CN200943194Y

CN200943194Y - Air blower

Info

Publication number: CN200943194Y
Application number: CN 200620069723
Authority: CN
Inventors: 陈亚生
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2006-03-01
Filing date: 2006-03-01
Publication date: 2007-09-05
Anticipated expiration: 2016-03-01

Abstract

The utility model relates to a wind-blower, which comprises an electric engine, a main switch, a control circuit, a safe switching group, a set of fans motivated by the electric engine and an inter-changeable shield cover and a dust collecting pipe. Wherein, the electric engine is started up by the main switch and the safe switching group and the main switch is connected through the control circuit. The shield cover and the dust collecting pipe separately contain a protruding block for trigger the safe switching group. Wherein, the safe switching group is composed of a safe switch and a non-plastic triggering component. The safe switch is triggered by the non-plastic trigger-element, which greatly prolongs the service life and promotes the safety factors compared with the triggering of the elastic-elements in the current art.

Description

Hair-dryer

Technical field

The utility model relates to a kind of hair-dryer, relates in particular to a kind of machine that is used for collecting the rubbish fragment of garden.

Background technology

In the prior art, hair-dryer has a vacuum cleaning pattern and that absorbs the rubbish fragment usually rubbish is blown out the blowing pattern of heap.When hair-dryer was in the blowing pattern, motor-driven fan rotated at a high speed, suck air and it is discharged from air outlet from air intake, thereby blow to by blower can be with rubbish fragments such as leaves from blowing to a fixing place on the ground for the air of discharge.Because the fan of exposed high speed rotation hurts the operator probably, need install a guard shield to prevent operating personnel and touch fan because of carelessness or their clothes is involved in the fan at the air intake place of fan.When hair-dryer is in the vacuum cleaning pattern, at the air intake place one sweep-up pipe is installed and is replaced guard shield, at the air outlet place one refuse bag is installed and is replaced blower, sweep-up pipe sucks air and rubbish and rubbish is entered in the refuse bag, and the sweep-up pipe at air intake place can prevent effectively that operating personnel from touching the fan of rotation at a high speed because of carelessness.

Such hair-dryer has a safety device usually guaranteeing to have only when guard shield or sweep-up pipe are equipped with in the air intake place of fan, and motor just can be activated the drive fan running, otherwise motor can not be activated, and fan does not rotate.This safety device can prevent that operating personnel from coming to harm because of touching the fan that runs up, and prevents also that some materials are involved in the fan and the infringement hair-dryer.A kind of safety device commonly used at present is guard shield or the sweep-up pipe top pressure spring by the air intake place, and spring and then triggering or closed safe switch are opened realization.Yet such safety device has a shortcoming, and along with safety switch is stirred increasing of number of times, spring will follow the string, so trigger malfunctioning.If the unexpected motor switch that touches will cause removing guard shield or the sweep-up pipe aft-fan still runs up from wind inlet of fan, thereby initiation potential.

The utility model content

The purpose of this utility model provides a kind of hair-dryer with safety switching apparatus of improved, and safety switching apparatus can long-term operate as normal.

In order to achieve this end, the utility model provides a kind of hair-dryer, comprise: a main switch, a motor that triggers by main switch, one by motor-driven fan, an air intake, an air outlet, a dismountable member that links to each other with air intake, a control circuit, a safety switch group, described safety switch group is positioned near the air intake, and realize that by control circuit circuit is connected with main switch, main switch is subjected to the restriction of safety switch group to the trigger action of motor, the described dismountable member that links to each other with air intake comprises an actuating device, described safety switch group is made up of a safety switch and a stiff triggering element, in the disassembly process of described dismountable member and air intake, actuating device is stirred the triggering element, and then triggers safety switch.

In the utility model, the safety switch of hair-dryer is triggered by a stiff triggering element, triggers with flexible member of the prior art and compares, and has greatly improved application life and safety factor.

Description of drawings

Fig. 1 is the partial sectional view of the hair-dryer of a kind of first-selected embodiment of the present utility model.

Fig. 2 a is the working state schematic representation that the safety switch of hair-dryer among Fig. 1 will be triggered.

Fig. 2 b is the working state schematic representation after the safety switch of hair-dryer is triggered among Fig. 1.

Fig. 2 c is the working state schematic representation that the safety switch of hair-dryer among Fig. 1 will be reversed triggering.

Fig. 2 d is that the safety switch of hair-dryer is reversed working state schematic representation after the triggering among Fig. 1.

The specific embodiment

As shown in Figure 1, the hair-dryer 10 of this specific embodiment comprises 16, one air outlets 17 of 30, one air intakes of 20, one sweep-up pipes of 14, one protective covers of 13, one fans of 40, one motors of 12, one safety switch groups of 11, one control circuits of a main switch.Wherein, safety switch group 40 comprises a safety switch 41 and a pivotable triggering element 42.Main switch 11 and safety switch 41 realize that by control circuit 12 circuit connects by lead 15, and link to each other with motor 13.12 pairs of main switches 11 of control circuit, safety switch 41 and motor 13 realize that circuit connect and control, make it the function that reaches such: have only when main switch 11 and safety switch 41 all are in on-state, thereby motor 13 just can be activated drive fan 14 runnings; Otherwise if safety switch 41 is cut off, then whether the break-make of main switch 11 does not produce effect to the startup of motor 13.Control circuit 12 with function like this is a kind of prior aries commonly used, and this manual is not described in detail this.

Protective cover 20 and sweep-up pipe 30 optionally are installed on air intake 16 places of fan 14 belows.When needs are dried when operation, protective cover 20 is installed on air intake 16 places of fan 14 belows, air is inhaled into hair-dryer 10 from air intake 16, blows out from air outlet 17, thereby realizes blowing function; When needs hair-dryer 10 carries out dust suction, protective cover 20 is taken off, and sweep-up pipe 30 is installed on air intake 16 places of fan 14 belows, gas and rubbish are inhaled into hair-dryer 10 by sweep-up pipe 30, and are discharged into (not shown) in the collecting bag from air outlet 17.

When protective cover 20 or sweep-up pipe 30 were installed on air intake 16 places of hair-dryer 10 fans 14 belows, safety switch 41 was triggered and is in on-state, and this moment, main switch 11 worked, and stirred the running that main switch 11 can be controlled motor 13; When protective cover 20 or sweep-up pipe 30 when the air intake 16 of hair-dryer 10 fans 14 belows screws out, safety switch 41 is reversed to trigger and is in closed condition, this moment, motor 13 was not subjected to the control of main switch 11.Concrete operating principle is shown in Fig. 2 a-2d.Wherein, there are two

projecting blocks

51,52 at the edge of protective cover 20 or sweep-up pipe 30, and safety switch group 40 triggers element 42 by a safety switch 41 and to be formed, and triggers element 42 and comprises a triggering driving lever 43 and a pivot 44, and triggering driving lever 43 can pivot around this pivot 44.

Shown in Fig. 2 a, to air intake 16 places, correspondingly, projecting block 51 promotes to trigger driving levers 43 rotations with the direction of arrow A rotation protective cover 20 or sweep-up pipe 30, triggers driving lever 43 and begins to trigger safety switch 41 around pivot 44 with the direction rotation of arrow C.Be protective cover 20 or sweep-up pipe 30 shown in Fig. 2 b by behind the precession air intake 16 fully, safety switch 41 is triggered and is in figure under the on-state, and at this moment, the main switch 11 of hair-dryer 10 works.Among Fig. 2 c, protective cover 20 or sweep-up pipe 30 begin to screw out air intake 16 with the direction of arrow B, and correspondingly, projecting block 52 promotes to trigger driving lever 43 and rotates, and trigger driving lever 43 around direction rotation beginning reverse the trigger safety switch 43 of pivot 44 with arrow D.Be after protective cover 20 or sweep-up pipe 30 are screwed out air intake 16 fully shown in Fig. 2 d, safety switch 41 is reversed and triggers the figure that is under the off-state, and at this moment, the main switch 11 of hair-dryer 10 is inoperative.

Triggering element mentioned above and pivoted shown in the drawings is a kind of specific embodiment of the present utility model, and triggering element can also be other stiff forms.For example, can be slide block type, projecting

block

51,52 can promote slide block type when rotating with protective cover 20 or sweep-up pipe 30 and trigger element, and then triggers safety switch 41; In addition, triggering element can also be other non-resilient forms such as rotary type, tumbling-type.

In sum, the mechanism of the realization safety locking that the utility model disclosed has solved the spring trigger mechanism well can cause triggering malfunctioning shortcoming because of following the string, and implements simple and convenient.When protective cover 20 or sweep-up pipe 30 are threaded into air intake 16, safety switch 41 is triggered automatically and is in on-state, when protective cover 20 or sweep-up pipe 30 screwed out air intakes 16, safety switch 41 was reversed automatically to trigger and is in off-state, thus the safety when having guaranteed the operation hair-dryer.

The specific embodiment described above is just set forth design of the present utility model and principle, does not really want content of the present utility model is limited.Those of ordinary skill in the art can recognize, except the specific embodiment of above-mentioned first-selection, the utility model also has a lot of other embodiments that substitute or that revise, and these embodiments alternative or that revise are still within scope of the present utility model.Protection domain of the present utility model is determined by claim.

Claims

1. hair-dryer, comprise: a main switch, a motor that triggers by main switch, one by motor-driven fan, an air intake, an air outlet, a dismountable member that links to each other with air intake, a control circuit, a safety switch group, described safety switch group is positioned near the air intake, and realize that by control circuit circuit is connected with main switch, described safety switch group has the primary importance and the second place, on the primary importance of described safety switch group, described main switch is electrically connected with described motor, on the second place of described safety switch group, the disconnection that is electrically connected of described main switch and described motor, the described dismountable member that links to each other with air intake comprises an actuating device, it is characterized in that: described safety switch group is made up of a safety switch and a stiff triggering element, actuating device and the position relation that triggers between the element are, the part of described actuating device can contact with described triggering element, and described triggering element can contact with described safety switch.

2. hair-dryer as claimed in claim 1 is characterized in that: the described dismountable member that links to each other with air intake is protective cover or sweep-up pipe.

3. hair-dryer as claimed in claim 1 is characterized in that: described triggering element comprises a pivot and at least one shifting part that can pivot.

4. hair-dryer as claimed in claim 1 is characterized in that: described actuating device is a projecting block, be positioned on dismountable member, and near the position that is connected with air intake.