CN112796571A - Locking structure of cabinet door leaf - Google Patents

Abstract

The cabinet door leaf locking structure comprises a cabinet door frame and a cabinet door leaf arranged in the cabinet door frame, wherein a rotating handle mechanism and a door inserting mechanism are arranged on the cabinet door leaf, the rotating handle mechanism is arranged in the middle of the side edge of the cabinet door leaf, and the door inserting mechanism is arranged on the inner side of the top or the bottom of the cabinet door leaf; the door inserting mechanism is characterized by comprising a bolt rod and a bolt reset spring, wherein the bolt reset spring is sleeved on the bolt rod and used for pushing the bolt rod to reset outwards; the rotating handle mechanism comprises a rotating handle arranged on the cabinet door leaf, the rotating handle comprises a handle exposed out of the cabinet door leaf and a rotating shaft connected with the handle, the rotating shaft penetrates through the inner side end of the cabinet door leaf and is provided with a claw-shaped shifting piece, and the shifting piece is connected with the lower end of the plug pin rod through a connecting rod.

Description

Locking structure of cabinet door leaf

Technical Field

The invention relates to the technical field of storage devices, in particular to a cabinet door leaf locking structure.

Background

The locker is a common storage device, and a safety lock is generally arranged on a cabinet door for the purpose of protecting property in the locker. For example, the chinese utility model patent with publication number CN 205277107U and title of the invention "anti-theft power distribution cabinet" discloses an anti-theft power distribution cabinet, which has the key points of technical scheme that the anti-theft power distribution cabinet comprises a cabinet body, a cabinet door hinged with the cabinet body, and a door lock fixedly connected to the cabinet door; the door lock comprises a rotating part, a rotating shaft rotationally connected with the cabinet door and a clamping end detachably connected with one end of the rotating shaft, and the rotating shaft is connected and matched with the rotating part through a bolt; the joint end be provided with the spring bolt along its length direction slant upper right side, go up and be provided with down the spring bolt between spring bolt and the joint end, lower spring bolt and the both sides that the spring bolt is located the locating hole respectively of locking down, go up the spring bolt and lock the spring bolt down and articulate with last connecting rod, lower connecting rod respectively, and the one end that upper and lower spring bolt was kept away from to upper and lower connecting rod respectively with cabinet door sliding connection and with cabinet body joint. The door lock is simple and practical in structure and can play a certain anti-theft role, but the door lock still has more use problems, for example, when the door is closed, the rotating piece is required to rotate manually to drive the upper lock tongue and the lower lock tongue to move so as to realize the closing of the cabinet door and the clamping of the cabinet body, and the inconvenience is brought to the use.

Disclosure of Invention

Aiming at the problems in the prior art, in order to improve the use convenience of the cabinet door leaf, the invention provides an improved cabinet door leaf locking structure, which comprises a cabinet door frame and a cabinet door leaf arranged in the cabinet door frame, wherein a rotating handle mechanism and a door inserting mechanism are arranged on the cabinet door leaf, the rotating handle mechanism is arranged in the middle of the side edge of the cabinet door leaf, and the door inserting mechanism is arranged on the inner side of the top or the bottom of the cabinet door leaf; the door inserting mechanism is characterized by comprising a bolt rod and a bolt reset spring, wherein the bolt reset spring is sleeved on the bolt rod and used for pushing the bolt rod to reset outwards, the upper end part of the bolt rod is in a slope shape and is provided with an upper end inclined plane, the upper end inclined plane faces towards the inner side of the cabinet door leaf, and a bolt hole used for receiving the upper end part of the bolt rod is formed in the cabinet door frame; the rotary handle mechanism comprises a rotary handle arranged on the cabinet door leaf, the rotary handle comprises a handle exposed out of the cabinet door leaf and a rotating shaft connected with the handle, the rotating shaft penetrates through the inner side end of the cabinet door leaf and is provided with a claw-shaped shifting piece, and the shifting piece is connected with the lower end part of the bolt rod through a connecting rod; a travel difference mechanism is arranged between the lower end part of the plug pin rod and the connecting rod, the travel difference mechanism comprises a strip hole which is arranged in an up-and-down extending manner and a movable block which is movably arranged in the strip hole, and the strip hole and the movable block are respectively arranged on the lower end part of the plug pin rod and the connecting rod; when the cabinet door leaf is not covered, the bolt rod outwards resets and extends under the thrust action of the bolt resetting spring, the strip-shaped holes and the movable blocks are mutually hooked, when the cabinet door leaf is covered, the bolt rod is jacked by the cabinet door frame in advance by taking the upper end inclined plane as a medium, the movable blocks relatively slide in the strip-shaped holes, the bolt rod slides into the bolt holes under the thrust action of the bolt resetting spring to lock the cabinet door leaf, and at the moment, the strip-shaped holes and the movable blocks are hooked again; when the rotary handle is rotated, the bolt rod can be pulled by the connecting rod to retract into the door leaf so as to open the door, and when the rotary handle is released, the bolt return spring pulls the bolt rod and the rotary handle to return.

The upper end inclined plane faces towards the inner side of the cabinet door leaf, the inner side of the cabinet door leaf refers to that one side of the cabinet door leaf facing towards the inner direction of the cabinet is also facing towards one side of the cabinet door frame, and this is to enable the cabinet door frame to generate an acting force which pushes the latch rod to move towards the inner part of the cabinet door leaf along the axial direction on the upper end inclined plane when being contacted with the latch rod, so that the latch rod can move towards the inner part of the cabinet door leaf conveniently.

In one embodiment, the running difference mechanism comprises the elongated hole and a movable block, the elongated hole is arranged on the latch rod, the movable block is arranged on the connecting rod, the latch rod is in a state of extending out of a cabinet door leaf, the bottom end of the elongated hole is buckled on the movable block, if the latch rod retracts into the cabinet door leaf, the latch rod can move for an empty stroke until the top end of the elongated hole touches the movable block, and the connecting rod cannot be driven by the latch rod in the stroke, namely the moving stroke of the connecting rod in the stroke of the latch rod is zero.

The bolt rod is provided with a bolt rod lower end, a connecting rod and a strip hole, the strip hole and the movable block are respectively arranged at the lower end of the bolt rod and the connecting rod, the arrangement form of the strip hole and the movable block at least comprises the following two types, the first type is that the strip hole is arranged on the bolt rod, the movable block is arranged on the connecting rod, and the second type is that the strip hole is arranged on the connecting rod, and the movable block is arranged on the bolt rod; the idle stroke of the traveling difference mechanism can be utilized to realize that the connecting rod is not driven when the plug rod moves downwards, but the connecting positions of the elongated hole and the movable block are different in the two arrangement forms, the bottom end of the elongated hole is connected with the movable block in the first arrangement form, and the connecting rod does not move when the plug rod moves downwards, namely the elongated hole slides on the movable block; in the second arrangement, the top end of the elongated hole is connected with the movable block, and the connecting rod is not moved when the bolt rod moves downwards, namely the movable block slides on the elongated hole.

According to the technical scheme, compared with the prior art, the invention has the beneficial technical effects that: firstly, the upper end inclined plane is arranged at the upper end part of the bolt rod, so that the bolt rod can be retracted towards the inside of the cabinet door leaf when being pressed by the cabinet door frame, manual screwing operation is not needed, and the use convenience of the cabinet door leaf is improved; secondly, the bolt reset spring is arranged in the door inserting mechanism, so that the bolt rod contracted in the cabinet door leaf is reset outwards to move to lock the cabinet door leaf, and the problem that the bolt rod can extend out to lock the door only by manual screwing in the prior art is solved; in addition, the bolt rod can be hooked with the connecting rod through the bolt reset spring and drives the rotating handle to rotate reversely to reset, so that preparation is provided for next door opening, and the use convenience of the cabinet door leaf is greatly improved; thirdly, a traveling difference mechanism is arranged between the lower end of the bolt rod and the connecting rod, and the connecting rod can drive the bolt rod to move towards the inside of the cabinet door leaf through the traveling difference mechanism, and the bolt rod can independently contract inwards to move without driving the connecting rod, so that the cabinet door leaf can be closed even if the connecting rod is locked, and the use convenience of the cabinet door leaf is greatly improved.

The door inserting mechanism further comprises a seat body, the seat body is arranged on the inner side of the cabinet door leaf, a seat inner cavity is formed in the seat body, the bolt rod penetrates through the seat inner cavity of the seat body from top to bottom, and the bolt resetting spring is arranged in the seat inner cavity and sleeved on the bolt rod; a seat window which is communicated with the seat inner cavity and extends along the vertical direction is arranged on the cavity wall of the seat inner cavity, a stabilizing column is detachably arranged on the plug pin rod, and the stabilizing column extends into the seat window. The seat inner cavity is a space defined by the wall body of the seat body; the wall bodies of the seat body comprise an upper window wall, a lower window wall, a left window wall and a right window wall, and the upper window wall and the lower window wall can be matched with the stabilizing column so as to limit the maximum stroke of the bolt rod in up-and-down movement; the ability to use one of the upper or lower window walls to cooperate with the stabilizing post to define a maximum travel of movement of the latching lever in either the up or down direction; the beneficial effect that so set up lies in: firstly, the upper window wall and the lower window wall not only limit the upper and lower moving strokes of the stabilizing column, but also enable the bolt rod to be clamped in the seat body so as to be difficult to fall off; secondly, the stabilizing column is arranged on the bolt rod, and the upper window wall and the lower window wall simultaneously limit the distance of the upper end inclined plane of the bolt rod extending out of the seat body, so that the contact between the upper end inclined plane and the cabinet door frame is controlled; thirdly, the stabilizing columns move up and down under the guidance of the left window wall and the right window wall of the seat window, so that the stability of the bolt rod during movement is greatly improved.

The technical scheme is that the knob mechanism further comprises a knob panel, the knob panel is embedded on the cabinet door leaf and provided with a pit, a handle of the knob is arranged in the pit, a rotating shaft of the knob penetrates through the bottom wall of the pit, the inner side end of the rotating shaft of the knob is connected with the shifting sheet, and the shifting sheet and the handle are respectively arranged on two sides of the bottom wall of the pit. The poking pieces and the handles are respectively arranged on two sides of the bottom wall of the pit, one side of each poking piece and one side of each handle, which are positioned inside the cabinet door leaf, are the inner sides of the bottom wall of the pit, the corresponding side of each poking piece, which is positioned outside the cabinet door leaf, is the outer side of the bottom wall of the pit, namely the poking pieces are positioned on the inner sides of the bottom wall of the pit, and the handles are positioned on the outer sides of the bottom wall; disposing the handles in the pockets not only facilitates protecting the handles but also improves the integrity of the knob panel.

The handle mechanism further comprises a positioning plate arranged on a rotating shaft of the rotating handle, the positioning plate is also positioned on the inner side of the outer side of the bottom wall of the concave pit and is arranged with the poking sheet in a front-back mode, and an arc-shaped concave position is arranged on the outer periphery of the positioning plate; the knob panel is also provided with a lock cylinder, an eccentric column is arranged on a rotating shaft of the lock cylinder, when the rotary handle is reset and the bolt rod is reset and extends out of the cabinet door frame, the arc-shaped concave position faces the eccentric column, and when the rotating shaft of the lock cylinder is rotated, the eccentric column can be screwed into the arc-shaped concave position so as to lock the positioning plate and prevent the positioning plate from rotating. The positioning plate is a component which can rotate together with the turning handle and the shifting piece, and the eccentric column is used for limiting the positioning plate, so that the positioning plate can be locked and cannot rotate, and the turning handle and the shifting piece can not rotate, so that the cabinet door leaf can be locked on the cabinet door frame.

The way of driving the rotation of the lock cylinder is various, and the lock cylinder can be driven by an electric driver or rotated by a mechanical key.

The technical scheme is that the door inserting mechanisms are arranged on the inner sides of the top and the bottom of the cabinet door leaf respectively, a pair of claw-shaped poking pieces are arranged at an angle of 180 degrees, and the claw-shaped poking pieces are connected with the lower end parts of the bolt rods of the two door inserting mechanisms respectively through connecting rods. The poking piece comprises a first poking piece arm and a second poking piece arm, the first poking piece arm and the second poking piece arm are arranged in an angle of 180 degrees, so that linear movement distances generated when the first poking piece arm and the second poking piece arm rotate by the same angle are the same, and the movement distances between the connecting rod and the plug pin rods driven by the poking piece are basically the same, so that the two plug pin rods can be separated from the plug pin holes simultaneously when the door is unlocked, and the convenience of opening the door is improved.

The technical scheme of the door opening and closing device for the refrigerator is that the door opening and closing device comprises a door frame, a door opening and closing mechanism, a door inserting mechanism and a door rotating mechanism, wherein the door opening and closing mechanism is arranged on the door frame, and the door opening and closing mechanism is arranged on the door frame. This facilitates the management of different spaces within the cabinet.

The technical scheme is that the cabinet door leaf is provided with a glass window, and the rotating handle mechanism is arranged on the side edge of the glass window. Therefore, articles in the cabinet can be observed through the glass window, so that the articles in the cabinet can be managed conveniently and can be quickly selected to correspond to the cabinet door leaf.

The invention has the characteristics and advantages, so the invention can be applied to an improved cabinet door leaf locking structure.

Drawings

FIG. 1 is a schematic axial view of a cabinet according to the present invention;

FIG. 2 is a schematic view of an exploded structure of the cabinet door leaf lock;

FIG. 3 is an exploded view of the door latch mechanism;

FIG. 4 is a front view of the door latch mechanism;

FIG. 5 is an exploded view of the twist grip mechanism;

fig. 6 is a front view, a sectional view, and a schematic view of the door latch mechanism, showing a second embodiment of the door latch mechanism.

Detailed Description

The locking structure of the cabinet door leaf applying the technical scheme of the invention is further explained with the accompanying drawings.

As shown in fig. 1, the storage cabinet comprises a cabinet body and two sets of door leaf locking structures installed on the cabinet body, the door leaf locking structures comprise a cabinet door frame 1 and door leaves 2 installed in the cabinet door frame 1, four door leaves 2 are arranged in a frame opening area defined by the cabinet door frame 1, and the door leaves 2 are movably connected to the cabinet door frame 1 through hinges. The knob mechanism 21 and the door inserting mechanism 22 are mounted on each cabinet door leaf 2, and the door opening or closing actions between the two cabinet door leaves 2 are not related to each other. The rotating handle mechanism 21 is arranged in the middle of the side edge of the cabinet door leaf 2, and the door inserting mechanisms 22 are arranged on the top and the inner side of the bottom of the cabinet door leaf 2; the door inserting mechanism 22 is used for locking the cabinet door leaf 2 on the cabinet door frame 1 so as to realize a door locking function; the rotating handle mechanism 21 and the door inserting mechanism 22 are linked mechanisms, and the door inserting mechanism 22 can be driven to move by rotating the rotating handle mechanism 21 so as to open the cabinet door leaf 2.

In order to combine and lock the cabinet door 2 and the cabinet door frame 1, as shown in fig. 2 to 5, the door inserting mechanisms 22 arranged up and down have the same structure, but the installation directions are opposite, taking the door inserting mechanism 22 arranged at the upper part of the cabinet door as an example, the door inserting mechanism 22 includes a base 5, a latch rod 3 and a latch return spring 31, the base 5 is installed at the top of the inner side of the cabinet door 2, a base cavity 50 is arranged in the base 5, a first opening 51 and a second opening 52 communicating with the base cavity are respectively arranged at the upper and lower ends of the cavity wall of the base 5, the latch rod 3 in a strip shape includes an upper end 32 and a lower end 33, the latch rod 3 passes through the base cavity 50 of the base 5 from top to bottom through the first opening 51 and the second opening 52, the lower end 33 passes through the second opening 52 and extends out to the lower part of the base 5, the upper end portion 32 is exposed above the seat body 5 and extends to the outer side of the cabinet door leaf; the cabinet door frame 1 is provided with a latch hole 11 for receiving the upper end 32 of the latch rod 3, and the latch holes 11 correspond to the positions of the latch rods 3 one by one.

In order to allow the upper end portion 32 of the latch rod 3 to smoothly enter the latch hole 11, the lower and upper end portions 32 of the latch rod 3 are sloped to have a lower and upper end slope 321, and the upper end slope 321 faces the inner side of the cabinet door 2, so that when the cabinet door 2 is closed and touches the cabinet door frame 1, the cabinet door frame 1 can press the upper end slope 321 and push the latch rod 3 to move into the cabinet door 2. Further, the latch return spring 31 is disposed in the seat inner cavity 50 and sleeved on the latch rod 3, one end of the latch return spring 31 is pressed against the middle of the latch rod 3, the other end of the latch return spring is pressed against the sidewall body of the second opening 52, and the latch return spring 31 is configured to push the latch rod 3 to move to return outward, so that when the cabinet door leaf 2 is closed to a position flush with the cabinet door frame and the upper end portion 32 of the latch rod 3 is aligned with the latch hole 11, the latch rod 3 extends out of the cabinet door leaf 2 and is inserted into the latch hole 11 under the action of the latch return spring 31. Therefore, the door locking action can be realized only by pushing the door leaf 2, the problem that the door can be closed only by rotating the knob mechanism 21 in the prior art is solved, and the use convenience of the cabinet door leaf 2 is greatly improved.

Further, in order to limit the maximum stroke of the latch rod 3 moving outward, two specific embodiments of the latch rod 3 limiting structure are described below

In a first embodiment, as shown in fig. 2 to 4, a seat window 53 communicating with the seat inner cavity 50 and extending in the vertical direction is provided on the cavity wall of the seat inner cavity 50, a stabilization post 35 is detachably mounted on the plug rod 3, the stabilization post 35 is mounted in a mounting hole of the plug rod 3 after the plug rod 3 is inserted into the seat inner cavity 50, and the stabilization post 35 extends into the seat window 53. The seat window 53 includes upper and lower window walls 531, 532 arranged one above the other and left and right window walls 533, 534 arranged one to the left, the upper window wall 531 of the seat window 53 being cooperable with the stabilizing post 35 for defining a maximum stroke of upward movement of the latch lever 3, the lower window wall 532 of the seat window 53 being cooperable with the stabilizing post 35 for defining a maximum stroke of downward movement of the latch lever 3. When the latch rod 3 is pressed by the cabinet door frame 1 to move towards the inside of the cabinet door leaf 2, the lower window wall 532 can limit the maximum downward movement position of the latch rod 3, so that the upper end 32 of the latch rod 3 cannot be completely sunk into the cabinet door leaf 2, and the problem that the latch rod 3 is blocked is reduced; when the latch rod 3 is not under the external pressure, the upper window wall 531 can prevent the latch rod 3 from being completely ejected out of the seat 5 by the latch return spring 31, and allow the upper end slope 321 to just extend out and engage with the cabinet door frame 1. The left window wall 533 and the right window wall 534 disposed at left and right sides can cooperate with the stabilizing post 35 to guide the latch rod 3 to move up and down, thereby improving the movement stability of the latch rod 3.

In a second embodiment, as shown in fig. 6, the stabilizing post 35 is provided on the body of the latch rod 3 and is reversely buckled in a convex shape, the stabilizing post 35 is integrally formed with the latch rod 3, the stabilizing post 35 is provided with a slanted buckling surface 358 arranged in an inclined manner and a buckling plane 359 engaged with the upper window wall 531 of the seat window 53, when the stabilizing post 35 is inserted into the seat cavity of the seat body 5 along with the latch rod 3, the stabilizing post 35 can be forced to slide into the seat window 53 through the slanted buckling surface 358, and the maximum upward movement stroke of the latch rod 3 can be limited and the latch rod 3 can be clamped in the seat body 5 through the combination of the buckling plane 359 and the upper window wall 531, which has a simple structure and low cost.

In order to conveniently open the cabinet door leaf 1, the knob mechanism 21 comprises a knob 6 mounted on the cabinet door leaf 2, the knob 6 comprises a handle 61 exposed on the cabinet door leaf 2 and a rotating shaft 62 connected to the outer end of the handle 61, the rotating shaft 62 penetrates through the cabinet door leaf 2, a claw-shaped shifting piece 7 is mounted on the inner side end of the rotating shaft 62, and the rotating shaft 62 and the shifting piece 7 can be driven to rotate together by rotating the handle 61. Because the top and the bottom of the cabinet door leaf 2 are respectively provided with the door inserting mechanisms 22, the pair of claw-shaped poking pieces 7 are respectively connected with the lower end parts 33 of the bolt rods 3 of the two door inserting mechanisms 22 through the connecting rod 8. In order to simultaneously drive the two door inserting mechanisms 22 to open the cabinet door 1 when the door is opened, the pair of dials 7 includes two first dial arms 71 and second dial arms 72 extending outward, the first dial arms 71 and the second dial arms 72 are arranged at an angle of 180 °, the head ends of the two connecting rods 8 are movably connected to the first dial arms 71 and the second dial arms 72, and the tail end of the connecting rod 8 is connected to the lower end 33 of the latch rod 3, so that the connecting rod 8 is driven to move by the same distance when the first dial arms 71 and the second dial arms 72 rotate, and the two latch rods 3 can be driven to move to be separated from the latch holes 11 at the same time to open the cabinet door 2.

Further technical solution may also be, the knob mechanism 21 further includes a knob panel 63, the knob panel 63 is embedded on the cabinet door leaf 2, the knob panel 63 has a recess 630, the handle 61 of the knob 6 is disposed in the recess 630 and can rotate in the recess 630, the knob panel 63 further includes a recess bottom wall 631, a through hole is disposed in the middle of the recess bottom wall 631, the rotation shaft 62 of the knob 6 passes through the through hole of the recess bottom wall 631 and then the inner side end thereof is connected to the dial 7, and the dial 7 and the handle 61 are respectively disposed on two sides of the recess bottom wall 631. The benefit of this arrangement is that the handle 61 is protected and the integrity of the cabinet door leaf 2 is improved.

Further technical solution may also be that, as shown in fig. 2 to 5, a travel difference mechanism is provided between the lower end of the latch rod 3 and the connecting rod 8, the travel difference mechanism includes a long hole 36 and a movable block 81, and the movable block 81 is movably disposed in the long hole 36. As shown in fig. 5, in the first arrangement of the traveling difference mechanism, the elongated hole 36 is provided at the lower end portion 33 of the latch rod 3 and extends axially upward and downward, and the movable block 81 is fixedly provided at the tail end of the connecting rod 8; when the latch rod 3 is in a state of extending outward from the cabinet door 2, the bottom end of the elongated hole 36 is fastened with the movable block 81, and in this state, the latch rod 3 can be pulled by the connecting rod 8 to retract into the cabinet door 2, and the latch rod 3 can be moved by a certain stroke toward the inner side of the cabinet door 2 by an external pushing force without moving the connecting rod 8. In this way, by the traveling difference mechanism, when the door is opened, the handle 61 is rotated to pull the latch rod 3 to move towards the inner side direction of the cabinet door leaf 2, so that the door is opened; when the door is closed, the handle 61 does not need to be rotated, and the latch rod 3 can move towards the inner side direction of the cabinet door leaf 2 only by directly pushing the cabinet door leaf 2, so that the door is locked, and the convenience in use of the cabinet door leaf 2 is greatly improved.

In a second arrangement of the traveling difference mechanism, as shown in fig. 6, the movable block 81 is fixedly disposed on the lower end portion 33 of the latch rod 3 and can move up and down along with the latch rod 3, the elongated hole 36 is disposed at the rear end portion of the connecting rod 8 and extends in the axial up-down direction, and the movable block 81 is movably disposed in the elongated hole 36; when the latch rod 3 is in the state of extending outward from the cabinet door 2, the top end of the elongated hole 36 and the movable block 81 are fastened together, and this arrangement also achieves the door opening and locking function as in the first arrangement.

Further, the handle mechanism 21 may further include a positioning plate 9 mounted on the rotating shaft 62 of the handle 6, and the positioning plate 9 is also located inside the bottom wall of the recess 630 and arranged in front of and behind the paddle 7, and can rotate together with the paddle 7 under the driving of the rotating shaft 62. An arc-shaped concave position 91 is arranged on the outer periphery of the positioning plate 9, and the arc-shaped concave position 91 rotates along with the positioning plate 9; a lock cylinder 64 is further installed on the knob panel 63, an eccentric column 641 is installed on the rotation shaft of the lock cylinder 64, when the rotary handle 6 is reset and the latch rod 3 is reset to extend out of the cabinet door frame 1, the arc-shaped concave position 91 faces the eccentric column 641, and when the rotation shaft of the lock cylinder 64 is rotated, the eccentric column 641 is rotated into the arc-shaped concave position 91 to lock the positioning plate 9 against rotation. The lock cylinder 64 can lock the positioning plate 9 and the knob mechanism 21, so that the positioning plate and the knob mechanism can not be rotated, and the cabinet door leaf 2 can be locked on the cabinet door frame 1 and can not be opened; however, due to the travel difference mechanism, the locking of the positioning plate 9 by the lock cylinder 64 does not affect the closing movement of the cabinet door 2. The way of driving the lock cylinder 64 to rotate is various, and the lock cylinder may be driven by an electric driver or rotated by a mechanical key, and the driving way used in the embodiment of the present invention is rotated by a mechanical key.

The following describes in detail the operational relationship between the respective members when the cabinet door 2 is closed or opened. When the cabinet door leaf 2 is not covered, the latch rod 3 is reset outwards and extends under the thrust of the latch reset spring 31, at this time, the strip-shaped hole 36 and the movable block 81 are hooked with each other, when the cabinet door leaf 2 is covered, the latch rod 3 is jacked up in advance by the cabinet door frame 1 by taking the lower end inclined plane 34 as a medium and moves towards the inner side of the cabinet door leaf 2, at this time, the movable block 81 is not moved, the strip-shaped hole 36 moves relative to the movable block 81, when the latch rod 3 corresponds to the latch hole 11, the latch rod 3 slides into the latch hole 11 under the thrust of the latch reset spring 31 to lock the cabinet door leaf 2, and at this time, the strip-shaped hole 36 and the movable block 81 are hooked again. The lock of the lock cylinder 64 on the positioning plate 9 is unlocked, the rotary handle 6 is rotated, the poking sheet 7 can pull the bolt rod 3 to retract towards the cabinet door leaf 2 through the connecting rod 8 so as to open the door, when the rotary handle 6 is released, the bolt return spring 31 pulls the bolt rod 3 and the rotary handle 6 to return, and in the door opening process, the long hole 36 and the movable block 81 are kept in a mutually hooked state.

Claims (8)

1. The cabinet door leaf locking structure comprises a cabinet door frame and a cabinet door leaf arranged in the cabinet door frame, wherein a rotating handle mechanism and a door inserting mechanism are arranged on the cabinet door leaf, the rotating handle mechanism is arranged in the middle of the side edge of the cabinet door leaf, and the door inserting mechanism is arranged on the inner side of the top or the bottom of the cabinet door leaf; the door inserting mechanism is characterized by comprising a bolt rod and a bolt reset spring, wherein the bolt reset spring is sleeved on the bolt rod and used for pushing the bolt rod to reset outwards, the upper end part of the bolt rod is in a slope shape and is provided with a lower upper end inclined plane, the upper end inclined plane faces towards the inner side of the cabinet door leaf, and a bolt hole used for receiving the upper end part of the bolt rod is formed in the cabinet door frame; the rotary handle mechanism comprises a rotary handle arranged on the cabinet door leaf, the rotary handle comprises a handle exposed out of the cabinet door leaf and a rotating shaft connected with the handle, the rotating shaft penetrates through the inner side end of the cabinet door leaf and is provided with a claw-shaped shifting piece, and the shifting piece is connected with the lower end part of the bolt rod through a connecting rod; a travel difference mechanism is arranged between the lower end part of the plug pin rod and the connecting rod, the travel difference mechanism comprises a strip hole which is arranged in an up-and-down extending manner and a movable block which is movably arranged in the strip hole, and the strip hole and the movable block are respectively arranged on the lower end part of the plug pin rod and the connecting rod; when the cabinet door leaf is not covered, the bolt rod outwards resets and extends under the thrust action of the bolt resetting spring, the strip-shaped holes and the movable blocks are mutually hooked, when the cabinet door leaf is covered, the bolt rod is jacked by the cabinet door frame in advance by taking the upper end inclined plane as a medium, the movable blocks relatively slide in the strip-shaped holes, the bolt rod slides into the bolt holes under the thrust action of the bolt resetting spring to lock the cabinet door leaf, and at the moment, the strip-shaped holes and the movable blocks are hooked again; when the rotary handle is rotated, the bolt rod can be pulled by the connecting rod to retract into the door leaf so as to open the door, and when the rotary handle is released, the bolt return spring pulls the bolt rod and the rotary handle to return.

2. The cabinet door leaf locking structure according to claim 1, wherein the door inserting mechanism further comprises a seat body, the seat body is installed inside the cabinet door leaf, a seat cavity is provided in the seat body, the bolt rod passes through the seat cavity of the seat body from top to bottom, and the bolt return spring is arranged in the seat cavity and sleeved on the bolt rod; a seat window which is communicated with the seat inner cavity and extends along the vertical direction is arranged on the cavity wall of the seat inner cavity, a stabilizing column is detachably arranged on the plug pin rod, and the stabilizing column extends into the seat window.

3. The cabinet door leaf locking structure according to claim 1 or 2, wherein the knob mechanism further comprises a knob panel, the knob panel is embedded on the cabinet door leaf, the knob panel is provided with a pit, a handle of the knob is arranged in the pit, a rotating shaft of the knob penetrates through the bottom wall of the pit, the inner side end of the rotating shaft is connected with the shifting piece, and the shifting piece and the handle are respectively arranged on two sides of the bottom wall of the pit.

4. The locking structure of a cabinet door leaf according to claim 3, wherein the knob mechanism further comprises a positioning plate mounted on the rotating shaft of the knob, the positioning plate is also positioned on the inner side of the outer side of the bottom wall of the concave pit and arranged in front of and behind the poking piece, and the outer periphery of the positioning plate is provided with an arc-shaped concave position; the knob panel is further provided with a lock cylinder, an eccentric column is arranged on a rotating shaft of the lock cylinder, when the rotary handle is reset and the bolt rod is reset and extends out of the cabinet door frame, the arc-shaped concave position faces the eccentric column, and when the rotating shaft of the lock cylinder is rotated, the eccentric column can be screwed into the arc-shaped concave position to lock the positioning plate and prevent the positioning plate from rotating.

5. The cabinet door leaf locking structure according to claim 4, wherein a rotary shaft driving the key cylinder is an electric driver or a mechanical key.

6. The cabinet door leaf locking structure according to claim 4, wherein one door latch mechanism is provided at each of the top and bottom inner sides of the cabinet door leaf, a pair of claw-shaped pieces are arranged at an angle of 180 °, and the pair of claw-shaped pieces are connected to the lower ends of the latch rods of the two door latch mechanisms by a connecting rod.

7. The cabinet door leaf locking structure according to claim 4, wherein two cabinet door leaves are arranged in the area of the opening defined by the cabinet door frame, each cabinet door leaf is provided with the knob mechanism and the door inserting mechanism, and the door opening or closing motions between the two cabinet door leaves are not related to each other.

8. The cabinet door leaf locking structure according to claim 4, wherein a glass window is provided on the cabinet door leaf, and the knob mechanism is provided at a side of the glass window.

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