JP6167304B2 - Hand blender - Google Patents

Description

  The present invention relates to an operation switch provided in a hand blender used in a general home.

  2. Description of the Related Art Conventionally, a hand blender is an instrument that finely pulverizes and mixes food by rotation of a pair of pulverizing blades provided at the tip of a rotating shaft and extending in the centrifugal direction of the rotating shaft.

  Various proposals have been made regarding the configuration and functions of the hand blender. Among them, there is a switch that turns on the power by simply pressing the operation switch, but there is a two-action type that slides and presses (for example, see Patent Document 1).

  FIG. 13 is a side view including a cross-sectional view of a main part of a conventional hand blender described in Patent Document 1. FIG. 14 is a cross-sectional view of a main part of a conventional hand blender described in Patent Document 1.

  Hereinafter, a conventional hand blender operation switch will be described with reference to FIGS. 13 and 14.

  As shown in FIG. 13, the operation switch 2 is provided in the upper part of the main body 1 of the hand blender. The mixer unit 3 is provided at the tip of the body 1 of the hand blender. The mixer unit 3 has a rotary shaft 4 at the center thereof, and a rotary blade 5 at the tip of the rotary shaft 4.

  As shown in FIG. 14, the operation switch 2 slides up and down along the wall surface 6 of the main body, and is always urged upward by urging means (not shown). When the operation switch 2 slides and reaches the lower end position, the operation switch 2 can be pushed in the horizontal direction. The boss 7 of the operation switch 2 passes through the hole 8 of the main body and pushes the first operating element 9 inside. When the force to press the operation switch 2 is loosened, the operation switch 2 is returned to the front position by the movement of the spring 10, and is further returned upward by the urging means (not shown).

  When the first actuator 9 is moved in the horizontal direction by the operation of the operation switch 2, the second actuator 12 connected via the connecting rod 11 is moved downward. Below the second actuator 12, there are a sphere 13 and a third actuator 14, via which the limit switch 15 is turned on. When the limit switch 15 is turned on, the rotating shaft 4 is rotated by the motor power source, the motor control unit, and the motor (all not shown) provided in the main body 1, and the rotary blade 5 at the tip is rotated. Since the second actuator 12 is biased upward by the spring 16, if the force applied to the operation switch 2 is loosened, the operation switch 2 returns to the front by the force of the spring 10. The biased second operating element 12 moves upward, and the first operating element 9 connected to the second operating element 12 by the connecting rod 11 also returns to the front position. The sphere 13 is on the curved portion 17 on the upper surface of the third actuator 14. However, when the main body 1 is tilted, the sphere 13 moves from the curved portion 17 of the third actuator 14 along the inclined surface 18. When the sphere 13 moves, the third actuator 14 cannot be pushed even if the second actuator moves downward.

For example, to make vegetable soup using the conventional hand blender, the mixer unit 3 is pushed into the stewed vegetables in the pan, and the operation switch 2 is slid downward and pushed in the horizontal direction. The actuator 9 moves rearward in the horizontal direction. Further, the second actuator 12 connected by the connecting rod 11 moves downward. Due to the downward movement of the second actuator 12, the sphere 13 and the third actuator 14 are pushed downward, and the limit switch 15 is pushed. Thereby, when the rotary blade 5 rotates at a high speed of, for example, 10,000 rotations / minute, the vegetables are pulverized and mixed, and vegetable soup is easily made.

  When the operation switch 2 is slid up and down and has two actions to push in the horizontal direction, when food is entangled and removed from the rotary blade 5, a finger or a stick is brought closer, and the state of the rotary blade 5 is checked. In order to prevent the switch from being turned on unexpectedly, there are two actions.

JP 2006-325920 A

  However, in the above-described conventional hand blender operation switch, the downward sliding operation and the horizontal pressing operation are continuously performed. Therefore, for the operator, it is not different from the diagonal pressing operation, and it can be said that there are sufficient two actions. However, there has been a problem that the operation switch may be unexpectedly turned on.

  Further, in the configuration of the conventional hand blender operation switch, when the main body 1 is to be used in an oblique posture, the sphere 13 is detached from the curved portion 17 of the third actuator 14, and the limit switch 15 is turned on. It was impossible to do so, and had the problem that it was very inconvenient.

  An object of the present invention is to solve the above-described conventional problems, and to provide a clear two-action switch for an operator and to provide an operation switch for a hand blender that does not unexpectedly turn on the operation switch. To do.

In order to solve the above-described conventional problems, a hand blender of the present invention includes a rotary shaft having a rotary blade in the vicinity of an end thereof, a drive unit that drives the rotary shaft, and an operation switch that operates a power source of the drive unit. The operation switch is movable in a first direction with a click feeling and is movable in a second direction different from the first direction, and has a convex corner portion. A main switch having a protrusion that abuts against the convex corner portion when the slide switch moves in the first direction at the top of the curved portion, and is sandwiched between the main switch and engaged with the slide switch. that has a lock plate, wherein the slide switch, when completion of the movement to the first direction is pushed to the second direction, that the lock plate is pushed, the second direction It is obtained by a structure in which ON the power of the drive unit upon completion of the movement.

  As a result, the click feeling of the two-action operation switch in the first direction and the second direction allows the operator to realize that there are two actions, and when the switch is unexpectedly turned on, the user can feel a click. Therefore, it is difficult to turn on the switch unexpectedly.

  The operation switch of the hand blender according to the present invention provides a clear two-action switch to the operator and does not unexpectedly turn the operation switch on.

Sectional drawing which shows the initial state position of the operation switch of the hand blender which concerns on Embodiment 1 of this invention Sectional drawing which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. Sectional drawing which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. Sectional drawing which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. Sectional drawing which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The rear view which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The rear view which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The rear view which shows the operation state of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The principal part perspective view which shows the principal part of the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The front view which shows the hand blender which concerns on Embodiment 1 of this invention. The front view which shows the operation switch of the hand blender which concerns on Embodiment 1 of this invention. The disassembled perspective view which shows the operation switch of the hand blender which concerns on Embodiment 1 of this invention. Side view showing a conventional hand blender Side sectional view showing a conventional hand blender operation switch

1st invention is provided with the rotating shaft which has a rotary blade in the edge part vicinity, the drive part which drives the said rotating shaft, and the operation switch which operates the power supply of the said drive part, The said operation switch is 1st A slide switch having a convex corner portion and a slide switch at the top of the curved portion . The slide switch is movable in a second direction different from the first direction. Includes a main switch having a protrusion that contacts the convex corner when moving in the first direction, and a lock plate that sandwiches the main switch and is engaged with the slide switch. switch, upon completion of the movement to the first direction is pushed to the second direction, said that the lock plate is pressed, configured to turn oN the power of the drive unit upon completion of the movement to the second direction And the.

  As a result, the click feeling of the two-action operation switch in the first direction and the second direction allows the operator to realize that there are two actions, and when the switch is unexpectedly turned on, the user can feel a click. Therefore, it is difficult to turn on the switch unexpectedly.

  As a result, when the slide switch moves in the first direction, the convex corner portion and the projection formed on the top of the curved portion of the main switch come into contact with each other, and the convex corner portion of the slide switch gets over the projection of the main switch. Thus, it is possible to move with a click feeling when moving in the first direction.

In particular, according to the second invention, in the first invention, guard ribs higher in height than the slide switch are provided on both sides of the slide switch in the first direction in which the slide switch is movable.

  This makes it difficult to turn on the switch unexpectedly due to the provision of guard ribs around the slide switch.

In particular, the third invention further includes a lock lever having a claw engageable with a hook formed on the slide switch in the first invention, and the engagement between the hook formed on the slide switch and the claw of the lock lever. The slide switch is configured to be restricted from moving in the first direction depending on the state.

  Thus, by restricting the movement of the slide switch in the first direction, if the lock switch is slid to the lock side after use, the switch will not be turned on even if the switch is touched unexpectedly.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments. In all the drawings below, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  Further, in the following description, when simply expressed as “upper” or “lower”, it means a state in which the hand blender is normally used, that is, a state in which the mixer unit provided at the tip thereof is directed downward. However, it does not mean strictly in the vertical direction or vertically downward.

(Embodiment 1)
FIG. 1 is a sectional view of an operation switch according to an embodiment of the present invention in an initial state. FIG. 2 is a cross-sectional view showing a state in which the slide switch of the operation switch according to the embodiment of the present invention exceeds the step for clicking. FIG. 3 is a cross-sectional view when the slide switch of the operation switch according to the embodiment of the present invention is at the lower end. FIG. 4 is a cross-sectional view when the main switch of the operation switch according to the embodiment of the present invention is pressed. FIG. 5 is a cross-sectional view showing an operation in which the lock plate according to the embodiment of the present invention slides in the groove of the SW cover. FIG. 6 is a rear view showing a state where the lock switch of the operation switch according to the embodiment of the present invention is turned on. FIG. 7 is a rear view showing a state where the lock switch of the operation switch according to the embodiment of the present invention is turned off. FIG. 8 is a rear view when the lock switch of the operation switch according to the embodiment of the present invention is turned off and the slide switch is at the lower end. FIG. 9 is a perspective view of a state where the lock plate and the lock lever are engaged and the lock switch is locked. FIG. 10 is a front view of the hand blender according to the embodiment of the present invention. FIG. 11 is a front view of the operation switch of the hand blender according to the embodiment of the present invention. FIG. 12 is an exploded perspective view of the operation switch of the hand blender according to the embodiment of the present invention.

  First, the whole structure of the hand blender in Embodiment 1 of this invention is demonstrated based on FIG. As shown in FIG. 10, the rotary shaft 19 extends from the main body 20 of the hand blender and is provided so as to penetrate the mixer unit 21. The rotating shaft 19 is rotationally driven by a motor (not shown) which is a driving unit provided in the main body 20 of the hand blender. A rotary blade 40 is provided near the tip of the rotary shaft 19. An operation unit 22 that operates a power source (not shown) of a motor that is a drive unit is configured on the upper portion of the main body 20.

  Next, the operation part 22 which is the operation switch of the hand blender in Embodiment 1 of this invention is demonstrated using FIG.1, FIG.11, FIG.12.

The slide switch 23 has a claw 23 a on the back surface, and the claw 23 a passes through the square hole 24 a of the main switch 24 and is engaged with the square hole 25 a of the lock plate 25. The main switch 24 is sandwiched with the slide switch 23 and the lock plate 25 engaged, and can slide up and down. The plate spring 26 urges the lock plate 25 upward with respect to the main switch 24. The main switch 24 has a curved portion 24c at the center of the square hole 24a, and a convex portion 24b at the top of the curved portion 24c. The four claws 25b in the vertical direction on both sides of the lock plate 25 are slidably engaged with the four grooves 27a inside the switch cover 27, respectively. When the lock plate 25 is slidably engaged with the groove 27a of the switch cover 27, the slide switch 23 and the main switch 24 engaged with the lock plate 25 also slide together.

  A lock switch 28 is fitted to the upper portion of the switch cover 27 from the front, and is engaged with a claw 29a (not shown) of the lock lever 29 while the switch cover 27 is sandwiched by a claw 28a of the lock switch 28. In order to suppress the rattling of the lock lever 29, the lever holder 30 holds it from the back surface of the switch cover 27. Guard ribs 27 b are provided on both side surfaces of the switch cover 27. The length of the guard rib 27 b is equal to or longer than the length from the upper end to the lower end of the main switch 24, and the height of the top portion 27 </ b> C of the switch cover 27 is higher than the top portion of the slide switch 23.

  The operation of the operation switch of the hand blender according to Embodiment 1 of the present invention configured as described above will be described with reference to FIGS. In FIG. 1, which is the initial state of the operation switch, the lock plate 25 engaged with the slide switch 23 is urged upward by a plate spring 26. Further, the switch rod 31 and the limit switch 33 are separated from each other, and the limit switch 33 is not pushed.

  In FIG. 1, when the operator depresses the slide switch 23 downward (leftward in FIG. 1) against the urging force of the plate spring 26, the convex corner portion 23b of the slide switch 23 is moved as shown in FIG. The convex portion 24b of the main switch 24 can be boarded. Here, when the convex corner portion 23b of the slide switch 23 can get on the convex portion 24b of the main switch 24, the convex corner portion 23b of the slide switch 23 abuts on the convex portion 24b of the main switch 24, and the main switch 24 The 24 convex portions 24b can be boarded, and the operator feels a click.

  Further, when the slide switch 23 is pushed down (to the left in FIG. 2), the slide switch 23 comes into contact with the wall portion of the main switch 24 and the state shown in FIG. When the slide switch 23 is pushed in the back direction of the main body 20 (downward in FIG. 3) from the state of FIG. 3, the state of FIG. 4 is obtained. By pressing the slide switch 23 in the back direction (downward in FIG. 3), the main switch 24 and the lock plate 25 are also moved together to the position shown in FIG. When the lock plate 25 is pressed, the switch rod spring 32 is pressed via the switch rod 31 and the limit switch 33 is pressed. When the limit switch 33 is pressed, the power source of the drive unit (motor) that drives the rotary shaft 19 having the rotary blade 40 can be turned on.

  Next, a configuration for guiding the movement of the slide switch 23 will be described with reference to FIG. FIG. 5 shows the relationship between the claw 25 b of the lock plate 25 and the switch cover groove 27 a of the switch cover 27. The switch cover groove 27 a of the switch cover 27 has an L shape, and the claw 25 b of the lock plate 25 is movable along the switch cover groove 27 a of the switch cover 27. 5A shows the initial position of the slide switch 23, that is, the state of FIG. 1, and FIG. 5B shows the position of the slide switch 23 at the lower end, that is, the state of FIG. (C) shows the position where the slide switch 23 is pushed, that is, the position shown in FIG. Due to the movement of the slide switch 23, the claw 25b of the lock plate 25 moves downward along the groove 27a of the switch cover 27, and the groove 27a is bent in the depth direction when it reaches the lower end position in FIG. The slide switch 23 can be pushed in the back direction.

The operation of the lock switch 28 will be described with reference to FIGS. 6 to 9 and FIG. Although the lock switch 28 displayed in FIG. 11 is located on the left side, the lock switch 28 is OFF at this time, and the slide switch 23 can be slid. Conversely, when it is located on the right side, the movement of the slide switch 23 is locked by the lock switch 28 and cannot be slid.

  FIG. 7 is a rear view corresponding to FIG. 1 in which the slide switch 23 is turned off by the lock switch 28, and FIG. 6 is a rear view corresponding to FIG. 1 in a state in which the slide switch 23 is locked. It is. That is, when the slide switch 23 is positioned in FIG. 1, there are a state in which the slide switch 23 can be moved by the lock switch 28 (FIG. 7) and a state in which the slide switch 23 cannot be moved (FIG. 6). Become. FIG. 8 is a rear view corresponding to FIG. 3 in a state in which the slide switch 23 is turned off and the slide switch 23 is set downward. 9 is a perspective view showing the positional relationship between the lock plate 25 and the lock lever 29 in the state shown in FIG. 6, and the hook 25c of the lock plate 25 and the claw 29a of the lock lever 29 are engaged as shown in FIGS. By being stopped, the lock plate 25 cannot move to the left in FIG. Further, as shown in FIG. 7, the lock plate 25 can be moved leftward in FIG. 7 by releasing the hook 25c of the lock plate 25 and the claw 29a of the lock lever 29. Since the slide switch 23 and the lock plate 25 are engaged with each other by the claw 23a of the slide switch 23, the slide switch 23 cannot slide because the lock plate 25 can slide.

  The operation of the operation switch of the hand blender configured as described above will be described below.

  For example, the case where vegetable soup is made using the hand blender of the present embodiment will be described. The lock switch 28 is in the right direction, that is, in the locked state. In this state, the slide switch 23 is in the locked state shown in FIG. 6 and cannot be slid. First, the lock switch 28 is moved leftward, that is, to the position of FIG. 11 in the OFF state. The mixer unit 21 is pushed into the stewed vegetables in the pan, and the slide switch 23 is slid downward. At this time, when the convex corner portion 23 b of the slide switch 23 gets over the convex portion 24 b of the main switch 24, the operator can feel a click feeling. Then, the slide switch 23 is slid downward, reaches the lower end, and further pushed in the horizontal direction toward the back of the main body 20, the switch rod 31 is pushed through the lock plate 25, and the switch rod 31 pushes the limit switch 33. Push. When the limit switch 33 is pressed, the motor is driven to rotate, the rotating shaft 19 of the mixer unit 21 is rotated, and the rotary blade 40 is rotated to cut and cook vegetables. When cooking is finished and the load on the slide switch 23 is removed, the lock plate 25, the main switch 24, and the slide switch 23 are pushed forward through the switch rod 31 by the action of the spring 32. The lock plate 25 and the slide switch 23 are returned upward by the action of the spring 26. Further, the slide switch 23 cannot be slid by operating the lock switch 28 to move rightward, that is, in a locked state.

As described above, in the present embodiment, when the convex corner portion 23b on the back surface of the slide switch 23 gets over the convex portion 24b of the main switch 24, it is possible to give the operator a click feeling. Thereby, it is possible to feel a click feeling during the operation of the slide switch 23, that is, the operation of sliding from the top to the bottom and pressing it to the back. If you press slide + press alone, it will feel as if you are pushing diagonally as an operator's sense, but if there is a click feeling in the middle, you can understand that there are two stages and it will operate unexpectedly Can be reduced. Also, with these configurations, a two-action operation can be realized regardless of the posture of the hand blender itself, and unexpected switching can be reduced. In addition, the convex part 24b which gives this click feeling is provided at a position close to the initial stage of the sliding process of the slide switch 23. By doing so, there is an effect that the click itself becomes independent and it is easy to feel the click feeling. If the convex part 24b is provided in the latter half part of the sliding process, the click feeling becomes close to the switching part of the process of sliding and pressing, and it becomes difficult to feel the click feeling.

  After being used for cooking, the lock switch 28 is moved to the left side, that is, the lock side. Thereby, even if a young child touches it, or even if it touches the slide switch 23 unexpectedly, since the slide switch 23 does not slide, it can reduce that it operates unexpectedly.

  Further, the guard rib 27 b protrudes from the top 23 c of the slide switch 23. Therefore, even if the operation unit 22 is unexpectedly grasped by hand, the slide switch 23 does not slide by touching the guard rib 27b, so that it is possible to reduce the unexpected operation.

  Further, in the state where the slide switch 23 is slid and pressed to rotate the motor and operate, that is, in the state of the lock plate 25 shown in FIG. 4, the hook 25c of the lock plate 25 is locked as shown in FIG. The lock lever 29 does not move because it is in contact with the lever 29. Therefore, since the lock switch 28 cannot be moved, it is possible to prevent an erroneous operation that erroneously locks the lock switch 28 during a driving operation.

  Further, a lock switch 28 is disposed immediately above the main switch 24. Immediately after the operation of the slide switch 23 and the main switch 24, the lock switch 28 can be operated and locked, which is convenient.

  The lock switch 28 is configured to be locked when pressed from the left to the right, and to be locked OFF when pressed from the left to the right. With this configuration, when the main body 20 is grasped from the rear side with the right hand, after the slide switch 23 is operated with the index finger or the middle finger and finished, immediately, the lock switch 28 can be easily locked with the index finger by pushing from the left to the right. It is easy to use.

  In addition, it is possible to provide an operation switch that is less likely to be erroneously operated regardless of the orientation.

  The operation switch of the hand blender according to the present invention can be applied not only to the hand blender but also to a hand-held tool holder.

DESCRIPTION OF SYMBOLS 19 Rotating shaft 20 Main body 21 Mixer unit 22 Operation part 23 Slide switch 23b Convex corner part 24 Main switch 24b Convex part 24c Bending part 25 Lock plate 25b Claw 25c Hook 27 Switch cover 27a Groove 27b Guard rib 28 Lock switch 29 Lock lever 29a Claw 31 Switch rod 33 Limit switch 40 Rotary blade

Claims (3)

A rotary shaft having a rotary blade near the end; and
A drive unit for driving the rotating shaft;
An operation switch for operating the power supply of the drive unit,
The operation switch is
A slide switch that is movable in a first direction with a click feeling, is movable in a second direction different from the first direction, and has a convex corner portion ;
A main switch having a protrusion that abuts the convex corner portion when the slide switch moves in the first direction on the top of the curved portion;
A lock plate that is sandwiched between the main switch and engaged with the slide switch,
The slide switch is pushed in the second direction when the movement in the first direction is completed, and the lock plate is pushed so that the drive unit is turned on when the movement in the second direction is completed. Dobrenda . The hand blender according to claim 1, wherein guard ribs having a height higher than that of the slide switch are provided on both sides of the slide switch in a first movable direction of the slide switch. A lock lever having a hook engageable with a hook formed on the slide switch is further provided, and the slide switch is moved in the first direction depending on the engagement state between the hook formed on the slide switch and the hook of the lock lever. The hand blender according to claim 1 to be regulated.

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