Safety lock structure and mixer

Abstract

The invention discloses a safety lock structure and a blender with the safety lock structure, wherein the safety lock structure comprises: a main machine, in which a micro switch and a safety movable rod are built-in; a cup holder, connected to the upper end of the main machine; a blending cup, installed on the cup holder; and an oblique movable member, connected to the inside of the cup holder; wherein the oblique movable member is provided with a guiding inclined surface, an oblique guide groove matching the guiding inclined surface is provided inside the cup holder, and the main machine is provided with a vertical hole for installing the safety movable rod, when the oblique movable member is located at the upper part of the oblique guide groove, the upper end of the oblique movable member protrudes out of the cup holder, and the lower end of the oblique movable member deviates from the vertical hole; after the blending cup is installed, the oblique movable member is pressed down, the oblique movable member is aligned with the vertical hole, and the oblique movable member presses down the safety movable rod to trigger the micro switch.

Description

Technical Field

[0001] The invention relates to the technical field of mixers, and in particular to a safety lock structure for a mixer and a mixer. Background Art

[0002] Blenders are commonly used kitchen appliances, bringing convenience to users. At present, separate blenders include a blending cup, a blending blade assembly, a cup holder and a main unit. When in use, the blending blade assembly is first installed in the cup holder, then the blending cup is connected to the cup holder, and finally the cup holder is installed on the main unit. The main unit has a built-in motor, which drives the blending blade assembly to rotate to achieve blending.

[0003] In order to prevent injuries caused by the stirring blade assembly being activated when the stirring cup is not installed, the blender is equipped with a safety lock. The current safety lock only has a movable part on the cup holder. After the stirring cup is installed, the movable part will be locked. After the cup holder is installed into the main unit, the movable part of the cup holder presses down the safety movable rod of the main unit, and the safety movable rod presses down the micro switch. Only then can the motor start to run. If the stirring cup is not installed in place, the micro switch is not connected and the motor cannot run. However, under this structure, the micro switch can still be triggered by pressing the cup holder manually, and the motor can cause the stirring blade assembly to rotate, which poses a safety hazard and needs to be improved. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a safety lock structure, when the mixing cup is not installed in place, the micro switch is not connected, so as to prevent the motor from starting and eliminate the potential safety hazard.

[0005] The present invention also provides a mixer with the safety lock structure.

[0006] The safety lock structure according to the first aspect of the present invention is used for a blender and includes:

[0007] The main unit has a built-in micro switch and a safety movable rod;

[0008] A cup holder connected to the upper end of the host;

[0009] A stirring cup, mounted on the cup holder;

[0010] An oblique movable member connected to the interior of the cup holder;

[0011] The oblique movable member is provided with a guiding inclined surface, an oblique guide groove cooperating with the guiding inclined surface is provided inside the cup holder, and the main machine is provided with a vertical hole for installing the safety movable rod. When the oblique movable member is located at the upper part of the oblique guide groove, the upper end of the oblique movable member protrudes out of the cup holder, and the lower end of the oblique movable member deviates from the vertical hole. After the mixing cup is installed, the oblique movable member is pressed down, the oblique movable member is aligned with the vertical hole, and the oblique movable member presses down the safety movable rod to trigger the micro switch.

[0012] The safety lock structure according to the first embodiment of the present invention has at least the following beneficial effects: when the blending cup is not installed in place, the cup holder is installed on the main unit, and the lower end of the oblique movable member deviates from the vertical hole. Even if a person presses the cup holder by hand, the oblique movable member cannot press down the safety movable rod in the vertical hole, and thus cannot trigger the micro switch, and the main unit cannot start, thereby eliminating potential safety hazards and improving safety. When the blending cup is installed in place, the oblique movable member is pushed to move along the oblique guide groove, and the oblique movable member is aligned with the vertical hole. The oblique movable member can press down the safety movable rod to trigger the micro switch, and the main unit can start normally.

[0013] According to some embodiments of the first aspect of the present invention, there are at least two oblique movable members, which are evenly distributed circumferentially in the cup holder.

[0014] According to some embodiments of the first aspect of the present invention, a push rod is provided at the lower end of the inclined movable member, the push rod matches the shape of the vertical hole, and a baffle is provided on the bottom surface of the inclined guide groove, and the baffle is provided with a through hole for the push rod to pass through.

[0015] According to some embodiments of the first aspect of the present invention, the safety movable rod is provided with a block having an area larger than the vertical hole, a sliding rod is provided at the lower end of the block, a spring is mounted on the sliding rod, and the spring is connected to the main machine.

[0016] According to some embodiments of the first aspect of the present invention, a safety switch seat is further mounted on the slide rod, two ends of the spring are respectively abutted against the block and the safety switch seat, and the micro switch is fixedly connected to the safety switch seat.

[0017] According to some embodiments of the first aspect of the present invention, a stirring blade assembly is connected to the middle of the cup holder, the stirring blade assembly is provided with a pressure plate contacting the inclined movable member, and the stirring cup is threadedly connected to the cup holder and presses the pressure plate.

[0018] According to some embodiments of the first aspect of the present invention, the angle between the guiding inclined surface and the vertical surface is 12 degrees to 20 degrees.

[0019] According to some embodiments of the first aspect of the present invention, the displacement distance of the oblique movable member in the vertical direction is 3 mm to 5 mm, and the displacement distance in the horizontal direction is 1 mm to 1.5 mm.

[0020] The mixer according to the second embodiment of the present invention has the safety lock structure as described above.

[0021] According to some embodiments of the second aspect of the present invention, a motor is disposed in the host, and the motor is electrically connected to the micro switch.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 are cross-sectional views of some embodiments of the second aspect of the present invention;

[0025] Figure 2 for Figure 1 Exploded diagram of the components in the middle;

[0026] Figure 3 and Figure 4 Partial cross-sectional views of two states of some embodiments of the first aspect of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] With the existing safety lock, when the blender cup is not installed, a person can still trigger the micro switch by pressing the cup base manually, and the motor can cause the blender blade assembly to rotate, posing a safety hazard.

[0031] For this purpose, refer to Figure 3 to Figure 4 The safety lock structure according to the first embodiment of the present invention is used for a blender, comprising: a main unit 100, with a micro switch 110 and a safety movable rod 120 built therein; a cup holder 200, connected to the upper end of the main unit 100; a blending cup 300, mounted on the cup holder 200; an inclined movable member 310, connected to the inside of the cup holder 200; wherein the inclined movable member 310 is provided with a guide inclined surface 311, and the inside of the cup holder 200 is provided with an inclined guide groove matched with the guide inclined surface 311 210, the host 100 is provided with a vertical hole 130 for installing the safety movable rod 120. When the oblique movable member 310 is located at the upper part of the oblique guide groove 210, the upper end of the oblique movable member 310 protrudes out of the cup holder 200, and the lower end of the oblique movable member 310 deviates from the vertical hole 130; after the blending cup 300 is installed, the oblique movable member 310 is pressed down, the oblique movable member 310 is aligned with the vertical hole 130, and the oblique movable member 310 presses down the safety movable rod 120 to trigger the micro switch 110.

[0032] Using the structure, refer to Figure 4 In normal use, the blending cup 300 is mounted on the cup holder 200, the blending cup 300 pushes the oblique movable member 310 to move along the oblique guide groove 210, the oblique movable member 310 is aligned with the vertical hole 130, the oblique movable member 310 is inserted into the vertical hole 130, and the safety movable rod 120 is pressed down to trigger the micro switch 110, and the host 100 can be started normally for blending. Figure 3 When the blending cup 300 is not installed in place, the oblique movable member 310 is located at the upper part of the oblique guide groove 210, and the lower end of the oblique movable member 310 deviates from the vertical hole 130. The cup holder 200 is installed on the host 100. Even if a person presses the cup holder 200 by hand, the oblique movable member 310 cannot be inserted into the vertical hole 130, and the safety movable rod 120 in the vertical hole 130 cannot be pressed down, and the micro switch 110 cannot be triggered. The host 100 cannot be started, thereby eliminating safety hazards and improving safety.

[0033] Reference Figure 2 According to some embodiments of the first aspect of the present invention, there are four oblique movable members 310 and they are evenly distributed in the circumferential direction in the cup holder 200. Since only one safety movable rod 120 is provided in the host 100, the above structure is adopted to facilitate the user to install the cup holder 200 on the host 100, and multiple angles can ensure that there is an oblique movable member 310 aligned with the safety movable rod 120, ensuring that the blender can be used normally and conveniently.

[0034] Reference Figure 3According to some embodiments of the first aspect of the present invention, a push rod 312 is provided at the lower end of the oblique movable member 310, and the push rod 312 matches the shape of the vertical hole 130. A baffle is provided on the bottom surface of the oblique guide groove 210, and the baffle is provided with a through hole for the push rod 312 to pass through. The baffle is used to support the oblique movable member 310 to prevent the oblique movable member 310 from falling out of the oblique guide groove 210, and the through hole can limit the position of the push rod 312, which is more accurate.

[0035] Reference Figure 3 According to some embodiments of the first aspect of the present invention, the safety movable rod 120 is provided with a stopper 121 having an area larger than the vertical hole 130, and a slide rod 122 is provided at the lower end of the stopper 121. A spring 140 is sleeved on the slide rod 122, and the spring 140 is connected to the host 100. The stopper 121 is used to limit the highest position of the safety movable rod 120, and the elasticity of the spring 140 is used to push the safety movable rod 120 to remain in the highest position. When the oblique movable member 310 presses down the safety movable rod 120, the spring 140 contracts to store energy, and after the oblique movable member 310 is disengaged, the spring 140 pushes the safety movable rod 120 to automatically reset, thereby ensuring the performance.

[0036] Reference Figure 3 According to some embodiments of the first aspect of the present invention, a safety switch seat 150 is further mounted on the slide rod 122, two ends of the spring 140 are respectively abutted against the block 121 and the safety switch seat 150, and the micro switch 110 is fixedly connected to the safety switch seat 150. The safety switch seat 150 limits the spring 140 on one hand, and installs the micro switch 110 on the other hand. The safety movable rod 120, the micro switch 110, the spring 140 and the safety switch seat 150 are assembled as one body, which improves the assembly efficiency of the mixer and helps to reduce costs.

[0037] Reference Figure 3 According to some embodiments of the first aspect of the present invention, a stirring blade assembly 400 is connected to the middle of the cup holder 200, and the stirring blade assembly 400 is provided with a pressing plate 410 that contacts the oblique movable part 310, and the stirring cup 300 is threadedly connected to the cup holder 200 and presses the pressing plate 410. With the above structure, when installing the stirring blade assembly 400, only correct installation can ensure that the pressing plate 410 presses the oblique movable part 310, thereby improving safety; at the same time, the stirring cup 300 is used to press the stirring blade assembly 400, thereby improving the operating stability of the stirring blade assembly 400.

[0038] Reference Figure 3According to some embodiments of the first aspect of the present invention, the angle between the guiding inclined surface 311 and the vertical surface is 12 to 20 degrees, with 15 degrees being a preferred solution. Furthermore, the displacement distance of the oblique movable member 310 in the vertical direction is 3 to 5 mm, and the displacement distance in the horizontal direction is 1 to 1.5 mm. Among them, the displacement distance of the oblique movable member 310 in the vertical direction is preferably 4 mm, and the displacement distance in the horizontal direction is preferably 1.2 mm, which can ensure that the oblique movable member 310 deviates from the vertical hole 130 by a sufficient distance without affecting the smooth sliding of the oblique movable member 310 along the oblique guide groove 210.

[0039] Reference Figure 1 The blender according to the second aspect of the present invention has the above safety lock structure. When the blending cup 300 is not installed in place, the oblique movable member 310 is located at the upper part of the oblique guide groove 210, and the lower end of the oblique movable member 310 deviates from the vertical hole 130. The cup holder 200 is installed on the host 100. Even if a person presses the cup holder 200 by hand, the oblique movable member 310 cannot be inserted into the vertical hole 130, and the safety movable rod 120 in the vertical hole 130 cannot be pressed down, and the micro switch 110 cannot be triggered. The host 100 cannot be started, thereby eliminating safety hazards and improving safety.

[0040] Reference Figure 1 According to some embodiments of the second aspect of the present invention, a motor 160 is provided in the main unit 100, and the motor 160 is used to rotate the stirring blade assembly 400. The micro switch 110 controls the circuit connectivity of the motor 160, so the micro switch 110 must be turned on first to start the motor 160.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. Safety lock structure, used for mixer, characterized in that: include: The main unit has a built-in micro switch and a safety movable rod; A cup holder connected to the upper end of the host; A stirring cup, mounted on the cup holder; An oblique movable member connected to the inside of the cup holder, wherein there are at least two oblique movable members uniformly distributed in the circumferential direction in the cup holder; The oblique movable member is provided with a guide inclined surface, an oblique guide groove cooperating with the guide inclined surface is provided inside the cup holder, the angle between the guide inclined surface and the vertical surface is 12 to 20 degrees, the main unit is provided with a vertical hole for installing the safety movable rod, when the oblique movable member is located at the upper part of the oblique guide groove, the upper end of the oblique movable member protrudes out of the cup holder, and the lower end of the oblique movable member deviates from the vertical hole; After the mixing cup is installed, the oblique movable member is pressed down, the oblique movable member is aligned with the vertical hole, and the oblique movable member presses down the safety movable rod to trigger the micro switch; A push rod is arranged at the lower end of the oblique movable member, and the push rod matches the shape of the vertical hole. A baffle is arranged on the bottom surface of the oblique guide groove, and the baffle is provided with a through hole for the push rod to pass through.

2. The safety lock structure according to claim 1, characterized in that: The safety movable rod is provided with a block whose area is larger than the vertical hole, and a sliding rod is provided at the lower end of the block, and a spring is sleeved on the sliding rod, and the spring is connected to the main machine.

3. The safety lock structure according to claim 2, characterized in that: The slide rod is also provided with a safety switch seat, the two ends of the spring are respectively in contact with the stopper and the safety switch seat, and the micro switch is fixedly connected to the safety switch seat.

4. The safety lock structure according to claim 1, characterized in that: A stirring blade assembly is connected to the middle of the cup seat, and the stirring blade assembly is provided with a pressing plate contacting the inclined movable member. The stirring cup is threadedly connected to the cup seat and presses the pressing plate.

5. The safety lock structure according to claim 1, characterized in that: The displacement distance of the oblique movable member in the vertical direction is 3 mm to 5 mm, and the displacement distance in the horizontal direction is 1 mm to 1.5 mm.

6. A mixer, characterized in that A safety lock structure as claimed in any one of claims 1 to 5.

7. The mixer according to claim 6, characterized in that A motor is arranged in the host, and the motor is electrically connected to the micro switch.

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