CN219220040U - Door lock structure for household appliance and household appliance - Google Patents

Abstract

The utility model relates to a door lock structure for a household appliance and the household appliance, which comprises a push rod capable of reciprocating along the length direction; the driving mechanism is in driving connection with the ejector rod; the holding box, be equipped with first locating part and second locating part along the thickness direction interval of ejector pin in the holding box, the ejector pin has two first wall surfaces that set up relatively and two second wall surfaces that set up relatively, and two first wall surfaces offset with first locating part and second locating part respectively, just be equipped with the perforation that supplies the ejector pin to pass on the lateral wall of holding box, first locating part has at least one, the second locating part has at least two that set up along the length direction interval of ejector pin. Therefore, the contact area between each first limiting piece and each second limiting piece and the ejector rod is small, and the movement resistance of the ejector rod is reduced.

Description

Door lock structure for household appliance and household appliance

Technical Field

The utility model relates to the technical field of household appliances, in particular to a door lock structure for a household appliance and the household appliance.

Background

For household appliances with functional inner cavities, such as dish washers, steam boxes, ovens and the like, a door body capable of opening or covering the opening of the box body is usually arranged at the opening of the box body due to functional requirements, and the door body needs to be locked relative to the box body through a door lock structure in the use process of the box body. The door lock device of the cleaning machine disclosed in Chinese patent publication No. CN202022033167.1 (publication No. CN 214006807U) comprises a lock tongue and a lock hook which are matched, wherein the lock tongue is arranged in a door body of the cleaning machine, and the lock hook is arranged in a groove body of the cleaning machine, and is characterized in that: the locking device further comprises a first driver for driving the locking bolt, a second driver for driving the locking hook to move up and down, and a control circuit board electrically connected with the first driver and the second driver, wherein the locking hook is provided with a locking groove facing the locking bolt, and the first driver can drive the locking bolt to move back and forth relative to the locking groove. The door lock device of the cleaning machine can automatically realize the downward pulling and pressing and the pushing action of the door body, and is more convenient to use.

However, this patent does not provide a guide structure for guiding the movement path of the latch hook (corresponding to the post rod below), and if the latch hook deviates from a predetermined path during operation, the latch hook cannot be well matched with the latch tongue on the door body, and the operational reliability is lowered.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a door lock structure for a household appliance, which can guide the moving track of a push rod according to the current state of the art.

The second technical problem to be solved by the utility model is to provide a door lock structure for a household appliance, which has small movement resistance of a push rod, aiming at the current state of the art.

The third technical problem to be solved by the utility model is to provide a household appliance applying the door lock structure aiming at the current state of the art.

The technical scheme adopted by the utility model for solving the first and second technical problems is as follows: a door lock structure for a home appliance includes

The ejector rod can reciprocate along the length direction;

the driving mechanism is in driving connection with the ejector rod;

characterized in that it also comprises

The holding box, be equipped with first locating part and second locating part along the thickness direction interval of ejector pin in the holding box, the ejector pin has two first wall surfaces that set up relatively and two second wall surfaces that set up relatively, and two first wall surfaces offset with first locating part and second locating part respectively, just be equipped with the perforation that supplies the ejector pin to pass on the lateral wall of holding box, first locating part has at least one, the second locating part has at least two that set up along the length direction interval of ejector pin.

In order to further reduce the running resistance of the ejector rod, the first limiting piece is provided with at least two limiting pieces which are arranged at intervals along the length direction of the ejector rod, and therefore the contact area between the ejector rod and the first limiting piece is small.

In order to improve the running stability of the ejector rod, the two second limiting parts are positioned on two sides of one of the first limiting parts, so that the ejector rod is stressed at multiple points along the length direction of the ejector rod, and the running stability is good.

In order to reduce the contact area of the ejector rod with the first limiting part and the second limiting part and reduce the movement resistance of the ejector rod, the cross section of the first limiting part and/or the second limiting part is annular, the axis extends along the width direction of the ejector rod, and therefore the first limiting part and the second limiting part are in line contact with the ejector rod, and the contact area is small.

In order to further reduce the friction force between the ejector rod and the first and second limiting parts and reduce the movement resistance of the ejector rod, at least one first limiting part is a wheel and is rotatably arranged on the accommodating box through a first pin shaft, and the first pin shaft extends along the width direction of the ejector rod.

At least one second limiting part is a wheel and is rotatably arranged on the accommodating box through a second pin shaft, and the second pin shaft extends along the width direction of the ejector rod. Therefore, the motion resistance of the ejector rod is small, the operation is smooth and stable, the abrasion of the ejector rod and the first and second limiting parts is small, the service life is long, the friction noise is reduced, and the user experience is improved.

In order to prevent the ejector rod from moving in the width direction, a limiting groove extending along the length direction of the first wall surface of the ejector rod is formed in the first wall surface of the ejector rod, and the first limiting piece is arranged in the limiting groove.

In order to limit the forward and backward movement stroke of the ejector rod, a first limiting block and a second limiting block are arranged on the ejector rod at intervals along the length direction of the ejector rod, a first limiting part and a second limiting part are arranged in the accommodating box at intervals along the length direction of the ejector rod, the ejector rod moves to a limit position along the reverse direction of the length direction of the ejector rod in a state that the first limiting block is propped against the first limiting part, and the ejector rod moves to the limit position along the forward direction of the length direction of the ejector rod in a state that the second limiting block is propped against the second limiting part.

Preferably, the first limiting piece and the second limiting piece are arranged at positions, close to the through holes, in the accommodating box. Therefore, one side (namely the rear side) of the ejector rod, which is far away from the perforation, does not need to be limited, and the thickness space of the household appliance at the rear side of the ejector rod can be reduced.

In order to improve the safety of the working process of the cleaning machine, a micro switch is arranged in the accommodating box, a first convex part and a second convex part which can trigger the micro switch are arranged on the ejector rod, the first convex part and the second convex part are arranged at intervals in the length direction of the ejector rod, and the door lock structure is in a locking state in a state that the micro switch is triggered by the first convex part; and in a state that the second convex part triggers the micro switch, the door lock structure is in an unlocking state. Under the condition that the first convex part triggers the micro switch, the door body is locked, and then the cleaning machine is controlled to work, so that the safety is high.

The drive mechanism can have various structural forms, such as a motor and a push rod connected with the motor drive, the push rod pushes the push rod to move, but space is reserved for the movement of the push rod, the structure is not compact enough, the push rod is provided with a tooth part extending along the length direction of the push rod, and the drive mechanism comprises the motor and a gear connected with the motor drive, and the gear is directly meshed with the tooth part or indirectly meshed with the gear through an intermediate gear. The mode of meshing the gear and the tooth part has compact structure and small occupied space.

Preferably, the tooth portion is located on one of the second wall surfaces, because two first wall surfaces of the ejector rod respectively offset with the first limiting part and the second limiting part, the tooth portion is inconvenient to set, in addition, the tooth portion is located on one of the second wall surfaces, and thus for the household appliance with an open front portion and embedded in the cabinet, the driving mechanism can be transversely arranged, the vertical space between the top of the household appliance and the cabinet is limited, and the driving mechanism of the application is small in occupied space in the vertical direction.

The structure is simplified, the tooth part is arranged on one of the first wall surfaces, and the gear is one of the first limiting parts.

In order to facilitate the mounting of the drive mechanism on the household appliance, the drive mechanism is arranged in the housing box. Therefore, the driving mechanism and the ejector rod are directly arranged in the accommodating box, the accommodating box is arranged on the household electrical appliance, the installation is convenient, and the parts of the driving mechanism are not required to be arranged on the household electrical appliance one by one.

In order to facilitate the installation of the ejector rod in the accommodating box, the accommodating box is formed by the involution of two half shells, the first limiting piece is arranged on one half shell, and the second limiting piece is arranged on the other half shell, so that after the ejector rod is installed on one half shell, the other half shell is oppositely closed, and the installation of the ejector rod in the accommodating box is realized.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: the household appliance with the door lock structure comprises an electric appliance main body and a door body, wherein one side of the electric appliance main body is open, one end of the door body is rotationally connected with the electric appliance main body, the other end of the door body can deflect towards or away from the electric appliance main body, so that the door body can open or close the opening of the electric appliance main body, the accommodating box is arranged on the outer wall surface of the electric appliance main body and is adjacent to the opening of the accommodating box, and the ejector rod can be connected with the door body.

In the above scheme, the household appliance is a cleaning machine, and the appliance main body is a box body of the cleaning machine.

Compared with the prior art, the utility model has the advantages that: according to the household appliance door, the first limiting piece and the second limiting piece are arranged in the accommodating box, the ejector rod is clamped between the first limiting piece and the second limiting piece, so that the ejector rod can only move along the track defined by the first limiting piece and the second limiting piece, the ejector rod can be ensured to be reliably matched with the door body of the household appliance, and the working reliability of the ejector rod is improved; in addition, the first locating part and the second locating part of this application are provided with at least one along the length direction interval of ejector pin, and every first locating part and every second locating part are little with the area of contact of ejector pin like this, reduce the motion resistance of ejector pin.

Drawings

FIG. 1 is a schematic view of a cleaning machine according to an embodiment 1 of the present utility model;

FIG. 2 is a schematic view of a part of the door lock structure in FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is a cross-sectional view in another direction of FIG. 2;

fig. 6 is a schematic partial structure of a door lock structure according to embodiment 2 of the present utility model;

fig. 7 is a sectional view showing a partial structure of a door lock structure according to embodiment 2 of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Example 1

As shown in fig. 1 to 5, the household appliance of the preferred embodiment comprises an appliance body 1, a door body 2 and a door lock structure a, wherein the front side of the appliance body 1 is open, the lower end of the door body 2 is rotatably connected with the appliance body 1, and the upper end of the door body 2 can deflect towards or away from the appliance body 1, so that the door body 2 opens or closes the opening of the appliance body 1, and when the door body 2 closes the opening of the appliance body 1, the door body 2 and the appliance body 1 are locked through the door lock structure a. Of course, the door lock structure of the present embodiment is also applicable to a structure with an opening top of the electric appliance main body 1, in this embodiment, the household electric appliance is a washer capable of washing tableware, the electric appliance main body 1 is a box body of the washer, and of course, the household electric appliance may be a steam box, an oven, or the like.

The door lock structure A comprises a push rod 3, a containing box 4, a first limiting part 5, a second limiting part 6, a driving mechanism 7 and the like, and of course, the door lock structure also comprises other locking structures matched with the push rod 3, the locking structures are arranged on the door body 2, and the push rod 3 is connected with the door body 2 through the locking structures. The locking structure may be any structure capable of being matched with the ejector rod 3 for locking, for example, CN202022033167.1 (publication No. CN 214006807U) of the applicant discloses a door lock device of a cleaning machine or other existing patents, and will not be described in detail herein.

The outer wall surface at the top of the electric appliance main body 1 is provided with a containing box 4, the containing box 4 is arranged adjacent to the opening of the electric appliance main body 1, a first limiting piece 5 and a second limiting piece 6 are arranged in the containing box 4 at intervals along the thickness direction of the ejector rod 3, the ejector rod 3 is provided with two first wall surfaces 3a which are oppositely arranged and two second wall surfaces 3b which are oppositely arranged, the two first wall surfaces 3a respectively prop against the first limiting piece 5 and the second limiting piece 6, and a through hole 41 for the ejector rod 3 to pass through is arranged on the side wall of the containing box 4. In other words, the first and second stoppers 5 and 6 have a space therebetween so as to form a guide rail extending in the length direction of the jack 3, and the jack 3 is movably provided in the guide rail along the length thereof.

The accommodating box 4 is not only provided with a first limiting piece 5 and a second limiting piece 6 so as to guide the moving track of the ejector rod 3; in order to facilitate assembly, the ejector rod 3 is firstly arranged in the accommodating box 4 during assembly, and then the accommodating box 4 is arranged on the household appliance. The accommodating box 4 is formed by involution of two half shells 4a, the first limiting piece 5 is arranged on one of the half shells 4a, the second limiting piece 6 is arranged on the other half shell 4a, and therefore after the ejector rod 3 is arranged on one of the half shells 4a, the other half shell 4a is involuted, and the installation of the ejector rod 3 in the accommodating box 4 is realized.

The first stopper 5 and the second stopper 6 are both provided in the housing case 4 at positions near the through holes 41. Thus, the side (i.e., the rear side) of the push rod 3 away from the through hole 41 is not limited, and the thickness space of the household appliance at the rear side of the push rod 3 can be reduced.

The cross sections of the first limiting piece 5 and the second limiting piece 6 are circular, the axis extends along the width direction of the ejector rod 3, at least one first limiting piece 5 is arranged, and at least two second limiting pieces 6 extend along the width direction of the ejector rod 3. At least one first limiting piece 5 is a wheel and is rotatably arranged on the accommodating box 4 through a first pin shaft 51, and the axis of the first pin shaft 51 extends along the width direction of the ejector rod 3; at least one second limiting piece 6 is a wheel and is rotatably arranged on the accommodating box 4 through a second pin shaft 61, and the axis of the second pin shaft 61 extends along the width direction of the ejector rod 3.

In this embodiment, the first limiting member 5 is located below the second limiting members 6, one of the first limiting members 5, two of the second limiting members 6, and two of the second limiting members 6 are located at two sides of the first limiting member 5. All the first limiting parts 5 are rollers, and all the second limiting parts 6 are rollers. Therefore, the motion resistance of the ejector rod 3 is small, the operation is smooth and stable, the abrasion of the ejector rod 3 and the first and second limiting parts 6 is small, the service life is long, the friction noise is reduced, and the user experience is improved.

The first wall surface 3a of the ejector rod 3 is provided with a limit groove 30 extending along the length direction, and the first limit piece 5 is arranged in the limit groove 30, so that the ejector rod 3 can be prevented from moving in the width direction.

The ejector rod 3 is provided with a first limiting block 31 and a second limiting block 32 at intervals along the length direction, the accommodating box 4 is provided with a first limiting part 42 and a second limiting part 43 which are arranged at intervals along the length direction of the ejector rod 3, the ejector rod 3 moves to the limit position along the reverse direction of the length direction under the state that the first limiting block 31 abuts against the first limiting part 42, and the ejector rod 3 moves to the limit position along the forward direction of the length direction under the state that the second limiting block 32 abuts against the second limiting part 43.

With the orientation of fig. 4, the longitudinal direction of the jack 3 is the front-rear direction, the first stopper 31 abuts against the first stopper 42 in a state where the jack 3 moves backward to the limit position, and the second stopper 32 abuts against the second stopper 43 in a state where the jack 3 moves forward to the limit position, so as to limit the front-rear movement stroke of the jack 3. In this embodiment, the first limiting portion 42 is a sidewall of the accommodating box 4 with a through hole 41, and the second limiting portion 43 is a limiting block disposed in the accommodating box 4.

The accommodating box 4 is internally provided with a micro switch 44, the ejector rod 3 is provided with a first convex part 33 and a second convex part 34 which can trigger the micro switch 44, the first convex part 33 and the second convex part 34 are arranged at intervals along the length direction of the ejector rod 3, and the door lock structure is in a locking state in a state that the first convex part 33 triggers the micro switch 44; in a state where the second protrusion 34 triggers the micro switch 44, the door lock structure is in an unlocked state.

As shown in fig. 3, the driving mechanism 7 is disposed in the accommodating box 4, one of the second wall surfaces 3b of the ejector rod 3 is provided with a tooth portion 35 extending along the length direction thereof, and the driving mechanism 7 includes a motor 71 and a gear 72 drivingly connected to the motor 71, the gear 72 being directly engaged with the tooth portion 35 or indirectly engaged with the gear through an intermediate gear 73.

The motor 71 works, and the gear 72 rotates to drive the ejector rod 3 to run in the track defined by the first limiting piece 5 and the second limiting piece 6.

Example 2

Example 2 differs from example 1 in that:

as shown in fig. 6 and 7, the tooth portion 35 is provided on one of the first wall surfaces 3a (lower wall surface), the driving mechanism 7 includes a motor 71 and a gear 72 drivingly connected to the motor 71, the gear 72 is directly engaged with the tooth portion 35, and the gear 72 is a first stopper. Of course, the tooth 35 may be provided on the upper wall surface of the jack 3, and the gear 72 may be a second stopper.

All the second limiting parts 6 are rollers and are rotatably arranged on the accommodating box 4 through second pin shafts 61, and the axes of the second pin shafts 61 extend along the width direction of the ejector rod 3. In this embodiment, one of the 5 first limiting members is provided, and if the number of the first limiting members is more than one, the remaining first limiting members are rollers.

In this embodiment, the limiting groove 30 is not provided, but the axial auxiliary force acting on the jack 3 by the gear 72 can be balanced by the second limiting member 6, and the play of the jack 3 in the width direction is not caused.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity.

Claims (17)

1. A door lock structure for a home appliance includes

The ejector rod (3) can reciprocate along the length direction;

the driving mechanism (7) is in driving connection with the ejector rod (3);

characterized in that it also comprises

The accommodating box (4), a first limiting piece (5) and a second limiting piece (6) are arranged in the accommodating box (4) at intervals along the thickness direction of the ejector rod (3), the ejector rod (3) is provided with two first wall surfaces (3 a) which are oppositely arranged and two second wall surfaces (3 b) which are oppositely arranged, the two first wall surfaces (3 a) respectively prop against the first limiting piece (5) and the second limiting piece (6), and a through hole (41) for the ejector rod (3) to pass through is formed in the side wall of the accommodating box (4); the first limiting piece (5) is at least one, and the second limiting piece (6) is at least two arranged at intervals along the length direction of the ejector rod (3).

2. The door lock structure according to claim 1, wherein: the first limiting parts (5) are at least two arranged at intervals along the length direction of the ejector rod (3).

3. The door lock structure according to claim 2, wherein: the two second limiting pieces (6) are positioned on two sides of one of the first limiting pieces (5).

4. The door lock structure according to claim 2, wherein: the cross section of the first limiting piece and/or the second limiting piece is annular, and the axis extends along the width direction of the ejector rod.

5. The door lock structure according to claim 4, wherein: at least one first limiting part (5) is a wheel and is rotatably arranged on the accommodating box (4) through a first pin shaft (51), and the axis of the first pin shaft (51) extends along the width direction of the ejector rod (3).

6. The door lock structure according to claim 4, wherein: at least one second limiting piece (6) is a wheel and is rotatably arranged on the accommodating box (4) through a second pin shaft (61), and the axis of the second pin shaft (61) extends along the width direction of the ejector rod (3).

7. The door lock structure according to claim 1, wherein: a limiting groove (30) extending along the length direction of the first wall surface (3 a) of the ejector rod (3) is formed in the first wall surface, and the first limiting piece (5) is arranged in the limiting groove (30).

8. The door lock structure according to claim 1, wherein: the first limiting piece (5) and the second limiting piece (6) are arranged at positions, close to the through holes (41), in the accommodating box (4).

9. The door lock structure according to claim 1, wherein: the ejector rod (3) is provided with a first limiting block (31) and a second limiting block (32) along the length direction of the ejector rod, a first limiting part (42) and a second limiting part (43) which are arranged along the length direction of the ejector rod (3) at intervals are arranged in the accommodating box (4), the ejector rod (3) moves to the limit position along the reverse direction of the length direction under the state that the first limiting block (31) and the first limiting part (42) are propped against, and the ejector rod (3) moves to the limit position along the forward direction of the length direction under the state that the second limiting block (32) and the second limiting part (43) are propped against.

10. The door lock structure according to claim 1, wherein: the accommodating box (4) is internally provided with a micro switch (44), the ejector rod (3) is provided with a first convex part (33) and a second convex part (34) which can trigger the micro switch (44), the first convex part (33) and the second convex part (34) are arranged at intervals in the length direction of the ejector rod (3), and the door lock structure is in a locking state in a state that the first convex part (33) triggers the micro switch (44); in a state in which the second protrusion (34) triggers the micro switch (44), the door lock structure is in an unlocked state.

11. The door lock structure according to claim 1, wherein: the accommodating box (4) is formed by involution of two half shells (4 a), a first limiting piece (5) is arranged on one half shell (4 a), and a second limiting piece (6) is arranged on the other half shell (4 a).

12. The door lock structure according to any one of claims 1 to 11, wherein: the ejector rod (3) is provided with a tooth part (35) extending along the length direction of the ejector rod, the driving mechanism (7) comprises a motor (71) and a gear (72) connected with the motor (71) in a driving mode, and the gear (72) is directly meshed with the tooth part (35) or indirectly meshed with the gear through an intermediate gear (73).

13. The door lock structure according to claim 12, wherein: the tooth (35) is arranged on one of the second wall surfaces (3 b).

14. The door lock structure according to claim 12, wherein: the tooth part (35) is arranged on one of the first wall surfaces (3 a), and the gear (72) is one of the first limiting pieces or one of the second limiting pieces.

15. The door lock structure according to claim 12, wherein: the driving mechanism (7) is arranged in the accommodating box (4).

16. A household appliance applying the door lock structure as claimed in any one of claims 1 to 15, characterized in that: including electric apparatus main part (1) and door body (2), one side of electric apparatus main part (1) is uncovered, and the one end of door body (2) rotates with electric apparatus main part (1) to link to each other, and the other end of door body (2) can be towards or keep away from electric apparatus main part (1) deflection to make door body (2) open or close electric apparatus main part (1) uncovered department, holding box (4) are installed on the outer wall surface of electric apparatus main part (1) and are close its uncovered department setting, ejector pin (3) can link to each other with door body (2).

17. A household appliance as in claim 16, wherein: the household appliance is a cleaning machine, and the appliance main body (1) is a box body of the cleaning machine.

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