Support mechanism
A support mechanism includes a bracket, two sliding members, a first arm, a second arm, and an elastic member. The sliding members are slidably connected to the bracket. Each sliding member includes a resisting portion. An end of the first arm is pivotally connected to the bracket. An end of the second arm is pivotally connected to the first arm and the bracket. The elastic member is positioned between the first, second arms and the bracket. An elastic force of the elastic member acts on the first arm and the second arm to make the resisting portions of the sliding members resist the first arm and the second arm.
1. A support mechanism, comprising:
a bracket having a top end and a bottom end;
two sliding members slidably connected to the bracket, each sliding member comprising a resisting portion;
a first arm having an end pivotally connected to the bracket;
a second arm having an end pivotally connected to the first arm and the bracket; and
an elastic member positioned between the first and second arms and the bracket;
wherein an elastic force of the elastic member acts on the first arm and the second arm to make the resisting portions of the sliding members resist the first arm and the second arm.
2. The support mechanism of claim 1 , wherein the resisting portion of the sliding member comprises a pivoting portion and a wheel, and the wheel resists the first arm or the second arm.
3. The support mechanism of claim 1 , wherein the sliding member further comprises an inner slide track; and the bracket comprises a supporting member and two outer slide tracks to engage with the inner slide tracks.
4. The support mechanism of claim 3 , further comprising a holding member fixed to the inner slide tracks of the sliding members.
5. The support mechanism of claim 1 , further comprising a third arm and a fourth arm, wherein the first arm is pivotally connected to the third arm, the second arm is pivotally connected to the fourth arm, and the third arm is pivotally connected to the fourth arm.
6. The support mechanism of claim 5 , further comprising a first pivot pivotally connecting the first arm, the second arm, and the bracket, a second pivot pivotally connecting the first arm and the third arm, a third pivot pivotally connecting the second arm and the fourth arm, and a fourth pivot pivotally connecting the third arm and the fourth arm.
7. The support mechanism of claim 6 , further comprising a connecting piece sleeved on the fourth pivot; wherein the bracket forms a fixing protrusion; and one end of the elastic member is connected to the connecting piece, and another end of the elastic member is connected to the fixing protrusion.
8. The support mechanism of claim 7 , wherein the bracket further defines a pivot hole at a top portion of the bracket and a guiding slot, the fixing protrusion is at a bottom portion of the bracket; the first pivot extends in the pivot hole, and the fourth pivot slidably extends in the guiding slot; and the elastic member is an extension spring.
9. The support mechanism of claim 1 , wherein the bracket forms a guiding portion, and ends of the first arm and the second arm resist the guiding portion and slide along the guiding portion.
10. The support mechanism of claim 9 , wherein the bracket forms a fixing protrusion and a first guiding slot below the fixing protrusion, and the first guiding slot extends substantially perpendicularly to the guiding portion; and the elastic member is positioned between the fixing protrusion and the first and second arms.
11. The support mechanism of claim 10 , wherein the guiding portion is a second guiding slot defined in the bracket and below the first guiding slot; the support mechanism further comprises a first pivot pivotally connecting the first arm and the second arm, a second pivot pivotally connected to the first arm and slidably received in the second guiding slot, a third pivot pivotally connected to the second arm and slidably received in the second guiding slot, and a connecting piece sleeved on the first pivot and connected to the elastic member; and the elastic member is a compression spring.