Brush head mounting structure and electric cleaning brush

Abstract

The utility model relates to the field of electric tools, and particularly discloses a brush head mounting structure and an electric cleaning brush, the brush head mounting structure comprises a connector and a brush head main body assembled and connected with the connector, and a brush head is mounted on one side of the brush head main body. Wherein the brush head main body is provided with a mounting part, the connector is connected with the mounting part through a limiting piece and a positioning piece which are arranged in a layered manner, the mounting part is provided with a mounting opening, the connector comprises an inserting part and a positioning part, and when the brush head main body is connected with the connector, the inserting part firstly extends into the mounting opening of the mounting part and forms circumferential positioning with the mounting part through the limiting piece; when the inserting stroke of the inserting part in the mounting opening is gradually expanded, the positioning piece is close to the mounting part and completes locking; through the arrangement of the buckles and the common clamping groove, the installation of the brush head main body can be realized through blind insertion, in addition, through the arrangement of the limiting piece, the brush head main body after installation can be prevented from rotating relative to the connector, and the connection between the brush head main body and the connector is firmer.

Description

Technical Field

[0001] This application relates to the field of power tools, and in particular to a brush head mounting structure and an electric cleaning brush. Background Technology

[0002] Currently, there are many types of dirt that need to be cleaned in homes, adhering to various material surfaces and distributed in many locations, making cleaning time-consuming and labor-intensive. To save manpower, many people choose to use electric cleaning brushes to assist in the work. To facilitate the replacement or cleaning of brush heads, some electric cleaning brushes mainly use clips to connect the brush head to the connector. Based on the understanding of related technologies, when the brush head and the connector are connected, if independent slots are used, there is a problem that the clips and slots are not easy to align. If multiple slots are connected to form a ring slot, after the clips and slots are engaged, the brush head may rotate relative to the connector. When the connector drives the brush head to rotate, the brush head is not easily stressed. Utility Model Content

[0003] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the prior art and provide a brush head mounting structure and an electric cleaning brush.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A brush head mounting structure, comprising:

[0006] Connector;

[0007] The main body of the brush head has a brush head on one side;

[0008] The brush head body has a mounting part, and the connector is connected to the mounting part through layered limiting and positioning parts;

[0009] The connector includes a plug-in part and a positioning part. When the brush head body is connected to the connector, the plug-in part extends into the mounting port of the mounting part and forms a circumferential limit by cooperating with the mounting part through the limiting member.

[0010] During the insertion stroke of the connector within the mounting port, as the insertion depth increases, the positioning element gradually approaches the mounting portion and locks in place to achieve axial positioning.

[0011] Furthermore, in the inner wall of the mounting part and the circumferential surface of the connector, one is provided with a plurality of limiting protrusions, and the other is provided with a limiting opening that cooperates with the limiting protrusions. The limiting protrusions and the limiting opening cooperate to achieve circumferential limiting.

[0012] Furthermore, in the mounting part and the connector, one is provided with a buckle and the other is provided with a slot. The brush head body and the connector are axially positioned by the engagement of the buckle and the slot.

[0013] Furthermore, the limiting member is disposed on the plug-in portion, the positioning member is disposed on the positioning portion, and the plug-in portion and the positioning portion form different segmented regions axially distributed on the connector head, so that the limiting member and the positioning member are arranged in layers on the connector head.

[0014] Furthermore, the peripheral surface of the insertion part is a conical surface, and the diameter of the head and the diameter of the tail of the insertion part are both smaller than the diameter of the mounting port, so that the positioning member gradually approaches the mounting part through the guidance of the conical surface during the insertion process.

[0015] Furthermore, the number of the buckles is multiple, and the number of the slots is the same as the number of the buckles.

[0016] Furthermore, there are multiple buckles, and the multiple buckle slots extend circumferentially on the inner wall of the mounting port and connect with each other to form a common buckle slot for multiple buckles to engage together.

[0017] Furthermore, the buckle includes a buckle body fixed to the connector and a protrusion on one side of the buckle body. The protrusion protrudes outward relative to the circumference of the connector. When the brush head body and the connector are connected, the protrusion engages in the slot.

[0018] Furthermore, a guide surface is provided at the port of the mounting port. When the brush head body and the connector are connected, the protrusion transitions from the guide surface to the inner wall of the mounting port and squeezes the inner wall of the mounting port during insertion to achieve elastic engagement.

[0019] The advantages of the brush head mounting structure provided in this application compared to the prior art are as follows:

[0020] 1. The limiting and positioning components of this application are arranged in layers on the connector head, and multiple slots extend circumferentially on the inner wall of the mounting port and connect with each other to form a common slot. When the brush head body is connected to the connector head, the insertion part first extends into the mounting port of the mounting part and forms a circumferential positioning with the mounting part through the limiting component. As the insertion stroke of the insertion part in the mounting port gradually increases, the positioning component approaches the mounting part and completes locking. This application increases the contact area through the circumferential distribution of multiple buckles and slots (common slots). The brush head body can be installed without aligning the buckles and by blind insertion. Moreover, the setting of the limiting component can prevent the brush head body from rotating relative to the connector head after installation, and the connection between the brush head body and the connector head is more secure.

[0021] 2. The circumference of the connector is tapered, and the diameters of the head and tail of the connector are smaller than the diameter of the mounting port. When the brush head body is connected to the connector, the alignment difficulty can be reduced, enabling "blind operation" installation and improving the user experience. When disassembling, only axial tension needs to be applied, and the buckle can be elastically deformed to disengage from the slot without additional tools, making it easy to replace the brush head.

[0022] Another technical solution adopted in this application is: providing an electric cleaning brush, comprising:

[0023] main body;

[0024] The motor is installed inside the main body;

[0025] The gearbox has its power input end connected to the motor and its power output end connected to the output shaft.

[0026] And the aforementioned brush head mounting structure;

[0027] The connector of the brush head mounting structure is fixedly connected to the end of the output shaft.

[0028] The electric cleaning brush provided in this application, due to the configuration of the aforementioned brush head mounting structure, has the corresponding technical effects of the aforementioned brush head mounting structure. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this application.

[0031] Figure 2 This is an assembly diagram of this application.

[0032] Figure 3 This is a front view of the present application.

[0033] Figure 4 for Figure 3 A schematic diagram of the cross section along line AA.

[0034] Figure 5 for Figure 3 A schematic diagram of the cross section along line BB.

[0035] Figure 6 This is a schematic diagram of the structure of the electric cleaning brush of this application. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Example 1

[0038] Reference Figures 1 to 5 A brush head mounting structure 100 includes a connector 10 and a brush head body 20 assembled and connected to the connector 10, with a brush head 30 on one side of the brush head body 20.

[0039] The brush head body 20 is provided with an installation part 40. The connector 10 is connected to the installation part 40 through layered limiting members and positioning members. The installation part 40 has an installation port 40a. The connector 10 includes a plug-in part 10a and a positioning part 10b. The limiting member is provided on the plug-in part 10a and the positioning member is provided on the positioning part 10b. The plug-in part 10a and the positioning part 10b form different segmented areas axially distributed on the connector 10. The limiting member and the positioning member are arranged in layers on the connector.

[0040] When the brush head body 20 is connected to the connector 10, the insertion part 10a first extends into the mounting port 40a of the mounting part 40, and forms a circumferential limit with the mounting part 40 through the limiting member;

[0041] As the insertion stroke of the plug part 10a within the mounting port 40a gradually increases, that is, during the insertion stroke of the plug part 10a within the mounting port 40a, as the insertion depth increases, the positioning member approaches the mounting part 40 and completes locking.

[0042] In addition, the circumferential surface of the insertion part 10a is a conical surface, and the diameters of the head and tail of the insertion part 10a are smaller than the diameter of the mounting port 40a. Since the head of the connector 10 is much smaller than the diameter of the mounting port 40a, the alignment difficulty can be reduced when the brush head body 20 is connected to the connector 10, enabling "blind operation" installation and improving the user experience. When disassembling, only axial tension needs to be applied, and the positioning part can be elastically deformed to disengage from the slot without additional tools, making it easy to replace the brush head 30.

[0043] Specifically, one of the mounting part 40 and the connector 10 is provided with a buckle 50, and the other of the mounting part 40 and the connector 10 is provided with a slot 60. The brush head body 20 and the connector 10 are fixed by the mutual engagement of the buckle 50 and the slot 60. The buckle 50 is the positioning component mentioned above.

[0044] In this embodiment, the buckle 50 is installed on the connector 10, the mounting part 40 is provided with a mounting port 40a, and the slot 60 is opened on the inner wall of the mounting port 40a. When the brush head body 20 is connected to the connector 10, the connector 10 extends into the mounting port 40a, and the buckle 50 and the slot 60 engage.

[0045] In some embodiments, the number of snap fasteners 50 is multiple, and the number of slots 60 is the same as the number of snap fasteners 50.

[0046] In other embodiments, there are multiple snap fasteners 50, and multiple slots 60 extend circumferentially on the inner wall of the mounting port 40a and connect with each other to form a shared slot. These multiple slots extend circumferentially on the inner wall of the mounting port 40a and connect to form an annular channel, allowing the snap fasteners 50 to be inserted and slid at any angle for rapid alignment. The annular slot disperses the stress of individual snap fasteners 50, avoiding localized concentrated wear (such as the "first snap breakage" problem that easily occurs with traditional discrete slots). The snap fasteners do not need to be strictly aligned with any single slot, reducing assembly precision requirements. Furthermore, the circumferential distribution of multiple snap fasteners 50 and slots 60 (independent or shared slots; in this embodiment, a shared slot is preferred) increases the contact area, making the connection between the brush head body 20 and the connector 10 more secure and preventing loosening or detachment due to uneven stress during use.

[0047] Furthermore, the buckle 50 includes a buckle body 50a mounted on the connector 10, and a protrusion 50b on one side of the buckle body 50a. The protrusion 50b protrudes outward relative to the circumference of the connector 10. When the brush head body 20 and the connector 10 are connected, the protrusion 50b engages within the slot 60. Since the slot 60 is a shared slot, the buckle 50 does not need to be aligned with the slot 60; the protrusion 50b on the buckle 50 can be directly pressed into the slot 60, making installation convenient.

[0048] Among them, the diameter of the envelope circle formed by the outer edges of the multiple protrusions 50b is larger than the diameter of the mounting port 40a. When the brush head body 20 and the connector 10 are connected, the protrusions 50b press against the inner wall of the mounting port 40a, causing the buckle body 50a to undergo elastic deformation. The buckle body 50a can be engaged or released through elastic deformation.

[0049] Furthermore, one of the inner wall of the mounting port 40a and the peripheral surface of the connector 10 is provided with a limiting protrusion 40b, and the other is provided with a limiting opening 70 that mates with the limiting protrusion 40b. The limiting protrusion 40b and the limiting opening 70 are the limiting members mentioned above. The limiting members can be provided on the peripheral surface of the insertion part 10a or on the inner wall of the mounting port 40a. Specifically, in this embodiment, there are multiple limiting protrusions 40b, which are provided on the inner wall of the mounting part 40, and the limiting opening 70 is provided on the peripheral surface of the connector 10. When the brush head body 20 and the connector 10 are connected, the connector 10 first extends into the mounting port 40a. While pressing the brush head body 20 and rotating it, when the limiting port 70 on the circumference of the connector 10 aligns with the limiting protrusion 40b on the inner wall of the mounting port 40a, the limiting protrusion 40b will cooperate with the limiting port 70 to limit each other. When the brush head body 20 is pressed further, the buckle 50 on the connector 10 will undergo elastic deformation and engage with the slot 60 on the inner wall of the mounting port 40a, thereby realizing the quick connection between the brush head body 20 and the connector 10.

[0050] It should be noted that in this embodiment, the height of the limiting protrusion 40b is lower than the depth of the mounting port 40a. The advantage of this design is that the top of the limiting protrusion 40b and the port of the mounting port 40a form a space that can accommodate the connector 10. When the brush head body 20 and the connector 10 are connected, the end of the connector 10 can be smoothly inserted into the mounting port 40a. When the brush head body 20 is rotated at a small angle, the limiting protrusion 40b on the brush head body 20 can be aligned with the limiting port 70 on the circumference of the connector 10. After pressing the brush head body 20, the buckle 50 on the connector 10 will undergo elastic deformation and engage with the groove 60 on the inner wall of the mounting port 40a.

[0051] Furthermore, a guide surface 40c is provided at the port of the mounting port 40a. When the brush head body 20 and the connector 10 are connected, the protrusion 50b slides smoothly into the mounting port 40a through the guide surface 40c and squeezes the inner wall of the mounting port 40a, reducing the difficulty of alignment, realizing "blind operation" installation, and improving the user experience. When disassembling, only axial tension needs to be applied, and the buckle 50 can be elastically deformed to disengage from the slot 60 without additional tools, making it easy to replace the brush head 30.

[0052] In summary, the connection between the brush head body 20 and the connector 10 includes the following stages:

[0053] Pre-alignment: Guided by the guide surface 40c, the insertion part 10a of the connector 10 extends into the mounting port 40a, and the limiting protrusion 40b contacts the edge of the limiting port 70;

[0054] Precise positioning: Rotate the brush head body 20 until the limiting protrusion 40b slides into the limiting port 70;

[0055] Tactile feedback: A distinct "click" indicates that the protrusion 50b of the buckle 50 is engaged in the slot 60.

[0056] After the brush head body 20 and the connector 10 are connected, a dual locking mechanism is achieved: the first locking is the elastic engagement of the buckle 50 and the slot 60; the second locking is the mechanical limiting of the limiting protrusion 40b and the limiting port 70; the dual locking ensures that the brush head body 20 and the connector 10 do not rotate relative to each other during operation, thus ensuring the stability of the connection between the two.

[0057] This application increases the contact area by circumferentially distributing multiple buckles 50 and slots 60 (multiple slots extend circumferentially on the inner wall of the mounting port and connect with each other to form a common slot), so that the brush head body 20 can be installed without aligning the buckles 50 and can be blindly inserted. Moreover, by setting the limiting component (limiting protrusion 40b), the brush head body 20 can be prevented from rotating relative to the connector 10 after installation, and the connection between the brush head body 20 and the connector 10 is more secure.

[0058] Example 2

[0059] Reference Figure 6 An electric cleaning brush 200 includes a main body 210, a motor installed inside the main body 210, a power output end of the motor connected to a gearbox, a power output end of the gearbox connected to an output shaft, and an end of the output shaft connected to a connector 10 of the brush head mounting structure 100 in the above embodiment. When the electric cleaning brush 200 is in use, after the user presses the switch, the power supply (such as a battery or external power supply) supplies power to the motor, and the motor rotor starts to rotate at high speed. The rotational power of the motor is transmitted through a multi-stage gear transmission in the gearbox. The output shaft of the gearbox is rigidly connected to the connector 10 through a keyway, thread, or snap-fit ​​structure to ensure no relative slippage. The connector 10 is fixed to the brush head 30 (such as a nylon brush or wire brush), driving the brush head 30 to rotate at the same speed. The rotating brush head 30, in conjunction with a cleaning agent, can remove dirt from the surface or crevices of items.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A brush head mounting structure, comprising: Connector; The main body of the brush head has a brush head on one side; The feature is that the brush head body has a mounting part, and the connector is connected to the mounting part through a layered arrangement of limiting and positioning parts; The connector includes a plug-in part and a positioning part. When the brush head body is connected to the connector, the plug-in part extends into the mounting port of the mounting part and forms a circumferential limit by cooperating with the mounting part through the limiting member. During the insertion stroke of the connector within the mounting port, as the insertion depth increases, the positioning element gradually approaches the mounting portion and locks in place to achieve axial positioning.

2. The brush head mounting structure according to claim 1, characterized in that, The inner wall of the mounting part and the circumferential surface of the connector are provided with a plurality of limiting protrusions on one side and a limiting opening that cooperates with the limiting protrusions on the other side. The limiting protrusions and the limiting opening cooperate to achieve circumferential limiting.

3. The brush head mounting structure according to claim 1, characterized in that, The mounting part and the connector are provided with a buckle and a slot, respectively. The brush head body and the connector are axially positioned by the engagement of the buckle and the slot.

4. The brush head mounting structure according to claim 1, characterized in that, The limiting member is disposed on the plug-in part, and the positioning member is disposed on the positioning part. The plug-in part and the positioning part form different segmented areas axially distributed on the connector head, so that the limiting member and the positioning member are arranged in layers on the connector head.

5. The brush head mounting structure according to claim 4, characterized in that, The peripheral surface of the plug-in portion is tapered, and the diameters of both the head and tail of the plug-in portion are smaller than the diameter of the mounting opening, so that the positioning element gradually approaches the mounting portion during insertion by being guided by the tapered surface.

6. The brush head mounting structure according to claim 3, characterized in that, The number of buckles is multiple, and the number of slots is the same as the number of buckles.

7. The brush head mounting structure according to claim 3, characterized in that, The number of the buckles is multiple, and the multiple buckle slots extend circumferentially on the inner wall of the mounting port and connect with each other to form a common buckle slot for multiple buckles to engage together.

8. The brush head mounting structure according to claim 3, characterized in that, The buckle includes a buckle body fixed to the connector and a protrusion on one side of the buckle body. The protrusion protrudes outward relative to the circumference of the connector. When the brush head body and the connector are connected, the protrusion engages in the slot.

9. The brush head mounting structure according to claim 8, characterized in that, The mounting port has a guide surface. When the brush head body and the connector are connected, the protrusion transitions from the guide surface to the inner wall of the mounting port and squeezes the inner wall of the mounting port during insertion to achieve elastic engagement.

10. An electric cleaning brush, characterized in that, include: main body; The motor is installed inside the main body; The gearbox has its power input end connected to the motor and its power output end connected to the output shaft. The brush head mounting structure according to any one of claims 1-9; The connector of the brush head mounting structure is fixedly connected to the end of the output shaft.

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