CN216317401U - Detachable brush roller assembly - Google Patents

Abstract

The utility model discloses a detachable brush roll assembly, which comprises a brush roll main body, wherein one end of the brush roll main body is provided with a first connecting seat rotatably connected with the brush roll main body, the other end of the brush roll main body is provided with a first connecting head, the first connecting seat can be matched with a first positioning groove on a base, the first connecting head can be detachably connected with an output end of a driving device on the base, and a cover plate can lock the first connecting seat on the base along with the detachable connection of the cover plate on the base. The brush roller assembly is convenient and quick to operate, is convenient to dismount for cleaning and the like, is time-saving and labor-saving, is high in efficiency and stability and reliability, and can meet the higher and higher requirements of users.

Description

Detachable brush roller assembly

Technical Field

The utility model relates to cleaning equipment, in particular to a detachable brush roller assembly.

Background

Early ground cleaning tools used by people were brooms, mops, etc., which relied primarily on manual operation by people to accomplish the cleaning. With the rapid development of science and technology and the continuous progress of society, the living conditions of people are continuously improved, the requirements on living environment are higher and higher, the cleaning concept is more and more emphasized, and the requirements of people on ground cleaning tools are also gradually improved. Traditional dust catcher relies on electric power energy supply, absorbs subaerial rubbish, dust etc. through producing the negative pressure, but can't clear up firmly attached some rubbish and spot etc. subaerial, consequently, drive the roller brush formula cleaning device who cleans ground through the motor and use more and more. However, the brush roller of the existing cleaning device is inconvenient to disassemble, is not easy to clean, consumes time and labor, is low in efficiency, poor in stability and reliability, and cannot meet the higher and higher requirements of users.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a detachable brush roller assembly, which can solve at least one of the technical problems, and the technical scheme of the utility model is as follows:

the utility model provides a can dismantle brush roller assembly, includes the brush roll main part, and the one end of brush roll main part is provided with rather than rotating the first connecting seat of being connected, and the other end of brush roll main part is provided with first connector, and first connecting seat can cooperate with the first constant head tank on the base, and first connector can with the base on drive arrangement's output separable connection, along with the apron can dismantle the connection on the base, the apron can make first connecting seat locking on the base.

In some embodiments, the first connecting seat is provided with a first slider, a first sliding groove matched with the first slider, and an elastic resetting mechanism, the first protrusion on the cover plate can push the first slider to slide along the first sliding groove so that the first slider is inserted into the clamping groove on the base for locking, and the elastic resetting mechanism can push the first slider to automatically reset to release the locking of the first slider and the base along with the separation of the cover plate and the base.

In some embodiments, the elastic reset mechanism includes a first rotating shaft, a rotating rod and a first torsion spring, the rotating rod and the first torsion spring are fixedly connected with the first rotating shaft, a first stop block matched with the first torsion spring is arranged on the first connecting seat, a first through hole matched with the rotating rod is arranged on the first sliding block, the rotating rod passes through the first through hole, the first projection can push the rotating rod to rotate, the rotating rod can push the first sliding block to slide so that the first sliding block can be inserted into a clamping groove on the base to be locked, meanwhile, the first torsion spring can be driven to be twisted, and the twisted first torsion spring can drive the rotating rod to reversely rotate so that the first sliding block automatically resets.

In some embodiments, one end of the first slider is provided with a second protrusion for connecting with a slot on the base, and the upper end of the rotating rod is provided with a third protrusion matched with the first protrusion.

In some embodiments, the first sliding block, the first sliding groove and the elastic return mechanism are disposed in the first connecting seat, and the first connecting seat is provided with a first hole body for the first protruding block to pass through and a second hole body for the second protruding block to pass through.

In some embodiments, the top of the first connecting seat is provided with a first operating part extending outwards.

In some embodiments, a surface of the brush roll body is provided with first bristles.

In some embodiments, the first connector is detachably connected to the second connector at the output end of the driving device on the base, and as the cover plate is separated from the base, the end of the brush roll body near the first connector can be lifted upwards to separate the first connector from the second connector.

In some embodiments, a first circular truncated cone hole coaxial with the brush roll main body is formed in the first connecting head, the diameter of the first circular truncated cone hole is gradually reduced towards the direction far away from the second connecting head, a plurality of triangular inserting strips are uniformly distributed in the first circular truncated cone hole along the circumferential direction of the first circular truncated cone hole, the triangular inserting strips are arranged along the axial direction of the first circular truncated cone hole, one end point of each triangular inserting strip faces outwards, the other two end points of each triangular inserting strip face inwards, the first circular truncated cone hole can be matched with a second circular truncated cone on the second connecting head, and the triangular inserting strips can be matched with first inserting grooves in the circumferential direction of the second circular truncated cone in a one-to-one corresponding mode.

In some embodiments, the triangular insert is an isosceles triangle with the apex of the triangular insert facing outward.

The utility model has the beneficial effects that: when the brush roll component is installed, the first connecting head at one end of the brush roll main body is connected with the output end of the driving device on the base, the first connecting seat at the other end of the brush roll main body is positioned and placed in the first positioning groove on the base, then the cover plate is detachably connected on the base, the cover plate can lock the first connecting seat on the base, thereby completing the installation of the brush roller assembly, when the brush roller assembly is dismounted, the cover plate is taken down from the base, along with the separation of the cover plate and the base, the locking of the first connecting seat is released, the first connecting seat is taken out from the first positioning groove, simultaneously the first connecting seat is separated from the output end of the driving device on the base, thereby lift this brush roller subassembly off, convenient operation, swift is convenient for lift this brush roller subassembly off wash etc. labour saving and time saving, efficient, stability and reliability are high, can satisfy the increasingly high demand of user.

In addition, in the technical scheme of the utility model, the technical scheme can be realized by adopting the conventional means in the field unless being particularly described.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a detachable brush roller assembly according to an embodiment of the present invention.

Fig. 2 is a sectional view of an embodiment of the present invention at a first coupling seat.

FIG. 3 is a schematic diagram of the structure of the detachable brush roller assembly, the base and the cover plate according to an embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of a removable brush roller assembly, base and cover plate of one embodiment of the present invention.

FIG. 5 is a partial cross-sectional view of a removable brush roller assembly, base and cover plate of one embodiment of the present invention.

FIG. 6 is a schematic structural view illustrating a state in which the detachable brush roller assembly is detached from the chassis according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a second connecting head according to an embodiment of the present invention.

The reference numerals in the drawings indicate that the brush roll body 1, the first connecting head 11, the first circular truncated cone hole 111, the triangular insert 112, the first connecting seat 2, the first slider 21, the first through hole 211, the second bump 212, the first sliding chute 22, the elastic resetting mechanism 23, the first rotating shaft 231, the rotating rod 232, the third bump 2321, the first torsion spring 233, the first stopper 24, the first hole body 25, the second hole body 26, the first operating part 27, the base 3, the first positioning groove 31, the second connecting head 32, the second circular truncated cone 321, the first slot 322, the cover plate 4, the first bump 41 and the first brush 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating some embodiments of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", "bottom", "top", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "upper," "lower," "primary," "secondary," and the like are used for descriptive purposes only and may be used for purposes of simplicity in more clearly distinguishing between various components and not to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are used broadly and can be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected through the inside of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, a detachable brush roll assembly according to the present invention is schematically shown, which includes a brush roll body 1, a first connecting seat 2 is provided at one end of the brush roll body 1, the first connecting seat 2 is rotatably connected to one end of the brush roll body 1, a first connecting head 11 is provided at the other end of the brush roll body 1, the first connecting head 11 is detachably connected to an output end of a driving device provided on a base 3, a cover plate 4 engaged with the brush roll assembly and a first positioning groove 31 engaged with the first connecting seat 2 are provided on the base 3, the first connecting seat 2 can be positioned and placed by the first positioning groove 31, the cover plate 4 is detachably connected to the base 3, and the cover plate 4 can lock the first connecting seat 2 and shield the brush roll body 1. The first connecting seat 2 and the brush roll main body 1 can be axially fixed by a retaining ring, a nut, a shaft end screw and the like, and the first connecting seat 2 can also be provided with a bearing and the like matched with the brush roll main body 1.

When the brush roller component is installed, the first connecting head 11 at one end of the brush roller main body 1 is connected with the output end of the driving device on the base 3, the first connecting seat 2 at the other end of the brush roller main body 1 is positioned and placed in the first positioning groove 31 on the base 3, then the cover plate 4 is detachably connected to the base 3, the cover plate 4 enables the first connecting seat 2 to be locked on the base 3, thereby completing the installation of the brush roller assembly, when the brush roller assembly is disassembled, the cover plate 4 is removed from the base 3, the locking of the first coupling seat 2 is released as the cover plate 4 is separated from the base 3, the first coupling seat 2 is taken out from the first positioning groove 31, and the first connecting head 11 is separated from the output end of the driving means on the base 3, thereby discharging the brush roller assembly, the brush roller assembly is very convenient and quick to mount and dismount, and is convenient to dismount for cleaning and the like.

The first connecting seat 2 is provided with a first sliding block 21, a first sliding groove 22 matched with the first sliding block 21 and an elastic resetting mechanism 23, the cover plate 4 is provided with a first protruding block 41 matched with the first sliding block 21, the base 3 is provided with a clamping groove matched with the first sliding block 21, and the first sliding block 21 can normally linearly slide back and forth along the first sliding groove 22. When the cover plate 4 is connected with the base 3, the first protrusion 41 pushes the first slider 21 to slide along the first sliding groove 22, and the elastic resetting mechanism 23 is compressed, so that the corresponding part of the first slider 21 is inserted into the clamping groove on the base 3 for locking, and after the cover plate 4 is installed on the base 3, the brush roller assembly is locked on the base 3 at the same time, the elastic resetting mechanism 23 also has a reverse acting force on the first protrusion 41, and the cover plate 4 can be pressed on the top of the first connecting seat 2 by pressing, so that the cover plate 4 and the roller brush assembly are more stable, and similarly, as the cover plate 4 is separated from the base 3, the elastic resetting mechanism 23 can push the first slider 21 to automatically reset along the first sliding groove 22 by the elastic restoring force, so as to release the locking of the first slider 21 and the base 3, and then the brush roller assembly can be taken down And (4) reliability.

The elastic reset mechanism 23 includes a first rotating shaft 231, a rotating rod 232 and a first torsion spring 233, the rotating rod 232 and the first torsion spring 233 are respectively fixedly connected to the first rotating shaft 231, for example, a fixed connection member such as a pin or a key is used, so that the rotating rod 232 and the first torsion spring 233 rotate together with the first rotating shaft 231, the first connecting seat 2 is provided with a first stopper 24 matched with the first torsion spring 233, one torsion leg of the first torsion spring 233 can be pressed against the first stopper 24 and can also be fixedly connected to the first stopper 24, for example, welded connection or the like, the other torsion leg of the first torsion spring 233 can be suspended, the first slider 21 is provided with a first through hole 211 matched with the rotating rod 232, the rotating rod 232 passes through the first through hole 211, the first through hole 211 is generally trapezoidal, and the size of the bottom of the first through hole 211 is substantially equal to the diameter of the rotating rod 232. When apron 4 is connected with base 3, first lug 41 promotes rotary rod 232 and rotates, rotary rod 232 and first torsion spring 233 rotate with first pivot 231 together, rotary rod 232 rotates and promotes first slider 21 to slide again, make first slider 21 insert the draw-in groove on the base 3 and lock, a round foot of first torsion spring 233 cooperatees with first dog 24 simultaneously, make first torsion spring 233 twist reverse, and the same is said, along with apron 4 and base 3 separation, torsional first torsion spring 233 drives rotary rod 232 reverse rotation, make first slider 21 along first spout 22 automatic re-setting, moreover, the steam generator is simple in structure, it is compact, it is firm, and convenient for operation, it is more stable, and reliable. In addition, the first torsion spring 233 may be a spiral spring or other suitable mechanism in the prior art, and the elastic return mechanism 23 may be a spring directly acting on the first slider 21.

One end of the first slider 21 is provided with a second protrusion 212, the second protrusion 212 may be one or more than two, when the cover plate 4 is connected with the base 3, the first protrusion 41 pushes the rotating rod 232 to rotate, the rotating rod 232 and the first torsion spring 233 rotate together with the first rotating shaft 231, and the rotating rod 232 rotates to push the first slider 21 to slide, so that the second protrusion 212 is inserted into the slot on the base 3 to be locked. The upper end of the rotating rod 232 is provided with a third bump 2321 matched with the first bump 41, and the first bump 41 pushes the rotating rod 232 to rotate through the third bump 2321, so that the structure is more stable and reliable. The shapes, sizes, and the like of the first bump 41, the second bump 212, and the third bump 2321 are determined as the case may be.

The first sliding block 21, the first sliding groove 22 and the elastic reset mechanism 23 are arranged in the first connecting seat 2, the first hole body 25 for the first bump 41 to pass through and the second hole body 26 for the second bump 212 to pass through are arranged on the first connecting seat 2, the structure is more compact and stable, and the safety, the stability and the reliability are higher.

The top of the first coupling seat 2 is provided with a first operating part 27 protruding outward, and the assembly and disassembly of the brush roller assembly is facilitated by the first operating part 27. The base 3 can be provided with a groove body matched with the first operation part 27, the first operation part 27 can partially extend out of the groove body, and the first operation part 27 can also be tilted upwards to one end, and the like.

The surface of the brush roller body 1 is provided with first bristles 5, and the type, diameter, length, shape, distribution, number, etc. of the first bristles 5 are determined according to specific conditions. The brush bristles are usually required to be relatively soft and can be sleeves made of flexible materials arranged on the surface of the first rotating shaft 231, the sleeves can be made of sponge, foam or other suitable flexible materials in the prior art, and the sleeves are sleeved on the rotating shaft and are convenient to mount, dismount and replace and the like. When the brush is used for rolling and brushing carpets and blankets to be cleaned, the brush hair is generally required to be relatively hard, and the brush hair can be distributed at intervals in a spiral shape, a cluster shape, a linear type, a broken line type, an annular type and the like.

The first connector 11 is detachably connected to the second connector 32 at the output end of the driving device on the base 3, the driving device such as the motor, etc. can directly drive the second connector 32 to rotate, and the driving device such as the motor, etc. can also drive the second connector 32 to rotate through the synchronous belt mechanism, the gear mechanism, etc. When the brush roller assembly is dismounted, after the cover plate 4 is removed, one end of the brush roller body 1 close to the first connecting seat 2 can be lifted or lifted upwards, namely, one end of the brush roller body 1 can be lifted or lifted through the first connecting seat 2, and the first connecting seat 2 is taken out from the first positioning groove 31, so that the first connecting head 11 is separated from the second connecting head 32, the brush roller assembly is dismounted, and the operation is very convenient and rapid.

As shown in fig. 1 and 7, a first circular truncated cone hole 111 is formed in the first connecting head 11, the first circular truncated cone hole 111 and the brush roll main body 1 are coaxial, the diameter of the first circular truncated cone hole 111 gradually decreases towards a direction away from the second connecting head 32, a plurality of triangular insertion strips 112 are uniformly distributed in the first circular truncated cone hole 111 along the circumferential direction, the triangular insertion strips 112 are usually multiple, the triangular insertion strips 112 are arranged along the axial direction of the first circular truncated cone hole 111, one end point of each triangular insertion strip 112 faces outwards, the other two end points of each triangular insertion strip face inwards, a second circular truncated cone 321 capable of being matched with the first circular truncated cone hole 111 is arranged on the second connecting head 32, the first circular truncated cone hole 111 and the second circular truncated cone 321 are coaxial, first slots 322 capable of being matched with the triangular insertion strips 112 in a one-to-one correspondence manner are arranged in the circumferential direction of the second circular truncated cone 321, and the first connecting head 11 and the second connecting head 32 form a separable coupling structure. When one end of the brush roll main body 1 is lifted or lifted up through the first connecting seat 2, the first connecting seat 11 is automatically separated from the second connecting seat 32, so that the brush roll component is detached, the operation is more convenient and quicker, and the structure is simple, compact, stable and reliable. The triangular insert 112 is an isosceles triangle, and the vertex of the triangular insert 112 faces outwards, so that the triangular insert is more stable and reliable. Further, the first connector 11 and the second connector 32 may be universal joints or the like.

The cover plate 4 and the base 3 can be connected through elastic buckles, a first slide rod, a slide way matched with the first slide rod and a first elastic piece are arranged on the cover plate 4, the first elastic piece is usually a spring, one end of the first elastic piece is pressed on the first slide rod, the other end of the first elastic piece is pressed on a fixing block of the cover plate 4, a first clamping block is arranged at one end of the first slide rod, a clamping groove matched with the first clamping block is arranged on the base 3, and a avoiding hole matched with the first clamping block is formed in the cover plate 4. When apron 4 is connected with base 3, first slider 21 cooperatees with first connecting seat 2, and the draw-in groove on base 3 is inserted to the first fixture block of first slide bar, and first elastic component is compressed simultaneously to apron 4 is connected with base 3 elasticity buckle, and the operation is more convenient, swift, and is more stable, reliable. The first block moves horizontally to connect and disconnect with the slot on the base 3, and in addition, the first block can also move upwards or downwards to connect and disconnect with the slot on the base 3.

Compared with the prior art, the utility model has the advantages that: when the brush roller assembly is installed, the first connecting head 11 at one end of the brush roller body 1 is detachably connected with the second connecting head 32 at the output end of the driving device on the base 3, the first connecting seat 2 at the other end of the brush roller body 1 is positioned and placed in the first positioning groove 31 on the base 3, then the cover plate 4 is detachably connected on the base 3, the first lug 41 on the cover plate 4 pushes the rotating rod 232 to rotate, the rotating rod 232 and the first torsion spring 233 rotate together with the first rotating shaft 231, the rotating rod 232 rotates to push the first sliding block 21 to slide, so that the second lug 212 of the first sliding block 21 is inserted into the clamping groove on the base 3 to be locked, meanwhile, one torsion pin of the first torsion spring 233 is matched with the first stop 24 to make the first torsion spring 233 to be twisted, the cover plate 4 can make the first connecting seat 2 locked on the base 3, thereby completing the installation of the brush roller assembly, when the brush roller assembly is disassembled, the cover plate 4 is taken down from the base 3, along with the separation of the cover plate 4 and the base 3, the torsional first torsion spring 233 drives the rotating rod 232 to reversely rotate, so that the first sliding block 21 automatically resets along the first sliding groove 22, the second protruding block 212 of the first sliding block 21 exits from the clamping groove on the base 3, the locking of the first connecting seat 2 is released, one end of the brush roll main body 1 can be lifted or lifted through the first connecting seat 2, the first connecting seat 2 is taken out from the first positioning groove 31, so that the first connecting seat 11 is automatically separated from the second connecting seat 32, the brush roll component is detached, the operation is convenient and quick, the brush roll component is detached for cleaning and the like, time and labor are saved, the efficiency is high, the structure is simple, the compactness and the stability and the reliability are high, and the higher requirements of users can be met.

The above embodiments of the present invention are only for illustrating the technical solutions of the present invention, and not for limiting the same, it should be understood that modifications or substitutions for those skilled in the art can be made on the basis of the above description without departing from the inventive concept, and all such modifications and substitutions should fall within the protection scope of the appended claims. In this case all the details may be replaced with equivalent elements, and the materials, shapes and dimensions may be any.

Claims (10)

1. Can dismantle brush roller assembly, its characterized in that includes brush roller main part (1), the one end of brush roller main part (1) is provided with rather than rotating first connecting seat (2) of being connected, the other end of brush roller main part (1) is provided with first connecting head (11), first connecting seat (2) can cooperate with first constant head tank (31) on base (3), first connecting head (11) can with drive arrangement's on base (3) output separable the connection, along with apron (4) can dismantle the connection on base (3), apron (4) can make first connecting seat (2) locking be in on base (3).

2. The detachable brush roller assembly according to claim 1, wherein a first sliding block (21), a first sliding slot (22) matched with the first sliding block (21) and an elastic return mechanism (23) are arranged on the first connecting seat (2), a first protruding block (41) on the cover plate (4) can push the first sliding block (21) to slide along the first sliding slot (22) so that the first sliding block (21) can be inserted into a clamping slot on the base (3) for locking, and the elastic return mechanism (23) can push the first sliding block (21) to automatically return to release the locking of the first sliding block (21) and the base (3) as the cover plate (4) is separated from the base (3).

3. The detachable brush roll assembly according to claim 2, wherein the elastic return mechanism (23) comprises a first rotating shaft (231), a rotating rod (232) fixedly connected with the first rotating shaft (231) and a first torsion spring (233), the first connecting seat (2) is provided with a first stopper (24) matched with the first torsion spring (233), the first slider (21) is provided with a first through hole (211) matched with the rotating rod (232), the rotating rod (232) passes through the first through hole (211), the first protrusion (41) can push the rotating rod (232) to rotate, the rotating rod (232) can push the first slider (21) to slide so that the first slider (21) is inserted into a slot on the base (3) to be locked, and the first torsion spring (233) can be driven to rotate at the same time, the twisted first torsion spring (233) can drive the rotating rod (232) to rotate reversely so as to enable the first sliding block (21) to reset automatically.

4. A detachable brush roller assembly according to claim 3, characterized in that one end of the first slider (21) is provided with a second projection (212) for connecting with a slot on the base (3), and the upper end of the rotary rod (232) is provided with a third projection (2321) cooperating with the first projection (41).

5. A detachable brush roller assembly according to claim 4, characterized in that said first slider (21), said first runner (22) and said elastic return mechanism (23) are arranged inside said first connection seat (2), said first connection seat (2) being provided with a first hole body (25) for the passage of said first cam (41) and a second hole body (26) for the passage of said second cam (212).

6. Detachable brush roller assembly according to claim 1, characterized in that the top of the first connection socket (2) is provided with a first operating part (27) protruding outwards.

7. Detachable brush roll assembly according to claim 1, characterized in that the surface of the brush roll body (1) is provided with first bristles (5).

8. A detachable brushroll assembly, according to any one of claims 1 to 7, wherein said first connector (11) is detachably connected to a second connector (33) at the output of the drive means on the base (3), and as the cover plate (4) is detached from the base (3), the end of the brushroll body (1) adjacent to the first connector (2) can be lifted upwards to detach the first connector (11) from the second connector (32).

9. A detachable brush roll assembly according to claim 8, characterized in that the first connecting head (11) is provided with a first circular truncated cone aperture (111) coaxial with the brush roll body (1), the diameter of the first circular truncated cone hole (111) is gradually reduced towards the direction far away from the second connector (32), a plurality of triangular inserting strips (112) are uniformly distributed in the first circular platform hole (111) along the circumferential direction, the triangular inserting strip (112) is arranged along the axial direction of the first circular truncated cone hole (111), one end point of the triangular insert (112) faces outwards and the other two end points face inwards, the first round platform hole (111) can be matched with a second round platform (321) on the second connector (32), the triangular inserting strips (112) can be matched with the first inserting grooves (322) in the circumferential direction of the second round table (321) in a one-to-one corresponding mode.

10. A detachable brushroll assembly, according to claim 9, wherein the triangular insert (112) is an isosceles triangle, the apex of the triangular insert (112) facing outwards.

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