Cleaning device

Abstract

The utility model discloses a cleaning device. The cleaning device comprises a body, a driving assembly and a cleaning part. Wherein a mounting groove is formed in the bottom of the main body. The first end of the driving assembly is connected to the side wall of the mounting groove, and the second end of the driving assembly is provided with a first position rotating to the outside of the mounting groove relative to the body and a second position rotating to the inside of the mounting groove relative to the body. The cleaning piece is detachably arranged on the periphery of the driving assembly in a sleeving mode and driven by the driving assembly to rotate around the axis of the cleaning piece. The cleaning device solves the problem that in the prior art, a cleaning piece of a cleaning device is difficult to replace.

Description

Technical Field

[0001] The present application relates to the technical field of floor cleaning, and in particular to a cleaning device. Background Art

[0002] Common cleaning devices include vacuum cleaners, mops and sweeping robots. Vacuum cleaners and mops require manual operation, while sweeping robots can automatically monitor the environment through internally set programs and automatically clean the floor.

[0003] The bottom of the sweeping robot is provided with a mounting groove, in which a driving motor is installed. The sweeping robot also includes a cleaning member, in which the driving motor is inserted and drives the cleaning member to rotate so that the cleaning member cleans the stains on the ground. After the cleaning device is used for a long time, the cleaning member wears out and needs to be replaced. However, since the cleaning member is sleeved on the outer periphery of the driving motor, when the cleaning member is disassembled, the driving motor needs to be removed together before the cleaning member can be replaced, which makes it difficult to replace the cleaning member and is time-consuming and laborious. Utility Model Content

[0004] The main purpose of the present application is to provide a cleaning device to at least solve the problem of difficulty in replacing cleaning parts of cleaning devices in the prior art.

[0005] According to one aspect of the present application, there is provided a cleaning device, comprising:

[0006] A main body, wherein a mounting groove is provided at the bottom of the main body;

[0007] A drive assembly, wherein a first end of the drive assembly is connected to a side wall of the mounting groove, and a second end of the drive assembly has a first position that is rotated relative to the main body to the outside of the mounting groove and a second position that is rotated relative to the main body to the inside of the mounting groove;

[0008] The cleaning member is detachably sleeved on the outer periphery of the driving assembly and rotates around its own axis under the drive of the driving assembly.

[0009] Further, the driving assembly includes a mounting portion and a driving portion, the mounting portion is connected to the side wall of the mounting groove, the driving portion is rotatably connected to the mounting portion, and the driving portion is disposed in the cleaning member;

[0010] The driving portion is rotatable relative to the mounting portion so that the driving component switches between the first position and the second position.

[0011] Furthermore, the mounting portion includes a mounting seat, the driving portion includes a rotating bracket and a driving member, the rotating bracket is rotatably connected to the mounting seat, and the driving member is connected to an end of the rotating bracket away from the mounting seat.

[0012] Furthermore, a rotating shaft is provided at one end of the rotating bracket close to the mounting seat, the mounting seat has a connecting section, and the rotating shaft is rotatably arranged on the connecting section.

[0013] Furthermore, a stop flange section is provided on a side of the connecting section away from the rotating bracket, the stop flange section is connected to a side wall of the mounting groove, and one end of the cleaning member abuts against the stop flange section.

[0014] Furthermore, the cleaning device further comprises a limiting structure, which is disposed between the mounting portion and the driving portion and is used to limit the driving assembly within the mounting groove.

[0015] Further, the limiting structure includes a first clamping portion and a second clamping portion, the first clamping portion is arranged on one of the mounting portion and the driving portion, and the second clamping portion is arranged on the other of the mounting portion and the driving portion, and the first clamping portion has a limited position that cooperates with the second clamping portion to limit the driving portion within the mounting groove.

[0016] Further, the first clamping portion includes a clamping protrusion, which is connected to the mounting portion, and the second clamping portion includes a stop block, which is arranged on the driving portion, and the stop block has an elastic clamping section and a limiting protrusion section that are connected to each other, the elastic clamping section is connected to the end of the driving portion close to the mounting portion, and the limiting protrusion section protrudes from the driving portion, and the limiting protrusion section is used to stop the clamping protrusion so that the elastic clamping section is limited on the clamping protrusion.

[0017] Further, the first clamping portion includes a clamping protrusion, which is arranged on the mounting portion, and the second clamping portion includes a clamping groove, which is arranged on the driving portion, and the clamping protrusion is inserted into the clamping groove to restrict the driving portion within the mounting groove.

[0018] Furthermore, the cleaning device further comprises a locking assembly, wherein the locking assembly is disposed in the mounting groove, and the locking assembly has a locking position for locking the cleaning member in the mounting groove and an unlocking position for releasing the cleaning member.

[0019] Compared with the prior art, the driving assembly in the cleaning device of the present application has a first position that can be rotated to the outside of the mounting groove and a second position that can be rotated to the inside of the mounting groove, and the cleaning member is detachably mounted on the outer periphery of the driving assembly, which means that when the driving assembly is rotated to the first position, the cleaning member can be removed from the driving assembly without having to remove the entire driving assembly from the main body of the cleaning device and then remove the cleaning member from the driving assembly, thereby greatly improving the replacement efficiency of the cleaning member. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the cleaning device disclosed in the present application at a first viewing angle;

[0022] Figure 2 It is a structural schematic diagram of the cleaning device disclosed in this application at a second viewing angle;

[0023] Figure 3 It is a partial structural schematic diagram of the cleaning device disclosed in the present application at a second viewing angle (with the drum body and the drum mop removed);

[0024] Figure 4 It is a schematic structural diagram of the driving assembly disclosed in the present application from a third viewing angle;

[0025] Figure 5 It is a structural schematic diagram of the driving assembly disclosed in the present application at a fourth viewing angle;

[0026] Figure 6 This is a schematic diagram of the structure of the cleaning component disclosed in this application.

[0027] The above drawings include the following reference numerals:

[0028] 10. Main body; 11. Mounting groove; 20. Driving assembly; 21. Driving part; 22. Mounting part; 30. Cleaning member; 31. Drum main body; 32. Drum mop; 33. End connector; 40. Limiting structure; 41. First clamping part; 42. Second clamping part; 50. Locking assembly; 211. Rotating bracket; 212. Driving member; 221. Mounting seat; 411. Clamping convexity; 421. Stop block; 4211. Elastic clamping section; 4212. Limiting convex section; 2111. Rotating shaft; 2121. Motor main body; 2122. Output shaft; 2211. Connecting section; 2212. Stop flange section. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0032] See also Figures 1 to 6 As shown, according to an embodiment of the present application, a cleaning device is provided, including a main body 10 , a driving assembly 20 and a cleaning member 30 .

[0033] The main body 10 is provided with a mounting groove 11 at the bottom. The first end of the driving assembly 20 is connected to the side wall of the mounting groove 11, and the second end of the driving assembly 20 has a first position that is rotated relative to the main body 10 to the outside of the mounting groove 11 and a second position that is rotated relative to the main body 10 to the inside of the mounting groove 11. The cleaning member 30 is detachably sleeved on the outer periphery of the driving assembly 20, and rotates around its own axis under the drive of the driving assembly 20.

[0034] Specifically, when it is necessary to replace the cleaning member 30 on the cleaning device, firstly, an external force is applied to the driving assembly 20 to switch the second end of the driving assembly 20 from the second position to the first position. At this time, the second end of the driving assembly 20 and the cleaning member 30 are both located outside the mounting groove 11. The cleaning member 30 is then removed from the driving assembly 20, and then a new cleaning member 30 is mounted on the driving assembly 20. Then, an external force is applied to the driving assembly 20 again to switch the driving assembly 20 from the second position to the first position, thereby completing the replacement process of the cleaning member 30 of the cleaning device.

[0035] Compared with the prior art, the driving assembly 20 in the cleaning device of this embodiment has a first position that can be rotated to the outside of the mounting groove 11 and a second position that can be rotated to the inside of the mounting groove 11, and the cleaning member 30 is detachably mounted on the outer periphery of the driving assembly 20, which means that when the driving assembly 20 is rotated to the first position, the cleaning member 30 can be removed from the driving assembly 20 without having to remove the entire driving assembly 20 from the main body 10 of the cleaning device and then remove the cleaning member 30 from the driving assembly 20, thereby greatly improving the replacement efficiency of the cleaning member 30.

[0036] In this embodiment, the cleaning device may be, for example, a cleaning robot, and the cleaning member 30 is composed of a roller body 31 and a roller mop 32 assembly, wherein the roller body 31 is sleeved on the outer periphery of the driving assembly 20, and the roller mop 32 is sleeved on the roller body 31. In addition, a clamping structure (not shown in the figure) is also provided on the roller body 31, and the clamping structure is used to clamp the roller body 31 on the driving assembly 20, so as to prevent the roller body 31 and the driving assembly 20 from rotating relative to each other when the driving assembly 20 rotates.

[0037] Further, the driving assembly 20 includes a mounting portion 22 and a driving portion 21, wherein the mounting portion 22 is connected to the side wall of the mounting groove 11, and the driving portion 21 is rotatably connected to the mounting portion 22, and the driving portion 21 is disposed in the cleaning member 30. The driving portion 21 can rotate relative to the mounting portion 22 to switch the driving assembly 20 between the first position and the second position.

[0038] Specifically, the driving assembly 20 is connected to the side wall of the mounting groove 11 through the mounting portion 22, and the driving portion 21 of the driving assembly 20 can rotate relative to the mounting portion 22 in a direction close to or away from the mounting groove 11, so that the driving assembly 20 can switch between the first position and the second position. When the driving portion 21 rotates in a direction away from the mounting groove 11 and the driving portion 21 rotates to the outside of the mounting groove 11, the cleaning member 30 can be removed from the driving assembly 20 alone, without having to remove the entire driving assembly 20 to remove the cleaning member 30.

[0039] As attached Figure 3As shown, the mounting portion 22 includes a mounting seat 221 , and the driving portion 21 includes a rotating bracket 211 and a driving member 212 . The rotating bracket 211 is rotatably connected to the mounting seat 221 , and the driving member 212 is connected to one end of the rotating bracket 211 away from the mounting seat 221 .

[0040] In this embodiment, the driving member 212 includes a motor body 2121 and an output shaft 2122, the output shaft 2122 is disposed on the motor body 2121 and extends along the axis direction of the cleaning member 30. The rotating bracket 211 is disposed at one end of the motor body 2121 away from the output shaft 2122, and the rotating bracket 211 can drive the motor body 2121 to rotate together when rotating, so that the motor body 2121 rotates to the outside of the installation groove 11 or the motor body 2121 rotates from the outside of the installation groove 11 to the inside of the installation groove 11. The output shaft 2122 of the motor body 2121 can drive the cleaning member 30 to rotate, so that the cleaning member 30 can clean the floor.

[0041] Furthermore, a rotating shaft 2111 is disposed at one end of the rotating bracket 211 close to the mounting seat 221 , and the mounting seat 221 has a connecting section 2211 , and the rotating shaft 2111 is rotatably disposed on the connecting section 2211 .

[0042] Specifically, a first through hole is formed at one end of the connecting section 2211 close to the rotating bracket 211, and two outer edge sections are provided at one end of the rotating bracket 211 close to the mounting seat 221, and a rotating shaft 2111 is passed through the two outer edge sections. When the rotating bracket 211 and the connecting section 2211 are assembled, the rotating shaft 2111 passes through one outer edge section, the first through hole, and another outer edge section in sequence, and the rotating shaft 2111 rotates in the first through hole, so that the rotating bracket 211 can rotate around the rotating shaft 2111, so that when the rotating bracket 211 rotates, the driving member 212 can move to the outside of the mounting groove 11.

[0043] Furthermore, a stop flange section 2212 is provided on one side of the connecting section 2211 away from the rotating bracket 211 . The stop flange section 2212 is connected to the side wall of the mounting groove 11 , and one end of the cleaning member 30 abuts against the stop flange section 2212 .

[0044] Specifically, the stop flange section 2212 is used to stop the cleaning member 30, so as to prevent the cleaning member 30 from sliding along its own axial direction under the action of external force and abutting against the side wall of the mounting groove 11 after the cleaning member 30 is sleeved on the outer periphery of the driving assembly 20, so that the cleaning member 30 interferes with the side wall of the mounting groove 11. In addition, in this embodiment, the stop flange section 2212 is arranged on the mounting seat 221. When the rotating bracket 211 rotates relative to the mounting seat 221, if the rotation angle is large, the cleaning member 30 may interfere with the stop flange section 2212, causing damage to the cleaning member 30. Therefore, when it is necessary to disassemble the cleaning member 30, the rotating bracket 211 is first rotated in a direction away from the mounting groove 11 by a small amplitude, for example, the rotation angle can be 5° or 10°, and then a part of the cleaning member 30 is slid along its own axial direction, so that the cleaning member 30 is only sleeved on the outer periphery of the driving member 212, but not on the outer periphery of the mounting seat 221. Then, the driving part 21 is rotated to the outside of the installation groove 11, and the cleaning member 30 can be removed. Of course, the stop flange section 2212 can also be arranged on the rotating bracket 211, so as to avoid interference between the cleaning member 30 and the stop flange section 2212 when the rotating bracket 211 rotates.

[0045] In order to prevent the external force exerted on the cleaning device by the outside world from causing the driving assembly 20 to shake in the installation groove 11 when the cleaning device is working, thereby affecting the cleaning effect of the cleaning device on the ground, in this embodiment, the cleaning device further includes a limiting structure 40, which is arranged between the mounting portion 22 and the driving portion 21 and is used to limit the driving assembly 20 in the installation groove 11.

[0046] Specifically, when the driving assembly 20 rotates to the first position, the limiting structure 40 can exert a certain supporting force on the driving assembly 20 and limit the driving assembly 20 in the installation groove 11. When the external force exerted on the driving assembly 20 is greater than the supporting force exerted on the driving assembly 20 by the limiting structure 40, and the two forces are in opposite directions, the driving assembly 20 breaks free from the restraint of the limiting structure 40 under the action of the external force, and the driving assembly 20 can rotate to the second position under the action of the external force.

[0047] Furthermore, the limiting structure 40 includes a first clamping portion 41 and a second clamping portion 42, the first clamping portion 41 is arranged on one of the mounting portion 22 and the driving portion 21, and the second clamping portion 42 is arranged on the other of the mounting portion 22 and the driving portion 21, and the first clamping portion 41 cooperates with the second clamping portion 42 to limit the driving portion 21 to a limited position within the mounting groove 11.

[0048] Specifically, when the driving part 21 rotates into the mounting groove 11, the first clamping part 41 cooperates with the second clamping part 42 to restrict the driving part 21 within the mounting groove 11. When the driving part 21 is subjected to a large rotational force, the first clamping part 41 separates from the second clamping part 42. At this time, the driving part 21 is no longer affected by the first clamping part 41 and the second clamping part 42. Therefore, the driving part 21 can rotate to the outside of the mounting groove 11 under the action of external force.

[0049] As attached Figure 3 To Attachment Figure 5 As shown, in a specific embodiment, the first clamping portion 41 includes a clamping protrusion 411, which is connected to the mounting portion 22, and the second clamping portion 42 includes a stop block 421, which is arranged on the driving portion 21, and the stop block 421 has an elastic clamping section 4211 and a limiting protrusion section 4212 that are connected to each other, the elastic clamping section 4211 is connected to the end of the driving portion 21 close to the mounting portion 22, and the limiting protrusion section 4212 protrudes from the driving portion 21, and the limiting protrusion section 4212 is used to stop the clamping protrusion 411 so that the elastic clamping section 4211 is limited on the clamping protrusion 411.

[0050] Specifically, when the driving part 21 moves into the mounting groove 11 under the action of external force, the elastic clamping section 4211 on the driving part 21 is deformed under the action of the external force and the clamping protrusion 411, and then the elastic clamping section 4211 passes through the clamping protrusion 411 and is located between the clamping protrusion 411 and the mounting part 22. At this time, one end of the clamping protrusion 411 abuts against the limiting protrusion section 4212 to limit the driving component 20. When the driving component 20 is subjected to an external force, and the external force is small, the clamping protrusion 411 applies a pressing force to the elastic clamping section 4211, thereby limiting the driving part 21 to the mounting part 22. When the driving component 20 needs to be operated to rotate to the outside of the mounting groove 11, that is, a large external force is applied to the driving part 21, at this time, the elastic clamping section 4211 is elastically deformed and passes through the clamping protrusion 411, and the clamping protrusion 411 no longer applies a limiting effect on the driving part 21, so that the driving part 21 can be rotated to the outside of the mounting groove 11. In this embodiment, the elastic engaging section 4211 includes a rubber strip.

[0051] In another specific embodiment, the first clamping portion 41 includes a clamping protrusion 411, which is arranged on the mounting portion 22, and the second clamping portion 42 includes a clamping slot, which is arranged on the driving portion 21, and the clamping protrusion 411 is inserted into the clamping slot to restrict the driving portion 21 in the mounting groove 11.

[0052] Specifically, the clamping protrusion 411 has a third position inserted in the clamping slot and a fourth position separated from the clamping slot under the action of an external force. When the driving part 21 rotates into the mounting groove 11, the clamping protrusion 411 is inserted into the clamping slot, so that the driving part 21 is limited in the mounting groove 11. When the cleaning member 30 needs to be replaced, the clamping protrusion 411 is moved to the fourth position to separate the clamping protrusion 411 from the clamping slot, and then the driving part 21 can be rotated out of the mounting groove 11, and then the cleaning member 30 can be removed for replacement.

[0053] Furthermore, the cleaning device further comprises a locking assembly 50 , which is disposed in the mounting groove 11 , and has a locking position for locking the cleaning member 30 in the mounting groove 11 and an unlocking position for releasing the cleaning member 30 .

[0054] Specifically, the cleaning member 30 is composed of a roller body 31 and a roller mop 32 assembly, an end connector 33 is provided at one end of the roller body 31 away from the driving part 21 in the axial direction, and the locking assembly 50 is provided on a side relative to the mounting seat 221. When the driving assembly 20 is limited in the mounting groove 11, the end connector 33 is locked in the mounting groove 11 by the locking assembly 50, thereby preventing the cleaning member 30 from shaking in the mounting groove 11. When the cleaning member 30 needs to be replaced, the locking assembly 50 is moved to the unlocking position so that the cleaning member 30 and the driving assembly 20 can be rotated to the second position. In this embodiment, the locking assembly 50 can be a lock buckle.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0057] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cleaning device, characterized in that: include: A main body (10), wherein a mounting groove (11) is provided at the bottom of the main body (10); A driving assembly (20), wherein a first end of the driving assembly (20) is connected to a side wall of the mounting groove (11), a second end of the driving assembly (20) has a first position that is rotated relative to the main body (10) to the outside of the mounting groove (11) and a second position that is rotated relative to the main body (10) to the inside of the mounting groove (11), and the driving assembly comprises a mounting portion (22) and a driving portion (21); A cleaning member (30), the cleaning member (30) being detachably sleeved on the outer periphery of the driving assembly (20) and being driven by the driving assembly (20) to rotate around its own axis; a locking assembly (50), the locking assembly (50) being arranged in the installation groove (11), the locking assembly (50) having a locking position for locking the cleaning member (30) in the installation groove (11) and an unlocking position for releasing the cleaning member (30); A limiting structure (40), wherein the limiting structure (40) is arranged between the mounting portion (22) and the driving portion (21), and is used to limit the driving component (20) within the mounting groove (11).

2. The cleaning device according to claim 1, characterized in that The mounting portion (22) is connected to the side wall of the mounting groove (11), the driving portion (21) is rotatably connected to the mounting portion (22), and the driving portion (21) is disposed inside the cleaning member (30); The driving portion (21) is rotatable relative to the mounting portion (22) so that the driving component (20) switches between the first position and the second position.

3. The cleaning device according to claim 1, characterized in that: The mounting portion (22) comprises a mounting seat (221), and the driving portion (21) comprises a rotating bracket (211) and a driving member (212), wherein the rotating bracket (211) is rotatably connected to the mounting seat (221), and the driving member (212) is connected to an end of the rotating bracket (211) away from the mounting seat (221).

4. The cleaning device according to claim 3, characterized in that: A rotating shaft (2111) is provided at one end of the rotating bracket (211) close to the mounting seat (221); the mounting seat (221) has a connecting section (2211); and the rotating shaft (2111) is rotatably disposed on the connecting section (2211).

5. The cleaning device according to claim 4, characterized in that: A stop flange section (2212) is provided on a side of the connecting section (2211) away from the rotating bracket (211); the stop flange section (2212) is connected to a side wall of the mounting groove (11); and one end of the cleaning member (30) abuts against the stop flange section (2212).

6. The cleaning device according to claim 1, characterized in that: The limiting structure (40) comprises a first clamping portion (41) and a second clamping portion (42), wherein the first clamping portion (41) is arranged on one of the mounting portion (22) and the driving portion (21), and the second clamping portion (42) is arranged on the other of the mounting portion (22) and the driving portion (21), and the first clamping portion (41) has a limited position that cooperates with the second clamping portion (42) to limit the driving portion (21) to a limited position within the mounting groove (11).

7. The cleaning device according to claim 6, characterized in that: The first clamping portion (41) comprises a clamping protrusion (411), and the clamping protrusion (411) is connected to the mounting portion (22); the second clamping portion (42) comprises a stop block (421), and the stop block (421) is arranged on the driving portion (21); the stop block (421) has an elastic clamping section (4211) and a limiting protrusion section (4212) which are connected to each other; the elastic clamping section (4211) is connected to the end of the driving portion (21) close to the mounting portion (22); the limiting protrusion section (4212) protrudes from the driving portion (21); the limiting protrusion section (4212) is used to stop the clamping protrusion (411) so that the elastic clamping section (4211) is limited on the clamping protrusion (411).

8. The cleaning device according to claim 6, characterized in that The first clamping portion (41) comprises a clamping protrusion (411), and the clamping protrusion (411) is arranged on the mounting portion (22); the second clamping portion (42) comprises a clamping slot, and the clamping slot is arranged on the driving portion (21), and the clamping protrusion (411) is inserted into the clamping slot to restrict the driving portion (21) within the mounting groove (11).

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