CN219361649U - Box-type box with embedded lock catch - Google Patents

Abstract

The utility model discloses a box type box with an embedded lock catch, which comprises a box body, a box cover positioned at the top of the box body, an upper baffle and an upper flitch, wherein the box body and the box cover are buckled with each other, the rear side of the box cover is connected with each other in a rotating way; the inner periphery and the lower baffle are attached to the front wall of the box body, the upper parts of the lower baffle and the box body are respectively provided with a superposed groove, the inner periphery is arranged in the box body, and a lower mounting groove is formed between the inner periphery and the two grooves; the lock catch comprises a movable part and a fixed part, wherein the movable part is fixed in the upper mounting groove, the fixed part is fixed in the lower mounting groove, the movable part rotates downwards to be buckled with the fixed part, and after the buckling, the lower part of the lock catch is completely positioned in the lower mounting groove. The utility model has the advantages of preventing the lock catch from being directly damaged, preventing the lock catch from being opened by false touch, avoiding the lock catch from being fixed by using screws, and the like.

Description

Box-type box with embedded lock catch

Technical Field

The utility model belongs to the technical field of box type box structural design in the packaging industry, and particularly relates to a box type box with an embedded lock catch.

Background

After years of development in the packaging industry, the box-type case has been widely used in the packaging industry, has a better appearance than other gift boxes, has a better opening experience, and can improve the grade of packaged contents. Among the prior art, many pass through the hasp between box-type box lid and the box body and fix, the hasp is installed in box-type box body (hereinafter referred to as the box body) outside and outwards protrusion 3-5mm to generally be through screw connection with hasp and box body fixed connection, the box-type box that current hasp is connected has following defect:

1. because the hasp is installed in the box body outside and outwards protrusion, when the box body suffered friction and scrape the bump, the hasp received the direct injury more easily, led to the hasp surface impaired, seriously influenced the aesthetic property to if suffered serious scrape also probably scrape the hasp and fall, even use screw connection also can't guarantee its steadiness.

2. The lock catch is arranged at the outer side of the box body, and the lock catch is easy to be opened by false touch.

3. When transporting or carrying the box-type box, can produce to rock, and because the hasp passes through screwed connection, rocks the back for a long time, the screw is easy not hard up to lead to the hasp connection insecure even drop, in addition the screw is still polluted the box body surface by corrosion easily, influences the aesthetic property.

4. The screw connection is generally completed manually, and the screw installation position of each box type box is determined by manual hand feeling, so that the condition that the lock catch and the box body are not well matched easily occurs, and the uniformity of product styles is also not facilitated.

5. The lock catch is arranged on the outer side of the box body and protrudes outwards, so that the box is not beneficial to boxing, the box is easy to clamp when in boxing, and compared with a box type box without the protruding lock catch, the box type box with the protruding lock catch can be packaged only by a packing box with a larger size, so that the packaging cost is increased, and resources are wasted.

Disclosure of Invention

In order to solve the problems in the background art, the utility model provides the box type box with the embedded lock catch, which can avoid the damage to the lock catch when the box body is rubbed or scraped, does not need to use screw connection, is not easy to be blocked when in case, reduces the packaging cost, can avoid the problem of poor matching and is not easy to be opened by false touch.

The utility model is realized by the following technical scheme:

the box-type box with the embedded lock catch comprises a box body, a box cover positioned at the top of the box body, an upper baffle and an upper flitch, wherein the box body and the box cover are buckled with each other, the rear side of the box cover is connected with the upper baffle in a rotating mode, the upper baffle is attached to the inner side of the front wall of the box cover, the upper flitch is attached to the inner side of the upper baffle, a groove is formed in the lower portion of the upper baffle, and the groove is positioned between the front wall of the box cover and the upper flitch to form an upper mounting groove; the inner periphery and the lower baffle are attached to the front wall of the box body, the upper parts of the lower baffle and the box body are respectively provided with a superposed groove, and the inner periphery is arranged in the box body and forms a lower mounting groove with the two grooves; the lock catch comprises a movable part and a fixed part, wherein the movable part is fixed in an upper mounting groove, the fixed part is fixed in a lower mounting groove, the movable part rotates downwards to be buckled with the fixed part, and after the movable part is buckled, the lower part of the lock catch is completely positioned in the lower mounting groove.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The box cover and the box body of the box type box are respectively provided with an upper mounting groove and a lower mounting groove, the lock catch is arranged in the two mounting grooves, so that the lock catch can be inlaid in the box body to form a hidden lock catch, after the lock catch is buckled, the lock catch is completely positioned in the mounting grooves and cannot protrude outwards, the situation that the surface of the box body is damaged directly when the box body is subjected to friction and scraping is avoided, the appearance is affected by the damage of the lock catch, and even if the box body is subjected to more serious scraping, the influence on the lock catch cannot be caused due to the fact that the box body is not in direct contact with the lock catch. And the lock catch is embedded into the box body, so that the problem that the lock catch is easy to be opened by false touch can be avoided.

(2) The upper mounting groove is positioned between the front wall of the box cover and the upper flitch, and the fixed part of the movable part arranged in the upper mounting groove is completely prevented from being directly exposed outside, so that the fixed part can be prevented from being directly damaged, the integrity of the box cover is ensured, and the integral aesthetic property is improved.

(3) The lock catch is inlaid in the box body, and the lock catch cannot protrude outwards after being buckled, so that the volume of the box-type box packaging box is not increased, the packaging cost is reduced, and the resources are saved.

(4) Through seting up the recess on lower baffle, increased the thickness of lower mounting groove, also can avoid in order to fix the mounting under in the mounting groove to increase the thickness of box body front wall, increased the production degree of difficulty and also influenced holistic aesthetic property.

Preferably, the movable piece comprises a mounting block and a rotating frame, the mounting block is fixed in the upper mounting groove, the lower part of the mounting block is hinged with the rotating frame, and the rotating frame can rotate up and down around the mounting block; the U-shaped frame is characterized in that the U-shaped frame is integrally connected to the front side surface of the fixing piece, a clamping groove is formed in the U-shaped frame, a clamping block is arranged on the clamping groove, the rotating frame rotates downwards to be attached to the clamping groove and is connected with the clamping block in a circumferential fit mode, two side frames of the rotating frame are clamped in clamping slots formed in two sides of the clamping block and the U-shaped frame, a gap is reserved between the underframe and the lower bottom surface of the clamping groove, and the inner side of the underframe is in smooth transition.

When the rotating frame rotates downwards around the mounting block to be attached to the clamping groove, the movable piece is buckled with the fixed piece, and the box cover is fixedly connected with the box body; the two side frames of the rotating frame are clamped in the clamping gaps, so that the connection stability of the movable piece and the fixed piece is enhanced; the rotary frame is required to be scratched out when the lock catch is opened, so that the problem that the lock catch is opened by false touch in the background art is completely avoided; the smooth transition of the inner side of the underframe of the rotating frame can also avoid damage when the rotating frame is scratched.

Further preferably, the bottom surface of the mounting block is provided with a fixing block matched with the fixing groove on the upper surface of the clamping block, and the fixing block stretches into the fixing groove. Through setting up the fixed slot and rather than matched with fixed block for after the fixed block stretches into the fixed slot, rotate frame and fixture block can stable lock, have also strengthened the connection stability of box body and lid.

Further preferably, the groove widths of the lower baffle plate and the front wall of the box body are different, wherein the groove width of the part positioned at the outer side of the two parts is smaller than the groove width of the part positioned at the inner side of the two parts, and two sides of the lower mounting groove form clamping channels into which two ends of the fixing piece can be clamped. The left side and the right side of the fixing piece are clamped in the two clamping channels, so that the fixing piece can be connected more firmly.

Further preferably, the lower sides of the two side walls of the groove of the upper baffle are recessed inwards, and the fixed part of the movable piece is connected with the fixed part in a matching way; the upper sides of the two side walls of the groove of the inner part of the two parts of the lower baffle plate and the front wall of the box body are also recessed inwards, and the fixing piece is connected with the fixing piece in a matching way. The fixing parts of the fixing piece and the movable piece are respectively clamped in the two grooves, so that the movable piece and the fixing piece are prevented from sliding off, and the stability of the movable piece and the movable piece is enhanced.

Preferably, the movable part and the fixed part are respectively fixed with the upper mounting groove and the lower mounting groove through glue. By using glue to replace screws, the production cost is reduced, and the problem caused by screw connection in the background technology can be avoided.

Preferably, the grooves formed in the front wall of the box body, the upper baffle plate and the lower baffle plate are formed by die cutting. The grooves are processed through die cutting, so that the set positions of the grooves are unified, the mounting positions of the lock catches can also be unified, and the problem that the lock catches and the box body are not well matched in the background art is avoided.

Preferably, the height of the inner periphery is greater than the height of the box body. The box cover and the box body are convenient to be buckled, and the box cover and the box body can be fixed, so that the left and right staggering of the box cover and the box body is avoided.

Preferably, the inner side and the outer side of the rear wall of the box body and the box cover are respectively provided with connecting paper for fixedly connecting the box body and the box cover, and the box body and the box cover can rotate around the joint of the rear walls of the box body and the box cover. The box body and the box cover are connected and fixed through the connecting paper, and the box body and the box cover can also rotate around the joint of the rear walls of the box body and the box cover to open or close the box type box.

Drawings

The utility model will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a box cover according to the present utility model;

FIG. 2 is a schematic perspective view of the upper baffle plate of the present utility model;

FIG. 3 is a front view of the upper plate of the present utility model;

FIG. 4 is a schematic perspective view of the mounting groove of the present utility model;

FIG. 5 is a schematic perspective view of the case of the present utility model;

FIG. 6 is a schematic perspective view of a lower baffle plate according to the present utility model;

FIG. 7 is a schematic perspective view of the inner periphery of the present utility model;

FIG. 8 is a schematic perspective view of a lower mounting groove of the present utility model;

FIG. 9 is a schematic perspective view of the connection of the movable member and the lid of the present utility model;

FIG. 10 is a schematic perspective view of the attachment of the fastener to the case of the present utility model;

FIG. 11 is a schematic perspective view of the whole structure of the box cover and the box body after being buckled;

FIG. 12 is a front view of a moveable member of the present utility model;

FIG. 13 is a side view of a moveable member of the present utility model;

FIG. 14 is a front view of a fastener of the present utility model;

fig. 15 is a schematic structural view of the connection between the movable member and the fixed member according to the present utility model.

The marks in the figure: lid 1, upper plate 11, upper baffle 12, upper mounting groove 13, lid front wall 14, case body 2, inner periphery 21, lower baffle 22, case body front wall 23, lower mounting groove 24, clip channel 25, groove 3, movable member 4, mounting block 41, rotation hole 411, fixed block 412, rotation frame 42, rotation shaft 421, side frame 422, bottom frame 423, fixed member 5, "U" -shaped frame 50, clip groove 51, clip block 52, fixed groove 521, clip slit 53, and connecting paper 6.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. 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 utility model. In addition, the upper panel 11 is not shown in fig. 4 and 9 for the upper mounting groove 13, and the inner periphery 21 is not shown in fig. 10 for the lower mounting groove 24. For convenience of illustration, fig. 4 and 9 are schematic structural views of the box cover 1 after being turned 180 ° and fig. 10 is a schematic perspective view of the box body 2 after being turned 90 °.

Example 1: the box-type case with embedded lock catch (hereinafter referred to as box-type case) shown in fig. 1 to 11 comprises a case body 2 and a case cover 1 buckled with the top of the case body 2, wherein the case cover 1 is rotationally connected with the rear sides of the case body 2 and can rotate around the joint of the rear sides of the case body and the case cover to open or close the box-type case. The front sides of the box cover 1 and the box body 2 are fixedly connected through a lock catch, so that the box type box further comprises an upper attaching plate 11, an upper baffle plate 12, an inner periphery 21, a lower baffle plate 22 and the lock catch.

As shown in fig. 1 to 4, the upper baffle 12 is adhered to the inner side of the front wall 14 of the box cover (i.e. the front baffle of the box cover 1) by glue, the upper baffle 11 is adhered to the inner side of the upper baffle 12 by glue, the upper baffle 12 is adhered to the upper baffle by glue, the upper baffle 12 is provided with a groove 3, the opening of the groove 3 is downward, and the groove 3 is located between the front wall 14 of the box cover and the upper baffle 11 to form an upper mounting groove 13.

As shown in fig. 5 to 8, the lower baffle 22 is adhered to the front wall 23 of the box body (i.e. the front side baffle of the box body 2) through glue, the two are adhered in parallel, the lower baffle 22 can be adhered to the inner side of the front wall 23 of the box body, the inner periphery 21 is a rectangular frame structure, the outer periphery of the lower baffle 22 is adhered and fixed in the box body 2 through glue, the periphery is matched with the inner side of the box body 2, the top of the lower baffle 22 and the top of the front wall 23 of the box body are respectively provided with a superposed groove 3, the openings of the two grooves 3 are upward, and the front wall of the inner periphery 21 and the two grooves 3 form a lower mounting groove 24. The groove 3 formed on the lower baffle 22 can increase the thickness of the lower mounting groove 24, so that the lock catch can be completely embedded into the lower mounting groove 24.

The lock catch comprises a movable piece 4 and a fixed piece 5, as shown in fig. 9, the movable piece 4 is fixed in an upper mounting groove 13, and the upper mounting groove 13 is positioned between the front wall 14 of the box cover and the upper pasting plate 11, so that the part of the movable piece 4 fixed in the upper mounting groove 13 is sealed in the groove and can not be directly exposed outside, thereby not only avoiding direct damage, but also ensuring the integrity of the appearance of the box cover 1.

As shown in fig. 10, the fixing member 5 is fixed in the lower mounting groove 24, the movable member 4 rotates downward to be buckled with the fixing member 5, after buckling, as shown in fig. 11, the lower part of the buckle is completely located in the lower mounting groove 24, that is, after the movable member 4 is buckled with the fixing member 5, the buckle part located in the lower mounting groove 24 is completely located in the lower mounting groove 24, and cannot exceed the notch, and cannot protrude outwards, so that when the box is rubbed and scraped, the buckle cannot be contacted, the buckle can be prevented from being directly damaged, the aesthetic property is affected, even the buckle is caused to directly fall off, and the problem that the mistaken touching of the buckle is opened can be avoided. In addition, after the lock catches are buckled, the lock catches can not outwards bulge, so that the volume of the packing box of the box type box is not increased, the packing cost is reduced, and the resources are saved.

Example 2: as shown in fig. 1 to 15, the shackle is preferably designed on the basis of embodiment 1. The movable part 4 is fixedly connected with the upper mounting groove 13 through glue, the movable part 4 comprises a mounting block 41 and a rotating frame 42, the mounting block 41 is of a sheet structure, the rotating frame 42 comprises a rotating shaft 421 and a bottom frame 423 which are positioned on the upper side and the lower side, and left and right side frames 422 which are connected with the rotating shaft 421 and the bottom frame 423, the mounting block 41 is fixed in the upper mounting groove 13, and the front surface and the rear surface of the mounting block 41 are respectively fixedly connected with the front wall 14 of the box cover and the upper pasting plate 11 through glue. The lower part of the mounting block 41 is provided with a rotating hole 411, a rotating shaft 421 at the top of the rotating frame 42 passes through the rotating hole 411 to be hinged with the rotating hole, and the rotating frame 42 rotates up and down by taking the rotating shaft 421 as the center, wherein the rotating shaft 421 is tightly matched with the rotating hole 411, so that the rotating frame 42 can keep self stability and can rotate up and down under the action of external force.

The fixing piece 5 is fixedly connected with the lower mounting groove 24 through glue, namely, the back of the fixing piece 5 is stuck on the inner periphery 21 through glue, the front side surface of the fixing piece 5 is integrally connected with a U-shaped frame 50, the U-shaped frame 50 protrudes forwards and is provided with an upward opening, a clamping groove 51 is arranged in the U-shaped frame 50, a clamping block 52 is integrally connected in the middle of the upper part of the clamping groove 51, a gap between the clamping block 52 and two side walls of the U-shaped frame 50 is a clamping slot 53, when the lower part of the rotating frame 42 is downwards turned to be attached to the clamping groove 51, the inner side of the rotating frame 42 is connected with the clamping block 52 in a circumferential matching manner, two side frames 422 of the rotating frame 42 are clamped in the clamping slot 53, a gap is reserved between the bottom frame 423 and the bottom surface of the clamping groove 51, the inner side of the bottom frame 423 is smoothly transited, the rotating frame 42 is opened from the gap, the problem that the lock catch is easily opened by error touch in the background technology is completely avoided, and the inner side of the bottom frame 423 is smoothly transited, and injuries are avoided when the rotating frame 42 is scratched.

Further, the lower bottom surface of the mounting block 41 is provided with a fixing block 412, the upper surface of the clamping block 52 is provided with a fixing groove 521, and when the box body 2 is buckled with the box cover 1, the fixing block 412 stretches into the fixing groove 521 to be connected with the fixing groove in a matched manner, so that the rotating frame 42 and the clamping block 52 can be buckled stably, and the connection stability of the box body 2 and the box cover 1 is enhanced.

Example 3: on the basis of embodiment 2, the lower mounting groove 24 is preferably designed, the lower baffle 22 is fixed on the outer side or the inner side of the front wall 23 of the box body, if the lower baffle 22 is fixed on the outer side of the front wall 23 of the box body, the width of the groove 3 of the lower baffle 22 is smaller than the width of the groove 3 of the front wall 23 of the box body, otherwise if the lower baffle 22 is fixed on the inner side of the front wall 23 of the box body, the width of the groove 3 of the lower baffle is larger than the width of the groove 3 of the front wall 23 of the box body, as shown in fig. 8, the left and right sides of the lower baffle 22 are fixed on the inner side of the front wall 23 of the box body, the clamping channels 25 are formed on the left and right sides of the lower mounting groove 24, and when the fixing piece 5 is mounted, the two outer sides of the U-shaped frame 50 are clamped in the two clamping channels 25, and the connection of the fixing piece 5 can be more firmly realized through the design.

Example 4: on the basis of embodiment 1, as shown in fig. 2, the lower parts of the two side walls of the groove 3 of the upper baffle 12 are recessed inwards, the fixed part (the part fixed in the upper mounting groove 13) of the movable part 4 is connected with the fixed part in a circumferential direction in a matching way, and is clamped in the groove 3, so that the movable part 4 can be prevented from sliding off, and the connection stability of the movable part 4 is enhanced. In this embodiment, as shown in fig. 6, the lower baffle 22 is located inside the front wall 23 of the box body, and the two side walls of the groove 3 of the lower baffle 22 are recessed inwards, so that the fixing piece 5 is connected with the fixing piece in a matching manner in the circumferential direction, and is clamped in the groove 3, so that the fixing piece 5 is prevented from sliding and falling off, and the connection stability of the fixing piece 5 is enhanced.

Example 5: on the basis of embodiment 1, the movable part 4 and the fixed part 5 are fixedly connected with the upper mounting groove 13 and the lower mounting groove 24 respectively through glue, so that the problems that screws are easy to loosen and the box body is polluted by rust caused by screw connection in the prior art are solved. The grooves 3 formed in the upper baffle 12, the box body front wall 23 and the lower baffle 22 are formed by die cutting, the grooves 3 are formed by die cutting, the formed positions of the grooves 3 are unified, the mounting positions of the lock catches are unified, and the problem that the lock catches and the box body are not matched well due to the fact that the screws are manually mounted in the background art is solved. In addition, the height of the inner periphery 21 is higher than that of the box body 2, so that the box cover 1 and the box body 2 can be conveniently buckled, the box cover 1 and the box body 2 can be fixed, the left and right staggering of the box cover 1 and the box body 2 is avoided, and the inside of the box body 2 is more attractive.

Example 6: on the basis of embodiment 1, the connection mode of the rear sides of the box cover 1 and the box body 2 is preferably designed, as shown in fig. 11, the inner side and the outer side of the rear wall (i.e. the rear side baffle) of the box body 2 and the box cover 1 are respectively stuck with connection paper 6 through glue, the box body 2 and the box cover 1 are fixedly connected through the connection paper 6, and after the connection paper is fixed, the box body 2 and the box cover 1 can rotate around the joint of the rear wall to open or close the box type box.

The foregoing examples merely represent specific embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, which fall within the protection scope of the present application.

Claims (9)

1. The utility model provides a box-type box of embedded hasp, includes box body (2) and lid (1) that are located box body (2) top, and both looks lock and rear side rotate and connect, its characterized in that:

the box cover is characterized by further comprising an upper baffle plate (12) and an upper flitch (11), wherein the upper baffle plate (12) is attached to the inner side of the front wall (14) of the box cover, the upper flitch (11) is attached to the inner side of the upper baffle plate (12), a groove (3) is formed in the lower portion of the upper baffle plate (12), and the groove (3) is located between the front wall (14) of the box cover and the upper flitch (11) to form an upper mounting groove (13);

the inner periphery (21) and the lower baffle (22) are attached to the front wall (23) of the box body, the upper parts of the lower baffle (22) and the box body are respectively provided with a superposed groove (3), the inner periphery (21) is arranged in the box body (2), and a lower mounting groove (24) is formed between the inner periphery and the two grooves (3);

the lock catch comprises a movable piece (4) and a fixed piece (5), wherein the movable piece (4) is fixed in an upper mounting groove (13), the fixed piece (5) is fixed in a lower mounting groove (24), the movable piece (4) rotates downwards to be buckled with the fixed piece (5), and after the lock catch is buckled, the lower part of the lock catch is completely positioned in the lower mounting groove (24).

2. The in-line latch box of claim 1, wherein:

the movable piece (4) comprises a mounting block (41) and a rotating frame (42), wherein the mounting block (41) is fixed in the upper mounting groove (13), the lower part of the mounting block is hinged with the rotating frame (42), and the rotating frame (42) can rotate up and down around the mounting block (41);

the U-shaped frame is characterized in that the U-shaped frame (50) is integrally connected to the front side surface of the fixing piece (5), a clamping groove (51) is formed in the U-shaped frame (50), a clamping block (52) is arranged on the clamping groove (51), the rotating frame (42) rotates downwards to be attached to the clamping groove (51) and is connected with the clamping block (52) in a circumferential fit mode, two side frames (422) of the rotating frame are clamped in clamping slots (53) formed in the two sides of the clamping block (52) and the U-shaped frame (50), a gap is reserved between the bottom frame (423) of the U-shaped frame and the lower bottom surface of the clamping groove (51), and the inner side of the bottom frame (423) is in smooth transition.

3. The in-line latch box of claim 2, wherein: the bottom surface of the mounting block (41) is provided with a fixing block (412) matched with a fixing groove (521) on the upper surface of the clamping block (52), and the fixing block (412) stretches into the fixing groove (521).

4. The in-line latch box of claim 1 or claim 2, wherein: the width of the groove (3) of the lower baffle plate (22) and the width of the groove (3) of the box body front wall (23) are different, wherein the width of the groove (3) of the part positioned on the outer side of the two parts is smaller than the width of the groove (3) of the part positioned on the inner side of the two parts, and two sides of the lower mounting groove (24) form clamping channels (25) which can be clamped into two ends of the fixing piece (5).

5. The in-line latch box of claim 1 or claim 2, wherein: the lower sides of the two side walls of the groove (3) of the upper baffle plate (12) are recessed inwards, and the fixed part of the movable piece (4) is connected with the fixed part in a matching way; the upper sides of the two side walls of the groove (3) of the inner part of the two parts of the lower baffle plate (22) and the front wall (23) of the box body are also recessed inwards, and the fixing piece (5) is connected with the fixing piece in a matching way.

6. The in-line latch box of claim 1, wherein: the movable piece (4) and the fixed piece (5) are fixedly connected with the upper mounting groove (13) and the lower mounting groove (24) respectively through glue.

7. The in-line latch box of claim 1, wherein: the box body is characterized in that grooves (3) formed in the front wall (23), the upper baffle (12) and the lower baffle (22) of the box body are formed by die cutting.

8. The in-line latch box of claim 1, wherein: the height of the inner periphery (21) is larger than that of the box body (2).

9. The in-line latch box of claim 1, wherein: the inner side and the outer side of the rear wall of the box body (2) and the box cover (1) are respectively provided with connecting paper (6) for fixedly connecting the box body (2) and the box cover (1), and the box body (2) and the box cover (1) can rotate around the joint of the rear walls of the box body and the box cover.