CN206386854U - Emergency light - Google Patents

Abstract

The utility model is related to emergency light, including：Lamp box, lamp holder and turning arm, lamp box have mounting surface, and mounting surface offers mounting hole；Lamp holder includes upper lid, lower cover, lamp body and lampshade, upper lid and lower cover are fastened and connected and are internally formed lamp chamber, lamp body is arranged in lamp chamber, upper one side of the lid away from lower cover is provided with light-transmitting opening, lampshade connects with top cap and covers at light-transmitting opening, dorsad the upper one side covered is arcwall face to lower cover, and arcwall face offers a sliding groove；Turning arm includes the engaging portion and sliding part of integrally connected, and engaging portion is inserted in mounting hole, and is fastened and connected with lamp box, and sliding part is slideably positioned in sliding groove.Lamp holder is arranged on lamp box by turning arm, the sliding groove of lamp holder can produce the motion of relative sliding shoe, track of the lamp holder along the sliding groove on arcwall face is overturn, lamp holder can also be rotated by engaging portion around the center of circle of mounting hole, it can also be rotated so that lamp holder can be overturn so that the range of exposures of lamp holder is bigger.

Description

Emergency light

Technical field

The utility model is related to lighting technical field, more particularly to emergency light.

Background technology

Fire emergency lamp is a kind of universal illuminations in fire-fighting emergent, for fire emergency.Fire emergency lamp With power consumption is small, high brightness and the features such as long service life, be widely used in factory, hotel, school and unit etc. public Place is used in case having a power failure as emergency lighting.

The lamp holder of traditional emergency light can not be adjusted, and cause direction of illumination scope to fix so that illumination is more inconvenient.

Utility model content

Based on this, it is necessary to can not be adjusted for the lamp holder of traditional emergency light, cause direction of illumination scope to fix so that There is provided a kind of emergency light for the defect of illumination more inconvenience.

A kind of emergency light, including：

Lamp box, the lamp box has mounting surface, and the mounting surface offers mounting hole, and the mounting hole has circular cut Face；

Lamp holder, the lamp holder include upper lid, lower cover, lamp body and lampshade, it is described it is upper lid with the lower cover be fastened and connected with Lamp chamber is internally formed, the lamp body is arranged in the lamp chamber, the upper one side of the lid away from the lower cover is provided with light-transmitting opening, The lampshade and the top cap connect and cover at the light-transmitting opening, and the one side of the lower cover dorsad upper lid is arcwall face, The arcwall face offers a sliding groove；

Turning arm, the turning arm includes the engaging portion and sliding part of integrally connected, and the engaging portion is inserted in the peace Fill in hole, and be fastened and connected with the lamp box, the sliding part is slideably positioned in the sliding groove.

In one embodiment, the engaging portion includes at least two snapping bars being disposed adjacent, and each snapping bar is equal It is connected with the sliding part.

In one embodiment, the back side of the mounting surface is provided with abutting part along the mounting hole, and the engaging portion is supported It is connected to the abutting part.

In one embodiment, the mounting surface is cambered surface.

In one embodiment, the quantity of the lamp holder is two.

In one embodiment, the lamp holder also includes reflection shield, the reflection shield and the upper lid integrally connected.

In one embodiment, in addition to Power Supply Assembly, the lamp box includes the first box body and the second box body, described first Box body and second box body are fastened and connected internally to form accommodating cavity, and the Power Supply Assembly is arranged in the accommodating cavity, First box body dorsad second box body one side be the mounting surface.

In one embodiment, the Power Supply Assembly includes battery cover, and the battery cover is arranged in the accommodating cavity, and The battery cover is fastened and connected with first box body or the second box body.

In one embodiment, the one side of first box body towards second box body is provided with binding block, described Two box bodys are provided with buckling groove, and the binding block is fastened in the buckling groove.

In one embodiment, the one side of first box body dorsad second box body is provided with pressing piece, described to press Casting die is connected with the binding block, and first box body offers buckling groove, and the pressing piece is movably set in the buckling groove It is interior.

Above-mentioned emergency light, lamp holder is arranged on lamp box by turning arm, and the sliding groove of lamp holder can produce relative sliding shoe Motion, and then enable lamp holder along the sliding groove on arcwall face track upset, and lamp holder can also by engaging portion around The center of circle of mounting hole is rotated so that lamp holder, which can be overturn, can also rotate so that the range of exposures of lamp holder is bigger so that emergency light Illumination is more convenient.

Brief description of the drawings

Fig. 1 is the dimensional decomposition structure diagram of the emergency light of an embodiment；

Fig. 2 is the lamp holder of an embodiment and the dimensional structure diagram of turning arm；

Fig. 3 is the dimensional structure diagram of the rotary body of an embodiment；

Fig. 4 is the dimensional structure diagram of the upper lid of an embodiment；

Fig. 5 is the first box body of an embodiment and a direction structure schematic diagram of battery cover；

Fig. 6 is the other direction structural representation of the first box body of an embodiment.

Embodiment

For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings State.Better embodiment of the present utility model is given in accompanying drawing.But, the utility model can come in many different forms Realize, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is to make to this practicality newly It is more thorough comprehensive that the disclosure of type understands.

It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ", For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag Include the arbitrary and all combination of one or more related Listed Items.

For example, a kind of emergency light, including：Lamp box, lamp holder and turning arm, the lamp box have mounting surface, the mounting surface Mounting hole is offered, the mounting hole has circular cross-section；The lamp holder includes upper lid, lower cover, lamp body and lampshade, the upper lid It is fastened and connected with the lower cover and is internally formed lamp chamber, the lamp body is arranged in the lamp chamber, the upper lid is away from the lower cover One side be provided with light-transmitting opening, the lampshade connects with the top cap and covers at the light-transmitting opening, and the lower cover is dorsad described The one side of upper lid is arcwall face, and the arcwall face offers a sliding groove；The engaging portion of the turning arm including integrally connected and Sliding part, the engaging portion is inserted in the mounting hole, and is fastened and connected with the lamp box, and the sliding part is slideably positioned in In the sliding groove.

In the present embodiment, lamp holder is arranged on lamp box by turning arm, and the sliding groove of lamp holder can produce relative sliding shoe Motion, and then enable lamp holder along the sliding groove on arcwall face track upset, and lamp holder can also by engaging portion around The center of circle of mounting hole is rotated so that lamp holder, which can be overturn, can also rotate so that the range of exposures of lamp holder is bigger so that emergency light Illumination is more convenient.

As shown in figure 1, it is the emergency light 10 of an embodiment, including：Lamp box 100, lamp holder 200 and turning arm 300, it is described Lamp box 100 has mounting surface 101, as shown in fig. 6, the mounting surface 101 offers mounting hole 102；The lamp holder 200 includes upper Lid 210, lower cover 220, lamp body 230 and lampshade 240, the upper lid 210 and the lower cover 220 are fastened and connected internally to form lamp Chamber, i.e. what the upper lid and the lower cover were interlocked is internally formed lamp chamber, and the lamp body 230 is arranged in the lamp chamber, described One side of the upper lid 210 away from the lower cover 220 is provided with light-transmitting opening 211, and the lampshade 240 is connected and covered with the upper lid 210 Located at the light-transmitting opening 211.Or, the described upper one end of lid away from the lower cover is provided with light-transmitting opening.

As shown in Fig. 2 the lower cover 220 dorsad the upper lid 210 one side be arcwall face 221, arcwall face i.e. have arc A part for the curved surface of tee section, such as sphere or ellipsoid, such as hemisphere face.The arcwall face 221 offers a cunning Dynamic groove 222；The turning arm 300 includes the engaging portion 310 and sliding part 320 of integrally connected, and the engaging portion 310 is inserted in institute State in mounting hole 102, and the engaging portion 310 is fastened and connected with the lamp box 100, the sliding part 320 is slideably positioned in institute State in sliding groove 222.

Specifically, the lamp body 230 is the light source board with LED, after the light source board is powered, and LED lights, the lamp box Be provided with Power Supply Assembly in 100, Power Supply Assembly includes power line, battery and drive circuit board, the power line and battery with drive Dynamic circuit board electrical connection, drive circuit board is electrically connected with light source board, and drive circuit board lights work, battery for driving LED For charging, and drive circuit board is powered after charging so that LED lights, the power line is used to connect external power source, right Battery is charged, and is additionally operable to power to drive circuit board so that LED lights.

Incorporated by reference to Fig. 1 and Fig. 2, for example, the lower cover 220 has arcwall face 221, the sliding groove 222 on the arcwall face 221 is Deep-slotted chip breaker, the i.e. deep-slotted chip breaker have arc section, for example, the arcwall face 221 at least has spherical calotte, for example, the arc Shape face 221 is hemisphere face, for example, the lower cover 220 is hemispherical, for example, the arcwall face 221 is from the edge of lower cover 220 to lower cover 220 middle part is gradually raised towards the direction of mounting surface 101, so, and the sliding groove 222 produces the displacement of relative sliding part 320 When, it can be considered that the sliding part 320 is slided in the sliding groove 222, so, the lamp holder 200 is then support, edge with turning arm 300 Arching trajectory where sliding groove 222 is overturn, as shown in figure 3, sliding part 320 has step 321, the step 321 is supported Position of the lower cover 220 close to the both sides of sliding groove 222 is connected to, for example, the step 321 is connected to dorsad arcwall face 221 of lower cover 220 One side, so so that the sliding part 320 can be fastened in sliding groove 222 and not fall off.For example, the sliding groove 222 is arc Shape groove, the deep-slotted chip breaker has the center of circle, and lamp holder 200 is rotated around the center of circle of deep-slotted chip breaker, for example, the lamp holder 200 is around spherical lower cover 220 The centre of sphere is rotated, so so that the range of exposures of the lamp holder 200 can adjust, and increases the range of exposures of lamp holder 200.

Because the mounting hole has circular cross-section, therefore so that turning arm can be rotated in mounting hole, so cause with The lamp holder of turning arm connection can be rotated, in order that obtaining turning arm can smoothly rotate, for example, the engaging portion has circle Section, for example, the engaging portion is cylindrical shape, for example, the engaging portion is the cylinder for having lug boss away from sliding part Shape, for example, the section of the engaging portion and the cross-sections match of the mounting hole, so, the shape of the engaging portion and the shape of mounting hole Shape is adapted, the engaging portion of cylindrical shape in mounting hole can flexible rotating, and then enable lamp holder to realize rotation.

In above-described embodiment, lamp holder 200 can be overturn along the track of the sliding groove 222 on arcwall face 221, and can Rotated around the center of circle of mounting hole 102 so that lamp holder 200, which can be overturn, can also rotate so that the direction of illumination adjustment of emergency light 10 It is more flexible so that the range of exposures of lamp holder 200 is bigger so that the illumination of emergency light 10 is more convenient.

In order that lamp holder 200 overturn it is more flexible, and reduction emergency light 10 overall volume so that emergency light 10 is more Lightly, it is easy to carry, in one embodiment, as shown in figures 1 to 6, the mounting surface 101 is cambered surface, for example, the mounting surface 101 have the cambered surface with the identical radian measure of arcwall face 221 of lower cover 220, for example, the mounting surface 101 is hemisphere face, for example, the peace Dress face 101 is gradually recessed from edge to the direction that middle part is directed away from lower cover 220 and forms cambered surface, for example, the mounting hole 102 is set It is placed in the middle part of the mounting surface 101.In the present embodiment, due to the shape and the arcwall face 221 of lower cover 220 of the mounting surface 101 More fit so that the lower cover 220 can be overturn along the surface of mounting surface 101 so that the upset of lamp holder 200 is more flexible, this Outside, due to the local dent of lamp box 100, and the lamp holder 200 is arranged in the mounting surface 101 of depression, and then effectively subtracted The small overall volume of emergency light 10 so that the shape of lamp holder 200 and lamp box 100 is more matched, and then cause emergency light 10 It is more light and handy, it is easy to carry.

In order that obtaining turning arm 300 can dismantle, it is easy to lamp holder 200 to be mounted and dismounted from lamp box 100, in an implementation In example, as shown in figure 3, the engaging portion 310 includes three snapping bars 311 for being disposed adjacent, each snapping bar 311 is and institute Sliding part 320 is stated to connect, and each snapping bar 311 has arc section, for example, the circle of the arc section of each snapping bar 311 The heart is identical, for example, the center of circle of the outer arc of the arc section of each snapping bar 311 is identical, and for example, each snapping bar 311 The center of circle of the inner arc of arc section is identical；For example, the one end of snapping bar 311 away from sliding part 320 is along perpendicular to snapping bar 311 Direction projection is provided with lug boss 312, and the lug boss 312 is connected to the back side of the mounting surface 101 of lamp box 100, the lug boss 312 The outer side edges edge of mounting hole 102 is connected to, so, the lug boss 312 is connected to the back side of the mounting surface 101 of lamp box 100 so that Each snapping bar 311 realizes snapping with lamp box 100.

For example, therefore, each snapping bar 311 is adjacent to surround cylindrical shape, so, and each snapping bar 311 can be along mounting hole 102 are rotated so that lamp holder 200 can rotate, and each snapping bar 311 is bent towards the center of circle of arc section, then cause snapping bar Distance reduces between 311 so that the overall width of the engaging portion 310 reduces, and can fill taking-up in mounting hole 102 so that the lamp First 200 can dismantle from lamp box 100.For example, the snapping bar 311 is that elastic strip, i.e. the snapping bar 311 are flexible, install During turning arm 300, because the stress of snapping bar 311 is bent towards the center of circle direction of arc section so that snapping bar 311 can be from suitable Profit insertion mounting hole 102 in, then, snapping bar 311 natural resiliency effect under recover shape so that each snapping bar 311 it is convex The edge of mounting hole 102 can be connected to by playing portion 312, i.e., each lug boss 312 is connected to the back side of the mounting surface 101 of lamp box 100, The installation of turning arm 300 is realized, the installation and removal of turning arm 300 are realized by said structure so that the installation of lamp holder 200 It is quick with convenient disassembly.

In order to preferably fix the engaging portion 310, in one embodiment, as shown in figure 5, the back of the body of the mounting surface 101 Face is provided with abutting part 103 along the mounting hole 102, incorporated by reference to Fig. 3 and Fig. 5, and the engaging portion 310 is connected to the abutting part 103, for example, the lug boss 312 of the snapping bar 311 is connected to the abutting part 103.For example, the mounting hole 102 is remote Edge from one end of the mounting surface 101 is provided with abutting part 103, for example, the abutting part 103 has ring section, this Sample, the abutting part 103 can increase the frictional force with lug boss 312 so that the engaging portion 310 can firmly snap onto installation In hole 102.

In order that the illumination zone for obtaining emergency light 10 is bigger, in one embodiment, Fig. 1 is referred to, the lamp holder 200 Quantity is two, for example, the mounting surface 101 includes two symmetrically arranged installation curved surfaces, for example, two install curved surfaces on The axis of lamp box 100 is symmetrical arranged, for example, each installation curved surface opens up a mounting hole 102, for example, in each mounting hole 102 Rotation is provided with turning arm 300, for example, the sliding part 320 of each turning arm 300 is slideably positioned in the sliding groove of a lamp holder 200 In 222, for example, each curved surface of installing is with the identical shape of arcwall face 221 with corresponding lower cover 220, so, by lamp Two lamp holders 200 are set on box 100, and two lamp holders 200 can overturn and rotate respectively, and then cause the illumination of emergency light 10 Scope is bigger, further increases the convenience used of emergency light 10.

In order that it is more compact to obtain the structure of lamp holder 200 so that lamp holder 200 is more firm, in one embodiment, such as Fig. 4 Shown, the lamp holder 200 also includes reflection shield 212, the reflection shield 212 and the upper integrally connected of lid 210, for example, described Reflection shield 212 is that two ends have opening, the penetrating taper in middle part, for example, the diameter of reflection shield 212 is by close to the one of lamp body 230 Hold to the other end and gradually increase, for example, the one end that is relatively large in diameter of the reflection shield 212 and the upper integrally connected of lid 210, example Such as, one end that the reflection shield 212 is relatively large in diameter is connected to the edge of the light-transmitting opening 211 of the upper lid 210, for example, this is reflective Cover 212 surfaces and be provided with reflector layer, reflection shield 212 enables to the light of lamp body 230 more to concentrate so that the photograph of emergency light 10 Penetrate better.By the way that reflection shield 212 is wholely set with upper lid 210 so that the structure of lamp holder 200 is more compact, and cause The structure of lamp holder 200 is more firm.

In order that the structure for obtaining emergency light 10 is more compact, in one embodiment, incorporated by reference to Fig. 1 and Fig. 5, emergency light 10 Also include Power Supply Assembly 400, the lamp box 100 includes the first box body 110 and the second box body 120, first box body 110 and institute State the second box body 120 to be fastened and connected internally to form accommodating cavity, i.e. first box body 110 and the phase of the second box body 120 What is fastened is internally formed accommodating cavity, and the Power Supply Assembly 400 is arranged in the accommodating cavity, first box body 110 dorsad institute The one side for stating the second box body 120 is the mounting surface 101, i.e. the rotation of lamp holder 200 is arranged at the first box body 110 dorsad the second box body 120 one side.For example, the Power Supply Assembly 400 includes power line, battery and drive circuit board, by by above-mentioned Power Supply Assembly 400 It is arranged in lamp box 100 so that the overall structure of emergency light 10 is more compact so that the volume of emergency light 10 is smaller, is easy to take Band.

For self-contained battery, and make it that battery is easy for removal and installation, in one embodiment, as shown in Figure 1 and Figure 5, The Power Supply Assembly 400 includes battery cover 410, and the battery cover 410 is arranged in the accommodating cavity, and the battery cover 410 It is fastened and connected with first box body 110, specifically, the battery cover 410 has rectangular parallelepiped structure, and the battery cover 410 is used to pacify Self-contained battery is filled, for example, the edge of the battery cover 410 is provided with fastening structure, the first box body 110 is provided with fastening space, should In fastening structure fastening and the fastening space, so that the battery cover 410 is easy for removal and installation, for example, battery cover 410 Both sides edge sets flexible inserted sheet 411, and one end difference of two elastic inserted sheets 411 away from the battery cover 410 is outside Lateral bend, and the outside difference plug division 412 of the two described one end of elastic inserted sheet 411 away from the battery cover 410, for example, First box body 110 is provided with two slots 111 corresponding with two elasticity inserted sheets 411, and the activity of plug division 412 is plugged In in the slot 111, so, when the inside lateral bend deformation of the elastic stress of inserted sheet 411, two slots 111 can be located at Inner side, and then two slots 111 so that two plug divisions 412 are alignd respectively, then, two elastic inserted sheets 411 are in natural resiliency Effect is lower to recover shape, and two elastic inserted sheet 411 deformation laterally recover shape, and then two plug divisions 412 are blocked respectively It is buckled in two slots 111, it is achieved thereby that the installation of battery cover 410, during dismounting, it is only necessary to which two elastic inserted sheets 411 are exerted a force, So that two inside lateral bends of elastic inserted sheet 411 so that two plug divisions 412 depart from two slots 111 respectively, you can realize The dismounting of battery cover 410.In other examples, the battery cover 410 is fastened on the second box body 120, in the present embodiment not Burden description again.

In order to realize the assembling of the first box body 110 and the second box body 120, in one embodiment, referring again to Fig. 5, The one side of first box body 110 towards second box body 120 is provided with binding block 112, and second box body 120 is provided with Buckling groove (not shown), the binding block 112 is fastened in the buckling groove.In the present embodiment, when binding block 112 is fastened on Close in groove so that the first box body 110 and the second box body 120 are fastened and connected, realize the first box body 110 and the second box body 120 Assembling.In order that the first box body 110 and the second box body 120 connect more firm, for example, the quantity of the binding block 112 is Four, the quantity of the buckling groove is four, for example, four binding blocks 112 are respectively as square four diagonal settings In on the first box body 110, so, the cooperation of four buckling grooves of four binding blocks 112 so that the first box body 110 and the second box Fastening dynamics between body 120 is bigger, and fastening dynamics is more uniformly spread, and then causes the first box body 110 and the second box body 120 connections are more firm.

In order to realize the fast quick-detach to lamp box 100, in one embodiment, as shown in Figure 5 and Figure 6, first box The one side of dorsad second box body 120 of body 110 is provided with pressing piece 113, and the pressing piece 113 connects with the binding block 112 Connect, first box body 110 is offered by indent 114, the pressing piece 113 is movably set in described by indent 114.Specifically Ground, the pressing piece 113 is flexible, when the pressing of the stress of pressing piece 113 during deformation, the pressing piece 113 shape in by indent 114 Become, the pressing piece 113 drives binding block 112 to send deformation bending, and then causes binding block 112 to depart from buckling groove, such first The i.e. detachable separation of the box body 120 of box body 110 and second, is torn open by way of pressing the pressing piece 113 to lamp box 100 Unload so that the dismounting of lamp box 100 is more convenient and quick.

The various embodiments described above, lamp holder is arranged on lamp box by turning arm, and the sliding groove of lamp holder can produce relative slip The motion of block, and then track of the lamp holder along the sliding groove on arcwall face is overturn, and lamp holder can also pass through engaging portion Rotated around the center of circle of mounting hole so that lamp holder, which can be overturn, can also rotate so that the range of exposures of lamp holder is bigger so that emergency light Illumination it is more convenient.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.

Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed, But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (10)

1. a kind of emergency light, it is characterised in that including：

Lamp box, the lamp box has mounting surface, and the mounting surface offers mounting hole；

Lamp holder, the lamp holder includes upper lid, lower cover, lamp body and lampshade, and the upper lid and the lower cover are fastened and connected with internally Lamp chamber is formed, the lamp body is arranged in the lamp chamber, the upper one side of the lid away from the lower cover is provided with light-transmitting opening, described Lampshade and the top cap connect and cover at the light-transmitting opening, and the one side of the lower cover dorsad upper lid is arcwall face, described Arcwall face offers a sliding groove；

Turning arm, the turning arm includes the engaging portion and sliding part of integrally connected, and the engaging portion is inserted in the mounting hole It is interior, and be fastened and connected with the lamp box, the sliding part is slideably positioned in the sliding groove.

2. emergency light according to claim 1, it is characterised in that the engaging portion includes at least two buttons being disposed adjacent Narrow bars, each snapping bar is connected with the sliding part.

3. emergency light according to claim 1, it is characterised in that the back side of the mounting surface is provided with along the mounting hole Abutting part, the engaging portion is connected to the abutting part.

4. emergency light according to claim 1, it is characterised in that the mounting surface is cambered surface.

5. emergency light according to claim 1, it is characterised in that the quantity of the lamp holder is two.

6. emergency light according to claim 1, it is characterised in that the lamp holder also includes reflection shield, the reflection shield with The upper lid integrally connected.

7. emergency light according to claim 1, it is characterised in that also including Power Supply Assembly, the lamp box includes the first box Body and the second box body, first box body and second box body are fastened and connected internally to form accommodating cavity, the power supply group Part is arranged in the accommodating cavity, first box body dorsad second box body one side be the mounting surface.

8. emergency light according to claim 7, it is characterised in that the Power Supply Assembly includes battery cover, the battery cover It is arranged in the accommodating cavity, and the battery cover is fastened and connected with first box body or the second box body.

9. emergency light according to claim 7, it is characterised in that one side of first box body towards second box body Binding block is provided with, second box body is provided with buckling groove, and the binding block is fastened in the buckling groove.

10. emergency light according to claim 9, it is characterised in that first box body dorsad second box body one Face is provided with pressing piece, and the pressing piece is connected with the binding block, and first box body offers buckling groove, the pressing piece It is movably set in the buckling groove.