阅读说明：本技术 一种洗碗机及其控制方法 (Dish washing machine and control method thereof ) 是由 张辉珉 潘叶江 于 2020-11-30 设计创作，主要内容包括：本发明提出了一种洗碗机及其控制方法,包括洗碗机本体、盖设在所述洗碗机本体上的门体及控制器,在所述门体上设有磁铁,在所述洗碗机本体上设有与所述磁铁相配合的磁感应开关,且在所述洗碗机本体上还设有防夹手装置,所述控制器分别与所述磁感应开关、所述防夹手装置电性连接,所述防夹手装置包括电磁阀装置及顶杆装置,通过控制所述电磁阀装置的通电以使所述顶杆装置由所述洗碗机本体向所述门体方向伸出。避免用户在拿放洗碗机内的餐具时门体自动倒下,对用户造成伤害。(The invention provides a dish washing machine and a control method thereof, wherein the dish washing machine comprises a dish washing machine body, a door body and a controller, the door body is covered on the dish washing machine body, a magnet is arranged on the door body, a magnetic induction switch matched with the magnet is arranged on the dish washing machine body, a hand clamping prevention device is also arranged on the dish washing machine body, the controller is respectively electrically connected with the magnetic induction switch and the hand clamping prevention device, the hand clamping prevention device comprises an electromagnetic valve device and a push rod device, and the push rod device is enabled to extend out from the dish washing machine body to the direction of the door body by controlling the electrification of the electromagnetic valve device. The door body is prevented from automatically falling down when a user takes and puts tableware in the dish washer, and the user is prevented from being injured.)

1. The utility model provides a dish washer, its characterized in that establishes including dish washer body (1), lid the door body (2) and the controller on dish washer body (1) be equipped with magnet (3) on the door body (2) be equipped with on dish washer body (1) with magnet (3) matched with magnetic induction switch (4), and still be equipped with on dish washer body (1) and prevent tong device (5), the controller respectively with magnetic induction switch (4) prevent tong device (5) electric connection, prevent tong device (5) including solenoid valve device (51) and ejector pin device (52), through control the circular telegram of solenoid valve device (51) is so that ejector pin device (52) by dish washer body (1) to the door body (2) direction stretches out.

2. The dishwasher of claim 1, wherein the lift bar device (52) comprises a lift bar (521) and a first elastic member (522), one end of the first elastic member (522) is fixed on the dishwasher body (1), and the other end is connected with the lift bar (521).

3. The dishwasher of claim 2, wherein the solenoid valve device (51) comprises a buckle (511), a solenoid valve (512) and a solenoid valve pull rod (513), the controller is electrically connected to the solenoid valve (512), one end of the solenoid valve pull rod (513) is connected to the solenoid valve (512), the other end of the solenoid valve pull rod is connected to the buckle (511), and a buckling part (5111) of the buckle (511) abuts against a buckle matching part (5213) on the top bar (521) to limit the top bar device (52) from extending out of the dishwasher body (1) to the door body (2).

4. The dishwasher of claim 3, wherein the snap-fit portion (5213) is an inverted cone-shaped platform provided at the bottom of the top bar (521), the diameter of the upper end surface of the inverted cone-shaped platform is larger than that of the lower end surface of the inverted cone-shaped platform, and the fastening portion (5111) of the snap (511) abuts against the upper end surface of the inverted cone-shaped platform.

5. A dishwasher according to claim 3, characterized in that the solenoid valve device (51) further comprises a second elastic member (514), the second elastic member (514) being fitted around the solenoid valve rod (513).

6. The dishwasher of any one of claims 2 to 5, wherein a stem sleeve (5212) is provided on the stem (521), the stem sleeve (5212) defining a forward and backward movement direction of the stem (521).

7. A control method of a dishwasher applied to a dishwasher according to any one of claims 1 to 6, comprising the steps of:

detecting whether the state of a door body of the dish washing machine is an opening state or a closing state;

if the dishwasher door is in an open state, outputting a hand-clamping prevention signal;

if the dishwasher door is in a closed state, the hand-clamping prevention signal is not output.

8. The dishwasher of claim 7, wherein the step of outputting the hand-pinching prevention signal is specifically:

controlling the electromagnetic valve device to be electrified;

the push rod device extends out from the dishwasher body to the door body.

9. The dishwasher of claim 7, further comprising the following steps after outputting the hand-pinching prevention signal: and outputting a hand-clamping prevention closing signal after the preset time.

10. The dishwasher of claim 9, wherein the step of turning off the anti-pinching signal comprises: and controlling the electromagnetic valve device to be powered off.

Technical Field

The invention relates to the technical field of dish-washing machines, in particular to a dish-washing machine and a control method thereof.

Background

When a user opens the door to take and put tableware, the door can fall down automatically in the conventional sink dish washing machine, so that the hand of the user is injured; in order to solve the pain point in the industry, a damper is generally used at the position of a door hinge, and the door is subjected to certain friction force when being overturned, so that the speed of the door when automatically falling down is reduced, and the injury to a user is reduced; however, the damper has many disadvantages due to the use of metal friction plates. Firstly, after the damper is used for a long time, the friction force is reduced, the damping effect is greatly reduced, and the damper even fails after a period of time; secondly, the damper is limited by the installation volume and materials, and generally, when the opening angle of the door is less than 45 degrees, the damper can still fall down automatically, so that the hand clamping prevention effect cannot be achieved; thirdly, the damper mainly uses a metal friction plate, and since the installation position is high in temperature and humidity and alkaline corrosive vapor and liquid exist, the metal friction plate can be rusted or corroded, and failure is accelerated.

Disclosure of Invention

The present invention solves one of the problems of the related art to a certain extent, and therefore an object of the present invention is to provide a dishwasher capable of preventing hands from being pinched.

The above purpose is realized by the following technical scheme:

the utility model provides a dish washer, establishes including dish washer body, lid the door body and controller on the dish washer body be equipped with magnet on the door body be equipped with on the dish washer body with magnet matched with magnetic induction switch, just still be equipped with on the dish washer body and prevent tong device, the controller respectively with the magnetic induction switch prevent tong device electric connection, prevent tong device includes solenoid valve device and ejector pin device, through control the circular telegram of solenoid valve device is so that the ejector pin device by the dish washer body to the door body direction stretches out.

As a further improvement of the invention, the ejector rod device comprises an ejector rod and a first elastic piece, wherein one end of the first elastic piece is fixedly arranged on the dishwasher body, and the other end of the first elastic piece is connected with the ejector rod.

As a further improvement of the present invention, the electromagnetic valve device includes a buckle, an electromagnetic valve and an electromagnetic valve pull rod, the controller is electrically connected to the electromagnetic valve, one end of the electromagnetic valve pull rod is connected to the electromagnetic valve, the other end of the electromagnetic valve pull rod is connected to the buckle, and a buckling portion of the buckle abuts against a buckle matching portion on the top rod to limit the top rod device from extending out from the dishwasher body to the door body.

As a further improvement of the invention, the buckle matching part is an inverted cone-shaped platform arranged at the bottom of the ejector rod, the diameter of the upper end face of the inverted cone-shaped platform is larger than that of the lower end face of the inverted cone-shaped platform, and the buckling part of the buckle is abutted against the upper end face of the inverted cone-shaped platform.

As a further improvement of the present invention, the solenoid valve device further includes a second elastic member, and the second elastic member is sleeved outside the solenoid valve pull rod.

As a further improvement of the invention, the ejector rod is provided with an ejector rod sleeve which is used for limiting the front-back movement direction of the ejector rod.

The invention also aims to provide a control method of the dishwasher, which can prevent hands from being clamped.

A control method of a dishwasher is applied to the dishwasher, and is characterized by comprising the following steps:

detecting whether the state of a door body of the dish washing machine is an opening state or a closing state;

if the dishwasher door is in an open state, outputting a hand-clamping prevention signal;

if the dishwasher door is in a closed state, the hand-clamping prevention signal is not output.

As a further improvement of the invention, the step of outputting the hand-clamping prevention signal specifically comprises the following steps:

controlling the electromagnetic valve device to be electrified;

the electromagnetic valve pull rod is stressed to drive the buckle to be separated from the buckle matching part of the ejector rod;

the top rod extends out from the dishwasher body to the door body.

As a further improvement of the invention, the method also comprises the following steps after outputting the hand-clamping prevention signal: and outputting a hand-clamping prevention closing signal after the preset time.

As a further improvement of the invention, the step of closing the hand-clamping prevention signal specifically comprises the following steps:

and controlling the electromagnetic valve device to be powered off.

Compared with the prior art, the invention at least comprises the following beneficial effects:

1. the invention provides a dish washing machine, when a door body is opened, a magnet arranged on the door body is far away from a magnetic induction switch, the magnetic induction switch detects that the door body is opened, a controller controls a hand clamping prevention device to start, namely the electromagnetic valve device is controlled to be powered on so that a push rod device extends towards the direction of the door body, the push rod device has a supporting effect on the door body after extending, and the problem that the door body falls down automatically when a user takes and puts tableware in the dish washing machine and the user is injured is avoided.

2. The invention provides a control method of a dish washing machine, which is characterized in that when a door body of the dish washing machine is in an opening state, an anti-pinch signal is output, and the door body is prevented from automatically falling down when a user takes and places tableware in the dish washing machine, so that the user is prevented from being injured.

Drawings

FIG. 1 is a state diagram of a dishwasher with a door closed according to an embodiment;

FIG. 2 is a diagram illustrating a state that a door of the dishwasher is opened according to an embodiment;

FIG. 3 is a schematic diagram of the hand-pinching prevention device in the embodiment when the door body is closed;

FIG. 4 is a schematic view of the anti-pinching device at the moment when the door body is opened in the embodiment;

FIG. 5 is a schematic diagram of the hand pinching prevention device when the door body is opened in the embodiment;

FIG. 6 is a flowchart of a dishwasher control method according to an embodiment.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.

The first embodiment is as follows:

referring to fig. 1-5, the dishwasher of the present invention includes a dishwasher body 1, a door body 2 covering the dishwasher body 1, and a controller, wherein the door body 2 is provided with a magnet 3, the dishwasher body 1 is provided with a magnetic induction switch 4 matching with the magnet 3, the dishwasher body 1 is further provided with a hand clamping prevention device 5, the controller is respectively electrically connected with the magnetic induction switch 4 and the hand clamping prevention device 5, the hand clamping prevention device 5 includes an electromagnetic valve device 51 and a push rod device 52, and the push rod device 52 is extended from the dishwasher body 1 to the door body 2 by controlling the energization of the electromagnetic valve device 51.

The invention provides a dish washing machine, when a door body 2 closes a dish washing machine body 1, a magnetic induction switch 4 is matched with a magnet 3 to enable the door body 2 of the dish washing machine to be in a closed state, at the moment, the magnetic induction switch 4 detects that the door body 2 is closed, a controller controls a hand clamping prevention device 5 not to act, namely, an electromagnetic valve device 51 is controlled to be powered off, and a push rod device 52 does not extend out of the dish washing machine body 1 to the direction of the door body 2; when the door body 2 was opened, magnet 3 installed on the door body 2 kept away from magnetic induction switch 4, and magnetic induction switch 4 detected the door body 2 and was opened this moment, the controller control prevent that tong device 5 starts, control promptly solenoid valve device 51 circular telegram is so that ejector pin device 52 to 2 directions of the door body stretch out, ejector pin device 52 stretches out the back and has the supporting role to the door body 2, and the door body 2 was automatic down when avoiding the user to take the tableware in the dish washer, caused the injury to the user.

Still include mounting box 50, prevent tong device 5 and magnetic induction switch 4 all sets up in mounting box 50. The mounting box 50 is detachably mounted on the dishwasher body 1. The convenience is accomodate anti-pinch device 5 and magnetic induction switch 4, and when anti-pinch device 5 and/or magnetic induction switch 4 damage need be maintained, only needs to dismantle mounting box 50 from dish washer body 1 get off, makes things convenient for dismouting, maintenance.

The magnetic induction switch 4 is arranged on the top of the mounting box 50 and is slightly dislocated with the magnet 3 arranged on the door body 2 to form dislocation mounting.

The top bar device 52 comprises a top bar 521 and a first elastic member 522, wherein one end of the first elastic member 522 is fixedly arranged on the dishwasher body 1, and the other end is connected with the top bar 521. In this embodiment, one end of the first elastic member 522 is fixed to the mounting box 50, and the other end is connected to the top rod 521.

The electromagnetic valve device 51 comprises a buckle 511, an electromagnetic valve 512 and an electromagnetic valve pull rod 513, the controller is electrically connected with the electromagnetic valve 512, one end of the electromagnetic valve pull rod 513 is connected with the electromagnetic valve 512, the other end of the electromagnetic valve pull rod is connected with the buckle 511, and a buckling part 5111 of the buckle 511 is matched with a buckle matching part 5213 on the ejector rod 521.

The buckle matching part 5213 is arranged on the inverted conical table at the bottom of the ejector rod 521, the diameter of the upper end face of the inverted conical table is larger than that of the lower end face of the inverted conical table, and the buckling part 5111 of the buckle 511 is abutted against the upper end face of the inverted conical table.

The solenoid valve device 51 further comprises a second elastic member 514, and the second elastic member 514 is sleeved outside the solenoid valve pull rod 513.

When the door body 2 is closed, the controller sends a hand-clamping prevention signal, the controller controls the electromagnetic valve 512 to be electrified, the electromagnetic valve pull rod 513 moves leftwards under the action of magnetic force, the buckle 511 is pulled to rotate leftwards, the buckle 511 and the buckle matching part 5213 on the ejector rod 521 are disengaged, the ejector rod 521 extends out from the dishwasher body 1 to the door body 2 due to the upward elastic force of the first elastic piece 522, and a certain upward ejecting force is kept due to the larger elastic force of the first elastic piece 522; when the dishwasher door body 2 falls naturally, the dishwasher door body falls to a certain angle, and the bottom surface of the door body 2 is supported upwards by the ejector rod 521, so that the falling speed is slowed down, and even the dishwasher door body is static, and the effect of preventing hands from being clamped is achieved.

After the controller sent the anti-pinch signal time delay a plurality of seconds, closed anti-pinch signal, controller control solenoid valve 512 outage, solenoid valve pull rod 513 receives second elastic component 514 elasticity and moves right, promotes buckle 511 and rotates right, and buckle 511 resets to initial condition, and the up end and the back taper platform of buckle 511's buckling parts 5111 offset this moment, and is in under first elastic component 522's the effect, ejector pin 521 still keeps a trend that shifts up to support the door body 2.

When the door body 2 needs to be closed, the user presses the door body 2 downwards with force, at the moment, the ejector rod 521 moves downwards under the force, and meanwhile, the first elastic piece 522 is also pressed downwards under the force until the inverted cone-shaped platform is buckled with the buckled part 5111 of the reset buckle 511, at the moment, the magnetic induction switch 4 detects that the door body 2 is closed, and the controller controls and maintains the power-off state of the electromagnetic valve 512.

The upper end surface of the stem 521 has an inclined surface 5211. The inclined surface 5211 is matched with the bottom surface of the door body 2 to better support the door body 2. The top of the ejector 521 is better contacted and stressed with the bottom surface of the door.

A top rod sleeve 5212 is arranged on the top rod 521, and the top rod sleeve 5212 is used for limiting the front-back movement direction of the top rod 521. Preventing the lift pin 521 from being displaced when moving up and down.

A snap pin 544 is further included, and the snap 511 is connected to the snap pin 544, so that the snap 511 can rotate left and right through the snap pin 544.

Example two:

referring to fig. 6, a method for controlling a dishwasher, applied to the above-mentioned dishwasher, includes the steps of:

step S101, detecting the state of a door body of the dishwasher as an opening state or a closing state;

if the dishwasher door is in an open state, the process proceeds to step S102: outputting an anti-pinch signal;

if the dishwasher door is in a closed state, the process proceeds to step S103: and no hand-clamping prevention signal is output.

The invention provides a control method of a dish washing machine, which is characterized in that when a door body of the dish washing machine is in an opening state, an anti-pinch signal is output, and the door body is prevented from automatically falling down when a user takes and places tableware in the dish washing machine, so that the user is prevented from being injured.

The step of outputting the anti-pinch signal in the step S102 specifically includes:

controlling the electromagnetic valve device to be electrified;

the top rod extends out from the dishwasher body to the door body.

Hand signal is prevented pressing from both sides in the output to make the ejector pin by the dish washer body to the door body direction stretches out, the ejector pin device has the supporting role to the door body after stretching out, and the door body is automatic to fall down when avoiding the user to take the tableware in the dish washer, causes the injury to the user.

After the anti-pinch signal is output in the step S102, the method further comprises the following steps: and step S104, outputting a hand-clamping prevention closing signal after a preset time. The preset time is 2-3 s. And the waste of resources caused by continuous power-on is avoided.

Step S104, the step of closing the hand-clamping prevention signal specifically comprises the following steps:

and controlling the electromagnetic valve device to be powered off.

Close and prevent tong signal, controller control solenoid valve outage, the solenoid valve pull rod receives second elastic component elasticity and moves right, promotes the buckle rotatory right, and the buckle resets to initial condition, and the up end and the back taper platform of the buckling parts of buckle offset this moment, just are in under the effect of first elastic component, the ejector pin still keeps a trend of shifting up to support the door body.

When the door body need be closed, the user pushes down the door body hard, the ejector pin atress downstream this moment, and first elastic component also atress pushes down simultaneously, and until back taper platform and the buckle buckling parts lock that has reset, the magnetic induction switch detected the door body and has closed this moment, and controller control keeps the outage state of solenoid valve.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.