CN106436166A - Drum washing machine and inner barrel assembly thereof - Google Patents

Abstract

The invention discloses a drum washing machine and an inner cylinder assembly thereof. The inner cylinder assembly includes an inner cylinder and a lifting rib located inside the inner cylinder, the lifting rib includes a lifting rib body, and the lifting rib body is used One side connected to the inner cylinder is detachably engaged with the inner cylinder; the inner cylinder assembly also includes a stopper located inside the inner cylinder, and when the stopper is in the first position, it can prevent the The lifting rib body moves relative to the inner cylinder, and when the limiting member is in the second position, the lifting rib body can move to separate from the inner cylinder. The structural design of the inner cylinder component can effectively solve the problem that the lifting rib is not easy to install and disassemble.

Description

Drum washing machine and its inner drum assembly

technical field

The invention relates to the technical field of household appliances, and more specifically, to a drum washing machine and an inner cylinder assembly thereof.

Background technique

The lifting ribs of the drum washing machine can bring the clothes to a high place when the drum is rotating, forming up and down beatings, so as to achieve the purpose of washing the clothes.

At present, the lifting ribs are generally fixedly connected to the inner cylinder of the washing machine through buckles and screws. Specifically, first snap the buckle of the lifting rib into the installation hole of the inner cylinder, and then fix the lifting rib and the inner cylinder through screws from the outside of the inner cylinder. Installing in this way, the installation process is complicated, time-consuming and labor-intensive. Moreover, the screws are installed from the outer surface of the inner cylinder. When the lifting ribs need to be disassembled, the outer cylinder of the washing machine must be disassembled and the inner cylinder must be taken out to disassemble, which makes the removal of the lifting ribs more troublesome. However, there are many narrow spaces inside the lifting ribs, which are easy to hide dirt and cannot be cleaned during the washing process, which makes the lifting ribs easy to breed bacteria and pollute the washed clothes.

To sum up, how to effectively solve the problem that the lifting rib is difficult to install and disassemble is an urgent problem for those skilled in the art.

Contents of the invention

In view of this, the first object of the present invention is to provide an inner cylinder assembly, the structural design of which can effectively solve the problem that the lifting bars are difficult to install and disassemble. The second object of the present invention is to provide a A drum washing machine comprising the above-mentioned inner tub assembly.

In order to achieve the above-mentioned first object, the present invention provides the following technical solutions:

An inner cylinder assembly, comprising an inner cylinder and a lifting rib located inside the inner cylinder, the lifting rib includes a lifting rib body, and one side of the lifting rib body for connecting with the inner cylinder is connected to the inner cylinder The barrel is detachable and clamped;

The inner cylinder assembly also includes a limiting member located inside the inner cylinder, when the limiting member is in the first position, it can prevent the lifting rib body from moving relative to the inner cylinder, and the limiting member is in the first position In the second position, the lifting rib body can move to disengage from the inner tube.

Preferably, in the above-mentioned inner cylinder assembly, a side of the lifting rib body used to connect with the inner cylinder is provided with a plurality of buckles, and the inner cylinder is provided with a plurality of fittings that cooperate with the buckles. hole.

Preferably, in the above-mentioned inner cylinder assembly, the buckle is an L-shaped buckle, which includes a first wall fixedly connected to the lifting rib body and a second wall fixedly connected to the first wall, the first wall The second wall can be inserted into the installation hole and slide to fit with the outer wall of the inner cylinder.

Preferably, in the above-mentioned inner cylinder assembly, the lifting rib body is provided with a reinforcing rib, and the buckle is fixed on the reinforcing rib.

Preferably, in the above-mentioned inner cylinder assembly, the limiting member specifically includes an elastic sheet fixed on one of the lifting rib body and the inner cylinder, and a limiting protrusion fixed relative to the elastic sheet is fixed on The limit hole on the other of the lifting rib body and the inner cylinder, the first position is that the limit protrusion is inserted into the limit hole, and the second position is that the limit protrusion is inserted into the limit hole. out of the limit hole.

Preferably, in the above-mentioned inner cylinder assembly, one end of the elastic piece is fixed on the lifting rib body, and the limiting hole is located on the inner cylinder, and the elastic force of the elastic piece can make the limiting protrusion The protrusion is located in the position-limiting hole, and the position-limiting protrusion can be disengaged from the position-limiting hole by pulling the elastic piece away from the inner cylinder.

Preferably, the above-mentioned inner cylinder assembly further includes a dismounting driving part, the dismounting driving part includes a pulling part and a connection end fixedly connected with the pulling part, and the end of the elastic piece not connected with the lifting rib body The part is fixedly connected with the connecting end, and the limiting protrusion is fixed on the connecting end.

Preferably, in the above-mentioned inner cylinder assembly, the end of the elastic sheet that is not connected to the lifting rib body is fixedly connected to the connecting end in a clamping manner.

Preferably, in the above-mentioned inner tube assembly, the pulling member is specifically a pull ring or a pull tab, and pulling the pull ring or pull tab can move the elastic sheet in a direction away from the inner tube.

Preferably, in the above-mentioned inner cylinder assembly, an operation hole is opened at one end of the lifting rib body, so as to pull the pulling member through the operation hole.

Preferably, in the above-mentioned inner cylinder assembly, the top end surface of the limiting protrusion is a guiding inclined surface.

Preferably, in the above-mentioned inner cylinder assembly, the length direction of the elastic sheet is from the end of the elastic sheet connected to the lifting rib body to the other end of the elastic sheet, and the length direction of the elastic sheet It is arranged parallel to the length direction of the lifting rib body.

A drum washing machine, comprising the inner tub assembly described in any one of the above.

The inner cylinder assembly provided by the present invention includes an inner cylinder and lifting ribs, wherein the lifting ribs are located inside the inner cylinder. The lifting rib includes a lifting rib body, the side of the lifting rib body used for connecting with the inner cylinder is clamped with the inner cylinder, and the lifting rib body and the inner cylinder are detachably clamped. The inner cylinder assembly also includes a limiter located inside the inner cylinder. When the limiter is in the first position, it can prevent the body of the lifting rib from moving relative to the inner cylinder. When the limiter is in the second position, the body of the lifting rib can move to disengage. Inner barrel. That is, the limiter can be operated inside the inner cylinder, so that when the limiter is in the first position, the body of the lifting rib and the inner cylinder cannot move relatively. The connected lifting rib body and the inner cylinder realize the fixed connection of the two. When the limiting member is in the second position, the lifting rib body and the inner cylinder can move relatively, at this time, the lifting rib body and the inner cylinder that are engaged with each other can move relatively, and the lifting rib body can move relative to the inner cylinder until it is separated from the inner cylinder, That is, the body of the lifting rib can be moved until it is no longer engaged with the inner cylinder, that is, the body of the lifting rib can be disassembled from the inner cylinder.

When the inner cylinder assembly provided by the present invention is applied, the stopper can be operated from the inner side of the inner cylinder. When the lifting rib does not need to be disassembled, the limiter can be placed at the first position; when the lifting rib needs to be removed, the stopper can be placed at In the second position, move the body of the lifting rib and finally make it break away from the inner cylinder. It can be seen from the above that the operation of the limiting part is all inside the inner cylinder, so when disassembling and installing the lifting rib, there is no need to disassemble the inner cylinder first, and the disassembly and installation process is more convenient, saving time and effort, and it is easier to disassemble and install the lifting rib ribs.

In order to achieve the above-mentioned second object, the present invention also provides a drum washing machine, which includes any one of the above-mentioned inner drum assemblies. Since the above-mentioned inner cylinder assembly has the above-mentioned technical effects, the drum washing machine having the inner cylinder assembly should also have corresponding technical effects.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the lifting bar that the embodiment of the present invention provides;

Figure 2 is a partial enlarged view of area A in Figure 1;

Fig. 3 is the side view of the rib provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of the assembly of the disassembly driving part and the lifting rib body provided by the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of dismounting the driving part in Fig. 4;

Fig. 6 is a schematic diagram of the assembly of the disassembly driving part and the lifting rib body according to another embodiment of the present invention;

Fig. 7 is a structural schematic diagram of dismounting the driving part in Fig. 6;

Fig. 8 is a schematic structural diagram of an inner cylinder provided by an embodiment of the present invention;

Fig. 9 is a schematic diagram of the assembly of the lifting rib and the inner cylinder provided by the embodiment of the present invention.

In Figure 1-9:

1- buckle, 2-lift rib body, 3-reinforcing rib, 4-elastic piece, 5-operating hole, 6-limiting protrusion, 7-removal driving part, 7a-connecting end, 7b-pull part, 8 -inner cylinder, 8a-mounting hole, 8b-limiting hole.

detailed description

The first object of the present invention is to provide an inner cylinder assembly, the structural design of which can effectively solve the problem that the lifting bars are not easy to install and disassemble. The second object of the present invention is to provide a Component drum washing machine.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to FIGS. 1-9 , the inner cylinder assembly provided by the embodiment of the present invention includes an inner cylinder 8 and lifting ribs, wherein the lifting ribs are located inside the inner cylinder. The lifting rib includes a lifting rib body 2 , the side of the lifting rib body 2 for connecting with the inner cylinder 8 is clamped with the inner cylinder 8 , and the lifting rib body 2 and the inner cylinder 8 are detachably clamped. The inner cylinder assembly also includes a limiter located inside the inner cylinder 8. When the limiter is in the first position, it can prevent the lifting rib body 2 from moving relative to the inner cylinder 8. When the limiter is in the second position, the lifting rib body 2 It can be moved to break away from the inner cylinder 8 . That is, the limiter can be operated inside the inner cylinder 8, so that when the limiter is in the first position, the lifting rib body 2 and the inner cylinder 8 cannot move relative to each other. At this time, the lifting rib body 2 and the inner cylinder 8 cannot move relatively after being clamped , the lifting rib body 2 and the inner cylinder 8 which are engaged with each other cannot be disassembled, so as to realize the fixed connection of the two. When the stopper is in the second position, the lifting rib body 2 and the inner cylinder 8 can move relatively, at this time, the lifting rib body 2 and the inner cylinder 8 that are engaged with each other can move relatively, and the lifting rib body 2 can move relative to the inner cylinder 8. Move until it breaks away from the inner cylinder 8 , that is, the lifting rib body 2 can be moved to no longer engage with the inner cylinder 8 , that is, the lifting rib body 2 can be disassembled from the inner cylinder 8 .

When applying the inner cylinder assembly provided by the embodiment of the present invention, the stopper can be operated from the inner side of the inner cylinder 8, and the stopper can be placed in the first position when the lifting rib does not need to be disassembled; The positioning part is in the second position, and then the rib body 2 is moved to finally separate from the inner tube 8 . It can be seen from the above that the operation of the limiting part is all inside the inner cylinder 8, so when disassembling and installing the lifting rib, there is no need to disassemble the inner cylinder 8 first, and the disassembly and installation process is more convenient, saving time and effort, and easier to disassemble and install The lifting rib.

Specifically, a plurality of buckles 1 may be provided on the side of the lifting rib body 2 for connecting with the inner tube 8 , and at the same time, a plurality of mounting holes 8a for matching with the buckles 1 are provided on the inner tube 8 . Of course, it is also possible to set the installation hole 8a on the lifting rib body 2, and set the buckle 1 on the inner tube 8, which is not limited here.

Further, the buckle 1 can be an L-shaped buckle, which includes a first wall fixedly connected to the lifting rib body 2 and a second wall fixedly connected to the first wall, and there is a clip between the first wall and the second wall. corners to ensure that the connected first wall and second wall form an L-shaped buckle. The second wall can be inserted into the installation hole 8 a and slid to fit the outer wall of the inner cylinder 8 . That is, the second wall extends to the outside of the inner cylinder 8 through the installation hole 8a as a whole, and then slides the lifting rib body 2, and the second wall slides along with the lifting rib body 2 until the second wall is attached to the outer wall of the inner cylinder 8. At this time, the first The wall abuts against the edge of the mounting hole 8a, thus realizing the clamping connection between the L-shaped buckle and the mounting hole 8a. When it is necessary to disassemble the lifting rib, just slide the lifting rib body 2 in the opposite direction, and the second wall will slide along with the lifting rib body 2 until the second wall can pass through the installation hole 8a and return to the inside of the inner cylinder 8, thus realizing the L-shaped buckle And the removal of the mounting hole 8a.

Wherein, the installation hole 8a may be a rectangular hole, a square hole or a triangular hole, etc., which is not limited here.

Of course, the buckle 1 can also be in other forms, such as a Z-shaped buckle or a retractable buckle, which is not limited here.

In order to strengthen the strength of the lifting rib, the lifting rib body 2 may also be provided with a reinforcing rib 3 , and the buckle 1 may be fixed on the reinforcing rib 3 . Specifically, the lifting rib body 2 may be in the shape of a rounded triangular prism, and two sides of the lifting rib body 2 have side walls, and the other side is open. The reinforcing rib 3 is in the shape of a rounded triangle and is fixedly connected to both side walls of the lifting rib body 2 . The opening side of the lifting rib body 2 is clamped with the inner wall of the cylinder, and the buckle 1 is arranged on the side of the reinforcing rib 3 facing the opening. In addition, the buckle 1 , the lifting rib body 2 and the reinforcing rib 3 may be an integrated structure, which is not limited here.

In this embodiment, the limiting member specifically includes an elastic piece 4, a limiting protrusion 6 and a limiting hole 8b. Wherein, the elastic piece 4 is fixed on one of the rib body 2 and the inner tube 8, and the position-limiting protrusion 6 is relatively fixed to the elastic plate 4, where the position-limiting protrusion 6 can be directly fixed on the elastic plate 4, and the position-limiting The protrusion 6 can also be connected with the elastic piece 4 through other components, so as to realize the relative fixation between the position-limiting protrusion 6 and the elastic piece 4 . The limiting hole 8b is fixed on the other one of the rib body 2 and the inner tube 8 . The first position is that the limiting protrusion 6 is inserted into the limiting hole 8b, and the second position is that the limiting protrusion 6 is out of the limiting hole 8b.

That is, when the limiting member is in the first position, the limiting protrusion 6 is inserted into the limiting hole 8b. At this time, due to the restriction of the limiting protrusion 6 and the limiting hole 8b, the lifting rib body 2 and the inner cylinder 8 cannot move relative to each other. When the limiting member is in the second position, the limiting protrusion 6 is out of the limiting hole 8b, and the limiting protrusion 6 is not in the limiting hole 8b at this time, so the lifting rib body 2 and the inner cylinder 8 can move relatively.

Further, one end of the elastic sheet 4 is fixed on the rib body 2 , and the limiting hole 8 b is located on the inner tube 8 . In addition, the elastic force of the elastic piece 4 can make the position-limiting protrusion 6 locate in the position-limiting hole 8b, and pulling the elastic plate 4 away from the inner tube 8 can make the position-limiting protrusion 6 escape from the position-limiting hole 8b. When installing the lifting rib, you can pass the second wall of the buckle 1 through the installation hole 8a, and then slide the lifting rib body 2 until the second wall fits the outer wall of the inner cylinder 8 and the first wall touches the edge of the installation hole 8a , at this moment, the position-limiting protrusion 6 just slides to be opposite to the position-limiting hole 8b, and due to the elastic force of the elastic sheet 4, the position-limiting protrusion 6 is inserted into the position-limiting hole 8b. When it is necessary to disassemble the lifting rib, drive the elastic sheet 4 to move away from the inner cylinder 8. Of course, the end connected to the lifting rib body 2 does not move, and the limiting protrusion 6 breaks away from the limiting hole 8b after moving a set distance , then remove the lifting ribs.

Of course, in another embodiment, the elastic force of the elastic piece 4 can also make the position-limiting protrusion 6 break away from the position-limiting hole 8b, and a pressing piece is provided. When the pressing piece is pressed on the elastic piece 4, the position-limiting protrusion 6 is inserted. to the limiting hole 8b. When the pressing piece is not pressed against the elastic sheet 4, the elastic force of the elastic sheet 4 makes the position-limiting protrusion 6 break away from the position-limiting hole 8b.

In order to facilitate pulling the elastic sheet 4 away from the inner cylinder 8, the inner cylinder assembly may further include a dismounting driving part 7, the dismounting driving part 7 includes a pulling part 7b and a connecting end 7a, and the pulling part 7b and the connecting end 7a are fixedly connected. The end of the elastic sheet 4 that is not connected to the lifting rib body 2 is fixedly connected to the connecting end 7a, that is, one end of the elastic sheet 4 is fixedly connected to the lifting rib body 2, and the other end is fixedly connected to the connecting end 7a of the dismounting driver 7. And the limiting protrusion 6 is fixed on the connecting end 7 a, and the limiting protrusion 6 is located on the side of the connecting end 7 a facing the inner cylinder 8 . By directly pulling the pulling piece 7b in this way, the pulling piece 7b drives the movement of the connecting end 7a and the elastic piece 4, which is more convenient to operate. The pulling piece 7b can be arranged perpendicular to the elastic sheet 4, which saves more effort.

Further, the end of the elastic sheet 4 that is not connected to the rib body 2 is fixedly connected to the connecting end 7a by snap-fitting. Specifically, the connecting end 7a has a card slot, and the end of the elastic piece 4 is directly locked in the card slot. Of course, the elastic piece 4 and the connection end 7a can also be connected by screws, or have an integrated structure, which is not limited here.

Specifically, the pulling member 7b is specifically a pull ring or a pull tab, and pulling the pull ring or pull tab can move the elastic sheet 4 in a direction away from the inner tube 8 . The plane where the pull ring or the pull tab is located can be perpendicular to the elastic sheet 4 . When the pulling member 7b is a pull tab, the surface of the pull tab may have concave-convex patterns, so as to increase the coefficient of friction and facilitate pulling. Specifically, the concave-convex pattern may be a stripe pattern, which is not limited here.

In order to facilitate the operation, an operation hole 5 can also be opened at one end of the lifting rib body 2 , so that the pulling member 7 b can be pulled through the operation hole 5 . Specifically, the elastic piece 4 is arranged on the reinforcing rib 3 closest to the end of the lifting rib body 2 , and the elastic piece 4 is located on the side of the reinforcing rib 3 close to the end of the lifting rib body 2 .

Preferably, the length direction of the elastic sheet 4 is from the end connected to the lifting rib body 2 of the elastic sheet 4 to the other end of the elastic sheet 4, and the length direction of the elastic sheet 4 is arranged parallel to the length direction of the lifting rib body 2, That is, the length direction of the elastic piece 4 is parallel to the axial direction of the inner cylinder 8 . It is more convenient to pull the elastic sheet 4 in this way. Of course, the length direction of the elastic sheet 4 can also be perpendicular to the length direction of the rib body 2, which is not limited here.

The top surface of the limiting protrusion 6 can be a guiding inclined surface, that is, when the lifting rib is installed, the guiding inclined surface gradually increases along the sliding direction of the lifting rib body 2, so that the limiting protrusion 6 can slide into the limiting hole 8b more easily . Of course, the top end surface of the position-limiting protrusion 6 can also be a plane, which is not limited here. The limiting protrusion 6 can be cylindrical, and of course it can also be in other shapes, which are not limited here.

In the embodiment provided by the present invention, the material of the lifting rib may be PP (polypropylene, Polypropylene), or the material of the lifting rib may be a composite material of PP and CaCO3. The material of the removal driving member 7 can be metal or plastic material, such as PC (Polycarbonate, Polycarbonate), POM (Polyoxymethylene, Polyoxymethylene) or stainless steel. The material of the inner cylinder 8 can be stainless steel, such as 1Cr17 or 304 and the like.

Based on the inner cylinder assembly provided in the above embodiments, the present invention also provides a drum washing machine, which includes any one of the inner cylinder assemblies in the above embodiments. Since the drum washing machine adopts the inner tub assembly in the above embodiment, please refer to the above embodiment for the beneficial effect of the drum washing machine.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (13)

1. An inner tube assembly, comprising an inner tube (8) and a lifting rib positioned at the inner side of the inner tube (8), characterized in that, the lifting rib comprises a lifting rib body (2), and the lifting rib body ( 2) One side for connecting with the inner cylinder (8) is detachably engaged with the inner cylinder (8); The inner cylinder assembly also includes a limiter located inside the inner cylinder (8), and when the limiter is in the first position, it can prevent the rib body (2) from contacting the inner cylinder (8) Relatively moving, when the limiting member is in the second position, the lifting rib body (2) can move to break away from the inner cylinder (8). 2. The inner cylinder assembly according to claim 1, characterized in that, one side of the lifting rib body (2) for connecting with the inner cylinder (8) is provided with a plurality of buckles (1), The inner cylinder (8) is provided with a plurality of installation holes (8a) which are matched with the buckle (1). 3. The inner cylinder assembly according to claim 2, characterized in that, the buckle (1) is an L-shaped buckle, which includes a first wall fixedly connected to the rib body (2) and a first wall connected to the rib body (2). The first wall is fixedly connected to the second wall, and the second wall can be inserted into the installation hole (8a) and slide to fit the outer wall of the inner cylinder (8). 4. The inner cylinder assembly according to claim 2, characterized in that a reinforcement rib (3) is provided on the lifting rib body (2), and the buckle (1) is fixed on the reinforcement rib (3) superior. 5. The inner cylinder assembly according to any one of claims 1-4, characterized in that, the limiting member specifically includes a fixed rib body (2) and the inner cylinder (8) The elastic piece (4) on one, the stop protrusion (6) fixed relative to the elastic piece (4), is fixed on the other one of the lifting rib body (2) and the inner cylinder (8) The limit hole (8b) on the upper, the first position is that the limit protrusion (6) is inserted into the limit hole (8b), and the second position is that the limit protrusion (6) Get out of the limiting hole (8b). 6. The inner cylinder assembly according to claim 5, characterized in that, one end of the elastic piece (4) is fixed on the lifting rib body (2), and the limiting hole (8b) is located at the On the inner cylinder (8), the elastic force of the elastic piece (4) can make the position-limiting protrusion (6) located in the position-limiting hole (8b), and pull away from the inner cylinder (8) The elastic piece (4) can make the position-limiting protrusion (6) disengage from the position-limiting hole (8b). 7. The inner cylinder assembly according to claim 6, characterized in that, it further comprises a dismounting driving part (7), and the dismounting driving part (7) includes a pulling part (7b) and is fixed to the pulling part (7b) The connecting end (7a) of the connection, the end of the elastic piece (4) that is not connected with the lifting rib body (2) is fixedly connected with the connecting end (7a), and the limiting protrusion (6) fixed on the connecting end (7a). 8. The inner cylinder assembly according to claim 7, characterized in that, the end of the elastic piece (4) that is not connected to the lifting rib body (2) is engaged with the connecting end (7a) by clipping fixed connection. 9. The inner cylinder assembly according to claim 7, characterized in that, the pulling member (7b) is specifically a pull ring or a pull tab, and pulling the pull ring or pull tab can make the elastic piece (4) move toward Move away from the inner barrel (8). 10. The inner cylinder assembly according to any one of claims 7-9, characterized in that an operation hole (5) is provided at one end of the lifting rib body (2) to pass through the operation hole ( 5) Pull the puller (7b). 11. The inner cylinder assembly according to claim 5, characterized in that, the top end surface of the limiting protrusion (6) is a guiding inclined surface. 12. The inner cylinder assembly according to claim 5, characterized in that, from the end of the elastic piece (4) connected to the rib body (2) to the other end of the elastic piece (4) is the length direction of the elastic piece (4), and the length direction of the elastic piece (4) is arranged parallel to the length direction of the rib body (2). 13. A drum washing machine, characterized by comprising the inner tub assembly according to any one of claims 1-12.