CN104812981A - Door body interlock switch and microwave cooking device utilizing the door body interlock switch - Google Patents

Abstract

A microwave cooking equipment door interlock switch and microwave cooking equipment, the interlock switch includes a door hanger (1) arranged on the door body (100), an interlock assembly (2) arranged on the door front panel (200) ) and at least one microswitch (3), the interlock assembly includes a bracket (21), a cam (22) that is located on the bracket (21) and can rotate relative to the bracket (21), and is used to set the cam (22) in The elastic member (23) that resets on the support (21), the door hanger (1) is provided with a positioning plate (11) and a hanging hole (10), and the cam (22) is provided with a hanging hole that can be connected with the door hanger (1) (10) locking hooks (220) that are interlocked, microswitches (3) are fixed on both sides of the bracket (21), and the cam (22) is provided with a structure that abuts against the trigger button (30); the microwave cooking The equipment adopts the above-mentioned interlock switch. The door body interlock switch of the microwave cooking equipment and the distance between the door body (100) and the front panel (200) of the microwave cooking equipment can be controlled to avoid microwave leakage, steam leakage and the relationship between the door body (100) and the front panel ( 200) because the distance is too close to strike a fire, and its safety is high.

Description

Door body interlock switch and microwave cooking equipment using the door body interlock switch technical field

The invention belongs to the technical field of microwave cooking equipment production, and more specifically relates to a microwave cooking equipment door interlock switch and microwave cooking equipment.

Background technique

The door locks of existing microwave cooking equipment such as microwave ovens, microwave ovens, microwave steam ovens, etc. generally adopt a door hinge structure, which usually includes a door seal and its raised part, an interlocking bracket, an interlocking lever, and an interlocking spring. The defects of the structure are: if the pulling force of the door hinge system is not enough, the assembly and size of the hinge system are unqualified, and when worn after long-term use, the gap between the front panel and the door body is unstable, resulting in microwave leakage, steam leakage, front panel and door There are phenomena such as sparking between the body; the reason is that there is no proper tension fixing between the front plate and the door body at a suitable position, and the gap between the door body and the front plate is large and the gap is not controlled.

technical problem

The technical problem to be solved by the present invention is to provide a door interlock switch for microwave cooking equipment, which aims to solve the problem of microwave leakage, steam leakage and occurrence between the front plate and the door caused by the unstable gap between the front plate and the door body. The problem of sparking phenomenon.

technical solution

In order to solve the above technical problems, the technical solution adopted by the present invention is: provide a door body interlock switch of microwave cooking equipment, which is used for locking between the door body and the front panel of the door, including a door body arranged on the door body Hanging, an interlock assembly on the front panel of the door and at least one micro switch, the interlock assembly includes a bracket, a cam that is arranged on the bracket and can rotate relative to the bracket, and is used to turn the The elastic member that the cam resets on the bracket, the door hanger is provided with a positioning plate and a hanging hole, the cam is provided with a lock hook that can be interlocked with the hanging hole of the door hanger, and the micro switch There is a trigger button on the top, and there are fixed structures for installing the micro switch on both sides of the bracket. The cam is provided with a raised part and an arc-shaped touch part that can be pushed against the trigger button of the micro switch. .

Further, a circular shaft protrudes from one side of the bracket, and the cam is provided with a sleeve that can be sleeved on the circular shaft, and the cam is formed with the bracket through the sleeve and the circular shaft. Turn to connect.

Further, an anti-off protrusion is provided near the end surface of the round axis of the bracket, and a groove is provided on the inner side of the bush of the cam to allow the anti-off protrusion to pass through, and the bush is sleeved on the on the circular shaft and the protrusion is located outside the sleeve.

Further, the cam is provided with a backing plate that can touch the front end of the hanging hole plate of the door hanger, an open slot is formed between the backing plate and the lock hook, and the bracket has a front end A "T"-shaped hole is provided on the front end plate, and the lock hook of the cam and the abutting plate are arranged facing the "T"-shaped hole.

Further, the bracket is also provided with an arc-shaped hole, and the arc-shaped touch part is passed through the arc-shaped hole.

Specifically, the fixing structure includes two pin shafts and two clips protruding laterally from the bracket, each of the micro switches is respectively provided with two shaft holes matching the pin shafts, The micro switch is sheathed on the pin shaft through the shaft hole, and the clips are fastened on both sides of the micro switch.

Further, the elastic member is a torsion spring, the bracket is provided with a first connection hole, the cam is provided with a second connection hole, one end of the torsion spring is plugged into the first connection hole, and the other One end is plugged into the second connection hole.

The beneficial effect of the microwave cooking equipment door interlock switch provided by the present invention is that: through the cooperation of the door hanger arranged on the door body and the lock hook on the cam in the interlock assembly arranged on the rear side of the front panel of the door, the lock of the door hanger The size is fixed. When the door is closed, the door hanger pushes against the cam and rotates the cam to a certain angle. The door hanger is connected with the lock hook. Under the action of the elastic member, the cam will pull the door toward the front panel of the door. Hanging, so that the door body is tightened; at this time, the positioning plate on the door hanger is in contact with the front panel of the door, preventing the door body from continuing to approach the front panel of the door, so that the distance between the front panel and the door body is controlled at 0.3~ 3mm Left and right, this distance can effectively prevent microwave leakage and steam leakage, and at the same time prevent the phenomenon of sparking between the door body and the front panel of the door due to too close distance.

Another technical problem to be solved by the present invention is to provide a microwave cooking device, which includes a door body and a front panel of the door, the door body and the front panel of the door are locked and controlled by a door body interlocking system, and the door lock is interlocked. The lock system includes at least two door interlock switches described above.

Specifically, there are two door interlock switches, one of the door interlock switches is provided with two micro switches, and the other door interlock switch is provided with a micro switch, so Among the above three micro switches, any two of them are normally open micro switches, and the other is normally closed micro switches; Under the action of the torsion spring, the trigger buttons of the micro switches are not in contact with each other. The two normally open micro switches are in the open state, and the normally closed micro switches are in the closed state. At this time, the entire system is in a power-off state. The cooking equipment does not work; when the door body is closed, the door hangs against the cam, and the trigger buttons of each of the micro switches are touched, wherein the trigger buttons of the normally closed micro switches are touched first, so that the normal The closed micro switch is turned on, and the two normally open micro switches are closed, and the microwave cooking equipment is in standby mode at this time.

Or, specifically, there are two door interlock switches, and each of the door interlock switches is provided with two micro switches, one of which is a normally closed micro switch and the other is a normally open micro switch. Switch: when the door body is opened, the protruding part or arc-shaped touch part of the cam is not in contact with each of the micro switches under the action of the torsion spring, and the two normally open micro switches are in the open state , the two normally closed micro switches are in the closed state. At this time, the whole system is in the power off state, and the microwave cooking equipment does not work; when the door body is closed, the door hangs against the cam, and each of the micro switches The trigger button of the dynamic switch is touched, wherein the trigger button of the normally closed micro switch is touched first, so that the two normally closed micro switches are opened, and the two normally open micro switches are closed, and the microwave cooking equipment is in the standby state at this time.

Beneficial effect

The beneficial effect of the microwave cooking equipment provided by the present invention is that: because the microwave cooking equipment of the present invention adopts the above-mentioned door body interlock switch, the distance between the door body and the front panel of the door is well controllable, even if the door hinge system When the size is unqualified and worn, the distance between the door body and the door front panel can be effectively controlled at about 0.3~3mm, which avoids the phenomenon that the distance between the door body and the door front panel is out of control due to the problem of the door hinge system , which effectively solves the problems of microwave leakage and steam leakage caused by the door body and the front panel being too close to sparks, and the upper door gap between the door body and the front panel is too large; it also solves the problems of microwave equipment Control problems of electrical systems.

Description of drawings

Fig. 1 is a schematic diagram of the exploded structure of Embodiment 1 of the microwave cooking equipment door interlocking system provided by the embodiment of the present invention;

Fig. 2 is a schematic diagram of the exploded structure of the microwave cooking equipment door interlock switch provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of the explosion structure of the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 4 is a second schematic diagram of the exploded structure of the microwave cooking equipment door interlock switch provided by the embodiment of the present invention;

Fig. 5 is a three-dimensional structural schematic diagram of a door hanger used in the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 6 is a three-dimensional structural schematic diagram 1 of the bracket used in the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 7 is a three-dimensional structural schematic diagram II of the bracket used in the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 8 is a three-dimensional structural schematic diagram 1 of the cam used in the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 9 is a schematic diagram 2 of the three-dimensional structure of the cam used in the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the front structure of the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention when it is opened;

Fig. 11 is a schematic diagram of the reverse structure of the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention when it is opened;

Fig. 12 is a schematic diagram of the front structure of the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention when it is closed;

Fig. 13 is a schematic diagram of the reverse structure of the door interlock switch of the microwave cooking equipment provided by the embodiment of the present invention when it is closed;

Fig. 14 is a schematic diagram of the exploded structure of Embodiment 2 of the microwave cooking equipment door interlocking system provided by the embodiment of the present invention;

Fig. 15 is a schematic structural diagram of a micro switch in an embodiment of the present invention.

Embodiments of the present invention

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 to FIG. 6 and FIG. 15 together, and now the door interlock switch of the microwave cooking equipment provided by the present invention will be described. The door body interlock switch of microwave cooking equipment is used for locking between the door body 100 and the front panel 200 of the door. The lock assembly 2 and at least one microswitch 3, the interlock assembly 2 includes a bracket 21, a cam 22 arranged on the bracket 21 and rotatable relative to the bracket 21, an elastic member 23 for resetting the cam 22 on the bracket 21, The door hanger 1 is provided with a positioning plate 11 and a hanging hole 10, the cam 22 is provided with a lock hook 220 that can be interlocked with the hanging hole 10 of the door hanger 1, the micro switch 3 is provided with a trigger button 30, and the two sides of the bracket 21 There is a fixed structure 210 for installing the micro switch 3, and each micro switch 3 is installed on the bracket 21 through the fixed structure 210, and the cam 22 is provided with a raised part for abutting against the trigger button 30 of the micro switch 3 224 and the arc-shaped touch part 225, when the door body 100 is closed, the micro switch 3 can be controlled through a specific structural design to control the working state of the microwave cooking equipment.

In the microwave cooking equipment door interlock switch provided by the present invention, the door hanger 1 arranged on the door body 100 cooperates with the lock hook 220 on the cam 22 in the interlock assembly 2 arranged on the rear side of the door front panel 200, and the door The size of the hanger 1 is fixed. When the door body 100 is closed, the front end of the door hanger 1 faces the cam 22 and makes it rotate, and the cam 22 turns to a certain angle. Under the action, the cam 22 will pull the door hanger 1 toward the door front panel 200, so that the door body 100 is tightened; The door front panel 200 is close, so that the distance between the door front panel 200 and the door body 100 is controlled at about 0.3~3mm. This distance can effectively prevent microwave leakage and steam leakage, and also prevent the gap between the door body 100 and the door front panel 200. Sparking occurs due to being too close.

Further, please refer to Fig. 6 to Fig. 9 together. As a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, a circular shaft 211 is protruded on one side of the bracket 21, and a movable shaft 211 is provided on the cam 22. A shaft sleeve 221 sleeved on the round shaft 211 , the cam 22 is rotatably connected with the bracket 21 through the shaft sleeve 221 and the round shaft 211 . In this way, when the front end of the door hanger 1 touches the cam 22, the cam 22 can rotate around the circular axis 211 relative to the bracket 21 in a certain arc, and at the same time, under the action of the elastic member 23, the cam 22 will move toward the direction of the front panel 200 of the door. Pull the door hanger 1 so that the door body 100 is automatically tightened, and the distance between the door front panel 200 and the door body 100 is controlled at about 0.3-3mm.

Further, please refer to FIG. 7 to FIG. 10 , as a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, the round shaft 211 of the bracket 21 is provided with an anti-loosening protrusion 2111 near its end surface, The inner side of the shaft sleeve 221 of the cam 21 is provided with a groove 2211 that allows the anti-off protrusion 2111 to pass through. During installation, after the protrusion 2111 is aligned with the groove 2211, the cam 22 is pushed towards the direction of the bracket 21. When the shaft sleeve 221 sets When on the round shaft 211, rotate a certain angle so that the protrusion 2111 is located outside the shaft sleeve 221, so that the cam 22 will not slip off from the round shaft 211 of the bracket 21, the structure is simple and reliable, and no other fixing parts are needed , easy to install.

Further, referring to Fig. 1, Fig. 5 to Fig. 8 and Fig. 10 to 13, as a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, the cam 22 is provided with a hook that can be connected to the door hanger 1 The front end of orifice plate 12 abuts against plate 223, forms opening groove 203 between against plate 223 and lock hook 220, and support 21 has front end plate 213, and support 21 is fixed on the rear side of door front plate 200 by front end plate 213, The front end plate 213 is provided with a "T" shaped hole 2130, and the lock hook 220 of the cam 22 and the abutting plate 223 are set against the "T" shaped hole 2130, and the front end of the door hanger 1 can pass through the "T" shaped hole 2130 and The quasi-opening groove 20 is pressed against the backing plate 223, so that the cam 22 rotates relative to the bracket 2, and at the same time, the lock hook 220 passes through the hanging hole 10 from the lower side and is fastened, and the door body is locked under the action of the elastic member 23. 100 is pulled toward the door front panel 200 and locked.

Further, referring to FIG. 6 and FIG. 13 , as a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, the bracket 21 is also provided with an arc-shaped hole 214 , and the arc-shaped touch part 225 penetrates the arc. In the shaped hole 214, like this, once the cam 22 rotates, its protruding portion 224 and arc-shaped touch portion 225 can simultaneously touch the trigger button 31 installed on the microswitch 3 on both sides of the support 21, and the structure is ingenious.

Further, please refer to Fig. 6, Fig. 7 and Fig. 10 to Fig. 13, as a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, each fixing structure includes two laterally protruding brackets 21. The pin shaft 215 and the two clips 216, each micro switch 3 is respectively provided with two shaft holes matching the pin shaft 215, the micro switch 215 is sleeved on the pin shaft 215 through the shaft holes, and the clips 216 buckle Close on both sides of the micro switch 3. This fixing structure and fixing method make the installation and disassembly of the micro switch 3 convenient, the connection is reliable after fixing, and the assembly position is accurate.

Further, please refer to Figure 1 to Figure 4, Figure 6, Figure 7, Figure 9, Figure 10 And Fig. 12, as a specific embodiment of the microwave cooking equipment door interlock switch provided by the present invention, the elastic member 23 is a torsion spring, the bracket 21 is provided with a first connection hole 212, and the cam 22 is provided with a second connection hole. In the hole 222 , one end of the torsion spring is plugged into the first connecting hole 212 , and the other end is plugged into the second connecting hole 222 . The torsion spring produces a certain tension between the support 21 and the cam 22 like this, and the cam 22 can be reset; in order to facilitate installation, the first connection hole 212 can be set a little larger, such as a triangle, a quadrangle or other shapes. hole.

Further, please refer to FIG. 8 , as a specific embodiment of the microwave cooking device door interlock switch provided by the present invention, the end of the locking hook 220 is a cylindrical structure. This cylindrical surface makes it easy for the lock hook 220 to hang in the hanging hole 10 of the door hanger 1 when the door is closed, and it is also easy to make it disengage from the hanging hole 10 when the door is opened, without jamming.

The invention also provides a microwave cooking device. Referring to Fig. 1 and Fig. 14, the microwave cooking equipment includes a door body 100 and a door front panel 200, and the door body 100 and the door front panel 200 are locked and controlled by a door body interlocking system, and the door lock interlocking system includes at least two of the above-mentioned doors body interlock switch. Of course, one door body interlock switch can be installed with two micro switches 3 correspondingly, the door body interlock switch is not limited to two, it can be three or more, and the micro switch 3 is not limited to three, it can also be four and above.

Embodiment 1: Please refer to Figure 1, there are two door interlock switches, one of which is provided with two micro switches 3, and the other door interlock switch is provided with a micro switch 3 , among the three microswitches 3, any two of them are normally open microswitches, and the other is normally closed microswitches; Under the action of the torsion spring, the trigger buttons 30 of each microswitch 3 are not in contact, the two normally open microswitches are in the open state, and the normally closed microswitches are in the closed state. At this time, the entire system is in a power-off state, and microwave cooking The equipment does not work; when the door body 100 is closed, the door hanger 1 touches the cam 22, and the trigger button 30 of each micro switch 3 is touched, wherein the trigger button of the normally closed micro switch is touched first, so that the normally closed micro switch open, and the two normally open micro-switches are closed, and the microwave cooking equipment is now in a standby state.

Embodiment 2: Please refer to Figure 14. There are two door interlock switches. The difference from Solution 1 is that each door interlock switch is provided with two micro switches 3, one of which is a normally closed micro switch. , and the other is a normally open micro switch; that is, the two micro switches include four micro switches in total, and any two micro switches 3 can be selected as normally open switches, and the remaining two micro switches 3 can be set as normally open. close switch; when the door body 100 is opened, the protruding part 224 or the arc-shaped touch part 225 of the cam 22 is not in contact with each micro switch 3 under the action of the torsion spring, and the two normally open micro switches are in the open state, and the two normally open micro switches are in the open state. A normally closed micro switch is in a closed state. At this time, the whole system is in a power-off state, and the microwave cooking equipment does not work; touch, wherein the trigger button 30 of the normally closed micro switch is touched first, so that the two normally closed micro switches are opened, and the two normally open micro switches are closed, and the microwave cooking device is in a standby state at this time.

The microwave cooking equipment provided by the present invention adopts the above-mentioned door body interlocking system, and the distance between the door body 100 and the door front panel 200 is well controllable. The distance between the door body 100 and the door front panel 200 can be well controlled at about 0.3~3mm, which avoids the phenomenon that the distance between the door body 100 and the door front panel 200 is out of control due to the problem of the door hinge system, and effectively solves the problem. Due to the close distance between the door body 100 and the door front panel 200, it is easy to catch fire, and the upper door gap between the door body 100 and the door front panel 200 is too large, resulting in microwave leakage, steam leakage and other problems; The control problem of electrical system of microwave equipment.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

A door body interlock switch, which is used for locking between the door body and the door front panel, is characterized in that it includes a door hanger arranged on the door body, an interlock assembly arranged on the door front panel and at least one micro switch, the interlock assembly includes a bracket, a cam arranged on the bracket and rotatable relative to the bracket, an elastic member for restoring the cam on the bracket, the The door hanger is provided with a positioning plate and a hanging hole, the cam is provided with a lock hook for interlocking with the hanging hole of the door hanger, the micro switch is provided with a trigger button, and the two sides of the bracket are provided with mounting In the fixing structure of the micro switch, the cam is provided with a raised portion and an arc-shaped touch portion for abutting against the trigger button of the micro switch. The door interlock switch according to claim 1, wherein a circular shaft protrudes from one side of the bracket, and the cam includes a sleeve sleeved on the circular shaft, and the cam passes through the The shaft sleeve and the round shaft are rotatably connected with the bracket. The door interlock switch according to claim 2, characterized in that, the circular axis of the bracket is provided with an anti-off protrusion near its end surface, and the inner side of the shaft sleeve of the cam is provided with an anti-off protrusion. The groove through which the block passes, the sleeve is sleeved on the round shaft and the protrusion is located outside the sleeve. The door body interlock switch according to claim 1, wherein the cam is provided with a backing plate that can touch the front end of the hanging hole plate of the door hanger, and the backing plate and the lock An open slot is formed between the hooks, and the bracket has a front end plate, which is provided with a “T”-shaped hole, and the lock hook and the abutting plate of the cam are arranged facing the “T”-shaped hole. The door body interlock switch according to claim 1, wherein an arc-shaped hole is further provided on the bracket, and the arc-shaped touch part is passed through the arc-shaped hole. The door interlock switch according to claim 1, wherein the fixing structure includes two pin shafts and two clips protruding laterally from the bracket, and each of the micro switches is respectively provided with There are two shaft holes adapted to the pin shaft, the micro switch is sleeved on the pin shaft through the shaft holes, and the clips are fastened on both sides of the micro switch. The door interlock switch according to any one of claims 1 to 6, wherein the elastic member is a torsion spring, the bracket is provided with a first connection hole, and the cam is provided with a second connection hole. One end of the torsion spring is inserted into the first connection hole, and the other end is inserted into the second connection hole. A microwave cooking device, comprising a door body and a door front panel, characterized in that the door body and the door front panel are locked and controlled through a door body interlocking system, and the door lock interlocking system includes at least one of the above-mentioned door interlock switch. The microwave cooking device according to claim 8, characterized in that there are two door interlock switches, one of which is provided with two micro switches, and the other door interlock switch is There is a micro switch on the interlock switch, among the three micro switches, any two are normally open micro switches, and the other is normally closed micro switch; when the door is opened, the Under the action of the torsion spring, the protruding part or arc-shaped touch part of the cam does not contact the trigger button of each micro switch, the two normally open micro switches are in the open state, and the normally closed micro switches are in the closed state , at this time, the entire system is in a power-off state, and the microwave cooking equipment does not work; when the door body is closed, the door hangs against the cam, and the trigger buttons of each of the micro switches are touched, and the normally closed The trigger button of the micro switch is touched first, so that the normally closed micro switch is turned on, and the two normally open micro switches are turned off, and the microwave cooking device is in a standby state at this time. The microwave cooking equipment according to claim 8, characterized in that there are two door interlock switches, and each of the door interlock switches is provided with two micro switches, one of which is a normally closed micro switch. The other is a normally open micro switch; when the door is opened, the protruding part or arc-shaped touch part of the cam does not contact each of the micro switches under the action of the torsion spring, The two normally open micro switches are in the open state, and the two normally closed micro switches are in the closed state. At this time, the whole system is in the power off state, and the microwave cooking equipment does not work; when the door body is closed, the door hanging Pushing against the cam, the trigger button of each micro switch is touched, wherein the trigger button of the normally closed micro switch is touched first, so that the two normally closed micro switches are opened, and the two normally open micro switches are closed , the microwave cooking appliance is now in standby mode.