The utility model content
The main technical problems to be solved in the utility model is the power-assisted door handle assembly that provides a kind of user of being convenient to beat opening door body easily, easily, and the electric equipment that has this power-assisted door handle assembly.
For solving the problems of the technologies described above, the utility model provides a kind of power-assisted door handle assembly, comprises handle, also comprises push rod, rotating shaft and is installed in holder on the body; Described push rod comprises the promote-side and is used to prop up the end that ejects of doorframe; Described handle comprises and draws back end, drive end and rotation section, and described drive end and described promote-side are linked, and described rotation section is rotatably connected on the described holder by described rotating shaft; Also be with in the described rotating shaft and utilize elastic force to drive the torsion spring that described handle rotation resets, also be provided with the limiting section that is used for propping up described handle on the described holder in the process that described handle rotation resets.
Preferably, the promote-side of described push rod is provided with tooth bar, and the drive end of described handle is provided with the partial gear with described tooth bar engagement; Described rotating shaft is positioned at the centre of pitch circle of described partial gear.
Further, form sliding pair in described promote-side and the part and the described chute that eject between the end on the described push rod.
Preferably, described holder comprises slide rail, is provided with the chute that matches with described slide rail in described promote-side with the part that ejects between the end on the described push rod.
Described handle comprises that also at the connecting portion that draws back between end and the drive end, described limiting section comprises the projection of extending to described connecting portion from described holder.
Among a kind of embodiment, described connecting portion is a thin wall construction, and described handle also comprises upper casing, lower casing and rear wall, and described rotating shaft and projection all are contained in described upper casing, lower casing, connecting portion and rear wall and surround in the cavity of formation.
Preferably, described holder is the plastics holder of embedded metal sheet metal component.
The utility model has also been protected a kind of electric equipment, comprises doorframe, and the door body that matches with described doorframe also comprises above-described power-assisted door handle assembly.
The beneficial effects of the utility model are: the disclosed power-assisted door handle assembly of the utility model is convenient to the door body that the user opens electric equipment like a cork, when drawing back of user's pull handle held, handle rotates around rotating shaft, thereby with the rotating shaft is that fulcrum forms leverage, drive end can be to the push rod applied thrust, and make push rod eject end to the doorframe applied thrust, and a door body breaks away from mutually with doorframe under the reaction force of this thrust, the user can beat opening door body like a cork; Also be provided with torsion spring and limiting section on the power-assisted door handle assembly, be used to realize automatically reseting of handle and push rod under the state of closing the door, and its reset position is accurately limited, can not influence normally closing of a body.
The specific embodiment
In conjunction with the accompanying drawings the utility model is described in further detail below by the specific embodiment.
Embodiment one:
Please refer to Fig. 1 and Fig. 2, the power-assisted door handle assembly of present embodiment comprises handle 2, push rod 3, rotating shaft 9 and is installed in holder 5 on the body 7.When being installed in the power-assisted door handle assembly on the body 7, fixed part 5 can be installed on the sidewall of a body 7 and bending extends to the front of a body 7 by screw 4, push rod 3 is positioned on the sidewall of a body 7, rotating shaft 9 and handle 2 can be positioned at the front of a body 7, are convenient to the user and manually draw back handle 2 door body 7 is opened.
Push rod 3 comprises promote-side 31 and ejects end 32 that matching with handle 2 in promote-side 31, ejects end 32 and be used to prop up doorframe 8, is convenient to when user's pull handle 2 doorframe 8 applied thrusts.Handle 2 comprises and draws back end 21, drive end 22 and rotation section, and drive end 22 is linked with promote-side 31, and the rotation section is rotatably connected on the holder 5 by rotating shaft 9.
As shown in Figure 7, when the user along the arrow A direction outwards (away from the direction of doorframe 8) draw back when holding 21, it is that fulcrum forms leverage that thereby whole handle 2 rotates with rotating shaft 9 around rotating shaft 9, drive end 22 can apply inside thrust to push rod 3 by promote-side 31, and make ejecting of push rod 3 hold 31 to doorframe 8 applied thrusts, and door body 7 breaks away from mutually with doorframe 8 under the reaction force of this thrust, and outwards move with respect to doorframe 7 and push rod 3 along the arrow B direction, the user can beat opening door body 7 like a cork.Under the situation of utilizing the magnetic door strip of paper used for sealing to fit between doorframe 7 and the door body 8, the power-assisted handle assembly of present embodiment can avoid the user to expend just the pull the door open situation of body 7 of great strength very, especially door body 8 big, when magnetic attracting power is strong, the labor-saving effect of power-assisted handle assembly is more obvious.
Also be with in the rotating shaft 9 and utilize elastic force to drive the torsion spring 6 that handle 2 rotations reset, also be provided with the limiting section that is used for propping up handle 2 on the holder 5 in the process that handle 2 rotations reset.Handle 2 comprises also that at the connecting portion 23 that draws back between end 21 and the drive end 22 limiting section can be set to from the projection 52 of holder 5 to these connecting portion 23 extensions.When door body 7 was opened, projection 52 can't hinder handle 2 and rotate around rotating shaft 9; As shown in Figure 8, after the user unclamps handle 2 and closes to the doorstep body 7, door body 7 drives handle 2 and inwardly moves also progressively near doorframe 8, in this process, torsion spring 6 becomes extended configuration from compressive state, handle 2 rotates in the elastic reaction lower edge of this torsion spring 6 arrow C direction and resets, propped up by projection 52 when turning to rational position, this moment, handle 2 reset to the end, push rod 3 is also fixing thereupon with respect to the position of door body 7, therefore can not influence normally closing of door body 7, and provide convenience for the user beats opening door body 7 once more owing to misplacing between door body 7 and the push rod 3.Further, the design of torsion spring 6 makes the process high resilience of user's pull handle 2, and feel is better.
In when assembling interlock between drive end 22 on the handle 2 and the promote-side 31 on the push rod 3, can adopt mode such as hinged, slide block to cooperate.In the preferred implementation as shown in Figure 1, the promote-side 31 of push rod 3 also is provided with tooth bar, the drive end 22 of handle 2 is provided with the partial gear with this tooth bar engagement, and rotating shaft 9 is positioned at the centre of pitch circle of partial gear, when handle 3 rotates around rotating shaft 9, tooth bar and partial gear formative gear tooth bar engaged transmission, drive mechanism is simple, and motion is more steady.
To shown in Figure 4, holder 5 can adopt the working of plastics of embedded metal sheet metal component as Fig. 2, and structure is very firm.Holder 5 comprises two braces 53, a projection 52 all is set on each brace 53, and all be provided with a through hole on each brace 53, rotating shaft 9 is passed two through holes and is installed between two braces 53, handle 2 articulates by rotating shaft 9 and holder 5, can relatively rotate between rotating shaft 5 and holder 5.Holder 5 also comprises slide rail 51, on the push rod 3 in promote-side 31 and eject the part of end between 32 and be provided with the chute that is complementary with slide rail 51, when push rod 3 relatively moves with holder 5, slide rail 51 places in the chute and with chute and forms sliding pair, can effectively limit the movement locus of push rod 3, avoid it to be offset.Chute can be different shapes such as rectangle chute, T type chute, V-arrangement chute, dovetail groove, and the cross sectional shape of slide rail 51 is corresponding with chute, and the push rod 3 that for example has a T shape chute and the assembling mode of holder 5 are as shown in Figure 5.As a kind of alternative embodiment, but also in promote-side 31 and the part that ejects between the end 32 slide rail is set on the push rod 3, corresponding part is provided with chute on the holder 5.
Handle 2 can be entity structure, also can be designed to the cavity of hollow.In the cavity body structure as shown in Figure 2, connecting portion 23 can be designed to thin wall construction, handle 2 also comprises upper casing 24, lower casing 25 and rear wall 26, upper casing 24, lower casing 25, connecting portion 23 and rear wall 26 surround and form a cavity, and rotating shaft 9 and projection 52 all be contained in the cavity, form the described assembly structure of Fig. 6.Mechanical performances such as the handle 2 of present embodiment on the one hand can countershaft 9, projection 52 more weak structure are relatively protected, and can avoid staff to crush on the other hand.When handle 3 reset to the end, the inner surface that projection 52 directly props up connecting portion 23 limited the reset position of handle 3.
In a kind of embodiment, electric equipment can be provided with two power-assisted door handle assemblies at the upper and lower of door body 7 respectively, also comprises pull bar 1, and the two ends of pull bar 1 hold 21 by screw drawing back of handle 2 in two power-assisted door handle assemblies respectively.The user can hold pull bar 1 and like a cork door body 7 be drawn back by handle 2, uses more flexible.Certainly, pull bar 1 is not prerequisite parts.
The utility model power-assisted door handle assembly can be widely used on the multiple electric equipment, for example household electrical appliance such as refrigerator, wine cabinet, ice machine, disinfection cabinet, and the various plant and instrument of industrial circle.Especially in the electric equipment that adopts the magnetic door strip of paper used for sealing to realize fitting tightly between the Men Tiyu doorframe 8, the utility model power-assisted door hand assembly is convenient to the user and is beaten opening door body easily, stable action not only, and automatically reseting of handle and push rod, good reliability have been guaranteed in conjunction with the structure of torsion spring and limiting section; Further, the utility model power-assisted door handle assembly is simple in structure, easy for installation, with low cost.
Above content be in conjunction with concrete embodiment to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.