CN116280685A - Linkage locking device and flat-top box using same - Google Patents

Abstract

The invention relates to a linkage locking device which comprises an unlocking push button, a linkage assembly and at least two locks, wherein the unlocking push button is connected with the linkage assembly, the linkage assembly is respectively connected with each lock, each lock is arranged at different positions, and the unlocking push button acts on the linkage assembly and respectively drives each lock to move simultaneously through the linkage assembly so as to realize the opening or closing of the lock. The invention also discloses a flat-mouth box using the device. The flat-mouth box disclosed by the invention can be recycled, has a certain anti-theft function, has the box-sealing capacity at the same time, and can realize full-automatic box sealing on an automatic packaging production line.

Description

Linkage locking device and flat-top box using same

Technical Field

The invention belongs to the technical field of lock catch connection, and particularly relates to a linkage lock catch device and a flat-mouth box using the same.

Background

Most of the existing flat-mouth boxes adopt cartons and are sealed by using adhesive tapes, so that the recycling cannot be realized, and the box does not have an anti-theft function. The locking mechanism is arranged on a part of the flat-top box, so that the flat-top box can be recycled and has an anti-theft function, but the flat-top box does not have the automatic box sealing capability and cannot be used on a full-automatic packaging production line.

On the other hand, the existing flat-mouth boxes mostly adopt a box mouth box sealing mode, and the box bottom box sealing structure does not exist yet.

Disclosure of Invention

The invention aims to solve the technical problem of providing the linkage locking device and the flat-mouth box using the same, which not only can be recycled and have a certain anti-theft function, but also have the box sealing capability at the same time on the box mouth and the box bottom, and can realize full-automatic box sealing on an automatic packaging production line.

The invention provides a linkage locking device which comprises an unlocking push button, a linkage assembly and at least two locks, wherein the unlocking push button is connected with the linkage assembly, the linkage assembly is respectively connected with each lock, each lock is arranged at different positions, and the unlocking push button acts on the linkage assembly and respectively drives each lock to move simultaneously through the linkage assembly so as to realize the opening or closing of the lock.

Further, a latch spring is provided at a rear side of each of the latches.

Further, the linkage assembly is a multi-link assembly.

Further, the multi-link assembly comprises a first link, a second link, a third link, a fourth link, a fifth link, a sixth link and a seventh link, the head end of the first link is movably connected with a left lock catch positioned at the left side, the tail end of the first link is movably connected with a push Niu Di rotating shaft arranged on an unlocking push button, the head end of the second link is movably connected with a push Niu Di rotating shaft arranged on the unlocking push button, the tail end of the second link is movably connected with the head end and the tail end of the third link, the tail end of the fourth link, the fifth link, the sixth link and the seventh link in sequence, the tail end of the seventh link is movably connected with a right lock catch positioned at the right side, the link assembly is arranged on a lower fixing plate, the lower fixing plate is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft respectively, the third link rotates around the first rotating shaft, the fourth link rotates around the second rotating shaft, and the sixth link rotates around the third rotating shaft.

Further, the multi-link assembly comprises a second link, a third link, a fourth link and an eighth link, the head end of the second link is movably connected with two rotating shafts of a push Niu Di arranged on the unlocking push button, the tail end of the second link is movably connected with the head end of the third link, the tail end of the third link is movably connected with the head ends of the fourth link and the eighth link at the same time, the tail end of the eighth link is movably connected with a third lock catch positioned in the middle, the link assembly is arranged on a lower fixing plate, a first rotating shaft of a box cover and a second rotating shaft of the box cover are respectively arranged on the lower fixing plate, the third link rotates around the first rotating shaft of the box cover, the fourth link rotates around the second rotating shaft of the box cover, a fourth lock catch is arranged on the unlocking push button, and the third lock catch and the fourth lock catch are respectively positioned on the left side and the right side of the unlocking push button.

The invention further provides a flat-top box, which comprises a box body and box covers arranged on the top surface or the two surfaces of the top and the bottom of the box body, wherein the linkage locking device is arranged on the box covers.

Further, the case lid is including being located the case top surface and the top front case lid and the top rear case lid of front and back split, linkage latch device sets up respectively on top front case lid and top rear case lid, two linkage latch device's unblock push button is located the top front case lid and top rear case lid upper surface push button recess respectively.

Further, the top surface of the unlocking push button is not higher than the top surface of the pushing force Niu Aocao.

Further, the lock catch comprises a left top lock catch and a right top lock catch, the left top lock catch and the right top lock catch are respectively arranged at the left side edge and the right side edge of the top front box cover and the top rear box cover, and a left top locking groove and a right top locking groove which are buckled with the left top lock catch and the right top lock catch are correspondingly arranged on the left side wall and the right side wall of the box body respectively.

Further, left and right sides at box top set up left top outer panel, left top inner panel, right top outer panel and right top inner panel respectively, left top outer panel and left top inner panel set up in the left top side of box and are located the lateral surface and the medial surface of box left side upper wall respectively, right top outer panel and right top inner panel set up in the right top side of box and are located the lateral surface and the medial surface of box right upper wall respectively, left top locked groove and right top locked groove set up respectively on left top outer panel and right top outer panel.

Further, the case cover further comprises a front bottom cover and a rear bottom cover which are positioned on the bottom surface of the case body and are opened in a front-back mode, the linkage locking devices are respectively arranged on the front bottom cover and the rear bottom cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in bottom push button grooves on the upper surfaces of the front bottom cover and the rear bottom cover.

Further, the top surface of the unlocking push button is not higher than the top surface of the bottom push button groove.

Further, the lock catch further comprises a left bottom lock catch and a right bottom lock catch, wherein the left bottom lock catch and the right bottom lock catch are respectively arranged at the left side edge and the right side edge of the front bottom box cover and the rear bottom box cover, and a left bottom lock groove and a right bottom lock groove which are buckled with the left bottom lock catch and the right bottom lock catch are correspondingly arranged on the left side wall and the right side wall of the box body respectively.

Further, the left side face and the right side face of the bottom of the box body are respectively provided with a left bottom outer side plate, a left bottom inner side plate, a right bottom outer side plate and a right bottom inner side plate, the left bottom outer side plate and the left bottom inner side plate are arranged on the left bottom side of the box body and are respectively located on the outer side face and the inner side face of the left lower side wall of the box body, the right bottom outer side plate and the right bottom inner side plate are arranged on the right bottom side of the box body and are respectively located on the outer side face and the inner side face of the right lower side wall of the box body, and the left bottom locking groove and the right bottom locking groove are respectively arranged on the left bottom outer side plate and the right bottom outer side plate.

Further, the case lid includes interior case lid, middle case lid and outer case lid, interior case lid is located the inboard of box, outer case lid is located the outside of box, middle case lid sets up between interior case lid and outer case lid, middle case lid rotates with the box and is connected.

The invention further provides a flat-top box, which comprises a box body and box covers arranged on the top surface or the two surfaces of the top and the bottom of the box body, wherein the linkage locking device is arranged on the box covers.

Further, the case lid is including being located the case top surface and the top front case lid and the top rear case lid of front and back split, linkage latch device sets up respectively on top front case lid and top rear case lid, two linkage latch device's unblock push button is located the top front case lid and top rear case lid upper surface push button recess respectively.

Further, the top surface of the unlocking push button is not higher than the top surface of the pushing force Niu Aocao.

Further, the middle part of the joint seam between the top front case cover and the top rear case cover is provided with a convex top folding edge and a concave top folding edge which are matched with each other in a concave-convex manner, the lock catches comprise a convex top lock catch and a concave top lock catch, the convex top lock catch and the concave top lock catch are respectively arranged on the convex top folding edge and the concave top folding edge of the top front case cover and the top rear case cover, and correspondingly, the concave top folding edge and the convex top folding edge of the top rear case cover and the top front case cover are respectively provided with a convex top locking groove and a concave top locking groove which are buckled with the convex top lock catch and the concave top lock catch.

Further, set up the safety hasp between two unblock pushing buttons of the linkage latch mechanism of case lid and top back case lid before the top, the safety hasp includes latch closure, rupture portion and spring bolt, the rupture portion sets up between latch closure and spring bolt, the latch closure sets up between two unblock pushing buttons in order to restrict the unpacking removal of two unblock pushing buttons, the spring bolt cooperates with the lockhole joint that sets up respectively in protruding top hem and the concave top hem edge of case lid behind case lid and the top the case lid sets up the hasp recess behind case lid and the top the spring bolt of safety hasp is restricted in the hasp recess behind lockhole joint cooperation.

Further, the case cover further comprises a front bottom cover and a rear bottom cover which are positioned on the bottom surface of the case body and are opened in a front-back mode, the linkage locking devices are respectively arranged on the front bottom cover and the rear bottom cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in bottom push button grooves on the upper surfaces of the front bottom cover and the rear bottom cover.

Further, the top surface of the unlocking push button is not higher than the top surface of the bottom push button groove.

Further, the middle part of the joint seam between the front bottom cover and the rear bottom cover is provided with a convex bottom folding edge and a concave bottom folding edge which are in concave-convex fit with each other, the lock catch comprises a convex bottom lock catch and a concave bottom lock catch, the convex bottom lock catch and the concave bottom lock catch are respectively arranged on the convex bottom folding edge and the concave bottom folding edge of the front bottom cover and the rear bottom cover, and a convex bottom locking groove and a concave bottom locking groove which are buckled with the convex bottom lock catch and the concave bottom lock catch are correspondingly arranged on the concave bottom folding edge and the convex bottom folding edge of the front bottom cover and the front bottom cover respectively.

Further, the case lid includes interior case lid, middle case lid and outer case lid, interior case lid is located the inboard of box, outer case lid is located the outside of box, middle case lid sets up between interior case lid and outer case lid, middle case lid rotates with the box and is connected.

Compared with the prior art, the linkage locking device comprises the unlocking push button, the linkage assembly and at least two locks, wherein the unlocking push button acts on the linkage assembly and drives each lock to move simultaneously through the linkage assembly so as to realize the opening or closing of the locks. The flat-mouth box using the device of the invention not only can be recycled and has a certain anti-theft function, but also has the box sealing capability on the box mouth and the box bottom, thereby realizing full-automatic box sealing on an automatic packaging production line and reducing labor cost.

Drawings

Fig. 1 is a schematic perspective view of an embodiment 1 and an embodiment 2 of a linkage locker of the present invention;

FIG. 2 is a schematic perspective view of the other angle of FIG. 1;

FIG. 3 is a schematic diagram showing the assembled state of the embodiment 1 and embodiment 2 of the interlocking locking device of the present invention;

FIG. 4 is a schematic perspective view of a flat top box of the present invention;

FIG. 5 is a schematic perspective view of the top cover of the flat top box of FIG. 4 in an open position;

FIG. 6 is a schematic perspective view of the flat top box of FIG. 5 with the top outer cover removed;

FIG. 7 is a schematic perspective view of the flat top box of FIG. 4 with the box body and top outer cover removed;

FIG. 8 is a schematic view of the M-M cross-section of FIG. 4;

fig. 9 is an enlarged schematic view of a portion a in fig. 8.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

Referring to fig. 1, fig. 2, fig. 3 and fig. 6, a first preferred embodiment of the interlocking latch device of the present invention includes an unlocking push button 1, an interlocking assembly and at least two latches 2. The unlocking push button 1 is connected with a linkage assembly, the linkage assembly is respectively connected with each lock catch 2, and each lock catch 2 is arranged at different positions. The unlocking push button 1 acts on the linkage assembly and drives each lock catch 2 to move simultaneously through the linkage assembly so as to realize the opening or closing of the lock catches. The linkage locking device disclosed by the invention can lock and unlock a plurality of positions at the same time.

A latch spring 3 is provided at the rear side of each latch 2. The lock catch spring 3 is arranged, so that the lock catch has automatic locking capability, and after the lock catch is closed, the lock catch can be continuously pressed to prevent the lock catch from loosening from the locking position, and the locking capability is improved.

The linkage assembly is a multi-link assembly 4. Although the invention only provides a specific mode of realizing linkage by adopting a multi-connecting rod assembly, the linkage assembly can also realize linkage by adopting gear transmission, or realize linkage by adopting gear-rack transmission, or realize linkage by adopting a soft material pulling mode, and the invention also belongs to the protection scope of the invention.

Specifically, the multi-link assembly 4 includes a first link 41, a second link 42, a third link 43, a fourth link 44, a fifth link 45, a sixth link 46, and a seventh link 47. The head end of the first link 41 is movably connected with the left lock catch 21 positioned at the left side, and the tail end of the first link is movably connected with a push Niu Di rotating shaft 11 arranged on the unlocking push button 1. The head end of the second connecting rod 42 is movably connected with the second rotating shaft 12 of the push rod Niu Di arranged on the unlocking push button 1, and the tail end of the second connecting rod is movably connected with the third connecting rod 43, the fourth connecting rod 44, the fifth connecting rod 45, the sixth connecting rod 46 and the seventh connecting rod 47 in sequence. The tail end of the seventh connecting rod 47 is movably connected with the right lock catch 22 positioned on the right side.

The link assembly 4 is mounted on a lower fixing plate 5. A first rotation shaft 51, a second rotation shaft 52, and a third rotation shaft 53 are provided on the lower fixing plate 5, respectively. The third link 43 rotates about a first axis of rotation 51, the fourth link 44 rotates about a second axis of rotation 52, and the sixth link 46 rotates about a third axis of rotation 53. An upper fixing plate 5 'is arranged on the lower fixing plate 5, and the connecting rod assembly 4 is arranged in a containing cavity formed by assembling the upper fixing plate 5' and the lower fixing plate 5.

As shown in fig. 3, the unlocking push button 1 is pushed to the right, the unlocking push button 1 directly drives the left lock catch 21 to move from the left to the middle through the first connecting rod 41, and leaves the initial locking position, and the left side of the linkage lock catch device realizes unlocking. Meanwhile, as shown by the arrow direction in the drawing, the unlocking push button 1 drives the third connecting rod 43 to rotate clockwise around the first rotating shaft 51 through the second connecting rod 42, the third connecting rod 43 drives the fourth connecting rod 44 to rotate anticlockwise around the second rotating shaft 52, the fourth connecting rod 44 drives the sixth connecting rod 46 to rotate anticlockwise through the fifth connecting rod 45, the sixth connecting rod 46 drives the right lock catch 22 to move from right to middle through the seventh connecting rod 47, and the right side of the linkage lock catch device simultaneously realizes unlocking when leaving the initial locking position.

Example 2

Referring to fig. 1, 2, 3 and 6, a second preferred embodiment of the interlocking locking device of the present invention is different from embodiment 1 only in the structural manner of the multiple link assembly.

The multi-link assembly 4' of the present embodiment includes a second link 42, a third link 43, a fourth link 44, and an eighth link 48. The head end of the second connecting rod 42 is movably connected with the second rotating shaft 12 of the push Niu Di arranged on the unlocking push button 1, and the tail end of the second connecting rod is movably connected with the head end of the third connecting rod 43. The tail end of the third connecting rod 43 is movably connected with the head ends of the fourth connecting rod 44 and the eighth connecting rod 48. The tail end of the eighth connecting rod 48 is movably connected with the third lock catch 23 positioned in the middle.

The link assembly 4' is mounted on the lower fixing plate 5. A cover first shaft 51 and a cover second shaft 52 are provided on the lower fixing plate 5, respectively. The third link 43 rotates about the cover first axis of rotation 51 and the fourth link 44 rotates about the cover second axis of rotation 52. The unlocking push button 1 is provided with a fourth lock catch 24, and the third lock catch 23 and the fourth lock catch 24 are respectively positioned at the left side and the right side of the unlocking push button 1.

As shown in fig. 3, the unlocking push button 1 is pushed to the right, the unlocking push button 1 directly drives the fourth lock catch 24 to move to the left, and the left side of the linkage lock catch device is unlocked after leaving the initial locking position. Meanwhile, as shown by the arrow direction in the drawing, the unlocking push button 1 drives the third connecting rod 43 to rotate clockwise around the first rotating shaft 51 through the second connecting rod 42, the third connecting rod 43 drives the fourth connecting rod 44 to rotate anticlockwise around the second rotating shaft 52, the third connecting rod 43 drives the eighth connecting rod 48 to move leftwards, the eighth connecting rod 48 drives the third lock catch 23 to move rightwards, and the unlocking is simultaneously realized on the right side of the linkage lock catch device when the unlocking push button leaves the initial locking position.

The multiple link assembly 4' of the present embodiment may be used alone or in combination with the multiple link assembly 4 of the previous embodiment. Since the second link 42, the third link 43, and the fourth link 44 of the present embodiment are the same as those of the previous embodiment, the structures on the unlocking push button 1 and the lower fixing plate 5 are also the same as those of the previous embodiment, so that the multiple link assemblies of the two embodiments can be combined together for use.

The present embodiment also provides a catch spring 3 at the rear side of each of said catches. The effect is also the same as in example 1.

Example 3

Referring to fig. 1 to 7, a first embodiment of the flat top box of the present invention is shown. The flat top box 6 includes a box body 61 and a box cover provided on the top surface of the box body 61, and the interlocking latch device described in embodiment 1 is provided on the box cover.

The cover includes a top front cover 62 and a top rear cover 63 which are located on the top surface of the case 61 and are divided in front and rear. The linkage locking devices are respectively arranged on the top front case cover 62 and the top rear case cover 63, and unlocking push buttons 1 of the two linkage locking devices are respectively positioned in pushing Niu Aocao on the upper surfaces of the top front case cover 62 and the top rear case cover 63.

The top surface of the unlocking push button 1 is not higher than the top surface of the pushing force Niu Aocao. The linkage locking device is completely arranged in the flat-mouth box 6, so that the appearance volume of the box is not increased, and the stacking of the flat-mouth box 6 is facilitated.

The lock catch 2 comprises a left top lock catch 25 and a right top lock catch 26, wherein the left top lock catch 25 and the right top lock catch 26 are respectively arranged on the left side edge and the right side edge of the top front box cover 62 and the top rear box cover 63, and a left top locking groove 65 and a right top locking groove 66 which are buckled with the left top lock catch 25 and the right top lock catch 26 are correspondingly arranged on the left side wall and the right side wall of the box body 61 respectively.

Left top outer side plate 67, left top inner side plate 68, right top outer side plate 69 and right top inner side plate 610 are respectively provided on the left and right sides of the top of the case 61. The left top outer side plate 67 and the left top inner side plate 68 are disposed on the left top side of the case 61 and are located on the outer side surface and the inner side surface of the left upper side wall of the case 61, respectively, and the right top outer side plate 69 and the right top inner side plate 610 are disposed on the right top side of the case 61 and are located on the outer side surface and the inner side surface of the right upper side wall of the case 61, respectively. The left top locking groove 65 and the right top locking groove 66 are provided on the left top outer side plate 67 and the right top outer side plate 69, respectively. The left top outer side plate 67, the left top inner side plate 68 and the left upper side wall of the box 61 are fixed together by bolts, and the right top outer side plate 69, the right top inner side plate 610 and the right upper side wall of the box 61 are fixed together by bolts.

The case covers include an inner case cover 611, a middle case cover 612, and an outer case cover 613, which are fastened together by bolts. The inner cover 611 is located at the inner side of the case, the outer cover 613 is located at the outer side of the case, the middle cover 612 is disposed between the inner cover 611 and the outer cover 613, and the middle cover 612 is rotatably connected with the case 61. In this embodiment, the inner case cover 611 corresponds to the lower fixing plate 5 of embodiment 1, and the outer case cover 613 corresponds to the upper fixing plate 5' of embodiment 1, as shown in fig. 5.

Example 4

Referring to fig. 4 and 7, a second embodiment of the flat top box of the present invention is shown. The flat box 6 comprises a box body 61 and a box cover arranged on the bottom surface of the box body 61. This embodiment differs from embodiment 3 in that: the case cover further includes a front bottom cover 614 and a rear bottom cover 615 which are provided on the bottom surface of the case body 61 and are divided in front and rear, and the interlocking locking devices are provided on the front bottom cover 614 and the rear bottom cover 615, respectively, instead of the front top cover 62 and the rear top cover 63.

The unlocking push buttons 1 of the two linkage lockers are respectively positioned in bottom push button grooves 616 on the upper surfaces of the front bottom case cover 614 and the rear bottom case cover 615. The top surface of the unlocking push button 1 is not higher than the top surface of the bottom push button groove 616. As in embodiment 3, the interlocking latch is disposed entirely within the flat top box 6, without increasing the bulk of the box, facilitating stacking of the flat top box 6.

The unlocking push button 1 is provided in the bottom push button groove 616 on the upper surfaces of the front bottom case cover 614 and the rear bottom case cover 615, corresponding to the unlocking push button 1 being provided in the inner bottom of the case 61 in the same opening direction as the top case cover.

The latch 2 further comprises a left bottom latch and a right bottom latch (not shown in the figures). The left bottom lock catch and the right bottom lock catch are respectively arranged on the left side edge and the right side edge of the front bottom case cover 614 and the rear bottom case cover 615, and a left bottom lock groove 617 and a right bottom lock groove 618 which are buckled with the left bottom lock catch and the right bottom lock catch are correspondingly arranged on the left side wall and the right side wall of the case body 61.

Left bottom outer side plate 619, left bottom inner side plate 620, right bottom outer side plate 621 and right bottom inner side plate 622 are respectively provided on the left and right sides of the bottom of the case. The left bottom outer side plate 619 and the left bottom inner side plate 620 are disposed at the left bottom side of the case 61 and are located at the outer side surface and the inner side surface of the left lower side wall of the case 61, respectively, and the right bottom outer side plate 621 and the right bottom inner side plate 622 are disposed at the right bottom side of the case 61 and are located at the outer side surface and the inner side surface of the right lower side wall of the case 61, respectively. The left and right bottom locking grooves 617 and 618 are provided on the left and right bottom outer side plates 619 and 621, respectively. The left bottom outer plate 619, the left bottom inner plate 920 are fixed to the left lower side wall of the case 61 by bolts, and the right bottom outer plate 621, the right bottom inner plate 622 are fixed to the right lower side wall of the case 61 by bolts.

Example 5

Referring to fig. 4 and 7, a third embodiment of the flat top box of the present invention is shown. The flat box 6 includes a box body 61 and box covers provided on both top and bottom surfaces of the box body 61, and the flat box 6 of this embodiment is provided with not only a front top cover 62 and a rear top cover 63 which are opened in front and back at the top surface of the box body 61, but also a front bottom cover 614 and a rear bottom cover 615 which are opened in front and back at the bottom surface of the box body 61. The interlock latch is provided not only on the top front case cover 62 and the top rear case cover 63, but also on the bottom front case cover 614 and the bottom rear case cover 615, and its specific arrangement structure and function are the same as those of embodiment 3 and embodiment 4. And will not be described in detail.

Example 6

Referring to fig. 1 to 9, a fourth embodiment of the flat top box of the present invention is shown. The flat box 6 of this embodiment has the same structure as that of embodiment 3, and the flat box 6 includes a box body 61 and a box cover provided on the top surface or both surfaces of the top and bottom of the box body 61, and is different in that: the interlocking latch device described in embodiment 2 is provided on the cover.

Specifically, the box cover includes a top front box cover 62 and a top rear box cover 63 that are located on the top surface of the box body 61 and are divided in front and back, and the interlocking locking devices are provided on the top front box cover 62 and the top rear box cover 63, respectively. A convex top flange 623 and a concave top flange 624, which are in concave-convex fit with each other, are provided at the middle of the joint seam of the top front cover 62 and the top rear cover 63, respectively. The latch 2 comprises a male latch 27 and a female latch 28. The male and female top locks 27, 28 are respectively provided on the male and female top flaps 623, 624 of the top front and rear covers 62, 63, respectively, and the male and female top lock grooves 625, 626, which are respectively engaged with the male and female top locks 27, 28, are respectively provided on the female and male top flaps 624, 623 of the top rear and front covers 63, 62.

The convex top lock 27 and the concave top lock 28 of the linkage lock device are arranged along the left-right direction of the box cover, so that the lock is not easy to separate from the locking position, and the capability of the box cover for bearing external force is further improved.

A safety lock 7 is arranged between the two unlocking push buttons 1 of the linkage locking device of the top front case cover 62 and the top rear case cover 63. The safety catch 7 comprises a catch cover 71, a break 72 and a locking tongue 73. The breaking part 72 is disposed between the latch cover 71 and the latch tongue 73, the latch cover 71 is disposed between the two unlocking push buttons 1 to limit the opening movement of the two unlocking push buttons 1, and the latch tongue 73 is in snap fit with the latch holes 627 disposed at the edges of the convex top flange 623 and the concave top flange 624 of the top front case cover 62 and the top rear case cover 62, respectively. A latch groove 628 is formed on the top front case cover 623 and the top rear case cover 624, and the latch cover 71 is limited in the latch groove 628 after the latch tongue 73 of the safety latch 7 is engaged with the latch hole 627. Only before the box is opened, the locking cover 71 of the safety lock 7 is lifted, so that after the breaking part 72 breaks, the locking tongue 73 is separated from the clamping fit with the locking hole 627, and the top front box cover 623 and the top rear box cover 624 are freely opened, thereby realizing the box opening. The safety catch 7 must be destroyed to perform the unlocking push button 1 action of the interlocking locker, and thus the safety catch 7 is provided so that the flat box 6 has a certain anti-theft capability.

After the box body 1 is sealed by the top front box cover 62 and the top rear box cover 63, the lock tongue 73 of the safety lock catch 7 is inserted into the lock hole 627 to be matched with the lock hole 627 in a clamping way, and the flat box 6 is sealed.

Other structures are the same as those of embodiment 3, and will not be described again.

Example 7

Referring to fig. 1 and 7, a fifth embodiment of the flat top box according to the present invention is shown. With the structure of the flat top box 6 of embodiment 3, the interlocking latch of embodiment 6 can also be combined with the interlocking latch of embodiment 3 to form the structure of the flat top box 6 of this embodiment.

The linkage locking device of the embodiment 3 and the linkage locking device of the embodiment 6 are arranged on the top front case cover 62 and the top rear case cover 63 of the flat-mouth case 6, four locks, namely the left top lock 25, the right top lock 26, the convex top lock 27 and the concave top lock 28, are respectively arranged on the top front case cover 62 and the top rear case cover 63, and eight locks are simultaneously arranged on the top case cover of the flat-mouth case 6, so that the stability of the locked top case cover is greatly improved, and the locked top case cover can bear certain inward pressure and outward tension.

On the other hand, since the latch springs 3 are provided at each latch, the top front cover 62 and the top rear cover 63 do not influence the latch to enter the corresponding latch groove no matter when the box body 61 is first, then or simultaneously covered, that is, the opening and closing of the top front cover 62 and the top rear cover 63 of the flat box 6 of the embodiment are not limited in any order, and the defect that the opening and closing of the flat box in the prior art are sequential is overcome.

Example 8

Referring to fig. 4 and 7, a sixth embodiment of the flat top box according to the present invention is shown. The flat box 6 of this embodiment is the same in structure as that of embodiment 4, except that: the interlocking latch device described in embodiment 2 is provided on the cover.

Specifically, the case cover further includes a front chassis cover 614 and a rear chassis cover 615 that are located on the bottom surface of the case body 61 and are divided in front and rear, and the interlocking locking devices are provided on the front chassis cover 614 and the rear chassis cover 615, respectively. A convex bottom flange 629 and a concave bottom flange 630 are provided in the middle of the joint seam of the front floor panel 614 and the rear floor panel 615, respectively, which are in concave-convex engagement with each other. The lock catch 2 comprises a male lock catch and a female lock catch (not shown in the figures). The raised bottom latches and the recessed bottom latches are provided on the raised bottom flaps 629 and the recessed bottom flaps 630 of the front and rear bottom covers 614 and 615, respectively, and the raised bottom latch grooves 631 and the recessed bottom latch grooves 632 which are respectively engaged with the raised bottom latches and the recessed bottom latches are provided on the recessed bottom flaps 630 and the raised bottom flaps 629 of the rear and front bottom covers 615 and 614, respectively.

Other structures are the same as those of embodiment 4, and will not be described again.

Example 9

Referring to fig. 4 and 7, a seventh embodiment of the flat top box according to the present invention is shown. With the structure of the flat box 6 of embodiment 4, the interlocking latch of embodiment 8 can also be combined with the interlocking latch of embodiment 4 to form the structure of the flat box 6 of this embodiment.

The linkage locking device of the embodiment 4 and the linkage locking device of the embodiment 8 are arranged on the front bottom cover 614 and the rear bottom cover 615 of the flat box 6, four locks, namely a left bottom lock, a right bottom lock, a convex bottom lock and a concave bottom lock, are respectively arranged on the front bottom cover 614 and the rear bottom cover 615, and eight locks are simultaneously arranged on the bottom cover of the flat box 6, so that the stability of the locked bottom cover is greatly improved, and the locked bottom cover can bear certain inward pressure and outward tension.

On the other hand, since the latch springs 3 are provided at each latch, the front bottom cover 614 and the rear bottom cover 615 cover the case 61 at first, later or simultaneously, and the latches do not enter the corresponding latch grooves, that is, the opening and closing of the front bottom cover 614 and the rear bottom cover 615 of the flat box 6 of the present embodiment are not limited in any order, and the defect of the order of opening and closing the flat box in the prior art is overcome.

Example 10

Referring to fig. 4 and 7, an eighth embodiment of the flat top box according to the present invention is shown. The flat box structure of example 7 was integrated with the flat box structure of example 9 to obtain the new flat box structure of this example. The flat box 6 of this embodiment not only sets up eight hasp on the top case lid, sets up eight hasp on the bottom case lid in addition, has greatly improved the stability after top case lid and the locking of bottom case lid for the top case lid after locking and bottom case lid can bear certain inwards pressure and outwards pulling force simultaneously.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (24)

1. The utility model provides a linkage locking device, its characterized in that includes unblock push button, linkage subassembly and two at least catches, the unblock push button is connected with the linkage subassembly, the linkage subassembly is connected with every hasp respectively, every the hasp sets up in different positions, the unblock push button acts on the linkage subassembly and drives every hasp respectively through the linkage subassembly and remove simultaneously in order to realize opening or closure of hasp.

2. The ganged-locker of claim 1, wherein a locker spring is provided at a rear side of each locker.

3. The ganged-locker of claim 1, wherein the ganged-assembly is a multi-link assembly.

4. The interlocking latch device according to claim 3, wherein the multi-link assembly comprises a first link, a second link, a third link, a fourth link, a fifth link, a sixth link and a seventh link, the head end of the first link is movably connected with a left latch located at the left side, the tail end of the first link is movably connected with a push Niu Di rotating shaft provided on the unlocking push button, the head end of the second link is movably connected with a push Niu Di rotating shaft provided on the unlocking push button, the tail end of the second link is movably connected with the third link, the fourth link, the fifth link, the sixth link and the seventh link in sequence, the tail end of the seventh link is movably connected with a right latch located at the right side, the link assembly is mounted on a lower fixing plate, the lower fixing plate is provided with a first rotating shaft, a second rotating shaft and a third rotating shaft, the third link rotates around the first rotating shaft, the fourth link rotates around the second rotating shaft, and the sixth link rotates around the third rotating shaft.

5. The linkage locking device according to claim 3 or 4, wherein the multi-link assembly comprises a second link, a third link, a fourth link and an eighth link, the head end of the second link is movably connected with two rotating shafts of a push Niu Di arranged on the unlocking push button, the tail end of the second link is movably connected with the head end of the third link, the tail end of the third link is simultaneously movably connected with the head ends of the fourth link and the eighth link, the tail end of the eighth link is movably connected with a third lock catch positioned in the middle, the link assembly is arranged on a lower fixing plate, a first rotating shaft of a box cover and a second rotating shaft of a box cover are respectively arranged on the lower fixing plate, the third link rotates around the first rotating shaft of the box cover, the fourth link rotates around the second rotating shaft of the box cover, a fourth lock catch is arranged on the unlocking push button, and the third lock catch and the fourth lock catch are respectively positioned on the left side and the right side of the unlocking push button.

6. A flat top box comprising a box body and a box cover arranged on the top surface or the two surfaces of the top and the bottom of the box body, wherein the linkage locking device as claimed in claim 4 is arranged on the box cover.

7. The flat top box as claimed in claim 6, wherein the box cover comprises a top front box cover and a top rear box cover which are positioned on the top surface of the box body and are opened in a front-back mode, the linkage locking devices are respectively arranged on the top front box cover and the top rear box cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in push button grooves on the upper surfaces of the top front box cover and the top rear box cover.

8. The flat top box of claim 7, wherein a top surface of the unlocking knob is no higher than a top surface of the push Niu Aocao.

9. The flat top box of claim 7, wherein the latch comprises a left top latch and a right top latch, the left top latch and the right top latch are respectively disposed on left and right sides of the top front cover and the top rear cover, and a left top latch groove and a right top latch groove which are respectively buckled with the left top latch and the right top latch are correspondingly disposed on left and right side walls of the box body.

10. The flat top box according to claim 9, wherein left and right side surfaces of the top of the box body are respectively provided with a left top outer side plate, a left top inner side plate, a right top outer side plate and a right top inner side plate, the left top outer side plate and the left top inner side plate are respectively arranged on the left top side of the box body and are respectively positioned on the outer side surface and the inner side surface of the left upper side wall of the box body, the right top outer side plate and the right top inner side plate are respectively arranged on the right top side of the box body and are respectively positioned on the outer side surface and the inner side surface of the right upper side wall of the box body, and the left top locking groove and the right top locking groove are respectively arranged on the left top outer side plate and the right top outer side plate.

11. The flat top box according to any one of claims 6 to 9, wherein the box cover further comprises a front bottom cover and a rear bottom cover which are positioned on the bottom surface of the box body and are respectively arranged on the front bottom cover and the rear bottom cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in bottom push button grooves on the upper surfaces of the front bottom cover and the rear bottom cover.

12. The flat top box of claim 11, wherein the top surface of the unlocking push button is not higher than the top surface of the bottom push button groove.

13. The flat top box as claimed in claim 11, wherein the latch further comprises a left bottom latch and a right bottom latch, which are disposed at left and right sides of the front and rear bottom covers, respectively, and left and right bottom latch grooves, which are engaged with the left and right bottom latches, are disposed at left and right sidewalls of the box body, respectively.

14. The flat top box according to claim 13, wherein a left bottom outer side plate, a left bottom inner side plate, a right bottom outer side plate and a right bottom inner side plate are respectively arranged on the left side and the right side of the bottom of the box body, the left bottom outer side plate and the left bottom inner side plate are respectively arranged on the left side and the inner side of the left lower side wall of the box body, the right bottom outer side plate and the right bottom inner side plate are respectively arranged on the right side and the outer side and the inner side of the right lower side wall of the box body, and the left bottom locking groove and the right bottom locking groove are respectively arranged on the left bottom outer side plate and the right bottom outer side plate.

15. The flat top box of claim 6, wherein the box cover comprises an inner box cover, a middle box cover and an outer box cover, wherein the inner box cover is positioned on the inner side of the box body, the outer box cover is positioned on the outer side of the box body, the middle box cover is arranged between the inner box cover and the outer box cover, and the middle box cover is connected with the box body in a rotating mode.

16. A flat top box comprising a box body and a box cover arranged on the top surface or the two surfaces of the top and the bottom of the box body, wherein the linkage locking device as claimed in claim 5 is arranged on the box cover.

17. The flat top box according to claim 16, wherein the box cover comprises a top front box cover and a top rear box cover which are positioned on the top surface of the box body and are divided in a front-back mode, the linkage locking devices are respectively arranged on the top front box cover and the top rear box cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in push button grooves on the upper surfaces of the top front box cover and the top rear box cover.

18. The flat top box of claim 17, wherein a top surface of the unlocking knob is no higher than a top surface of the push Niu Aocao.

19. The flat top box as claimed in claim 17, wherein a convex top flange and a concave top flange are respectively provided at the middle of the joint seam of the top front cover and the top rear cover, the latch includes a convex top latch and a concave top latch, the convex top latch and the concave top latch are respectively provided on the convex top flange and the concave top flange of the top front cover and the top rear cover, and a convex top locking groove and a concave top locking groove are respectively provided on the concave top flange and the convex top flange of the top rear cover and the top front cover, which are respectively engaged with the convex top latch and the concave top latch.

20. The flat top box as claimed in claim 19, wherein a safety latch is provided between two unlocking push buttons of the interlocking latch devices of the top front and rear box covers, the safety latch including a latch cover, a breaking portion and a latch tongue, the breaking portion being provided between the latch cover and the latch tongue, the latch cover being provided between the two unlocking push buttons to restrict opening movement of the two unlocking push buttons, the latch tongue being engaged with latch holes provided at edges of convex and concave top flaps of the top front and rear box covers, respectively, latch grooves being provided on the top front and rear box covers, the latch cover being restricted in the latch grooves after the latch tongue and the latch hole of the safety latch being engaged.

21. The flat top box according to any one of claims 16 to 20, wherein the box cover further comprises a front bottom cover and a rear bottom cover which are positioned on the bottom surface of the box body and are respectively arranged on the front bottom cover and the rear bottom cover, and unlocking push buttons of the two linkage locking devices are respectively positioned in bottom push button grooves on the upper surfaces of the front bottom cover and the rear bottom cover.

22. The flat top box of claim 21, wherein the top surface of the unlocking push button is not higher than the top surface of the bottom push button groove.

23. The flat top box as claimed in claim 21, wherein a convex bottom flange and a concave bottom flange are respectively provided at the middle of the joint seam between the front and rear bottom covers, the latches include a convex bottom latch and a concave bottom latch, the convex bottom latch and the concave bottom latch are respectively provided on the convex bottom flange and the concave bottom flange of the front and rear bottom covers, and a convex bottom latch groove and a concave bottom latch groove are respectively provided on the concave bottom flange and the convex bottom flange of the front and rear bottom covers, which are respectively engaged with the convex bottom latch and the concave bottom latch.

24. The flat top box of claim 16, wherein the box cover comprises an inner box cover, a middle box cover and an outer box cover, wherein the inner box cover is positioned on the inner side of the box body, the outer box cover is positioned on the outer side of the box body, the middle box cover is arranged between the inner box cover and the outer box cover, and the middle box cover is rotatably connected with the box body.

Images