CN216648093U

CN216648093U - Switch assembly and cooking appliance comprising same

Info

Publication number: CN216648093U
Application number: CN202123141946.4U
Authority: CN
Inventors: 吕挺; 陈锡雁; 梁郁庆; 周垚垚
Original assignee: Zhejiang Tianxi Kitchen Appliance Co Ltd
Current assignee: Zhejiang Tianxi Kitchen Appliance Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-31
Anticipated expiration: 2031-12-14

Abstract

The utility model relates to a switch assembly and a cooking appliance comprising the same. The switch assembly is used for detecting the opening and closing states of a door body of the cooking appliance and comprises a switch support (1), and a hook connecting rod (3) and a micro switch (4) which are arranged on the switch support (1). The switch bracket (1) is provided with a hook movable column (1 b). The hook connecting rod (3) is provided with a hook hole (3 c). The hook hole (3c) is sleeved on the hook movable column (1b), so that the hook connecting rod (3) rotates between the trigger position for triggering the microswitch (4) and the reset position for releasing the microswitch (4) under the action of the door body. The switch assembly triggers or releases the micro switch through the matching of the hook connecting rod and the micro switch so as to detect the opening and closing state of the door body of the cooking appliance, so that the cooking appliance can control the running state of the cooking appliance according to the opening and closing state of the door body, and the use safety of the cooking appliance is improved.

Description

Switch assembly and cooking appliance comprising same

Technical Field

The utility model relates to the field of kitchen appliances, in particular to a switch assembly and a cooking appliance comprising the same.

Background

With the improvement of living standard of people, cooking appliances are gradually popularized in common families. People can conveniently finish various cookings by using the cooking electric appliance, thereby freeing users from complex cooking work and improving the life quality of people.

Ovens and microwave ovens are currently the most common cooking appliances in the home. Ovens or microwave ovens generally comprise a door and a body. The main body is internally provided with a cooking cavity and a heating tube or a microwave generator which is used for carrying out radiation heating or microwave heating on food in the cooking cavity. The door body is connected with the main body through a door shaft and can rotate around the door shaft between a closed position and an open position. In the open position, the cooking cavity in the main body is open, and a user can conveniently place food to be cooked in the cooking cavity or take cooked food out of the cooking cavity. In the closed position, the door body encloses a cooking cavity within the body to activate the cooking appliance to cook food within the cooking cavity.

For the oven, when the door body is in the open position, if the oven begins to work, then the heat radiation that the heating tube sent can propagate to the cooking chamber outside to cause potential safety risk. For example, the heat radiation may burn a user near the oven or damage objects near the oven. Similarly, in the case of the microwave oven, when the door is in the open position, if the microwave oven starts to operate, the microwave generated from the microwave generator is transmitted to the outside of the cooking cavity, thereby causing damage to the health of the user in the vicinity of the microwave oven.

Therefore, a mechanism capable of detecting the opening and closing state of the door body needs to be provided, so that the cooking appliance can obtain the opening and closing state of the door body, the operation of the cooking appliance is controlled according to the opening and closing state of the door body, the cooking appliance is prevented from being started in the opening state of the door body, and the use safety of the cooking appliance is improved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a switch assembly and a cooking appliance including the switch assembly, wherein the switch assembly can detect the opening and closing state of a door body, so that the cooking appliance is prevented from starting to work when the door body is at an opening position, and the use safety of the cooking appliance is improved.

According to one aspect of the utility model, the switch assembly is used for detecting the opening and closing state of a door body of a cooking appliance, and comprises a switch support, and a hook connecting rod and a microswitch which are arranged on the switch support, wherein a hook movable column is arranged on the switch support, a hook hole is arranged on the hook connecting rod, and the hook hole is sleeved on the hook movable column, so that the hook connecting rod rotates between a trigger position for triggering the microswitch and a reset position for releasing the microswitch under the action of the door body.

According to the preferred embodiment of the utility model, the end part of the hook connecting rod is provided with a switch contact wall, the micro switch is provided with a switch contact, and when the hook connecting rod is in the trigger position, the switch contact wall abuts against the switch contact to trigger the micro switch.

According to a preferred embodiment of the utility model, the switch assembly further comprises a return spring for maintaining the hanger link in a return position.

According to the preferred embodiment of the utility model, the switch bracket is provided with a spring blocking piece, the hook connecting rod is provided with a spring fixing column, and the reset spring is arranged between the spring blocking piece and the spring fixing column.

According to the preferred embodiment of the utility model, the spring retaining plate is provided with a spring positioning column, and the return spring is fixed on the spring retaining plate through the spring positioning column.

According to the preferred embodiment of the utility model, the switch bracket is provided with a switch positioning column, and the micro switch is positioned on the switch bracket through the switch positioning column.

According to the preferred embodiment of the utility model, the switch bracket is further provided with a switch fixing buckle, and the micro switch is fixed on the switch bracket through the fixing buckle.

According to another aspect of the utility model, a cooking appliance is provided, which includes a main body and a door body, the door body is movably connected with the main body and can rotate between an open position and a closed position, the switch assembly described above is arranged on the main body, and when the door body is in the closed position, the door body pushes the hook connecting rod, so that the hook connecting rod moves to a trigger position.

According to the preferred embodiment of the utility model, the door body is provided with a mandril, the main body comprises a doorframe support, the doorframe support is provided with a mandril hole, the switch component is installed behind the mandril hole on the doorframe support, and when the door body moves to the closed position, the mandril passes through the mandril hole and pushes the hook connecting rod, so that the hook connecting rod moves to the trigger position.

According to a preferred embodiment of the utility model, the cooking appliance is a microwave oven or an oven.

According to the technical scheme, the switch assembly triggers or releases the micro switch through the matching of the hook connecting rod and the micro switch so as to detect the opening and closing state of the door body of the cooking appliance, so that the cooking appliance can control the running state of the cooking appliance according to the opening and closing state of the door body, and the use safety of the cooking appliance is improved.

Furthermore, in the switch assembly, the rotating connection stability between the hook connecting rod and the switch bracket is high, and the hook connecting rod is not easy to damage, so that the high reliability of the switch assembly is ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter, and not limit the subject matter.

FIG. 1 is an exploded view of a switch assembly according to an embodiment of the utility model;

FIG. 2 is an exploded view of a switch assembly and a doorframe bracket according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a switch assembly in a reset position according to an embodiment of the present invention;

fig. 4 is a schematic view of a switch assembly in a trigger position according to an embodiment of the present invention.

Description of reference numerals:

1-switch support 1 a-fixed screw column 1 b-hook movable column

1 c-switch positioning column 1 d-spring positioning column 1 e-spring catch

1 f-switch fixing buckle 1 g-screw hole 2-screw with medium

3-hook connecting rod 3 a-spring fixing column 3 b-switch contact wall

3 c-hook hole 4-microswitch 4 a-switch contact

5-reset spring 6-doorframe bracket 6 a-bracket screw column

6 b-ejector pin hole

Detailed Description

Various exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to limit the utility model, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement and values of the components and steps set forth in these embodiments are to be construed as exemplary only and not as limiting unless otherwise specifically noted.

Embodiments of the present invention relate to a switch assembly. This switch module can set up in cooking appliance for detect the switching state of cooking appliance door body. The cooking appliance can control the operation of the cooking appliance according to the obtained opening and closing state of the door body, so that the phenomenon that the door body starts to work when the door body is in an opening position is avoided, and the use safety of the cooking appliance is improved.

Fig. 1 is an exploded view of a switch assembly according to an embodiment of the utility model. The switch assembly is used for detecting the opening and closing state of a door body of the cooking appliance. As shown in fig. 1, the switch assembly includes a switch bracket 1, and a hook link 3 and a micro switch 4 provided on the switch bracket 1. The switch bracket 1 is provided with a hook movable column 1 b. The hook connecting rod 3 is provided with a hook hole 3 c. When the hook connecting rod 3 is installed on the switch support 1, the hook hole 3c is sleeved on the hook movable column 1b, so that the hook connecting rod 3 can rotate between the trigger position and the reset position by taking the hook movable column 1b as a shaft under the action of the door body. In the trigger position, the end of the catch link 3 abuts against the switch contact 4a of the microswitch 4, triggering the microswitch 4. In the reset position, the hook link 3 releases the switch contact 4a of the microswitch 4, so that the microswitch 4 is in the off state. In the switch component of the embodiment, the rotating connection stability between the hook connecting rod 3 and the switch bracket 1 is high, and the hook connecting rod is not easy to damage, so that the high reliability of the switch component is ensured.

In a preferred embodiment, in order to prevent the hook connecting rod 3 from falling off from the hook movable column 1b, a screw hole 1g may be further formed on the hook movable column 1 b. The belt screw 2 can be screwed into the screw hole 1g, so that the hook connecting rod 3 is kept on the hook movable column 1b, and the reliability of the switch assembly is further improved.

In a preferred embodiment, the end of the hanger link 3 may be provided with a switch contact wall 3 b. When the hook link 3 moves to the trigger position, the switch contact wall 3b smoothly abuts against the switch contact 4a, thereby triggering the micro switch 4. The switch contact wall 3b can enable the hook connecting rod 3 to gradually push the switch contact 4a, so that the hook connecting rod 3 and the switch contact 4a are prevented from being damaged due to severe impact, and the reliability of the switch assembly is improved.

According to a preferred embodiment, the switch assembly further comprises a return spring 5. The return spring 5 can generate an elastic force for holding the hanger link 3 in the return position. Specifically, the switch bracket 1 is provided with a spring catch 1 e. The hook connecting rod 3 is provided with a spring fixing column 3 a. The return spring 5 is arranged between the spring catch 1e and the spring fixing column 3 a. Preferably, the spring catch 1e may further be provided with a spring positioning post 1 d. The return spring 5 can be sleeved on the spring positioning column 1d, so as to be stably fixed on the spring catch 1 e. When the door body moves from the opening position to the closing position, the door body needs to overcome the elastic force generated by the reset spring 5, and then the hook connecting rod 3 can be pushed to move to the triggering position, so that the microswitch 4 is triggered. When the door body moves from the closed position to the open position, the door body is separated from the hook connecting rod 3, the hook connecting rod 3 is restored to the reset position under the action of the elastic force of the reset spring 5, and the micro switch 4 returns to the off state which is not triggered at the moment.

In a preferred embodiment, two switch positioning posts 1c are provided on the switch bracket 1. The micro switch 4 is provided with two through holes corresponding to the two switch positioning columns 1 c. When the micro switch 4 is installed, the two through holes of the micro switch 4 are respectively aligned with the two switch positioning columns 1c, and the two switch positioning columns 1c are respectively embedded into the two through holes, so that the micro switch 4 is accurately installed at a preset position on the switch bracket 1.

The switch bracket 1 can also be provided with a switch fixing buckle 1 f. When installing micro-gap switch 4, switch fixing buckle 1f and micro-gap switch 4's lateral part joint to make micro-gap switch 4 fix on switch bracket 1. When the micro switch 4 needs to be detached, the micro switch 4 can be taken out of the switch bracket 1 only by moving the switch fixing buckle 1f away from the side part of the micro switch 4.

The embodiment of the utility model also relates to a cooking appliance. The cooking appliance comprises a main body and a door body. The door body is movably connected with the main body through a pivot, for example. The door body is rotatable between an open position and a closed position to close or open the cooking cavity within the body. The switch assembly of the above-described embodiment is provided on the main body. When the door body is in the closed position, the door body pushes the hook connecting rod 3, so that the hook connecting rod 3 moves to the trigger position, and the microswitch 4 is triggered. The microswitch 4 can be connected with a control circuit of the cooking appliance, and the control circuit can determine the opening and closing state of the door body according to the state of the microswitch 4, so that the operation of the cooking appliance can be controlled according to the opening and closing state of the door body. When the door body is at the opening position, the control circuit prohibits the cooking appliance from entering the running state; only when the door body is in the closed position can the cooking appliance enter the running state.

In a preferred embodiment, the switch assembly is mounted on a doorframe bracket of the cooking appliance main body. Fig. 2 is an exploded view of the switch assembly of the present embodiment and a doorframe bracket on a main body of a cooking appliance. As shown in fig. 2, the doorframe bracket 6 is provided with a jack rod hole 6 b. Two fixed screw posts 1a are arranged on a switch bracket 1 of the switch component. Correspondingly, two bracket screw posts 6a are provided on the doorframe bracket 6. The switch assembly is fixedly installed behind the lifter hole 6b of the doorframe bracket 6 by passing two screws through two fixing screw posts 1a and two bracket screw posts 6a, respectively. A mandril is arranged on the cooking electric appliance door body corresponding to the mandril hole 6 b. When the door body moves to the closing position, the ejector rod penetrates through the ejector rod hole 6b and pushes the hook connecting rod 3, so that the hook connecting rod 3 moves to the triggering position, and the microswitch 4 is triggered.

Fig. 3 and 4 are schematic diagrams of the switch assembly of the present embodiment in a reset state and a trigger state, respectively. When the door body is at the opening position, the door body is not in contact with the hook connecting rod 3, the hook connecting rod 3 is kept at the reset position under the action of the reset spring 5, and the microswitch 4 is at the off state. When the door body moves from the opening position to the closing position, the ejector rod on the door body pushes the hook connecting rod 3, so that the hook connecting rod 3 moves to the triggering position to trigger the microswitch 4. At the moment, the control circuit detects that the door body is at the closed position, so that the cooking appliance can be allowed to start cooking food. When a user opens the door body, the ejector rod of the door body is far away from the hook connecting rod 3, the hook connecting rod 3 is restored to the reset position under the action of the reset spring 5, and the micro switch 4 is turned to the off state at the moment. At the moment, the control circuit detects that the door body is opened, so that the operation of the cooking appliance is stopped immediately to avoid causing injury to a user. The switch assembly of this embodiment can be used for detecting the switching state of the door body of cooking appliance, ensures that the door body can not operate when opening cooking appliance to cooking appliance's security has been improved.

The cooking appliance described in the above embodiments may be any cooking appliance having a door body that can be opened and closed. Typically, the cooking appliance may be a microwave oven or an electric oven, or may be a multifunctional cooking appliance having functions of a microwave oven, an oven, a steam box and/or an air-frying.

So far, some specific embodiments of the present invention have been described in detail by way of examples, but it should be understood by those skilled in the art that the above examples are for illustration only, and not for limiting the scope of the present invention. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the utility model.

Claims

1. The utility model provides a switch module for detect the on-off state of cooking appliance's the door body, its characterized in that, switch module includes switch support (1) and sets up couple connecting rod (3) and micro-gap switch (4) on switch support (1), be equipped with couple movable post (1b) on switch support (1), be equipped with couple hole (3c) on couple connecting rod (3), couple hole (3c) cover is established on couple movable post (1b) for couple connecting rod (3) rotate between the reset position of triggering micro-gap switch (4) and release micro-gap switch (4) under the effect of the door body.

2. A switch assembly according to claim 1, characterized in that the end of the hook link (3) is provided with a switch contact wall (3b), and the microswitch (4) is provided with a switch contact (4a), the switch contact wall (3b) abutting against the switch contact (4a) for activating the microswitch (4) when the hook link (3) is in the activated position.

3. The switch assembly according to claim 1, characterized in that it further comprises a return spring (5) to keep the hooking rod (3) in a return position.

4. The switch assembly according to claim 3, characterized in that a spring catch (1e) is provided on the switch bracket (1), a spring fixing post (3a) is provided on the hook connecting rod (3), and the return spring (5) is provided between the spring catch (1e) and the spring fixing post (3 a).

5. The switch assembly according to claim 4, wherein the spring catch (1e) is provided with a spring positioning post (1d), and the return spring (5) is fixed on the spring catch (1e) through the spring positioning post (1 d).

6. The switch assembly according to claim 1, characterized in that the switch bracket (1) is provided with a switch positioning post (1c), and the micro switch (4) is positioned on the switch bracket (1) through the switch positioning post (1 c).

7. The switch assembly according to claim 6, characterized in that the switch bracket (1) is further provided with a switch fixing buckle (1f), and the micro switch (4) is fixed on the switch bracket (1) through the switch fixing buckle (1 f).

8. An electric cooking appliance comprising a main body and a door body, wherein the door body is movably connected with the main body and can rotate between an opening position and a closing position, the electric cooking appliance is characterized in that the main body is provided with a switch assembly according to any one of the preceding claims, and when the door body is in the closing position, the door body pushes the hook connecting rod (3) so that the hook connecting rod (3) moves to a triggering position.

9. The cooking appliance according to claim 8, wherein the door body is provided with a push rod, the main body comprises a door frame support (6), the door frame support (6) is provided with a push rod hole (6b), the switch assembly is mounted behind the push rod hole (6b) on the door frame support (6), and when the door body moves to the closed position, the push rod passes through the push rod hole (6b) and pushes the hook connecting rod (3), so that the hook connecting rod (3) moves to the trigger position.

10. The cooking appliance according to any of the claims 8 or 9, characterized in that the cooking appliance is a microwave oven or an oven.