin will move upwards, without restricting the door from being opened. The force required to open the door is limited according to functional requirements.

[0030] This utility model also discloses a household appliance with the above-mentioned safety lock, including a body, a door and the above-mentioned safety lock, wherein the safety lock is installed on the body or the door.

[0031] Based on the description of the preferred embodiments of the present invention, it should be clear that the present invention as defined by the appended claims is not limited to the specific details set forth in the above description, and many obvious changes to the present invention without departing from the spirit or scope of the present invention may also achieve the purpose of the present invention.

Claims

1. A security door lock, comprising a base shell, a door hook, a clamping cam, a locking slider, and a locking pin, wherein the base shell includes a lock jaw, the clamping cam is rotatable around the base shell, and the locking slider is connected to the clamping cam; the locking pin is used to restrict the movement of the locking slider; the locking slider includes a locking hole, and when the locking pin is inserted into the locking hole, the security door lock is locked; characterized in that, At least one of the surfaces of the locking hole that contacts the locking pin is an inclined surface or an arc surface at a certain angle.

2. The security door lock according to claim 1, characterized in that, The angle α between the inclined plane and the plane containing the bottom shell is 60 to 85°.

3. The security door lock according to claim 1, characterized in that, The bottom of the surface of the locking pin that contacts the locking hole is a slope or an arc surface at a certain angle.

4. The security door lock according to claim 1, characterized in that, The clamping cam includes a first clamping part, a second clamping part, and a clamping opening formed by the first clamping part and the second clamping part. The door hook includes a door hook hole and a door hook arm. When the first clamping part passes through the door hook hole and the clamping opening locks the door hook arm, the safety door lock is in the closed state.

5. The security door lock according to claim 1, characterized in that, The security door lock also includes an upper cover, and the clamping cam is hinged to the upper cover or the bottom shell.

6. The security door lock according to claim 1, characterized in that, A transmission slider is also provided between the locking slider and the clamping cam, the transmission slider being used to convert the rotation of the clamping cam into linear movement of the locking slider.

7. A household appliance equipped with the aforementioned security lock, characterized in that, It includes a body, a door, and a security door lock as described in any one of claims 1 to 6, wherein the security door lock is installed on the body or the door.

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