An electric cleaner

Abstract

The utility model relates to cleaning tool technical field, concretely is a kind of electric cleaner, by the fixed drive part of one side in assembly cavity, the other side is provided with detachable positioning shaft part, and then the existing mode of fixed brush with through type rotating shaft is replaced, the freedom degree of one side of brush is limited by drive part, the freedom degree of the other side is limited by positioning shaft part, when working, drive part drives brush to rotate around positioning shaft part, when needing to disassemble brush, positioning shaft part is separated from the second end side of brush by the control lock shaft, the freedom degree of the second end side of brush can not be limited, and it can be taken out directly from the side of the open mouth of assembly cavity, therefore, the side wall formed by assembly cavity does not need to be opened, thereby simplifying the installation and disassembly process of brush, so that brush maintenance is simpler, effectively improve use experience.

Description

Technical Field

[0001] This application belongs to the field of cleaning tool technology, specifically an electric cleaner. Background Technology

[0002] Existing electric cleaners for cleaning generally include a main unit and a roller brush. The main unit has an assembly cavity in which the roller brush is assembled. A rotating shaft is fixedly installed through the assembly cavity. The main unit is also equipped with a drive component for driving the rotating shaft to rotate, thereby driving the roller brush. Especially for electric cleaners used to clean cooking equipment such as barbecue grills, they generally also include a handle connected to the main unit. During operation, the electric cleaner is held by the handle to scrub the cooking equipment. In order to enable the roller brush to be disassembled and maintained, the existing electric cleaners have a side wall of the assembly cavity that is detachable. When it is necessary to remove the roller brush, the assembly cavity is opened from the side by removing the aforementioned side wall, and the roller brush can be taken out laterally along the rotating shaft. Although this type of electric cleaner can remove the roller brush, the disassembly process is cumbersome, which is not conducive to daily operation and results in a poor user experience. Therefore, it is necessary to develop an electric cleaner that facilitates the disassembly of the roller brush. Utility Model Content

[0003] The purpose of this application is to overcome the problem that existing electric cleaners are not easy to disassemble the roller brush, and to provide an electric cleaner with an easy-to-disassemble roller brush to improve the user experience.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An electric cleaner includes a main unit, a roller brush, and a locking shaft. The main unit has an assembly cavity open on at least one side, the roller brush is mounted in the assembly cavity, a drive portion extending into the assembly cavity is formed on a first side of the main unit, and an assembly channel communicating with the assembly cavity is formed on a second side. The drive portion is detachably coupled to a first end of the roller brush, and the locking shaft is provided with a positioning shaft portion detachably passing through the assembly channel and coupled to a second end of the roller brush. The roller brush rotates relative to the positioning shaft portion in response to rotation of the drive portion.

[0006] Compared with the prior art, this application replaces the existing method of fixing the roller brush with a through-type rotating shaft by fixing a drive unit on one side of the assembly cavity and a detachable positioning shaft on the other side. In this method, the freedom of one side of the roller brush is limited by the drive unit and the freedom of the other side is limited by the positioning shaft. During operation, the drive unit drives the roller brush to rotate around the positioning shaft. When the roller brush needs to be disassembled, the positioning shaft is separated from the second end of the roller brush by operating the locking shaft. This allows the freedom of the second end of the roller brush to be unrestricted and can be directly removed from the open side of the assembly cavity. Therefore, it is not necessary to open one side wall of the assembly cavity, which simplifies the installation and disassembly process of the roller brush, makes the roller brush maintenance simpler, and effectively improves the user experience.

[0007] The following provides two assembly structures for roller brushes:

[0008] 1. The roller brush has a drive hole extending along its axis on one end and a shaft hole extending along its axis on the other end. The drive part is connected to the drive hole, and the positioning shaft part is rotatably engaged with the shaft hole. The roller brush has a shaft hole on one end and a drive hole on the other end. During assembly, the roller brush is adjusted so that the drive hole is aligned with the drive part and the shaft hole is aligned with the positioning shaft part. Although the roller brush needs to be installed in a directional manner, this type of roller brush has a simple structure, simple manufacturing process, and low cost.

[0009] Second, both ends of the roller brush are provided with drive holes extending along their axes. A shaft hole connects the roller brush between these drive holes on both sides. The drive unit is configured to engage with either drive hole, and the positioning shaft is configured to pass through the other drive hole and rotatably engage with the shaft hole. This arrangement of the drive unit and positioning shaft ensures the stability and reliability of the roller brush installation. Furthermore, since both sides of the roller brush are compatible with the drive unit and positioning shaft, the interchangeability of the roller brush installation is improved, eliminating the need for directional installation and increasing the freedom of roller brush installation.

[0010] Furthermore, the distance between the second end of the roller brush and the inner wall of the corresponding side of the assembly cavity is greater than the depth to which the driving part is inserted into the driving hole. This setting prevents the roller brush from getting stuck due to contact with the inner wall of the assembly cavity during disassembly, ensuring that the roller brush has sufficient axial movement space to detach from the driving part, thereby completing the disassembly.

[0011] Furthermore, the second side of the host is provided with a locking structure, and the locking shaft is provided with an attachment structure that is detachably engaged with the locking structure. In response to the engagement of the locking structure and the attachment structure, the positioning shaft is confined within the assembly channel. In response to the unlocking of the locking structure and the attachment structure, the positioning shaft can be separated from the roller brush and the assembly channel as the locking shaft moves along the axial direction of the roller brush away from the roller brush.

[0012] Furthermore, the locking structure includes a rotating groove formed on the inner surface of the assembly channel, and the attachment structure includes a rotating latch formed on the outer surface of the locking shaft. The rotating groove and the rotating latch engage or disengage in response to forward or reverse rotation after the positioning shaft is inserted into the assembly channel. This configuration uses a rotating groove and a rotating latch as locking and attachment structures, achieving locking or unlocking through forward and reverse rotation. Users can easily fix or disassemble the roller brush through simple rotation operations, offering high reliability and convenience.

[0013] Furthermore, the locking shaft is equipped with a control part connected to the outer end of the positioning shaft. The control part is at least partially placed in the assembly channel. The attachment structure is constructed on the periphery of the control part, and its end side is constructed with a handle extending outward. Placing the control part at least partially in the assembly channel can make the locking shaft and the main unit more integrated. The handle facilitates the operation of the rotation of the locking shaft.

[0014] Furthermore, it also includes a bushing, which includes a sleeve fitted around the outer periphery of the positioning shaft and a top edge extending radially from the end of the sleeve away from the roller brush. The assembly channel is configured with a protruding edge fitted around the outer periphery of the sleeve. The outer periphery of the positioning shaft is configured with a radially extending trigger portion. An elastic element acting between the main unit and the top edge is fitted around the outer periphery of the protruding edge. The top edge is pushed by the elastic force of the elastic element towards the side away from the roller brush, so that when the locking structure and the attachment structure are unlocked, the locking shaft is pushed out of the main unit through the trigger portion. The above configuration simplifies the roller brush disassembly process. When the locking shaft is unlocked, the sleeve will automatically eject the locking shaft through the trigger portion under the push of the elastic element.

[0015] Furthermore, the sleeve extends into the assembly cavity, maintaining a preset distance between the roller brush and the side wall of the assembly cavity to prevent the roller brush from contacting the side wall of the assembly cavity and avoid wear between components. At the same time, when the locking shaft is unlocked, the sleeve will be pushed away from the assembly cavity by the elastic element along with the bushing, ensuring that the roller brush is not stuck by the sleeve when it is disassembled.

[0016] Furthermore, the main unit includes a body, a second side plate, and a second cover. A first side plate is formed on one side of the body, and the second side plate is detachably attached to the other side of the body. The body, located between the first and second side plates, forms the assembly cavity. The second cover is detachably placed on the second side plate. The second side plate has a first assembly groove extending toward the second cover, and the first assembly groove has a first assembly hole communicating with the assembly cavity. The second cover has a second assembly groove extending toward the second side plate, and the second assembly groove has a second assembly hole communicating with the first assembly groove. The first and second assembly grooves together form the assembly channel. This split-type main unit facilitates the assembly of components, especially the installation of bushings and elastic elements.

[0017] Furthermore, the first side plate is equipped with a transmission mechanism that is connected to the drive unit, and the main body is equipped with a power device that is connected to the transmission mechanism. The power device and the transmission mechanism ensure the power output of the roller brush. Attached Figure Description

[0018] Figure 1 A 3D diagram of an electric cleaner;

[0019] Figure 2 This is a partial 3D view of an electric cleaner, with dashed lines indicating the perspective of the roller brush.

[0020] Figure 3 This is a structural diagram showing the disassembly of the roller brush in an electric cleaner, where the locking shaft is separated from the main unit.

[0021] Figure 4 This is a structural diagram showing the disassembly of the roller brush in an electric cleaner, where the locking shaft is inserted into the assembly channel of the main unit;

[0022] Figure 5 and Figure 6 An exploded view of an electric cleaner from different angles;

[0023] Figure 7 This is a schematic diagram of the power unit and transmission mechanism.

[0024] Figure 8 This is a cross-sectional view of an electric cleaner.

[0025] Figure 9 This is a cross-sectional view of the assembly channel when it is separated from the lock shaft. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] See Figures 1 to 9This embodiment provides an electric cleaner, including a main unit 1, a roller brush 2, and a locking shaft 3. The main unit 1 has an assembly cavity 100 with openings on the front and bottom sides. The roller brush 2 is mounted in the assembly cavity 100. A drive part 4 extending into the assembly cavity 100 is constructed on a first side 1a of the main unit 1, and an assembly channel 50 communicating with the assembly cavity 100 is constructed on a second side 1b. The drive part 4 is detachably coupled to the first end side 2a of the roller brush 2. The locking shaft 3 is provided with a positioning shaft part 31 that detachably passes through the assembly channel 50 and is coupled to the second end side 2b of the roller brush 2. The roller brush 2 rotates relative to the positioning shaft part 31 in response to the rotation of the drive part 4. As a specific embodiment, the roller brush 2 includes a central shaft core 23 and a plurality of cleaning parts 24 disposed on the surface of the shaft core 23. The cleaning parts 24 are preferably flexible bristles.

[0028] See Figures 2 to 6 , Figure 8 and Figure 9 In one specific embodiment, the host 1 includes a body 11, a second side plate 12, a second cover 14, and a first cover 15. A first side plate 13 is formed on one side of the body 11, and the second side plate 12 is detachably attached to the other side of the body 11. The body 11 is located between the first side plate 13 and the second side plate 12, forming the assembly cavity 100. The second cover 14 is detachably mounted on the second side plate 12. The second side plate 12 has a first assembly groove 121 extending toward the second cover 15. An assembly slot 121 has a first assembly hole 122 communicating with the assembly cavity 100. The second cover 14 has a second assembly slot 141 extending toward the second side plate 12. The second assembly slot 141 has a second assembly hole 142 communicating with the first assembly slot 121. The first assembly slot 121 and the second assembly slot 141 together form the assembly channel 50. The drive unit 4 passes through the first side plate 13 and extends into the assembly cavity 100. The positioning shaft 31 passes through the second assembly hole 142 and the first assembly hole 122 in sequence and extends into the assembly cavity 100. The above-mentioned split-type main unit 1 facilitates the assembly of components.

[0029] See Figure 7 and Figure 8 The first side plate 13 is equipped with a transmission mechanism 61 that is connected to the drive unit 4. The first cover 15 is detachably covered on the first side plate 13 to cover the transmission mechanism 61. The transmission mechanism 61 is preferably a gear transmission mechanism composed of multiple gear pairs. The main body 11 is equipped with a power device 62 that is connected to the transmission mechanism 61. The power device 62 is preferably a motor. The power device 62 and the transmission mechanism 61 ensure the power output of the roller brush 2.

[0030] The following are two assembly structures for the roller brush 2:

[0031] As a first type of assembly structure for the roller brush (not shown in the figure), one end of the roller brush has a drive hole extending along its axis, and the other end has a shaft hole extending along its axis. The drive part is connected to the drive hole, and the positioning shaft part is rotatably engaged with the shaft hole. The roller brush has a shaft hole on one end and a drive hole on the other end. During assembly, the roller brush is adjusted so that the drive hole is aligned with the drive part and the shaft hole is aligned with the positioning shaft part. Although the roller brush needs to be installed directionally, this type of roller brush has a simple structure, simple manufacturing process, and low cost.

[0032] As the second assembly structure for roller brush 2, see Figure 3 , Figure 4 and Figure 8 The roller brush 2 has drive holes 21 extending along its axis on both ends. A shaft hole 22 connects the roller brush 2 between the drive holes 21 on both sides. The drive unit 4 is configured to engage with either end's drive hole 21. This engagement means that after the drive unit 4 engages with the drive hole 21, it can drive the roller brush 2 to rotate through the drive hole 21. For example… Figure 5 The drive unit 4 and drive hole 21 shown are constructed as corresponding polygonal structures; the positioning shaft 31 is constructed to pass through another drive hole 21 and rotatably engage with the shaft hole 22, and the positioning shaft 31 is a cylindrical shaft. This arrangement of the drive unit 4 and positioning shaft 31 ensures the stability and reliability of the roller brush 2 installation. Furthermore, both sides of the roller brush 2 are adapted to the drive unit and positioning shaft, thus improving the interchangeability of the roller brush 2 installation, eliminating the need for directional installation of the roller brush 2, and increasing the freedom of installation.

[0033] See Figure 8 The distance between the second end side 2b of the roller brush 2 and the inner wall of the corresponding side of the assembly cavity 100 is greater than the depth of the drive part inserted into the drive hole 21. The above arrangement avoids the roller brush 2 from getting stuck due to contact with the inner wall of the assembly cavity 100 when it is disassembled, and ensures that the roller brush 2 has sufficient axial movement space to disengage from the drive part 4, thereby completing the disassembly.

[0034] See Figure 5 , Figure 6 and Figure 8The second side 1b of the host 1 is provided with a locking structure 16, and the locking shaft 3 is provided with an attachment structure 34 that is detachably engaged with the locking structure 16. In response to the engagement of the locking structure 16 and the attachment structure 34, the positioning shaft portion 31 is confined within the assembly channel 50. In response to the unlocking of the locking structure 16 and the attachment structure 34, the positioning shaft portion 31 can move away from the roller brush 2 along the axial direction of the roller brush 2 as the locking shaft 3 moves away from the roller brush 2, thus separating from the roller brush 2 and the assembly channel 50.

[0035] See figure Figure 5 , Figure 6 and Figure 8 The locking structure 16 includes a rotating slot 161 formed on the inner surface of the assembly channel 50, and the attachment structure 34 includes a rotating latch 341 formed on the outer surface of the locking shaft 3. The rotating slot 161 and the rotating latch 341 engage or disengage in response to forward or reverse rotation after the positioning shaft 31 is inserted into the assembly channel 50. This configuration uses the rotating slot 161 and the rotating latch 341 as the locking and attachment structures 34, achieving locking or unlocking through forward and reverse rotation. Users can easily fix or disassemble the roller brush 2 through simple rotation operations, offering high reliability and convenience. Figure 5 and Figure 6 As shown, the rotating slot 161 and the rotating buckle 341 are existing L-shaped bayonet and L-shaped slot. In a specific embodiment, when the locking shaft 3 is rotated in the forward direction, the rotating slot 161 engages with the rotating buckle 341 to achieve locking. When the locking shaft 3 is rotated in the reverse direction, the rotating slot 161 separates from the rotating buckle 341 to achieve unlocking.

[0036] See Figure 1 , Figure 2 , Figure 4 , Figure 8 and Figure 9 The locking shaft 3 is equipped with a control part 32 connected to the outer end of the positioning shaft part 31. The control part 32 is at least partially placed in the assembly channel 50. In this embodiment, the control part 32 is at least partially embedded in the second assembly groove 141. The locking structure 16 is constructed on the inner side wall of the second assembly groove 141. The attachment structure 34 is constructed on the periphery of the control part 32. Its end side is constructed with a handle 35 extending outward. The fact that the control part 32 is at least partially placed in the assembly channel 50 can make the locking shaft 3 and the main unit 1 more integrated. The handle 35 facilitates the rotation of the locking shaft 3.

[0037] See Figure 5 , Figure 6 , Figure 8 and Figure 9It also includes a bushing 7, which includes a sleeve 71 fitted around the outer periphery of the positioning shaft portion 31 and a top edge 72 extending radially from the end of the sleeve 71 away from the roller brush 2. The assembly channel 50 is configured with a protruding edge 51 fitted around the outer periphery of the sleeve 71. The outer periphery of the positioning shaft portion 31 is configured with a radially extending trigger portion 33. An elastic element 52 acting between the main unit 1 and the top edge 72 is fitted around the outer periphery of the protruding edge 51. The top edge 72 is pushed by the elastic element 52 towards the side away from the roller brush 2 to push the trigger portion 33, so that when the locking structure 16 and the attachment structure 34 are unlocked, the locking shaft 3 is pushed out of the main unit 1 by the trigger portion 33. The above configuration simplifies the disassembly process of the roller brush 2. When the locking shaft 3 is unlocked, the sleeve 71 will automatically pop out the locking shaft 3 by the trigger portion 33 under the push of the elastic element 52.

[0038] See Figure 8 The sleeve 71 extends into the assembly cavity 100, maintaining a preset distance between the roller brush 2 and the side wall of the assembly cavity 100 to prevent the roller brush 2 from contacting the side wall of the assembly cavity 100 and avoid wear between components. At the same time, when the locking shaft 3 is unlocked, the sleeve 71 will be pushed away from the assembly cavity 100 by the elastic element 52 along with the bushing 7, ensuring that the roller brush 2 is not stuck by the sleeve 71 when it is disassembled.

[0039] like Figure 8 As shown, in this embodiment, the bushing 7 is assembled in the first mounting groove 121, the protruding edge 51 is arranged around the first mounting hole 122, and the elastic element 52 is configured as a spring sleeved on the protruding edge 51. One end of the spring abuts against the second side plate 12, and the other end abuts against the top edge 72. When the locking structure 16 is engaged with the attachment mechanism, that is, when the locking shaft 3 is in the locked state, the operating part 32 is located in the second mounting groove 141, and the trigger part 33 extends into the first mounting groove through the second mounting hole 142. 121 pushes the top edge 72 to compress the elastic element 52, so that the sleeve 71 passes through the first assembly hole 122 and extends into the assembly cavity 100. When the locking structure 16 is unlocked from the attachment mechanism, that is, when the locking shaft 3 is in the unlocked state, the elastic element 52 pushes the top edge 72, so that the top edge 72 pushes the trigger part 33 outward, thereby driving the entire locking shaft 3 to move automatically in the axial direction away from the roller brush 2, so that the positioning shaft part 31 is disengaged from the roller brush 2, and the restriction of the second end side 2b degree of freedom of the roller brush 2 is released.

[0040] Compared with the prior art, this application replaces the existing method of fixing the roller brush with a through-type rotating shaft by fixing a drive unit 4 on one side of the assembly cavity 100 and a detachable positioning shaft 31 on the other side. In this method, the freedom of one side of the roller brush 2 is limited by the drive unit 4 and the freedom of the other side is limited by the positioning shaft 31. During operation, the drive unit 4 drives the roller brush 2 to rotate around the positioning shaft 31. When the roller brush 2 needs to be disassembled, the positioning shaft 31 is separated from the second end side 2b of the roller brush 2 by operating the locking shaft 3. This allows the freedom of the second end side 2b of the roller brush 2 to be unrestricted and can be directly taken out from the open side of the assembly cavity 100. Therefore, it is not necessary to open one side wall of the assembly cavity 100, thereby simplifying the installation and disassembly process of the roller brush 2, making the maintenance of the roller brush 2 simpler, and effectively improving the user experience.

[0041] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An electric cleaner, characterized in that, The assembly includes a main unit (1), a roller brush (2), and a locking shaft (3). The main unit (1) has an assembly cavity (100) with at least one open side. The roller brush (2) is mounted in the assembly cavity (100). The main unit (1) has a drive unit (4) extending into the assembly cavity (100) on a first side (1a) and an assembly channel (50) communicating with the assembly cavity (100) on a second side (1b). The drive unit (4) is detachably coupled to the first end side (2a) of the roller brush (2). The locking shaft (3) is provided with a positioning shaft (31) detachably passing through the assembly channel (50) and coupled to the second end side (2b) of the roller brush (2). The roller brush (2) rotates relative to the positioning shaft (31) in response to the rotation of the drive unit (4).

2. The electric cleaner according to claim 1, characterized in that, The roller brush (2) has a drive hole (21) extending along its axis on one end side and a shaft hole (22) extending along its axis on the other end side. The drive part (4) is connected to the drive hole (21) in a transmission manner, and the positioning shaft part (31) is rotatably engaged with the shaft hole (22).

3. The electric cleaner according to claim 1, characterized in that, The roller brush (2) has drive holes (21) extending along its axis on both ends. The roller brush (2) is connected to the drive holes (21) on both sides by a shaft hole (22). The drive part (4) is configured to drive and cooperate with any drive hole (21). The positioning shaft part (31) is configured to pass through the other drive hole (21) and rotate to cooperate with the shaft hole (22).

4. The electric cleaner according to claim 2 or 3, characterized in that, The distance between the second end side (2b) of the roller brush (2) and the inner wall of the corresponding side of the assembly cavity (100) is greater than the depth to which the drive part (4) is inserted into the drive hole (21).

5. The electric cleaner according to claim 1, characterized in that, The second side (1b) of the host (1) is provided with a locking structure (16), and the locking shaft (3) is provided with an attachment structure (34) that is detachably engaged with the locking structure (16). In response to the engagement of the locking structure (16) and the attachment structure (34), the positioning shaft (31) is confined within the assembly channel (50). In response to the unlocking of the locking structure (16) and the attachment structure (34), the positioning shaft (31) can be separated from the roller brush (2) and the assembly channel (50) as the locking shaft (3) moves along the axial direction of the roller brush (2) away from the roller brush (2).

6. The electric cleaner according to claim 5, characterized in that, The locking structure (16) includes a rotating slot (161) constructed on the inner edge of the assembly channel (50), and the attachment structure (34) includes a rotating latch (341) constructed on the outer edge of the locking shaft (3). The rotating slot (161) and the rotating latch (341) engage or disengage in response to forward and reverse rotation after the positioning shaft (31) is inserted into the assembly channel (50).

7. The electric cleaner according to claim 5, characterized in that, The locking shaft (3) is provided with a control part (32) connected to the outer end of the positioning shaft part (31). The control part (32) is at least partially placed in the assembly channel (50). The attachment structure (34) is constructed on the periphery of the control part (32), and its end side is constructed with a handle (35) extending outward.

8. The electric cleaner according to claim 5, characterized in that, It also includes a bushing (7), which includes a sleeve (71) fitted around the outer periphery of the positioning shaft (31) and a top edge (72) extending radially from the end of the sleeve (71) away from the roller brush (2). The assembly channel (50) is configured with a protruding edge (51) fitted around the outer periphery of the sleeve (71). The outer periphery of the positioning shaft (31) is configured with a radially extending trigger part (33). The outer periphery of the protruding edge (51) is fitted with an elastic element (52) acting between the host (1) and the top edge (72). The top edge (72) is pushed by the elastic element (52) towards the side away from the roller brush (2) to push the trigger part (33) so that when the locking structure (16) and the attachment structure (34) are unlocked, the locking shaft (3) is pushed out of the host (1) through the trigger part (33).

9. The electric cleaner according to claim 8, characterized in that, The sleeve (71) extends into the assembly cavity (100) to maintain a preset distance between the roller brush (2) and the side wall of the assembly cavity (100).

10. The electric cleaner according to claim 1 or 8, characterized in that, The host (1) includes a body (11), a second side plate (12), and a second cover (14). A first side plate (13) is formed on one side of the body (11), and the second side plate (12) is detachably attached to the other side of the body (11). The body (11) forms the assembly cavity (100) between the first side plate (13) and the second side plate (12). The second cover (14) is detachably mounted on the second side plate (12). The second side plate (12) is configured to face the first side plate (13). The second cover (14) extends a first assembly groove (121), the first assembly groove (121) has a first assembly hole (122) communicating with the assembly cavity (100), the second cover (14) has a second assembly groove (141) extending toward the second side plate (12), the second assembly groove (141) has a second assembly hole (142) communicating with the first assembly groove (121), the first assembly groove (121) and the second assembly groove (141) enclose to form the assembly channel (50).

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