CN2892258Y

CN2892258Y - Mixer

Info

Publication number: CN2892258Y
Application number: CN200620072122.2U
Authority: CN
Inventors: 吴书明
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2006-04-05
Filing date: 2006-04-05
Publication date: 2007-04-25
Anticipated expiration: 2016-04-05

Abstract

The agitator comprises an internal motor housing, an adjustable motor driven agitation head with a working position and an off-position and is switched between the two positions, a lifting gear, a main switch to control motor power, a safety switch device comprising a safety switch and a trigger gear that turns on or off the safety switch by moving between a first position and a second position. The safety switch and the main switch are electrically connected. When the agitation head lies at the working position, the trigger gear lies at the first position. The main switch and motor are electrically connected. When agitation head lies at the off-position, the trigger gear lies at the second position and the main switch is electrically disconnected with the motor. The agitator has eliminated the defect in prior art that agitation heads may probably injure users accidentally and improves safety of agitators.

Description

Mixer

Technical field

The utility model relates to a kind of mixer, particularly has the mixer of safety switching apparatus.

Background technology

Mixer comprises the casing of built-in motor usually, by motor-driven stirring-head and agitator etc., when normal use, stirring-head is stretched in the agitator, press the shift knob on the lower casing this moment, electrical power in the casing, can drive stirring-head and rotate in agitator, the material that needs such as mortar are stirred stirs, mixes well.During normal the use, stirring-head is positioned at agitator, therefore the phenomenon that stirring-head is accidentally injured the user can not appear, but because the shift knob of existing mixer generally is positioned at the casing top, if use misoperation like this, can take place just to press shift knob when stirring-head does not stretch in the agitator, the situation that makes the stirring-head rotation, serious potential safety hazard will appear in this moment.

The utility model content

The purpose of this utility model is to disclose a kind of mixer with safety switching apparatus.

To achieve these goals, the mixer that the utility model disclosed, the housing that comprises a built-in motor, one by motor-driven stirring-head, stirring-head has an operating position and an off-position, a lowering or hoisting gear, can regulate stirring-head changes between operating position and off-position, the main switch of a control motor power break-make, also comprise a safety switching apparatus, it comprises a safety switch and one and can move between the primary importance and the second place and open or the flip flop equipment of closed safe switch, and safety switch is electrically connected with main switch, when stirring-head is positioned at the operating position, flip flop equipment is positioned at primary importance, and main switch is electrically connected with motor, when stirring-head is in off-position, flip flop equipment is in the second place, the disconnection that is electrically connected of main switch and motor.

When by lowering or hoisting gear stirring-head being transferred to the operating position, flip flop equipment triggers safety switch, and press main switch this moment, and motor is activated, and drives stirring-head and rotates in agitator; When stirring-head is in off working state, the disconnection that is electrically connected of main switch and motor, even maloperation this moment starts main switch, stirring-head does not rotate yet.Therefore, have only when stirring-head to transfer to the operating position, when promptly stretching in the agitator fully, main switch is just connected power supply, has improved the security of mixer.

Description of drawings

Come the various specific embodiment described in the utility model are described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of overall schematic of mixer;

Fig. 2 is the amplification partial sectional view that mixer safety switching apparatus that the utility model discloses is in non-triggering state;

Fig. 3 is the amplification partial sectional view that the mixer safety switching apparatus is in the triggering state among Fig. 2.

The specific embodiment

As shown in Figure 1, mixer 100 comprises the housing 1 of a built-in motor (not shown on the figure) usually, one by motor-driven stirring-head 2, an agitator 3, it is positioned on the support 9, when mixer 100 is in normal operating conditions, stirring-head 2 stretches in the agitator 3, and portion's rotation within it, the material that needs such as mortar are stirred stirs, mix well, mixer 100 also comprises a lowering or hoisting gear 4, and it can regulate the conversion of stirring-head 2 between operating position and off-position, and a main switch 5 that is positioned on the housing 1, be used to control the on/off of motor.Mixer 100 also comprises a safety switching apparatus 6, its with main switch 5 and motor three between be electrically connected, and annexation is to be connected in series.

Embodiment as shown in Figure 2, safety switching apparatus 6 comprises safety switch 7 and flip flop equipment 10.Safety switch 7 is comprising a contact 8 to outer lug near on the side of flip flop equipment 10, and it can inwardly compress and enter in the safety switch 7, makes main switch work; Flip flop equipment 10 comprises a long and narrow frizzen 11, it can move down in vertical direction, the lower end of frizzen 11 is connected pivotly with an end of a connecting rod 12, the middle part of connecting rod 12 is by a bearing pin 18 rotating being installed on the mixer 100, the top of frizzen 11, comprise an inclined-plane 16 in a side near safety switch 7, the top of frizzen 11, deviating from quarter butt 13 with comprising a horizontal expansion on the side of safety switch 7, a spring assembly 14 is fixedly mounted in the housing 1, following and the spring assembly 14 of quarter butt 13 is connected, a positioner 15 is fixedly mounted on the lowering or hoisting gear 4, it is positioned at the extreme lower position of lowering or hoisting gear 4, and promptly mixer 100 is in the height of normal operating conditions.The non-triggering state of safety switching apparatus 6 as shown in Figure 2, when not needing mixer 100 work, by lowering or hoisting gear 4, housing 1 is transferred to off-position together with stirring-head 2, stirring-head 2 is positioned at the top of agitator 3, this moment, safety switching apparatus 6 also rose in company with housing 1, promptly with lowering or hoisting gear 4 on positioner 15 disengage, flip flop equipment 10 also disengages with safety switch 7, frizzen 11 is moved upwards up to the second place, spring assembly 14 is in relaxation state, frizzen 11 does not contact with contact 8 on the safety switch 7, and contact 8 is positioned at safety switch 7 outsides, and safety switch 7 disconnects, main switch is inoperative, even maloperation takes place like this, press main switch 5, mixer 100 is not worked, stirring-head 2 does not rotate, and user's situation promptly can not occur injuring because of maloperation.

Safety switching apparatus 6 is in the triggering state as shown in Figure 3, when needs mixer 100 operate as normal, by lowering or hoisting gear 4, housing 1 is transferred to the operating position together with stirring-head 2, stirring-head 2 stretches in the agitator 3 fully, one end of connecting rod 12 contacts with positioner 15 and is subjected to positioner 15 it is upwarded pressure, make connecting rod 12 rotate around its bearing pin 18, the other end of connecting rod 12 rotates, and drive connected frizzen 11 and move to primary importance vertically downward, quarter butt 13 on the frizzen 11 overcomes the downward compression spring device 14 of spring force, contact 8 is pressed on the inclined-plane of frizzen 11 like this, make contact 8 on inclined-plane 16, slip over, and the bar 11 that finally is triggered is pressed in the safety switch 7, to connect safety switch 7, main switch 5 works, press main switch 5 this moment, and motor-driven stirring-head 2 rotates in agitator 3, and the material that needs such as mortar are stirred stirs, mix well.

The mixer safety switching apparatus that the utility model disclosed is not limited to frame mode mentioned above and shown in the drawings; for example to the number and the position of safety switch upper contact; the shape of frizzen; and the change that the relative position between frizzen and the safety switch is made does not exceed scope of the present utility model; on this basis; in the utility model scope required for protection, concrete shape of other members and position are changed; if this change is conspicuous for the those of ordinary skill of the industry, so such change will be subjected to the utility model protection.

Claims

1. mixer, the housing that comprises a built-in motor, one by motor-driven stirring-head, stirring-head has an operating position and an off-position, a lowering or hoisting gear, can regulate stirring-head changes between operating position and off-position, the main switch of a control motor power break-make, it is characterized in that: also comprise a safety switching apparatus, it comprises a safety switch and one and can move between the primary importance and the second place and open or the flip flop equipment of closed safe switch, safety switch is electrically connected with main switch, and when stirring-head was positioned at the operating position, flip flop equipment was positioned at primary importance, main switch is electrically connected with motor, when stirring-head was in off-position, flip flop equipment was in the second place, the disconnection that is electrically connected of main switch and motor.

2, mixer as claimed in claim 1 is characterized in that: safety switch, main switch and motor three realize being electrically connected, and annexation is to be connected in series.

3. mixer as claimed in claim 1 or 2, it is characterized in that: the positioner that also comprises a fixed-site, flip flop equipment comprises a frizzen, when stirring-head is positioned at the operating position, positioner contact and compressing frizzen, frizzen starts safety switch, when stirring-head is in off-position, frizzen does not contact with positioner, and safety switch disconnects.