CN201146137Y

CN201146137Y - Knob switch

Info

Publication number: CN201146137Y
Application number: CNU2007203058565U
Authority: CN
Inventors: 豆亚龙
Original assignee: ZHEJIANG LEO CO Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2007-11-22
Filing date: 2007-11-22
Publication date: 2008-11-05
Anticipated expiration: 2017-11-22

Abstract

The utility model relates to a knob switch used on an electric tool which needs to be controlled by positive and negative rotation like a garden shredder; the utility model includes a knob and a switch body; the switch body includes a trigging rod, an upper cover, an outer shell and a ship button type transfer switch; the bottom part of the outer shell is provided with the ship button type transfer switch and the upper part is provided with the upper cover; the upper end of the triggering rod penetrates a through hole on the upper cover and is connected with the knob; the lower end of the triggering rod is contacted with the button of the ship button type transfer switch. The operation mode of pressing the button of the ship type transfer switch is changed into the operation mode of rotating the knob switch is realized by a triggering rod, thus being more convenient for operation; besides, the utility model is led to be different from the ship type transfer switch in appearance and to be more beautiful; simultaneously, as the operation mode and the operation part is the same as the knot transfer switch after mounting, the knob transfer switch can be replaced without causing the die or appearance of a mounting panel to be changed, thereby greatly reducing the cost.

Description

A kind of rotary switch

Technical field:

The utility model relates to a kind of rotary switch device, relates in particular to the rotary switch on a kind of electric tool that is used for chipper etc. and needs rotating control.

Background technology:

The blade of chipper is rotated by driven by motor, carry out forward, counter-rotational needs in order to satisfy the chipper blade, on the existing chipper a kind of ship shape change over switch (Fig. 1) that can realize the rotating controlled function is installed usually, this ship shape change over switch uses with electromagnetic switch usually, in order to regulation and control the turning to of motor, and then realize control that the chipper blade is turned to.During use, when button motor by to left position the time just changes, by to the centre position motor rotation blockage, by the counter-rotating of motor when location right, perhaps process is opposite.Obviously, adopt its moulding of switch of said structure single, outward appearance is identical, does not meet now the various shapes trend of development day by day.And can adopt the motor of different capacity now under many circumstances for chipper, because the motor of different capacity generally requires to adopt the change over switch of different size, and the size of the change over switch of different size is generally also inequality, its installing hole size is also just inequality, therefore need to change switch installation panel or housing mould, be difficult to realize the equipment generalization.

Also has a kind of knob change over switch, its contact number of plies does not wait from 1 layer to 6 layers, select three layers of rotating control that can realize single phase induction motor for use, and the centre position is the motor stall, rather than the stall of ship shape change over switch, can directly switch during switching, and not need as the ship shape change over switch because directly switching can produce arcing, destroy switch easily, so need electromagnetic switch to cut off circuit and then switching rotating earlier.Although being compared to the ship shape change over switch, this kind knob change over switch has plurality of advantages, this construction of switch complexity, and the cost height is to 4 to 6 times of common ship shape change over switch.And along with the increase of rated current, it is very big that volume of switch becomes, and is not suitable for the requirement of electric tool structure compactness.Owing to the variation of volume, its installation dimension also produces bigger variation thereupon, is difficult to satisfy the economy requirement with a series of employing equal dies simultaneously.

The utility model content:

The technical problems to be solved in the utility model is: designing a kind of outward appearance is high-grade knob change over switch, but the inner device that adopts cheap ship shape change over switch is to reach economy, technique effect such as handsome in appearance, easy to operate, that size for connection is fixed, production cost is lower.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

A kind of rotary switch, comprise knob and switch main body, it is characterized in that: described switch main body comprises poke rod, loam cake, shell and ship shape push button change over switch, described ship shape push button change over switch is installed in the bottom of described shell, described loam cake is installed on top, described poke rod upper end is passed the through hole that covers on described and is connected with described knob, and the lower end contacts with the button of described ship shape push button change over switch.

Described poke rod be right side band minor face " L " shape promptly "

" shape, on described minor face, form blind hole, place a spring and steel ball in the described blind hole, the back side of described loam cake is provided with pit, and described steel ball can be snapped in the described pit by means of the effect of spring.

The back side of described loam cake is provided with five pits, is distributed in the both sides of Y direction center line, Yi Bian be three pits, another side is two pits.

Described three pits are provided with one on the X-direction center line, two other both sides that are distributed in the X axis center line are symmetrical arranged, and with the X axis center line on the center angle of pit be respectively 60 °, described two pits are symmetrical arranged with the X-direction center line, and are positioned at X axis center line and Y-axis on the angular bisector of center line angle.

The button phase-contact surface of the lower end of described poke rod and described ship shape push button change over switch is an arc surface.

The back side of described loam cake is provided with spacing rib, to prevent poke rod transition rotation.

Described knob is provided with blind hole, and insert in the described blind hole upper end of described poke rod.

The back side at described knob also is provided with spacing rib, can match with the limited post (not having diagram) on the installation panel, to prevent the transition rotation of knob.

The cross section of the upper end of described blind hole and described poke rod is the star of regular polygon.

Described knob is plastic products, and the upper end of described poke rod and described blind hole are tight fit.

Compared with prior art, advantage of the present utility model is: by a poke rod, realized the mode of operation of pressing button of ship shape change over switch is changed into the revolving mode of operation of rotary switch, and more convenient to operate; And make it be different from the ship shape change over switch in appearance, more attractive in appearance; Simultaneously, owing to back mode of operation and operating position being installed, can replace the knob change over switch and can not cause the mould of installation panel or the variation of profile, thereby reduce cost greatly, and product type is seamlessly transitted with the knob change over switch.

In addition, because loam cake has three blind holes on one side, another side has two blind holes, can be by conversion loam cake installation direction and third gear/two grade ship shape change over switch during installation, make rotary switch have third gear or two grades of functions, to satisfy the needs of different clients or different operating.

Description of drawings:

Fig. 1 is a ship shape change over switch schematic diagram;

Fig. 2 is the utility model rotary switch cutaway view;

Fig. 3 disassembles schematic diagram for the assembling of the utility model rotary switch;

Fig. 4 is two grades of schematic diagrames of the utility model rotary switch;

Fig. 5 is the utility model rotary switch third gear schematic diagram;

Fig. 6 is the poke rod schematic diagram;

Fig. 7 is the knob cutaway view;

Fig. 8 is the knob schematic rear view;

Fig. 9 is the loam cake schematic rear view.

Embodiment:

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in further detail.

In conjunction with Fig. 2 and shown in Figure 3, rotary switch of the present utility model comprises knob 1 and switch main body, switch main body poke rod 2, loam cake 3, shell 4, ship shape change over switch 5.The rotary switch that provides at present embodiment comprises two kinds of second gear and third gear, wherein said ship shape change over switch 5 is existing product (as shown in Figure 1), can directly buy from the market, with the corresponding ship shape change over switch 5 of third gear rotary switch can the section of selecting for use HY12-9 types of electrical equipment all.Loam cake 3 is positioned at below the switch installation panel (not shown), and it can be connected by screw with the switch installation panel, and loam cake 3 is connected to form switch main body with shell 4 by screw 6.As shown in Figure 9, five pits 31 are arranged at loam cake 3 lower surfaces (being the back side), Yi Bian three, Yi Bian two, the location when being respectively applied for third gear and second gear, as shown in Figure 4 and Figure 5.Leave the installing hole of ship shape change over switch 5 in shell 4 bottoms, ship shape change over switch 5 is connected with shell 4 by the both sides buckle.Poke rod 2 upper ends are passed loam cake 3 centre bores 32 and are stretched out the switch installation panel and are connected with knob 1, and the bottom places on the button 51 of ship shape change over switch 5.As shown in Figure 7, the center of knob 1 is provided with blind hole 11, insert in the blind hole 11 of knob 1 upper end of poke rod 2, both are tight fit, and the cross section on the top of blind hole 11 and poke rod 2 is star-like, and knob 1 adopts plastics to make again, then can transfer torque, and according to the characteristic of working of plastics, be not drawn out easily after making poke rod 2 insert knobs 1, avoid client's coming off or lose the inconvenience that brings operation in use because of knob.In addition, as shown in Figure 8, also be provided with spacing rib 12 at the back side of knob 1, its limited post (not shown) that is connected with switch on the panel is used, thereby prevents excessively rotation destruction switch of knob 1.Like this when knob 1 during from a rotated position to another position, drive poke rod 2 rotations, the button 51 of bottom arc surface extruding ship shape change over switch 5 in poke rod 2 rotary courses, ship shape change over switch 5 inner contact break-makes are changed, thereby can control the rotating of motor, reach designing requirement.

Further, in order in rotation process, to produce the damping sense, make the turned position fix, clearly, be convenient to operator's operation, as shown in Figure 6, on poke rod 2, be provided with a blind hole 21, spring 22 and steel ball 23 are housed in it, steel ball 23 tops contact with loam cake 3 lower surfaces, and poke rod 2 drives steel ball 23 and rotates steel ball 23 compression springs 22 along loam cake 3 lower surfaces in rotation process, provide the damping sense by friction loam cake 3, when forwarding a pit to, steel ball enters and is snapped in this pit, and the damping sense disappears, gear is rotated in place, guarantee that knob 1 aims at corresponding gear, staff's knob 1 that stops operating was finished a job and was regulated this moment.In addition, in order further to prevent excessive rotation, as shown in Figure 9, be provided with spacing rib 33 at loam cake 3 lower surfaces, in order to the inordinate rotation of restriction poke rod 2, thereby protection switch does not damage because of the transition rotation yet.

More than to the description of embodiment of the present utility model, purpose is only for ease of understanding the utility model, and should not regard as restriction of the present utility model.The those of ordinary skill in relevant field, various variations of being made in not breaking away from connotation of the present utility model and scope and their equivalent all fall into protection range of the present utility model.

Claims

1, a kind of rotary switch, comprise knob (1) and switch main body, it is characterized in that: described switch main body comprises poke rod (2), loam cake (3), shell (4) and ship shape push button change over switch (5), described ship shape push button change over switch (5) is installed in the bottom of described shell (4), described loam cake (3) is installed on top, the through hole (32) that described poke rod (2) upper end is passed on the described loam cake (3) is connected with described knob (1), and the lower end contacts with the button (51) of described ship shape push button change over switch (5).

2, rotary switch according to claim 1, it is characterized in that: described poke rod (2) is " L " shape of right side band minor face, on described minor face, form blind hole (21), place a spring (22) and steel ball (23) in the described blind hole (21), the back side of described loam cake (3) is provided with pit (31), and described steel ball (23) can be snapped in the described pit (31) by means of the effect of spring (22).

3, rotary switch according to claim 2 is characterized in that: the back side of described loam cake (3) is provided with five pits (31), is distributed in the both sides of Y direction center line, Yi Bian be three pits (31), another side is two pits (31).

4, rotary switch according to claim 3, it is characterized in that: described three pits (31) are provided with one on the X-direction center line, two other both sides that are distributed in the X axis center line are symmetrical arranged, and with center line on the center angle of pit (31) be respectively 60 °, described two pits (31) are symmetrical arranged with the X-direction center line, and are positioned at X axis and Y-axis on the angular bisector of centreline space angle.

5, according to the arbitrary described rotary switch of claim 1～4, it is characterized in that: button (51) phase-contact surface of the lower end of described poke rod (2) and described ship shape push button change over switch (5) is an arc surface.

6, rotary switch according to claim 5 is characterized in that: the back side of described loam cake (3) is provided with spacing rib (33), to prevent poke rod (2) transition rotation.

7, according to the arbitrary described rotary switch of claim 1～4, it is characterized in that: described knob (1) is provided with blind hole (11), and insert in the described blind hole (11) upper end of described poke rod (2).

8, rotary switch according to claim 7 is characterized in that: also be provided with spacing rib (12) at the back side of described knob (1), can match with the limited post on the installation panel, to prevent the transition rotation of knob (1).

9, rotary switch according to claim 7 is characterized in that: the cross section of the upper end of described blind hole (11) and described poke rod (2) is the star of regular polygon.

10, rotary switch according to claim 9 is characterized in that: described knob (1) is plastic products, and the upper end of described poke rod (2) and described blind hole (11) are tight fit.