Integrated dead angle-free double-shaft roller brush inner core assembly and roller brush

Abstract

The utility model discloses an integral type dead angle free double shaft cylinder brush inner core subassembly and cylinder brush, wherein, the inner core subassembly includes support structure, the support structure includes support piece and plug -in spare, and support piece includes the core axle pipe, and both ends of core axle pipe are fixedly connected with the sink sleeve pipe, and the outer lateral wall of core axle pipe is fixedly equipped with a plurality of annular distribution's support plate, and the outer circle lateral wall of core axle pipe is fixedly equipped with a plurality of round clamping plate along the axis direction, and support plate and round clamping plate are integrally formed, and the plug -in spare is clamped and is equipped with in support piece both ends, and two plug -in spares adopt the fixed occlusion mode with support assembly horizontal section, can prevent its in horizontal direction and move. And, by the rotation of support piece and plug -in spare, the noise generated by the direct rotation of the horizontal section of the support and the core shaft in the past is eliminated, has the mute function, improves the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of roller brush technology, specifically to an integrated dual-axis roller brush core assembly and roller brush with no dead angles. Background Technology

[0002] Roller brushes are widely used, from wall painting in decoration and renovation to cleaning buildings and cars. Due to their simple structure and ease of operation, they play an important role in many situations. Generally, a roller brush consists of a roller brush holder, a roller, and roller brush accessories connecting the roller and the holder. For a roller brush with no blind spots, simply snap the roller brush accessories into the roller from one end to complete the assembly and it's ready to use.

[0003] Based on the above, the inventors discovered that:

[0004] Existing roller brushes without blind spots consist of a spindle inserted into the brush. However, conventional roller brushes only have a spindle at one end, resulting in single-axis rotation and instability. Furthermore, conventional roller brush accessories involve direct friction between the brush holder and the plastic core. This friction can cause the holder to discolor or generate heat, leading to deformation of the plastic core and affecting the brush's normal operation. Additionally, the friction between the plastic core and the holder assembly easily produces abnormal noises, emitting a harsh sound.

[0005] Therefore, in view of this, we studied and improved the existing structure and proposed an integrated roller brush accessory with no dead angles to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an integrated, dead-angle-free dual-axis roller brush core assembly that enables the roller brush to rotate stably during operation, avoiding uneven coating caused by shaking or shifting, thereby ensuring a uniform coating effect. This assembly can solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an integrated dual-axis roller brush core assembly with no dead angle, comprising a support structure, wherein the support structure includes a support member and two plug-in members;

[0008] The support includes a mandrel tube, both ends of which are fixedly connected to countersunk sleeves. Several annularly distributed support plates are fixedly provided on the outer sidewall of the mandrel tube. Several circular clamping plates (113) are fixedly provided on the outer circular sidewall of the mandrel tube along its axial direction. The support plates and the circular clamping plates are integrally formed.

[0009] The two connectors are rotatably connected to both ends of the support member for fixed connection with the roller brush bracket assembly.

[0010] Preferably, the support member has several annularly arranged arc-shaped guide plates fixedly provided on the outer wall near the insertion end.

[0011] Preferably, the outer wall of the tail end of the support plate has evenly spaced serrations.

[0012] Preferably, the connector includes a tube, the insertion end of which is fixedly connected to a tapered sleeve tube, and the tail end is fixedly connected to a frustum-shaped limiting sleeve. The tapered sleeve tube has two symmetrically arranged snap-fit ​​notches on its outer side wall, and the frustum-shaped limiting sleeve has a tensioning notch on its outer side wall. The tube is inserted into the sleeve tube.

[0013] Preferably, the connectors are provided with a locking slot at the position of the countersunk sleeve.

[0014] Preferably, the length of the mandrel tube is greater than half the length of the roller brush.

[0015] A one-piece, no-dead-angle dual-axis roller brush, comprising:

[0016] Bracket assembly;

[0017] As described above, the two connectors of the integrated dual-axis roller brush core assembly with no dead angle are respectively fixedly connected to the horizontal section of the bracket assembly.

[0018] A roller brush, which is sleeved on the outside of the support member.

[0019] Optionally, the tapered sleeve of the connector forms a fixed engagement with the horizontal section of the bracket assembly through its snap-fit ​​notch.

[0020] Optionally, the support member can be rotatably engaged with corresponding connectors through countersunk sleeves at both ends, allowing the support member and the roller brush sleeved thereon to rotate relative to the fixed bracket assembly.

[0021] Optionally, a handle is connected to the rear end of the bracket assembly.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. The support structure, consisting of a mandrel tube, annularly distributed support plates, and a circular clamping plate fixed along the axial direction, forms a support frame that fits tightly against the inner wall of the roller brush, providing effective radial and axial support and positioning. The connectors at both ends cooperate with the countersunk sleeves of the support components, further fixing and limiting the roller brush from both ends, effectively preventing axial movement of the roller brush on the support components. A stable support component is installed inside the roller brush cylinder, with rotatable connectors at both ends. These two connectors are fixedly installed on the horizontal section of the bracket assembly.

[0024] 2. The notch on the outer wall of the tapered sleeve of the connector provides excellent elastic deformation, allowing it to smoothly engage with the corresponding position inside the countersunk sleeve, achieving rotational engagement with the support component. The tension notch on the outer wall of the frustum-shaped limiting sleeve elastically generates force after the connector is inserted, causing the frustum-shaped limiting sleeve to contact and adhere to the inner wall of the countersunk sleeve. Simultaneously, the locking mechanism formed by the slots on the countersunk sleeve that match specific parts of the connector not only enhances rotational stability after insertion, preventing wobbling or separation, but also provides intuitive tactile feedback by exposing the connector's head area and providing a distinct tactile feedback, allowing users to judge whether the connector is installed correctly. This avoids issues such as improper installation affecting the stability and performance of the roller brush, further improving the accuracy and convenience of installation.

[0025] 3. The roller brush is supported by snap-fit ​​and support components. This assembly method is not only simple in structure and easy to manufacture, but also effectively reduces production costs. This assembly method also has good interchangeability and versatility, which facilitates maintenance and replacement of parts and extends the overall service life of the roller brush.

[0026] 4. The two connectors are fixedly engaged with the horizontal end of the bracket assembly, and rotatably connected to both ends of the support component. The support component is fixedly installed inside the roller brush, enabling the roller and support component to rotate around the connectors. This makes the roller brush more stable during rotation, reducing noise and vibration caused by unstable rotation and improving the user experience. Simultaneously, the fixed engagement of the two connectors with the horizontal end of the bracket assembly also ensures the stability of the entire roller brush structure, preventing horizontal movement and enhancing installation firmness and rotational stability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a three-dimensional structural diagram of the present invention after explosive decomposition;

[0029] Figure 3 This is a three-dimensional structural diagram of the support component and disassembly component of this utility model after disassembly;

[0030] Figure 4 for Figure 3 Schematic diagram of the structure in frontal view;

[0031] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at section AA.

[0032] In the diagram: 1. Support structure; 11. Support component; 111. Mandrel tube; 112. Countersunk sleeve; 113. Circular clamping plate; 114. Bayonet; 115. Support plate; 116. Arc-shaped guide plate; 12. Connector; 121. Insert tube; 122. Conical clamping sleeve; 123. Frustum-shaped limiting sleeve; 124. Tensioning notch; 125. Snap-fit ​​notch; 2. Roller brush; 3. Bracket assembly; 4. Handle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1 to 5 The figure shows an integrated dual-axis roller brush core assembly with no dead angle. The support structure 1 includes a support member 11 and two plug-in members 12.

[0035] The support member 11 includes a mandrel tube 111, both ends of which are fixedly connected to countersunk sleeves 112. Several annularly distributed support plates 115 are fixedly arranged on the outer side wall of the mandrel tube 111, and several circular clamping plates 113 are fixedly arranged on the outer circular side wall of the mandrel tube 111 along its axial direction. The support plates 115 and the circular clamping plates 113 are integrally formed.

[0036] The two connectors 12 are rotatably connected to both ends of the support member 11 for fixed connection with the roller brush bracket assembly 3.

[0037] Installation principle: Install one connector 12 onto the horizontal section of the bracket assembly 3, then sleeve the mandrel tube 111 onto the outside of connector 12. Connector 12 will engage and be fixed onto the horizontal section of the bracket assembly 3. Subsequently, install the other connector 12 onto the horizontal section of the bracket assembly, onto the other end of the mandrel tube 111, ensuring it engages and is fixed onto the other horizontal section of the bracket assembly 3. At this point, support member 11 is securely installed on the bracket assembly 3, and roller brush 2 is sleeved on the outside of support member 11. Through the support of support member 11, roller brush 2 is able to withstand the stresses of use. During the process, it can maintain a stable shape. The connector 12 can be firmly engaged with the bracket assembly 3, which can prevent horizontal movement. The support 11 can rotate steadily around the two support members 11. The outer circle 121 of the connector cooperates with the inner wall of the mandrel tube 111 to form rotation, which effectively limits the axial movement of the roller brush 2 in the horizontal section of the bracket assembly 3. This makes the rotation of the roller brush 2 more stable during operation, ensuring the coating quality. It also eliminates the noise caused by the direct rotation of the horizontal section of the bracket assembly 3 and the mandrel tube 111 in the past, and improves the user's comfort experience.

[0038] Please see Figure 3 The support member 11 has several annular arc-shaped guide plates 116 fixedly arranged on the outer wall near the insertion end. These arc-shaped guide plates 116 have a specific curvature design. Their function is to guide and position the roller brush 2 when it is fitted onto the support member 11, so that the roller brush 2 can be fitted onto the support member 11 more smoothly and accurately, reducing jamming and deviation during the installation process and improving installation efficiency.

[0039] Please refer to Figure 3 , Figure 4 and Figure 5 The outer side wall of the tail end of the support plate 115 is provided with evenly arranged serrations. These serrations are designed with a unique function. After being inserted and installed with the roller brush 2, the inner circle forms a friction force, making the connection between the two tighter and improving the reliability of the overall structure.

[0040] Please refer to Figure 3 , Figure 4 and Figure 5 The connector 12 includes a tube 121, with its insertion end fixedly connected to a tapered retaining sleeve 122 and its tail end fixedly connected to a frustum-shaped limiting sleeve 123. The tapered retaining sleeve 122 has two symmetrically arranged snap-fit ​​notches 125 on its outer wall, and the frustum-shaped limiting sleeve 123 has a tensioning notch 124 on its outer wall. The tube 121 is inserted into the countersunk sleeve 112.

[0041] At this time, the tapered sleeve 122, through the elastic deformation generated by the snap-fit ​​notch 125 on its outer wall, can smoothly snap into the corresponding snap-fit ​​position inside the countersunk sleeve 112, and can snap into the support member 11. The tensioning notch 124 on the outer wall of the frustum limiting sleeve 123 will generate a certain elasticity due to the force after the connector 12 is inserted into the countersunk sleeve 112, so that the frustum limiting sleeve 123 and the countersunk sleeve 112 cooperate. After insertion, it can support the support member 11 to rotate stably, effectively preventing the connector 12 from loosening and falling off due to vibration or other reasons during the operation of the roller brush 2, and ensuring the stability and reliability of the entire roller brush accessory structure.

[0042] See Figure 3 Each connector 12 has a locking slot 114 at the position of the countersunk sleeve 112. The design of the locking slot 114 is ingenious; its shape is adapted to a specific part of the connector 12. When the connector 12 is inserted into the countersunk sleeve 112, the locking slot 114 can cooperate with the corresponding structure on the connector 12 to form a limiting mechanism, making the rotation of the two more stable after connection and less prone to shaking or separation. At the same time, the locking slot 114 can be exposed in the head area of ​​the connector 12, and the locking slot 114 can provide a clear sense of not being in the correct position. If no sense of hesitation is felt, it means that the connector 12 is not fully inserted and can be adjusted in time to avoid affecting the stability and performance of the entire roller brush 2 due to improper installation, further improving the accuracy and convenience of installation.

[0043] See Figure 2 and Figure 3 The design of the mandrel tube 111 being longer than half the length of the roller brush 2 allows it to provide more stable and durable support within the roller brush 2. During operation, the roller brush 2 needs to withstand significant pressure and friction. If the mandrel tube 111 is too short, it will be unable to effectively distribute these forces, thus affecting the overall stability and lifespan of the roller brush 2. The mandrel tube 111 being longer than half the length of the roller brush 2 ensures that it fully exerts its supporting and stabilizing function at all stages of the roller brush 2's operation, effectively extending its lifespan and improving its working efficiency. Both the support component 11 and the connector 12 are made of plastic. Plastic is lightweight, low-cost, and corrosion-resistant, making transportation and installation easier and reducing labor intensity. Furthermore, plastic's high plasticity allows it to be easily processed into various complex shapes to meet the design requirements of the support component 11 and the connector 12, ensuring their functional integrity and reliability.

[0044] As a second aspect of this utility model, an integrated dual-axis roller brush with no dead angles is provided, comprising:

[0045] Bracket assembly 3;

[0046] As described above, the two connectors 12 of the integrated dual-axis roller brush core assembly with no dead angle are respectively fixedly connected to the horizontal section of the bracket assembly 3.

[0047] Roller brush 2, which is sleeved on the outside of the support member 11.

[0048] As an optional implementation, the tapered sleeve 122 of the connector 12 forms a fixed engagement with the horizontal section of the bracket assembly 3 through its snap-fit ​​notch 125.

[0049] As an optional implementation, the support member 11 is rotatably engaged with the corresponding plug-in member 12 through the countersunk sleeves 112 at both ends, so that the support member 11 and the roller brush 2 sleeved on it can rotate relative to the fixed bracket assembly 3.

[0050] As an optional implementation, the tail end of the bracket assembly 3 is connected to a handle 4.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated, dead-angle-free dual-axis roller brush inner core assembly, comprising a support structure (1), characterized in that, The support structure (1) includes a support member (11) and two plug-in members (12). The support member (11) includes a mandrel tube (111), both ends of which are fixedly connected to countersunk sleeves (112). Several annularly distributed support plates (115) are fixedly arranged on the outer sidewall of the mandrel tube (111). Several circular clamping plates (113) are fixedly arranged on the outer circular sidewall of the mandrel tube (111) along its axial direction. The support plates (115) and the circular clamping plates (113) are integrally formed. The two connectors (12) are rotatably connected to the two ends of the support (11) for fixed connection with the roller brush bracket assembly (3).

2. The integrated dual-axis roller brush core assembly with no dead angle as described in claim 1, characterized in that: The support member (11) has several annularly arranged arc-shaped guide plates (116) fixedly installed near the outer wall of the insertion end.

3. The integrated dual-axis roller brush core assembly with no dead angle as described in claim 1, characterized in that: The outer wall of the tail end of the support plate (115) is provided with evenly spaced serrations.

4. The integrated dual-axis roller brush core assembly with no dead angle as described in claim 1, characterized in that: The connector (12) includes a tube (121), the insertion end of which is fixedly connected to a tapered sleeve tube (122), and the tail end is fixedly connected to a frustum limiting sleeve (123). The outer side wall of the tapered sleeve tube (122) has two symmetrically arranged snap-fit ​​notches (125), and the outer side wall of the frustum limiting sleeve (123) has a tensioning notch (124). The tube (121) is inserted into the sink sleeve tube (112).

5. The integrated dual-axis roller brush core assembly with no dead angle as described in claim 4, characterized in that: The connector (12) is provided with a bayonet (114) at the position of the countersunk sleeve (112).

6. The integrated dual-axis roller brush core assembly with no dead angle as described in claim 4, characterized in that: The length of the mandrel tube (111) is greater than half the length of the roller brush (2).

7. A one-piece, no-dead-angle dual-axis roller brush, characterized in that, include: Bracket assembly (3); The two plug-in parts (12) of the integrated dual-axis roller brush core assembly with no dead angle as described in any one of claims 1 to 6 are respectively fixedly connected to the horizontal section of the bracket assembly (3); Roller brush (2), which is sleeved on the outside of the support member (11).

8. The integrated dual-axis roller brush with no dead angle as described in claim 7, characterized in that, The tapered sleeve (122) of the connector (12) forms a fixed engagement with the horizontal section of the bracket assembly (3) through its snap-fit ​​notch (125).

9. The integrated dual-axis roller brush with no dead angle as described in claim 7, characterized in that, The support member (11) is rotatably engaged with the corresponding plug-in member (12) through the countersunk sleeves (112) at both ends, so that the support member (11) and the roller brush (2) sleeved on it can rotate relative to the fixed bracket assembly (3).

10. The integrated dual-axis roller brush with no dead angle as described in claim 7, characterized in that, The tail end of the bracket assembly (3) is connected to a handle (4).

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