Mounting apparatus with slide structure

1. A mounting apparatus for slidably mounting a chassis to a shelf, comprising:

two gears to be pivotably attached to one side surface of the chassis;

a positioning structure arranged on the chassis aligning one of the gears, wherein the positioning structure comprises a shaft fixed to the chassis, a receiving member set around the shaft, a stop member set around the shaft and slidably, nonrotatably received in the receiving member, and a resilient member set around the shaft and received in the receiving member to bias the stop member toward the one of the gears, the stop member engages with a gear tooth of the one of the gears; wherein a mounting plate is fixed to the side surface of the chassis, a fixing plate is fixed to a front end surface of the chassis, the gears are pivotably attached to the mounting plate;

wherein the positioning structure is arranged on the fixing plate and faces one of the gears, the shaft extends rearward from the fixing plate and

a slide rail to be fixed on an inner side surface of the shelf, the slide rail comprising a rack meshing with the gears.

2. The mounting apparatus of claim 1 , wherein the mounting plate defines two spaced round receiving portions in a lower portion and extending through the bottom of the mounting plate, each of the gears is pivotably received in a corresponding receiving portion.

3. The mounting apparatus of claim 1 , wherein the receiving member defines a receiving space, the stop member comprises a wedge portion formed at a first end of the stop member and extending out of the receiving space, and a stepped portion formed at a second end of the stop member and slidably received in the receiving space, the resilient member abuts against the stepped portion and the receiving member, the wedge portion comprises a slope surface engageable with the gear tooth of the one of the gears.

4. The mounting apparatus of claim 3 , wherein two opposite positioning holes are defined in an end of the receiving member and face to the fixing plate, a pin extends from the fixing plate and parallel to the shaft, to selectively engage in one of the positioning holes for positioning the receiving member.

5. The mounting apparatus of claim 1 , wherein a plurality of resilient raised portions protrudes from the inner side surface of the slide rail to abut against the mounting plate.

6. The mounting apparatus of claim 1 , wherein a locking slot is defined in a back end of the mounting plate, a locking block is formed from a back end of the rack to engage in the locking slot.

7. An assembly comprising:

a shelf comprising a slide rail, the slide rail comprising a rack;

a chassis;

a mounting plate fixed to one side surface of the chassis;

a positioning structure arranged on the mounting plate aligning one of the gears, wherein the positioning structure comprises a shaft fixed to the mounting plate, a receiving member set around the shaft, a stop member set around the shaft and slidably, nonrotatably received in the receiving member, and a resilient member set around the shaft and received in the receiving member to bias the stop member toward the one of the gears, the stop member engages with a gear tooth of the one of the gears; wherein the mounting plate defines two spaced round receiving portions in a lower portion and extending through the bottom of the chassis, each of the gears is pivotably received in a corresponding receiving portion;

wherein a fixing plate is fixed to a front end surface of the mounting plate, the positioning structure is arranged on the fixing plate and faces the one of the gears, the shaft extends rearward from the fixing plate and

two gears pivotably attached to the mounting plate and mesh with the rack.

8. The assembly of claim 7 , wherein the receiving member defines a receiving space, the stop member comprises a wedge portion formed at a first end of the stop member and extending out of the receiving space, and a stepped portion formed at a second end of the stop member and slidably received in the receiving space, the resilient member abuts against the stepped portion and the receiving member, the wedge portion comprises a slope surface engageable with the gear tooth of the one of the gears.

9. The assembly of claim 8 , wherein two opposite positioning holes are defined in an end of the receiving member and face the fixing plate, a pin extends from the fixing plate and parallel to the shaft, to selectively engage in one of the positioning holes for positioning the receiving member.

10. The assembly of claim 7 , wherein a plurality of resilient raised portions protrudes from the inner side surface of the slide rail to abut against the mounting plate.

11. The assembly of claim 7 , wherein a locking slot is defined in a back end of the mounting plate, a locking block is formed from a back end of the rack to engage in the locking slot.