CN111590525A

CN111590525A - Ergonomic starting tool for forward and reverse rotation of air-floating button

Info

Publication number: CN111590525A
Application number: CN201910132762.XA
Authority: CN
Inventors: 许琇琳
Original assignee: Mijy Land Industrial Co ltd
Current assignee: Mijy Land Industrial Co ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2020-08-28
Anticipated expiration: 2039-02-21
Also published as: CN111590525B

Abstract

The invention provides an ergonomic starting tool for forward and reverse rotation of an air floating type button, wherein the air floating type button is mainly characterized in that an air valve and a button for controlling the air valve to switch an air flow loop are arranged in the starting tool, and an air floating design of incomplete contact with the inner wall is adopted in the air valve; therefore, when high-pressure gas enters a corresponding forward rotation air inlet path in the air valve, the starting tool is started in a forward rotation mode, when the starting tool is about to rotate in a reverse direction, the button is pushed in by pressing, the part, located in the air valve, of the button is displaced to block the forward rotation air inlet path and is converted into a reverse rotation air inlet path, the high-pressure gas can be conducted through the reverse rotation air inlet path, and the starting tool is rotated in a reverse rotation mode.

Description

Ergonomic starting tool for forward and reverse rotation of air-floating button

Technical Field

The invention relates to a starting tool, in particular to a starting tool with an air-floating type button for providing a function of quickly operating forward and reverse rotation switching.

Background

The starting tools are generally classified into a press-down type, a wrench type, an elbow wrench, a gun type, and the like. Either one of them is provided with a forward and reverse rotation switch, namely, forward rotation locking screw and reverse rotation back screw. Taking a pneumatic screwdriver as an example, when a screw is locked, the situation of bad attachment such as wrong locking, tooth sliding and lock tilting is difficult to avoid, or the requirement of screw withdrawing is needed for maintaining a product, which is generally divided into two categories of maintenance and production, and especially, a forward and reverse switch can be rapidly switched, so that the working efficiency and the productivity can be improved.

The existing positive and negative rotation switches (commonly known as gas valves) are commercially available in two types: one is rotary and the other is button type. Wherein the rotary type mainly fixes the forward rotation locking screw, and occasionally uses the reverse rotation back screw function, so the switching operation is slow; the push button type can provide quick screw withdrawing, but is mostly used for vertical downward pressing type machines.

The above-mentioned rotary or push-button type forward and backward rotation button or switch is not arranged in the middle of the pneumatic tool, mostly on the left or right, and the common use situation is that when a user holds the tool body with one hand, the user can only press the control screwdriver with thumb to rotate backward, the actual operation is that the user holds the tool with four fingers with one hand to rotate forward to start up to lock the screw, when the user wants to control the rotation backward, the user holds the tool with four fingers, and at the same time, the user quickly presses the switch with thumb to rotate backward to achieve the screw-removing effect, but the disadvantages include: the wrist tunnel is only suitable for a person who is used by the right hand, the person who is used by the left hand is difficult and inconvenient to operate, and the wrist tunnel syndrome can be caused by long-term use and is not in accordance with human factors; secondly, most of the buttons (S) or switches (air valves) are designed by using piston mechanisms, as shown in fig. 1a and 1b, the downward pressing direction of the button (S) or switch makes the internal pistons (P1, P2) form a reverse resistance effect with the flowing pressure of the air pressure, so the force when the button (S) or switch (air valve) is pressed down in operation is larger along with the larger air pressure, the resistance is larger, and the finger burden of the operator is easily caused.

Disclosure of Invention

The invention mainly aims to provide an ergonomic starting tool for forward and reverse rotation of an air-floating button, so that the ergonomic starting tool has the advantages of simple operation, easiness and labor saving in operation and use, and further has the safety effect of preventing hands of an operator from being injured.

To achieve the above object, the present invention particularly provides an ergonomic starting tool with an air-floating button for forward and backward rotation, wherein the air-floating button comprises an air valve and a button, the air valve is arranged in the starting tool and has a three-layer structure, and the air valve comprises: a first gas valve having a gas inlet for introducing externally connected high pressure gas; a second air valve, which is combined with the button and a spring, and can be pushed by the button to generate displacement, and can be reset under the action of the spring when the button is released; the third air valve is provided with at least one forward air inlet capable of enabling the motor to be started in a forward rotation mode and a reverse air inlet capable of enabling the motor to be started in a reverse rotation mode; and an air valve thimble which can be pushed by the second air valve to displace; the second air valve and the first air valve and the third air valve are kept with a certain degree of clearance and are not completely contacted to form an air floatation state. The forward rotation air inlet or the reverse rotation air inlet in the air valve is pushed to be positioned at an air ventilation position by pressing or loosening the button, so that the high-pressure air is controlled to enter the air valve thimble to move to open or close the air valve plate, and the forward rotation or reverse rotation state of the starting tool can be controlled according to requirements.

The forward rotation air inlet or the reverse rotation air inlet in the air valve is pushed to be positioned at an air ventilation position by pressing or loosening the button, so that the high-pressure air is controlled to enter the air valve thimble to move to open or close the air valve plate, and the forward rotation or reverse rotation state of the starting tool can be controlled according to requirements.

The invention has the following advantages: 1. the parallel thrust is used for the button, the high-pressure gas does not generate reverse resistance to the button, and the friction coefficient resistance is smaller due to the air floatation effect designed by the invention, so that the button can be switched into reverse rotation by only slightly pressing the button, and the phenomenon that the resistance of pressing the button is too large, the button is not easy to operate and the finger pain is generated due to the large pressure generated along with the increase of the pressure of the high-pressure gas is avoided. 2. The forward and reverse rotation switching is designed on the center line of the starting tool, five fingers hold the lower part of the starting tool when the starting tool is required to rotate forward, and the screw locking can be completed by applying force and pressing down; meanwhile, the thumb moves above the starting tool quickly, the tool is held by four fingers, and the operation of the thumb can be switched into reverse screw withdrawing. 3. The hand can be directly switched to reverse and retreat the screw without changing the position after being pressed and locked with a common tool, the forefinger can be used for controlling the button to switch to reverse and retreat the screw according to the holding habit of a user, and two fingers can be selected as means for controlling the switching to reverse. 5. When the locking screw is locked on line, if the locking screw is mistakenly locked or locked by NG, the screw can be quickly operated to be removed immediately by switching to reverse rotation, so that the working efficiency is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1a and 1b are schematic diagrams of the conventional piston type forward and reverse rotation hand press button switching.

Fig. 2 is a schematic view of the air-float button of the present invention disposed within a starting tool.

Fig. 3a and 3b are schematic diagrams of the air-float button switching mechanism of the present invention.

Fig. 4a and 4b are schematic cross-sectional views of the non-pressed structure of the air-floating button according to the present invention.

Fig. 5a and 5b are schematic cross-sectional views of the pressed structure of the air-float button of the present invention.

Description of the reference numerals

Starting tool (1) motor (2)

Clutch (3) torsion tube (4)

Connecting shaft (5) thimble (6)

Air valve plate (61) air valve (7)

First air valve (71) air inlet (711)

Second air valve (72) spring (721)

The third air valve (73) positively rotates the air inlet (731)

Reverse air inlet (732) air valve thimble (74)

And a button (8).

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Referring to fig. 2, the present invention provides an ergonomic starting tool with air-floating type button forward/backward rotation, mainly the starting tool 1 is provided with a button 8 for controlling forward/backward rotation, and the starting tool in this embodiment uses a push-down type pneumatic screwdriver as an example for detailed description; the specific structure of the starting tool 1 at least includes: a motor 2, a clutch 3, a torque tube 4, a connecting shaft 5, a thimble 6, and a pneumatic valve 7 is disposed above the motor 2 and penetrated by a button 8 with switching function, and a pneumatic valve plate 61 is disposed on the thimble 6.

The general locking operation of the starting tool 1 described above is: an operator holds the starting tool 1 with a single hand and presses downwards, so that the thimble 6 is forced to displace upwards and the gas valve plate 61 is displaced to form an open state, high-pressure gas connected externally is smoothly introduced into the starting tool 1, and the high-pressure gas enters the motor 2 through the gas valve 7 to drive the motor 2 to form a forward rotation state, thereby being beneficial to locking a screw.

As shown in fig. 2, fig. 3a and fig. 3b, the gas valve 7 designed in the present invention is a three-layer structure, further comprising: a first gas valve 71 having a gas inlet 711 for introducing externally connected high pressure gas; a second air valve 72, which is combined with the button 8 and a spring 721 respectively, and will be pushed by the button 8 to generate displacement, and will be reset by the restoring force of the spring 721 when the button 8 is released; a third air valve 73, which is provided with more than one forward air inlet 731 for promoting the forward rotation starting of the motor 2 and a reverse air inlet 732 for promoting the reverse rotation starting of the motor 2; and an air valve ejector pin 74, which is pushed by the second air valve 72 to displace and push open the air valve plate 61, forming a ventilation state; in particular: the second air valve 72 of the air valves 7 is not completely contacted with the first air valve 71 and the third air valve 73 with a certain gap left therebetween, thereby forming an air floating state.

By operating the pressing or releasing action of the button 8, the high pressure gas is pushed into the forward rotation inlet 731 or the reverse rotation inlet 732, and the displacement of the valve ejector pin 74 is controlled to open or close the valve plate 61, so as to make the starting tool reach the required forward rotation or reverse rotation state according to the requirement; the present invention designs 7 by particularly utilizing the air flotation effect, and mainly makes the friction coefficient between the second air valve 72 and the first and

third air valves

71, 73 in the air valves 7 become smaller, and the relative resistance also becomes smaller, so that the switching action of the air valve 7 can be performed by only slightly pressing the button 8 to convert the forward rotation state into the reverse rotation state, and the situation that the resistance is too large when the button 8 is operated and the finger pain is generated due to the large pressure and the large pressure will not be generated as the pressure of the high pressure gas becomes larger.

Referring to fig. 4a, 4b, 5a and 5b, the present invention relates to the actual operation of the air valve 7 and the button 8: when the starting tool 1 is held by hand to apply force downwards, the connecting shaft 5 is pressed downwards, the thimble 6 and the air valve plate 61 are pushed upwards to be opened, external high-pressure air smoothly enters the air valve 7, passes through the air inlet 711 of the first air valve 71 and then enters the forward rotation air inlet 731 of the third air valve 73 to be discharged into the motor 2, at the moment, the motor 2 is in a forward rotation state and can be used for locking screws, and when the connecting shaft 5 reaches a preset specific torque force, the air valve plate 61 is downwards brought to seal the air valve 7 under the action of the clutch 3, so that the motor 2 stops operating, and locking is completed.

On the contrary, when the reverse rotation operation of the starting tool 1 is to be performed, only the button 8 needs to be pressed and pushed easily, the second air valve 72 in the air valve 7 closes the forward rotation air inlet 731 to be changed to the ventilation position of the reverse rotation air inlet 73, and the air valve ejector pin 74 is pushed upwards together, so that the air valve plate 61 is pushed upwards to be opened, at this time, high-pressure air enters the air inlet 711 of the first air valve 71, enters the reverse rotation air inlet 732 of the third air valve 73 to be discharged into the motor 2, at this time, the motor 2 is in a reverse rotation state and can be used for screw withdrawing operation; when the button 8 is released, the second air valve 72 is pushed back by the spring 721 to return the normal rotation air inlet 731, the air valve ejector pin 74 returns to its original position, and the air valve plate 61 returns to its normal rotation functional position.

From the above, the air-floating button of the invention mainly provides an operation mode which is convenient to hold by one hand and can simultaneously and easily apply force to the button, and thereby the forward rotation and reverse rotation states of the starting tool are controlled, the effects of forward rotation locking of screws and reverse rotation unlocking of screws are achieved, the frequent requirements of various on-line operations of screw locking operation are met, and the air-floating button is quite convenient; meanwhile, the operation is very easy and labor-saving, and the electric toothbrush can be normally used without any trouble for users who are either right-handed or left-handed; in addition, the injury to the hands of the user can be effectively reduced, so that the invention is an excellent invention which is convenient to use, safe and practical.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. An air-floating button positive and negative rotation ergonomic starting tool is characterized in that the air-floating button comprises an air valve and a button which are arranged in the starting tool, the air valve is of a three-layer structure and comprises: a first gas valve having a gas inlet for introducing externally connected high pressure gas; the second air valve is combined with the button and a spring, can be pressed by an external force to generate displacement, and is reset under the action of the spring when the external force disappears; the third air valve is provided with at least one forward air inlet capable of enabling the motor to be started in a forward rotation mode and a reverse air inlet capable of enabling the motor to be started in a reverse rotation mode; the second air valve and the first air valve and the third air valve are kept with a certain degree of clearance and are not completely contacted to form an air floatation state.

2. The ergonomic starting tool of claim 1 wherein said air valve further comprises an air valve plunger that is displaced by said second air valve.