CN117248792A - Locking and unlocking actuating mechanism for household appliance door - Google Patents
Locking and unlocking actuating mechanism for household appliance door Download PDFInfo
- Publication number
- CN117248792A CN117248792A CN202211529341.9A CN202211529341A CN117248792A CN 117248792 A CN117248792 A CN 117248792A CN 202211529341 A CN202211529341 A CN 202211529341A CN 117248792 A CN117248792 A CN 117248792A
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- CN
- China
- Prior art keywords
- locking
- door
- block
- latch arm
- household appliance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000000926 separation method Methods 0.000 claims description 23
- 238000005406 washing Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
- E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
The invention discloses a locking and unlocking actuating mechanism for a household appliance door, which comprises a bottom shell, a latch arm, a locking block and a driving mechanism, wherein the bottom shell is provided with a locking groove; the latch arms comprise first latch arms and second latch arms, and the first latch arms and the second latch arms are symmetrically hinged on the bottom shell; the device is characterized in that the upper surface of the locking block is provided with a guide groove, a separating block is arranged in the guide groove, and locking grooves are formed at two sides of the separating block; the bottom surfaces of the first latch arm and the second latch arm are provided with locking columns, and the locking columns slide in the guide grooves; the driving mechanism drives the locking block to move. The locking and unlocking actuating mechanism for the household appliance door has the advantages of simple structure, high reliability and strong fault tolerance, prolongs the service life of the door lock or the locking/unlocking mechanism, and can be widely applied to household appliances such as dish washers, washing machines, refrigerators and the like.
Description
Technical Field
The invention belongs to the technical field of household appliance door locks, and particularly relates to a locking and unlocking actuating mechanism for a household appliance door.
Background
In the working process of household appliances such as dish washing machines, washing machines and the like, door locking and locking are generally realized by adopting a mode of matching door buckles and door locks. The door catch and the door lock are respectively arranged on the door and the main body of the household appliance. The door lock is provided with a latch arm, the latch arm is overcome by the elastic force in the process of opening the door, so that the door is separated from the door catch, and the door is opened. In the closing process, the latch arms move relative to the door catch, and finally the door catch is pressed under the action of elasticity, so that the closing effect is achieved. Locking mechanisms are also commonly employed to achieve a locking effect.
At present, the locking mechanism of the household appliance door is mainly realized by limiting the rotation of the latch arm, but the adopted structure has some problems. For example, chinese patent application publication No. CN112842213a discloses a safety door lock and a dishwasher with the same. The safety door lock disclosed in the patent application is characterized in that the latch arm is limited to rotate by the movement of the limiting block. However, one end of the limiting block is a free end, the stress on the fixed end is larger, and the limiting block and a driving mechanism of the limiting block are easy to damage. And the locking function may be affected by wear of the latch arms, resulting in an inability to lock successfully.
Disclosure of Invention
The invention aims to solve the technical problem of providing a locking and unlocking actuating mechanism for a household appliance door, which has the advantages of simple and stable structure and strong fault tolerance.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a locking and unlocking actuating mechanism for a household appliance door comprises a bottom shell, a latch arm, a locking block and a driving mechanism; the latch arms comprise a first latch arm and a second latch arm, and the first latch arm and the second latch arm are symmetrically hinged on the bottom shell; the upper surface of the locking block is provided with a guide groove, a separation block is arranged in the guide groove, and locking grooves are formed in two sides of the separation block; the bottom surfaces of the first latch arm and the second latch arm are provided with locking columns, and the locking columns slide in the guide grooves; the driving mechanism drives the locking block to move.
Further, the separating block comprises a base part and an upper part, the cross section of the base part of the separating block is rectangular, and the cross section of the upper part of the separating block is polygonal.
Further, the cross section of the upper part of the separation block is triangular or trapezoidal.
In another improvement, the upper edge of the cross section of the upper part of the separation block is arc-shaped.
In another improvement, the upper edge of the cross section of the separation block is arc-shaped.
Further, the two edges of the upper part of the guide groove are narrowed towards the middle. After the door lock is unlocked, the unlocking block is continuously far away from the door catch and moves towards the upper part of the guide groove, the tail ends of the first latch arm and the second latch arm are close to each other due to the narrowing of the edges of the two sides, the head ends of the first latch arm and the second latch arm are away from each other, the door catch is automatically released, and the door is in a state which can be opened without exerting force.
Further improved, the upper profile of the guide groove is polygonal or arc-shaped.
Further, the locking post is proximate the first and second latch arm tails.
Further, the locking column is cylindrical or conical.
Furthermore, the bottom surface of the locking block is provided with a toothed plate, and the driving mechanism drives the locking block to move through the meshing transmission of the gear and the toothed plate.
The invention discloses a locking and unlocking actuating mechanism for a household appliance door, which drives a locking block to move through a driving mechanism, so that the head ends (the ends close to a door catch) of a first latch arm and a second latch arm are close to and separated from each other, and the locking and unlocking functions are realized. When the locking mechanism is unlocked, the locking column has high sliding freedom in the guide groove, and even if the first latch arm and the second latch arm are deviated in position or worn in structure due to long-term use, the normal locking and unlocking functions are not affected. The locking and unlocking actuating mechanism for the household appliance door has the advantages of simple structure, high reliability and strong fault tolerance, prolongs the service life of the door lock or the locking/unlocking mechanism, and can be widely applied to household appliances such as dish washers, washing machines, refrigerators and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of a locking and unlocking actuator for a door of a household appliance according to the present invention;
FIG. 2 is a schematic illustration of the latch arm construction of the present invention;
FIG. 3 is a perspective view of a latch arm of the present invention;
FIG. 4 is a front view of a lock block of the present invention;
FIG. 5 is a cross-sectional view of the locking block A-A of FIG. 4;
FIG. 6 is a front view of a separator block with a triangular upper cross section;
FIG. 7 is a front view of a split block with an upper edge of the upper cross section being arcuate;
FIG. 8 is a front view of a split block with an arcuate upper edge in cross section;
FIG. 9 is a perspective view of the latch arm and lock block positional relationship of the present invention;
FIG. 10 is a schematic diagram of the state of the locking and unlocking actuators when the door of the dishwasher is unlocked in an embodiment;
FIG. 11 is a schematic diagram of the state of the locking and unlocking actuators when the dishwasher door is unlocked in an embodiment;
FIG. 12 is a schematic diagram of the state of the locking and unlocking actuators during the locking process of the dishwasher in an embodiment;
fig. 13 is a schematic view showing the state of the locking and unlocking actuator during the release of the door latch of the dishwasher according to the embodiment.
In the figure, 1-bottom shell, 2-first latch arm, 3-locking block, 31-guide slot, 311-locking slot, 312-guide slot upper portion, 3121-guide slot upper portion outline, 32-separation block, 321-separation block base portion, 322-separation block upper portion, 4-second latch arm, 5-locking post, 6-motor, 7-first drive gear, 8-second drive gear, 9-drive shaft, 10-toothed plate, door latch 11.
Detailed Description
The following describes in detail a locking and unlocking actuator for a door of a household appliance according to the present invention, with reference to the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "left", "right", "upper", "lower", "bottom", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and "first", "second", etc. do not represent the importance of the parts and thus are not to be construed as limiting the present invention. The specific dimensions and numerical values adopted in the embodiment are only for illustrating the technical scheme, and do not limit the protection scope of the invention. The following embodiments take the safety door lock of the present invention as an example for a dishwasher, but it should be noted that the safety door lock of the present invention is not limited to be applied to a dishwasher.
The embodiment takes a locking and unlocking executing mechanism applied to a dish washer as an example, and describes the locking and unlocking executing mechanism for a household appliance door. As shown in fig. 1, a locking and unlocking actuator for a door of a home appliance includes a bottom case 1, a latch arm, a locking block 3, and a driving mechanism. As shown in fig. 1 and 2, the latch arms include a first latch arm 2 and a second latch arm 4, the first latch arm 2 and the second latch arm 4 are symmetrically hinged on the bottom case 1, and the first latch arm 2 and the second latch arm 4 may be connected by a spring. The upper surface of the locking block 3 is provided with a guide groove 31, a separating block 32 is arranged in the guide groove 31, and locking grooves 311 are arranged on two sides of the separating block. The bottom surfaces of the first latch arm 2 and the second latch arm 4 are provided with locking posts 5, as shown in fig. 9, the locking posts 5 being slidable in the guide grooves 31, and of course, the latch arm bottom surfaces are higher than the upper surfaces of the separation blocks 32. In order to enable the locking post 5 to slide in the locking groove 311 and be stable after locking, the outer diameter of the locking post 5 is slightly smaller than the width of the locking groove 311. The driving mechanism drives the locking block 3 to move.
In the present invention, the outer portion of the separation block 32 may be provided in various shapes, and the locking post 5 may be slid in the guide groove 311 and finally stably seated in the locking groove 311 at the time of locking. In fact, the shape of the side of the separation block base 321 determines the shape of the locking groove 311. Generally, the locking groove 311 is most suitably rectangular in cross-section, in which case the locking post 5 is most stable in the locking groove 311. For example, as shown in fig. 4 and 5, the separating block 32 includes a base portion 321 and an upper portion 322, the cross section of the base portion 321 of the separating block is rectangular, the cross section of the upper portion of the separating block 322 is polygonal, preferably, the cross section of the upper portion 322 of the separating block is trapezoidal, the shorter side of the trapezoid is upper, and the longer side is lower. Alternatively, as shown in FIG. 6, the upper portion 322 of the separator block may be triangular in cross-section. Of course, the upper edge of the cross section of the upper portion 322 of the separation block may be curved, as shown in fig. 7, and the upper edge of the cross section of the upper portion of the separation block is semicircular. The separating block 32 may be formed without separating the base portion and the upper portion, and as shown in fig. 8, the upper edge of the cross section of the separating block 32 is arc-shaped, preferably semi-circular. The lower edge of the separation block 32 may be integrally connected to the lock block 3, or a gap may be provided, and the width of the gap may not affect the locking.
To perform the function of an automatic release door, both sides of the guide groove upper portion 312 are narrowed toward the middle. After the door lock is unlocked, the unlocking block 3 continues to move away from the door catch 11 and moves towards the upper portion 312 of the guide groove, the tail ends of the first latch arm 1 and the second latch arm 4 are close to each other due to the narrowing edges of the two sides, the head ends of the first latch arm 1 and the second latch arm 4 are away from each other, the door catch 11 automatically releases, namely, the door is automatically released, and at the moment, the door is in a state which can be opened without force.
The guide channel upper profile 3121 is trapezoidal (without a bottom edge) as shown in fig. 4, which is a common manner in which the edges narrow toward the middle. Of course, the guide channel upper profile 3121 is polygonal, generally narrowing, and may be more smoothly curved, including semi-circular.
Preferably, as shown in fig. 3 and 9, the locking post 5 is located near the ends of the first latch arm 2 and the second latch arm 4 (the end being the end near the locking block 3). The locking post 5 is generally cylindrical or conical in shape and is easily slid within the locking groove 311.
The driving mechanism drives the locking block to move and basically reciprocate in a straight line, and various transmission modes can be adopted, such as gear transmission, belt transmission, hydraulic transmission and the like. As shown in fig. 1 and 5, in the present embodiment, the driving mechanism employs a motor 6, and the motor 6 drives a transmission shaft 9 through a first transmission gear 7 and a second transmission gear 8. A third transmission gear (not shown in the figure) is also arranged on the transmission shaft 9, and the third transmission gear is meshed with a toothed plate 10 on the bottom surface of the locking block 3 to drive the locking block 3 to linearly reciprocate.
As shown in fig. 10, when the dishwasher is in a door-open state, the head ends of the first latch arm 2 and the second latch arm 4 are positioned below the door latch, and the locking post 5 is in the guide groove 31. As shown in fig. 11, when the dishwasher is in a state that the door is not locked, the head ends of the first and second latch arms 2 and 4 are positioned above the door catch, and the locking posts 5 are in the guide grooves 31, preferably, the tail ends of the first and second latch arms 2 and 4 are positioned at the upper left and right corners of the separating block 32, respectively. As shown in fig. 12, the motor 6 drives the locking block 3 to move upward, and the locking posts 5 gradually enter the locking grooves 311 along both sides of the separation block 32 until reaching a preset position, at which time the door of the dishwasher is locked. As shown in fig. 13, the motor 6 drives the locking block 3 to move downwards, and the locking posts 5 gradually separate from the locking grooves 311 along both sides of the separating block 32 until the locking posts 5 leave the locking grooves 311, and the door of the dishwasher is unlocked. After the door of the dish washer is unlocked, the unlocking block 3 continues to move away from the door catch 11, and moves towards the upper portion 312 of the guide groove, and as the outline 3121 of the upper portion of the guide groove is trapezoid (without bottom edge), the edges of the two sides are narrowed, the tail ends of the first latch arm 1 and the second latch arm 4 are close to each other, the head ends of the first latch arm 1 and the second latch arm 4 are away from each other, the door catch 11 is automatically released, namely, the door is automatically released, and at the moment, the door is in a state which can be opened without force.
The starting and the closing of the motor can be controlled by a preset program, or can be controlled manually or in a semi-automatic mode.
Based on the description of the preferred embodiments of the present invention, it should be clear that the invention defined by the appended claims is not limited to the specific details set forth in the above description, but that many apparent variations of the invention are possible without departing from the spirit or scope thereof.
Claims (10)
1. A locking and unlocking actuating mechanism for a household appliance door comprises a bottom shell, a latch arm, a locking block and a driving mechanism; the latch arms comprise a first latch arm and a second latch arm, and the first latch arm and the second latch arm are symmetrically hinged on the bottom shell; the device is characterized in that the upper surface of the locking block is provided with a guide groove, a separation block is arranged in the guide groove, and locking grooves are formed in two sides of the separation block; the bottom surfaces of the first latch arm and the second latch arm are provided with locking columns, and the locking columns slide in the guide grooves; the driving mechanism drives the locking block to move.
2. The locking and unlocking actuator for a door of a household appliance according to claim 1, wherein the separation block comprises a base portion and an upper portion, the cross section of the base portion of the separation block is rectangular, and the cross section of the upper portion of the separation block is polygonal.
3. The locking and unlocking actuator for a door of a household appliance according to claim 2, wherein the upper portion of the separation block has a triangular or trapezoidal cross section.
4. The locking and unlocking actuator for a door of a home appliance according to claim 2, wherein an upper edge of a cross section of an upper portion of the separation block is arc-shaped.
5. The locking and unlocking actuator for a door of a household appliance according to claim 1, wherein the upper edge of the cross section of the separation block is arc-shaped.
6. The locking and unlocking actuator for a door of a home appliance according to claim 1, wherein both edges of the upper portion of the guide groove are narrowed toward the middle.
7. The locking and unlocking actuator for a door of a home appliance according to claim 6, wherein the guide groove upper profile is polygonal or arc-shaped.
8. Locking and unlocking actuator for household appliance doors according to any of claims 1 to 7, characterized in that the locking post is cylindrical or conical.
9. The locking and unlocking actuator for a door of a household appliance of claim 8, wherein the locking post is proximate the first and second latch arm tails.
10. The locking and unlocking actuator for a door of a household appliance according to claim 8, wherein the bottom surface of the locking block is a toothed plate, and the driving mechanism is engaged with the toothed plate through a gear to drive the locking block to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211529341.9A CN117248792A (en) | 2022-12-01 | 2022-12-01 | Locking and unlocking actuating mechanism for household appliance door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211529341.9A CN117248792A (en) | 2022-12-01 | 2022-12-01 | Locking and unlocking actuating mechanism for household appliance door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117248792A true CN117248792A (en) | 2023-12-19 |
Family
ID=89125308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211529341.9A Pending CN117248792A (en) | 2022-12-01 | 2022-12-01 | Locking and unlocking actuating mechanism for household appliance door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117248792A (en) |
-
2022
- 2022-12-01 CN CN202211529341.9A patent/CN117248792A/en active Pending
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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