KR100228202B1 - Mixer/grinder having both functions served as safety switch and securing structure - Google Patents

Abstract

The present invention is a main body 3 having a drive motor 11 and the operation unit 12, a mixing cup (5) mounted on the upper end of the main body 3, the food cutting cutter 10 is provided at the lower end, It consists of a cup base (7) connecting the mixing cup (5) and the main body (3), the mixing cup (5) by a locking projection (17) corresponding to the locking projection (15) and the locking projection (15) In the mixer / crusher (1) adapted to fix the main body (3) and the main body (3), a mounting hole having a shape corresponding to the locking step (17) on the wall surface of the guide surface (13) below each of the locking projections (15). The safety switch 20 is formed through and exposed to the outside through the mounting hole 19 to be turned on and off by the locking step 17 to control the operation of the power switch of the operation unit 12. And a mixer / crusher having a fastening structure for a safety switch and a combination thereof, the connecting part of the mixing cup (5) and the main body (3). By controlling the on / off of the safety switch 20 through the non-occlusal fastening means, the shearing force applied to the rotary cutter 10 becomes excessive when the food is crushed by the mixer / crusher 1, causing unreasonable fluctuations in the main body and mixing. Even if the vertical movement of the cup 5 occurs, the safety switch 20 can be prevented from being turned off during operation, so that the use of the mixer / crusher 1 can be stably maintained without a short circuit.

Description

Mixer / Crusher with Safety Switch

The present invention relates to a mixer / crusher having a fastening structure of a safety switch as well, and more particularly, when a mixing cup is removed from a main body without using a mixer / crusher, a user or the like inadvertently switches an operation switch of the mixer / crusher. This safety switch unit has a fastening structure that connects the main body and the mixing cup in mounting a safety switch that prevents a safety accident that damages the user's body by rotating the rotating cutter exposed to the outside at high speed by turning it on. It is related to a mixer / crusher that can be installed in combination to provide more reliable safety performance and to expect a cost reduction effect due to a simple assembly form.

Generally, a device for grinding foods includes a juicer, a blender, and a pulverizer, where the juicer separates the food into solid components such as particles or dry matter and liquid components such as juice or liquid, and extracts juice or liquid only. The blender is to grind and mix one or more foods in the same container and to eat all the mixed foods without separating the liquid components, unlike the juicer. In addition, the grinder, which is not widely used in the general household, is used to grind foods containing little liquid to powder.

Such a juicer, blender or grinder has been manufactured and supplied with a variety of functions that can be used more conveniently in accordance with the recent trend of advanced food culture. For example, the juicer, blender and grinder as described above One product that is integrated into one is being released.

The functional integration of these products is taking many forms. For example, juicer mixers incorporating juicers and blenders or juicer mixers incorporating juicers and mixers and grinders are being developed.

Multifunctional products as mentioned above basically require a rotational force providing means that can provide rotational force, and a rotational cutter capable of finely carving food by obtaining the rotational force provided from such rotational force providing means and the like By selectively using similar rotating members, they are divided into juicers, mixers, or grinders, respectively.

Therefore, the juicer or the juice mixer grinder which can be used by integrating the functions of these various products is not only able to replace the rotating members in accordance with the respective use state, but also mounted on the main body to contain food. Mixing cups can be exchanged for the type of food that suits the condition of the food and the cooking conditions.

However, the various mixing machines as mentioned above are configured in such a way that the safety switch is exposed to the upper surface of the main body, so that the cup base of the mixing cup, which is placed on the main body to operate the safety switch, swings up and down slightly during operation. There was a problem that the safety switch is easily turned off to stop the operation. This problem will be described by taking the safety switch employed in the conventional mixer / crusher 101 shown in FIG. 1 as an example.

As shown in FIG. 1, the conventional mixer / crusher 101 has a main body 103, a mixing cup 105 mounted on an upper end of the main body 103, and the mixing cup 105 on the main body 103. It consists of a cup base (107) to be installed.

Here, the main body 103 is provided with a household electric motor 111 that can be easily used at home as the rotation force providing means mentioned above. The electric motor 111 is coupled to the rotary cutter 113 mounted at the bottom of the mixing cup 105 to generate a rotational force of the cutter 113. The outer case 115 of the main body 103 has various An operation unit 117 such as an operation switch or a light is attached.

The mixing cup 105 is a portion into which the food to be cooked is added and the mixing is directly performed. When the food is to be eaten after the mixing is finished or when the cleaning cup 105 is to be cleaned, the mixing cup 105 is used in a juicer for cooking purposes. It has a structure that is removed from the body 103 when you want to use a mixer or a juicer in the mixer. In particular, when the purpose of cooking is changed to have a structure that can be removed from the main body 103 in order to remove and replace the rotary cutter 113 and the mixing cup 105.

Looking at the operating state of the conventional mixer / crusher 101 configured as described above are as follows. First, the food to be mixed is put into the mixing cup 105, then the cup cover 109 is covered, and the operation cutter 117 turns on the operation switch, and the mixing cutter 113 starts to rotate accordingly. Food is gradually broken by the cutter 113. As the mixer / crusher 101 proceeds, the food becomes a liquid or juice at a predetermined level according to the rotational force of the cutter 113. After mixing is performed for a predetermined time, the operation is stopped to terminate the desired mixing operation. .

However, such a conventional mixer / crusher 101 has a safety switch composed of a push switch 121 mounted to be exposed to the upper surface of the main body 103, as shown in detail in FIGS. When the cup 105 is removed and the push switch 121 is turned off, the user does not cause the mixer / crusher 101 to operate even if the power switch 123 is inadvertently operated by the user. 113) prevented injuries from happening.

The conventional push switch 121 for the safety switch is a push rod 125 protruding above the lower surface so as to contact the lower surface of the cup base 107, which is arranged to extend perpendicular to the push rod 125 A connecting rod 127, a contact protrusion 129 protruding downward from the other end of the connecting rod 127, and an auxiliary tact switch for contacting the end surface of the contact protrusion 129 to control on / off of the power switch 123 ( 131 and the connecting rod 127 is mounted in the middle of the spring 135 to generate the elasticity of the push switch 121.

Here, the push rod 125 is to maintain the straightness by the guide portion 133 protruding from the inside of the upper surface of the main body 103, the spring 135 extending through the through-hole formed in the middle of the connecting rod 127 The boss 139 protrudes from the side of the guide part 133 so as to be connected to the seat part 137. A support boss 141 is formed on the side of the boss 139 to keep the connecting rod 127 horizontal, and a support boss 141 is provided on an outer circumferential surface of the connecting rod 127 at a position contacting the support boss 141. The contact protrusion 143 which contacts with) is formed.

Therefore, when mixing, when the mixing cup 105 is placed on the upper surface of the main body 103, the connecting rod 127 is a spring 135 when the lower surface of the cup base 107 presses the push rod 125 downwards. The contact protrusion 129 projecting downward at the end of the connecting rod 127 by pressing the auxiliary tact switch 131 to operate the mixer / crusher 101 in accordance with the on / off of the power switch 123 is achieved by moving downward of the connecting rod 127. This means that the mixer / crusher 101 is released from the safe mode.

On the contrary, when the user finishes the use of the mixer / crusher 101 and removes the mixing cup 105 from the main body 103, the connecting rod 127 is raised by the elasticity of the spring 135 to assist with the contact protrusion 129. As the contact between the tact switches 131 is released, the power switch 123 returns to the safe mode.

By the way, the conventional mixer / crusher 101 having a safety mode system mentioned above is difficult to assemble when fabricated as the configuration of the safety switch 121 is complicated and various parts used, as shown in FIG. There is a problem that not only increases the cost, but also increases the possibility of failure during use.

In particular, the safety switch 121 having a structure as in the prior art, when crushing the very hard food using the mixer / crusher 101, while the resistance to the rotary cutter 113 is increased while excessive vibration or swinging the body 103, etc. This occurs, the contact between the bottom surface of the cup base 107 and the push rod 125 is repeatedly dropped momentarily, although the safety switch 121 is released even though it is not a substantially safe mode, intermittently the mixer / crusher 101. There was also a problem that stops the operation of).

The present invention has been made in order to solve the problems with the conventional mixer / crusher as described above, the present invention is thus installed by installing a safety switch integrated in the fastening means for coupling the cup base and the main body of the mixer / crusher excessive torque during mixing The purpose of the present invention is to stably use the mixer / crusher without any interruption of instantaneous and continuous cracking regardless of the rigidity of the mixed food.

1 is a longitudinal sectional view of a conventional mixer / crusher.

FIG. 2 is a partial detailed cross-sectional view of the safety switch portion of the mixer / crusher of FIG.

3 is a longitudinal sectional view of the mixer / crusher according to the present invention;

4 is a partial detailed cross-sectional view of the safety switch portion of the mixer / crusher of FIG.

FIG. 5 is a partial perspective view of the safety switch of FIG. 4 as viewed from the bottom of the cup base; FIG.

* Description of the symbols for the main parts of the drawings *

1 mixer / crusher 3 body

5: mixing cup 7: cup base

13: guide surface 15: obstacle

17: jam jaw 19: mounting hole

20: safety switch 23: fixing piece

25: contact protrusion 27, 27 ': switching piece

29: switching bundle 33: jamming jaw

In order to achieve the above object, the present invention provides a main body having a drive motor and an operation unit, a mixing cup mounted at an upper end of the main body and provided with a cutter for cutting food, and a cup base connecting the mixing cup and the main body. The mixer / crusher is configured to fix the mixing cup and the main body by a plurality of locking projections projecting radially outwardly on the guide surface of the upper peripheral portion of the main body and a locking projection formed on the lower inner surface of the bottom of the cup base corresponding to the locking projection. In, the mounting hole of the shape corresponding to the locking step is formed through the lower guide surface wall surface of each locking projection, exposed to the outside through the mounting hole to be controlled on and off by the locking step to control the power switch operation of the operation unit Mixer with fastening structure for combined safety switch, characterized in that it comprises a safety switch It intended to provide an impression.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The mixer / grinding machine of the present invention, indicated by reference numeral 1 in FIG. 3, is largely mounted on the main body 3 at the bottom, the cup base 7 mounted on the upper end of the main body 3, and the cup base 7 like a general mixer. It consists of a mixing cup (5) to be fastened.

Here, the main body 3 includes a drive motor 11 for generating a rotational force of the rotary cutter 10 for crushing food and an operation unit 12 for controlling the operation of the whole. A motor of a capacity widely used in household appliances is employed, and the operation unit 13 is provided with a power switch for turning on / off the mixer / crusher 1.

The coupling 18 for connecting the rotary shaft 8 of the motor 11 and the rotary shaft 10 of the motor 11 is built in the cup base 7 mounted on the upper end of the main body 3, The mixing cup 5 is provided with a cup cover 14 fitted to the top, and the side of the mixing cup 5 is attached to the handle (not shown) for picking up the mixing cup (5).

At this time, the upper surface outer periphery of the main body 3 is formed with a guide surface 13 into which the lower end of the cup base 7 is fitted in the vertical direction, and the guide surface 13 has a plurality of protrusions protruding at an arbitrary position in the radial direction. The engaging protrusion 15 is formed. In addition, the mixing cup 5 with respect to the main body 3 is engaged with the engaging protrusion 15 at an arbitrary position corresponding to the engaging protrusion 15 among the lower inner surfaces of the cup base 7 fitted to the guide surface 13. A locking jaw 17 that fixes the protrusion protrudes radially inward.

In addition, the mounting surface 19 having a size enough to allow the locking step 17 to be inserted into the guide surface 13 below any one of the locking protrusions 15 is inserted therethrough. The safety switch 20 is installed in the upper corner part of the main body 3 so that it may be exposed to the outside through this mounting hole 19. As shown in FIG.

The safety switch 20 has a fixing piece 23 that is bent in a large b-shape and two switching pieces 27 integrally formed on the fixing piece 23 as shown in more detail in FIGS. 4 and 5. 27 '), the fixing piece 23 is fixed by a boss 21 protruding from the inside of the upper end surface of the main body 3 and a fastening screw 31 fitted to the boss 21. The switching piece 27 'is relatively long and is inserted relatively far from the relatively small length of the switching piece 27 inserted into the fixed piece 23 at the position adjacent to the boss 21. ). Therefore, the switching piece 27 ′ has a relatively greater elasticity than the switching piece 27. It is more preferable that contact projections 25 are formed on the opposite ends of the pair of switching pieces 27 and 27 'to ensure the energization by the contact of the switching pieces 27 and 27'.

In the middle of the relatively high elastic switching piece 27 ′ positioned adjacent to the mounting hole 19, a switching bundle 29 inserted into the mounting hole 19 and exposed to the outside of the main body 3 is integrated. It is attached by molding.

According to the mixer / crusher 1 equipped with the safety switch 20 according to the present invention having such a configuration, a locking projection when the cup base 7 of the mixing cup 5 is inserted into the upper surface of the main body 3 is provided. After the 15 is aligned with the locking jaw 17 so as not to collide with each other, the locking jaw 17 is inserted into and fixed to the lower portion of the locking protrusion 15 so that the main body 3 and the mixing cup 5 are fastened.

As such, when the locking protrusion 15 and the locking jaw 17 are fastened, the locking jaw 17 presses the switching bundle 29 protruding to the outside through the mounting hole 19, and thus the switching bundle ( 29, the switching piece 27 'integrally with the switching piece 27 is brought into contact with the switching piece 27, so that energization between both ends is achieved.

Therefore, as the safety mode is released by the operation unit 12, and then the power switch is turned on, the mixing operation of the mixer / crusher 1 is started. At this time, even if excessive rocking occurs in the main body 3 or the like by crushing the food having a relatively hard shell, the locking base 15 relative to the main body 3 with respect to the main body 3 by the engaging protrusion 15 and the engaging jaw 17. Since the vertical movement is prevented, the connection of the safety switch 20 is momentarily dropped during operation, thereby enabling a stable operation without causing the mixer / crusher 1 to return to the safe mode inadvertently.

As described above, according to the mixer / crusher of the present invention, when the mixing cup is removed from the main body by attaching a safety switch to the connection portion of the cup base and the main body, the safety switch is turned off and the cutter / crusher enters the safe mode. In the exposed state, the operation of the mixer / crusher inadvertently allows the user to maintain the safety function of the mixer / crusher, which prevents the user from being injured.

In addition, the safety switch is installed together in the fastening means for joining the cup base of the mixer / crusher together with the main body so that the safety switch is not easily released by the shaking of the main body caused by excessive rotational force. This eliminates the need to enter safe mode, enabling a more stable mixer / crusher use.

Claims (4)

A main body 3 having a drive motor 11 and an operation unit 12, a mixing cup 5 mounted at an upper end of the main body 3, and having a food cutting cutter 10 at a lower end thereof, and the mixing cup (5) and a cup base (7) connecting the main body (3), and a plurality of locking projections (15) protruding outward in the radial direction on the guide surface (13) of the outer peripheral portion of the upper surface of the main body (3) In the mixer / crusher 1 which is configured to fix the mixing cup 5 and the main body 3 by a locking jaw 17 formed on the inner bottom surface of the cup base 7 corresponding to the locking projection 15. The mounting hole 19 having a shape corresponding to the locking step 17 is formed on the wall surface of the lower surface of the guide surface 13 of each of the locking protrusions 15. The safety switch 20 is exposed and is turned on and off by the locking step 17 so as to control the power switch operation of the operation unit 12. Mixer / crusher having a fastening structure for both safety switch, characterized in that provided. 2. The safety switch (20) according to claim 1, wherein the safety switch (20) is provided with an N-shaped fixing piece (23) fixed to the boss (21) projecting on the inner surface of the upper surface of the main body (3), and the side surface of the fixing piece (23). A mixer / crusher having a fastening structure for combined use of a safety switch, characterized in that it is composed of a pair of switching pieces (27, 27 ') in the form of a thin plate which are respectively integrally inserted into and extended in parallel. 3. The method of claim 1, wherein the pair of switching pieces 27, 27 ′ is exposed to the outside through the mounting hole 19 in the middle of the switching piece 27 ′ adjacent to the mounting hole 19. Mixer / crusher having a fastening structure for a combined safety switch, characterized in that the switching bundle 29 is attached. 3. The method according to claim 1 or 2, wherein contacting portions (25) are formed at the surface ends of the switching pieces (27, 27 ') facing each other and are energized when they are brought into contact with each other by the approach of the switching pieces (27'). Mixer / Crusher with fastening structure for both safety switches, characterized in that.

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