CN108106316B

CN108106316B - A pull part and refrigerator that is used for lazytongs and has it

Info

Publication number: CN108106316B
Application number: CN201711460438.8A
Authority: CN
Inventors: 何文华; 王宁; 杨忠岭
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2021-10-29
Anticipated expiration: 2037-12-28
Also published as: CN108106316A

Abstract

The invention provides a synchronous mechanism for a slide rail, wherein the slide rail comprises a slide rail bracket and a movable slide rail which are arranged in parallel, and the synchronous mechanism comprises: a pair of gears which are respectively and rotatably arranged at the back parts of the opposite inner sides of the pair of movable slide rails; the connecting rod stretches across the sliding rails, and two ends of the connecting rod are respectively connected with the pair of gears; the pair of racks are respectively arranged on the pair of slide rail brackets and are respectively meshed with the pair of gears; the inner side of the gear, which is far away from the movable slide rail, is provided with a connecting shaft sleeve to allow the connecting rod to be inserted into and connected with the connecting shaft sleeve; the front ends of the racks in the pull-out direction are provided with toothless sections, so that the gears are separated from the racks in the toothless sections when the movable sliding rail is pulled out forwards to the limit position relative to the sliding rail bracket. The synchronous mechanism can adjust the position relation between the gears at two sides for synchronization and the corresponding racks at the pushing initial position of the slide rail, so that the gears at two sides are always kept in a concentric state in the pushing process of the slide rail, and the synchronous operation of the slide rails at two sides is ensured.

Description

A pull part and refrigerator that is used for lazytongs and has it

Technical Field

The invention relates to the technical field of sliding rails, in particular to a synchronizing mechanism for a sliding rail.

Background

The existing sliding rail component applied to the drawing parts such as the drawer and the like can cause the sliding rails on two sides to be asynchronous due to uneven stress in the process of being drawn and pulled, so that the drawing parts swing during the drawing and pulling, and the usability is poor. The synchronizing mechanism for the slide rail assemblies in the prior art has limited effect of forcing the slide rails on two sides to move synchronously by connecting the movable slide rails in the slide rail assemblies on two sides, and the existing synchronizing mechanism can cause more serious dislocation of the slide rails under the condition that the slide rails are not synchronized. In addition, because the synchronizing mechanism is frequently in an abnormal stress state, some component parts and the like of the synchronizing mechanism are easy to damage and difficult to replace, and the practicability of the synchronizing mechanism is reduced.

Disclosure of Invention

One object of the present invention is to provide a synchronizing mechanism for improving the synchronization degree of two sides of a slide rail.

A further object of the present invention is to provide a synchronization mechanism with a self-adjusting function, so as to adjust the moving state of the slide rail when the two sides of the slide rail are not synchronized.

It is another further object of the present invention to simplify the assembly of the slide and the synchronization mechanism.

In particular, the present invention provides a synchronization mechanism for a slide rail, the slide rail including a pair of slide rail brackets arranged in parallel and a pair of movable slide rails arranged on the pair of slide rail brackets, the synchronization mechanism comprising:

a pair of gears rotatably disposed at the inner rear parts of the pair of movable slide rails;

the connecting rod stretches across the sliding rails, and two ends of the connecting rod are respectively connected with the pair of gears so as to enable the pair of gears to synchronously rotate;

the pair of racks are respectively arranged on the pair of slide rail brackets and are respectively meshed with the pair of gears; wherein

A connecting shaft sleeve is formed on the inner side of the gear, which is far away from the movable slide rail, so that the connecting rod is allowed to be inserted into and connected with the connecting shaft sleeve;

the installation direction of the pair of racks is consistent with the push-pull direction of the movable slide rail relative to the slide rail bracket, and the length of the racks corresponds to the push-pull stroke of the slide rail; and

the front ends of the racks in the pulling-out direction are provided with toothless sections, so that the gears are separated from the racks in the toothless sections when the movable sliding rail is pulled out forwards relative to the sliding rail bracket to the limit position.

Further, both ends of the connecting rod are configured to have a non-circular cross-section; and is

At least a portion of the inside shaft hole of the connecting boss is configured to have the non-circular cross section to prevent the connecting rod from rotating relative to the connecting boss.

Further, the synchronization mechanism further includes:

the stop clamping ring is configured into a ring shape with an opening so as to be clamped on the outer side of the connecting shaft sleeve; wherein

A through hole is formed in the shaft sleeve wall of the connecting shaft sleeve of at least one gear;

the backstop snap ring has the backstop pole, the backstop pole is configured into from snap ring inner circle surface orientation the annular centre of a circle of backstop snap ring extends, and is in backstop snap ring joint in insert when connecting the axle sleeve the through-hole to the restriction the axial displacement of connecting rod.

Further, the synchronization mechanism further includes:

the pair of fixed seats are respectively fixed at the rear parts of the opposite inner sides of the pair of movable slide rails;

a pair of support shaft sleeves respectively mounted on the pair of fixing seats and arranged so that central axes thereof are respectively perpendicular to the pair of fixing seats; wherein

Each support shaft sleeve is provided with a first end facing the corresponding fixed seat and a second end departing from the corresponding fixed seat;

each fixing seat is provided with an accommodating hole, at least part of the edge of the accommodating hole is provided with a shielding part, and the shielding part is configured to extend from the part of the edge to the inside of the accommodating hole on the inner side of the fixing seat so as to shield part of the accommodating hole; and

the first end of each supporting shaft sleeve is detachably clamped in the corresponding accommodating hole of the fixed seat, and the second end of each supporting shaft sleeve is rotatably connected with the corresponding gear.

Further, the accommodating hole is configured as a long square hole, and a front end hole wall of the square hole along the pull-out direction and a part of an upper end hole wall and a part of a lower end hole wall connected with the front end hole wall are configured to extend from the plane of the accommodating hole to the inner side of the fixing seat so as to form a three-sided closed stop wall;

the extending tail ends of the stop walls formed by extending the parts of the upper end hole walls and the parts of the lower end hole walls are bent and extended oppositely, so that two opposite shielding parts are formed on the inner side of the fixed seat.

Furthermore, the outer part of the first end of the supporting shaft sleeve is in a square step shape and is provided with a bottom plate part and a connecting part positioned on the inner side of the bottom plate part;

the first end is configured to enable the bottom plate portion and the connecting portion to be respectively attached and abutted with any one of the shielding portions along two mutually perpendicular directions when the bottom plate portion is completely embedded into at least part of the accommodating hole.

Furthermore, a collision part which can move under stress and can be reset after releasing the stress is formed at the rear part of the square hole along the pulling-out direction, and the collision part is configured to obliquely extend to the rear part of the stop wall from the rear end hole wall to the front and towards the inner side of the fixed seat;

the extending tail end of the interference part is bent towards the outer side of the fixed seat and continues to extend to an interface of the fixed seat and the movable slide rail so as to form an interference end penetrating through the accommodating hole; and

the abutting part is configured to be capable of moving towards the fixed seat under the force to the plane of the accommodating hole so as to allow the bottom plate part to be inserted into the accommodating hole from back to front, and after the bottom plate part is completely embedded into the accommodating hole, the abutting part can reset and enables the abutting end to be restored to be located behind the stopping wall so as to prevent the bottom plate part from being separated from the accommodating hole.

Further, an annular boss is formed on the outer portion of the second end of the support sleeve;

an annular concave cavity is formed on the outer side of the gear, facing the movable slide rail, and a plurality of clamping hooks are formed on the cavity bottom of the annular concave cavity and are configured to be rotatably clamped with the annular boss so as to be rotatably mounted on the movable slide rail through the supporting shaft sleeve fixed on the fixed seat; and

the hooks are located on an imaginary circle concentric with the annular cavity.

The invention also provides a pull-out part fitted with a slide rail according to any one of the preceding claims and a synchronization mechanism for the slide rail, wherein,

supporting irons are respectively arranged on the two transverse sides of the drawing part so as to connect the pair of movable sliding rails; or

The pair of movable slide rails are respectively arranged at two transverse sides of the drawing part and are configured to be directly connected and fixed with the drawing part through a connecting piece.

The invention also provides a refrigerator, which comprises a box body limited with a storage space, a drawing part arranged in the box body, a slide rail according to any one of the above parts and a synchronous mechanism for the slide rail, wherein,

the sliding rail bracket is fixed in the box body;

the drawing component is arranged on the movable sliding rail and is configured to be controlled to move horizontally into or out of the storage space.

The synchronous mechanism for the sliding rails can adjust the position relation between the gears on the two sides for synchronization and the corresponding racks thereof at the pushing initial position of the sliding rails, so that the gears on the two sides are always kept in a concentric state in the pushing process of the sliding rails, and the synchronous operation of the sliding rails on the two sides is ensured.

Further, the synchronizing mechanism of the invention enables the gear and the rack which are respectively connected with the movable sliding rail and the sliding rail to be not meshed after the movable sliding rail is pulled out from the sliding rail bracket, therefore, when the movable sliding rail is pushed into the sliding rail bracket again, the meshing or contact position of the gear and the rack on one side can be adjusted along with the position of the gear and the rack on the other side, and the synchronizing mechanism realizes the self-adjustment of meshing positioning.

Further, the synchronizing mechanism simplifies the assembly of the connecting rod and the connecting shaft sleeve through the stop snap ring, is suitable for sliding rails with different intervals, and enhances the flexibility and the practicability of the synchronizing mechanism for the sliding rails.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic perspective view of a slide rail and synchronization mechanism according to one embodiment of the present invention;

FIG. 2 is a schematic partial enlarged view of the slide rail and synchronization mechanism shown in FIG. 1;

FIG. 3 is a schematic perspective view of one side slide rail according to one embodiment of the present invention;

FIG. 4 is a schematic exploded view of a synchronization mechanism according to one embodiment of the invention;

FIG. 5 is a schematic perspective view of a rack in accordance with one embodiment of the present invention;

FIG. 6 is a partial schematic cross-sectional view of a synchronization mechanism according to one embodiment of the invention;

FIG. 7 is a partial schematic cross-sectional view of a synchronization mechanism according to another embodiment of the invention;

FIG. 8 is a schematic side view of a holder and support sleeve according to one embodiment of the invention;

FIG. 9 is a schematic cross-sectional view taken along section line A-A in FIG. 8;

FIG. 10 is a schematic block diagram of a drawer according to one embodiment of the invention;

fig. 11 is a partial schematic structural view of a refrigerator according to one embodiment of the present invention;

fig. 12 is a partial schematic structural view of a refrigerator according to one embodiment of the present invention in another state.

Detailed Description

FIG. 1 is a schematic perspective view of a slide rail and synchronization mechanism according to one embodiment of the invention. Fig. 2 is a schematic partial enlarged view of the slide rail and the synchronization mechanism shown in fig. 1. The slide rail may generally include a pair of slide rail brackets 101 disposed in parallel and a pair of moving slide rails 102 disposed on the pair of slide rail brackets 101. The synchronization mechanism may include a pair of gears 201, a link 203 connecting the pair of gears 201, and a pair of racks 202. Specifically, a pair of gears 201 may be rotatably disposed at opposite inner rear portions of the pair of movable rails 102, respectively. The link 203 may be disposed to span between the slide rails, and both ends of the link 203 are respectively connected to the pair of gears 201 to rotate the pair of gears 201 synchronously. The pair of racks 202 may be respectively disposed on the pair of rail brackets 101 and configured to respectively engage with the pair of gears 201.

FIG. 3 is a schematic perspective view of one side slide rail according to one embodiment of the present invention. Referring to fig. 3, the installation direction of the pair of racks 202 may be configured to coincide with the push-pull direction of the movable rail 102 with respect to the rail bracket 101, and the length of the racks 202 corresponds to the push-pull stroke of the rail.

FIG. 4 is a schematic exploded view of a synchronization mechanism according to one embodiment of the invention.

Referring to fig. 4, an inner side of the gear 201 facing away from the moving rail 102 is formed with a coupling boss 201f to allow the link 203 to be inserted into and coupled to the coupling boss 201 f.

Note that the "inner side" appearing above and the "outer side" which will appear later are both relative positions. Specifically, the slide rail generally has a transverse central symmetry plane, and the pair of slide rail brackets 101 and the pair of movable slide rails 102 are both configured to be symmetrical with respect to the central symmetry plane, and one slide rail bracket 101 and one movable slide rail 102 are respectively arranged on both sides of the central symmetry plane. Thus, unless otherwise specified, the side of each component of the synchronizing mechanism facing or closer to the transverse central symmetry plane is the "inside" and the side facing away or farther from the transverse central symmetry plane is the "outside". These terms are only used to facilitate the description and understanding of the technical solutions of the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be considered as limiting the present invention.

Fig. 5 is a schematic perspective view of a rack 202 according to one embodiment of the present invention. Specifically, the front ends of the pair of racks 202 in the pull-out direction in the synchronization mechanism of the present invention are each provided with a toothless section 202a to disengage the pair of gears 201 from the pair of racks 202 at the toothless section 202a when the moving rail 102 is pulled out forward to the limit position relative to the rail bracket 101. That is, in the pull-out limit state, the pinion 201 can move in a plurality of directions relative to the rack 202 without being restricted by the meshing of the teeth.

In the prior art, when the movable slide rail 102 is pulled out and then pushed back to the slide rail bracket 101, the transverse distance between the pair of movable slide rails 102 is generally large, so that the phenomenon that the slide rails on the two sides are not synchronous is likely to occur. In the prior art, the sliding rail is synchronized by adding a combination of a gear 201 and a rack 202 which are always meshed to the sliding rail, but in this case, if the meshing positions of the gear 201 and the rack 202 on one side and the gear 201 and the rack 202 on the other side do not correspond to each other, the asynchronous phenomenon of the sliding rail is increased, and the sliding rail is damaged.

The synchronization mechanism of the present invention enables the gear 201 and the rack 202 respectively connected to the movable sliding rail 102 to be not engaged after the movable sliding rail is pulled out from the sliding rail bracket 101, and the rack 202 does not limit the rotation or moving direction of the gear 201. Thus, when the movable rail 102 is pushed into the rail bracket 101 again, the meshing or contact position of the rack 202 of one side gear 201 can be adjusted according to the position of the rack 202 of the other side gear 201. More precisely, the meshing or contact positions of the racks 202 of the two side gears 201 can be mutually influenced and adjusted, so that the synchronous mechanism realizes meshing positioning self-adjustment.

Specifically, if the slide rail tilts due to uneven thrust, the gear 201 on one side of the movable slide rail 102 is engaged with the rack 202 before the gear 201 on the other side of the movable slide rail 102, and the rack 202 on the engaged side generates a certain resistance to prevent the gear 201 from continuing to rotate when the rotation direction of the gear is deviated. At this time, since the other side gear 201 is not engaged with the rack 202, resistance is not applied, so that it is easier to continue the rotation until the other side gear 201 is also engaged with the rack 202 and is located at the same lateral position as the gear 201 that has been engaged so far. Under the condition that the two gears 201 which are self-adjusted and located at the same transverse position can be in a meshing state, the two gears 201 can synchronously rotate to the rear end of the rack 202 through the connecting rod 203, so that the sliding synchronism of the sliding rails on the two sides is ensured, and the problem that the meshing positions of the gears 201 and the racks 202 cannot correspond to each other due to the fact that the sliding rails on the two sides are out of synchronization at the pushing initial position (namely, the pulling-out limit position) is avoided.

The synchronous mechanism for the slide rail can adjust the position relation between the gears 201 on the two sides for synchronization and the corresponding racks 202 at the pushing initial position of the slide rail, so that the gears 201 on the two sides are always in a concentric state in the pushing process of the slide rail, and the synchronous operation of the slide rails on the two sides is ensured.

In some embodiments of the present invention, the rear ends of the pair of racks 202 in the pull-out direction are each provided with a toothless section 202a so that the pair of gears 201 are disengaged from the pair of racks 202 at the toothless section 202a when the moving slide rail 102 is pushed rearward relative to the slide rail bracket 101 to the limit position. That is, both the front and rear ends of each rack 202 have the toothless sections 202 a. The trailing toothless section 202a functions similarly to the leading toothless section 202 a.

Specifically, in the synchronization mechanism of the prior art, when the sliding door body (or the drawer front cover, etc.) guided to move by the sliding rail is inclined due to the asynchronous sliding rail, the movable sliding rail 102 may still slide to the rear end of the sliding rail bracket 101 under the pushing of a large external force in some cases. However, since the drawing door body is always in an inclined state, when the door body on one side is restored to the closing position, the other side door body cannot be completely closed due to the staggered teeth of the gear 201 and the rack 202 and the interference force of the closed door body on one side. That is, the door body on one side is attached to the box body 1, and a gap exists between the door body on the other side and the box body 1.

Different from the prior art, the toothless section 202a at the rear end of the rack 202 of the synchronizing mechanism of the invention can allow the gear 201 to move or rotate freely, namely, the contact resistance at one side of the closed door body can almost unhindered promote the gear 201 at one side of the open door body to move to a correct meshing position, thereby adjusting the gears 201 at two sides to be at the same transverse position and ensuring that the doors at two sides can be normally closed.

In some embodiments of the present invention, the toothless section 202a may be configured to allow the gear 201 to rotate freely when the projection of the center of rotation of the gear 201 on the rack 202 is located in the middle of the toothless section 202 a. That is, the toothless section 202a has a space that allows the gear 201 to freely rotate in situ, so that the gear 201 achieves the misalignment adjustment in the lateral direction by the free rotation.

FIG. 6 is a partial schematic cross-sectional view of a synchronization mechanism according to one embodiment of the invention. FIG. 7 is a partial schematic cross-sectional view of a synchronization mechanism according to another embodiment of the invention.

In some embodiments of the present invention, a connection sleeve 201f is formed on the inner side of the gear 201 facing away from the moving slide 102 to allow the link 203 to be inserted and connected to the connection sleeve 201 f. Further, both ends of the link 203 are configured to have a non-circular cross-section. At least a part of the inner shaft hole of the connecting boss 201f is configured to have a non-circular cross section to prevent the link 203 from rotating relative to the connecting boss 201f, thereby ensuring that the gears 201 on both sides of the link 203 always rotate synchronously.

Referring to fig. 4-6, in some embodiments of the invention, the synchronization mechanism further comprises a stop collar 500. The stopper snap ring 500 may be configured in a ring shape having an opening to be snapped on the outside of the coupling boss 201 f. Stop collar 500 may also have a stop rod 501. Correspondingly, a through hole 201g is formed in the shaft sleeve wall of the connecting shaft sleeve 201f of at least one gear 201. The stopper rod 501 may be configured to extend from the snap ring inner ring surface toward the annular center of the stopper snap ring 500, and to be inserted into the through hole 201g when the stopper snap ring 500 is snapped to the coupling boss 201f, so as to limit the axial movement of the connection rod 203.

In this embodiment, the connecting sleeves 201f of the two gears 201 may have different lengths, that is, the connecting rod 203 may be inserted deeper into the connecting sleeve 201f of one gear 201, and the rod body thereof located in the connecting sleeve 201f of the other gear 201 may be shorter. Further, the through hole 201g may be provided at one side of the longer coupling boss 201 f.

The catch collar 500 and the connecting bushing 201f of the synchronizing mechanism of the present invention simplify the assembly of the connecting rod 203 with the two gears 201, especially if the distance between the two gears 201 is already fixed. Specifically, during assembly, the link 203 may be inserted into the longer coupling boss 201f and moved to the side until the other end of the link 203 moves to the inside of the opening of the shorter coupling boss 201 f. When the other end of the link rod 203 is opposite to the opening of the shorter connecting sleeve 201f, the link rod 203 can move to the other side until it is inserted into the end of the shorter connecting sleeve 201f and completely interferes with the side gear 201. At this time, the stopper snap ring 500 is snapped on the longer connecting shaft sleeve 201f to prevent the connecting rod 203 from moving to the longer connecting shaft sleeve 201f, thereby realizing the axial positioning of the connecting rod 203.

Further, in some embodiments of the present invention, the connecting sleeve 201f may be formed with a plurality of through holes 201g at different positions to accommodate different fixed distances between the two gears 201.

The synchronizing mechanism of the invention simplifies the assembly of the connecting rod 203 and the connecting shaft sleeve 201f through the stop snap ring 500, is suitable for sliding rails with different intervals, and enhances the flexibility and the practicability of the synchronizing mechanism for the sliding rails.

Fig. 8 is a schematic side view of the holder 300 and the support sleeve 400 according to one embodiment of the present invention. Fig. 9 is a schematic cross-sectional view taken along a sectional line a-a in fig. 8.

Referring to fig. 4, 8 and 9, in some embodiments of the invention, the synchronization mechanism further comprises: a pair of holders 300 and a pair of support bosses 400. The pair of fixing seats 300 may be respectively fixed to opposite inner rear portions of the pair of movable rails 102. The pair of support bosses 400 may be respectively installed on the pair of holders 300 to be disposed such that central axes thereof are respectively perpendicular to the pair of holders 300. Each support sleeve 400 may have a first end 401 facing toward the corresponding anchor block 300 and a second end 402 facing away from the corresponding anchor block 300. That is, each gear 201 is rotatably mounted on a supporting shaft sleeve 400, and is mounted on a fixed seat 300 through the supporting shaft sleeve 400, and is further mounted on a movable slide 102 through the fixed seat 300.

In some embodiments of the present invention, each of the fixing bases 300 has an accommodating hole 301, and at least a portion of an edge of the accommodating hole 301 is provided with a shielding portion 301b, and the shielding portion 301b is configured to extend from a portion of the edge to an inside of the accommodating hole 301 inside the fixing base 300, so as to partially accommodate the hole 301. The first end 401 of each supporting shaft sleeve 400 is detachably clamped in the receiving hole 301 of the corresponding fixed seat 300, and the second end 402 is rotatably connected with the corresponding gear 201.

The gear 201 of the present invention is indirectly connected with the movable slide rail 102 through the support bushing 400 and the fixing base 300, so that each component can be separately manufactured, and the manufacturing process is simplified. In particular, since the final step of the installation of the gear 201 can be realized by the fixing base 300 through any common connecting piece, the flexibility of the installation position of the gear 201 is enhanced, and the synchronization mechanism of the invention is suitable for various sliding rails. In addition, compared with the method of directly forming a sleeve for mounting the gear 201, the movable slide rail 102 which only needs to be connected with the fixed seat 300 of the invention has greatly reduced requirements on the strength of the material used by the movable slide rail 102, so that the manufacturing cost can be greatly reduced, and a manufacturer has a wider selection range when manufacturing and selecting the material for the slide rail.

In some embodiments of the present invention, the receiving hole 301 is configured as an elongated square hole, and a front end hole wall of the square hole along the pulling direction and a part of an upper end hole wall and a part of a lower end hole wall connected to the front end hole wall are configured to extend from a plane where the receiving hole 301 is located toward the inside of the fixing base 300 to form a three-sided closed stop wall 301 a. Further, the extending ends of the stopping walls 301a formed by extending a part of the upper end hole wall and a part of the lower end hole wall are bent and extended towards each other to form two opposite shielding portions 301b inside the fixing base 300.

That is, the supporting shaft sleeve 400 of the present invention can be inserted into and snap-fixed to the fixing base 300 without an additional connecting member, and is fixed to the movable sliding rail 102 through the fixing base 300, thereby simplifying the assembly of the synchronization mechanism.

In some embodiments of the present invention, the first end 401 of the support sleeve 400 is externally square-stepped and has a bottom plate portion 401a and a connection portion 401b located inside the bottom plate portion 401 a. The first end 401 may be configured such that when the bottom plate portion 401a is completely inserted into at least a portion of the receiving hole 301, the bottom plate portion 401a and the connecting portion 401b respectively abut against any of the shielding portions 301b along two directions perpendicular to each other. That is, after the first end 401 of the support sleeve 400 is inserted into the receiving hole 301, the stepped bottom plate portion 401a and the connecting portion 401b thereof may be simultaneously restricted by the blocking portion 301b in two perpendicular directions to completely lock the bottom plate portion 401a in the receiving hole 301.

Further, the supporting sleeve 400 may be configured such that the end surface of the second end 402 close to the first end 401 has a size larger than the cross section of the connecting portion 401b, so that the bottom plate portion 401a and the end surface of the second end 402 close to the first end 401 are respectively clamped at two sides of the shielding portion 301b, and the connecting portion 401b is also abutted against the shielding portion 301b in the other direction, thereby further enhancing the clamping strength of the supporting sleeve 400 and the fixing base 300 and preventing the bottom plate portion 401a from being separated from the accommodating hole 301 in the direction substantially perpendicular to the fixing base 300.

In some embodiments of the present invention, an outer side surface of the shielding portion 301b facing the receiving hole 301 may be in the same plane as an inner side surface of the fixing base 300. That is, the shielding portion 301b may be configured to just cover the inner side surface of the receiving hole 301, so that the bottom plate portion 401a inserted into the receiving hole 301 and the fixing base 300 form a flat plate surface, so that the peripheral side of the bottom plate is contacted and abutted against the fixing base 300, the connection strength between the supporting shaft sleeve 400 and the fixing base 300 is enhanced, and the fixing mounting of the supporting shaft sleeve 400 and the fixing base 300 is more compact.

In some embodiments of the present invention, the rear portion of the square hole along the pulling direction is formed with an interference portion 301c capable of moving under force and releasing the force from being resettable, and the interference portion 301c is configured to extend from the rear end hole wall to the rear of the stop wall 301a and to incline towards the inner side of the fixing base 300. The extended end of the interference portion 301c bends toward the outside of the fixing base 300 and continues to extend to the interface between the fixing base 300 and the movable slide rail 102, so as to form an interference end penetrating through the accommodating hole 301.

Further, the interference portion 301c is configured to be forced to move toward the fixing base 300 into the plane of the receiving hole 301 to allow the bottom plate portion 401a to be inserted into the receiving hole 301 from the back to the front, and after the bottom plate portion 401a is completely inserted into the receiving hole 301, the interference portion can be reset and the interference end can be restored to be located behind the blocking wall 301a to prevent the bottom plate portion 401a from being separated from the receiving hole 301, so as to prevent the bottom plate portion 401a from being separated from the receiving hole 301 along a direction substantially parallel to the fixing base 300.

In some embodiments of the invention, the exterior of the second end 402 of the support sleeve 400 is formed with an annular boss 403. An annular cavity 201a is formed on the outer side of the gear 201 facing the movable sliding rail 102, and a plurality of hooks 201c are formed on the bottom 201b of the annular cavity 201a and configured to be rotatably engaged with the annular boss 403, so as to be rotatably mounted on the movable sliding rail 102 through the supporting shaft sleeve 400 fixed on the fixed seat 300. Specifically, the hooks 201c are each located on an imaginary circular ring concentric with the annular recess 201 a.

The second end 402 of the supporting sleeve 400 can be inserted into the annular cavity 201a, so that the annular boss 403 thereof is engaged with the hook 201c, that is, the second end 402 is wholly or at least mostly located inside the annular cavity 201a, so as to protect the connecting portion 401b between the supporting sleeve 400 and the gear 201, and the distance between the gear 201 and the fixing base 300 can be shortened, so as to reduce the torque applied to the supporting sleeve 400. Further, the annular boss 403 of the second end 402 of the support boss 400 may be configured such that the outer circumferential side surface thereof has a certain inclination angle. Specifically, the cross-sectional area of the annular boss 403 close to the cavity bottom 201b is smaller than that of the annular boss 403 far from the cavity bottom 201b, so that the hook 201c can be gradually bent outwards along the peripheral side surface of the annular boss 403 in the clamping process and reset after the clamping is completed, and the hook 201c is prevented from being separated from the annular boss 403 without external force.

Accordingly, the hooks 201c of the gear 201 may also be configured such that the head of the hook 201c has a certain inclination angle with the contact surface of the annular boss 403. Specifically, the contact surfaces may be arranged in parallel with the outer peripheral side surface of the annular boss 403, that is, in parallel with each other at the boundary line between the two and any cross-sectional plane passing through the rotational center axis. Thereby, the resistance of the hook 201c in the process of being clamped to the annular boss 403 is further reduced.

In some embodiments of the present invention, the number of the hooks 201c is four, and the hooks are arranged to be evenly spaced on the imaginary circle. The hook 201c is configured to extend perpendicular to the cavity bottom 201b to no more than the outer end face of the gear 201, and the end of the hook 201c is bent toward the center of the imaginary circle to engage with the boss face of the annular boss 403 toward the first end 401, thereby restricting the axial movement of the gear 201 relative to the support boss 400.

In some embodiments of the invention, the interior of the support sleeve 400 is annularly stepped and configured such that the second sleeve bore 4020 located interior to the second end 402 is larger than the first sleeve bore 4010 located interior to the first end 401 to form an interior land 4030 at the interior interface of the first end 401 and the second end 402.

Further, a shaft center column 201d is formed on the cavity bottom 201b of the gear 201, is arranged in the imaginary circular ring concentrically with the imaginary circular ring, and has an outer diameter equal to the inner diameter of the second sleeve inner hole 4020 so as to be inserted into the second sleeve inner hole 4020 concentrically with the support sleeve 400, and the sizes of the two are matched to limit the radial movement of the shaft center column 201d after being inserted into the second sleeve inner hole 4020.

That is, the synchronization mechanism of the present invention realizes dual center positioning by the cooperation of the annular boss 403 and the hook 201c and the arrangement of the second bushing inner hole 4020 and the axial core pipe column 201d, so as to facilitate the assembly of the gear 201 and the support bushing 400, and the hook 201c has a certain elasticity, so that the position form is relatively flexible, and the over-positioning problem can be avoided.

In some embodiments of the invention, the second end 402 of the support sleeve 400 has a stop 404 protruding from an end surface of the annular boss 403 away from the support sleeve 400 and configured to abut the cavity bottom 201b of the annular cavity 201a after the axial stem 201d is inserted into the second sleeve bore 4020 to limit axial movement of the gear 201 relative to the support sleeve 400. The stopper 404 may be configured in a partial ring shape. Specifically, the two arc protrusions may be oppositely arranged, and one end surface of each arc protrusion close to the annular concave cavity 201a has a smaller cross-sectional area, so as to reduce a contact area with the cavity bottom 201b and reduce the resistance of the rotation of the gear 201.

In some embodiments of the invention, the internal boss 4030 may also limit axial movement of the gear 201 under certain circumstances. Specifically, axial leg 201d may be further configured to remain a distance from first sleeve bore 4010 after insertion into second sleeve bore 4020, i.e., without contacting inner boss 4030. Thus, when gear 201 is rotating normally, stem 201d does not contact inner boss 4030 to reduce the resistance to rotation of gear 201. When the position-limiting portion 404 and the cavity bottom 201b cannot effectively abut against each other, the axial core column 201d can abut against the inner boss 4030, so that the gear 201 is prevented from axially moving.

In some embodiments of the invention, the outer portion of the inner boss 4030 (substantially the connecting portion 401b of the first end 401) may substantially correspond to the shielding portion 301b of the fixing base 300. That is, the outer side of the inner boss 4030 may be configured to have a recess to engage with the shielding portion 301 b.

Fig. 10 is a schematic structural view of the drawer 10 according to one embodiment of the present invention. The invention also provides a drawing part 10 which is provided with the slide rail and the synchronous mechanism for the slide rail. In some embodiments of the present invention, support irons are respectively disposed at both lateral sides of the drawing member 10 to connect a pair of moving rails 102. In other embodiments of the present invention, a pair of movable rails 102 may be respectively disposed at both lateral sides of the drawing member 10, and configured to be directly connected and fixed with the drawing member 10 by a connecting member.

Fig. 11 is a partial schematic structural view of a refrigerator according to one embodiment of the present invention. Fig. 12 is a partial schematic structural view of a refrigerator according to one embodiment of the present invention in another state. The invention also provides a refrigerator, which comprises a refrigerator body 1 limited with a storage space and the drawing part 10. Specifically, the rail bracket 101 may be fixed inside the case 1. The drawing member 10 is mounted to the movable rail 102 and configured to be controlled to move horizontally into or out of the storage space.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A synchronizing mechanism for a slide rail, the slide rail including a pair of slide rail brackets arranged in parallel and a pair of movable slide rails arranged on the pair of slide rail brackets, the synchronizing mechanism comprising:

the pair of racks are respectively arranged on the pair of slide rail brackets and are respectively meshed with the pair of gears;

Each support shaft sleeve is provided with a first end facing the corresponding fixed seat and a second end departing from the corresponding fixed seat; wherein

the installation direction of the pair of racks is consistent with the push-pull direction of the movable slide rail relative to the slide rail bracket, and the length of the racks corresponds to the push-pull stroke of the slide rail;

the front ends of the racks in the pulling-out direction are provided with toothless sections, so that the gears are separated from the racks in the toothless sections when the movable sliding rail is pulled out forwards relative to the sliding rail bracket to the limit position; and

the interior of the support sleeve is annularly stepped and configured such that a second sleeve inner bore located inside the second end is larger than a first sleeve inner bore located inside the first end to form an interior boss at an interior intersection of the first and second ends;

an axial core pipe column is formed on the cavity bottom of the gear, and the axial core pipe column is configured to form a gap with the inner hole of the first shaft sleeve after being inserted into the inner hole of the second shaft sleeve;

the stop clamping ring is provided with a stop rod, the stop rod is configured to extend from the surface of the inner ring of the clamping ring towards the annular circle center of the stop clamping ring and is inserted into the through hole when the stop clamping ring is clamped on the connecting shaft sleeve so as to limit the axial movement of the connecting rod;

each fixing seat is provided with an accommodating hole, at least part of the edge of the accommodating hole is provided with a shielding part, and the shielding part is configured to extend from the part of the edge to the inside of the accommodating hole on the inner side of the fixing seat so as to shield part of the accommodating hole;

the accommodating hole is configured to be a long square hole, and the front end hole wall of the square hole along the pull-out direction and part of the upper end hole wall and part of the lower end hole wall connected with the front end hole wall are configured to extend from the plane of the accommodating hole to the inner side of the fixed seat so as to form a stop wall with three closed surfaces;

the extending tail ends of the stop walls formed by extending the parts of the upper end hole walls and the parts of the lower end hole walls are bent and extended oppositely, so that two opposite shielding parts are formed on the inner side of the fixed seat;

a collision part which can move under stress and can be reset after releasing the stress is formed at the rear part of the square hole along the pulling-out direction, and the collision part is configured to extend forwards from the hole wall at the rear end and obliquely towards the inner side of the fixed seat to the rear part of the stop wall;

the extending tail end of the interference part bends towards the outer side of the fixed seat and continues to extend to an interface of the fixed seat and the movable slide rail so as to form an interference end penetrating through the accommodating hole.

2. The synchronization mechanism as recited in claim 1,

both ends of the connecting rod are configured to have a non-circular cross-section; and is

3. The synchronization mechanism of claim 1, further comprising:

4. The synchronization mechanism as recited in claim 3,

the outer part of the first end of the supporting shaft sleeve is in a square step shape and is provided with a bottom plate part and a connecting part positioned on the inner side of the bottom plate part;

5. The synchronization mechanism as recited in claim 1,

the abutting part is configured to be capable of moving towards the fixed seat under the force to the plane of the accommodating hole so as to allow the bottom plate part to be inserted into the accommodating hole from back to front, and after the bottom plate part is completely embedded into the accommodating hole, the abutting part can reset and enables the abutting end to be restored to be positioned behind the stopping wall so as to prevent the bottom plate part from being separated from the accommodating hole.

6. The synchronization mechanism as recited in claim 3,

an annular boss is formed outside the second end of the support shaft sleeve;

an annular concave cavity is formed on the outer side of the gear, facing the movable slide rail, a plurality of clamping hooks are formed on the cavity bottom of the annular concave cavity and are configured to be rotatably clamped with the annular boss, so that the gear is rotatably mounted on the movable slide rail through the supporting shaft sleeve fixed on the fixed seat; and

7. A pull-out part fitted with a slide rail according to any one of claims 1 to 6 and a synchronization mechanism for the slide rail, wherein,

8. A refrigerator comprising a cabinet defining a storage space, a drawing member provided in the cabinet, and a slide rail according to any one of claims 1 to 6 and a synchronizing mechanism for the slide rail, wherein,

the sliding rail bracket is fixed in the box body;