CN208952359U - Air conditioner - Google Patents

Abstract

The utility model provides a kind of air conditioner, is related to sliding door of air conditioner technical field.A kind of air conditioner comprising ontology, the first sliding door and the second sliding door, the first sliding door and the second sliding door are slidably connected to ontology.First sliding door includes the first main body and first along structure, first along structure setting in the side of the first main body, first has the first binding face along structure.Second sliding door includes the second main body and second along structure, second along structure setting in the side of the second main body, second has the second binding face along structure.It is outwardly protruded in the middle part of first binding face, and forms protrusion.It is recessed inwardly in the middle part of second binding face, and forms groove.Protrusion can protrude into inside grooves and the first binding face is made to fit in the second binding face.Air conditioner provided by the utility model can make the appearance looks elegant of air conditioner graceful, improve the usage experience sense of user.

Description

Air conditioner

Technical field

The utility model relates to sliding door of air conditioner technical field, in particular to a kind of air conditioner.

Background technique

In the life that air-conditioning is popularized, either hot summer or cruel cold winter, most people can all select to lead to Air-conditioning is crossed by indoor air conditioning to comfortable degree, to provide environment of comfortably living.

In field of air conditioning, small-sized air conditioner also starts the trend for universal most people life occurred, minitype air conditioner Device is easy to remove, while also saving indoor space, is extraordinary selection for most of families.

In the prior art, in the air conditioner with sliding door, in order to mitigate the quality of air conditioner, plastics material is generallyd use Material carries out the manufacture of sliding door, but the sliding door of plastic material usually gap occurs when closure, then can be in sliding door Occurring a black seam when closing reduces the usage experience sense of user so that appearance is not graceful.

Utility model content

In view of this, the utility model is directed to a kind of air conditioner, so that the appearance looks elegant of air conditioner is graceful, improve The usage experience sense of user.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

A kind of air conditioner, the air conditioner include ontology, the first sliding door and the second sliding door, first sliding door and Second sliding door is slidably connected to the ontology.First sliding door includes the first main body and first along structure, Described first along structure setting in first main body close to the side of second sliding door, described first is leaned on along structure The side of nearly second sliding door has the first binding face.Second sliding door includes the second main body and second edge knot Structure, described second along structure setting in second main body close to the side of first sliding door, second edge knot Structure has the second binding face close to the side of first sliding door.It outwardly protrudes, and is formed in the middle part of first binding face Protrusion.It is recessed inwardly in the middle part of second binding face, and forms groove.The protrusion can protrude into the inside grooves and make First binding face fits in second binding face.

Further, described first includes the first extension, the first sticking part and third sticking part along structure.Described Extend the side of one extension from first main body.First sticking part extend from first extension and Out, and with first extension the first angle is formed.The third sticking part extends from first sticking part, institute State and first binding face be collectively formed on the outside of the first sticking part and the third sticking part, and first sticking part and Angle is formed between the third sticking part so that the protrusion is collectively formed.

Further, first extension is equal with first main body, and first sticking part is perpendicular to described One extension, the third sticking part are partial to bending on the inside of first main body.

Further, when first binding face fits in second binding face, first sticking part is fitted in Second binding face forms gap between the third sticking part and second binding face.

Further, described first further includes third extension along structure, and the third extension is pasted by the third Conjunction portion is bent to form far from the side of first sticking part, and the third extension is partial to one lateral bending of the first sliding door Folding, and the third extension is parallel to first sliding door.

Further, described second includes the second extension, the second sticking part and the 4th sticking part along structure.Described Extend the side of two extensions from second main body.Second sticking part extend from second extension and Out, and with second extension the second angle is formed.4th sticking part extends from second sticking part, institute State and second binding face be collectively formed on the outside of the second sticking part and the 4th sticking part, and second sticking part and Angle is formed between 4th sticking part so that the groove is collectively formed.

Further, second extension is equal with second main body, and second sticking part is perpendicular to described Two extensions, the 4th sticking part are partial to bending on the inside of first main body.

Further, when first binding face fits in second binding face, second sticking part is fitted in First binding face forms gap between the 4th sticking part and first binding face.

Further, described second further includes the 4th extension along structure, and the 4th extension is by the 4th patch Conjunction portion is bent to form far from the side of second sticking part, and the 4th extension is partial to one lateral bending of the second sliding door Folding, and the 4th extension is parallel to second main body.

Further, described first passes through metal material along structure and bends along structure and described second.

Compared with the existing technology, air conditioner described in the utility model has the advantage that

The protrusion that air conditioner described in the utility model is outwardly protruded in structure by first is with second along structure On the groove to be formed that is recessed inwardly match so that the first binding face fits in the second binding face, so that from the first binding face And the second gap between binding face can be stopped by the internal perisporium of groove or the outside of protrusion when seeing the inside into air conditioner Sight is avoided that the appearance of black seam, ensure that the appearance looks elegant of air conditioner is graceful.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is the structural schematic diagram of air conditioner described in the utility model embodiment；

Fig. 2 is the enlarged structure schematic diagram in Fig. 1 at II；

Fig. 3 is the cross-sectional view of air conditioner partial structurtes described in the utility model embodiment；

Fig. 4 is the structural schematic diagram of air conditioner part described in the utility model embodiment；

Fig. 5 is the enlarged structure schematic diagram in Fig. 4 at V；

Fig. 6 is the cross-sectional view of air conditioner partial structurtes described in the utility model embodiment.

Description of symbols:

1- air conditioner, the first main body of 3-, the second main body of 4-, the first extension of 5-, the second extension of 6-, 7- first are bonded Portion, the second sticking part of 8-, 9- third sticking part, the 4th sticking part of 10-, 11- third extension, the 4th extension of 12-, 13- One boss, 14- second boss, 15- first is along structure, and 16- second is along structure, the first angle of 17-, the second angle of 18-, The first binding face of 19-, the second binding face of 20-, 21- protrusion, 22- groove.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

First embodiment

Referring to Fig. 1, providing a kind of air conditioner 1 in the present embodiment, it is applied to air conditioner (not shown), and slide Door is avoided that the appearance of black seam, guarantees that the appearance looks elegant of air conditioner 1 is graceful, promotes the usage experience sense of user.

Fig. 1 and Fig. 2 are please referred to, air conditioner 1 includes ontology, the first sliding door and the second sliding door.Wherein, first is sliding Dynamic door and the second sliding door are slidably connected to ontology so that the first sliding door and the second sliding door can relative to ontology into Row sliding.Also, the first main body 3 and the second main body 4 are located at the same sliding surface, that is, in the present embodiment, the first sliding door Plane or curved surface where sliding trace and the plane where the sliding trace of the second sliding door or curved surface are same flat Face or the same curved surface.First sliding door and the second sliding door can be slid in opposition or are located remotely from each other cunning relative to ontology It is dynamic, so that the first sliding door and the second sliding door are in the state opened.Wherein, the first sliding door and the second sliding door are opposite It slides and the first sliding door can be made to fit in the second sliding door close to the first sliding door close to a side of the second sliding door A side so that the first sliding door and the second sliding door are in the state closed.

In the present embodiment, including the first main body 3 and first along structure 15, first sets the first sliding door along structure 15 The first main body 3 is placed in close to the side of the second sliding door, first is bent along structure 15 by metal material.Also, the Including the second main body 4 and second along structure 16, second is set to the second main body 4 along structure 16 and slides close to first two sliding doors The side of dynamic door, second is bent along structure 16 by metal material.It is closed when the first sliding door and the second sliding door are in When closed state, first fits in second along structure 16 along structure 15.

Wherein, by the characteristic of metal material, first is enabled closely to paste along structure 15 and second along structure 16 It is combined, that is, is avoided that the first sliding door and the second sliding door the case where black seam occur in closure, ensure that air conditioner 1 Appearance looks elegant is graceful, improves the usage experience sense of user.

Fig. 1, Fig. 2 and Fig. 3 are please referred to, in the present embodiment, first along structure 15 close to the one of the second sliding door Side has the first binding face 19, and the middle part of the first binding face 19 outwardly protrudes, and forms protrusion 21.

In addition, second has the second binding face 20, the second binding face 20 close to the side of the first sliding door along structure 16 Middle part be recessed inwardly, and form groove 22.

Wherein, it is closed when the first sliding door and the second sliding door move toward one another to the first sliding door and the second sliding door to be in When state, protrusion 21 is stretched to inside groove 22, and the first binding face 19 is made to fit in the second binding face 20, that is, is able to achieve The closing of first sliding door and the second sliding door.

Wherein, it due to the cooperation of protrusion 21 and groove 22, makes it possible to pass through the first sliding door and the second sliding door in user Between gap when seeing to 1 inside of air conditioner, sight, Bian Wu are blocked by the internal perisporium of groove 22 or the outside of protrusion 21 Method directly passes through the inside that air conditioner 1 is seen in gap, is just avoided that the appearance of black seam, guarantees that the appearance looks elegant of air conditioner 1 is graceful, Promote the usage experience sense of user.

Wherein, Fig. 2 and Fig. 3 are please referred to, first includes the first extension 5 and the first sticking part 7 along structure 15, the One extension 5 extends from the first main body 3, and the first extension 5 is equal with the first main body 3, to guarantee that first extends The stability in portion 5.Specifically, the first extension 5 extends from the first main body 3 close to the side of the second main body 4.First fitting Portion 7 then extends from the first extension 5, specifically, the first sticking part 7 from the first extension 5 far from the first main body 3 one Side is extended, and forms angle between the first sticking part 7 and the first extension 5.Wherein, the first sticking part 7 towards first The inside of main body 3 extends, i.e. the first sticking part 7 extends towards ontology.

Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are please referred to, likewise, second includes the second extension 6 and second along structure 16 Sticking part 8, wherein the second extension 6 extends from the second main body 4, and the second extension 6 is equal with the second main body 4, To guarantee the stability of the second extension 6.Specifically, the second extension 6 prolongs from the second main body 4 close to the side of the first main body 3 It stretches.Second sticking part 8 then extends from the second extension 6, specifically, the second sticking part 8 is remote from the second extension 6 Side from the second main body 4 is extended, and forms angle between the second sticking part 8 and the second extension 6.Likewise, the Two sticking parts 8 extend towards the inside of the second main body 4, i.e. the second sticking part 8 extends towards ontology.

When the first sliding door and the second sliding door are in close state, the first extension 5 is equal with the second extension 6, And the first sticking part 7 fits in the second sticking part 8.

It should be noted that in the present embodiment, the angle formed between the first sticking part 7 and the first extension 5 is One angle 17, the angle formed between the second sticking part 8 and the second extension 6 are the second angle 18.First angle 17 and second Angle 18 is complementary.When the first sliding door and the second sliding door are in close state, the first sticking part 7 can be made main far from first The side of body 3 is fitted closely with the second sticking part 8 far from the side of the second main body 4, guarantees the first sticking part 7 and the second sticking part The reliability being bonded between 8.

Further, Fig. 2 and Fig. 3 are please referred to, in the present embodiment, the first sticking part 7 is perpendicular to the first extension 5, the second sticking part 8 is perpendicular to the second extension 6.It should be appreciated that in other embodiments, the first sticking part 7 and first extends The first angle 17 formed between portion 5 is also possible to other numerical value, such as 100 degree or 80 degree etc., similarly, the second sticking part 8 and second the second angle 18 for being formed between extension 6 be also possible to other numerical value, such as 80 degree or 100 degree etc..

Further, the first extension 5 is bent to form first boss 13, first boss 13 far from the side of the first main body 3 The first main body 3 is protruded from, and the side of the first sticking part 7 from first boss 13 is extended.In the present embodiment, convenient for use In by applying external force in first boss 13, so that first boss 13 can drive the first main body 3 to be slided relative to ontology It is dynamic.Likewise, the second extension 6 is bent to form second boss 14 far from the side of the second main body 4, second boss 14 protrudes from Two main bodys 4, and the side of the second sticking part 8 from second boss 14 is extended.Similarly, user can apply in second boss 14 Add external force, in order to drive the second main body 4 to slide relative to ontology by second boss 14.

Further, chamfering is arranged in the junction of second boss 14 and the second sticking part 8.Pass through second boss 14 and The chamfering of the junction setting of two sticking parts 8, so that when being bonded to each other between the first sticking part 7 and the second sticking part 8, energy So that gap is formed between first boss 13 and second boss 14, convenient for for applying to first boss 13 or second boss 14 External force, can be convenient for for the first sliding door and the second sliding door phase so that first boss 13 and second boss 14 are located remotely from each other It is mutually separate.

It should be appreciated that in other embodiments, the junction of first boss 13 and the first sticking part 7 equally can be set down Angle.That is, in other embodiments, it can be, chamfering, second boss is arranged in the junction of first boss 13 and the first sticking part 7 14 and second the junction of sticking part 8 be not provided with chamfering；Or the junction setting of first boss 13 and the first sticking part 7 is fallen Angle, and chamfering is arranged in the junction of second boss 14 and the second sticking part 8.

Further, first further includes third sticking part 9 along structure 15, and third sticking part 9 is separate from the first sticking part 7 The side of first extension 5 is extended, and third sticking part 9 is partial to bend on the inside of the first main body 3, and with the first sticking part 7 Between form angle so that third sticking part 9 and the first sticking part 7 be collectively formed protrusion 21.Likewise, second edge knot Structure 16 further includes the 4th sticking part 10, the 4th sticking part 10 extend from the second sticking part 8 far from the side of the second extension 6 and Out, the 4th sticking part 10 is partial to the inside bending of the second main body 4, and forms angle between the second sticking part 8, so that the Groove 22 is collectively formed in four sticking parts 10 and the second sticking part 8.

In addition, when the first sticking part 7 fits in the second binding face 20, between third sticking part 9 and the second binding face 20 Form gap.Likewise, when the second sticking part 8 fits in the first binding face 19, the 4th sticking part 10 and the first binding face 19 Between form gap.Specifically, in the present embodiment, the fitting between the first binding face 19 and the second binding face 20 passes through first Fitting realization between sticking part 7 and the second sticking part 8, in addition, when the first sticking part 7 fits in the second sticking part 8, third Gap is formed between sticking part 9 and the 4th sticking part 10.

In the present embodiment, the first sliding door is further ensured that by the setting of third sticking part 9 and the 4th sticking part 10 Fitting compactness when fitting with the second sliding door.That is, when the first sticking part 7 and the second sticking part 8 are close to each other, and if There are some gaps when being bonded between the first sticking part 7 and the second sticking part 8, at this point, since the first sticking part 7 and third are bonded Angle is formed between portion 9, and forms angle between the second sticking part 8 and the 4th sticking part 10, is enabled and is passed through by gap 4th sticking part 10 or third sticking part 9 block, that is, further avoid the appearance of black seam, ensure that the appearance beauty of air conditioner 1 It sees graceful.

Specifically, in the present embodiment, the side that third sticking part 9 is biased to the first main body 3 extends, i.e. third sticking part 9 And first the obtuse angle that is formed between sticking part 7 be located at the first sticking part 7 close to the side of the first main body 3.In addition, the 4th fitting The side that portion 10 is biased to the first main body 3 extends, i.e. the obtuse angle formed between the 4th sticking part 10 and the second sticking part 8 is located at the Two sticking parts 8 are close to the side of the first main body 3.It should be appreciated that in other embodiments, third sticking part 9 and the 4th sticking part 10 set-up mode can also be different, for example, third sticking part 9 and the 4th sticking part 10 extend along broken line direction, Huo Zhe Three sticking parts 9 and the 4th sticking part 10 are along arc direction extension etc..

It should be appreciated that in other embodiments, when being bonded to each other between the first sticking part 7 and the second sticking part 8, third Sticking part 9 and the 4th sticking part 10 can also fit.

In addition, first further includes third extension 11 along structure 15, third extension 11 is by third sticking part 9 far from The side of one sticking part 7 is bent to form, and third extension 11 is biased to the bending of 3 side of the first main body.In addition, second edge knot Structure 16 further includes the 4th extension 12, side bent of the 4th extension 12 by the 4th sticking part 10 far from the second sticking part 8 At, and the 4th extension 12 is biased to the bending of 4 side of the second main body.By the way that third extension 11 and the 4th extension 12 is arranged, Protective action can be provided to third sticking part 9 and the 4th sticking part 10 respectively, third sticking part 9 and the 4th sticking part 10 is avoided to hit Hit scratch ontology.

In the present embodiment, the first extension 5 is parallel to third extension 11, and the second extension 6 is parallel to the 4th extension Portion 12.It should be noted that when the first extension 5, the second extension 6, third extension 11 and the 4th extension 12 are arc When shape, the distance between the first extension 5 and third extension 11 are equal everywhere same to be parallel to the as the first extension 5 Three extensions 11, equal same energy extends as second everywhere for the distance between same second extension 6 and the 4th extension 12 Portion 6 is parallel to the 4th extension 12.

In addition, it is necessary to explanation, in the present embodiment, the first extension 5, first boss 13, the first sticking part 7, the Three sticking parts 9 and third extension 11 are bent to form by a metalwork, i.e. the first extension 5, first boss 13, first Sticking part 7, third sticking part 9 and third extension 11 are integrally formed.Similarly, the second extension 5, second boss 14, second are pasted Conjunction portion 8, the 4th sticking part 10 and the 4th extension 12 are bent to form by a metalwork, i.e., the second extension 5, second is convex Platform 14, the second sticking part 8, the 4th sticking part 10 and the 4th extension 12 are integrally formed.

The air conditioner 1 that there is provided in the present embodiment is surrounded using metal material bending, by the characteristic of metal material, so that the One along structure 15 and second along structure 16 can be secret fit together, be avoided that the appearance of black seam, just can improve air-conditioning The problem of the not graceful beauty of 1 appearance of device.Just it can make the graceful beauty of air conditioner appearance using the air conditioner 1, improve user Usage experience sense.And fitting closely between the first sticking part 7 and the second sticking part 8 and third sticking part 9 can be passed through With the fitting of the 4th sticking part 10, realization first is along structure 15 and second fitting between structure 16.Also, the first patch Conjunction portion 7 and third sticking part 9 form obtuse angle, and the second sticking part 8 and the 4th sticking part 10 form obtuse angle, can further avoid black seam Appearance, the appearance for further ensuring air conditioner 1 is graceful beautiful.

Second embodiment

Referring to Fig. 6, providing a kind of air conditioner (figure is not marked) in the present embodiment, the appearance looks elegant of air conditioner can be made Gracefulness improves the usage experience sense of user.

Wherein, the difference of the air conditioner 1 provided in the air conditioner and first embodiment provided in the present embodiment is, first Door is different along the set-up mode of structure 16 along structure 15 and second, and in the present embodiment, first is set to the along structure 15 The outside of one main body 3, second is set to the outside of the second main body 4 along structure 16.

In the present embodiment, outside of first extension 5 from the end of the first main body 3 towards the first main body 3 extends, i.e., and the The side that one extension 5 is directed away from ontology from the first main body 3 extends.End court of second extension 6 from the second main body 4 Extend to the outside of the second main body 4, i.e. the side that the second extension 6 is directed away from ontology from the first main body 3 extends.That is, In the present embodiment, the first extension 5 and the second extension 6 are respectively arranged at the outside of the first sliding door and the second sliding door.This When, the first sticking part 7 and the second sticking part 8 are respectively from the end on the outside of the end in 5 outside of the first extension and the second extension 6 Extend, i.e. the first sticking part 7 and the second sticking part 8 are respectively arranged at the outside of the first sliding door and the second sliding door. When the first sliding door and the second sliding door are in the state closed, the first sticking part 7 and the second sticking part 8 fit, and The first sticking part 7 and the second sticking part 8 is avoided to generate gap therebetween when fitting by the characteristic of metal.In addition, from The third sticking part 9 extended on one sticking part 7 and the 4th sticking part 10 extended from the second sticking part 8 are also distinguished Positioned at the outside of the first sliding door and the second sliding door.Similarly, the first bending part 11 and the second bending part 12 are also set respectively simultaneously It is placed in the outside of the first sliding door and the second sliding door.In addition, in the present embodiment, the first bending part 11 is far from third sticking part 9 and second bending part 12 far from the end of the 4th sticking part 10 be respectively facing the first main body 3 and the second main body 4 bending, and Formed it is substantially z-shaped so that the first extension 5, the first sticking part 7, third sticking part 9 and the first bending part 11 are collectively formed Bulge-structure, so that raised knot is collectively formed in the second extension 6, the second sticking part 8, the 4th sticking part 10 and the second bending part 12 Structure is sliding convenient for first in order to drive the first sliding door and the second sliding door mobile by applying external force to two bulge-structures The opening and closing of dynamic door and the second sliding door.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (10)

1. a kind of air conditioner, which is characterized in that the air conditioner (1) includes ontology, the first sliding door and the second sliding door, described First sliding door and second sliding door are slidably connected to the ontology；

Including the first main body (3) and first along structure (15), described first is arranged first sliding door along structure (15) In first main body (3) close to the side of second sliding door, described first sliding close to described second along structure (15) The side of dynamic door has the first binding face (19)；

Including the second main body (4) and second along structure (16), described second is arranged second sliding door along structure (16) In second main body (4) close to the side of first sliding door, described second sliding close to described first along structure (16) The side of dynamic door has the second binding face (20)；

It is outwardly protruded in the middle part of first binding face (19), and forms raised (21)；

It is recessed inwardly in the middle part of second binding face (20), and forms groove (22)；

When first sliding door and second sliding door are in close state, the protrusion (21) protrudes into the groove (22) inside and first binding face (19) is made to fit in second binding face (20).

2. air conditioner according to claim 1, which is characterized in that described first includes the first extension along structure (15) (5), the first sticking part (7) and third sticking part (9)；

Extend the side of first extension (5) from first main body (3)；

First sticking part (7) is extended from first extension (5), and is formed with first extension (5) First angle (17)；

The third sticking part (9) is extended from first sticking part (7), first sticking part (7) and described First binding face (19), and first sticking part (7) and third patch are collectively formed on the outside of three sticking parts (9) Angle is formed between conjunction portion (9) so that raised (21) are collectively formed.

3. air conditioner according to claim 2, which is characterized in that first extension (5) and first main body (3) Equal, first sticking part (7) is partial to described first perpendicular to first extension (5), the third sticking part (9) Bending on the inside of main body (3).

4. air conditioner according to claim 2, which is characterized in that when first binding face (19) fits in described second When binding face (20), first sticking part (7) fits in second binding face (20), the third sticking part (9) and institute It states and forms gap between the second binding face (20).

5. air conditioner according to claim 2, which is characterized in that described first further includes that third extends along structure (15) Portion (11), side bent of the third extension (11) by the third sticking part (9) far from first sticking part (7) At the third extension (11) is partial to the bending of first sliding door side, and the third extension (11) is parallel In first sliding door.

6. air conditioner according to claim 1, which is characterized in that described second includes the second extension along structure (16) (6), the second sticking part (8) and the 4th sticking part (10)；

Extend the side of second extension (6) from second main body (4)；

Second sticking part (8) is extended from second extension (6), and is formed with second extension (6) Second angle (18)；

4th sticking part (10) is extended from second sticking part (8), second sticking part (8) and described Second binding face (20), and second sticking part (8) and the described 4th are collectively formed on the outside of four sticking parts (10) Angle is formed between sticking part (10) so that the groove (22) are collectively formed.

7. air conditioner according to claim 6, which is characterized in that second extension (6) and second main body (4) Equal, for second sticking part (8) perpendicular to second extension (6), the 4th sticking part (10) is partial to described Bending on the inside of one main body (3).

8. air conditioner according to claim 6, which is characterized in that when first binding face (19) fits in described second When binding face (20), second sticking part (8) fits in first binding face (19), the 4th sticking part (10) and institute It states and forms gap between the first binding face (19).

9. air conditioner according to claim 6, which is characterized in that described second further includes the 4th extension along structure (16) Portion (12), the 4th extension (12) are bent by the 4th sticking part (10) far from the side of second sticking part (8) It is formed, the 4th extension (12) is partial to the bending of second sliding door side, and the 4th extension (12) is flat Row is in second main body (4).

10. air conditioner according to claim 1, which is characterized in that described first along structure (15) and second described It is bent by metal material along structure (16).