A kind of sofa extending apparatus
Technical field
The utility model relates to a kind of extending apparatus, refers to a kind of sofa extending apparatus specifically.
Background technology
Along with the development of economy and technology, sofa has been the furniture of many families indispensability.The developing history of sofa is long, and its shape and kind are also continuous in change, and have American sofa, Japanese sofa, Chinese style sofa etc. as divided according to style, dividing according to material has leather sofa, cloth sofa, fabric sofa etc.Nowadays, people can choose the type of sofa according to different aspects such as the decoration style of indoor, making materials.One packages sofa, can not only embody the taste of individual, and can bring us incomparable comfort in use.
At present, sofa generally only includes seat portion and relying part, and seat portion and relying part are all fixing, along with the prolongation of the time that is seated on sofa, the replacing carrying out posture that people are always accustomed to, especially the leg of people and back need better to be unfolded, better to enjoy the comfortableness be sitting on sofa.But current sofa is all fixing substantially, and function ratio is more single, people cannot be met while the sofa that is seated, carry out unfolding of pin and back.
Utility model content
The utility model provides a kind of sofa extending apparatus, and its main purpose is to overcome existing sofa cannot meet the problem that people carry out leg and back unfolding while the sofa that is seated.
In order to solve above-mentioned technical problem, the utility model adopts following technical scheme:
A kind of sofa extending apparatus, comprise base, leg telescoping mechanism, back telescoping mechanism, first push-rod electric machine, second push-rod electric machine, first switch and second switch, described leg telescoping mechanism is connected to the front end of base rotationally, described back telescoping mechanism is connected to the rear end of base rotationally, described first push-rod electric machine and the second push-rod electric machine are all fixed on base, the push rod of described first push-rod electric machine is fixedly connected with the rear end of leg telescoping mechanism, and leg telescoping mechanism can be driven to do Telescopic rotating action, the push rod of described second push-rod electric machine is fixedly connected with the front end of back telescoping mechanism, and back telescoping mechanism can be driven to do Telescopic rotating action, described first push-rod electric machine is electrically connected with the first switch, described second push-rod electric machine is electrically connected with second switch.
This sofa extending apparatus also comprises the 3rd switch, and described first push-rod electric machine and the second push-rod electric machine are all electrically connected with the 3rd switch.
Further, described leg telescoping mechanism comprises a left side, right stretching structure, this left side, right stretching structure includes the first expansion link, second expansion link, 3rd expansion link, 4th expansion link, connecting rod and connector, one end of described connecting rod is fixedly connected with base, one end of described first expansion link and one end of described connecting rod hinged, the other end of this first expansion link and one end of the second expansion link hinged, the other end and the connector of this second expansion link are hinged, one end of described 3rd expansion link and the other end of described connecting rod hinged, the other end of the 3rd expansion link and one end of the 4th expansion link hinged, the other end and the connector of the 4th expansion link are hinged, the middle part of described second expansion link and the middle part of the 3rd expansion link hinged, a cross bar is connected with between first expansion link of described left stretching structure and the first expansion link of right stretching structure, the side Middle face of this cross bar is provided be fixedly connected with and spaced apart two first braces laterally inclined with this, this two first brace is fixedly connected with push rod one end of the first push-rod electric machine.
Further, a bracing piece is connected with between the connecting rod of described left stretching structure and the connecting rod of right stretching structure.
Further, two support bars that described back telescoping mechanism comprises bracing frame and is fixedly connected with the end face both sides of bracing frame, support frame as described above is connected rotationally with base, one side of support frame as described above is provided be fixedly connected with and spaced apart two second braces laterally inclined with this, and this two second brace is fixedly connected with push rod one end of the second push-rod electric machine.
From above-mentioned to description of the present utility model, compared to the prior art, the utility model tool has the following advantages: first, second switch described is respectively used to control first, second push-rod electric machine, leg telescoping mechanism is placed plate with a leg of sofa be connected, when the push rod of the first push-rod electric machine drives leg telescoping mechanism make extending forwards and rotate up, now leg can be positioned on leg placement plate by people, and people are as required by the angle of the first switch control rule leg telescoping mechanism; Otherwise, when the push rod of the first push-rod electric machine drives leg telescoping mechanism to do to after-contraction and when being rotated down, leg is placed plate and bounced back downwards.Back telescoping mechanism is connected with the backrest of sofa, when the push rod of the second push-rod electric machine drives back telescoping mechanism to do to stretch backward and when being rotated down, now people can along with backrest be to layback, and people control the angle of back telescoping mechanism as required by second switch; Otherwise when the push rod of the second push-rod electric machine drives back telescoping mechanism make withdrawn forward and rotate up, backrest upwards bounces back.Adopt the utility model can realize people while the sofa that is seated, carry out unfolding of leg and back, easy to use, comfortable.
Accompanying drawing explanation
Fig. 1 is schematic front view of the present utility model.
Fig. 2 is the schematic top plan view of the utility model leg telescoping mechanism.
Fig. 3 is theory diagram of the present utility model.
Detailed description of the invention
With reference to Fig. 1 and Fig. 3.A kind of sofa extending apparatus, comprises base 1, leg telescoping mechanism 2, back telescopic machine 3 structure, the first push-rod electric machine 4, second push-rod electric machine 5, first switch 6 and second switch 7.Described leg telescoping mechanism 2 is connected to the front end of base 1 rotationally, and described back telescoping mechanism 3 is connected to the rear end of base 1 rotationally.Described first push-rod electric machine 4 and the second push-rod electric machine 5 are all fixed on base 1, and the push rod 41 of described first push-rod electric machine 4 is fixedly connected with the rear end of leg telescoping mechanism 2, and leg telescoping mechanism 2 can be driven to do Telescopic rotating action.The push rod 51 of described second push-rod electric machine 5 is fixedly connected with the front end of back telescoping mechanism 2, and back telescoping mechanism 3 can be driven to do Telescopic rotating action.Described first push-rod electric machine 4 is electrically connected with the first switch 6, and described second push-rod electric machine 5 is electrically connected with second switch 7.
See figures.1.and.2.Described leg telescoping mechanism 2 comprises left stretching structure 21 and right stretching structure 22, and this left stretching structure 21 and right stretching structure 22 include the first expansion link 221, second expansion link 222, the 3rd expansion link 223, the 4th expansion link 224, connecting rod 225 and connector 226.One end of described connecting rod 225 is fixedly connected with base 1, one end of described first expansion link 221 and one end of described connecting rod 225 hinged, the other end of this first expansion link 221 and one end of the second expansion link 222 hinged, the other end and the connector 226 of this second expansion link 222 are hinged.One end of described 3rd expansion link 223 and the other end of described connecting rod 225 hinged, the other end of the 3rd expansion link 223 and one end of the 4th expansion link 224 hinged, the other end and the connector 226 of the 4th expansion link 224 are hinged.The middle part of described second expansion link 222 and the middle part of the 3rd expansion link 223 hinged, a cross bar 23 is connected with between first expansion link 221 of described left stretching structure 21 and the first expansion link 221 of right stretching structure 22, the side Middle face of this cross bar 23 is provided be fixedly connected with and spaced apart two first braces 231 laterally inclined with this, and this two first brace 231 is fixedly connected with push rod 41 one end of the first push-rod electric machine 4.Be connected with a bracing piece 24 between the connecting rod 225 of described left stretching structure 21 and the connecting rod 225 of right stretching structure 22, this bracing piece 24 is for reinforcing the stability of left stretching structure 21 and right stretching structure 22.
With reference to Fig. 1 and Fig. 3.Described first switch 6 controls the first push-rod electric machine 4 and works, when the push rod 41 of the first push-rod electric machine 4 extends, push rod 41 promotes cross bar 23 and rotates clockwise, now the first expansion link 221, second expansion link 222, the 3rd expansion link 223 and the 4th expansion link 224 are forward and upwards rotate, connector 226 is placed plate with the leg of sofa be fixedly connected with, when push rod 41 extends, leg placement plate can upwards be lifted, for the placement of people's pin.Otherwise when push rod 41 shrinks, backward and rotate, leg is placed plate and is bounced back backward for the first expansion link 221, second expansion link 222, the 3rd expansion link 223 and the 4th expansion link 224.
With reference to Fig. 1 and Fig. 3.Two support bars 32 that described back telescoping mechanism 3 comprises bracing frame 31 and is fixedly connected with the end face both sides of bracing frame 31, support frame as described above 31 is connected rotationally with base 1, one side of support frame as described above 31 is provided be fixedly connected with and spaced apart two second braces 311 laterally inclined with this, and this two second brace 311 is fixedly connected with push rod 51 one end of the second push-rod electric machine 5.Described second switch 7 controls the second push-rod electric machine 5 and works, when push rod 51 extends, push rod 51 promotes bracing frame 31 backward and rotate, and is connected by the backrest of sofa with two support bars 32, when push rod 51 extends, backrest can to layback, and people can lie down along with backrest.Otherwise when push rod 51 shrinks, forward and upwards rotate, backrest upwards bounces back bracing frame 31.
In addition, with reference to Fig. 3.The utility model also can comprise the 3rd switch 8, described first push-rod electric machine 4 and the second push-rod electric machine 5 are all electrically connected with the 3rd switch 8,3rd switch 8 can control the first push-rod electric machine 4 and the second push-rod electric machine 5 simultaneously, meet the different angles demand of people to the pedal of sofa and backrest, add the flexibility that the utility model uses.
Above are only detailed description of the invention of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design the utility model to be carried out to unsubstantiality, all should belong to the behavior of invading the utility model protection domain.