CN112716180B

CN112716180B - Locking device of sliding drawer

Info

Publication number: CN112716180B
Application number: CN201911038116.3A
Authority: CN
Inventors: 林涛; 刘九龙
Original assignee: Kefan Home Furnishing Co ltd
Current assignee: Kefan Home Furnishing Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2023-11-21
Anticipated expiration: 2039-10-29
Also published as: CN112716180A

Abstract

The invention relates to the technical field of furniture and discloses a locking device of a sliding drawer, which comprises a locking part and a limiting part, wherein the locking part comprises a locking seat and a mounting plate, the side edge of the locking seat is provided with a sliding rail and a sliding block nested with the sliding rail, an elastic part is arranged between the sliding block and the sliding rail, the side edge of the sliding block is provided with a locking pin, and the locking part is mounted on the rear side of a drawer backboard; the front of limiting part is provided with the spout, is provided with direction balance needle and limit stop in the spout, and the swing of direction balance needle is gone up and is gone down the swing and can be separated into slide and glide slope with the spout inner chamber, and limit stop's side is provided with spacing draw-in groove, limiting part installs in the inboard of drawer storehouse curb plate, locking part pass through the locking pin with limiting part's spout is connected perpendicularly. The locking device has reasonable structural design, is easy to process and assemble, can lock the pulled drawer after being installed, and has convenient use and good safety performance.

Description

Locking device of sliding drawer

Technical Field

The invention relates to the technical field of furniture, in particular to a locking device of a sliding drawer.

Background

In modern life, various tables or cabinets are used everywhere, whether in families, offices or public places, so that articles can be placed and stored conveniently. For more practicality and pleasing to the eye, can install slidingtype drawer on many tables and cabinets, slidingtype drawer passes through slide rail and desk or cupboard erection joint, and the slip is nimble, easily switch, convenient to use.

However, most sliding drawers on the market at present do not have a locking function, for furniture such as keyboard drawers of office tables or demonstration tables, drawer boards of folding dining tables or drawing type mother and infant tables, the respective drawers are required to be kept in a pulled-out state to form a fixed table surface when in use, if the pulled-out state cannot be kept through locking limit after the drawers are pulled out, the drawers are easy to push back to be closed due to self or other miscollisions, so that the use is inconvenient, the user experience is affected, the safety performance is low due to the fact that the drawers cannot be locked after the drawers are pulled out, the user can be clamped by the drawers and even injured due to no provision, and particularly, in family life, danger is more easily caused by the fact that children push the drawers at will.

It is therefore necessary to provide a locking device for a sliding drawer that solves the above-mentioned problems.

Disclosure of Invention

The locking device of the sliding drawer mainly solves the problems that most sliding drawers in the prior art do not have a locking function, the drawer cannot be kept in a pulled-out state through locking limit after being pulled out, and the drawer is easy to push back to be closed due to collision by oneself or other persons, so that the use is inconvenient, the safety performance is low, and the danger of clamping hands is easy to occur. The locking device of the sliding drawer is arranged between the drawer backboard and the drawer bin side plate and is used for locking the pulling state of the sliding drawer, so that the sliding drawer can be prevented from being pushed back to be closed by error collision, and the sliding drawer locking device has good safety performance, and is reasonable in structural design, compact and small in size, few in parts, less in consumable, easy to process, simple to install, convenient to use and wide in application range.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the locking device of the sliding drawer is arranged between the drawer back plate and the drawer bin side plate and is used for locking the pulling-out state of the sliding drawer, and the locking device of the sliding drawer comprises a locking part and a limiting part;

the locking component comprises a locking seat and a mounting plate for mounting the locking seat, a sliding rail and a sliding block nested with the sliding rail are arranged on the side edge of the locking seat, an elastic component for pulling the sliding block to slide up and down along the sliding rail is arranged between the sliding block and the sliding rail, a protruding locking pin is vertically arranged on the side edge of the sliding block, and the locking component is mounted on the rear side of the drawer backboard;

the front of limit part is provided with the spout, and the one end of spout has the opening that points to the drawer rear, be provided with direction balance needle and limit stop in the spout, thereby through pivot swing joint between the root of direction balance needle and the spout, thereby the direction balance needle can be separated into slide and glide slope with the spout inner chamber, limit stop is located the rear side of direction balance needle root, and limit stop's rear side portion is provided with the limit draw-in groove that is "V" type, limit part installs in the inboard of drawer storehouse curb plate.

The locking component of the invention is vertically connected with the sliding groove of the limiting component in a sliding way through the locking pin. Under the closing state of the drawer, the locking part and the limiting part are separated from each other, and the needle tip of the guide balance needle falls and is overlapped at the bottom of the chute due to the action of gravity, so that an upper slideway in the chute is completely opened;

when the drawer needs to be closed, the drawer is pulled outwards, the sliding block moves along with the drawer and also moves downwards along the sliding rail under the action of the tensile force of the elastic component, so that the locking pin slides to be separated from the limiting clamping groove and falls into the lower slideway in the sliding groove, then the drawer is pushed back, the locking pin slides backwards along with the lower slideway, the guide swing pin can be jacked up to enable the lower slideway of the sliding groove to be completely opened, the locking pin slides out of the sliding groove along the lower slideway, finally, the locking component is separated from the limiting component, and the drawer can be pushed back to place and closed.

Further, the limit stop comprises a first stop block and a second stop block, a V-shaped channel is formed between the first stop block and the second stop block at intervals, and the limit clamping groove is formed in one side, close to the second stop block, of the first stop block, so that when the drawer is pulled open and locked, the V-shaped channel can play a guiding role when the locking pin slides into the limit clamping groove, the V-shaped channel is accurately clamped into the limit clamping groove, and the locking state of the drawer is ensured to be stable and reliable.

Further, the root of the guide swing needle is arc-shaped, an arc-shaped notch corresponding to the root of the guide swing needle is arranged on one side, away from the second stop block, of the first stop block, the root of the guide swing needle is movably abutted to the arc-shaped notch, and therefore the guide swing needle is tightly abutted to the first stop block, compact coordination among all parts can be improved, the upper side of the guide swing needle is connected with the side edge of the first stop block in a gapless manner, smooth and unimpeded mode when the locking pin slides along an upper slideway in the chute can be ensured, and abrasion of all parts is reduced.

Further, the cross section of the sliding rail is of a T shape, the cross section of the inner cavity of the sliding block is of a cross shape, and the sliding block is connected with the sliding rail in a nested manner through the cross-shaped inner cavity of the sliding block, so that the adaptation degree of the sliding block and the sliding rail can be improved, the sliding block is limited to slide linearly along the sliding rail in the up-down direction, and the locking pin can be precisely matched with the limiting part and slide smoothly.

Furthermore, the elastic component installed between the sliding block and the sliding rail is a spring or a rubber string, and the spring is preferable because the spring has good elasticity and high strength, is easy to restore to original shape after being deformed, can be repeatedly pulled and stretched, has long service life, and is easy to install and fix.

Further, the bottom of the sliding rail is provided with a horizontal extension baffle, one end of the spring is fixedly connected with the extension baffle, and the other end of the spring is fixedly connected with the side wall of the inner cavity of the sliding block. The extension baffle is arranged, so that a limiting effect can be achieved when the sliding block slides downwards along the sliding rail, and the locking pin is prevented from being separated from the sliding rail, so that the locking pin cannot be accurately abutted with the limiting component. The both ends of spring respectively with extend baffle and slider inner chamber fixed connection, firm reliable, durable is favorable to providing stable effective traction force to the slider.

Further, the left and right sides of locking seat all symmetry is provided with the slide rail, the slider is installed on the slide rail of locking seat wherein one side, like this, can improve locking component's commonality, and the locking component of same mould production can be general in the left side and the right side of drawer backplate, and application scope is wide, is convenient for discern the installation moreover, is favorable to improving processing and installation effectiveness.

Further, the front of mounting panel is provided with horizontal "L" type cardboard from top to bottom symmetry, thereby two "L" type cardboard openings are relative to form horizontal draw-in groove, the locking seat nestification is in the draw-in groove, and the upper and lower side of locking seat is connected with the embedding of respective corresponding "L" type cardboard respectively to make the stable reliable installation of locking seat be in on the mounting panel, another aim at that sets up two "L" type cardboard on the mounting panel, the interval between drawer mounting panel and the drawer storehouse curb plate of different furniture probably has processing or installation error, therefore when installing and during the use, in order to make the locking pin on the locking part fully coordinate the butt joint with the spout on the limiting part, can need to carry out left and right movement adjustment with the locking seat relative to the mounting panel, at this moment, the draw-in groove that the upper and lower relative "L" type cardboard formed just plays direction and spacing effect to the locking seat, finally makes locking pin and spout realization perfect adaptation.

Further, an adjusting and positioning component is further arranged between the locking seat and the mounting plate, the adjusting and positioning component is used for adjusting and limiting the displacement of the locking seat relative to the left and right directions of the mounting plate, the adjusting and positioning component comprises a limiting ruler and a rotary shifting piece, the limiting ruler is arranged on the front surface of the locking seat, and the limiting ruler is formed by a plurality of concave holes distributed on the surface of the locking seat in a fan shape; the bottom end of the rotary plectrum is movably connected with the locking seat and the mounting plate through a pivot, an elastic piece is arranged in the middle of the rotary plectrum, and a convex needle matched with the concave hole is arranged on the back surface of the elastic piece; the rotary shifting piece is abutted with the concave hole of the limit ruler through the convex needle on the back of the elastic piece. When the locking seat needs to be adjusted in a left-right movement mode so that the locking pin and the limiting component are accurately and moderately butted, the rotary pulling piece can be pulled in the clockwise direction or the anticlockwise direction, when the rotary pulling piece rotates, the convex needle on the back face of the elastic piece can be clamped into any concave hole on the limiting ruler to move left and right, when the locking seat is adjusted in place, the convex needle on the back face of the elastic piece is clamped into the corresponding concave hole to clamp and position the locking seat, in the adjusting process, when the rotary pulling piece rotates anticlockwise, the locking seat is driven to move left, when the rotary pulling piece rotates clockwise, the locking seat is driven to move right, and therefore the locking seat can be adjusted and positioned simply, accurately and stably, and the assembly coordination and reliability of the locking pin and the limiting component are improved.

Still further, be provided with two first mounting holes on locking part's the mounting panel at least, be provided with on the locking seat with the through-hole that the first mounting hole corresponds, be provided with two second mounting holes on the spacing part at least, first mounting hole and second mounting hole are countersunk head screw hole, like this, can adopt self tapping screw to run through first mounting hole or second mounting hole respectively with locking part and spacing part fixed mounting on drawer backplate and drawer storehouse curb plate, it is firm, and the screw head is hidden in each mounting hole moreover, and outward appearance roughness is high.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

1. the locking device of the sliding drawer is arranged between the drawer backboard and the drawer bin side plate and is used for locking the pulling state of the sliding drawer, so that the sliding drawer can be prevented from being pushed back to be closed by mistake collision to influence normal use, and meanwhile, the safety performance of the sliding drawer can be improved by adopting the locking device, and the phenomenon that the hands of a person are clamped and injured due to the fact that the drawer is pushed back at will is prevented;

2. the locking device of the sliding drawer has reasonable structural design, compact and small volume, fewer parts and consumables, is easy to process and manufacture, and is beneficial to reducing the manufacturing cost;

3. the locking device of the sliding drawer is simple and quick to install, is stable and durable, and can be used for integrally hiding the inside of the drawer after being installed, so that the flatness of the appearance of the drawer is ensured;

4. the locking device of the sliding drawer is convenient to use, the drawer can be locked by being pulled out completely when in use, the drawer can be converted into a fixed operation table, when the drawer needs to be closed, the drawer can be unlocked by being pulled outwards gently, and then the drawer can be closed by being pushed backwards, so that the locking device is time-saving and labor-saving;

5. the locking device of the sliding drawer has high utility and adaptation degree of each part, can be used for drawers of various furniture such as office tables, demonstration tables, folding dining tables or drawing type mother and infant tables, coffee machine shelves and the like, has wide application range and is easy to popularize and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the specific embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a locking member of the present invention;

FIG. 2 is another angular perspective view of the locking member of the present invention;

FIG. 3 is an exploded view of the locking member of the present invention;

FIG. 4 is a rear perspective view of a rotary paddle of the present invention;

fig. 5 is a perspective view of the stop member of the present invention as the guide needle falls;

FIG. 6 is a perspective view of the stop member of the present invention when the guide balance is raised;

FIG. 7 is an exploded view of the spacing member of the present invention;

FIG. 8 is a diagram showing the assembly relationship of the locking member and the spacing member of the present invention;

FIG. 9 is a diagram showing the mounting relationship of the locking member to the drawer back of the present invention;

FIG. 10 is a view of the mounting relationship of the locking member to the side panel of the drawer compartment in accordance with the present invention;

FIG. 11 is a view showing the installation of the locking device and drawer of the present invention;

FIG. 12 is an enlarged view at A of FIG. 11;

FIG. 13 is a schematic view of a counterclockwise adjustment of the adjustment positioning member on the locking member;

fig. 14 is a schematic view of the clockwise adjustment of the adjustment positioning member on the locking member.

The marks in the figure: the locking mechanism comprises a 1-locking component, a 11-locking seat, a 111-sliding rail, a 112-sliding block, a 113-spring, a 114-locking pin, a 115-extending baffle, a 116-through hole, a 12-mounting plate, a 121-L-shaped clamping plate, a 122-first mounting hole, a 13-adjusting and positioning component, a 131-limit ruler, a 1311-concave hole, a 132-rotary pulling piece, a 1321-elastic piece, a 1322-protruding needle, a 2-limiting component, a 21-sliding groove, a 211-upper sliding rail, a 212-lower sliding rail, a 22-guiding swing needle, a 23-limit stop, a 231-first stop, a 232-second stop, a 233-V-shaped channel, a 24-limit clamping groove, a 25-second mounting hole, a 3-drawer, a 31-drawer back plate, a 32-drawer bottom plate, a 33-drawer guide rail, a 4-drawer bin and a 41-drawer bin side plate.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the present embodiment, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

References to "first," "second," etc. in the description of embodiments of the invention are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying any particular order of such features, whereby a feature defining "first," "second," etc. may explicitly or implicitly include at least one such feature.

Meanwhile, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "horizontal", "vertical", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "engaged," "abutted," etc. are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with the interior of both elements. The above terms are understood in the specific meaning of the present invention according to circumstances, for those of ordinary skill in the art.

For a clearer understanding of technical features, objects, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.

Examples:

as shown in fig. 1 to 7 and 11, a locking device of a sliding drawer is installed between a drawer back plate 31 and a drawer cabin side plate 41 and is used for locking the pulled-out state of the sliding drawer 3, and comprises a locking part 1 and a limiting part 2; the locking component 1 comprises a locking seat 11 and a mounting plate 12 for mounting the locking seat 11, a sliding rail 111 and a sliding block 112 movably nested with the sliding rail 111 are arranged on the side edge of the locking seat 11, an elastic component for pulling the sliding block 112 to slide up and down along the sliding rail 111 is arranged between the sliding block 112 and the sliding rail 111, a protruding locking pin 114 is vertically arranged on the side edge of the sliding block 112, and the locking component 1 is horizontally mounted on the rear side of the drawer backboard 31 through the back surface of the mounting plate 12; the front of the limiting component 2 is provided with a chute 21, one end of the chute 21 is provided with an opening pointing to the rear of the drawer 3, a guide swing needle 22 and a limiting stop 23 are arranged in the chute 21, the root of the guide swing needle 22 is movably connected with the chute 21 through a pivot, the guide swing needle 22 can swing up and down so as to divide the inner cavity of the chute 21 into an upper slideway 211 and a lower slideway 212, the limiting stop 23 is positioned at the rear side of the root of the guide swing needle 22, the rear side part of the limiting stop 23 is provided with a V-shaped limiting clamping groove 24, and the limiting component 2 is horizontally arranged at the inner side of a drawer bin side plate 41 through the back of the limiting component; the locking component 1 is vertically and slidingly connected with the sliding groove 21 of the limiting component 2 through a locking pin 114.

The limit stop 23 comprises a first stop 231 and a second stop 232, the first stop 231 and the second stop 232 are arranged at intervals to form a V-shaped channel 233 therebetween, and the limit clamping groove 24 is arranged on one side of the first stop 231 close to the second stop 232, so that when the drawer 3 is pulled open and locked, the V-shaped channel 233 can play a guiding role when the locking pin 114 slides into the limit clamping groove 24, so that the locking pin can be accurately clamped into the limit clamping groove 24, and the locking state of the drawer 3 is ensured to be stable and reliable.

The root of the guiding swing needle 22 is arc-shaped, one side of the first stop block 231 far away from the second stop block 232 is provided with an arc-shaped notch corresponding to the root of the guiding swing needle 22, and the root of the guiding swing needle 22 is movably abutted with the arc-shaped notch at the side part of the first stop block 231, so that the guiding swing needle 22 is tightly abutted with the first stop block 231, the compact coordination among all parts can be improved, the upper side of the guiding swing needle 22 is connected with the side edge of the first stop block 231 in a gapless manner, and the smooth and unimpeded manner when the locking pin 114 slides along the upper slide rail 211 in the slide groove 21 can be ensured, and the abrasion of all parts is reduced.

The cross section of the sliding rail 111 is "T", the cross section of the inner cavity of the sliding block 112 is "cross" shaped, the sliding block 112 is nested and connected with the sliding rail 111 through the "cross" inner cavity, thus, the matching degree of the sliding block 112 and the sliding rail 111 can be improved, the sliding block 112 is limited to slide linearly along the sliding rail 111 in the up-down direction, and the locking pin 114 can precisely cooperate with the limiting component 2 and slide smoothly.

The elastic component installed between the sliding block 112 and the sliding rail 111 is a spring 113, the spring 113 has good elasticity and high strength, is easy to restore to original shape after being deformed, can be repeatedly pulled and stretched, has long service life, and is easy to install and fix.

The bottom of the sliding rail 111 is provided with a horizontal extension baffle 115, one end of the spring 113 is fixedly connected with the extension baffle 115, and the other end of the spring 113 is fixedly connected with the side wall of the inner cavity of the sliding block 112. The extension baffle 115 can play a limiting role when the sliding block 112 slides down along the sliding rail 111, so that the locking pin 114 cannot be accurately abutted with the limiting component 2 due to the fact that the sliding block 112 is separated from the sliding rail 111 is prevented. The two ends of the spring 113 are fixedly connected with the extension baffle 115 and the inner cavity of the sliding block 112 respectively, so that the sliding block 112 is stable, reliable, durable and beneficial to providing stable and effective traction force.

The left and right sides symmetry of locking seat 11 is provided with slide rail 111, slider 112 installs on slide rail 111 of locking seat 11 one side, like this, can improve the commonality of locking part 1, and locking part 1 of same mould production can be general in the left side and the right side of drawer backplate 31, and application scope is wide, is convenient for discern the installation moreover, is favorable to improving processing and installation effectiveness.

The front side of the mounting plate 12 is provided with a horizontal L-shaped clamping plate 121 in a vertically symmetrical manner, the openings of the two L-shaped clamping plates 121 are opposite to each other to form a horizontal clamping groove, the locking seat 11 is nested in the clamping groove, namely, the upper side and the lower side of the locking seat 11 are respectively nested and connected with the corresponding L-shaped clamping plates 121, so that the locking seat 11 is stably and reliably mounted on the mounting plate 12, and the mounting plate 12 is provided with the two L-shaped clamping plates 121.

An adjusting and positioning component 13 is further arranged between the locking seat 11 and the mounting plate 12, the adjusting and positioning component 13 is used for adjusting and limiting the displacement of the locking seat 11 relative to the mounting plate 12 in the left-right direction, the adjusting and positioning component 13 comprises a limiting ruler 131 and a rotary poking piece 132 which are arranged on the front surface of the locking seat 11, and the limiting ruler 131 is composed of a plurality of concave holes 1311 which are distributed on the surface of the locking seat 11 in a fan shape; the bottom end of the rotary pulling piece 132 is movably connected with the locking seat 11 and the mounting plate 12 through a pivot, an elastic piece 1321 is arranged in the middle of the rotary pulling piece 132, and a protruding needle 1322 matched with the concave hole 1311 is arranged on the back surface of the elastic piece 1321; the rotary pulling piece 132 is abutted against the concave hole 1311 of the limit ruler 131 through a protruding needle 1322 on the back surface of the elastic piece 1321. When the locking seat 11 needs to be adjusted in a left-right movement mode so that the locking pin 114 and the limiting component 2 are in accurate and moderate butt joint, the rotary pulling piece 132 can be pulled clockwise or anticlockwise, when the rotary pulling piece 132 rotates, the protruding needle 1322 on the back face of the elastic piece 1321 can be clamped into any concave hole 1311 on the limiting ruler 131 to move along with the rotation, so that the locking seat 11 is driven to move left and right, when the locking seat 11 is adjusted in place, the protruding needle 1322 on the back face of the elastic piece 1321 is clamped into the corresponding concave hole 1311 to clamp and position the locking seat 11, in the adjusting process, when the rotary pulling piece 132 rotates anticlockwise, the locking seat 11 is driven to move left, and when the rotary pulling piece 132 rotates clockwise, the locking seat 11 is driven to move rightwards, so that the locking seat 11 can be adjusted and positioned simply, quickly and accurately and stably, and cooperatively and reliably assembling the locking pin 114 and the limiting component 2 is improved.

Four first mounting holes 122 are symmetrically formed in the mounting plate 12 of the locking component 1, through holes 116 corresponding to the first mounting holes 122 are formed in the locking seat 11, two second mounting holes 25 are diagonally formed in the limiting component 2, and the first mounting holes 122 and the second mounting holes 25 are countersunk screw holes, so that self-tapping screws can penetrate through the first mounting holes 122 or the second mounting holes 25 to fixedly mount the locking component 1 and the limiting component 2 on the drawer backboard 31 and the drawer bin side plate 41 respectively, the locking component is firm and stable, screw heads are hidden in the mounting holes, and the appearance flatness is high.

As shown in fig. 8 to 12, the locking device of the sliding drawer of the present invention is installed as follows: firstly, a self-tapping screw is adopted to pass through a through hole 116 on the locking seat 11 and a first mounting hole 122 on the mounting plate 12 to horizontally mount the locking component 1 on the left upper corner of the rear side of the drawer backboard 31 of the drawer 3, and after mounting, the end cap of the self-tapping screw is hidden in the first mounting hole 122, so that the left-right movement adjustment of the locking seat 11 on the mounting plate 12 is not hindered;

then, the mounting position of the limiting component 2 is determined on the inner side of the drawer bin side plate 41, the mounting position of the limiting component 2 can be ensured to be accurately butted with the locking pin 114 on the locking component 1 when the drawer is pulled open, then the limiting component 2 is horizontally mounted on the drawer bin side plate 41 by adopting a self-tapping screw to pass through the second mounting hole 25 on the limiting component 2, and the limiting component 2 and the locking component 1 are ensured to be positioned on the same horizontal line in the sliding direction of the drawer 3, namely the mounting of the locking device is completed;

finally, a drawer guide rail 33 is arranged between the side edge of the drawer bottom plate 32 and the drawer bin side plate 41, and the drawer 3 is pushed into the drawer bin 4 along the drawer guide rail 33, so that the integral assembly of the drawer 3 is completed.

As shown in fig. 13-14, in order to eliminate the influence of the machining dimension error of the drawer 3 and the drawer bin 4, the locking pin 114 is fully abutted with the limiting component 2, when the locking seat 11 needs to be adjusted in a left-right movement relative to the mounting plate 12, the rotary shifting plate 132 can be shifted clockwise or anticlockwise, so as to drive the locking seat 11 to move left and right, when the rotary shifting plate 132 rotates anticlockwise, the locking seat 11 is driven to move left, when the rotary shifting plate 132 rotates clockwise, the locking seat 11 is driven to move right, and after the locking seat 11 is adjusted in place, the protruding pins 1322 on the back of the elastic piece 1321 are clamped into the corresponding concave holes 1311 so as to clamp and position the locking seat 11, so that the locking seat 11 can be adjusted and positioned simply, quickly, accurately and stably, and the assembly coordination and reliability of the locking pin 114 and the limiting component 2 are improved.

As shown in fig. 5 to 12, the locking device of the sliding drawer of the present invention is used as follows:

in the closed state of the drawer 3, the needle tip of the guide balance needle 22 falls down and is overlapped on the bottom edge of the chute 21 due to the action of gravity, so that the upper slideway 211 in the chute 21 is opened;

when the drawer 3 needs to be pulled out for use, the drawer 3 is pulled out horizontally until the locking part 1 is in butt joint with the limiting part 2, then the locking pin 114 enters the chute 21 from the opening of the chute 21 and slides obliquely upwards along the upper slideway 211, in the sliding process, the sliding block 112 ascends along the sliding rail 111 so that the spring 113 between the two is in a stretching state, and a downward traction force is exerted on the sliding block 112, when the locking pin 114 slides to the upper parts of the first stop block 231 and the second stop block 232, the locking pin 114 falls into the V-shaped channel 233 along the gap between the two, and under the guidance of the V-shaped channel 233, the locking pin 114 rapidly falls into the limiting clamping groove 24 and is clamped, and meanwhile, a click sound is generated, so that the drawer 3 is locked in place, the limiting clamping groove 24 is designed into the V-shaped structure, the suitability of the locking pin 114 and the limiting clamping groove 24 can be improved, the locking pin 114 is tightly clamped, and the locking pin 114 is prevented from slipping, and thus the drawer 3 cannot be easily closed back, in the process, the spring 113 between the sliding block 112 and the sliding rail 111 is always in a tensioning state, and the locking pin 114 is subjected to the downward traction force;

when the drawer 3 is needed to be closed after use, the drawer 3 is pulled outwards by slight force, the locking component 1 moves along with the drawer 3, so that the locking pin 114 on the sliding block 112 is driven to slide along the V-shaped channel 233 and separate from the limiting clamping groove 24, when the locking pin 114 slides out of the V-shaped channel 233 and falls into the lower slideway 212 in the sliding groove 21 under the tensile force of the spring 113, a click sound is generated, which indicates that the drawer 3 is unlocked, then the drawer 3 is pushed back, the locking pin 114 slides backwards along with the locking pin to jack up the guiding balance needle 22, so that the lower slideway 212 of the sliding groove 21 is completely opened, the drawer 3 is pushed back continuously, the locking pin 114 slides out of the sliding groove 21 along the lower slideway 212, finally, the locking component 1 is separated from the limiting component 2, and the drawer 3 can be pushed back to the position and closed.

In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are provided by way of example only and are not intended to limit the scope of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The locking device of the sliding drawer is arranged between the drawer back plate and the drawer bin side plate and is used for locking the pulling-out state of the sliding drawer, and is characterized by comprising a locking part and a limiting part;

the front of the limiting component is provided with a chute, one end of the chute is provided with an opening pointing to the rear of the drawer, a guide swing needle and a limiting stop block are arranged in the chute, the root of the guide swing needle is in pivot connection with the chute, the guide swing needle can swing up and down so as to divide the inner cavity of the chute into an upper slideway and a lower slideway, the limiting stop block is positioned at the rear side of the guide swing needle, the rear side of the limiting stop block is provided with a V-shaped limiting clamping groove, and the limiting component is arranged at the inner side of a side plate of the drawer bin;

the locking component is vertically and slidably connected with the sliding groove of the limiting component through the locking pin, when the drawer is pulled open, the locking pin slides into the limiting clamping groove along the upper sliding way in the sliding groove, so that the drawer is locked, the drawer cannot be pushed back, when the drawer is closed, the drawer is pulled outwards, the locking pin moves out of the limiting clamping groove, and then the drawer is pushed back, so that the locking pin slides out of the sliding groove along the lower sliding way, and the locking component and the limiting component are separated.

2. The locking device of a sliding drawer according to claim 1, wherein the limit stop comprises a first stop and a second stop, the first stop and the second stop are arranged at intervals to form a V-shaped channel therebetween, and the limit slot is arranged on one side of the first stop close to the second stop.

3. The locking device of a sliding drawer according to claim 2, wherein the root of the guiding swing needle is arc-shaped, an arc-shaped notch corresponding to the root of the guiding swing needle is arranged on one side of the first stop block away from the second stop block, and the root of the guiding swing needle is movably abutted with the arc-shaped notch.

4. The locking device of a sliding drawer according to claim 1, wherein the cross section of the sliding rail is T-shaped, the cross section of the inner cavity of the sliding block is cross-shaped, and the sliding block is connected with the sliding rail in a nested manner.

5. The locking device of a sliding drawer according to claim 4, wherein the elastic member installed between the slider and the slide rail is one of a spring or a rubber string.

6. The locking device of a sliding drawer according to claim 5, wherein a horizontal extension baffle is arranged at the bottom of the sliding rail, one end of the spring is fixedly connected with the extension baffle, and the other end of the spring is fixedly connected with the side wall of the inner cavity of the sliding block.

7. The locking device of a sliding drawer as recited in claim 6, wherein the sliding rails are symmetrically disposed on both left and right sides of the locking base, and the sliding block is mounted on the sliding rail on one side of the locking base.

8. The locking device of a sliding drawer according to any one of claims 1 to 7, wherein the front surface of the mounting plate is provided with an L-shaped clamping plate in an up-down symmetrical manner, the two L-shaped clamping plates are opposite in opening to form a horizontal clamping groove, and the upper side edge and the lower side edge of the locking seat are respectively connected with the corresponding L-shaped clamping plates in a nested manner.

9. The locking device of a sliding drawer according to claim 8, wherein an adjusting and positioning member is provided between the locking seat and the mounting plate, the adjusting and positioning member being used for adjusting and limiting the left-right displacement of the locking seat relative to the mounting plate;

the adjusting and positioning part comprises a limiting ruler and a rotary pulling piece, wherein the limiting ruler and the rotary pulling piece are arranged on the front surface of the locking seat, and the limiting ruler is formed by a plurality of concave holes which are distributed on the surface of the locking seat in a fan shape;

the bottom end of the rotary plectrum is movably connected with the locking seat and the mounting plate through a pivot, an elastic piece is arranged in the middle of the rotary plectrum, and a convex needle matched with the concave hole is arranged on the back surface of the elastic piece;

the rotary shifting piece is abutted with the concave hole of the limit ruler through the convex needle on the back of the elastic piece.

10. The locking device of a sliding drawer according to claim 9, wherein at least two first mounting holes are provided on the mounting plate of the locking member, and a through hole corresponding to the first mounting holes is provided on the locking seat;

and at least two second mounting holes are formed in the limiting part.