A stirrer that is safe to use

Abstract

The present invention discloses a safe stirrer, comprising a main unit, a cup cover and a stirring cup; the main unit comprises a motor and a first coupling connected to the transmission shaft of the motor; the cup cover comprises a cup cover body, a cover shell fixed on the cup cover body, a knife shaft arranged through the cup cover body, a second coupling fixed on the upper end of the knife shaft and a stirring knife fixed on the lower end of the knife shaft; a safety mechanism is arranged in the cup cover, the safety mechanism comprises a retaining ring, a first elastic member and at least one linkage assembly; the retaining ring is sleeved on the upper end of the knife shaft, a retaining rod is arranged on the lower end of the retaining ring, and the first elastic member is arranged between the retaining ring and the cup cover body; the linkage assembly is movably arranged on the cup cover body and is linked with the stirring cup, and when the cup cover and the stirring cup are not installed in place, the linkage assembly prevents the installation between the main unit and the cup cover, and when the main unit and the cup cover are installed in place, the retaining rod is limitedly connected with the linkage assembly to lock the cup cover with the stirring cup. The present invention has a reliable structure and is safe to use.

Description

Technical Field

[0001] The invention relates to household food processing equipment, in particular to a stirrer that is safe to use. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] The blender can mix, blend and crush food, and can meet the diverse food processing needs of consumers, especially the complementary food mixing needs of infants and the elderly, and is therefore widely loved by users.

[0004] Existing blenders generally include a main unit, a cup cover, and a blending cup. The cup cover is usually detachably mounted on the main unit. The cup cover is provided with a knife group for crushing food, and the main unit is provided with a motor for driving the knife group. The knife group on the cup cover is driven by the motor of the main unit to rotate at high speed to crush the food. This type of blender requires that the food be placed in the blending cup and then covered with the cup cover, and then the main unit is assembled and started to crush the food. However, during use, if the user can directly install the cup cover on the main unit without installing it on the blending cup, the knife group will be exposed. When the main unit is started, the knife group will be driven to rotate, and the rotating knife group will be exposed, posing a potential safety hazard of accidentally injuring the user.

[0005] For this reason, a safety mechanism is added to the mixer to eliminate the above-mentioned safety hazards. For example, the Chinese patent application CN2019113044087 previously applied by the applicant discloses a safety mixer, in which the safety mechanism includes a safety bolt, which rotates and switches between a limit position and a non-limit position, so that the limit arm limits or disengages the blocking part, and the safety bolt is rotated by the snap block to generate a force on the push arm, and the reset is based on the elastic part of the safety bolt itself. After being used for a period of time, the safety bolt structure is prone to deformation, resulting in obstructed rotation, and even failure, and the overall structure has poor durability. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention proposes a stirrer that is safe to use.

[0007] The present invention provides a blender that is safe to use, comprising a main unit, a cup cover and a blending cup; the main unit comprises a motor and a first coupling that is drivingly connected to a transmission shaft of the motor; the cup cover comprises a cup cover body, a cover shell fixed on the cup cover body, a knife shaft arranged through the cup cover body, a second coupling fixed at the upper end of the knife shaft and a blending knife fixed at the lower end of the knife shaft; a safety mechanism is arranged in the cup cover, the safety mechanism comprises a baffle ring, a first elastic member and at least one linkage assembly; the baffle ring is sleeved at the upper end of the knife shaft, a baffle rod is arranged at the lower end of the baffle ring, and the first elastic member is arranged between the baffle ring and the cup cover body; the linkage assembly is movably arranged on the cup cover body and is linked to the blending cup, when the cup cover and the blending cup are not installed in place, the linkage assembly prevents the installation between the main unit and the cup cover, when the main unit and the cup cover are installed in place, the baffle rod is limit-connected to the linkage assembly to lock the cup cover and the blending cup.

[0008] In a preferred embodiment, the linkage assembly includes a trigger rod and a second elastic member, one end of the trigger rod is provided with an insertion hole and the other end is provided with a trigger end exposed from the cup cover; the second elastic member is arranged between the cup cover and the trigger rod so that the trigger end is linked with the stirring cup, and only after the cup cover and the stirring cup are installed in place is the insertion hole aligned with the baffle rod so that the main unit can be installed in place with the cup cover, and when the main unit and the cup cover are installed in place, the baffle rod is inserted into the insertion hole so that the cup cover and the stirring cup are locked.

[0009] In a preferred embodiment, a through slot is provided between the two ends of the trigger rod, and a guide column is protrudingly provided on the cup cover body, and the guide column is arranged through the through slot of the trigger rod.

[0010] In a preferred embodiment, one end of the second elastic member abuts against the guide column, and the other end abuts against the trigger end.

[0011] In a preferred embodiment, the first elastic member abuts against the retaining ring and applies an upward elastic force to the retaining ring, and when the main unit is not installed on the cup cover, the horizontal height of the top end of the retaining ring is higher than the horizontal height of the lower end of the second coupling.

[0012] In a preferred embodiment, there are multiple linkage components, and the multiple linkage components are evenly spaced and distributed around the knife axis.

[0013] In a preferred embodiment, the cover shell includes an outer shell, a mounting cavity located at the upper end of the outer shell, and a guide cylinder located below the mounting cavity, and the retaining ring is arranged in the guide cylinder.

[0014] In a preferred embodiment, a limit buckle is provided at the lower end of the retaining ring.

[0015] In a preferred embodiment, the inner wall of the blending cup is provided with an introduction groove with a notch on the top, a buckle groove without a notch on the top, and a buckle portion provided between the introduction groove and the buckle groove, and the wall thickness of the buckle groove is greater than the wall thickness of the introduction groove.

[0016] In a preferred embodiment, the outer side surface of the trigger end is configured as an arc shape, and both side surfaces of the buckle portion facing the introduction groove and the buckle groove are configured as arc surfaces.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention cleverly sets a safety mechanism in the cup cover. When the cup cover and the stirring cup are not installed in place, the linkage assembly prevents the installation between the main unit and the cup cover. It can prevent the main unit from being installed on the cup cover before the cup cover is installed on the stirring cup when the stirrer is assembled, and it can also prevent the cup cover from being removed from the stirring cup before the main unit is removed when the stirrer is disassembled. When the cup cover is not installed in place with the stirring cup, the first coupling and the second coupling cannot be meshed and connected, so that the cup cover and the main unit cannot form a transmission connection structure, thereby avoiding the potential safety hazards caused by the exposed rotation of the stirring blade and improving the safety performance. In addition, compared with the prior art, the safety mechanism adopted by the present invention adopts two elastic members to cooperate with the retaining ring and the trigger rod respectively, which not only has a simple overall structure and low implementation cost, but also has a very high reliability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the agitator.

[0020] Figure 2 It is a schematic diagram of the exploded structure of the agitator.

[0021] Figure 3 It is a schematic diagram of the internal structure of the agitator.

[0022] Figure 4 It is a schematic diagram of the internal structure of the cup lid.

[0023] Figure 5 It is a schematic diagram of the structure of a blender cup.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the upper shell of the cup cover installed on the blending cup without the cup cover.

[0025] Figure 7 It is a schematic diagram of the internal structure of the cup cover installed on the mixing cup.

[0026] Figure 8 yes Figure 3 Schematic diagram of the cross-sectional structure of AA. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present application to achieve the predetermined purpose, the specific implementation methods, structures, features and effects of the present application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0028] like Figure 1-Figure 8 As shown, the blender includes a main unit 1, a cup cover 2 and a blending cup 3; the main unit 1 includes a motor 11 and a first coupling 12 connected to the transmission shaft of the motor 11; the cup cover 2 includes a cup cover body 20, a cover shell 21 fixed on the cup cover body 1, a knife shaft 28 arranged through the cup cover body 20, a second coupling 27 fixed to the upper end of the knife shaft 28 and a blending knife 29 fixed to the lower end of the knife shaft 28; a safety mechanism is provided in the cup cover 2, which prevents the first coupling 12 and the second coupling 27 from meshing and connecting when the cup cover 2 is not installed in place with the blending cup 3, thereby preventing the cup cover 2 from forming a transmission connection structure with the main unit 1, avoiding the potential safety hazard caused by the rotation of the blending knife 29, and improving the safety performance of use.

[0029] Among them, the safety mechanism includes a baffle ring 22, a first elastic member 23 and at least one linkage component; the baffle ring 22 is sleeved on the upper end of the knife shaft 28, and a baffle rod 221 is provided at the lower end of the baffle ring 22. The first elastic member 23 is arranged between the baffle ring 22 and the cup cover body 20 so that the baffle ring 22 can move up and down along the central axis of the knife shaft 28; the linkage component is movably arranged on the cup cover body 20 and is linked with the stirring cup 3. Only after the cup cover 2 and the stirring cup 3 are installed in place can the main unit 1 and the cup cover 2 be installed in place, and when the main unit 1 and the cup cover 2 are installed in place, the baffle rod 221 is limitedly connected to the linkage component to lock the cup cover 2 and the stirring cup 3.

[0030] Specifically, the linkage assembly includes a trigger rod 24 and a second elastic member 25, one end of the trigger rod 24 is provided with an insertion hole 241 and the other end is provided with a trigger end 242 exposed from the cup cover 2; the second elastic member 25 is arranged between the cup cover 2 and the trigger rod 24 so that the trigger end 242 is linked with the stirring cup 3, and only after the cup cover 2 and the stirring cup 3 are installed in place, the insertion hole 241 is aligned with the blocking rod 221 so that the main unit 1 can be installed in place with the cup cover 2, and when the main unit 1 and the cup cover 2 are installed in place, the blocking rod 221 is inserted into the insertion hole 241 to lock the cup cover 2 with the stirring cup 3.

[0031] When the cup cover 2 and the mixing cup 3 are not installed in place, that is, the cup cover 2 is Figure 4When the main unit 1 and the cup cover 2 are separately provided, or when the cup cover 2 is installed on the blending cup 3 but not installed in place, the second elastic member 25 generates an outward thrust on the trigger rod 24 toward the trigger end 242, so that the insertion hole 241 and the blocking rod 221 are misaligned so that the blocking rod 221 cannot be inserted into the insertion hole 241, so that the main unit 1 and the cup cover 2 cannot be installed in place, and the first coupling 12 and the second coupling 27 cannot be meshed and connected. In addition, when the main unit 1 and the cup cover 2 are installed in place, the blocking rod 221 is inserted into the insertion hole 241, so that the trigger rod 24 is fixed and cannot move, which plays the role of locking the cup cover 2 and the blending cup 3, so that the cup cover 2 cannot be removed from the blending cup 3, and the cup cover 2 is prevented from being removed from the blending cup 3 when the main unit 1 is not removed, thereby preventing the blending blade 29 from being exposed and rotating to bring about safety hazards, thereby achieving the purpose of improving the safety of use.

[0032] There are multiple linkage components (generally 2 or 3 are preferred), and the multiple linkage components are evenly spaced and distributed around the knife shaft 28. Evenly spaced multiple linkage components are arranged to improve the reliability of the safety mechanism.

[0033] A through slot is provided between the two ends of the trigger rod 24, and a guide column 201 is protruding on the cup cover body 20. The guide column 201 passes through the through slot of the trigger rod 24. The through slot and the guide column 201 cooperate to provide guidance for the movement of the trigger rod 24 relative to the cup cover body 20, thereby improving the reliability of the linkage assembly. At the same time, the through slot and the guide column 201 also provide space for assembling the second elastic member 25. Specifically, the second elastic member 25 is a spring, and the second elastic member 25 is arranged in the through groove. One end of the second elastic member 25 abuts on the guide column 201, and the other end abuts on the trigger end 242. The second elastic member 25 provides a rebound force to the trigger rod 24 to reset the trigger rod 24: when the cup cover 2 and the stirring cup 3 are not installed in place, the trigger rod 24 is in the original position, and the trigger rod 24 is pushed outward by the elastic force of the second elastic member 25 toward the cup cover 2, so that the through hole 241 and the baffle 221 of the baffle ring 22 are misaligned, and the trigger rod 24 will block the baffle ring 22 so that it cannot be pressed down, thereby making it impossible for the main unit 1 and the cup cover 2 to be installed in place.

[0034] The cover shell 21 includes an outer shell 211, an installation cavity 210 located at the upper end of the outer shell 211, and a guide cylinder 212 located below the installation cavity 210. The retaining ring 22 is arranged in the guide cylinder 212. The guide cylinder 212 provides guidance for the upward and downward movement of the retaining ring 22 to avoid jamming of the retaining ring 22 when moving up and down, thereby further improving the reliability of the safety mechanism.

[0035] The first elastic member 23 is a spring, and the first elastic member 23 provides an upward rebound force to the retaining ring 22 to reset the retaining ring 22. The first elastic member 23 abuts against the retaining ring 22 and applies an upward elastic force to the retaining ring 22. When the main unit 1 is not installed on the cup cover 2, the horizontal height of the top end of the retaining ring 22 is higher than the horizontal height of the lower end of the second coupling 27, so that the main unit 1 cannot be installed on the cup cover 2 at this time.

[0036] A limit buckle 222 is provided at the lower end of the retaining ring 22, so that when the retaining ring 22 moves upward to the reset position under the action of the first elastic member 23, the lower end of the guide cylinder 212 is hooked by the limit buckle 222 to ensure that the first elastic member 23 can always abut between the retaining ring 22 and the cup cover body 20, thereby improving the reliability of the safety mechanism.

[0037] The inner side of the outer shell 211 is provided with an assembly groove 213, and the lower end of the main unit 1 is provided with a buckle portion 13. When the main unit 1 and the cup cover 2 are installed in place, the buckle portion 13 is buckled into the assembly groove 213, and the first coupling 12 and the second coupling 23 are engaged, so that the motor 11 can drive the stirring blade 22 to rotate in the stirring cup 3 to process food.

[0038] The inner wall of the mixing cup 3 is provided with an introduction groove 31 with a notch on the top, a buckle groove 32 without a notch on the top, and a buckle portion 33 provided between the introduction groove 31 and the buckle groove 32, and the wall thickness of the buckle groove 32 is greater than the wall thickness of the introduction groove 31. When installing the cup cover 2 to the mixing cup 3, first align the trigger end 242 of the trigger rod 24 with the upper notch of the introduction groove 31 and press it into the introduction groove 31, and rotate the cup cover 2 appropriately, so that the trigger end 242 abuts against the buckle portion 33 so that the second elastic member 25 is further compressed, so that the trigger end 242 can pass over the buckle portion 33 and enter the buckle groove 32, and the second elastic member 25 generates a restoring elastic force so that the trigger end 242 is limited in the buckle groove 32, and the cup cover 2 and the mixing cup 3 are installed in place.

[0039] Among them, the outer side surface of the trigger end 242 is set to be an arc shape, and the two side surfaces of the buckle portion 33 facing the introduction groove 31 and the buckle groove 32 are also set to be arc surfaces, so that the trigger end 242 can smoothly pass over the buckle portion 33 when installing or removing the cup cover 2, so as to facilitate user operation.

[0040] The present invention cleverly sets a safety mechanism in the cup cover. When the cup cover and the stirring cup are not installed in place, the linkage assembly prevents the installation between the main unit and the cup cover. It can prevent the main unit from being installed on the cup cover before the cup cover is installed on the stirring cup when the stirrer is assembled, and it can also prevent the cup cover from being removed from the stirring cup before the main unit is removed when the stirrer is disassembled. When the cup cover is not installed in place with the stirring cup, the first coupling and the second coupling cannot be meshed and connected, and a transmission connection structure cannot be formed between the cup cover and the main unit, thereby avoiding the potential safety hazards caused by the rotation of the stirring blade, and improving the safety performance of use. In particular, the working principle of the stirrer disclosed in the present invention, assembly or disassembly, is as follows:

[0041] When the main unit 1 and the cup cover 2 are assembled separately (i.e., the cup cover 2 is not installed on the stirring cup 3), the trigger rod 24 is in the original position relatively outward under the action of the second elastic member 25, and the insertion hole 241 and the baffle rod 221 at the lower end of the baffle ring 22 are misaligned, so that the baffle ring 22 cannot be pressed down, and the depth from the cavity mouth of the installation cavity 210 to the baffle ring 22 is shallow. The lower end of the main unit 1 cannot be installed in the installation cavity 210 of the cup cover 2 because the baffle ring 22 cannot be pressed down, that is, the main unit 1 and the cup cover 2 cannot be installed in place. At this time, the first coupling 12 of the main unit 1 and the second coupling 23 of the cup cover 2 are separated, so that the motor 11 cannot drive the knife shaft 28, thereby avoiding the danger of the exposed stirring knife 29 rotating.

[0042] When the trigger rod 24 on the cup cover 2 is assembled against the introduction groove 31 on the cup 3 and rotated at a certain angle, the trigger rod 24 is screwed into the buckle groove 32 to allow the cup cover 2 and the mixing cup 3 to be installed in place. Since the wall thickness of the buckle groove 32 is greater than the wall thickness of the introduction groove 31, the trigger rod 24 moves a certain distance toward the center of the cup cover 2, so that the insertion hole 201 and the stopper 221 of the stopper ring 22 are arranged opposite to each other. At this time, the stopper ring 22 can be pressed downward so that the stopper 221 can be inserted into the insertion hole 241. Then, the host 1 is assembled to the cup cover 3, and the lower end of the host 1 contacts the stopper ring 22 so that the stopper ring 22 moves downward until the stopper 221 is inserted into the insertion hole 241. The buckle part 13 is buckled into the assembly groove 213 to realize the assembly of the host 1 and the cup cover 2. At this time, the first coupling 12 and the second coupling 23 are engaged, and the motor 11 can drive the mixing blade 22 to rotate in the mixing cup 3 to process food.

[0043] When the blender is in use, that is, the main unit 1, the cup cover 2 and the cup 3 are assembled together, the blocking rod 221 of the blocking ring 22 is inserted into the insertion hole 241 of the trigger rod 24, so that the trigger rod 24 cannot elastically extend or retract when the main unit 1 is not pulled out. When trying to remove the cup cover 2 from the blending cup 3, the trigger rod 24 will block the buckle part 33 on the blending cup 3, and the blending cup 3 cannot be screwed out of the cup cover 2 at this time, that is, it is prevented from removing the cup cover 2 from the blending cup 3 when the main unit 1 is not removed, thereby avoiding the mixing blade 29 from being exposed and rotating to bring safety hazards, thereby achieving the purpose of improving the safety of use. Only when the main unit 1 is removed from the cup cover 2, the first elastic member 23 pushes the retaining ring 22 to bounce up to its original position, allowing the trigger rod 24 to disengage from the insertion hole 241, releasing the limiting relationship between the retaining ring 221 and the insertion hole 241, so that there is no interference between the retaining ring 22 and the trigger rod 24, thereby releasing the lock between the cup cover 2 and the stirring cup 3. At this time, the stirring cup 3 is rotated, and the trigger rod 24 returns to an elastically retractable state, and the trigger rod 24 enters the introduction groove 31 from the buckle groove 32, thereby separating the cup cover 2 and the cup 3.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A safe blender, comprising a main unit, a cup cover and a blending cup; the main unit comprises a motor and a first coupling connected to a transmission shaft of the motor; the cup cover comprises a cup cover body, a cover shell fixed on the cup cover body, a knife shaft passing through the cup cover body, a second coupling fixed to the upper end of the knife shaft and a blending knife fixed to the lower end of the knife shaft; the characteristics are: A safety mechanism is provided in the cup cover, the safety mechanism comprising a retaining ring, a first elastic member and at least one linkage assembly; the retaining ring is sleeved on the upper end of the knife shaft, a retaining rod is provided at the lower end of the retaining ring, and the first elastic member is provided between the retaining ring and the cup cover body; the linkage assembly is movably provided on the cup cover body and is provided in linkage with the stirring cup, when the cup cover and the stirring cup are not installed in place, the linkage assembly prevents the installation between the main machine and the cup cover, and when the main machine and the cup cover are installed in place, the retaining rod is limitedly connected with the linkage assembly to lock the cup cover and the stirring cup; The linkage assembly includes a trigger rod and a second elastic member, one end of the trigger rod is provided with an insertion hole and the other end is provided with a trigger end portion exposed from the cup cover; the second elastic member is arranged between the cup cover and the trigger rod so that the trigger end portion is arranged in linkage with the stirring cup, and the insertion hole is aligned with the blocking rod only after the cup cover and the stirring cup are installed in place so that the main unit and the cup cover can be installed in place, and when the main unit and the cup cover are installed in place, the blocking rod is inserted into the insertion hole so that the cup cover and the stirring cup are locked; The first elastic member abuts against the inside of the retaining ring and applies an upward elastic force to the retaining ring, and when the main unit is not installed on the cup cover, the horizontal height of the top end of the retaining ring is higher than the horizontal height of the lower end of the second coupling; There are multiple linkage components, and the multiple linkage components are evenly spaced and distributed around the knife axis.

2. The safe stirrer according to claim 1, characterized in that: A through slot is arranged between the two ends of the trigger rod, and a guide column is convexly arranged on the cup cover body, and the guide column passes through the through slot of the trigger rod.

3. The stirrer according to claim 2, characterized in that: One end of the second elastic member abuts against the guide column, and the other end abuts against the trigger end.

4. The safe stirrer according to claim 1, characterized in that: The cover shell comprises an outer shell, a mounting cavity located at the upper end of the outer shell and a guide cylinder located below the mounting cavity, wherein the retaining ring is arranged in the guide cylinder.

5. The safe stirrer according to claim 4, characterized in that: A limit buckle is arranged at the lower end of the retaining ring.

6. The stirrer according to any one of claims 1 to 5, characterized in that: The inner side wall of the mixing cup is provided with an introduction groove with a notch on the top, a buckle groove without a notch on the top, and a buckle portion arranged between the introduction groove and the buckle groove, and the wall thickness of the buckle groove is greater than the wall thickness of the introduction groove.

7. The stirrer according to claim 6, characterized in that: The outer side surface of the trigger end is set to be an arc shape, and the two side surfaces of the buckle part facing the introduction groove and the buckle groove are both set to be arc surfaces.

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