CN215383505U - Food mixer's safety switch and food mixer - Google Patents

Abstract

The utility model discloses a safety switch, which comprises a power supply key and a safety rod, wherein the power supply key is connected with the safety rod; the safety lever is set to have two states: a safe state and a protection state; the power key is set to have two states: an on state and an off state; the power key is connected or associated with the safety lever and may be set to an on state only when the safety lever is in a safe position. According to the safety switch, the technical effect that the stirrer can be started only under the condition that the cup body is correctly installed is achieved through the safety rod, the return device and the technical means of adding the limiting step on the key. And when the cup body is accidentally separated, the power supply can be automatically cut off, so that the safety is further ensured. The safety switch provided by the utility model has the advantages of simple structure, few components, small occupied space, convenience in installation, low failure rate and better safety performance. The utility model also discloses a food mixer.

Description

Food mixer's safety switch and food mixer

Technical Field

The utility model relates to the field of small household appliance starting switches, in particular to a safety switch of a food mixer and the food mixer.

Background

The food mixer is generally composed of a cup body and a main body, and a cutter is driven to rotate at a high speed for cutting by a motor arranged in the main body. Because the cup body is movably butted with the main body in a separable mode, a motor rotating shaft in the main body and a cutter in the cup body need to be connected through a coupler to achieve synchronous rotation. However, if the motor is started when the main body is not mounted or the cup body is not correctly assembled, a safety problem is easily caused. Therefore, a separate control safety switch is required to be additionally arranged, so that the motor can be started only after the cup body and the main body are correctly butted and assembled, and safety accidents are avoided.

The existing household mixer with a starting switch is provided with a starting switch, a safety switch or two safety switches which are matched together. The existing structure cost is one or two more switches and leads, screws, safety rods and the like corresponding to the connecting switches, the internal structure of a product is complex, the occupied space is large, the number of assembling procedures is large, and the failure rate is high.

Therefore, those skilled in the art have made efforts to develop a safety switch capable of implementing both the starting power supply and the safety protection with a simple structure.

SUMMERY OF THE UTILITY MODEL

In view of the above defects in the prior art, the technical problem to be solved by the present invention is that the existing safety switch has a complex structure, a large volume and a complicated assembly.

In order to achieve the purpose, the utility model provides a novel safety switch which comprises a power supply key and a safety rod. The safety lever is set to have two states: a safe state and a protected state. The power key is set to have two states: an on state and an off state. The power is switched on when the power button is in the on state and switched off when the power button is in the off state. The power key is connected or associated with the safety lever and may be set to an on state only when the safety lever is in the safety position. When the safety lever is switched from the safety state to the protection state, the power supply key is automatically switched from the on state to the off state, so that the use safety is ensured.

In a preferred embodiment of the present invention, the power button includes a button and a switch, and the button includes a contact rod and a first return device. The first return device is an elastic piece, and the contact rod is connected with the key or is an integral body. When the key is in the original state, the contact rod is pressed down to contact a contact on the switch, and the power supply is triggered to be switched on; at the moment, the key is in a connection state, and the first return device is in a state of applying elastic force; when the key returns to the original position under the action of the elastic force of the first return device, the contact rod is separated from the contact on the switch, the power supply is cut off, and the key is in a disconnected state.

Further, the safety lever includes a through notch, and the contact lever is configured such that the switch can be contacted only through the through notch of the safety lever; the contact rod comprises a limiting step; when the safety rod is in a protection state, the limiting step is clamped at the edge of the through notch, and the contact rod cannot penetrate through the through notch; when the safety lever is in a safe state, the limiting step is not blocked any more, and the contact lever can penetrate through the through notch.

Further, a safety lever is provided in connection with the cup of the blender, the safety lever being in a safe state when the cup is properly installed and in a protected state when no cup or the cup is improperly installed.

Further, the safety lever comprises a second return device, the second return device is an elastic piece, is connected with the safety lever and provides elastic force, and therefore the safety lever can be switched between the protection state and the safety state.

Furthermore, one side of the limiting step of the contact rod further comprises a reset inclined plane, and when the key is pressed down, the reset inclined plane is aligned with the through notch. When the safety rod is switched from the safety state to the protection state under the action of the elastic force of the second return device, the through notch is contacted with the reset inclined plane, and the key is pushed to return to the original position under the action of the elastic force. At this time, the contact lever is released from contact with the switch, and the power supply is cut off. By this operation, safety is further ensured.

Therefore, the utility model provides a novel safety switch, and the technical effect that the stirrer can be started only under the condition that the cup body is correctly installed is realized through the safety rod, the return device and the technical means of adding the limiting step on the key. And when the cup body is accidentally separated, the power supply can be automatically cut off, so that the safety is further ensured. The safety switch provided by the utility model has the advantages of simple structure, few components, small occupied space, convenience in installation, low failure rate and better safety performance.

The utility model also provides a multifunctional cup cover for the food mixer, which comprises a main cover body and an additional cover body, wherein the main cover body comprises a beverage outlet, and one part of the additional cover body comprises a filter screen. The additional cover is arranged to be movable relative to the main cover. When the filter screen removed the drink export, multi-functional bowl cover was in the filter screen mode, and at this moment, the drink flows out after the filter screen filters.

Further, additional lid still includes directly drinks the mouth, when directly drink the mouth and remove the position that the drink export coincides mutually, and multi-functional bowl cover is in directly drinking the mode, and the drink can directly flow out through not filtering.

Furthermore, the additional cover body further comprises an opening-free area, when the opening-free area moves to the position where the drink outlets coincide with each other, the multifunctional cup cover is in a closing mode, the drink outlets are covered by the bottom of the additional cover body, and drinks cannot flow out.

Furthermore, the multifunctional cup cover also comprises a plurality of mode indicating points, and the mode of the cup cover at the time can be judged through the mode indicating points.

Further, the main cover body and the additional cover body respectively comprise a positioning mechanism, and the additional cover body can move in a track defined by the positioning mechanisms through cooperation between the positioning mechanisms, so that the operation is convenient.

Furthermore, the positioning mechanism also comprises a plurality of positioning points, and the additional cover body can be accurately moved to a specified position through the positioning points so as to facilitate operation.

Furthermore, the position of the positioning point corresponds to the position of the mode indicating point, and the characteristic positioning point corresponds to the multifunctional cup cover and is in a specific mode.

Furthermore, the multifunctional cup cover also comprises an exhaust hole, so that gas can enter when drinking, and the beverage can flow out more easily under the action of air pressure.

Furthermore, the multifunctional cup cover also comprises an exhaust hole plug, and when the additional cover body is in a closing mode, the exhaust hole plug can plug the exhaust hole to prevent the beverage from flowing out of the exhaust hole.

In a preferred embodiment of the present invention, the multifunctional cup lid comprises a main lid body and an additional lid body, wherein the main lid body is configured to be fixed on the upper portion of the cup body of the blender, the main lid body comprises a beverage outlet, and the additional lid body comprises a filter screen. The main cover body center is provided with a mounting hole, the additional cover body center is provided with a mounting post, and the additional cover body can be mounted on the upper portion of the main cover body in a mode that the mounting post on the additional cover body is clamped into the mounting hole of the main cover body. The additional cover body can rotate relative to the main cover body by taking the mounting post as a center. In the rotation process, when the filter screen port moves to the drink outlet, the multifunctional cup cover is in the filter screen mode, and at the moment, the drink flows out after being filtered by the filter screen.

Further, additional lid still is including directly drinking the mouth, and the rotatory in-process of additional lid, directly drinks mouthful when the drink export, and multi-functional bowl cover is in directly drinking the mode, and the drink can directly flow out through not filtering.

Further, additional lid still includes no open area, and the rotatory in-process of additional lid, when no open area removed the drink export, multi-functional bowl cover was in the mode of closing, and the drink export is closed, and the drink can't flow out.

Furthermore, the main cover body also comprises a circular track, and the track is a circular groove which is arranged on the main cover body and is concentric with the mounting hole; the additional cover further comprises a rail wheel. The position of the track wheel corresponds to the track, and when the additional cover body and the main cover body are combined into a whole, the lower part of the track wheel is contacted with the bottom of the track groove. The rail wheel may further define a rotation trajectory of the additional cover body for convenient operation.

Furthermore, the bottom of the track also comprises a plurality of positioning points, and the bottom of the track is further concave at the positions of the positioning points to form pits. When the rail wheel moves to the position of the positioning point, the bottom of the rail wheel is clamped into the concave pit of the positioning point, and a slightly larger torsion force needs to be applied to further rotate the additional cover body. By means of the positioning points, the operator can sense the arrival of the additional cover body at a specific position during the rotation of the additional cover body.

Further, the main cover body also comprises a mode indicating point; the additional cover body also comprises a plurality of mode indicating marks; the position of the mode indicating point, the position of the mode indicating mark and the position of the positioning point have a corresponding relation. When the additional cover body rotates to a specific positioning point, the specific mode indicating mark is aligned with the position of the mode indicating point. The operator can determine which mode the multifunctional cover is in at the time by observing which mode indication mark the mode indication point is aligned with.

Furthermore, the main cover body also comprises an exhaust hole, so that gas can enter when drinking, and the beverage can flow out more easily under the action of air pressure. The additional cover body further comprises an exhaust hole plug, and the position of the exhaust hole plug is set as that: when the additional cover body is rotated to a closed mode, the vent hole plug can block the vent hole to prevent the beverage from flowing out of the vent hole.

In another preferred embodiment of the present invention, the other features are the same as those of the previous embodiment, except that the additional cover does not include a straight spout, but has a notch in a partial region, and when the notch of the additional cover is rotated to a beverage outlet position, the beverage can directly flow out through the beverage outlet.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic diagram of a safety switch according to a preferred embodiment of the present invention;

FIG. 2 is an overall cross-sectional view of the blender including the safety switch of FIG. 1;

FIG. 3 is an enlarged detail view at A in FIG. 2;

FIG. 4 is an exploded schematic view of FIG. 1;

FIG. 5 is a perspective view of the multi-functional cup lid according to a preferred embodiment of the present invention;

FIG. 6 is a perspective view of the main cover of FIG. 5;

FIG. 7 is a top perspective view of the additional cover of FIG. 5;

FIG. 8 is a perspective view from below of FIG. 7;

FIG. 9 is a top plan view of the multi-functional cap of FIG. 5 in a filter mode;

FIG. 10 is a top plan view of the multi-functional cap of FIG. 5 in a drink-through mode;

fig. 11 is a top plan view of the multi-functional lid of fig. 5 in a closed mode.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the utility model is not limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

Example 1

Fig. 1-3 illustrate a safety switch installed in a mixer. As shown in fig. 1 and 3, the safety switch includes a button 10 and a switch 16, and the button 10 includes a contact rod 11 and a button return spring 12. The key return spring 12 is connected with the key 10; the contact lever 11 is integral with the key 10. The switch 16 is mounted in a switch bracket 17. When the key 10 is in an original state, the contact rod 11 is pressed down to contact a contact on the switch 16, the power supply is triggered to be switched on, at the moment, the key 10 is in a switched-on state, and the key return spring 12 is in a compressed state; when the key 10 returns to the original position by the elastic force of the key return spring 12, the contact lever 11 is separated from the contact point of the switch 16, the power supply is cut off, and the key 10 is in the off state.

The safety lever 13 includes a through notch 15, and the contact lever 11 is configured to contact the switch 16 only through the through notch 15 of the safety lever 13; the contact lever 11 includes a limit step 18; when the safety lever 13 is in a protection state, the limiting step 18 is clamped at the edge of the through notch 15, and the contact lever 11 cannot penetrate through the through notch 15; when the safety lever 13 is in the safety position, the stop step 18 is no longer blocked and the contact rod 11 can pass through the through-opening 15.

The bottom of safety lever 13 includes a safety lever return spring 14. The elastic force is provided by safety lever return spring 14 so that safety lever 13 can be moved downward by the external force and return to the original position after the external force is removed.

The safety switch is integrally installed in the main body 1 of the mixer, and the cup body 2 of the mixer is installed on the upper part of the main body 1.

When the cup body 2 is not mounted into the main body 1, or the cup body 2 is not properly mounted into the main body 1, the safety lever 13 is urged to the uppermost position by the elastic force of the safety lever return spring 14. At this time, the limit step 18 is caught at the edge of the through notch 15, the contact lever 11 cannot pass through the through notch 15, and the safety lever 13 is in a protection state. The key 10 cannot be pressed and the power cannot be turned on.

When cup 2 is correctly mounted on body 1, the upper portion of safety lever 13 contacts cup 2, and cup 2 presses safety lever 13 downward, at which time through notch 15 moves to a position where it cannot block limit step 18. The stop step 18 is no longer blocked, the contact rod 11 can pass through the through notch 15, the key 10 can be pressed, and the power supply can be switched on.

The contact lever 11 also includes a reset ramp 19 below the limit step 18, and when the key 10 is pressed, the reset ramp 19 is aligned with the through notch 15 but does not contact, and the power is turned on. If the cup 2 is now detached from the body 1, the safety lever 13 is moved upwards by the safety lever return spring 14, and the through notch 15 comes into contact with the return ramp 19. Under the action of the elastic force, the reset inclined plane 19 pushes the key 10 to move outwards, and finally the key 10 returns to the original position. At this time, the contact lever 11 is released from contact with the switch 16, and the power supply is cut off. By this operation, safety is further ensured.

Example 2

A food mixer as shown in fig. 1-4 comprises a body 1 and a cup body 2.

The safety switch shown in embodiment 1 is installed in the main body 1. The main body 1 further comprises a motor 7, a stirring knife 8, a power supply access wire 9, a key track hole 4, a safety rod track hole 5 and a positioning groove 6; the cup body 2 includes a locating lug 3 at the bottom.

The top of the key 10 is penetrated through the key track hole 4, and the top of the safety lever 13 is penetrated through the safety lever track hole 5. The positioning projection 3 is matched with the positioning groove 6, and the cup body 2 can be arranged in the main body 1 only when the positioning projection 3 is clamped into the positioning groove 6.

When the cup body 2 is not arranged in the main body 1, the stirring knife 8 is exposed, at the moment, the key 10 cannot be pressed down, the stirrer cannot be powered on, and the safety can be ensured.

Only when the cup body 2 and the main body 1 are correctly installed, the upper part of the safety lever 13 is in contact with the cup body 2, the safety lever 13 is pressed downwards by the cup body 2, and the through notch 15 moves to a position where the limiting step 18 cannot be blocked. The stop step 18 is no longer blocked, the contact rod 11 can pass through the through notch 15, the key 10 can be pressed, and the power supply can be switched on.

When the mixer works, if the cup body 2 is pulled out of the main body 1, the safety rod 13 moves upwards under the action of the safety rod return spring 14, and the through notch 15 is contacted with the return inclined surface 19. Under the action of the elastic force, the reset inclined plane 19 pushes the key 10 to move outwards, and finally the key 10 returns to the original position. At this time, the contact lever 11 is released from the switch 16, the power supply is cut off, and the motor is stopped to ensure safety.

Example 3

As shown in the figures 5-11 of the drawings,

the multifunctional cup cover comprises a circular main cover body 30 and an additional cover body 40 with a round shape and a notch at one side.

Wherein the content of the first and second substances,

the bottom of the main cover body 30 is fixedly arranged with the top of the cup body of the food mixer.

The main lid 30 is provided with a circular mounting hole 31 at the center, the additional lid 40 is provided with a cylindrical mounting post 41 at the center, and the additional lid 40 is mounted on the upper portion of the main lid 30 by inserting the mounting post 41 into the mounting hole 31.

The top of the main cover 30 comprises a track 32 which is concentrically arranged with the mounting hole 31, the track 32 is a circular groove, the bottom of the circular groove further comprises three positioning points 33, and the bottom of the track 32 is further concave at the positions of the positioning points 33 to form a pit.

The main cover body 30 is also provided with a beverage outlet 34 at the top.

The additional cover 40 has a circular shape as a whole, and the bottom is in contact with the top of the main cover 30. The middle portion includes a star-shaped protrusion that facilitates manual rotation of the additional cover 40. The star-shaped convex part divides the bottom of the additional cover body 40 into three parts, wherein one part is a notch; one of the other two parts comprises a screen 43, the other part is made of a complete material and does not comprise any openings; the open portion may cover the drink outlet 34. The strainer 43 is composed of a hollowed rectangular hole. The shape and size of the sieve 43 corresponds to the shape and size 34 of the beverage outlet of the main cap 30. When the sieve 43 is rotated to the position of the drink outlet 34, the drink outlet 34 may be aligned with the sieve 43.

The additional cover 40 also includes a rail wheel 42. The position of the rail wheels 42 corresponds to the rail 32. When the additional cover 40 is combined with the main cover 30, the lower part of the rail wheel 42 contacts the bottom of the groove of the rail 32. The track wheel 42 may further define the rotational trajectory of the additional cover 40 for ease of operation. When the rail wheel 42 moves to the position of the three positioning points 33 of the rail 32, the bottom of the rail wheel 42 will be snapped into the recesses of the positioning points 33, and a slightly larger torque force needs to be applied to further rotate the additional cover 40. By means of the positioning points 33, the operator can perceive that the additional cover body 40 has reached a specific position during the rotation of the additional cover body 40.

The upper edge of the main cover 30 is provided with a mode indicating point 35.

Two mode indicating signs are arranged on the outer side of the star-shaped bulge of the additional cover body 40, namely a filtering mode sign 45 and a direct drinking mode sign 46; the position of the mode indicating point 35, the position of the mode indicating mark, and the anchor point 33 are in a corresponding relationship with each other.

The correspondence relationship between the three will be specifically described below in conjunction with the operation.

The additional cover 40 is rotatable with respect to the main cover 30, centering around the mounting post 41. In the rotating process, when the filter screen 43 moves to the drink outlet 34, the multifunctional cup cover is in the filtering mode, and the drink can flow out after being filtered by the filter screen 43. At this point, the rail wheel 42 snaps into one of the anchor points 33 and the filter mode flag 45 correspondingly rotates to a position adjacent to the mode indicator point 35.

When the gap area of the additional cover body 40 rotates to the drink outlet 34, the multifunctional cup cover is in a direct drinking mode, and the drink can directly flow out through the drink outlet 34. At this point, the rail wheel 42 snaps into one of the other anchor points 33 and the drink-through mode flag 46 correspondingly rotates to a position adjacent to the mode indicator point 35.

When the non-opening area of the additional cover body 40 is rotated to the drink outlet 34, the multifunctional cup cover is in a closed mode, the drink outlet 34 is covered by the bottom of the additional cover body, and the drink cannot flow out. At this point, the rail wheel 42 snaps into one of the third anchor points 33, and the star-shaped protrusion near the position of the mode indicating point 35 has no indication.

The operator can determine which mode the multifunctional cover is in at this time by observing which mode indicating mark the mode indicating point approaches.

The main lid 30 further includes an air vent 36 so that air can enter the beverage when drinking, and the beverage can more easily flow out under the action of air pressure. The additional cover 40 further includes a vent plug 44, the vent plug 44 being positioned to: when the additional cover 40 is rotated to the closed mode, the vent plug 44 may block the vent 36 to prevent the beverage from flowing out of the vent 36.

Example 4

The other parts are the same as the embodiment 2, and a multifunctional cup cover shown in the embodiment 3 is arranged on the top of the cup body 2.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A safety switch is characterized by comprising a power supply key and a safety rod; the safety lever is set to have two states: a safe state and a protection state; the power key is set to have two states: an on state and an off state; the power key is connected or associated with the safety lever, the power key being settable to an on state only when the safety lever is in a safe position; when the safety lever is switched from the safety state to the protection state, the power supply key is automatically switched from the on state to the off state, so that the use safety is ensured.

2. The safety switch according to claim 1, wherein the power button comprises a button and a switch, the button comprising a contact lever and a first return device; the first return device is an elastic piece and is connected with the key; the contact rod is connected with the key or is an integral body; when the key is pressed down in the original state, the contact rod contacts the contact on the switch to trigger the power supply to be switched on; at the moment, the key is in a connection state, and the first return device is in a state of applying elastic force; when the key returns to the original position under the action of the elastic force of the first return device, the contact rod is separated from the contact on the switch, the power supply is cut off, and the key is in a disconnected state.

3. The safety switch according to claim 2, wherein the safety lever comprises a through-going notch, the contact lever being arranged to contact the switch only through the through-going notch; the contact rod comprises a limiting step; when the safety rod is in a protection state, the limiting step is clamped at the edge of the through notch, and the contact rod cannot penetrate through the through notch; when the safety rod is in a safe state, the limiting step is not blocked any more, and the contact rod can penetrate through the through notch.

4. A safety switch according to any one of claims 1 to 3, wherein the safety lever is arranged to be connected to a cup of a blender, the safety lever being in a safe state when the cup is properly installed and in a protective state when the cup is not present or is not properly installed.

5. A safety switch according to claim 3, wherein the safety lever comprises a second return means, which is a resilient member, connected to the safety lever and providing a resilient force such that the safety lever is switchable between the protection state and the safety state.

6. The safety switch according to claim 5, wherein one side of said limit step further comprises a reset ramp, said reset ramp being aligned with said through notch when said key is depressed; when the safety rod is converted from the safety state to the protection state under the action of the elastic force of the second return device, the through notch is in contact with the reset inclined plane and pushes the key to return to the original position under the action of the elastic force; at this time, the contact lever is released from contact with the switch, and the power supply is cut off.

7. The safety switch according to claim 5, wherein the first and second return means are springs.

8. A food blending machine comprising a body and a cup, wherein the body comprises a safety switch according to any of claims 1 to 7.

9. The food mixing apparatus of claim 8, including a body including a detent, and wherein the cup includes a detent projection, the detent projection cooperating with the detent, the cup being insertable into the body only when the detent projection is snapped into the detent.

10. The food blending machine of claim 8, wherein the cup body further comprises a multi-functional lid comprising a main lid comprising a beverage outlet and an additional lid comprising a strainer; the additional cover is arranged to be movable relative to the main cover; when the filter screen moves to the position coincident with the drink outlet, the multifunctional cup cover is in a filter screen mode, and at the moment, the drink flows out after being filtered by the filter screen.

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