CN103268833B

CN103268833B - Electric switch

Info

Publication number: CN103268833B
Application number: CN201310115632.8A
Authority: CN
Inventors: 陆亚洲; 苏康
Original assignee: Zhangjiagang Huajie Electronics Co Ltd
Current assignee: Zhangjiagang Huajie Electronics Co Ltd
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2015-05-27
Anticipated expiration: 2033-04-03
Also published as: CN103268833A

Abstract

The invention discloses an electric switch which is flexible and normal to turn on and off. The electric switch comprises a substrate, a fixed contact which is arranged in the substrate, an upper shell which is matched with the substrate and a button which is arranged on the outer side of the upper shell and hinged with the upper shell, wherein the button is hinged with the upper shell, the button is connected with the upper shell through a main spring, a pushing rod is arranged in the upper shell in a sliding way, an auxiliary spring is arranged between the pushing rod and the inner wall of the upper shell, one end of the button penetrates through the upper shell to be hinged with one end of the pushing rod, a sliding block is arranged between the pushing rod and the substrate, the sliding block is provided with a movable contact which is matched with the fixed contact, the inner wall of the upper shell is fixedly provided with an omega-shaped leaf spring, the leaf spring is arranged between the pushing rod and the sliding block, the side surface, which is arranged on the leaf spring, of the sliding block is provided with a projection which is matched with a bending position on two ends of the leaf spring, and the sliding block is fixed on the pushing rod. The electric switch has the advantages that by utilizing the clamping force of the leaf spring, the pushing rod can be rapidly under an opening or closing state, so that the action is rapid.

Description

Motor switch

Technical field

The present invention relates to a kind of motor switch.

Background technology

Existing motor switch, comprise rotation actuator button, the pull bar be connected with button, spring between cylinder lever connecting rod and driven member slide block, driven member slide block, what actuator slide block drove dynamic touches assembly, to collide the stationary contact assembly connected with the dynamic assembly that touches, and the upper casing of the fixing above-mentioned spare part of assembling, pedestal and make the spring of rotation actuator push-button reset and other.

Mechanical motion principle: when firmly pressing rotation actuator button, button drives pull bar rectilinear motion by the fulcrum rotation fixing with shell, spring between cylinder lever connecting rod and driven member slide block is pulled and is compressed, when Compress Spring is pulled to the line exceeding pull bar and slider support spring, Compress Spring is the upset of band movable slider just, the dynamic assembly that touches be connected with slide block is collided with the tactile assembly be fixed on pedestal, realizes switch and communicate.

When pressing the power be pressed on rotation actuator button and disappearing, under the effect of rotation actuator push-button reset spring, push-button reset, drive pull bar to make straight line to reset, the spring between cylinder lever connecting rod and driven member slide block is driven to be pulled and to be compressed, when Compress Spring is pulled to the line exceeding pull bar and slider support spring, Compress Spring is the upset of band movable slider just, thus the dynamic assembly that touches be connected with slide block is resetted, the dynamic assembly that touches be connected with slide block separates with the stationary contact assembly be fixed on pedestal, realizes switch and breaks mutually.

The switch of said structure can produce following problem in use: when reality uses, spring between cylinder lever connecting rod and driven member slide block, when being pulled compression upset, often because the distortion force value dispersion of spring cannot realize upset, cause driving slide block to overturn, thus the dynamic assembly that touches be connected with slide block cannot be collided or disconnect with the tactile assembly be fixed on pedestal, thus affect the on-off function of switch.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of break-make flexible, normal motor switch.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of motor switch, comprise pedestal, be arranged on the fixed contact in pedestal, the upper casing matched with pedestal and be arranged on button outside upper casing and hinged with upper casing, button is hinged with upper casing and be connected by main spring between the two, slide in described upper casing and be provided with push rod, auxiliary spring is provided with between push rod and upper casing inwall, one end of button is through hinged with one end of push rod after upper casing, slide block is provided with between push rod and pedestal, slide block is provided with the moving contact matched with fixed contact, upper casing inwall is fixed with the shell fragment of Ω shape, shell fragment is between push rod and slide block, that side that slide block is positioned at shell fragment is provided with the projection matched with shell fragment two ends bending part, slide block is fixed on push rod.

Described button is provided with pin-and-hole, upper casing is provided with the bearing pin matched with pin-and-hole by spring, upper casing is stretched out in one end of bearing pin, and when extreme position pressed by button, the other end of bearing pin can stretch in the pin-and-hole of button.

Described fixed contact and moving contact are four, and pedestal internal fixtion has four conductors, and fixed contact is separately fixed on conductor; Slide block is provided with two sheet metals, every two moving contacts are fixed on a sheet metal.

Described push rod is arranged with sealing ring, and sealing ring is fixed between upper casing and pedestal.

Pin-and-hole on described button is the mounting hole with radian, and the aperture of mounting hole is greater than the diameter of bearing pin.

The invention has the beneficial effects as follows: the clamping force utilizing shell fragment, make push rod can be in the state opened or closed fast, be swift in motion, fast.

Accompanying drawing explanation

Fig. 1 is the outside drawing of motor switch of the present invention;

Fig. 2 is the exploded view of Fig. 1;

Partial sectional view when Fig. 3 is non-button press in Fig. 1;

Fig. 4 is structure chart when projection is positioned in the middle of two shell fragment legs in Fig. 3;

Fig. 5 is structure chart when projection is positioned on the right side of two shell fragment legs in Fig. 1.

In figure: 1, pedestal, 2, conductor, 3, fixed contact, 4, upper casing, 5, button, 6, main spring, 7, push rod, 8, slide block, 9, sheet metal, 10, moving contact, 11, little spring, 12, shell fragment, 13, shell fragment leg, 14, auxiliary spring, 15, projection, 16, pin-and-hole, 17, spring, 18, bearing pin, 19, sealing ring.

Embodiment

Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail.

As Fig. 1, shown in Fig. 2, motor switch of the present invention, comprise pedestal 1, be arranged on four conductors 2 in pedestal 1, each conductor 2 is respectively arranged with fixed contact 3, pedestal 1 is provided with the upper casing 4 be mated, the arranged outside of upper casing 4 has button 5, button 5 is hinged with upper casing 4, be connected by main spring 6 between button 5 with upper casing 4, slide in described upper casing 4 and be provided with push rod 7, because in motor switch, the elastic force of main spring 6 is not too large, need other secondary spring to ensure the reset of button 5, therefore between push rod 7 and upper casing 4 inwall, auxiliary spring 14 is provided with, be used for improving the reset capability of button 5.One end of button 5 is hinged through after upper casing 4 and one end of push rod 7, slide block 8 is provided with between push rod 7 and pedestal 1, slide block 8 is provided with two sheet metals 9, sheet metal 9 is respectively arranged with two moving contacts 10, moving contact 10 is fixed on sheet metal 9 by little spring 11, four moving contacts 10 altogether, after slide block 8 slides, moving contact 10 can contact with corresponding fixed contact 3.Upper casing 4 inwall is fixed with the shell fragment 12 of Ω shape, the bending part at the two ends of shell fragment 12 is shell fragment leg 13, shell fragment 12 is between push rod 7 and slide block 8, that side that slide block 8 is positioned at shell fragment 12 is provided with the projection 15 matched with shell fragment leg 13---shown in Fig. 3, Fig. 4, Fig. 5, slide block 8 is fixed on push rod 7.In order to ensure button 5 depress to extreme position after and to remain on extreme position motionless, thus provide convenience for operator, button 5 need not be pinned always, locate by button 5, described button 5 is provided with pin-and-hole 16, upper casing 4 is provided with the bearing pin 18 matched with pin-and-hole 16 by spring 17, upper casing 4 is stretched out in one end of bearing pin 18, when extreme position pressed by button 5, the other end of bearing pin 18 can stretch in the pin-and-hole 16 of button 5.Then operator can unclamp hand, and button 5 resets under the effect of main spring 6 and auxiliary spring 14, but snaps in pin-and-hole 16 due to bearing pin 18, and button 5 cannot be resetted, thus ensures that button 5 is in press and be pressed in extreme position state.When actual production, for the ease of the cooperation of bearing pin 18 and pin-and-hole 16, the pin-and-hole 16 on button 5 is for having the mounting hole of radian, and the aperture of mounting hole is greater than the diameter of bearing pin 18.In order to anti-throw-out lever 7 dust in the process of movement enters in motor switch, sheathed sealing ring 19 on described push rod 7, sealing ring 19 is fixed between upper casing 4 and pedestal 1.

The course of work of electric tool switch of the present invention is: as shown in Figure 3, and when electric tool switch does not work, the projection 15 on slide block 8 is positioned at the left side of shell fragment leg 13 on shell fragment 12.As shown in Figure 2, when button 5 left end is downward on time, button 5 rotates counterclockwise around the hinged place of itself and upper casing 4, the right-hand member of button 5 just pulls push rod 7 to move right, and because slide block 8 is fixed on push rod 7, therefore slide block 8 also moves right, as shown in Figure 4, projection 15 on slide block 8 passes through by force between two shell fragment legs 13, and the distance between two shell fragment legs 13 is widened, and shell fragment 12 produces certain elastic force.Main spring 6 and auxiliary spring 14 are now all in a compressive state.Once the projection 15 on slide block 8 moves to after on the right side of two shell fragment legs 13---as shown in Figure 5, elastic force between two shell fragment legs 13 of shell fragment 12 extrudes projection 15 immediately, namely slide block 8 drives push rod 7 to have an action moved right fast, moving contact 10 on this rear slider 8 contacts with fixed contact 3 immediately, and contact is good, electric tool is started working, now, lower bearing pin 18 can be pressed button 5 is fixed, make electric tool keep operating state.When not needing work, extract bearing pin 18, button 5 and push rod 7 reset under the effect of main spring 6 and auxiliary spring 14, and slide block 8 also resets thereupon, and separately, circuit disconnects for moving contact 10 and fixed contact 3.In the above-mentioned course of work, utilize shell fragment 12 with the combination of projection 15, slide block 8 can be made to convert between two positions in rapid movement mode.Advantage of the present invention is: significantly avoid switch from open position to on-position process, the vibrations of contact, make contact connect rapidly, decrease the infringement to contact, compared with the switch contact in past, extend the life-span of switch.In the application of alternating-current switch, significantly improve contact endurance, contact disconnects rapidly, and electric arc extinguishes immediately.

Claims

1. motor switch, comprise pedestal, be arranged on the fixed contact in pedestal, the upper casing matched with pedestal and be arranged on button outside upper casing and hinged with upper casing, button is hinged with upper casing and be connected by main spring between the two, it is characterized in that: sliding in described upper casing is provided with push rod, auxiliary spring is provided with between push rod and upper casing inwall, one end of button is through hinged with one end of push rod after upper casing, slide block is provided with between push rod and pedestal, slide block is provided with the moving contact matched with fixed contact, upper casing inwall is fixed with the shell fragment of Ω shape, shell fragment is between push rod and slide block, that side that slide block is positioned at shell fragment is provided with the projection matched with shell fragment two ends bending part, slide block is fixed on push rod, described button is provided with pin-and-hole, upper casing is provided with the bearing pin matched with pin-and-hole by spring, upper casing is stretched out in one end of bearing pin, when extreme position pressed by button, the other end of bearing pin can stretch in the pin-and-hole of button, described fixed contact and moving contact are four, pedestal internal fixtion has four conductors, fixed contact is separately fixed on conductor, slide block is provided with two sheet metals, every two moving contacts are fixed on a sheet metal, and described push rod is arranged with sealing ring, and sealing ring is fixed between upper casing and pedestal, pin-and-hole on described button is the mounting hole with radian, and the aperture of mounting hole is greater than the diameter of bearing pin.