阅读说明：本技术 一种吹吸风机 (Air blowing and sucking machine ) 是由 彭国华 柯亨钊 于 2020-04-14 设计创作，主要内容包括：本发明公开了一种吹吸风机,属于吹吸风机技术领域,它解决了现有吹吸风机安全性不高以及操作不便的问题。本吹吸风机包括外壳、附件、风扇以及联锁机构,通过设置微动开关与启动开关串联,当没有安装格栅或吸风管的时候,无法启动微动开关,提高了吹吸风机的安全性能,且两个微动开关并联设置,可防止当某个微动开关损坏时整体无法运行,同时将格栅一端可转动连接在外壳上,在拆卸格栅时,将其旋转180°即可,并可以防止格栅的丢失,同时设置联锁机构锁定格栅或吸风管,又在外壳上侧设置有释放按钮,通过该释放按钮平动可以带动可移动凸轮从锁定位置运动到非锁定位置,更符合操作者对释放按钮的操作习惯。(The invention discloses a blowing and sucking machine, belongs to the technical field of blowing and sucking machines, and solves the problems of low safety and inconvenient operation of the existing blowing and sucking machine. This blowing and suction fan includes the shell, the annex, fan and interlocking device, establish ties with the starting switch through setting up micro-gap switch, when not installing grid or aspiration channel, can't start micro-gap switch, the security performance of blowing and suction fan has been improved, and two micro-gap switches set up in parallel, can prevent whole unable operation when certain micro-gap switch damages, simultaneously with grid one end rotatable coupling on the shell, when dismantling the grid, with its rotatory 180 can, and can prevent losing of grid, set up interlocking device locking grid or aspiration channel simultaneously, be provided with the release button again on the shell upside, can drive portable cam and move to non-latched position from the latched position through this release button translation, more accord with the operator to the operation habit of release button.)

1. A blowing and suction fan, comprising:

the motor control device comprises a shell, wherein a motor and a first switch are arranged in the shell, and the first switch controls the motor to be started;

a fan disposed within the housing, the fan being driven by the motor;

an accessory releasably attached to the housing, the accessory covering the fan, the accessory having an activation tab disposed thereon for activating the first switch;

an interlock mechanism for connecting the accessory to the housing, the interlock mechanism including a movable cam that moves between a locked position and an unlocked position to lock or unlock the accessory;

the release button is arranged on the shell, and the translational motion of the release button drives the movable cam to rotate so as to control the movable cam to move from the locking position to the unlocking position.

2. The suction and blowing fan as claimed in claim 1, wherein the attachment is a grill or a suction duct, and the suction duct is further provided with an engageable lug.

3. The suction and blowing fan of claim 2 wherein the housing is provided with receiving slots that receive the activation tabs and the engageable lugs.

4. The suction and blowing fan of claim 3, wherein one end of the grill is rotatably connected to the housing and the other end of the grill is engageable in the receiving slot by the actuating protrusion.

5. The suction blower of claim 1, further comprising an activation switch disposed outside the housing, the activation switch being in series with the first switch.

6. The suction blower of claim 1, wherein the movable cam is provided with a first limit spring, and the movable cam is biased to the locked position by the first limit spring.

7. The suction blower of claim 3 wherein the movable cam has an inclined cam surface disposed thereon, the inclined cam surface being disposed above the receiving slot when the movable cam is in the locked position.

8. The blowing and suction fan of claim 1, wherein a pressing strip is disposed under the release button, an arc-shaped protrusion is disposed on one side of the movable cam, one end of the pressing strip is connected to the bottom of the release button, and the other end of the pressing strip is abutted to the inclined edge of the arc-shaped protrusion.

9. The blowing and suction fan according to claim 1 or 5, wherein the first switch is provided as a micro switch, the micro switches are provided in two, and the two micro switches are provided in parallel.

10. The suction and blowing fan of claim 9, further comprising a pivot activation element having ends abutting the two microswitches when the activation tab is engaged by the pivot activation element.

Technical Field

The invention relates to the technical field of air blowing and sucking machines, in particular to an air blowing and sucking machine.

Background

Chinese patent 201310054256.6 discloses a blower vacuum device that protects an electrical switch from interference and prevents an object from activating the switch when no accessories are mounted on the blower vacuum housing by providing a shutter on a movable cam that moves it between a blocking position and a non-blocking position. In addition, the barrier not only provides a physical barrier against accidental actuation of the switch, but also prevents a user from being able to view the switch or the mechanism for actuating the switch. This may prevent the user from knowing the switch and avoid deliberately actuating the switch. Thus, the blower vacuum fan cannot be operated when a user or other object is nearby. And an accessory release button is also integrally arranged on the movable cam, and the grille or the vacuum tube is released through the accessory release button.

This means that the operator must release the accessory by rotating the release button, which needs to be located on the side of the movable cam, which is inconvenient and not in accordance with the existing operating habits, and needs to operate with both hands simultaneously to release the accessory, and when the accessory is mounted, the movable cam must be pressed by the engageable lug away from the blocking position to insert the actuating protrusion into the receiving slot, and it is not easy to grasp to properly insert the actuating protrusion into the receiving slot, and if it is too early, the actuating protrusion is blocked by the blocking plate and cannot be inserted, and if it is too late, the movable cam surface will return to the original position without being pressed by the engageable lug, and it cannot be inserted, and after the grill is removed, it is easily lost due to its small size.

Disclosure of Invention

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a blower/suction fan which is convenient to operate, in which a grill is not easily lost, and which conforms to the operation habit.

In order to achieve the above object, the present invention provides a blowing and suction fan, comprising:

the motor control device comprises a shell, wherein a motor and a first switch are arranged in the shell, and the first switch controls the motor to be started;

a fan disposed within the housing, the fan being driven by the motor;

an accessory releasably attached to the housing, the accessory covering the fan, the accessory having an activation tab disposed thereon for activating the first switch;

an interlock mechanism for connecting the accessory to the housing, the interlock mechanism including a movable cam that moves between a locked position and an unlocked position to lock or unlock the accessory;

the release button is arranged on the shell, and the translational motion of the release button drives the movable cam to rotate so as to control the movable cam to move from the locking position to the unlocking position.

According to the blowing and sucking fan, the accessory is a grating or an air suction pipe, and the air suction pipe is also provided with a lug capable of being jointed.

In a blower/suction fan according to the above, the housing is provided with receiving slots for receiving the actuating projections and the engageable lugs.

According to the blowing and sucking fan, one end of the grating can be rotatably connected to the shell, and the other end of the grating can be clamped in the receiving slot through the starting protrusion.

According to the blowing and suction fan, the blowing and suction fan further comprises a starting switch, the starting switch is arranged on the outer side of the shell, and the starting switch is connected with the first switch in series.

According to the blowing and suction fan, the movable cam is provided with the first limiting spring, and the movable cam is biased to the locking position through the first limiting spring.

In accordance with the above-described air suction blower, the movable cam is provided with an inclined cam surface, and the inclined cam surface is disposed above the receiving slot when the movable cam is in the locked position.

According to the air blowing and sucking machine, be provided with the extrusion strip under the release button, portable cam one side is provided with the arc bulge, extrusion strip one end with the release button bottom meets, the other end with arc bulge slope limit butt.

According to the blowing and suction fan, the first switch is set to be the micro switch, the micro switches are set to be two, and the two micro switches are connected in parallel.

The blowing and sucking fan further comprises a pivoting starting element, and when the starting protrusion is connected with the pivoting starting element, two ends of the pivoting starting element are adjacent to the two micro switches.

The invention has the following beneficial effects:

1. the start protrusion can be directly pressed on the inclined cam surface to be inserted into the receiving slot, so that the micro switch is started, and the operation is convenient.

2. The translation of the release button can push the movable cam to move from the locking position to the unlocking position, so that the operation habit of the public is better met, and the operation is more convenient.

3. One end of the grating can be rotatably connected to the shell, and the grating can be rotated by 180 degrees when the air suction pipe is installed at the air inlet, so that the grating can be prevented from being lost.

4. The two micro switches are arranged in parallel, when one micro switch is damaged, the other micro switch can also play a role in serially connecting the starting switches, and the condition that one micro switch cannot work due to damage can be avoided.

Drawings

FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a grid structure according to a first embodiment of the present invention;

FIG. 3 is an exploded view of the interlock mechanism of the present invention;

FIG. 4 is a schematic view of the release button of the present invention;

FIG. 5 is a schematic diagram of the microswitch operation of the present invention;

FIG. 6 is a schematic view of the overall structure of a second embodiment of the present invention;

FIG. 7 is a schematic view of a draft tube structure according to a second embodiment of the present invention;

in the figure: 100. a housing; 110. a microswitch; 120. an air inlet; 130. an air outlet; 140. a receiving slot; 150. a circular flange; 160. a blowpipe; 170. a collection bag; 180. a handle; 200. a fan; 300. a grid; 310. a start-up tab; 320. an air inlet; 330. a rotating shaft; 331. a return spring; 400. an interlock mechanism; 410. a movable cam; 411. an arc-shaped protrusion; 412. a cam surface; 413. a second slot; 414. a first limit spring; 420. a cover; 421. a first through hole; 422. a second through hole; 423. an annular groove; 500. a release button; 510. extruding the strip; 600. starting a switch; 700. a pivot activation element; 710. starting the spring; 800. an air suction pipe; 810. a start-up tab; 820. the lugs may be engaged.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.