WO2021219097A1

WO2021219097A1 - Roller brush clamping device and roller brush

Info

Publication number: WO2021219097A1
Application number: PCT/CN2021/091127
Authority: WO
Inventors: 潘雨松; 徐康; 胜间隆
Original assignee: 杭州泰歌工具有限公司
Priority date: 2020-04-29
Filing date: 2021-04-29
Publication date: 2021-11-04
Also published as: CN212105008U

Abstract

Provided are a roller brush clamping device and a roller brush, which relate to the technical field of clamping tools. The roller brush clamping device comprises a support, a first clamping assembly and a second clamping assembly, wherein the support comprises a base cylinder with two ends being in communication with each other; the first clamping assembly comprises a driving adjustment cylinder connected in the base cylinder in a threaded manner, and a first clamping arm fixedly connected to the driving adjustment cylinder; and the second clamping assembly comprises a driven adjustment arm that is slidably snap-fitted to the base cylinder and is connected in the driving adjustment cylinder in a threaded manner, and a second clamping arm fixedly connected to the driven adjustment arm. Threads on the base cylinder, the driving adjustment cylinder and the driven adjustment arm are screwed in the same direction, and the pitch of the threads on the driven adjustment arm is twice the pitch of the threads on the base cylinder. The roller brush comprises a brush head and the roller brush clamping device, wherein the brush head is pivoted between the first clamping arm and the second clamping arm of the roller brush clamping device. When the roller brush clamping device is used, the mounting and dismounting convenience of the brush head is high, and the brush head can be kept centered during clamping.

Description

Roller brush clamping device and roller brush

Cross-references to related applications

This disclosure claims the priority of the Chinese patent application named "roller brush clamping device and roller brush" filed with the Chinese Patent Office on April 29, 2020, with application number 202020695096.9, the entire content of which is incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the technical field of clamping tools, in particular to a roller brush clamping device and a roller brush.

Background technique

At present, the decoration of homes, workshops or shopping malls needs to paint the walls or floors. The painting generally uses roller brushes. The existing roller brushes are generally formed by bending a steel shaft. The brush head is inserted on the steel shaft and placed on the steel shaft. The end of the brush head is locked with a nut to prevent the brush head from falling off. When installing or removing the brush head, the nut needs to be disassembled and assembled. The cumbersome operation leads to inconvenient disassembly and assembly of the brush head, and it is difficult to ensure the centering of the brush head after installation. , Causing the roller brush to easily shift when used.

That is, the brush head of the existing roller brush is inconvenient to disassemble and assemble, and it is difficult to ensure the centering degree of the brush head installation.

Summary of the invention

In order to solve the technical problems known in the art, the present disclosure aims to provide a roller brush clamping device and a roller brush, for example, a technology that can solve the inconvenience in disassembly and assembly of the brush head of the roller brush, and the installation of the brush head is difficult to ensure the centrality of the technology problem.

The embodiment provides a roller brush clamping device, which includes a bracket, a first clamping assembly and a second clamping assembly. A first clamping arm connected to the first end of the active adjustment barrel, and the second end of the active adjustment barrel is screwed into the base barrel;

The second clamping assembly includes a driven adjusting arm and a second clamping arm fixedly connected to the first end of the driven adjusting arm, and the second end of the driven adjusting arm is slidably clamped along its axial direction On the base barrel and threadedly connected to the active adjustment barrel; the screw directions on the base barrel, the active adjustment barrel and the driven adjustment arm are all the same, and the threads on the driven adjustment arm The pitch is twice the pitch of the thread on the base cylinder.

In an alternative embodiment, the cylinder section corresponding to the base cylinder and the active adjustment cylinder is an active section, and the active section is equipped with a first locking member, and the first locking member is used to lock the Actively adjust the position of the barrel screwed into the base barrel.

In an alternative embodiment, the first locking member includes a locking cylinder, the inner wall of the locking cylinder is provided with a locking groove, and the locking groove extends along the circumferential direction of the locking cylinder, and The depth of the groove gradually increases; the outer wall of the active section is provided with a locking boss, the locking boss is provided with a guiding slope, and the inclination direction of the guiding slope is the same as the inclination direction of the groove bottom of the locking groove Consistent

The locking cylinder is sleeved on the active section, the locking boss corresponds to the locking groove, and during the rotation of the locking cylinder, the locking boss is received in a natural state. The deep groove section of the locking groove or the locking boss abuts the active adjusting cylinder inwardly under the squeeze of the groove bottom of the shallow groove section of the locking groove.

In an alternative embodiment, the outer wall of the active adjustment cylinder is provided with a card slot, the card slot corresponds to the locking boss, and the locking boss receives the shallow groove of the corresponding locking groove. When the bottom of the segment groove is squeezed, the card groove can be inserted inward.

In an alternative embodiment, there are multiple locking grooves, the multiple locking grooves are arranged at intervals along the circumferential direction of the locking cylinder, and the groove depths of the multiple locking grooves change directions Consistent; there are multiple locking bosses, a one-to-one correspondence between the locking bosses and the locking grooves, and the locking bosses include a first locking boss and a first Two locking bosses, the height of the first locking boss is greater than the height of the second locking boss; the slot corresponds to the first locking boss.

In an alternative embodiment, along the axial direction of the base cylinder, a limit platform is provided on one side of the locking boss, and the other side of the locking boss is threadedly connected to the limit cylinder. When the position cylinder rotates toward the locking boss, the locking cylinder can be sandwiched between the limit cylinder and the limit platform.

In an alternative embodiment, the limiting platform extends along the circumferential direction of the base cylinder, and the limiting platform is provided with a limiting notch, and the end of the locking cylinder protrudes outward from the limiting head, The limit head extends into the limit gap, and along the circumferential direction of the base cylinder, one end of the limit gap corresponds to the locking position of the locking cylinder, and the other end of the limit gap Corresponding to the unlocking position of the locking cylinder.

In an alternative embodiment, the outer wall of the base cylinder is provided with a lock mark and an unlock mark, the lock mark corresponds to one end of the limit notch indicating that it is locked, and the unlock mark corresponds to the limit notch indicating The unlocked end corresponds to it.

In an alternative embodiment, the active adjustment cylinder is provided with an installation limit mark.

In an alternative embodiment, a reinforcing rib is provided at the connection between the active adjustment barrel and the first clamping arm;

And/or, a reinforcing rib is provided at the connection between the driven adjusting arm and the second clamping arm.

In an alternative embodiment, the first locking member includes a first threaded barrel, and the outer end of the first threaded barrel is provided with a first pressing barrel turned inward along its circumference; The axial direction includes an active thread section and an active guide section in sequence from the inside to the outside, and the outer wall of the active guide section is in a narrowing shape from the inside to the outside along the axial direction, and the active thread section is threadedly connected to the first threaded barrel And/or, the barrel section corresponding to the base cylinder and the driven adjusting arm is a driven section, the driven section is detachably connected with a second locking member, and the second locking member includes A second threaded barrel, the outer end of the second threaded barrel is provided with a second pressing barrel turned inward along its axial direction; the driven section includes a driven threaded section and The driven guide section, and the outer wall of the driven guide section is narrowed from the inside to the outside along the axial direction, and the driven threaded section is threadedly connected in the second threaded barrel.

In an optional embodiment, at least one of the first clamping arm and the second clamping arm is provided with a hollow groove that is in a "U" shape and opens toward the base cylinder, and An elastic arm is formed in the hollow groove, and the elastic arm is provided with a plug connector for pivotally connecting one end of the brush head;

Or, at least one of the first clamping arm and the second clamping arm is provided with a mounting opening, and a rotating arm is hinged in the mounting opening, and the rotating arm is provided with a device for pivotally connecting the brush head Plug connector

Or, at least one of the first clamping arm and the second clamping arm is detachably fixedly connected with a plug for pivotally connecting the brush head.

In an alternative embodiment, the active guide section is provided with a plurality of active adjustment grooves at intervals along its circumferential direction, the active adjustment grooves extend along the axial direction of the active guide section, and the active adjustment groove is outside End opening setting;

And/or, the driven guide section is provided with a plurality of driven adjustment grooves at intervals along its circumference, and the plurality of driven adjustment grooves all extend along the axial direction of the driven guide section, and the driven guide section The outer end of the adjusting groove is opened.

In an alternative embodiment, the diameter of the inner cylinder of the driven guide section corresponds to the outer diameter of the driven adjustment arm.

In an optional embodiment, the bracket further includes a mounting seat fixed to the outer wall of the base tube, and the mounting seat is used for mounting a handle.

In an alternative embodiment, of the inner wall of the base cylinder and the outer wall of the driven adjusting arm, one is provided with a clamping boss, and the other is provided with a clamping groove along its axial direction, The clamping boss is slidably clamped in the clamping groove.

In an optional embodiment, the roller brush clamping device further includes a first brush head end cover and a second brush head end cover, wherein the first brush head end cover is configured to be detachable through a first trocar. Ground is connected to the first clamping arm (220) and is capable of rotating around the central axis of the first trocar. The second brush head end cap is configured to be detachably connected to the first trocar. The second clamping arm (320) can rotate around the central axis of the second trocar.

In an alternative embodiment, the first trocar and the second trocar each include: a first end, a second end, a first section, and a second section,

The first end, the first section, the second section, and the second end are configured to be sequentially connected and integrally formed, or can be combined in sequence to form the first trocar or the Said the second set of needles,

The first end, the second end, the first section, and the second section are cylindrical,

The radial dimension of the first end portion is greater than the radial dimension of the first section, and the radial dimension of the first section is smaller than or equal to the radial dimension of the second section.

In an alternative embodiment, a threaded portion is provided at the second end, and corresponding first threaded holes are provided on the first clamping arm (220) and the second clamping arm (310) to The second end is threadedly connected to the corresponding first threaded hole.

In an alternative embodiment, the first brush head end cover and the second brush head end cover each include: a base, a first extension, and a second extension,

The base includes an annular member, and the annular member includes a central hollow area concentric with the annular member;

The first extension portion includes a first cylindrical member configured to extend from the periphery of the hollow area in a direction perpendicular to the plane where the base is located;

The second extension portion includes a second cylindrical member configured to extend from the periphery of the ring member in a direction perpendicular to the plane where the base is located.

In an alternative embodiment, the first cylindrical member includes an elastically deformable structure, and the elastically deformable structure is disposed on an end of the first cylindrical member away from the base,

The elastically deformable structure includes an urban tooth-like structure having at least one tooth portion arranged along the circumferential direction of the first cylindrical member, and at least one tooth portion of the urban tooth-like structure is capable of being subjected to a forced force. Deforms toward a direction away from the axis of the central axis of the first cylindrical member,

The tooth portion is provided with a protruding portion protruding inward in the radial direction of the ring member.

In an alternative embodiment, the radial size of the first end portion is larger than the radial size of the annular opening surrounded by the protruding portions in the state where the lenticular structure is not subjected to forced force; and The radial size of the annular opening can be increased to be equal to or greater than the radial size of the first end when the lenticular structure is forced.

In an alternative embodiment, the protruding length of the protrusion is less than or equal to the radial dimensions of the first section and the second section in the roller brush clamping device according to claim 11 One-half of the difference.

In an optional embodiment, it further includes a threaded knob, a second threaded hole is provided in the middle of the base barrel (110), and the threaded knob is configured to be connected to the base through the second threaded hole. The barrel (110), and abuts against the outer surface of the active adjustment barrel (210) contained in the interior of the base barrel (110) for fixing the active adjustment barrel (210).

An embodiment also provides a roller brush, comprising a brush head and the aforementioned roller brush clamping device, the brush head is pivotally connected between the first clamping arm and the second clamping arm of the roller brush clamping device.

The embodiment also provides a brush head end cover applied to the aforementioned roller brush clamping device, characterized in that the brush head end cover is configured to be detachably connected to the first clamping arm (220) through a trocar Or the second clamping arm (310) can rotate around the central axis of the trocar.

In an alternative embodiment, the brush head end cover includes: a base, a first extension, and a second extension,

The embodiment also provides a trocar, which is applied to the aforementioned roller brush clamping device, the trocar includes: a first end, a second end, a first section, and a second section,

The first end, the first section, the second section, and the second end are configured to be sequentially connected and integrally formed, or can be combined in sequence to form the trocar,

The second end is provided with a threaded portion for threaded connection with a corresponding threaded hole provided on the first clamping arm or the second clamping arm;

The cross-sectional radial dimension of the first end portion is greater than the cross-sectional radial dimension of the first section, and the radial cross-sectional dimension of the first section is less than or equal to the radial cross-sectional dimension of the second section.

The roller brush clamping device and the beneficial effects of the roller brush of the present disclosure include:

The roller brush clamping device and roller brush provided by the present disclosure, wherein the roller brush clamping device includes a bracket as an installation and adjustment base, a first clamping assembly for jointly clamping and fixing the brush head of the roller brush, and The second clamping assembly, the active adjustment cylinder of the first clamping assembly is screwed into the base cylinder of the bracket, and the driven adjustment arm of the second clamping assembly is screwed into the active adjustment cylinder, and the active adjustment cylinder rotates one turn every time , The movement direction of the driven adjusting arm and the base cylinder relative to the active adjusting cylinder is the same, and the distance of the driven adjusting arm relative to the active adjusting cylinder is twice the distance of the bracket relative to the active adjusting cylinder; wherein, the roller brush includes the roller brush holder described above The holding device and the brush head pivotally clamped between the first clamping assembly and the second clamping assembly.

Initially, the active adjusting barrel of the first clamping assembly is threadedly connected to the base barrel of the bracket, the driven adjusting arm of the second holding assembly is threadedly connected to the active adjusting barrel, and the driven adjusting arm slides along its circumferential direction. Attached to the base cylinder, the thread on the inner wall of the base cylinder is set as the first thread, and the thread on the outer wall of the active adjustment cylinder is the second thread. The thread on the inner wall of the adjusting barrel is the third thread, and the thread on the outer wall of the driven adjusting arm is the fourth thread. The direction of rotation of the first thread, the second thread, the third thread and the fourth thread are all the same, and the pitch of the first thread is P1 It is equal to the pitch P2 of the second thread, and the pitch P3 of the third thread is equal to the pitch P4 of the fourth thread, P4=2*P1.

By rotating the active adjustment cylinder, the distance between the first clamping arm and the second clamping arm can be adjusted, and the clamping state of the brush heads between the two can be adjusted accordingly. Specifically, the adjustment can be made based on the bracket ( It can also be adjusted on the basis of the active adjusting cylinder or the driven adjusting arm, and the relative movement of the three remains unchanged), each time the active adjusting cylinder is turned in the first direction, the active adjusting cylinder rotates toward the base cylinder along its axial direction. The movement distance P1 in the direction (also the direction toward the driven adjusting arm); at the same time, the driven adjusting arm is relatively actively adjusted toward the direction of the active adjusting barrel under the rotational driving effect of the active adjusting barrel and the axial limit of the base barrel The cylinder movement distance is P4, then the movement distance of the driven adjusting arm relative to the base cylinder toward the active adjusting cylinder P4-P1=P1, that is, every time the active adjusting cylinder rotates in the first direction, the active adjusting cylinder and the driven adjusting arm move towards each other in the same direction At distance P1, place the brush head between the first clamping arm and the second clamping arm, and continuously rotate the active adjusting cylinder in the first direction, then the first clamping arm and the second clamping arm move toward each other at equal distances until The active adjusting cylinder rotates a certain number of turns, the first clamping arm corresponds to the second clamping arm and clamps the brush head, completing the clamping installation of the brush head. Similarly, when you need to remove the brush head for cleaning or replacement, you only need to rotate the active adjustment barrel in a second direction opposite to the first direction. The active adjustment barrel and the driven adjustment arm can achieve equal distance back movement. The clamping arm and the second clamping arm are correspondingly separated from the clamping of the brush head to complete the disassembly of the brush head.

When the roller brush holding device is used, the brush head can be disassembled and assembled only by rotating the active adjusting cylinder, which is more convenient for disassembly and assembly; in addition, during the adjustment process, the active adjusting cylinder and the driven adjusting arm are both equidistant When the brush head is moved toward or away from each other, the brush head can be kept in the center when the brush head is clamped, thereby reducing the occurrence of the deviation of the brush head from one side and affecting the accuracy of the roller brush, thereby improving the convenience of using the roller brush.

Description of the drawings

In order to more clearly describe the technical solutions in the specific embodiments of the present disclosure, the following will briefly introduce the drawings that need to be used in the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic structural diagram of a roller brush clamping device provided by an embodiment of the present disclosure when it is in a first form, in which the first clamping assembly and the second clamping assembly are in a retracted state;

2 is a schematic structural diagram of the roller brush clamping device provided by the embodiment of the present disclosure provided by the embodiment of the present disclosure when it is in the first form, in which the first clamping assembly and the second clamping assembly are in an extended state;

Figure 3 is a radial cross-sectional view of the locking cylinder, the base cylinder and the active adjustment cylinder in Figure 2 when matched;

Figure 4 is an axial cross-sectional view of the roller brush clamping device in Figure 2;

Fig. 5 is an exploded schematic diagram of the roller brush clamping device in Fig. 1;

Fig. 6 is a schematic diagram of the structure of the bracket in Fig. 1;

Fig. 7 is an exploded schematic diagram of the first clamping assembly in Fig. 1;

FIG. 8 is a schematic structural diagram when the roller brush clamping device provided by the embodiment of the disclosure is in the second form; FIG.

9 is a schematic cross-sectional view of the roller brush clamping device in FIG. 8;

Fig. 10 is an exploded schematic diagram of the roller brush clamping device in Fig. 8;

11 is a schematic diagram of the structure of the bracket in the roller brush clamping device of FIG. 8;

Fig. 12 is a schematic structural diagram of a first clamping assembly in the roller brush clamping device of Fig. 8;

Fig. 13 is a schematic structural diagram of a second clamping assembly in the roller brush clamping device of Fig. 8;

14 is a schematic diagram of the first elastic arm in the roller brush clamping device of FIG. 8 when a mounting hole is provided;

Fig. 15 is a schematic cross-sectional view of a plug-in fitting installed on the first elastic arm in Fig. 14;

Fig. 16 is a schematic structural diagram of a trocar provided by an embodiment of the disclosure;

Figure 17 is a schematic structural diagram of a brush head end cover provided by an embodiment of the disclosure;

18 is a schematic cross-sectional view of a brush head end cover provided by an embodiment of the disclosure;

Figures 19-25 are perspective views and cross-sectional views of various components during the installation process of the brush head end cover provided by the embodiments of the disclosure;

FIG. 26 is a partial structural diagram of a roller brush clamping device provided by an embodiment of the disclosure.

Icon: 100-bracket; 110-base tube; 111-clamping boss; 112-active thread section; 113-active guide section; 114-active adjustment groove; 115-driven thread section; 116-driven guide section; 117-driven adjusting groove; 118-first thread; 120-first locking member; 121-first threaded barrel; 122-first compression barrel; 123-locking barrel; 124-locking groove; 125- Limiting head; 130-second locking member; 131-second threaded barrel; 132-second compression barrel; 140-mounting seat; 200-first clamping assembly; 210-active adjustment barrel; 211-second Thread; 212-third thread; 213-slot; 220-first clamping arm; 221-first plug connector; 222-first hollow groove; 223-first elastic arm; 224-mounting port; 225-rotation Arm; 226-plug; 227-clamping joint; 228-locking groove; 229-mounting hole; 300-second clamping assembly; 310-driven adjusting arm; 311-clamping groove; 312-fourth thread; 320-second clamping arm; 321-second plug connector; 322-second hollow groove; 323-second elastic arm; 410-first locking boss; 420-second locking boss; 430-guide Slope; 440-limiting platform; 441-limiting gap; 450-limiting cylinder; 461-locking mark; 462-unlocking mark; 463-positioning mark; 470-penetrating seam; 480-installing limit slot; 490 -Reinforcing ribs; first trocar 500; first end 501; first section 502; second section 503; second end 504; nut 505; first brush head end cover 600; base 601; An extension 602; a second extension 603; a tooth 6021; a connecting portion 604; a receiving portion 605; a protrusion 701; a first threaded hole 801; a second threaded hole 901; a threaded knob 902.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments These are a part of the embodiments of the present disclosure, but not all of the embodiments. The components of the embodiments of the present disclosure generally described and illustrated in the drawings herein may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed present disclosure, but merely represents selected embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once a certain item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

In the description of the present disclosure, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the figures shown in the drawings. The position or positional relationship of the product, or the position or positional relationship usually placed when the disclosed product is used, is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific position, It is constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present disclosure. In addition, the terms "first", "second", "third", "fourth", etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

In addition, terms such as "horizontal" and "vertical" do not mean that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present disclosure, it should also be noted that, unless otherwise clearly defined and defined, the terms “setup”, “installation”, “connected”, and “connected” should be interpreted broadly. For example, they may be fixed connections. It can also be detachably connected or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

This embodiment provides a roller brush clamping device, as shown in Figure 1, Figure 2, Figure 4, Figure 8 and Figure 9, comprising a bracket 100, a first clamping assembly 200 and a second clamping assembly 300, the bracket 100 The first clamping assembly 200 includes an active adjustment barrel 210 and a first clamping arm 220 fixed to the first end of the active adjustment barrel 210. The second end of the active adjustment barrel 210 is threadedly connected. In the base cylinder 110; the second clamping assembly 300 includes a driven adjusting arm 310 and a second clamping arm 320 fixed to the first end of the driven adjusting arm 310, and the second end of the driven adjusting arm 310 extends along its The base cylinder 110 is slidably clamped to the base cylinder 110, and is screwed into the active adjusting cylinder 210; the screw directions on the base cylinder 110, the active adjusting cylinder 210 and the driven adjusting arm 310 are all the same, and the driven adjusting arm 310 is threaded The pitch of is twice the pitch of the thread on the base cylinder 110.

This embodiment also provides a roller brush, which includes a brush head and the aforementioned roller brush clamping device. The brush head is pivotally connected between the first clamping arm 220 and the second clamping arm 320 of the roller brush clamping device.

In the roller brush clamping device and roller brush provided in this embodiment, the roller brush clamping device includes a bracket 100 serving as an installation and adjustment base, and a first clamp for jointly clamping and fixing the brush head of the roller brush. The assembly 200 and the second clamping assembly 300, the active adjustment barrel 210 of the first clamping assembly 200 is threadedly connected to the base barrel 110 of the bracket 100, and the driven adjustment arm 310 of the second clamping assembly 300 is threadedly connected to the active adjustment barrel 210, and every time the active adjusting cylinder 210 rotates, the driven adjusting arm 310 and the base cylinder 110 move in the same direction relative to the active adjusting cylinder 210, and the moving distance of the driven adjusting arm 310 relative to the active adjusting cylinder 210 is relative to the bracket 100 The active adjustment barrel 210 is twice as long as the movement distance; wherein, the roller brush includes the aforementioned roller brush clamping device and a brush head pivotally clamped between the first clamping assembly 200 and the second clamping assembly 300.

Initially, the active adjustment barrel 210 of the first clamping assembly 200 is screwed into the base barrel 110 of the bracket 100, and the driven adjustment arm 310 of the second clamping assembly 300 is screwed into the active adjustment barrel 210, and the driven adjustment The arm 310 is slidably clamped to the base cylinder 110 along its circumferential direction. Among the threads that cooperate with each other among the base cylinder 110, the active adjustment cylinder 210 and the driven adjustment arm 310, the thread on the inner wall of the base cylinder 110 is set as the first thread 118, the thread on the outer wall of the active adjustment barrel 210 is the second thread 211, the thread on the inner wall of the active adjustment barrel 210 is the third thread 212, the thread on the outer wall of the driven adjustment arm 310 is the fourth thread 312, the first thread 118, the second thread 211, the rotation directions of the third thread 212 and the fourth thread 312 are the same, and the pitch P1 of the first thread 118 is equal to the pitch P2 of the second thread 211, the pitch P3 of the third thread 212 and the pitch P4 of the fourth thread 312 are equal Equal, P4=2*P1.

By rotating the active adjustment cylinder 210, the distance between the first clamping arm 220 and the second clamping arm 320 can be adjusted, and the clamping state of the brush heads between the two can be adjusted accordingly. Specifically, when adjusting, the bracket 100 can be used as The reference is adjusted (it can also be adjusted based on the active adjusting cylinder 210 or the driven adjusting arm 310, the relative movement of the three remains unchanged), every time the active adjusting cylinder 210 is rotated in the first direction, the active adjusting cylinder 210 rotates. At the same time, the movement distance P1 along its axial direction toward the base cylinder 110 (also the direction toward the driven adjusting arm 310); at the same time, the driven adjusting arm 310 has a rotational driving effect on the active adjusting cylinder 210 and the axial limit of the base cylinder 110. Under the action of the position, the direction toward the active adjusting cylinder 210 moves relative to the active adjusting cylinder 210 by a distance P4, and the driven adjusting arm 310 moves relative to the base cylinder 110 toward the active adjusting cylinder 210 by a distance P4-P1=P1, that is, every time it faces the first direction Rotate the active adjustment barrel 210 once, the active adjustment barrel 210 and the driven adjustment arm 310 move towards each other for the same distance P1, and the brush head is placed between the first clamping arm 220 and the second clamping arm 320, continuously facing the first direction Rotate the active adjusting cylinder 210, the first clamping arm 220 and the second clamping arm 320 move toward each other at equal distances until the active adjusting cylinder 210 rotates a certain number of turns, and the first clamping arm 220 corresponds to the second clamping arm 320 And clamp the brush head to complete the clamping installation of the brush head. Similarly, when the brush head needs to be removed for cleaning or replacement, it is only necessary to rotate the active adjustment barrel 210 in a second direction opposite to the first direction, and the active adjustment barrel 210 and the driven adjustment arm 310 can realize equidistant back movement. , The first clamping arm 220 and the second clamping arm 320 are correspondingly separated from the clamping of the brush head, and the disassembly of the brush head is completed.

When the roller brush clamping device is used, the brush head can be disassembled and assembled only by rotating the active adjustment cylinder 210, which is more convenient for disassembly and assembly; in addition, during the adjustment process, the active adjustment cylinder 210 and the driven adjustment arm 310 are both To move toward or away from each other at equal distances, the brush head can be kept in the center when the brush head is clamped, thereby reducing the occurrence of side deviation of the brush head and affecting the accuracy of the roller brush, thereby improving the convenience of using the roller brush.

Optionally, in this embodiment, one of the inner wall of the base cylinder 110 and the outer wall of the driven adjusting arm 310 may be provided with a clamping boss 111, and the other may be provided with a clamping groove along its axial direction. 311, the clamping boss 111 is slidably clamped in the clamping groove 311. Here is a specific form in which the driven adjusting arm 310 is slidably clamped to the base cylinder 110, taking the clamping boss 111 provided on the base cylinder 110 and the clamping groove 311 provided on the driven adjusting arm 310 as an example for description, as shown in the figure As shown in 11, the clamping boss 111 is provided in the base cylinder 110, as shown in Figs. 2, 5 and 13, the clamping groove 311 is provided on the outer wall of the driven adjusting arm 310, as shown in Figs. 1, 2 and 2 8 and FIG. 9, the driven adjusting arm 310 is inserted into the base cylinder 110, and the clamping boss 111 is clamped into the clamping groove 311. The arrangement of the clamping groove 311 does not affect the third thread 212 and the fourth thread 312. When the active adjusting cylinder 210 is rotated, the driven adjusting arm 310 is driven by the rotation of the active adjusting cylinder 210, and at the same time, the base cylinder 110 is moved along its axial direction through the engagement of the clamping groove 311 and the clamping boss 111. Due to the guiding and limiting function, the driven adjusting arm 310 cannot rotate, but can only move along the axial direction of the base barrel 110, thereby realizing the opposite or relative movement of the active adjusting barrel 210 and the driven adjusting arm 310. In addition, the clamping boss 111 can also be arranged on the outer wall of the driven adjustment arm 310, and the clamping groove 311 can be arranged on the inner wall of the base cylinder 110; it should be noted that the clamping boss 111 needs to be arranged on the active adjustment cylinder 210 In order to reduce or even avoid the interference caused by the clamping boss 111 to the movement of the active adjusting cylinder 210.

In this embodiment, as shown in Figures 8 and 10, the barrel sections corresponding to the base barrel 110 and the active adjustment barrel 210 can be set as the active section, and the active section is equipped with a first locking member 120, and a first locking member 120 It is used to lock the position where the active adjustment cylinder 210 is screwed into the base cylinder 110. When the active adjustment barrel 210 needs to be adjusted, the first locking member 120 can be loosened, and the active adjustment barrel 210 can be rotated to adjust the distance between the first clamping arm 220 and the second clamping arm 320, and during the adjustment process, the active adjustment barrel 210 The distance between the driven adjusting arm 310 and the base barrel 110 is constantly changing; after the adjustment is completed, the first locking member 120 is locked, and the first locking member 120 locks the position of the active adjusting barrel 210 relative to the base barrel 110, and the driven adjustment Under the action of the axial limit of the base cylinder 110 and the thread limit of the active adjustment cylinder 210, the arm 310 cannot move axially or rotate circumferentially with respect to the base cylinder 110, thereby improving the performance of the active adjustment cylinder 210 and the driven adjustment arm 310. The positional stability improves the clamping firmness of the brush head by the first clamping arm 220 and the second clamping arm 320 accordingly, and reduces the rotation of the active adjustment barrel 210 during use, which causes the brush head to loosen or even fall off.

Optionally, in this embodiment, as shown in FIGS. 1 to 4, the first locking member 120 may include a locking cylinder 123, and the inner wall of the locking cylinder 123 is provided with a locking groove 124 along the locking groove 124. The tightening cylinder 123 extends in the circumferential direction, and the groove depth gradually increases; the outer wall of the active section is provided with a locking boss, the locking boss is provided with a guiding slope 430, and the inclination direction of the guiding slope 430 is in line with the groove of the locking groove 124 The tilting direction of the bottom is the same; the locking cylinder 123 is sleeved in the active section, the locking boss corresponds to the locking groove 124, and during the rotation of the locking cylinder 123, the locking boss is received in the locking groove 124 in a natural state The deep groove section, or the locking boss, abuts the active adjusting cylinder 210 inwardly under the squeeze of the groove bottom of the shallow groove section of the locking groove 124.

Here is a specific form of the first locking member 120. The locking groove 124 includes a deep groove section with a deeper groove depth and a shallow groove section with a shallow groove depth along its length direction. The groove body of the deep groove section can be The position where the locking boss protrudes from the inner wall of the locking cylinder 123 is fully accommodated. The depth of the shallow groove section is less than the height of the locking boss protruding from the inner wall of the locking cylinder 123. When the active adjustment cylinder 210 needs to be rotated and adjusted, the rotation lock The locking cylinder 123 makes the deep groove section of the locking groove 124 correspond to the locking boss on the base cylinder 110, so the groove bottom of the locking groove 124 will not squeeze the locking boss. Accordingly, the locking The boss will not press the active adjustment barrel 210 inward, and the user can adjust the rotation of the active adjustment barrel 210. After the adjustment is completed, rotate the locking cylinder 123 toward the deep groove section, and the groove depth of the groove body corresponding to the locking groove 124 and the locking boss gradually decreases until the bottom of the locking groove 124 and the locking boss The guide slope surface 430 of the contact, continue to rotate the locking cylinder 123, the groove bottom of the locking groove 124 continuously squeezes the guide slope surface 430 inward, and the locking boss continuously protrudes inward under the squeezing action, realizing the active The adjusting cylinder 210 is compressed and locked.

Specifically, the penetration slits 470 can be cut along the axial direction of the active section on both sides of the locking boss, the ability of the locking boss to deform relative to the base cylinder 110 is greatly improved, and the locking groove 124 squeezes the locking boss The locking is smoother.

In this embodiment, as shown in Figures 2, 3, and 5, a card slot 213 can be provided on the outer wall of the active adjustment cylinder 210. The card slot 213 corresponds to the locking boss, and the locking boss is subject to the corresponding locking groove. When the bottom of the shallow groove section of 124 is squeezed, it can be inserted into the card slot 213 inward. After the active adjustment barrel 210 clamps the brush head of the set length, the length of the active adjustment barrel 210 inserted into the base barrel is fixed. At this time, the locking groove 213 on the outer wall of the active adjustment barrel 210 and the locking boss on the base barrel 110 Correspondingly; compared to the locking boss pressing and locking the outer wall of the active adjusting cylinder 210, when the locking groove 124 rotates to the locked position, the bottom of the locking groove 124 squeezes the locking boss inward and deforms convexly Out, the locking boss is locked inwardly into the slot 213, and the rotation limit of the active adjusting cylinder 210 is firmer and more stable, thereby effectively improving the firmness and stability of the first locking member to the active adjusting cylinder 210. .

Specifically, as shown in Figures 1 and 2, a positioning mark 463 can be provided on the outer wall of the base cylinder 110. When the slot 213 on the active adjusting cylinder is aligned with the positioning mark 463, it indicates that the active adjusting cylinder has rotated to the opposite brush head. At this time, the locking boss corresponds to the card slot, which can be clamped and locked.

Specifically, in this embodiment, as shown in FIG. 3, there may be a plurality of locking grooves 124, the plurality of locking grooves 124 are arranged at intervals along the circumferential direction of the locking cylinder 123, and the grooves of the plurality of locking grooves 124 The depth changes in the same direction; there are multiple locking bosses, and the multiple locking bosses correspond to the multiple locking grooves 124 one-to-one, and the multiple locking bosses include a first locking boss 410 and a second locking boss The height of the boss 420, the first locking boss 410 is greater than the height of the second locking boss 420; the slot 213 corresponds to the first locking boss 410. When the locking cylinder 123 rotates to the unlocked position, the first locking boss 410 and the second locking boss 420 are respectively accommodated in the corresponding locking groove 124 in a natural state; when the active adjustment cylinder 210 needs to be locked, the rotary lock The tightening cylinder 123 and the plurality of locking grooves 124 respectively squeeze the corresponding locking bosses inwardly. When the locking cylinder rotates to the locked position, it presses against the first locking boss 410 in the locking groove 124 The degree of deformation from the bottom to the inside is the largest, and the corresponding inward protrusion is the largest, the first locking boss 410 can be locked inward into the slot 213 to lock the active adjustment cylinder 210; at the same time, the second locking The boss 420 also protrudes inward under the squeezing action of the corresponding locking groove 124 to squeeze the outer wall of the active adjustment barrel 210. On the one hand, it reduces the locking firmness of the active adjustment cylinder 210 from being squeezed and bent by the first locking boss 410 and the possibility of breakage, thereby ensuring the effective locking of the first locking boss 410 on the active adjustment cylinder 210 and The normal use of the active adjustment cylinder 210; on the other hand, the second locking boss 420 can assist the first locking boss 410 to compress and lock different parts of the active adjustment cylinder 210, thereby further improving the pairing of the first locking member. Actively adjust the locking firmness and stability of the barrel 210.

In this embodiment, as shown in Figures 1, 2, and 4 to 6, along the axial direction of the base cylinder 110, a limit platform 440 can be provided on one side of the locking boss, and on the other side of the locking boss. One side is threadedly connected to the limiting cylinder 450. When the limiting cylinder 450 rotates toward the locking boss, the locking cylinder 123 can be sandwiched between the limiting cylinder 450 and the limiting platform 440. When it is necessary to rotate the locking cylinder 123, the limit cylinder 450 can be rotated in the direction away from the limit platform 440, the distance between the limit cylinder 450 and the limit platform 440 is increased, and the locking cylinder 123 is no longer clamped. Rotate the locking cylinder 123; when the locking cylinder 123 is rotated to the locked position to squeeze the locking boss, and then to lock the active adjustment cylinder 210, the limit cylinder can be rotated toward the limit table 440 450. The distance between the limit cylinder 450 and the limit table 440 is reduced until the limit table 440 and the limit cylinder 450 clamp the locking cylinder 123 between the two to realize the locking of the locking cylinder 123. This ensures that the locking cylinder 123 squeezes the locking boss, thereby ensuring the locking of the locking boss to the active adjusting cylinder 210, and reducing the loose rotation of the locking cylinder 123 leading to the loosening of the active adjusting cylinder 210.

Optionally, in this embodiment, as shown in FIG. 1, the limiting platform 440 extends along the circumference of the base cylinder 110, and the limiting platform 440 is provided with a limiting notch 441, and the end of the locking cylinder 123 protrudes outward The limit head 125, the limit head 125 extends into the limit gap 441, and along the circumference of the base cylinder 110, one end of the limit gap 441 corresponds to the locking position of the locking cylinder 123, and the other end of the limit gap 441 corresponds to the locking position of the locking cylinder 123. The unlocking position of the locking cylinder 123 corresponds. The limit table 440 can limit the axial position of the locking cylinder 123 installed on the base cylinder 110, and can lock the rotation angle of the locking cylinder 123 together with the limit cylinder 450; when the locking cylinder 123 rotates, its The upper limit head 125 is restricted by the upper limit gap 441 of the limit table 440, and the locking cylinder 123 can only be effectively rotated at the position corresponding to the limit gap 441, and can be set in the limit gap 441 according to the limit head 125. The position judges the degree of locking of the locking cylinder 123 to the active adjusting cylinder 210, thereby greatly improving the convenience of use of the roller brush clamping device.

Specifically, as shown in FIGS. 2, 5, and 6, a lock mark 461 and an unlock mark 462 may be provided on the outer wall of the base cylinder 110. The lock mark 461 corresponds to the end of the limit notch 441 indicating the lock, and the unlock mark 462 is The limit gap 441 indicates that the unlocked end corresponds to. The user can adjust the rotation direction of the locking cylinder 123 according to the locking mark 461 and the unlocking mark 462, which further improves the convenience of using the roller brush clamping device.

In this embodiment, as shown in FIGS. 1, 2 and 7, a reinforcing rib 490 may be provided at the connection between the active adjustment barrel 210 and the first clamping arm 220. The arrangement of the reinforcing rib 490 can improve the firmness and strength of the connection between the two, so as to reduce the occurrence of the first clamping arm 220 being easily broken by external squeezing force and other forces, thereby ensuring the use of the first clamping assembly.

Similarly, a reinforcing rib may also be provided at the connection between the driven adjusting arm 310 and the second clamping arm 320.

In this embodiment, an installation limit mark can also be provided on the active adjustment barrel 210. During installation, the depth at which the active adjusting cylinder is installed into the base cylinder 110 can be defined according to the installation limit mark, and then the driven adjusting arm is installed to ensure that the active adjusting cylinder 210 and the driven adjusting arm 310 extend out of the base cylinder when they are initially connected. The lengths are equal; the setting of the installation limit mark can improve the assembly convenience and assembly accuracy of the roller brush holding device. Specifically, as shown in FIG. 7, the installation limit mark may include an installation limit groove 480 provided on the outer wall of the active adjustment cylinder 210. During installation, when the installation limit groove is aligned with the end of the base cylinder 110, it indicates active adjustment. When the cylinder reaches the set installation position, install the driven adjusting arm.

In addition to adopting the form of the above-mentioned locking cylinder, the first locking member 120 in this embodiment, as shown in FIGS. 9-11, the first locking member 120 may also include a first threaded barrel 121, The outer end is provided with a first pressing cylinder 122 turned inward along its circumference; the active section includes an active thread section 112 and an active guide section 113 in order from the inside to the outside along its axial direction, and the outer wall of the active guide section 113 is along its axis It is narrowed from the inside to the outside, and the active threaded section 112 is threadedly connected in the first threaded barrel 121. Here is another form of the first locking member 120. As shown in the orientation of the clamping device in FIG. 9, the active adjustment barrel 210 is connected to the right side of the base barrel 110. When it is necessary to rotate the active adjustment barrel 210 for adjustment, rotate The first threaded barrel 121, the first threaded barrel 121 drives the first pressing barrel 122 to move to the right until the first pressing barrel 122 no longer squeezes the active guide section 113, and the active guide section 113 no longer presses inward to lock accordingly For the active adjustment barrel 210, rotate the active adjustment barrel 210; after the adjustment is completed, rotate the first threaded barrel 121, the first threaded barrel 121 is threadedly connected with the active threaded section 112, and the first threaded barrel 121 drives the first compression barrel 122 moves to the left, the degree of extrusion of the first compression cylinder 122 and the outer wall of the constricted active guide section 113 gradually increases, and the active guide section 113 squeezes the active adjustment cylinder 210 inward accordingly, and connects the active adjustment cylinder 210 with the base. The barrels 110 are locked together.

Similarly, the barrel section corresponding to the base barrel 110 and the driven adjusting arm 310 is set as the driven section, and the driven section is detachably connected with a second locking member 130, and the second locking member 130 includes a second threaded barrel 131 , The outer end of the second threaded barrel 131 is provided with a second pressing barrel 132 that is turned inward along its axial direction; the driven end includes a driven threaded section 115 and a driven guide section 116 in order from the inside to the outside along the axial direction. , And the outer wall of the driven guide section 116 is narrowed from the inside to the outside along the axial direction, and the driven thread section 115 is threadedly connected in the second threaded barrel 131. The use of the second locking member 130 is similar to that of the first locking member 120, which will not be repeated here. The first locking member 120 locks the position of the active adjusting cylinder 210 relative to the base cylinder 110, and the second locking member 130 The position of the driven adjusting arm 310 relative to the base barrel 110 is locked, thereby improving the positional stability of the active adjusting barrel 210 and the driven adjusting arm 310, and correspondingly further improving the first clamping arm 220 and the second clamping arm 320 to the brush head. The clamping firmness is reduced, and the active adjustment barrel 210 rotates during use, which causes the brush head to loosen or even fall off.

Optionally, in this embodiment, as shown in FIG. 11, the active guide section 113 may be provided with a plurality of active adjustment grooves 114 at intervals along its circumference, and the active adjustment grooves 114 extend along the axial direction of the active guide section 113, and actively adjust The outer end of the groove 114 is opened. When the first threaded cylinder 121 moves to the left, the pressing force of the first pressing cylinder 122 to press the active guide section 113 inward gradually increases, and the circumferential direction of the active guide section 113 is all pressed inward by the first pressing cylinder 122 Tighten, the active guide section 113 shrinks accordingly, the gap between the active adjustment groove 114 is reduced, and the active guide section 113 compresses the active adjustment cylinder 210 to achieve the lock between the two; when the active adjustment cylinder 210 needs to be rotated, the first threaded cylinder 121 drives the first compression cylinder 122 to move to the right. The first compression cylinder 122 no longer compresses the active guide section 113. The active guide section 113 returns to its original shape under the self-recovery action. The distance between the active adjustment grooves 114 becomes larger, and the active guide section 113 no longer squeezes the active adjusting cylinder 210. Wherein, the setting of the active adjustment groove 114 can increase the deformation degree of the active adjustment section. When there is no need to rotate the active adjustment cylinder 210, the active guide section 113 can ensure the rotation of the active adjustment cylinder 210 in it. When it needs to be locked, the active guide section 113 can The deformation locks the active adjustment cylinder 210.

Similarly, as shown in FIG. 11, the driven guide section 116 may also be provided with a plurality of driven adjustment grooves 117 at intervals along its circumferential direction, and the plurality of driven adjustment grooves 117 all extend along the axial direction of the driven guide section 116, and The outer end of the driven adjusting groove 117 is opened. The function of the driven adjusting groove 117 is similar to that of the active adjusting groove 114, and will not be repeated here.

In this embodiment, as shown in FIG. 9, the diameter of the inner cylinder of the driven guide section 116 may correspond to the outer diameter of the driven adjustment arm 310. The cylinder body (defined as the active connecting section) of the base cylinder 110 away from the active end needs to be matched with the active adjusting cylinder 210. Since the active adjusting cylinder 210 is sandwiched between the driven adjusting arm 310 and the active connecting section, the driven adjusting arm 310 There is a gap between the outer wall and the inner wall of the active connecting section, and the thickness of the gap is approximately equal to the wall thickness of the active adjusting cylinder 210. Corresponding to the diameter, on the basis of not affecting the threaded fit between the active adjusting cylinder 210 and the active connecting section, it can guide the movement of the driven adjusting arm 310 along the axis of the base cylinder 110, so as to improve the adjustment process of the driven adjusting arm 310. The accuracy of the movement position further improves the fit between the first clamping arm 220 and the second clamping arm 320, and ensures the clamping effect of the two on the brush head. Specifically, as shown in FIG. 11, the clamping boss 111 may be provided on the inner wall of the driven guide section 116, which can effectively reduce the interference of the clamping boss 111 on the movement of the active adjustment cylinder 210.

In this embodiment, at least one of the first clamping arm 220 and the second clamping arm 320 is provided with a hollow groove that is in a "U" shape and opens toward the base cylinder 110, and an elastic arm is formed in the hollow groove. The arm is provided with a plug connector for pivotally connecting one end of the brush head. Here is a specific form of clamping the brush head by the first clamping arm 220 and the second clamping arm 320. Specifically, as shown in FIG. 12, the first clamping arm 220 can be arranged in a "U" shape and The opening faces the first hollow groove 222 of the active adjustment barrel 210, a first elastic arm 223 is formed in the first hollow groove 222, and the first elastic arm 223 is provided with a first plug joint 221. The arrangement of the first hollow groove 222 can improve the deformability of the first elastic arm 223 and the first clamping arm 220. When the brush head needs to be installed, the active adjustment barrel 210 can be rotated first to set the number of turns, so that the first clamping arm 220 The distance between the second clamping arm 320 and the second clamping arm 320 reaches the clamping distance, and then the first clamping arm 220 is moved outward, the brush head is squeezed between the first clamping arm 220 and the second clamping arm 320, and then released The first clamping arm 220, the first clamping arm 220 return to the original position, the first plug connector 221 is inserted into the first plug slot, and the second plug connector 321 is inserted into the second plug slot to complete the installation of the brush head. Further improve the installation convenience of the brush head.

Similarly, the second clamping arm 320 may also be provided with a second hollow groove 322 having a "U" shape and opening toward the driven adjusting cylinder. A second elastic arm 323 is formed in the second hollow groove 322, and the second elastic arm 323 is provided with a second plug connector 321. The arrangement of the empty slot on the second floor can improve the deformability of the second elastic arm 323 and the second clamping arm 320, and the working principle is similar to that of the first clamping arm 220, which will not be repeated here.

Correspondingly, the opposite ends of the brush head are respectively provided with a first plug slot matching the first plug connector 221 and a second plug slot matching with the second plug connector 321. When clamped, the first plug connector 221 is inserted into the first insertion slot, the second insertion connector 321 is inserted into the second insertion slot, and the brush head can rotate relative to the first insertion connector 221 and the second insertion connector 321. In addition to the above forms of pivotal connection between the brush head and the clamping device, plug joints may also be provided at opposite ends of the brush head, and plug grooves may be provided on the first clamping arm 220 and the second clamping arm 320.

In addition to the above-mentioned clamping methods for the first clamping arm and the second clamping arm, in this embodiment, as shown in FIGS. 1, 5 and 7, both the first clamping arm 220 and the second clamping arm 320 At least one of them may be provided with a mounting opening 224, a rotating arm 225 is hinged in the mounting opening 224, and the rotating arm 225 is provided with a plug connector for pivotally connecting the brush head. When the positions of the active adjusting barrel and the driven adjusting arm in the base barrel are determined, the rotating arm can be rotated outward, and then the brush head can be placed between the first clamping arm and the second clamping arm, and then rotating inward The arm, the rotating arm returns to the original position, and the plug connector on it is inserted into the plug slot of the brush head. Specifically, only a rotating arm can be provided on the first clamping arm, and a plug connector can be fixedly connected to the second clamping arm; or only a rotating arm can be provided on the second clamping arm, and a rotating arm can be fixedly connected to the first clamping arm. Plug connector; or the first clamping arm and the second clamping arm are pivotally connected with a rotating arm.

Specifically, as shown in FIG. 7, in both the side wall of the installation opening 224 and the rotating arm 225, one may be provided with a card joint 227, and the other may be provided with a locking groove 228. Initially, the card connector is clamped into the locking groove 228, the rotating arm is fixed on the clamping arm, and the plug connector on it pivotally restricts the brush head; when the rotating arm needs to be rotated, push the rotating arm outward to snap the connector 227 is disengaged from the locking groove 228, and the rotating arm can be rotated and adjusted; after the new brush head is installed, the rotating arm is pushed inward, and the clamping joint is locked into the locking groove again. In addition to the above forms, a torsion spring can be installed at the hinge joint of the rotating arm to drive the rotating arm to clamp the brush head.

In this embodiment, the first clamping arm and the second clamping arm may also adopt the following clamping manner: at least one of the first clamping arm 220 and the second clamping arm 320 is detachably fixedly connected There is a connector 226 for pivotally connecting the brush head. When you need to install the brush head, you can adjust the position of the plug on the clamping arm or remove the plug directly. After the position of the brush head is determined, adjust the plug or install the plug to make it plug in. Insert into the brush head. Specifically, as shown in FIGS. 14 and 15, a mounting hole 229 may be provided on the elastic arm of the clamping arm, and the plug-in member 226 may use a bolt and nut matching structure.

In this embodiment, the bracket 100 may further include a mounting seat 140 fixed to the outer wall of the base cylinder 110, and the mounting seat 140 is used for mounting a handle. The clamping device can be detachably connected with handles of different lengths through the mounting seat 140. The user can select a handle of a suitable length to use according to actual needs, so that the convenience of using the clamping device is further improved; when the roller brush is not required, the handle can be Remove to facilitate the placement and transportation of the clamping device.

Optionally, the roller brush clamping device of the embodiment of the present disclosure further includes a first brush head end cover and a second brush head end cover respectively provided on the first clamping arm and the second clamping arm, wherein the The first brush head end cap is detachably connected to the first clamping arm through a first trocar, and the second brush head end cap is detachably connected to the second clamping arm through a second trocar Above, the first brush head end cover can rotate around the central axis of the first trocar, and similarly, the second brush head end cover can rotate around the central axis of the second trocar.

Generally, the brush head can be a hollow cylindrical structure, and the two ends of the brush head can be fitted with two end caps during use, which is different from the existing known brush head with the end caps at both ends pre-installed on the brush head. The two ends and then the brush head and the end cover as a whole are installed on the roller brush clamping device. In the embodiment of the present disclosure, the first brush head end cover and the second brush head end cover are pre-installed on the roller brush On the clamping device, in the process of installing the brush head, the user only needs to put the hollow roller brush head (usually called the bristle) on the end caps on the first clamping arm and the second clamping arm of the clamping device It can be used immediately, which greatly facilitates the user's installation and replacement process, and improves the efficiency of product use.

Optionally, the first brush head end cover and the second brush head end cover may have the same structure, and the first trocar and the second trocar may have the same structure; optionally, The first brush head end cover or the second brush head end cover may be made of materials such as plastic or metal, and the first trocar or the second trocar may be made of materials such as plastic or metal.

Taking the structure of the first brush head end cap and the first trocar as an example, the structural features of the first brush head end cap and the first trocar in the embodiments of the present disclosure will be described in detail. The second brush head end cap and the second set The structural features of the needle and the arrangement on the roller brush clamping device of the present disclosure are similar to the first brush head end cap and the first trocar, so they will not be repeated.

Optionally, the first trocar includes a first end, a second end, a first section, and a second section, wherein the first end, the first section, the second section, and the second section The two ends are connected in turn.

Optionally, the first end, the second end, the first section, and the second section may be integrally formed, or may be combined together to form the first trocar.

Optionally, the second end, the first section, and the second section may have a cylindrical shape, preferably a cylindrical shape.

Optionally, the surface of the second end portion is smooth.

Optionally, the first end may have a cylindrical shape, preferably a cylindrical or square column shape.

Optionally, the cross-sectional size of the first end portion may be greater than the cross-sectional size of the first section, and the radial size of the first section may be less than or equal to the radial size of the second section.

Optionally, a threaded portion is provided at the second end, and the threaded portion is used for threaded connection to the first threaded hole on the first clamping arm, and the threaded portion can be fitted with a nut and/or The gasket is used to screw the first trocar into the first threaded hole. When the first trocar is fixed on the first clamping arm, the center of the first trocar The shaft axis may be substantially perpendicular to the first clamping arm.

Optionally, the first brush head end cover includes a base, a first extension, and a second extension, wherein the base may be a ring-shaped component, and the inner ring part and the outer ring part of the ring-shaped component The shape of can be concentric circles.

Optionally, the first extension portion may be a cylindrical member extending from the periphery of the inner ring in a direction perpendicular to the plane where the base is located, wherein the inner diameter of the cylindrical member may be substantially Is equal to the radial dimension of the second section of the first trocar for accommodating the first trocar, passing along the central axis of the cylindrical member and the central axis of the first trocar The alignment direction is such that the first trocar passes through the inner part of the cylindrical member, and the first brush head end cap is detachably nested on the first trocar to complete the first brush Installation of the head end cover.

Optionally, the inner surface of the cylindrical member is smooth, so that the first brush head end cap can wrap around the first trocar or the barrel after being installed on the first trocar. The axis of the central axis of the shaped member rotates, the end of the first extension that is away from the base may be a dentate structure including a plurality of teeth in the circumferential direction, and the teeth in the dentate structure The part may have elasticity and may be stretched a certain distance away from the axis of the central axis of the cylindrical member, each of the tooth parts may include at least one protruding part protruding inwardly toward the radial direction, the protruding part The protruding length can be less than or equal to the difference in cross-sectional size of the first section and the second section of the first trocar. During the process of the trocar, the first end of the first trocar can open up the protruding part of the tooth part of the urban tooth structure to be exposed to the outside of the cylindrical member, and then follow the first brush The head end cover is completely clamped to the first trocar, the tooth portion recovers from deformation, and the protrusion on the tooth portion rebounds to abut or hover on the first section of the first trocar.

Optionally, the second extension portion may be a cylindrical member formed by extending from the periphery of the base and extending in a direction perpendicular to the plane of the base, and the second extension portion is used to be inserted into the end of the brush head. In the part, it is joined with the end of the brush head.

Optionally, the end cap further includes at least one connecting portion formed between the first extension portion and the second extension portion, and the at least one connecting portion is used to support the first extension portion and the second extension portion. The second extension portion enhances the stability of the end cap structure and is beneficial to reduce the possibility of deformation. The at least one connecting portion includes from the base, along a direction perpendicular to the plane of the base, and At least one arched portion is formed by extending between the outer surface of the first extension portion and the inner surface of the second extension portion.

For ease of understanding, the structure of the first end cap and the first trocar matched with the first clamping arm 220 and the installation manner of the first end cap and the first trocar of the present disclosure are exemplarily described below in conjunction with specific embodiments and FIGS. 16-24:

Referring to the schematic perspective view of the trocar structure of the embodiment of the present disclosure shown in FIG. 16, the first trocar 500 includes a first end 501, a first section 502, a second section 503, and a second end 504, The illustrated first end 501, first section 502, second section 503, and second end 504 are cylindrical shapes. In practical applications, the first end 501 may also be a square cylinder, a prism, etc. For other shapes, the main function of the first end 501 is to limit the displacement of the end cover during rotation and is not used to support the rotation of the end cover, so the shape of the first end 501 is not restricted; the surface of the second end 502 is Smooth, as can be seen from the schematic cross-sectional view of the final end cover installation in Figure 24, the second end 502 is used to fit the inner wall of the cylindrical member in the end cover to support the rotation of the end cover, so the second end can be The surface of the portion 502 is set as a smooth surface, and a lubricant can be coated on the surface of the second end portion 502 during use so that the end cap can rotate smoothly. In addition, as shown in FIG. 16, the radial dimension of the first end 501 may be greater than the radial dimension of the first section 502, and the radial dimension of the first section 502 may be less than or equal to the radial dimension of the second section 503. size. Referring to Figure 24, such a structural design can enable the end cap to be completely snapped onto the trocar after the end cap is finally installed on the trocar. In order to understand this design more clearly, the following is an example of the end cap structure There will be further explanations in the introduction, so I won’t repeat them here. The second end 504 is provided with a threaded portion (not shown in FIG. 16). Referring to Figure 18, the threaded portion is used to fix the first trocar 500 to the first threaded hole of the first clamping arm through a threaded connection. The threaded portion can be used with a nut and/or washer for fixing (Figure 16 The position of the nut 505 is shown). When the first trocar 500 is fixed on the first clamping arm, the central axis of the first trocar 500 can be substantially perpendicular to the first clamping arm, as shown in Figs. 20, 21, 24 or 25 as shown.

Referring to the schematic perspective view of the end cap structure of the embodiment of the present disclosure shown in FIG. 17 and the schematic cross-sectional view of the end cap structure of the embodiment of the present disclosure shown in FIG. An extension 602 and a second extension 603.

The base 601 may be a ring-shaped member, especially a circular ring-shaped member, and its central area may be a hollow area concentric with the circular-ring member. Of course, it can be understood that the shape of the base 601 is not limited to a ring shape, but can be adaptively changed according to actual needs. In the embodiments of the present application, only a ring is taken as an example for non-limiting description.

The first extension 602 may be a cylindrical member extending from the periphery of the hollow area in a direction perpendicular to the plane where the base 601 is located. As shown in FIG. 25, the cylindrical member is close to the inner side of the base 601. The diameter is substantially uniform and may be substantially equal to the radial dimension of the second section 503 of the first trocar 500 for accommodating the first trocar 500. The inner surface of the cylindrical member may be smooth, so that the first brush head end cap 600 can rotate around the central axis of the first trocar 500 after being installed on the first trocar 500. The end of the first extension 602 away from the base 601 may be a lenticular structure including a plurality of teeth. As shown in FIG. 17, the teeth 6021 in the lenticular structure may be elastic and can be subjected to force It is stretched a certain distance away from the axis of the central axis of the cylindrical member. The end of each tooth 6021 may include at least one protrusion 701 protruding inward in the radial direction of the base 601. As shown in FIG. 18, the length of the protrusion 701 protruding in the radial direction (or "in the radial direction The extension range ") may be less than or equal to one-half of the difference between the radial dimensions of the first section 502 and the second section 503 of the first trocar 500. As shown in FIG. 24, the protruding length of the protrusion 701 is less than one-half of the difference between the radial dimensions of the first section 502 and the second section 503 of the first trocar 500, so that the first brush head After the end cap 600 is installed on the first trocar 500, the first extension 602 of the first brush head end cap 600 can be straight. In other words, the teeth 6021 are not elastically deformed at this time. When the radial protrusion length of the protrusion 701 is equal to half of the above-mentioned radial dimension difference, after the first brush head end cap 600 is installed on the first trocar 500, each protrusion 701 basically circumscribes the second part The circumferential outer surface of the segment 502. 24 and 16, the radial dimension of the first end portion 501 is larger than the diameter of the annular area (annular opening) surrounded by the protrusions 701 in a natural state, that is, in a state without forced force. When assembling the first trocar and the first end cap, when the first end 501 travels to the position of the protrusion 701 in the axial direction of the cylindrical member, it is necessary to exert a certain force on the protrusion. The dentate structure to which the dent portion is connected makes the dentate structure expandable, so that the annular opening surrounded by each protrusion 701 is enlarged, thereby allowing the first end 501 to pass through; and when the first end 501 After passing through the annular opening, the dentate structure will be restored to its original shape because it is no longer subject to the force of force. In the assembled state, the first end portion 501 restricts the first extension portion 602 to move away from the base 601 beyond the first end portion 501 in the axial direction by a radial dimension larger than the annular opening. The first extension 602 also forms a receiving portion 605 near the base 601, and the inner diameter of the receiving portion 605 may be slightly larger than the inner diameter of the first extension 602 near the dentate structure for accommodating the nut. 505.

The second extension 603 may be formed from the periphery of the base 601 and extends in a direction perpendicular to the plane of the base 601, as shown in FIG. 18, wherein the second extension 603 and the first extension 602 face the same direction In the direction of extension. The second extension part 603 is used for inserting into the end of the brush head such as a bristle sleeve for supporting the bristle sleeve.

As shown in FIG. 17, the first brush head end cover 600 further includes at least one connecting portion 604 formed between the first extension portion 602 and the second extension portion 603. The connecting portion 604 is used to support the first extension portion 602 and the second extension portion 603. Two extension 603. FIG. 17 illustrates a plurality of arch-shaped connecting portions 604 that are evenly distributed on the outer surface of the first extension portion 602 and the inner surface of the second extension portion 603 in the circumferential direction of the base 601 around the first extension portion 602 between. In the area enclosed by the first extension portion 602, the second extension portion 603 and the two adjacent connecting portions 604, the base 601 may be hollowed out (equivalent to the base 601 no longer exists), that is, Only the multiple connecting portions 604 and the second extension portion 603 are used to fix the first extension portion 602 as a whole to the central area of the first brush head end cover 600 instead of relying on the base 601 to provide connection support. This structural design can Further reduce the consumption of production materials.

Hereinafter, the installation process of the end cap and the trocar of the present disclosure will be exemplarily described with reference to FIGS. 19-25:

19-21, the first trocar 500 can be installed and fixed to the first threaded hole 801 through the threaded portion provided on the second end 504, and then, referring to Figures 22 and 23, along the first brush head The axis of the central axis of the end cap 600 is aligned with the axis of the central axis of the first trocar 500, and the first brush head end cap 600 is placed on the first trocar 500 so that the first brush head end cap 600 reaches as shown in the figure. 22 or the position shown in FIG. 23: the first end 501 of the first trocar 500 is close to the protrusion 701 of the first brush head end cover 600. Then, the teeth 6021 of the first brush head end cover 600 can be manually expanded a little, so that the first end 501 of the first trocar 500 can completely pass through the protrusion and be exposed outside the first extension 601 , After loosening the stretched tooth 6021 to restore its deformation, the protrusion 701 springs back against the first section 502 of the first trocar 500 or hovering on the first section 502, as shown in Figure 24 Or as shown in Figure 25, the end cap and trocar installation process is over, the end cap can rotate smoothly around the center axis of the end cap or the trocar.

Optionally, the installation of the brush head may include the following steps: rotating the first clamping assembly so that the distance between the first clamping arm and the second clamping arm is greater than the length of the brush head to be installed (at least as long as the brush head can be covered Enter the distance between the two end caps) and then insert one end of the brush head into one of the first end cap and the second end cap, the other end of the brush head abuts the other end cap, and then rotate The first clamping arm allows the two end caps to face the ends of the brush head and be respectively embedded into the two ends of the brush head. At this time, the two end caps are in the facing position, and the brush head can cover the ends of the brush head. Rotate under support, so that rolling action can be achieved.

In addition, the embodiment of the present disclosure also provides another device structure for fixing the active adjusting barrel 210 and the driven adjusting arm 310 relative to the base barrel 110. As shown in FIG. 26, the device structure omits the above Instead of locking components such as the locking barrel 123 and the limiting barrel 450, a second threaded hole 901 is provided at substantially the middle of the base barrel 110, and a threaded knob 902 is screwed into the second threaded hole 901 to Against the outer surface of the active adjustment barrel 210 inside the base barrel 110, the threaded knob 902 is tightened to compress the active adjustment barrel 210 to achieve the fixation of the active adjustment barrel 210. After the active adjustment barrel 210 is fixed, the active adjustment The driven adjusting arm 310 inside the barrel 210 is then also fixed. This is because the latching groove 311 prevents the driven adjusting arm 310 from rotating, and after the screw knob 902 is tightened, the active adjusting barrel 210 produces a certain deformation and thus affects the driven The adjustment arm 310 generates a pressure, and the above two points can be combined to realize the fixation of the driven adjustment arm 310.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some or all of the technical features thereof are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Industrial applicability

The embodiment of the present disclosure provides a roller brush holding device and a roller brush. Since the roller brush holding device of the embodiment of the present disclosure only needs to rotate the active adjustment barrel to realize the disassembly and assembly of the brush head, the disassembly and assembly are more convenient; In the process, the brush head can be kept in the center when the brush head is clamped, thereby reducing the occurrence of the deviation of the brush head from one side and affecting the accuracy of the roller brush, thereby improving the convenience of using the roller brush; The end cap of the brush head is set on the roller brush clamping device. When replacing or installing the brush head, it is only necessary to cover the brush head cover on the end caps on the first clamping arm and the second clamping arm. , This simplifies the installation steps and improves the efficiency of product use.

Claims

A roller brush clamping device, which is characterized in that it comprises a bracket (100), a first clamping assembly (200) and a second clamping assembly (300). The bracket (100) includes a base cylinder ( 110), the first clamping assembly (200) includes an active adjustment barrel (210) and a first clamping arm (220) fixedly connected to the first end of the active adjustment barrel (210), the active adjustment The second end of the barrel (210) is screwed into the base barrel (110);

The second clamping assembly (300) includes a driven adjustment arm (310) and a second clamping arm (320) fixedly connected to the first end of the driven adjustment arm (310). The second end of the arm (310) is slidably clamped to the base barrel (110) along its axial direction, and is screwed into the active adjustment barrel (210); the base barrel (110), the active adjustment barrel ( 210) and the threaded direction of the driven adjusting arm (310) are the same, and the threaded pitch of the driven adjusting arm (310) is twice the threaded pitch of the base cylinder (110).
The roller brush clamping device according to claim 1, characterized in that the barrel section corresponding to the base barrel (110) and the active adjustment barrel (210) is an active section, and the active section is equipped with a first lock A tightening member (120), the first locking member (120) is used to lock the position where the active adjustment cylinder (210) is screwed into the base cylinder (110).
The roller brush clamping device according to claim 2, wherein the first locking member (120) comprises a locking cylinder (123), and the inner wall of the locking cylinder (123) is provided with a locking groove (124), the locking groove (124) extends along the circumferential direction of the locking cylinder (123), and the depth of the groove gradually increases; the outer wall of the active section is provided with a locking boss, and the locking The boss is provided with a guide slope surface (430), the inclination direction of the guide slope surface (430) is consistent with the inclination direction of the groove bottom of the locking groove (124);

The locking cylinder (123) is sleeved on the active section, the locking boss corresponds to the locking groove (124), and during the rotation of the locking cylinder (123), the lock The tightening boss is accommodated in the deep groove section of the locking groove (124) in a natural state, or the locking boss is pressed inwardly under the squeezing of the bottom of the shallow groove section of the locking groove (124) Connect to the active adjustment barrel (210).
The roller brush clamping device according to claim 3, characterized in that the outer wall of the active adjustment cylinder (210) is provided with a clamping groove (213), and the clamping groove (213) is opposite to the locking boss Correspondingly, when the locking boss is squeezed by the bottom of the shallow groove section of the corresponding locking groove (124), it can be inserted into the card slot (213) inward.
The roller brush clamping device according to claim 3 or 4, characterized in that, along the axial direction of the base cylinder, a limit platform (440) is provided on one side of the locking boss, and the locking boss The other side of the table is threadedly connected with a limit cylinder (450). When the limit cylinder (450) rotates toward the locking boss, the locking cylinder (123) can be clamped on the limit cylinder ( 450) and the limit platform (440).
The roller brush clamping device according to claim 5, characterized in that the limit table (440) extends along the circumferential direction of the base cylinder (110), and the limit table (440) is provided with a limit A gap (441), the end of the locking cylinder (123) protrudes outwardly with a limit head (125), and the limit head (125) extends into the limit gap (441) along the In the circumferential direction of the base cylinder (110), one end of the limiting gap (441) corresponds to the locking position of the locking cylinder (123), and the other end of the limiting gap (441) is connected to the locking position The unlocked position of the barrel (123) corresponds.
The roller brush clamping device according to any one of claims 2-6, wherein the first locking member (120) comprises a first threaded barrel (121), and the first threaded barrel (121) The outer end of) is provided with a first compression cylinder (122) that is turned inward along its circumferential direction; the active section includes an active thread section (112) and an active guide section (113) in order from the inside to the outside along the axial direction, and The outer wall of the active guide section (113) is narrowed from the inside to the outside along its axial direction, and the active thread section (112) is threadedly connected in the first thread barrel (121); and/or, the The base barrel (110) and the barrel section corresponding to the driven adjusting arm (310) are driven sections, and the driven section is detachably connected with a second locking member (130), and the second locking member (130) includes a second threaded barrel (131), the outer end of the second threaded barrel (131) is provided with a second pressing barrel (132) turned inward along its axial direction; Its axial direction includes a driven thread section (115) and a driven guide section (116) in order from the inside to the outside, and the outer wall of the driven guide section (116) is narrowed from the inside to the outside along the axial direction. The driven threaded section (115) is threadedly connected in the second threaded barrel (131).
The roller brush clamping device according to any one of claims 1-7, wherein at least one of the first clamping arm (220) and the second clamping arm (320) One is provided with a "U"-shaped hollow groove with an opening facing the base tube (110), an elastic arm is formed in the hollow groove, and the elastic arm is provided with a plug connector for pivotally connecting one end of the brush head;

Or, at least one of the first clamping arm (220) and the second clamping arm (320) is provided with a mounting port (224), and a rotating arm is hinged in the mounting port (224) (225), the rotating arm (225) is provided with a plug connector for pivotally connecting the brush head;

Or, at least one of the first clamping arm (220) and the second clamping arm (320) is detachably fixedly connected with a plug (226) for pivotally connecting the brush head.
The roller brush clamping device according to any one of claims 1-8, wherein one of the inner wall of the base cylinder (110) and the outer wall of the driven adjusting arm (310) One is provided with a clamping boss (111), the other is provided with a clamping groove (311) along its axial direction, and the clamping boss (111) is slidably clamped in the clamping groove (311).
The roller brush clamping device according to any one of claims 1-7 or 9, further comprising a first brush head end cover and a second brush head end cover, wherein the first brush head end The cover is configured to be detachably connected to the first clamping arm (220) through a first trocar and can rotate around the central axis of the first trocar, and the second brush head end cover is configured to pass The second trocar is detachably connected to the second clamping arm (320) and can rotate around the central axis of the second trocar.
The roller brush holding device according to claim 10, wherein the first trocar and the second trocar each comprise: a first end, a second end, a first section, and a first end. Two parts,

The first end, the first section, the second section, and the second end are configured to be sequentially connected and integrally formed, or can be combined in sequence to form the first trocar or the Said the second set of needles,

The first end, the second end, the first section, and the second section are cylindrical,

The radial dimension of the first end portion is greater than the radial dimension of the first section, and the radial dimension of the first section is smaller than or equal to the radial dimension of the second section.
The roller brush clamping device according to claim 11, characterized in that a threaded part is provided at the second end, and the first clamping arm (220) and the second clamping arm (310) are provided There is a corresponding first threaded hole, so that the second end is threadedly connected to the corresponding first threaded hole.
The roller brush clamping device according to claim 10, wherein the first brush head end cover and the second brush head end cover each comprise: a base, a first extension, and a second extension,

The base includes an annular member, and the annular member includes a central hollow area concentric with the annular member;

The first extension portion includes a first cylindrical member configured to extend from the periphery of the hollow area in a direction perpendicular to the plane where the base is located;

The second extension portion includes a second cylindrical member configured to extend from the periphery of the ring member in a direction perpendicular to the plane where the base is located.
The roller brush holding device according to claim 13, wherein the first cylindrical member includes an elastically deformable structure, and the elastically deformable structure is disposed on the first cylindrical member away from the base. On the end of the seat,

The elastically deformable structure includes an urban tooth-like structure having at least one tooth portion arranged along the circumferential direction of the first cylindrical member, and at least one tooth portion of the urban tooth-like structure is capable of being subjected to a forced force. Deforms toward a direction away from the axis of the central axis of the first cylindrical member,

The tooth portion is provided with a protruding portion protruding inward in the radial direction of the ring member.
The roller brush holding device according to claim 14, wherein the radial dimension of the first end portion is larger than that of the protrusions surrounded by each protruding portion in a state where the lenticular structure is not subjected to a forced force. The radial size of the annular opening; and the radial size of the annular opening can be increased to be equal to or greater than the radial size of the first end when the lenticular structure is forced.
The roller brush holding device according to claim 14 or 15, wherein the protruding length of the protrusion is less than or equal to the first section of the roller brush holding device according to claim 11 One half of the difference with the radial dimension of the second section.
The roller brush clamping device according to claim 1 or 10-16, further comprising a threaded knob, a second threaded hole is provided in the middle of the base cylinder (110), and the threaded knob is configured It is connected to the base barrel (110) through the second threaded hole, and abuts against the outer surface of the active adjustment barrel (210) contained in the interior of the base barrel (110) for fixing the base barrel (110). Actively adjust the barrel (210).
A roller brush, characterized by comprising a brush head and the roller brush clamping device according to any one of claims 1-17, the brush head being pivotally connected to the first clamping arm of the roller brush clamping device (220) and the second clamping arm (320).
A brush head end cover applied to the roller brush holding device according to any one of claims 1-7, wherein the brush head end cover is configured to be detachably connected to the first through a trocar. A clamping arm (220) or the second clamping arm (310) can rotate around the central axis of the trocar.
The brush head end cover of claim 19, wherein the brush head end cover comprises: a base, a first extension part, and a second extension part,

The base includes an annular member, and the annular member includes a central hollow area concentric with the annular member;

The first extension portion includes a first cylindrical member configured to extend from the periphery of the hollow area in a direction perpendicular to the plane where the base is located;

The second extension portion includes a second cylindrical member configured to extend from the periphery of the ring member in a direction perpendicular to the plane where the base is located.
The brush head end cap of claim 20, wherein the first cylindrical member comprises an elastically deformable structure, and the elastically deformable structure is disposed on the first cylindrical member away from the base. On the end of

The elastically deformable structure includes an urban tooth-like structure having at least one tooth portion arranged along the circumferential direction of the first cylindrical member, and at least one tooth portion of the urban tooth-like structure is capable of being subjected to a forced force. Deforms toward a direction away from the axis of the central axis of the first cylindrical member,

The tooth portion is provided with a protruding portion protruding inward in the radial direction of the ring member.
A trocar applied to the roller brush clamping device according to any one of claims 1-7, wherein the trocar includes: a first end, a second end, a first section, And the second section,

The first end, the first section, the second section, and the second end are configured to be sequentially connected and integrally formed, or can be combined in sequence to form the trocar,

The first end, the second end, the first section, and the second section are cylindrical,

The second end is provided with a threaded portion for threaded connection with a corresponding threaded hole provided on the first clamping arm or the second clamping arm;

The cross-sectional radial dimension of the first end portion is greater than the cross-sectional radial dimension of the first section, and the radial cross-sectional dimension of the first section is less than or equal to the radial cross-sectional dimension of the second section.