CN211238019U

CN211238019U - Safety protection switch and have its cooking utensil

Info

Publication number: CN211238019U
Application number: CN202020243082.3U
Authority: CN
Inventors: 刘建华; 黄国静
Original assignee: GUANGDONG TREDY ELECTRIC CO Ltd
Current assignee: GUANGDONG TREDY ELECTRIC CO Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-08-11
Anticipated expiration: 2030-03-03

Abstract

The utility model relates to the technical field of household appliances, in particular to a safety protection switch and a cooking utensil with the same, which comprises a switch feeler lever and a safety switch with a trigger spring plate, wherein the switch feeler lever is provided with a horizontally arranged contact part, an obliquely arranged trigger part and a horizontally arranged holding part, and the contact part, the trigger part and the holding part are sequentially connected; the end part of the trigger elastic sheet is provided with a contact, the safety switch is in a disconnected state when the contact is contacted with the contact part, the safety switch can be triggered to be closed in the contact process of the contact and the trigger part, and the safety switch keeps in a closed state when the contact is contacted with the holding part. The utility model discloses a but safety protection switch extension switch feeler lever triggers the closed stroke that triggers of safety switch, can effectively avoid the influence that switch feeler lever position deviation switched on to the circuit, cooking utensil is favorable to safety protection switch's after-sales maintenance because apron, hou gai are easily dismantled from the card eaves.

Description

Safety protection switch and have its cooking utensil

Technical Field

The utility model relates to a domestic appliance's technical field, more specifically relates to a safety protection switch and have its cooking utensil.

Background

Whether the electric circuits of the cooking appliances such as the electric pressure cooker are conducted or not is mostly irrelevant to whether the cooker cover is covered or not or whether the cooker cover is covered in place, in other words, how the covering condition of the cooker cover does not influence the conduction of the electric circuits of the cooking appliances. Such a solution presents the following problems: firstly, if the cover is not closed in place, a user conducts a circuit of the cooking appliance, the heating plate works, the inner pot cannot be effectively sealed, the pressure in the pot cannot be raised, the electric pressure cooker cannot normally work, and the cooking effect cannot be achieved; secondly, the cover is not closed in place, the cover is not completely buckled with the outer pot, even if the pressure can be raised, when the pressure reaches a certain value, the cover can be opened, so that the safety accident of explosion of the pot can be caused.

Chinese patent CN201020652622X discloses a cover-closing in-place safety device of an electric pressure cooker, which comprises a microswitch and a push rod, wherein when the cover of the electric pressure cooker is not covered or the cover is covered but the cover is not in place, the movable push rod can not automatically push a trigger elastic sheet to act under the elastic force action of the trigger elastic sheet of the microswitch so as to close the microswitch, at the moment, a circuit can not be conducted, and the electric pressure cooker can not work; when the cover is closed in place, the cover pushes the push rod to push and press the elastic sheet to the micro switch, so that the micro switch is closed, the circuit is conducted, and the electric pressure cooker starts to work. Its simple structure, low in manufacturing cost, during the use fault rate are low, but: on one hand, the trigger stroke of the movable push rod for triggering the micro switch is short, and the conduction of a circuit is easily influenced when the position of the movable push rod deviates; on one hand, the microswitch is arranged inside the pot body, so that the after-sale maintenance difficulty of the product is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide one kind and can effectively avoid the safety protection switch of the influence that movable switch feeler lever positional deviation switched on to the circuit, still provide one kind can effectively avoid switch feeler lever positional deviation to the influence that the circuit switched on, do benefit to the cooking utensil of safety protection switch after-sales maintenance.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the safety protection switch comprises a switch contact rod and a safety switch with a trigger elastic sheet, wherein the switch contact rod is provided with a horizontally arranged contact part, an obliquely arranged trigger part and a horizontally arranged retaining part, and the contact part, the trigger part and the retaining part are sequentially connected; the end part of the trigger elastic sheet is provided with a contact, the safety switch is in an off state when the contact is contacted with the contact part, the contact and the trigger part can trigger the safety switch to be closed in the contact process, and the safety switch keeps in the on state when the contact is contacted with the holding part.

The safety protection switch of the utility model is provided with the contact part, the trigger part and the holding part on the switch feeler lever, and the contact can be contacted with different positions of the switch feeler lever by pushing the switch feeler lever to move so as to change or hold the state of the safety switch; the contact can trigger the safety switch to be closed in the sliding process of the contact along the trigger part by pushing the switch contact rod; the safety switch is in a closed state when the contact contacts with the holding part, so that the triggering stroke of triggering the safety switch to be closed by the switch contact rod is effectively prolonged, and the influence of the position deviation of the switch contact rod on the circuit conduction can be effectively avoided.

Furthermore, the switch comprises a supporting piece, wherein a push rod is arranged at one end of the switch contact rod, and the supporting piece is provided with a first through hole which can accommodate the push rod to pass through. The support member can be arranged to facilitate the installation of the switch contact rod.

And furthermore, the switch also comprises a spring, one end of the spring is connected to the supporting piece, and the other end of the spring is connected to the other end of the switch contact rod. External force is applied to push the switch contact rod to move so as to change the state of the safety switch, and the switch contact rod can reset under the action of the spring after the external force action is eliminated.

Further, the contact is a disk-shaped structure. The disk-like structure is preferred in view of the combination of ease of manufacture and aesthetic appearance of the product, and is not intended to be a limiting specification.

The utility model also provides a cooking utensil, including the pot body and the pot cover of rotatable lock, still include as before the safety protection switch, the pot cover is equipped with the feeler, the pot body is equipped with the card eaves, the card eaves tip is located to the switch feeler lever, the contact sets up with the contact setting of switch feeler lever, feeler lever and card eaves swing joint.

In the process of rotationally fastening the cooker cover, the contact block rotates along with the cooker cover to act on the switch contact rod to push the switch contact rod to move, and the safety switch can be triggered to be closed when the contact is contacted with the triggering part; when the contact contacts with the holding part, the safety switch is kept in a closed state, and the trigger stroke of triggering/keeping the safety switch closed by the switch contact rod is longer, so that the circuit can be ensured to be conducted in the safe buckling range of the pot cover, and the phenomenon that the pot cover cannot be conducted due to position deviation relative to the pot body is avoided.

Furthermore, the clamping eaves are clamped with a cover plate, and the switch contact rod is arranged in a cavity formed between the cover plate and the clamping eaves. The cover plate can be clamped with the clamping eaves to facilitate operation, maintenance and replacement of the switch contact rod.

Furthermore, the lower part of the clamping eaves is connected with a rear cover, and the safety switch is arranged in a cavity formed between the rear cover and the pot body. The safety switch is arranged outside the pot body instead of inside the pot body, so that the operation, maintenance and replacement of the safety switch are facilitated.

Furthermore, the rear cover is detachably connected with the clamping eaves. The rear cover can be conveniently and quickly assembled and disassembled with the pot body.

Furthermore, the rear cover is provided with heat dissipation holes. The heat dissipation holes can be beneficial to dissipating heat generated by the work of the safety switch or other electric devices.

Furthermore, the bottom of the clamping eave is provided with a second through hole, and the contact passes through the second through hole and contacts with the switch contact rod. The contact can smoothly pass through in the second through-hole, is convenient for realize moving switch feeler lever and changes safety switch's state.

Compared with the prior art, the beneficial effects of the utility model are that:

the safety protection switch of the utility model has the advantages that the contact can trigger the safety switch to be closed in the contact process with the contact part, the safety switch keeps a closed state when the contact is contacted with the holding part, the trigger stroke of the switch contact rod for triggering the safety switch to be closed is prolonged, and the influence of the position deviation of the switch contact rod on the circuit conduction is effectively avoided;

the cooking utensil of the utility model has longer triggering travel of the switch contact rod triggering the safety switch to be closed, thereby realizing the circuit conduction in the safe buckling range of the pot cover and avoiding the phenomenon that the pot cover can not be conducted due to the position deviation of the pot cover relative to the pot body; and because apron, back lid are easily dismantled from the card eaves, are favorable to cooking utensil's after-sales maintenance.

Drawings

Fig. 1 is a schematic structural diagram of a safety protection switch according to a first embodiment;

fig. 2 is a schematic structural view of the cooking appliance in the open-lid state according to the second embodiment;

FIG. 3 is an enlarged schematic view of detail A of FIG. 2;

FIG. 4 is a schematic structural view of a cooking apparatus in a closed state according to a second embodiment;

FIG. 5 is an enlarged schematic view of detail B of FIG. 4;

in the drawings: 100-safety protection switch; 110-switch feeler lever; 111-a contact; 112-a trigger; 113-a holding portion; 114-a top bar; 120-a safety switch; 121-triggering the elastic sheet; 122-a contact; 130-a support; 140-a spring; 200-a cooking appliance; 210-a pot body; 211-clamping eaves; 212-a second via; 213-cover plate; 220-pot cover; 221-a contact block; 230-a rear cover; 231-heat dissipation holes.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example one

As shown in fig. 1, an embodiment of the safety protection switch 100 of the present invention includes a switch contact rod 110 and a safety switch 120 having a trigger spring 121, wherein the switch contact rod 110 is provided with a horizontally disposed contact portion 111, an obliquely disposed trigger portion 112 and a horizontally disposed retaining portion 113, and the contact portion 111, the trigger portion 112 and the retaining portion 113 are connected in sequence; the end of the trigger spring 121 is provided with a contact 122, the safety switch 120 is in an open state when the contact 122 contacts the contact portion 111, the safety switch 120 can be triggered to be closed when the contact 122 contacts the trigger portion 112, and the safety switch 120 keeps in a closed state when the contact 122 contacts the retaining portion 113.

The present embodiment can achieve the contact point 122 to contact with different positions of the switch contact bar 110 by pushing the switch contact bar 110 to move so as to change or maintain the state of the safety switch 120: the contact 122 is in an open state of the safety switch 120 when contacting the contact portion 111, the contact 122 may trigger the safety switch 120 to be closed during the contact with the contact portion 111, and the safety switch 120 maintains the closed state when the contact 122 contacts the holding portion 113. After the safety switch 120 is triggered, the safety switch 120 is in a closed state when the contact 122 contacts the triggering part 112 and the holding part 113, so that the triggering stroke of the switch contact rod 110 for triggering the safety switch 120 to be closed can be effectively prolonged, and the influence of the position deviation of the switch contact rod 110 on circuit conduction is avoided. In order to facilitate the installation of the switch contact rod 110, the safety protection switch 100 of the embodiment further includes a supporting member 130, wherein one end of the switch contact rod 110 is provided with a push rod 114, and one side of the supporting member 130 is provided with a first through hole for allowing the push rod 114 to pass through. This also enables the push rod 114 to be pushed by an external force to move the switch contact 110. In order to realize that the switch contact bar 110 can be rapidly restored when the external force is removed, the spring 140 is connected to the other end of the switch contact bar 110, and the spring 140 is connected between the support 130 and the switch contact bar 110; with this arrangement, the external force is applied to push the switch contact rod 110 to move to change the state of the safety switch 120, and after the external force is removed, the switch contact rod 110 can be reset under the action of the spring 140.

In addition, the contacts 122 of the present embodiment are disk-shaped structures; however, the arrangement of the disk-like structure is preferable in consideration of the ease of manufacturing, and is not limited to the above, and the shape of the contact 122 may be adjusted according to the actual application.

Example two

Fig. 2 to 5 show an embodiment of a cooking device 200 of the present invention, including the pot body 210 and the pot cover 220 of rotatable lock, the safety protection switch 100 of the first embodiment is further included, the pot cover 220 is provided with a contact block 221, the pot body 210 is provided with a clamping brim 211, the switch contact rod 110 is arranged at the end of the clamping brim 211, the contact 122 is in contact with the switch contact rod 110, and the contact block 221 is movably connected with the clamping brim 211. In this embodiment, the second through hole 212 is formed at the bottom of the clamping brim 211, the contact 122 passes through the second through hole 212 to contact with the switch contact rod 110, and the holding portion 113 of the switch contact rod 110 in this embodiment can be attached to the bottom of the clamping brim 211 to ensure the stable movement of the switch contact rod 110 and maintain the closed state of the safety switch 120.

In the process of rotationally fastening the pot cover 220: when no external force acts on the switch contact lever 110, the contact 122 contacts the contact portion 111 of the switch contact lever 110, and the safety switch 120 is in an off state; the contact block 221 rotates along with the pot cover 220 to act on the switch contact rod 110 to push the switch contact rod 110 to move, and meanwhile, the spring 140 is compressed under the force, so that the contact 122 can trigger the safety switch 120 to be closed in the sliding process along the trigger part 112; when the switch contact rod 110 is continuously pushed to move until the contact 122 contacts with the holding part 113, the safety switch 120 keeps the closed state, the trigger stroke for triggering the switch contact rod 110 and keeping the safety switch 120 closed is longer, the conduction of the circuit can be ensured in the safe buckling range of the pot cover 220, and the phenomenon that the pot cover 220 cannot be conducted due to position deviation relative to the pot body 210 is avoided, as shown in fig. 4 and 5.

During the process of rotating to open the pot lid 220: the contact block 221 rotates along with the lid 220 to be far away from the top rod 114, the spring 140 recovers to the original length, the push switch contact rod 110 moves, the contact 122 moves to be in contact with the contact part 111, the safety switch 120 is disconnected, and the circuit is disconnected, as shown in fig. 2 and 3.

It should be noted that, in the present embodiment, the movement state of the safety switch 120 is changed by the movement of the switch contact rod 110 relative to the contact 122, but the scheme of changing the installation positions of the switch contact rod 110 and the safety switch 120, which is to install the safety switch 120 on the lid 220, install the switch contact rod 110 on the ledge 211, and change the state of the safety switch 120 by the movement of the safety switch 120 relative to the switch contact rod 110, also falls within the protection scope of the present invention; in this embodiment, the switch contact rod 110 is installed at the end of the clamping ledge 211, and the contact block 221 touches the switch contact rod 110 to change the contact position of the contact 122 and the switch contact rod 110, so as to change the state of the safety switch 120, but the switch contact rod 110 is installed at the contact block 221, so that the switch contact rod 110 rotates along with the pot cover 220 to make the switch contact rod 110 move relative to the safety switch 120, so as to change the state of the safety switch 120, which is a scheme for changing the installation position of the switch contact rod 110, also falls into the protection scope of the present invention.

The cover plate 213 is fastened to the fastening edge 211, and the switch contact rod 110 is disposed in a cavity formed between the cover plate 213 and the fastening edge 211. Therefore, the cover plate 213 and the clamping brim 211 can be quickly detached, and the switch contact rod 110 can be conveniently operated, maintained and replaced. It should be noted that the supporting member 130 of the safety protection switch 100 may be connected to the clamping edge 211, or may be integrally formed with the clamping edge 211; the connection between the clamping eaves 211 and the cover plate 213 is not limited to the clamping connection, but may also be a detachable connection such as a threaded connection, a key connection, a pin connection, etc.

The lower part of the clamping brim 211 is connected with a rear cover 230, and the safety switch 120 is arranged in a cavity formed between the rear cover 230 and the pot body 210; wherein, the rear cover 230 is detachably connected with the clamping brim 211. The safety switch 120 is arranged outside the pot body 210 instead of inside the pot body 210 and is arranged in a cavity formed between the rear cover 230 and the pot body 210, so that the appearance is attractive, and the operation, maintenance and replacement of the safety switch 120 are facilitated; the rear cover 230 and the clamping brim 211 of the present embodiment can be detachably connected by clamping, screw connection, key connection, pin connection, etc. In addition, in this embodiment, the sliding blocks may be disposed on two sides of the back cover 230, the sliding slots are disposed on the pot body 210, the sliding blocks slide in the sliding slots, and when the safety switch 120 is maintained after sale, the back cover 230 only needs to slide downwards relative to the pot body 210 to expose the safety switch 120, so that the operation is convenient and fast. In order to dissipate the heat of the components in the cavity formed between the rear cover 230 and the pot body 210 in time, the rear cover 230 is provided with heat dissipating holes 231.

The cooking device 200 in this embodiment may be an electric pressure cooker, an electric rice cooker, a juicer, an air fryer, or other electrical devices including a rotatably fastened pot body 210 and a pot cover 220, and the closed circuit of the safety switch 120 is kept in a conducting state within a safe fastening range. The clamping brim 211 and the contact block 221 can utilize the structures of the cooker cover 220 and the cooker body 210, and can also be newly arranged structures of the cooker cover 220 and the cooker body 210.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A safety protection switch (100) comprises a switch contact rod (110) and a safety switch (120) with a trigger spring piece (121), and is characterized in that the switch contact rod (110) is provided with a horizontally arranged contact part (111), an obliquely arranged trigger part (112) and a horizontally arranged retaining part (113), and the contact part (111), the trigger part (112) and the retaining part (113) are sequentially connected; the end of the trigger elastic sheet (121) is provided with a contact (122), the safety switch (120) is in an off state when the contact (122) is in contact with the contact part (111), the safety switch (120) can be triggered to be closed when the contact (122) is in contact with the trigger part (112), and the safety switch (120) keeps in a closed state when the contact (122) is in contact with the holding part (113).

2. The safety protection switch (100) of claim 1, further comprising a support member (130), wherein the switch contact rod (110) has a top rod (114) at one end, and the support member (130) has a first through hole for receiving the top rod (114) therethrough.

3. The safety protection switch (100) of claim 2, further comprising a spring (140), wherein one end of the spring (140) is connected to the support (130), and the other end of the spring (140) is connected to the other end of the switch trolley (110).

4. The safety switch (100) as claimed in any of claims 1 to 3, wherein the contact (122) is of a disc-like structure.

5. A cooking utensil (200), including rotatable pot body (210) and pot cover (220) of lock, characterized by, still include the safety protection switch (100) of any one of claims 1 to 4, pot cover (220) are equipped with feeler block (221), pot body (210) are equipped with card eaves (211), card eaves (211) tip is located to switch feeler lever (110), contact (122) and switch feeler lever (110) contact setting, feeler block (221) and card eaves (211) swing joint.

6. The cooking utensil (200) according to claim 5, wherein the clamping edge (211) is clamped with a cover plate (213), and the switch contact rod (110) is arranged in a cavity formed between the cover plate (213) and the clamping edge (211).

7. The cooking utensil (200) according to claim 5, wherein a rear cover (230) is connected to the lower portion of the clamping ledge (211), and the safety switch (120) is arranged in a cavity formed between the rear cover (230) and the pot body (210).

8. The cooking appliance (200) according to claim 7, wherein the rear cover (230) is detachably connected to the clamping ledge (211).

9. The cooking appliance (200) according to claim 7, wherein the rear cover (230) is provided with a heat dissipation hole (231).

10. The cooking appliance (200) according to any one of claims 5 to 9, wherein a second through hole (212) is formed at the bottom of the clamping edge (211), and the contact (122) passes through the second through hole (212) and contacts with the switch contact rod (110).