CN112826256A - Improved self-closing device - Google Patents
Improved self-closing device Download PDFInfo
- Publication number
- CN112826256A CN112826256A CN202110034818.5A CN202110034818A CN112826256A CN 112826256 A CN112826256 A CN 112826256A CN 202110034818 A CN202110034818 A CN 202110034818A CN 112826256 A CN112826256 A CN 112826256A
- Authority
- CN
- China
- Prior art keywords
- groove
- sliding
- spring
- block
- sliding column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
- A47B88/40—Sliding drawers; Slides or guides therefor
Landscapes
- Drawers Of Furniture (AREA)
Abstract
The invention provides an improved self-closing device which is good in stability, simple in structure and more labor-saving in closing a drawer; the sliding guide structure comprises a cavity which is formed in the length direction of a main body strip, the side wall of the cavity is respectively provided with a first horizontal guide groove for the first sliding column to slide, a second horizontal guide groove for the second sliding column to slide, the front end of the first horizontal guide groove is communicated with a locking groove, the first horizontal guide groove and the second horizontal guide groove are arranged in parallel and staggered front and back, when the sliding rail is completely closed, the first sliding column and the second sliding column are positioned on the same inclined plane, and when the sliding rail is completely stretched, the first sliding column and the second sliding column are positioned on the same horizontal plane; one end of the spring is clamped in the omega-shaped clamping groove, and the other end of the spring is hooked on the second sliding column through the draw hook at the end part.
Description
Technical Field
The invention relates to the technical field of drawer sliding rails, in particular to an improved self-closing device.
Background
The drawer sliding rail is a component for connecting the drawer and the cabinet body and enabling the drawer to be pushed and pulled smoothly, and the drawer sliding rail is usually provided with a self-closing device at present so as to prevent the problem that the drawer is pushed and pulled improperly, or the drawer and the cabinet body are collided violently, even the drawer rebounds, or the drawer can not be closed completely; for example, the self-closing device of the slide rail component, which is disclosed in the publication No. CN105815950A, includes a main body, a damping member, a spring, a slider and a pawl, wherein the slider is installed in a slide guide structure provided on the main body, the damping member and the spring are respectively installed in a damping member installation groove and a spring groove on the main body and are both connected with the slider, the main body is fixedly installed on a fixed guide rail in a drawer slide rail, and the pawl is fixedly installed on the slide guide rail.
In the above-mentioned conventional self-closing device, two positioning protrusions 422a, 422b on the slider 42 are respectively located at the front end and the rear end of the slider, the bottom surface of the slider 42 is provided with a groove 451, one end of the spring 45 is engaged with the groove 451, the slider 42 is accommodated in the cavity 411 of the sliding guide structure on the main body 41 and moves back and forth along the guide groove 412, the guide groove 412 comprises a horizontal guide groove 4121 and a vertical guide groove 4122 in a downward direction, the drawer can be opened when the slider 42 releases the pawl 43, the positioning protrusion 422a at the front end of the slider 42 falls into the vertical guide groove 4122, the positioning protrusion 422b at the rear end is located in the horizontal guide groove 4121, that is, the slider 42 is in a tilted state of low front and high rear, and the spring 45 engaged with the slider is in a fully stretched state, so that when the drawer is closed, the pawl 43 needs to push the slider 42 to change the tilted state from the tilted state of low front and high, Even if the positioning protrusion 422a at the front end of the sliding block 42 is separated from the vertical guide groove 4122 and is located in the horizontal guide groove 4121 together with the positioning protrusion 422b at the rear end, the sliding block 42 locks the pawl 43 and pulls the sliding guide rail under the resilience of the spring 45, and then drives the drawer connected with the sliding guide rail to buffer and automatically close towards the cabinet.
That is, when the drawer is opened and closed, the slider 42 rotates around the vertical guide groove 4122 with the rear end positioning projection 422b always positioned in the horizontal guide groove 4121 as the rotation center, and the slider 42 changes between the inclined state and the horizontal state to lock and release the pawl 43; on one hand, if the included angle between the horizontal guide groove 4121 and the downward vertical guide groove 4122 is too large, the positioning protrusion 422a at the front end of the slider 42 is easy to slide out of the vertical guide groove 4122, and is under the action of the restoring force of the spring, when the drawer is in an open state, the slider 42 returns to the position when the drawer is in a closed state, the pawl 43 cannot be locked with the slider 42 to achieve buffering self-closing of the closed drawer, so that the self-closing device fails, and particularly if the cabinet body is vibrated by external force, the stability of the self-closing device is worse.
On the other hand, if the angle between the horizontal guide groove 4121 and the downward vertical guide groove 4122 is too small, although the locking force of the vertical guide groove 4122 to the front end positioning protrusion 422a of the slider 42 can be enhanced, so as to enhance the stability of the self-closing device, when the drawer is closed, before the pawl 43 enters the top groove 421 of the slider 42 and is locked with the slider, the action point of the pawl 43 pushing the slider 42 to rotate is the rear end groove wall 4212 of the top groove 421, and the rear end groove wall 4212 is close to the rotation center of the slider 42, i.e., the rear end positioning protrusion 422b, so that the pushing force required when the drawer is closed is large, about 7N or more, especially when the drawer contains heavy objects, the drawer is more laborious to close, and in addition, because one end of the spring 45 is engaged in the groove 451 on the bottom surface of the slider 42, the pushing force of the spring needs to be overcome.
Disclosure of Invention
The invention provides an improved self-closing device, aiming at the problems that the drawer needs larger thrust when the drawer is closed by the existing self-closing device, the drawer is hard to close and the stability is influenced.
The invention adopts the following technical scheme: it includes main part, spring and slider, the main part is equipped with communicating slip guide structure and spring groove, the slider is arranged in the slip guide structure, the spring is arranged in the spring inslot, the one end of spring with the slider links to each other its characterized in that: the sliding guide structure comprises a cavity which is formed in the length direction of the main body strip, a first horizontal guide groove and a second horizontal guide groove are formed in the side wall of the cavity respectively, the first horizontal guide groove and the second horizontal guide groove are used for allowing the first sliding column to slide, the front end of the first horizontal guide groove is communicated with a locking groove, the first horizontal guide groove and the second horizontal guide groove are arranged in a parallel and front-back staggered mode, when the sliding rail is completely closed, the first sliding column and the second sliding column are located on the same inclined plane, and when the sliding rail is completely stretched, the first sliding column and the second sliding column are located on the same horizontal plane; one end of the spring groove is communicated with the cavity, the other end of the spring groove and the main body are provided with omega-shaped clamping grooves, one end of the spring is clamped in the omega-shaped clamping grooves, and the other end of the spring is hooked on the second sliding column through a drag hook at the end part.
It is further characterized in that:
the shifting block comprises a block body, a front clamping tooth and a rear clamping tooth, the front clamping tooth and the rear clamping tooth are in shifting fit with the connecting groove of the sliding block, an installation plate is arranged in the middle of the block body, step grooves are symmetrically arranged at two ends of the block body on one side of the block body, and positioning columns are arranged on the other side of the block body and the end part of the installation plate;
the outer side surface of the front groove wall of the connecting groove is an arc-shaped guide surface; the shifting block forms a clamping opening matched with the front groove wall of the connecting groove between the front clamping tooth and the rear clamping tooth, and an inward concave self-rescue opening is formed in the shifting block at the rear part of the rear clamping tooth;
the locking groove is an arc locking groove;
an L-shaped groove is formed in the main body above the spring groove;
one end of the main body is provided with a linear clamping groove, the main body is provided with a bayonet, and a positioning block is arranged between the linear clamping groove and the bayonet and the main body;
the shifting block, the sliding block and the main body are all made of plastic materials.
After the structure is adopted, the second sliding column is arranged below the connecting groove instead of the rear end of the sliding block, on one hand, compared with the prior art, the second sliding column is closer to the first sliding column at the front end as a rotating support point, the power arm is increased, the resistance arm is reduced, the pushing force when the drawer is closed can be effectively reduced, and the drawer is lighter and more economical when a user closes the drawer; on the other hand, the second sliding column that is located the groove below of plugging into and the first sliding column of front end slide in two horizontal guide slots respectively, and in the department of taking place to rotate, compare prior art, the rotation orbit of first sliding column more matches with the guide effect of sliding guide structure, has further reduced the thrust when closing the drawer.
The spring is hooked on the second sliding column through the draw hook at the end part, so that the spring and the second sliding column serving as a rotating fulcrum are always in the same horizontal plane, and the thrust when the drawer is closed can be further reduced without overcoming the rotating angular force of the spring; and because of the spring hook hangs in the second slip post to make the block portion of spring and second slip post unite two into one with the second slip post among the prior art, not only optimized the structure, still reducible production and the degree of difficulty and the error of assembly.
Drawings
FIG. 1 is an exploded view of a first aspect of the present invention;
FIG. 2 is an exploded view of a second perspective of the present invention;
FIG. 3 is an exploded view of a third aspect of the present invention.
FIG. 4 is a schematic view of a first aspect of the present invention with the track fully closed;
FIG. 5 is a schematic structural view of a second aspect of the present invention with the slide rail fully closed;
fig. 6 is a third perspective view of the present invention when the slide rail is fully closed.
Fig. 7 is a schematic structural view of the present invention when the slide rail is fully extended.
FIG. 8 is a schematic view of the slider and spring connection of the present invention;
fig. 9 is an enlarged schematic view of a portion a of fig. 8.
FIG. 10 is a schematic diagram of a first perspective of an application of the present invention;
FIG. 11 is a schematic diagram of a second perspective of an exemplary application of the present invention;
fig. 12 is an assembly structure diagram of an application example of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 12, the present invention provides an improved self-closing device, which comprises a main body 4, a spring 3 and a slider 2, as shown in fig. 6, the main body 4 is provided with a sliding guide structure and a spring groove 412 which are communicated, the slider 2 is arranged in the sliding guide structure, the spring 3 is arranged in the spring groove 412, one end of the spring 3 is connected with the slider 2, the device further comprises a shifting block 1, as shown in fig. 1 to 3, the top of the slider 2 is provided with a connecting groove 201, the shifting block 1 is in shifting fit with the slider 2 through the connecting groove 201, the front end of the slider 2 is provided with a first sliding column 202, the slider 2 is provided with a second sliding column 203 below the connecting groove 201, as shown in fig. 1 to 7, the sliding guide structure comprises a cavity 402 which is formed along the length direction of the main body 4, the side wall of the cavity 402 is respectively provided with a first horizontal guide groove 405 for the first sliding column 202 and a second horizontal guide groove 410 for the sliding of, the front end of the first horizontal guide groove 405 is communicated with the locking groove 406, and the first horizontal guide groove 405 and the second horizontal guide groove 410 are arranged in parallel and staggered front and back, so that the sliding block 2 can rotate conveniently; preferably, the first sliding column 202 and the second sliding column 203 are respectively crossed with the slider 2, so that a balanced and stable sliding end is formed on two sides of the slider 2; the first horizontal guide groove 405, the locking groove 406 and the second horizontal guide groove 410 are all symmetrically arranged on two side walls of the cavity 402, namely an outer side wall 407 and an inner side wall 408 close to one side of the slide rail, wherein the first horizontal guide groove 405, the locking groove 406 and the second horizontal guide groove 410 on the inner side wall 408 are all through grooves, and the second horizontal guide groove 410 on the outer side wall 407 does not penetrate through the outer side wall 407 of the cavity 402, so that the appearance can be improved, the stable sliding and rotating of the slider can be ensured, and the stability of the self-closing device can be improved.
When the sliding rail is completely closed, the first sliding column 202 and the second sliding column 203 are located on the same inclined plane, as shown in fig. 5, the first sliding column 202 is located at the rear end of the first horizontal guide groove 405, the second sliding column 203 is located at the rear end of the second horizontal guide groove 410, the axial connecting line L1 of the first sliding column 202 and the second sliding column 203 is inclined to the stretching or closing direction of the sliding rail, when the sliding rail is completely stretched, the first sliding column 202 and the second sliding column 203 are located on the same horizontal plane, as shown in fig. 7, the first sliding column 202 is limited at the bottom of the locking groove 406, the second sliding column 203 is located at the front end of the second horizontal guide groove 410, and the axial connecting line L2 of the first sliding column 202 and the second sliding column 203 is parallel to the stretching or closing direction of the sliding rail, so that the second sliding column 203 as the pivot is located under both the connecting groove 201 and the first sliding column 202 at the pivot end, when the sliding block is pivoted, on one hand, the second sliding column is closer to the first sliding column at the front end as a rotating fulcrum, so that the power arm is increased, the resistance arm is reduced, and the pushing force when the drawer is closed is reduced; on the other hand, the rotating track of the first sliding column can be matched with the guiding function of the sliding guide structure, and the pushing force when the drawer is closed is further reduced.
As shown in fig. 3 and 6, one end of the spring slot 412 is communicated with the cavity 402, the other end of the spring slot 412 and the main body 4 are provided with an omega-shaped clamping slot 413, one end 302 of the spring 3 is clamped in the omega-shaped clamping slot 413, the other end of the spring 3 is hooked on the second sliding column 203 through a draw hook 301 at the end part, and the draw hook 301 is hooked on the second sliding column in an annular shape, so that the corner force generated by the angular change of the connecting end of the spring and the sliding block due to the rotation of the sliding block can be avoided, and the pushing force when the drawer is closed is further reduced; the omega-shaped clamping groove can enhance the clamping stability of the spring and the main body and ensure the stability and effectiveness of the self-closing device; preferably, as shown in fig. 8 and 9, an avoiding groove 206 is formed at the second sliding column 203 and the sliding block 2, a limiting strip 207 is formed on the second sliding column 203, and when the spring 3 is hooked on the second sliding column 203, the avoiding groove 206 can accommodate the draw hook 301 and the limiting strip 207 to prevent the spring 3 from slipping, thereby improving the stability of the self-closing device.
As shown in fig. 1 to 5, the shifting block 1 includes a block body 101, a front latch 105 and a rear latch 106, the front latch 105 and the rear latch 106 are in shifting fit with a connecting groove 201 of the slider 2, a mounting plate 103 is arranged in the middle of the block body 101, step grooves 102 are symmetrically arranged at two ends of the block body 101 on one side of the block body 101, and a positioning column 107 is arranged at the end of the mounting plate 103 on the other side of the block body 101; preferably, the mounting plate 103 is in a suspended state and symmetrically arranged on the block body 101, and the positioning columns 107 are also symmetrically arranged at the end part of the suspended end of the mounting plate 103, so that the mounting plate 103 is slightly deformed, and the convenience and accuracy of mounting the shifting block 1 are improved.
Preferably, the shifting block 1, the sliding block 2 and the main body 4 are all made of plastic materials and are integrally formed, so that the processing and the replacement are convenient, and the service life is prolonged; as shown in fig. 1 and fig. 3, the outer side surface 204b of the front groove wall 204 of the docking groove 201 is an arc-shaped guide surface; the shifting block 1 forms a clamping opening 108 matched with the front groove wall 204 of the connecting groove between the front clamping tooth 105 and the rear clamping tooth 106, and the shifting block 1 is provided with an inward concave self-rescue opening 104 at the rear part of the rear clamping tooth 106; when the sliding rail is completely stretched, namely the drawer is opened, and the first sliding column 202 at the front end of the sliding block 2 is separated from the locking groove 406, and the sliding block 2 is pulled back to the rear end of the cavity 402 under the restoring force of the spring 3, namely, the sliding rail is in a position when the sliding rail is completely closed, the drawer is closed, the sliding block cannot normally lock the shifting block, so that the self-closing device fails, at the moment, the sliding block 2 can be pulled back to the front end of the cavity 402 through the concave self-rescue opening 104, the clamping opening 108 and the connecting groove front groove wall 204, so that the first sliding column 202 at the front end of the sliding block 2 can fall into the locking groove 406 again, and self-rescue of the self-closing device is realized: the movable rail is pushed to drive the shifting block 1 to move along the closing direction of the sliding rail, when the rear latch 106 of the shifting block 1 touches the arc-shaped guide outer side surface 204b of the front groove wall 204 of the connecting groove 201, the rear latch 106 of the shifting block 1 is thinner than the front latch 105 due to the concave self-rescue opening 104 at the rear part of the rear latch 106, so that the rear latch 106 is slightly deformed to cross the arc-shaped guide outer side surface 204b and enter the connecting groove 201, the front groove wall 204 of the connecting groove is clamped in the clamping opening 108 of the shifting block 1, the movable rail is pulled to drive the shifting block 1 to move along the stretching direction of the sliding rail, namely, the sliding block is pulled to move towards the front end of the cavity 402 by the front groove wall 204 of the connecting groove, when the second sliding column 203 slides to the vicinity of the front end of the second horizontal guide groove 410, a slightly strong pulling force is applied to the movable rail, so that the first sliding column 202 can fall into the relocking groove 406 and separate the clamping opening 108 from the front groove wall, thereby restoring the slider of the self-closing apparatus to the normal state as shown in fig. 7; preferably, the outer side surface 205b of the rear groove wall 205 of the docking groove 201 is also an arc-shaped guide surface, so that the aesthetic property can be improved, the abrasion among all parts of the self-closing device can be reduced, and the service life can be prolonged.
As shown in fig. 1 to 3, the locking groove 406 is an arc-shaped locking groove, which facilitates the sliding block 2 to rotate smoothly, and reduces the difficulty of opening and closing the drawer; as shown in fig. 4 to 6, the body is provided with an L-shaped groove 403 above the spring groove 412 to prevent deformation of the body during processing; one end of the main body 1 is provided with a linear clamping groove 401, the main body is provided with a bayonet 411, and a positioning block 409 is arranged between the linear clamping groove 401 and the bayonet 411 and the main body 1; preferably, the positioning block 409 close to the linear clamping groove 401 is a cuboid positioning block, the positioning block 409 close to the bayonet 411 is a right-angle step positioning block, and the assembling stability of the main body and the sliding rail can be enhanced; the bayonet 411 penetrates the body 1 in the strip width direction of the body 1, so that the observation port 404 is formed on the side of the body 1 opposite to the bayonet 411, and the assembly, disassembly and maintenance are convenient.
The working principle is that as shown in fig. 10-12, taking a three-section sliding rail 5 as an example, the sliding rail 5 comprises a fixed rail 501, a middle rail 502 and a movable rail 503, the fixed rail 501 can be mounted on the cabinet body through a mounting bracket 6, and the movable rail 503 is connected with the drawer, as shown in fig. 1-3 and 12, the shifting block 1 and the movable rail 503 are matched and positioned through a positioning column 107 and a first positioning hole 8 and clamped and mounted through a step groove 102 and a first clamping hook 9, and the assembly is simple and reliable; a second hook 7 respectively buckled with the linear clamping groove 401 and the bayonet 411 is arranged on the fixed rail 501 of the sliding rail 5, and a second positioning hole 10 matched with the positioning block 409 is also respectively arranged on the fixed rail 501, preferably, as shown in fig. 5 and 12, the second positioning hole matched with the cuboid positioning block is positioned at the second clamping hook of the clamping linear clamping groove, the cuboid positioning block can be pressed after the linear clamping groove and the second clamping hook are buckled, the main body 1 is prevented from falling off from the fixed rail 501, the assembly stability is improved, in addition, because the main body and the fixed rail are connected with the second hook 7 through the linear clamping groove 401 and the bayonet 411 in a matching way, compared with the CN105815950A 'self-closing device of a slide rail component', the hook arranged at the rear end of the main body and the main body can only be assembled at the rear end of the fixed rail, the main body and the fixed rail are not limited to be assembled at the rear end, so that the assembly is more flexible, and the slide rail can be conveniently suitable for slide rails with different specifications and lengths.
When the drawer is completely closed in the cabinet body, that is, the slide rail is completely closed, as shown in fig. 1 to 6, 10 and 12, the shifting block 1 and the slide block 2 are locked by the connection groove 201, that is, the front groove wall 204 limits the front latch 105 of the shifting block 1 from the front end through the inner side surface 204a, and the rear groove wall 205 limits the rear latch 106 of the shifting block 1 from the rear end through the inner side surface 205a, so that the shifting block 1 is locked in the connection groove 201 through the front latch 105 and the rear latch 106, and since the shifting block 1 is clamped on the movable rail 503, the movable rail 503 and the fixed rail 501 are locked by the shifting block 1 and the slide block 2, and the two rails do not slide relatively, thereby ensuring the completely closed state of the drawer.
When external force is applied to pull out the drawer, that is, to pull the movable rail 503 of the sliding rail 5, as shown in fig. 1-2 and fig. 7, the shifting block 1 locked in the docking slot 201 at the top of the sliding block 2 drives the sliding block 2 to move together, that is, the sliding block 2 slides in the sliding rail pulling direction in the cavity 402 through the first sliding column 202 and the first horizontal guide slot 405, the second sliding column 203 and the second horizontal guide slot 410, the sliding block 2 simultaneously drives the spring 3 to pull, when the first sliding column 202 slides to the junction of the first horizontal guide slot 405 and the locking slot 406, the second sliding column 203 slides to the vicinity of the front end of the second horizontal guide slot 410, and when the movable rail 503 continues to move forward, the first sliding column 202 rotates with the second sliding column 203 as a rotation fulcrum and falls into the locking slot 406, the sliding block 2 and the docking slot 201 thereon are tilted to be in a state of low front and high back, and when the first sliding column 202 falls into the bottom of the locking slot 406, the second sliding column 203 is located at the front end of the second horizontal guide groove 410, is in the same horizontal plane (as shown in fig. 7) as the first sliding column 202, and the spring 3 is in the maximum stretching state, the front groove wall 204 of the connecting groove 201 releases the limitation on the front latch 105 of the shifting block 1, and as the movable rail 503 continues to stretch, the rear latch 106 of the shifting block 1 also disengages from the connecting groove 201, the sliding block 2 completely releases the shifting block 1, and the drawer is opened accordingly.
When external force is applied to close the drawer, that is, the drawer is pushed to drive the movable rail 503 of the sliding rail 5 to move towards the rear end, as shown in fig. 2 and fig. 7, the shifting block 1 moves along with the movement, the rear latch 106 enters the inclined docking slot 201, as the movable rail 503 continues to be pushed, the rear latch 106 touches the rear slot wall 205 of the docking slot 201 and applies a backward pushing force to the inner side surface 205a of the rear slot wall 205, so that the slider 2 has a tendency of changing from the inclined state to the horizontal state, the first sliding column 202 rotates along with the second sliding column 203 as a rotation fulcrum and slides from the locking slot 406 to the first horizontal guide slot 405, and when the first sliding column 202 slides onto the first horizontal guide slot 405, the front latch 105 of the shifting block 1 enters the docking slot 201 along with the sliding column 2, the sliding block 2 becomes the horizontal state and locks the shifting block 1, as the restoring force of the spring 3, the spring 3 pulls the sliding block 7 to continue to slide towards the rear end in the cavity 402, and drives the shifting block 1 to move, so that the drawer connected with the movable rail 503 is closed towards the cabinet body, and at the moment, the drawer can be moved towards the cabinet body in a buffering and automatic manner through the acting force of the spring 3 without applying pushing force again until the drawer is completely closed in the cabinet body, as shown in fig. 10.
When the drawer is closed, the shifting block 1 touches the rear groove wall 205 of the docking groove 201 and applies a backward pushing force to the inner side surface 205a of the rear groove wall 205 as a power end, and the first sliding column 202 falling into the bottom of the locking groove 406 is a resistance end, as shown in fig. 1, 5 and 7, the second sliding column is arranged below the docking groove from the rear end of the sliding block, on one hand, compared with CN105815950A, the second sliding column is closer to the first sliding column at the front end as a rotation support point, so that the distance between the second sliding column 203 and the rear groove wall 205 is increased, and the distance between the second sliding column 203 and the first sliding column 202 is reduced, namely, the power arm is increased and the resistance arm is reduced, thereby according to the lever principle, the pushing force when the drawer is closed can be effectively reduced, namely, the user is lighter and more economical when the drawer is closed.
On the other hand, the second sliding column located below the docking slot and the first sliding column at the front end respectively slide in the two horizontal guide slots, at the rotating position, namely the connecting position of the first horizontal guide slot 405 and the locking slot 406, the second sliding column 203 serving as a rotating fulcrum is located below the first sliding column 202 at the rotating end, so that the rotating track of the first sliding column can be better matched with the first horizontal guide slot 405 and the locking slot 406, and when the drawer is closed, compared with the pushing force applied by the shifting block 1 in CN105815950A, the pushing force applied by the shifting block 1 of the invention needs to overcome the traction force of the rotating fulcrum to the front end positioning projection, the pushing force applied by the shifting block 1 can enable the sliding block to generate a self-rotation effect by taking the second sliding column 203 as a rotating shaft, thereby further reducing the pushing force when the drawer is closed.
Because the spring is connected with the second sliding column through the draw hook at the end part and the draw hook is hung on the second sliding column in an annular shape, when the drawer is closed, compared with CN105815950A in which the turning angle force of the spring is required to be overcome, the invention ensures that the spring and the second sliding column as a turning fulcrum are always in the same horizontal plane, the turning of the first sliding column can not influence the change of the angle of the spring, thus further reducing the thrust when the drawer is closed; the spring is hooked on the second sliding column, so that the clamping part of the spring and the second sliding column in the CN105815950A and the second sliding column are combined into a whole in the invention, the structure is optimized, and the difficulty and the error of production and assembly can be reduced; through the thrust of 10 ten thousand times life-spans of quick trial assembly test, can make the thrust of closing the drawer reduce to more than 3N more than by more than 7N through above-mentioned structure to the drawer is closed more lightly sparingly, can effectively improve user's use and experience.
Claims (7)
1. The improved self-closing device comprises a main body, a spring and a sliding block, wherein the main body is provided with a sliding guide structure and a spring groove which are communicated, the sliding block is arranged in the sliding guide structure, the spring is arranged in the spring groove, and one end of the spring is connected with the sliding block, and the improved self-closing device is characterized in that: the sliding guide structure comprises a cavity which is formed in the length direction of the main body strip, a first horizontal guide groove and a second horizontal guide groove are formed in the side wall of the cavity respectively, the first horizontal guide groove and the second horizontal guide groove are used for allowing the first sliding column to slide, the front end of the first horizontal guide groove is communicated with a locking groove, the first horizontal guide groove and the second horizontal guide groove are arranged in a parallel and front-back staggered mode, when the sliding rail is completely closed, the first sliding column and the second sliding column are located on the same inclined plane, and when the sliding rail is completely stretched, the first sliding column and the second sliding column are located on the same horizontal plane; one end of the spring groove is communicated with the cavity, the other end of the spring groove and the main body are provided with omega-shaped clamping grooves, one end of the spring is clamped in the omega-shaped clamping grooves, and the other end of the spring is hooked on the second sliding column through a drag hook at the end part.
2. The improved self-closing device of claim 1, wherein: the shifting block comprises a block body, a front clamping tooth and a rear clamping tooth, the front clamping tooth and the rear clamping tooth are in poking fit with a connection groove of the sliding block, a mounting plate is arranged in the middle of the block body, one side of the block body is symmetrically provided with step grooves at two ends of the block body, and a positioning column is arranged at the other side of the block body and the end of the mounting plate.
3. The improved self-closing device of claim 2, wherein: the outer side surface of the front groove wall of the connecting groove is an arc-shaped guide surface; the shifting block is arranged between the front latch and the rear latch to form a clamping opening matched with the front slot wall of the connecting slot, and an inward concave self-rescue opening is formed in the rear part of the rear latch and the shifting block.
4. The improved self-closing device of claim 1, wherein: the locking groove is an arc-shaped locking groove.
5. The improved self-closing device of claim 1, wherein: an L-shaped groove is formed above the spring groove and on the main body.
6. The improved self-closing device of claim 1, wherein: the positioning device is characterized in that a linear clamping groove is formed in one end of the main body, a bayonet is formed in the main body, and a positioning block is arranged between the linear clamping groove and the bayonet and the main body.
7. The improved self-closing device of claim 1, wherein: the shifting block, the sliding block and the main body are all made of plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110034818.5A CN112826256B (en) | 2021-01-12 | 2021-01-12 | Improved self-closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110034818.5A CN112826256B (en) | 2021-01-12 | 2021-01-12 | Improved self-closing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112826256A true CN112826256A (en) | 2021-05-25 |
| CN112826256B CN112826256B (en) | 2022-10-04 |
Family
ID=75927834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110034818.5A Active CN112826256B (en) | 2021-01-12 | 2021-01-12 | Improved self-closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112826256B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103783852A (en) * | 2014-01-24 | 2014-05-14 | 无锡晶美精密滑轨有限公司 | Self-locking sliding rail |
| CN109757883A (en) * | 2019-02-18 | 2019-05-17 | 青岛瑞雅精密制造有限公司 | A kind of drawer automatic buffer closing device |
| JP2019187913A (en) * | 2018-04-26 | 2019-10-31 | 日本アキュライド株式会社 | Slide rail with automatic pull-in device |
| CN210471520U (en) * | 2019-04-30 | 2020-05-08 | 江苏星徽精密科技有限公司 | Push away bullet slide rail |
| CN215456602U (en) * | 2021-01-12 | 2022-01-11 | 无锡海达尔精密滑轨股份有限公司 | Improved self-closing device |
-
2021
- 2021-01-12 CN CN202110034818.5A patent/CN112826256B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103783852A (en) * | 2014-01-24 | 2014-05-14 | 无锡晶美精密滑轨有限公司 | Self-locking sliding rail |
| JP2019187913A (en) * | 2018-04-26 | 2019-10-31 | 日本アキュライド株式会社 | Slide rail with automatic pull-in device |
| CN109757883A (en) * | 2019-02-18 | 2019-05-17 | 青岛瑞雅精密制造有限公司 | A kind of drawer automatic buffer closing device |
| CN210471520U (en) * | 2019-04-30 | 2020-05-08 | 江苏星徽精密科技有限公司 | Push away bullet slide rail |
| CN215456602U (en) * | 2021-01-12 | 2022-01-11 | 无锡海达尔精密滑轨股份有限公司 | Improved self-closing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112826256B (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8714671B2 (en) | Automatic homing and track buffering device | |
| US7347515B1 (en) | Sliding rail assembly auto opening mechanism for drawer | |
| US7854485B2 (en) | Closing and opening device for drawers | |
| US6979066B2 (en) | Rail assembly for furniture | |
| US6851286B2 (en) | Frontal latch handle assembly | |
| US8182054B2 (en) | Retraction mechanism for a drawer | |
| US6953233B2 (en) | Closing device for drawers | |
| US9873358B2 (en) | Locking device for baby car seat | |
| KR101143569B1 (en) | Adjusting device for auto-closed | |
| US20080231153A1 (en) | Automatic locking apparatus used in guide rail for drawer | |
| CN215456602U (en) | Improved self-closing device | |
| WO2018082314A1 (en) | Damper assembly, rail assembly and dishwasher | |
| JP2014230787A (en) | Movement and movement restriction apparatus and movement restriction unit of the same | |
| JP3164269U (en) | Extension slide rail device with automatic return function | |
| JP2008092984A (en) | Latch device for drawer lock | |
| CN112826256B (en) | Improved self-closing device | |
| JP2021536540A (en) | Impact absorption braking device for sliding panels and doors | |
| WO2020034341A1 (en) | Head-mounted device and quick-disassembling device therefor | |
| CN215820268U (en) | Press bullet formula drawer bounce-back ware | |
| KR101156640B1 (en) | Structure for opening and closing door | |
| GB2584582A (en) | Baby carriage and backrest angle adjusting device thereof | |
| KR100741668B1 (en) | Window tilt device | |
| KR200372262Y1 (en) | Connecting structure of drawer rail | |
| CN215776641U (en) | Guide rail with press bounce-back to open and buffering that resets is closed | |
| KR102314062B1 (en) | Under rail guide bracket for drawer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |