Abstract
Disclosed is an unfolding and locking structure for a sliding rail, wherein the sliding rail includes an outer rail, a middle rail and an inner rail, the middle rail and the inner rail are locked and connected after unfolding via a locking mechanism, and an unlocking mechanism is provided on an inner side of the inner rail; the locking mechanism includes an inner rail unfolding lock and a baffle, wherein the baffle protrudes from the middle rail and is provided vertically towards the inner rail, one side of the middle of the inner rail unfolding lock is provided with a rectangular clamping groove, the other side of the middle is provided with a resilient member, one end of the inner rail unfolding lock is resiliently and rotatably connected to the inner rail.
Claims
1. An unfolding and locking structure for a sliding rail, the sliding rail comprising an outer rail, a middle rail and an inner rail connected successively, wherein an outer side end of the middle rail and an inner side end of the inner rail are locked and connected via a locking mechanism after the unfolding, and an inner side of the inner rail which is provided adjacent to the middle rail is provided with an unlocking mechanism for releasing a locked state of the middle rail and the inner rail; the locking mechanism comprises an inner rail unfolding lock and a baffle; the baffle is provided at an outer side end of the middle rail, and protrudes from the middle rail and is provided vertically towards the inner rail, one side of the middle of the inner rail unfolding lock is provided with a rectangular clamping groove clamped with the baffle, a limiting groove is provided in the middle to limit a rotation angle of the inner rail unfolding lock, a resilient member is provided at the other side of the middle to drive the inner rail unfolding lock to move towards the baffle, one end of the inner rail unfolding lock is connected to the inner side end of the inner rail in a resilient rotation manner via a pin shaft and a resilient member, and the middle rail is locked with the inner rail when the baffle is clamped in the clamping groove; the unlocking mechanism comprises a push rod slidably connected to the inner rail, one end of the push rod cooperates with a driving part of the inner rail unfolding lock, and the other end extends to the outer side end of the inner rail; the push rod pushes the driving part to rotate the inner rail unfolding lock towards the resilient member; and the baffle is disengaged from the clamping groove to unlock the middle rail and the inner rail.
2. The unfolding and locking structure for a sliding rail according to claim 1, wherein the resilient member is a torsion spring, one end of the resilient member is sleeved on the pin, and the other end of the resilient member is provided with two torsion rods, wherein one torsion rod abuts against a side wall of the inner rail, and the other torsion rod abuts against the inner rail unfolding lock; the inner rail unfolding lock is provided with a limiting plate, the limiting plate and a side surface of the inner rail unfolding lock adjacent to the inner rail form a step, and the torsion rod abutting against the inner rail unfolding lock on the resilient member is provided in the step.
3. The unfolding and locking structure for a sliding rail according to claim 1, wherein the driving part is provided with a first bevel, one end of the push rod cooperating with the driving part is provided with a second bevel provided opposite to the first bevel which cooperates with the second bevel, and the second bevel is provided with a plurality of arc-shaped bosses.
4. The unfolding and locking structure for a sliding rail according to claim 3, wherein a guide bevel is provided on one side of the clamping groove adjacent to the driving part, and the guide bevel is connected to the first bevel.
5. The unfolding and locking structure for a sliding rail according to claim 1, wherein the unlocking mechanism further comprises an inner rail sliding member provided at an outer side end of the inner rail, wherein the inner rail sliding member is slidably connected to the inner rail and comprises a main board and a pushing part protruding from the main board, and the pushing part is provided in the middle of the main board; one end of the main board adjacent to the push rod is provided with a T-shaped groove, one end of the push rod adjacent to the inner rail sliding member is provided with a T-shaped connection part embedded in the T-shaped groove, and the push rod is connected to the inner rail sliding member via the T-shaped connection part.
6. The unfolding and locking structure for a sliding rail according to claim 5, wherein the push rod is provided with a plurality of first waist-shaped sliding holes provided along a sliding direction of the push rod, and the push rod is slidably connected to the inner rail via rivets inserted into the first waist-shaped sliding holes; the main board is further provided with a plurality of second waist-shaped sliding holes located at two sides of the pushing part, the inner rail sliding member is slidably connected to the inner rail via rivets inserted into the second waist-shaped sliding holes, and the two sides of the middle of the second waist-shaped sliding holes are provided with trapezoidal bosses for limiting.
7. The unfolding and locking structure for a sliding rail according to claim 5, wherein the unlocking mechanism further comprises a resilient piece provided at the outer side end of the inner rail, wherein the resilient piece comprises a hinge part provided at the middle of the resilient piece, a pressing plate and a resilient plate provided at two sides of the hinge part, wherein the hinge part is hinged to the inner rail, the pressing plate is provided at an included angle with the resilient plate, and the resilient plate is inserted into the pushing part of the inner rail sliding member and is a resilient inclined plate cooperating with the pushing part.
8. The unfolding and locking structure for a sliding rail according to claim 7, wherein the unlocking mechanism further comprises a return spring and a spring seat, wherein the spring seat is fixed to an inner side surface of the inner rail, the spring seat is provided with a spring groove provided in parallel with the push rod, the return spring is provided in the spring groove, and an inner side end of the return spring is connected to a side wall of the spring groove, and an outer side end of the return spring is connected to a spring connection part on the push rod.
9. The unfolding and locking structure for a sliding rail according to claim 8, wherein the spring seat is made of plastic, and a sliding table provided parallel to the spring groove is provided on the spring seat; a sliding groove connected to the spring connection part is provided on a side surface of the push rod, and the sliding groove is slidably connected to the sliding table.
10. The unfolding and locking structure for a sliding rail according to claim 1, wherein an unlocking handle is further provided on the inner rail unfolding lock, and the unlocking handle is connected to the driving part and extends towards the push rod.
Description
BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to explain the technical solutions in the embodiments or the prior art of the present invention more clearly, a brief description will be given below with reference to the accompanying drawings which are used in the description of the embodiments or the prior art, and it is obvious that the drawings in the description below are merely some embodiments specified in the present invention, and it would have been obvious for a person skilled in the art to obtain other drawings according to these drawings without involving any inventive effort.
[0018] FIG. 1 is an exploded view of an unfolding and locking structure for a sliding rail according to the present invention;
[0019] FIG. 2 is a partially enlarged schematic diagram of A in FIG. 1;
[0020] FIG. 3 is a partially enlarged schematic diagram of B in FIG. 1;
[0021] FIG. 4 is a schematic structural diagram showing an unfolding and locking structure for a sliding rail according to the present invention;
[0022] FIG. 5 is a schematic diagram showing an inner side of an inner rail of an unfolding and locking structure for a sliding rail according to the present invention; and
[0023] FIG. 6 is a schematic diagram showing connection between an inner rail sliding member and a resilient piece in an unfolding and locking structure for a sliding rail according to the present invention.
[0024] In the drawings: 1. outer rail; 2. middle rail; 21. baffle; 3. inner rail; [0025] 4. locking mechanism; 41. inner rail unfolding lock; 411. clamping groove; 412. driving part; 413. limiting plate; 414. guide bevel; 415. unlocking handle; 416. limiting groove; 42. resilient member; [0026] 5. unlocking mechanism; 51. push rod; 511. arc-shaped boss; 512. T-shaped connection part; 513. first waist-shaped sliding hole; 514. spring connection part; 515. sliding groove; 52. inner rail sliding member; 521. main board; 522. pushing part; 523. T-shaped groove; 524. second waist-shaped sliding hole; 525. trapezoidal boss; 53. resilient piece; 531. hinge part; 532. pressing plate; 533. resilient plate; 54. return spring; 55. spring seat; 551. sliding table.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the present invention are shown. It is to be understood that the embodiments described are only a few, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without inventive effort fall within the scope of the present invention.
Embodiment 1
[0028] As shown in FIGS. 1-6, an unfolding and locking structure for a sliding rail includes an outer rail 1, a middle rail 2 and an inner rail 3 connected successively, where an outer side end of the middle rail 2 and an inner side end of the inner rail 3 are locked and connected via a locking mechanism 4 after the unfolding, i.e., a locking mechanism is provided at the unfolding connection of the inner rail 3 and the middle rail 2, and an inner side of the inner rail 3 which is provided adjacent to the middle rail 2 is provided with an unlocking mechanism 5 for releasing a locked state of the middle rail 2 and the inner rail 3; the locking mechanism 4 includes an inner rail unfolding lock 41 and a baffle 21, the baffle 21 is provided at an outer side end of the middle rail 2, and protrudes from the middle rail 2 and is provided vertically towards the inner rail 3, one side of the middle of the inner rail unfolding lock 41 is provided with a rectangular clamping groove 411 clamped with the baffle 21, a limiting groove 416 is provided in the middle to limit a rotation angle of the inner rail unfolding lock 41, and a resilient member 42 is provided at the other side of the middle to drive the inner rail unfolding lock 41 to move towards the baffle 21, one end of the inner rail unfolding lock 41 is connected to the inner side end of the inner rail 3 via a pin shaft and a resilient member 42, and the middle rail 2 is locked with the inner rail 3 when the baffle 21 is clamped in the clamping groove 411, the baffle 21 is a rectangular flat plate cooperating with the clamping groove 411, and the baffle 21 will not disengage from the clamping groove when receiving a force in a moving direction of the sliding rail; the unlocking mechanism 5 includes a push rod 51 slidably connected to the inner rail 3, one end of the push rod 51 cooperates with a driving part 412 of the inner rail unfolding lock 41, and the other end extends to the outer side end of the inner rail 3 and pushes the push rod 51 inwards at the outer side end of the inner rail 3; the push rod 51 pushes the driving part 412 to rotate the inner rail unfolding lock 41 towards the resilient member 42; and the baffle 21 is disengaged from the clamping groove 411 to unlock the middle rail 2 and the inner rail 3. After both the middle rail 2 and the inner rail 3 are unfolded, the baffle 21 is clamped in the clamping groove 411 of the inner rail unfolding lock 41, and the inner side end of the inner rail 3 is locked with the outer side end of the middle rail 2, and the baffle 21 is stably locked with the clamping groove 411, and cannot be disengaged from the clamping groove when subjected to a force in the sliding rail moving direction, resulting in high safety; when the inner rail 3 needs to be closed, the push rod 51 is pushed, and the push rod 51 cooperates with the driving part 412 to push the inner rail unfolding lock 41 to rotate towards the resilient member 42, so that the baffle 21 is disengaged from the clamping groove 411 to release the locking between the middle rail 2 and the inner rail 3, and the push rod 51 is a long rod provided along the inner side surface of the inner rail 3, which is not easily touched by mistake, and the push rod 51 also extends to the outer side end of the inner rail 3, which can facilitate the unlocking operation.
[0029] As shown in FIGS. 1-5, in the above-mentioned structure, the unlocking mechanism 5 further includes an inner rail sliding member 52 provided at an outer side end of the inner rail 3, where the inner rail sliding member 52 is slidably connected to the inner rail 3, and includes a main board 521 and a pushing part 522 protruding from the main board 521, and the pushing part 522 is provided in the middle of the main board 521; one end of the main board 521 adjacent to the push rod 51 is provided with a T-shaped groove 523, one end of the push rod 51 adjacent to the inner rail sliding member 52 is provided with a T-shaped connection part 512 embedded in the T-shaped groove 523, and the push rod 51 is connected to the inner rail sliding member 52 via the T-shaped connection part 512. When unlocking, the push rod 51 is moved by pushing the pushing part 52, so that the operation is more convenient.
[0030] As shown in FIGS. 1, 4 and 5, the push rod 51 is provided with a plurality of first waist-shaped sliding holes 513 provided along a sliding direction of the push rod 51, and the push rod 51 is slidably connected to the inner rail 3 via rivets inserted into the first waist-shaped sliding holes 513; the main board 521 is further provided with a plurality of second waist-shaped sliding holes 524 located at two sides of the pushing part 522, the inner rail sliding member 52 is slidably connected to the inner rail 3 via rivets inserted into the second waist-shaped sliding holes 524, and the two sides of the middle of the second waist-shaped sliding holes 524 are provided with trapezoidal bosses 525 for limiting. The pushing part 52 is pushed with a certain force, so that the rivets overcomes a problem related with the limiting function of the trapezoid boss 525, slides over the trapezoid bevel of the trapezoid boss 525 to the other section of the second waist-shaped sliding hole 524, thereby pushing the push rod 51 to move; the first waist-shaped sliding hole 513 and the second waist-shaped sliding hole 524 can limit a moving stroke of the push rod 51 and ensure the cooperation of the push rod 51 with the driving part 412, and the trapezoidal boss 525 can prevent the pushing part 522 from being mistakenly touched to move the inner rail sliding member 52 to exert a certain locking effect.
[0031] In addition, as shown in FIGS. 1 and 3-5, the unlocking mechanism 5 further includes a resilient piece 53 provided at the outer side end of the inner rail 3, where the resilient piece 53 includes a hinge part 531 provided at the middle of the resilient piece 53, a pressing plate 532 and a resilient plate 533 provided at two sides of the hinge part 531, where the hinge part 531 is hinged to the inner rail 3, the pressing plate 532 is provided at an included angle with the resilient plate 533, and the resilient plate 533 is inserted into the pushing part 522 of the inner rail sliding member 52 and is a resilient inclined plate cooperating with the pushing part 522. When unlocking, pressing the pressing plate 532 to rotate the resilient plate 533 toward the pushing part 522 of the inner rail sliding member, so that the pushing part 522 slides in a direction away from the resilient piece 53, further improving the convenience of operation; in addition, the pressing direction is perpendicular to the moving direction of the push rod 51, so that the locking performance of the locking mechanism is not affected by the action of the unlocking mechanism due to a false collision with the inner rail 3.
Embodiment 2
[0032] On the basis of the structure of Embodiment 1, as shown in FIGS. 1, 2, 4 and 5, the resilient member 42 is a torsion spring, one end of the resilient member 42 is sleeved on the pin, and the other end is provided with two torsion rods, where one torsion rod abuts against a side wall of the inner rail 3, and the other torsion rod abuts against the inner rail unfolding lock 41; the inner rail unfolding lock 41 is provided with a limiting plate 413, the limiting plate 413 and the side surface of the inner rail unfolding lock 41 adjacent to the inner rail 3 form a step, and the torsion rod abutting against the inner rail unfolding lock 41 on the resilient member 42 is provided in the step, ensuring the connection between the resilient member 42 and the inner rail unfolding lock 41. In addition, by providing the resilient member 42, the baffle 21 is clamped at the bottom of the clamping groove 411 without increasing the applied force, so that the inner rail 3 and the middle rail 2 are securely locked.
[0033] As shown in FIG. 1, the driving part 412 is provided with a first bevel, one end of the push rod 51 cooperating with the driving part 412 is provided with a second bevel provided opposite to the first bevel which cooperates with the second bevel, and the second bevel is provided with a plurality of arc-shaped bosses 511. The wedge-shaped cooperation between the first bevel and the second bevel enables the push rod 51 to move towards the inner side end to drive the inner rail unfolding lock 41 to rotate towards the resilient member 42 against the resilient force of the resilient member 42, and the clamping groove 411 is disengaged from the baffle 21 to achieve unlocking; in addition, a plurality of arc-shaped bosses 511 are provided on the first bevel and the second bevel, so that the driving friction between the first bevel and the second bevel is reduced and the operation is more labor-saving. In addition, a guide bevel 414 is provided on one side of the clamping groove 411 adjacent to the driving part 412, and the guide bevel 414 is connected to the first bevel, and this arrangement can facilitate the baffle 21 to accurately spring into the clamping groove 411 when the inner rail 3 is unfolded.
[0034] As shown in FIGS. 1, 2, 4 and 5, the unlocking mechanism 5 further includes a return spring 54 and a spring seat 55, where the spring seat 55 is fixed to an inner side surface of the inner rail 3, the spring seat 55 is provided with a spring groove provided in parallel with the push rod 51, the return spring 54 is provided in the spring groove, an inner side end of the return spring 54 is connected to a side wall of the spring groove, and an outer side end of the return spring is connected to a spring connection part 514 on the push rod 51. By providing the return spring 54, the push rod 51 can be automatically returned after the push rod 51 is unlocked.
[0035] In the above-mentioned structure, as shown in FIG. 2, the spring seat 55 is provided with a sliding table 551 provided parallel to the spring groove, a side face of the push rod 51 is provided with a sliding groove 515 connected to the spring connection part 514, the sliding groove 515 is slidably connected to the sliding table 551, and the sliding groove 515 and the sliding table 551 are provided to guide the movement of the push rod 51, so that the movement direction of the push rod 51 is accurate and the stability of the unlocking action is ensured; moreover, the spring seat 55 is made of plastic, and the push rod 51 is made of metal with better wear resistance than the spring seat 55 to reduce the wear of the push rod 51, reduce the maintenance cost and ensure the service life of the sliding rail.
Embodiment 3
[0036] Based on the structure of Embodiment 1 or 2, as shown in FIGS. 1, 4 and 5, the inner rail unfolding lock 41 is further provided with an unlocking handle 415 which is connected to the driving part 412 and extends towards the push rod 51. The unlocking handle 415 and the unlocking mechanism 5 are combined into a double unlocking device, and by pressing the unlocking handle 415, the inner rail unfolding lock 41 can be rotated towards the resilient member 42, and the baffle 21 is directly disengaged from the clamping groove 411 to complete unlocking to facilitate installation and maintenance.
[0037] It will be evident to a person skilled in the art that the present invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the present invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
[0038] In addition, while the description has been described in terms of embodiments, not every embodiment includes a single embodiment, and that such recitation of the description is for purposes of clarity only and that a person skilled in the art in the art will recognize that the description may be appropriately combined to form appreciated by a person skilled in the art.
