CN107752805B - hand blender - Google Patents

Abstract

The present invention provides a hand-held blender, comprising: a mixer unit provided at one end of the main body and having a blade unit capable of cutting an object to be cooked; a drive source that generates a drive force for rotating the blade unit; and a push switch (33) provided at the other end of the main body and used for switching the driving state of the driving source. The push-button switch (33) has a top plate (35), the top plate (35) is exposed to the outside and has a center portion (35b) and an outer peripheral portion (35a), and the push-button switch (33) is configured such that the drive source is driven when the center portion (35b) of the top plate (35) is pressed, and such that the drive source is not driven when a part of the outer peripheral portion (35a) of the top plate (35) is pressed. Thus, a hand-held mixer capable of suppressing an accidental rotation of a blade unit is provided.

Description

hand mixer

technical field

The present invention relates to a hand-held blender, in particular to a push button switch for rotating a blade unit of the hand-held blender.

Background technique

There have been known hand mixers of various configurations having a push button switch for rotating the blade unit.

For example, the specification of US Patent Application Publication No. 2012/0080295 discloses a hand blender having a configuration in which an end portion away from the main body of the blade unit has a push button switch for switching, for example, a switch capable of generating a rotation of the blade unit. The driving state of the driving source of the rotational driving force.

However, in the conventional hand mixer, there is still room for improvement in suppressing the unexpected rotation of the blade unit.

SUMMARY OF THE INVENTION

The present invention provides a hand blender capable of suppressing accidental rotation of a blade unit.

The hand mixer of the present invention includes: a main body; a mixer unit provided at one end of the main body and having a blade unit capable of cutting the conditioned substance; a driving source that generates a driving force for rotating the blade unit; and a push button switch , which is arranged at the other end of the main body and is used to switch the driving state of the driving source. The push button switch has a top plate that is exposed to the outside and has a center portion and an outer peripheral portion. In addition, the push button switch is configured to drive the drive source when the central portion of the top plate is pressed, and not to drive the drive source when a part of the outer peripheral portion of the top plate is pressed.

According to this hand mixer, unintended rotation of the blade unit can be suppressed.

Description of drawings

1 : is the perspective view which looked at the hand mixer which concerns on embodiment of this invention from diagonally downward.

FIG. 2 is a side view of the hand blender of FIG. 1 .

3 is an exploded perspective view showing an example of a connection structure between a main body and a mixer unit included in the hand mixer of FIG. 1 .

FIG. 4 is a partially enlarged cross-sectional view of a mixer unit included in the hand mixer of FIG. 1 .

Fig. 5 is a partially enlarged perspective view of the hand mixer of Fig. 1 viewed from obliquely above.

FIG. 6 is a partially enlarged perspective view showing the hand mixer of FIG. 1 in a partial cross section.

FIG. 7 is a partially enlarged cross-sectional view showing a state before the push button switch is pressed in the hand mixer of FIG. 1 .

FIG. 8 is a perspective view of the positional relationship of components related to the push button switch viewed from the first switch side in the state shown in FIG. 7 .

FIG. 9 is a perspective view of the positional relationship of components related to the push button switch viewed from the second switch side in the state shown in FIG. 7 .

FIG. 10 is a partial enlarged cross-sectional view of FIG. 9 .

11 is a perspective view showing a state in which components related to the push button switch are held by a holding member built into the main body in the state shown in FIG. 7 .

12 is a partially enlarged cross-sectional view showing a state in which the center portion of the first switch of the push button switch is pressed in the hand mixer of FIG. 1 .

FIG. 13 is a perspective view of the positional relationship of components related to the push button switch viewed from the first switch side in the state shown in FIG. 12 .

FIG. 14 is a perspective view of the positional relationship of components related to the push button switch viewed from the second switch side in the state shown in FIG. 12 .

FIG. 15 is a partially enlarged cross-sectional view showing a state immediately before the second switch of the push button switch is pressed in the hand mixer of FIG. 1 .

16 is a perspective view showing a state in which components related to the push button switch are held by a holding member built into the main body in the state shown in FIG. 12 .

17 is a partially enlarged cross-sectional view showing a state in which a part of the outer peripheral portion of the first switch of the push button switch is pressed in the hand mixer of FIG. 1 .

FIG. 18 is a perspective view of the positional relationship of components related to the push button switch viewed from the first switch side in the state shown in FIG. 17 .

19 is a perspective view showing a state in which components related to the push button switch are held by a holding member built into the main body in the state shown in FIG. 17 .

Detailed ways

(Insights that form the basis of the present invention)

The inventors of the present invention have conducted intensive studies in order to suppress unexpected rotation of the blade unit, and have obtained the following findings.

In the conventional hand mixer, a mixer unit with a built-in blade unit is provided at one end of the main body, and a push button switch is provided at the other end of the main body. The hand mixer usually rotates the blade unit with the mixer unit inserted into the container containing the conditioned substance. Thereby, the to-be-conditioned material in the container is cut, and it is stirred and mixed. At this time, the hand mixer is used in a state in which one end of the main body on which the mixer unit is provided faces downward and the other end of the body on which the push switch is provided faces upward. Thereby, the user can easily perform the operation while confirming the position of the push button switch with the naked eye. As a result, the user can operate the push button switch without accidentally rotating the blade unit.

However, the rotation of the blade unit is sometimes hindered, for example, when the conditioning material is jammed in the mixer unit. At this time, the user usually changes the posture of the hand mixer in order to observe the blade unit with the naked eye. Specifically, the user may change the posture of the hand mixer so that one end of the main body on which the mixer unit is provided faces upward and the other end of the main body on which the push switch is provided faces downward. In this case, the blade unit is located in the vicinity of the user's face. In addition, the user cannot visually confirm the position of the push button switch.

At this time, when the user moves the hand mixer downward while the posture of the hand mixer is reversed, the push button switch may come into contact with, for example, a table on which a container containing the object to be prepared is placed, causing the The push button switch is pressed. As a result, there is a possibility that the blade unit rotates unexpectedly and causes trouble to the user.

In addition, the hand blender has a certain length (eg, about 40 cm) because it is used by being inserted into the container containing the conditioned substance. Therefore, when reversing the posture of the hand mixer, the user holds the other end of the main body with one hand and holds the one end of the main body with the other hand. At this time, the blade unit may be located relatively close to the user's face in consideration of the length of an average person's arm.

In view of this, the inventors of the present invention have studied and found that, when the push button switch is pressed against the table on which the container containing the conditioned substance is placed, it is usually the outer peripheral portion of the top plate of the push button switch. The part of the top plate is pressed instead of the central part of the top plate.

Furthermore, as shown in the present application, the inventors of the present invention have found that even if the drive source is not driven when a part of the outer peripheral portion of the top plate is pressed, the user can easily observe it with the naked eye during normal use. roof. Therefore, the user can drive the driving source by moving the finger from the outer peripheral portion to the central portion of the top plate by feeling. Thereby, the knowledge that the fall of the usability of a hand mixer can be suppressed was acquired.

Based on these new findings, the inventors of the present invention have completed the following inventions.

According to the first aspect of the present invention, the hand mixer includes: a main body; a mixer unit provided at one end of the main body and having a blade unit capable of cutting the object to be conditioned; and a drive source that generates a force for rotating the blade unit a driving force; and a button switch, which is provided at the other end of the main body and is used to switch the driving state of the driving source. The push button switch has a top plate that is exposed to the outside and has a center portion and an outer peripheral portion. In addition, the push button switch is configured to drive the drive source when the central portion of the top plate is pressed, and not to drive the drive source when a part of the outer peripheral portion of the top plate is pressed.

According to the hand mixer of the second aspect of the present invention, the push button switch is configured to drive the drive source when the center portion of the top plate is displaced by a predetermined displacement amount or more in the pressing direction. In addition, the top plate is inclined so that when a part of the outer peripheral part of the top plate of the push switch is pressed in the pressing direction, the displacement amount of the part of the outer peripheral part is larger than the displacement amount of the center part, and the displacement amount of the center part is configured to be larger than the displacement amount of the center part. The preset displacement amount is small.

According to the hand mixer of the third aspect of the present invention, the top plate constitutes a part of the end surface of the other end of the main body, and a part of the outer peripheral part is exposed to the outside.

According to the hand mixer of the 4th aspect of this invention, the center part of a top plate is comprised so that it may be recessed rather than the part around the center part.

According to the hand blender according to the fifth aspect of the present invention, the push button switch includes a first switch and a second switch, wherein the first switch has a top plate, and the second switch is provided on the side surface of the main body, and the hand blender is configured such that only The drive source is driven only when both the first switch and the second switch are pressed.

According to the hand mixer of the sixth aspect of the present invention, when the center portion of the top plate of the first switch is displaced by a predetermined displacement amount or more in the pressing direction, the second switch can be switched from standby The position moves to the drive position, and when the second switch is moved to the drive position, the drive source is driven.

According to the hand mixer of the seventh aspect of the present invention, the hand mixer is configured such that by pushing the first switch, the lock of the second switch is released, and the second switch is in a state where it can be pushed in, and by pushing the first switch 2 The switch is pressed so that the drive source is driven.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this invention is not limited to this embodiment.

In the following, for convenience of description, terms indicating directions such as "up" and "down" are used assuming a state in normal use, but are not intended to limit the use state of the hand mixer of the present invention.

(Embodiment)

Hereinafter, the structure of the hand mixer which concerns on embodiment of this invention is demonstrated using FIG.1 and FIG.2.

1 : is the perspective view which looked at the hand mixer which concerns on embodiment of this invention from diagonally downward. FIG. 2 is a side view of the hand blender of FIG. 1 .

As shown in FIGS. 1 and 2 , the hand mixer of this embodiment has a main body 1 and a mixer unit 2 . The mixer unit 2 is detachably attached to the lower part of the main body 1 . The total length of the hand mixer which connects the main body 1 and the mixer unit 2 is, for example, 40 cm. In addition, the mixer unit 2 is also sometimes referred to as a mixer attachment.

The main body 1 has a cylindrical outer surface. The outer surface is the part that is gripped by the user's hand. The main body 1 incorporates a motor M (refer to FIG. 2 ) that generates a driving force for rotating a rotating shaft 8 (refer to FIG. 4 for details) to be described later. In addition, the electric motor M is an example of a drive source.

The main body 1 has the operation part 3 in the upper part which comprises the other end part 1c. A user's instruction, such as switching of the operation mode, is input to the control unit CONT (see FIG. 6 ) for controlling the drive of the electric motor M through the operation unit 3 . The operation unit 3 will be described in detail later.

In addition, the main body 1 is connected to a power cord 4 on the upper side of the side surface. The power supply line 4 is connected to, for example, a commercial power supply, and electric power is supplied to the motor M through the power supply line 4 . Thereby, the rotation shaft 8 can be rotated by the electric motor M. As shown in FIG.

The mixer unit 2 is inserted into a container (not shown) containing to-be-prepared substances such as vegetables and fruits, and has the functions of cutting the to-be-prepared substances and stirring and mixing them.

The mixer unit 2 includes a bell-shaped attachment and detachment portion 5 opened upward, a bell-shaped cover 6 opened downward, and a cylindrical communication pipe 7 . The communication pipe 7 penetrates the top part 5c of the attaching/detaching part 5 and the top part 6a of the cover 6, and communicates the inner space of the attaching/detaching part 5 and the inner space of the cover 6 with each other.

Next, the connection structure between the main body 1 and the mixer unit 2 will be described using FIG. 3 .

FIG. 3 is an exploded perspective view showing an example of a connection structure between the main body 1 and the mixer unit 2 included in the hand mixer of FIG. 1 .

As shown in FIG. 3 , the attaching and detaching portion 5 has a female thread portion 5 a that is screwed into a male thread portion 1 a provided at a lower end portion of the main body 1 . Thereby, the mixer unit 2 is detachably connected to the lower end part constituting the one end part 1d of the main body 1 via the attaching and detaching part 5 .

Moreover, the attaching/detaching part 5 has the engaging recessed part 5b provided in the inner peripheral surface. The lower end portion of the main body 1 has an engaging convex portion 1b provided at a position corresponding to the engaging concave portion 5b. In addition, the engaging concave portion 5b of the attaching and detaching portion 5 is engaged with the engaging convex portion 1b of the main body 1 at the time of attaching and detaching. At this time, an appropriate snap feeling is generated when engaging. Thereby, the user can easily recognize the attachment and detachment between the attaching and detaching part 5 and the main body 1 .

The hand blender was constructed as above.

Hereinafter, the structure of the mixer unit 2 of a hand mixer is demonstrated using FIG. 4. FIG.

FIG. 4 is a partially enlarged cross-sectional view of the mixer unit 2 .

As shown in FIG. 4, the mixer unit 2 has at least a communication pipe 7, a rotating shaft 8, a blade unit 9, and the like. The rotating shaft 8 is provided to extend in the vertical direction inside the cover 6 . The blade unit 9 is provided on the lower end portion 8 a of the rotating shaft 8 so as to be rotatable around the rotating shaft 8 .

The rotating shaft 8 is provided to penetrate the communication pipe 7 inside the communication pipe 7 . At this time, the rotating shaft 8 is arranged so that its upper end portion is located in the attaching and detaching portion 5 , and its lower end portion 8 a is located below the lower end portion 7 a of the communication pipe 7 . The rotating shaft 8 is configured to rotate, for example, rightward (clockwise) when the mixer unit 2 is viewed from below by receiving a driving force from the motor M (see FIG. 2 ) in the main body 1 . In addition, in the present embodiment, the rotating shaft 8 is rotated by the driving force of the electric motor M at a speed of, for example, about 10,000 revolutions per minute (rpm).

As shown in FIG. 4 , an annular partition wall member 10 is provided on the outer peripheral surface of the communication pipe 7 in the vicinity including the lower end portion. A seal 11 is provided between the partition wall member 10 and the inner wall surface 6 b of the cover 6 . The seal 11 seals watertightly between the inner wall surface 6b of the cover 6 and the outer peripheral surface of the communication pipe 7, and can prevent the entry of objects to be conditioned.

Moreover, as shown in FIG. 4, the inner peripheral surface of the communication pipe 7 is provided with the bearing 12 in the vicinity of a lower end part, and this bearing 12 supports the rotation shaft 8 so that rotation of the rotation shaft 8 may be possible.

In addition, a seal (not shown) for waterproof sealing may be provided on the inner peripheral surface of the lower end portion of the communication pipe 7 . Thereby, the to-be-conditioned substance can be prevented from entering into the communication pipe 7 .

As shown in FIG. 4 , the blade unit 9 of the mixer unit 2 is attached to the lower end portion 8 a of the rotating shaft 8 that protrudes downward from the partition wall member 10 . The blade unit 9 rotates around the rotation shaft 8 in accordance with the rotation of the rotation shaft 8 . In addition, in the present embodiment, the blade unit 9 is formed by, for example, bending, punching, grinding, or the like on a single metal plate.

As shown in FIG. 1 or FIG. 4 , the blade unit 9 has a plurality of blades 21 and 22 . The blades 21 and 22 are arranged to be point-symmetrical or substantially point-symmetrical about the rotation axis 8 in a plan view. In addition, the blades 21 and 22 can be rotated about the rotation shaft 8 in the cover 6 . As a result, the blades 21 and 22 constituting the blade unit 9 cut the material to be conditioned, and are stirred and mixed.

The mixer unit 2 is configured as described above.

Hereinafter, the configuration of the operation unit 3 will be described in more detail with reference to FIGS. 5 and 6 .

Fig. 5 is a partially enlarged perspective view of the hand mixer of Fig. 1 viewed from obliquely above. FIG. 6 is a partially enlarged perspective view showing the hand mixer of FIG. 1 in a partial cross section.

As shown in FIGS. 5 and 6 , the operation unit 3 includes a display unit 31 that displays an operation mode, and a push button switch 32 that switches the drive state of the electric motor M constituting the drive source.

The push button switch 32 is constituted by, for example, a switch that performs a momentary operation that maintains an operating state only while being pressed.

In the following description, a configuration in which the push button switch 32 includes the first switch 33 and the second switch 34 will be described as an example.

In other words, the push button switch 32 of the present embodiment is configured to drive the motor M only when both the first switch 33 and the second switch 34 are pressed. Specifically, the first switch 33 constitutes an unlock switch for releasing the locked state of the second switch 34 . On the other hand, the second switch 34 constitutes a main switch for switching the drive state of the motor M.

The display unit 31 and the first switch 33 are provided on the end surface on the side of the other end portion 1 c of the main body 1 . At this time, the first switch 33 is provided at a position where the user's thumb can reach when the user holds the outer surface of the main body 1 with one hand.

As shown in FIG. 6 , a control unit CONT for controlling the driving of the motor M is provided inside the main body 1 below the display unit 31 .

The second switch 34 is provided on the side surface in the vicinity of the other end portion 1c of the main body 1 (for example, the side where the power cord 4 is provided) (see FIG. 2 ). At this time, the second switch 34 is provided at a position where any fingers other than the user's thumb can be reached when the user holds the outer surface of the main body 1 with one hand.

Moreover, the 1st switch 33 has the top plate 35 which is exposed to the outside, and has the outer peripheral part 35a and the center part 35b. The top plate 35 constitutes a part of the end surface on the side of the other end portion 1 c of the main body 1 . A part of the outer peripheral part 35a of the top plate 35 (the side of the part not adjacent to the display part 31) is configured not to be surrounded by ribs or the like and to be exposed to the outside. The center portion 35b of the top plate 35 is configured to be recessed toward the inside of the main body 1 as compared with the portion around the center portion 35b.

In the present embodiment, the push button switch 32 is configured such that the center portion 35b of the top plate 35 of the first switch 33 is displaced in the pressing direction (downward during normal use) by a predetermined displacement amount (for example, 1.4 mm to 3.0 mm). mm) or more, the second switch 34 can be actuated. When the user presses the second switch 34 in a state where the second switch 34 can be operated, the motor M is driven. In other words, in the hand mixer of this embodiment, when the outer peripheral part 35a of the top plate 35 is press-fitted, the center part 35b is displaced by about 1.3 mm. Therefore, if the displacement amount of the center part 35b which can operate|moves is set to the said 1.4 mm or more, it becomes possible to operate a hand mixer without malfunction.

The top plate 35 is provided so as to be movable in the pressing direction (for example, the vertical direction). Then, as shown in FIG. 6 , when the top plate 35 is not pressed in the pressing direction, it is urged upward by, for example, a spring SP. Thereby, the top plate 35 is arranged so as to be flush or substantially flush with the surface of the display portion 31 , and the spring SP is an example of an elastic member.

The operation unit 3 is configured as described above.

Hereinafter, based on the operation of the push button switch 32 of the operation unit 3 , the operation and function of each part will be described with reference to FIGS. 7 to 19 .

First, the positional relationship with each part before the push button switch 32 is pressed will be described with reference to FIGS. 7 to 11 .

FIG. 7 is a partially enlarged cross-sectional view showing a state before the push button switch 32 is pressed. FIG. 8 is a perspective view of the positional relationship of components related to the push button switch 32 viewed from the side of the first switch 33 in the state shown in FIG. 7 . FIG. 9 is a perspective view of the positional relationship of components related to the push button switch 32 viewed from the second switch 34 side in the state shown in FIG. 7 . FIG. 10 is a partial enlarged cross-sectional view of FIG. 9 . FIG. 11 is a perspective view showing a state in which components related to the push button switch 32 are held by the holding member H built in the main body 1 in the state shown in FIG. 7 .

As shown in FIG. 7 , on the lower surface of the center portion 35b of the top plate 35, a protruding portion 35c protruding downward is provided. A release lever 36 is provided below the protruding portion 35c.

As shown in FIGS. 7 and 9 , the unlock lever 36 includes a first lever 36a disposed below the top plate 35, a rotation shaft 36b, a pair of second levers 36c and 36c, a hook portion 36d, and the like.

One end portion 36a1 of the first lever 36a is fixed to the center portion of the rotating shaft 36b. The other end portion 36a2 of the first rod 36a extends laterally (a direction intersecting (eg, orthogonal) with respect to the vertical direction and the axial direction of the rotation shaft 36b) so as to be arranged at a position below the projection portion 35c of the top plate 35. That is, the first lever 36a is provided so as to be able to rotate with the other end portion 36a2 as a free end. In other words, when the top plate 35 is pressed in the pressing direction (downward) against the urging force of the spring SP, the first lever 36a of the unlock lever 36 comes into contact with the protrusion 35c. Thereby, the 1st lever 36a rotates downward centering on the rotating shaft 36b.

The rotation axis 36b is set to be orthogonal to the first rod 36a and the pair of second rods 36c. One end portion 36c1 of the second lever 36c is fixed to both end portions of the rotating shaft 36b, respectively. Therefore, when the first lever 36a is rotated around the rotation shaft 36b, the pair of second levers 36c are also rotated around the rotation shaft 36b.

The hook part 36d is provided in the other end part 36c2 which is the free end of the 2nd lever 36c. The hook part 36d is provided so that the recessed part 37a provided in the upper part of the side surface of the switch link 37 can be engaged.

The switch link 37 is normally urged downward by a spring 38 . Thereby, the switch link 37 attempts to rotate the second lever 36c around the rotation shaft 36b in a state where the hook portion 36d is engaged with the recessed portion 37a. In other words, the switch link 37 is configured such that the switch link 37 is lifted upward against the urging force of the spring 38 by engaging with the hook portion 36d.

Further, the switch link 37 has a lock portion 37b in the vicinity of the protruding portion 34a of the second switch 34 . The locking portion 37b is in contact with the protruding portion 34a provided in the second switch 34, thereby restricting the movement of the second switch 34 in the pressing direction (inward direction of the main body 1). A through hole 37c capable of receiving the protruding portion 34a of the second switch 34 is provided below the locking portion 37b.

The second switch 34 has a rotating shaft 34b at the upper end. When the second switch 34 is pressed in the pressing direction (the inner surface side of the main body 1 ), the second switch 34 rotates around the rotation shaft 34b. In addition, in the standby state in which the second switch 34 is not pressed in the pressing direction, the second switch 34 is urged in the direction opposite to the pressing direction of the second switch 34 by the action of the spring 39 . Thereby, the second switch 34 is held at the standby position P1 shown in FIGS. 8 and 9 .

Each part is arranged as above before the push button switch 32 is pressed.

Next, the positional relationship between the center portion 35b of the push button switch 32 and the respective portions in the pressed state will be described with reference to FIGS. 12 to 16 .

12 is a partially enlarged cross-sectional view showing a state in which the center portion 35b of the first switch 33 of the push switch 32 is pressed. FIG. 13 is a perspective view of the positional relationship of components related to the push button switch 32 viewed from the side of the first switch 33 in the state shown in FIG. 12 . FIG. 14 is a perspective view of the positional relationship of components related to the push button switch 32 viewed from the second switch 34 side in the state shown in FIG. 12 . FIG. 15 is a partially enlarged cross-sectional view showing a state immediately before the second switch 34 of the push button switch 32 is pressed. FIG. 16 is a perspective view showing a state in which components related to the push button switch 32 are held by the holding member H built in the main body 1 in the state shown in FIG. 12 .

First, as shown by the hollow arrow in FIG. 12 , the user presses the center portion 35b of the first switch 33 in the pressing direction by a predetermined displacement amount or more. At this time, the protrusion 35c of the top plate 35 comes into contact with the other end 36a2 which is the free end side of the first lever 36a of the unlock lever 36, and the other end 36a2 is pressed downward. Thereby, the protrusion part 35c makes the 1st lever 36a rotate downward centering on the rotating shaft 36b. At the same time, the pair of second rods 36c fixed to the rotating shaft 36b also rotates, for example, upward about the rotating shaft 36b.

As shown in FIGS. 13 and 14 , the hook portion 36d of the second lever 36c is engaged with the recessed portion 37a of the switch link 37 in accordance with the rotation of the second lever 36c. Thereby, the switch link 37 is lifted upward against the urging force of the spring 38 .

At this time, as shown in FIG. 15 , the through hole 37 c of the switch link 37 is arranged at a position facing the protruding portion 34 a of the second switch 34 . Thereby, the second switch 34 can be moved from the standby position P1 shown in FIGS. 8 and 9 to the drive position P2 shown in FIGS. 13 and 14 . In the above state, when the user presses the second switch 34, the protrusion 34a is inserted into the through hole 37c, and the second switch 34 is moved to the driving position P2. Thereby, the electric motor M which is a drive source is driven.

In addition, in the hand mixer of the present embodiment, when the center portion 35b of the top plate 35 is not displaced in the pressing direction by a predetermined displacement amount or more, the movement of the second switch 34 from the standby position P1 is locked by the switch link 37 Part 37b is locked. In other words, the hand mixer is configured so that the movement of the second switch 34 from the standby position P1 to the drive position P2 is restricted.

When the push button switch 32 is pressed, each part operates and functions as described above.

Next, the positional relationship of each part in the state in which the outer peripheral part 35a of the push button switch 32 is pressed is demonstrated using FIGS. 17-19.

17 is a partially enlarged cross-sectional view showing a state in which a part of the outer peripheral portion 35a of the first switch 33 is pressed. FIG. 18 is a perspective view of the positional relationship of components related to the push button switch 32 viewed from the side of the first switch 33 in the state shown in FIG. 17 . FIG. 19 is a perspective view showing a state in which components related to the push button switch 32 are held by the holding member H built in the main body 1 in the state shown in FIG. 17 .

As shown in FIG. 17 , as described above, the top plate 35 is configured to be inclined downward from, for example, the power cord 4 side in the end surface in the vicinity of the other end portion 1 c of the main body 1 . Therefore, when a part of the outer peripheral part 35a of the first switch 33 is pressed, the local displacement amount of the outer peripheral part 35a becomes larger than the displacement amount when the central part 35b of the first switch 33 is pressed. At this time, the outer peripheral portion 35 a of the first switch 33 is in contact with the main body 1 . Therefore, the displacement amount of the center portion 35b of the first switch 33 is smaller than the displacement amount required for releasing the lock of the second switch 34 set in advance.

In other words, even if part of the outer peripheral portion 35a of the first switch 33 is pressed in the pressing direction, the protrusion 35c of the top plate 35 cannot sufficiently rotate the first lever 36a. Therefore, as shown in FIGS. 18 and 19 , the switch link 37 cannot be sufficiently lifted upward. In this case, as shown in FIG. 10 , the protruding portion 34a of the second switch 34 is in contact with the locking portion 37b. As a result, the movement of the second switch 34 from the standby position P1 to the drive position P2 is restricted.

When the outer peripheral portion 35a of the push button switch 32 is pressed, each portion operates and functions as described above.

As described above, according to the hand mixer of the present embodiment, the push button switch 32 has the top plate 35 which is exposed to the outside and has the outer peripheral portion 35a and the center portion 35b. And this push button switch is comprised so that the motor M may be driven when the center part 35b of the top plate 35 is pressed. On the other hand, when a part of the outer peripheral portion 35a of the top plate 35 is pressed, the motor M is not driven. According to this structure, even if the outer peripheral part 35a of the top plate 35 is in contact with the table top or the like, for example, the motor M is not driven. As a result, unexpected rotation of the blade unit 9 can be suppressed.

Further, according to the hand mixer of the present embodiment, the push button switch 32 is configured to drive the motor M when the center portion 35b of the top plate 35 is displaced by a predetermined displacement amount or more in the pressing direction. On the other hand, the top plate 35 is inclined so that when a part of the outer peripheral portion 35a of the top plate 35 is pressed in the pressing direction, the displacement of the outer peripheral portion 35a is larger than the displacement of the central portion 35b. In other words, the displacement amount of the center portion 35b is configured to be smaller than a predetermined displacement amount. According to this configuration, when a part of the outer peripheral portion 35a of the top plate 35 is pressed, the displacement amount of the center portion 35b of the top plate 35 does not exceed a predetermined displacement amount. Therefore, the locked state of the second switch 34 can be maintained, and electric power is not supplied to the electric motor M which is a drive source. As a result, since the motor M is not driven, unexpected rotation of the blade unit 9 can be suppressed.

Moreover, according to the hand mixer of this embodiment, the center part 35b of the top plate 35 is comprised so that it may dent toward the main body side rather than the part around the center part 35b. According to this configuration, the user can easily recognize the position of the center portion 35b of the top plate 35 by feeling. In addition, even when the top plate 35 comes into contact with a table or the like on which the container containing the object to be prepared is placed and the first switch 33 is pressed, the displacement of the center portion 35b can be suppressed compared with the structure in which the center portion 35b protrudes. more than the preset displacement amount.

Further, according to the hand mixer of the present embodiment, the push button switch 32 includes the first switch 33 and the second switch 34, wherein the first switch 33 has the top plate 35, and the hand mixer is configured so that only the first switch 33 and the second switch 34 are connected. When both of the second switches 34 are pressed, the motor M is driven. According to this structure, the unexpected rotation of the blade unit 9 can be suppressed more reliably.

In addition, this invention is not limited to the said embodiment, It can implement in various other technical forms.

For example, in the above-described embodiment, the push switch 32 has been described by taking the configuration in which the push switch 32 includes the first switch 33 and the second switch 34 as an example, but the present invention is not limited to this. The push button switch 32 may also be constituted by one switch. In other words, the push button switch 32 may be constituted by only the first switch 33 . In this case, for example, when the center portion 35b of the top plate 35 of the first switch 33 is pressed and the center portion 35b is displaced by a predetermined displacement amount or more, the first switch 33 directly drives the motor M. On the other hand, when a part of the outer peripheral portion 35a of the top plate 35 is pressed, the displacement amount of the first switch 33 may be restricted, and the motor M may not be driven. Thereby, the second switch, the unlock lever 36, the switch link 37, etc. can be omitted, and the structure can be simplified.

Claims (7)

1. A hand-held mixer, wherein, The hand blender includes: main body; a mixer unit, which is provided at one end of the main body and has a blade unit capable of cutting the conditioned object; a drive source that generates a rotational drive force for rotating the blade unit; and a button switch, which is provided at the other end of the main body and is used for switching the driving state of the driving source, The push button switch has a top plate that is exposed to the outside and has a center portion and an outer peripheral portion, the push button switch is configured to drive the drive source when the center portion of the top plate is pressed, and the push button switch is configured to drive the drive source at the outer peripheral portion of the top plate. The drive source does not drive when the part is pressed, This hand mixer is configured such that a part of the outer peripheral portion of the top plate constitutes a part of the outer peripheral portion of the end surface of the other end portion of the main body, and is exposed to the outside. 2. The hand blender of claim 1, wherein: The push button switch is configured to drive the drive source when the center portion of the top plate is displaced in the pressing direction by a predetermined displacement amount or more, The top plate is inclined so that when a part of the outer peripheral part of the top plate is pressed in the pressing direction, the displacement amount of the part of the outer peripheral part is larger than the displacement amount of the central part, and is configured so that The displacement amount of the center portion is smaller than the preset displacement amount. 3. The hand blender of claim 1, wherein: In this hand mixer, the end face of the other end portion of the main body of the top plate is inclined downward. 4. The hand blender of claim 1, wherein: The center part of the said top plate is comprised so that it may dent toward the said main body side rather than the part around the said center part. 5. The hand blender of claim 1, wherein: The push button switch includes a first switch and a second switch, wherein the first switch has the top plate, In this hand mixer, the drive source is driven only when both the first switch and the second switch are pressed. 6. The hand blender of claim 5, wherein: In this hand mixer, when the center portion of the top plate of the first switch is displaced by a predetermined displacement amount or more in the pressing direction, the second switch can be moved from the standby position to the driving position, When the second switch is moved to the drive position, the drive source is driven. 7. The hand blender of claim 1, wherein: The push button switch is composed of a first switch and a second switch, wherein the first switch has the top plate, In this hand mixer, the lock of the second switch is released by pushing the first switch in, so that the second switch can be pushed in, and the second switch is pushed in so that the The drive source is driven.

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