Support limiting structure and electric toothbrush
By designing the bracket limit structure, including the limit slots and clamping parts of the handle housing and the bracket body, the problem of difficult disassembly of the body bracket and the handle housing in the electric toothbrush is solved, and easier maintenance and higher Assembly accuracy.
Patent Information
- Application Number
- CN202420886524.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-23
AI Technical Summary
In existing electric toothbrushes, it is difficult to disassemble the body bracket and the handle housing, resulting in difficulty in maintenance.
A bracket limiting structure is designed, including a handle housing and a bracket body. By setting a first limiting groove on the inner peripheral wall of the handle housing and setting a first snap-in arm of the bracket body, the shaft is realized. Toward the limit position; an extension is provided on the latch arm to form a gap to prevent the first latch and the first latch groove from being latched by the fixture, thereby realizing the removal of the bracket body.
The difficulty of disassembly between the bracket body and the handle housing is reduced, which is conducive to maintenance, and the assembly accuracy and stability are improved through the design of the second clamping part and the second limiting slot.
Smart Images
Figure CN222444399U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of daily necessities, in particular to a bracket limiting structure and an electric toothbrush. Background Art
[0002] An electric toothbrush cleans the oral cavity by rapidly rotating or vibrating the motor to produce high-frequency vibrations in the brush head.
[0003] In the existing electric toothbrush, the motor is usually arranged on the body bracket, and the body bracket is then integrally built into the handle housing, and the motor is relatively fixed in the handle housing through the limiting effect of the body bracket. However, after the electric toothbrush is assembled, it is difficult to disassemble the body bracket and the handle housing, which is not conducive to maintenance. Utility Model Content
[0004] In view of this, the utility model provides a bracket limiting structure and an electric toothbrush to solve the problem that the body bracket and the handle shell of the existing electric toothbrush are difficult to disassemble.
[0005] In a first aspect, the utility model provides a bracket limiting structure, comprising:
[0006] The handle housing has an inner peripheral wall enclosing a mounting cavity; an insertion port communicating with the mounting cavity is provided at one axial end of the handle housing;
[0007] A first limiting groove is provided on the inner peripheral wall of the handle housing, and the first limiting groove is arranged at one end of the handle housing close to the insertion opening along the axial direction;
[0008] The bracket body is suitable for being inserted into the installation cavity through the insertion port, and a clamping arm is provided at one end of the bracket body close to the insertion port in the axial direction; a first clamping portion is provided on the clamping arm, and the first clamping portion is suitable for being clamped with the first limiting groove;
[0009] An extension portion is provided on one end of the clamping arm axially close to the insertion port, and an escape gap is formed radially between the extension portion and the inner peripheral wall of the handle shell. The escape gap is suitable for a jig to extend into so that the first clamping portion and the first limiting groove can be disengaged through the jig.
[0010] Beneficial effects: The bracket limiting structure provided by the utility model mainly includes a handle shell and a bracket body, a first limiting groove is opened on the inner circumferential wall of the handle shell, and a clamping arm is provided at one end of the bracket body axially close to the insertion port, and a first clamping part is provided on the clamping arm, and the first clamping part is clamped with the first limiting groove to axially limit the bracket body; by providing an extension part on the end of the clamping arm axially close to the insertion port, an avoidance gap is formed between the extension part and the inner circumferential wall of the handle shell along the radial interval. When disassembling, the jig can be extended into the avoidance gap, and the first clamping part can be lifted by the jig to disengage the first clamping part from the first limiting groove, so that the bracket body can be axially disengaged from the handle shell, thereby reducing the difficulty of disassembly between the bracket body and the handle shell and facilitating maintenance.
[0011] In an optional embodiment, a second clamping portion is radially protruding on the outer circumferential wall of the bracket body, and the second clamping portion is axially extended; a second limiting groove is axially opened on the inner circumferential wall of the handle shell, and the second limiting groove is suitable for guiding and limiting the second clamping portion.
[0012] Beneficial effects: By arranging a second clamping portion on the outer circumferential wall of the bracket body and opening a second limiting groove on the inner circumferential wall of the handle shell, during the assembly process, the second clamping portion slides axially along the second limiting groove to guide the bracket body, which is beneficial to reduce the difficulty of assembly and improve the assembly accuracy; at the same time, the second clamping portion is clamped with the second limiting groove to limit the bracket body circumferentially and prevent the bracket body from rotating in the handle shell.
[0013] In an optional embodiment, a plurality of elastic abutting portions are protruding from the second clamping portion, and the elastic abutting portions are suitable for abutting against the inner wall of the second limiting groove.
[0014] Beneficial effect: By arranging an elastic abutment on the second clamping portion, when the bracket body is assembled into the handle shell, the elastic abutment can be elastically deformed under the squeezing action of the handle shell, so that the bracket body can smoothly enter the installation cavity of the handle shell; when the bracket body is installed in place in the installation cavity, the elastic abutment elastically abuts against the inner wall of the second limiting groove under the action of its own elastic restoring force, thereby avoiding the bracket body from deviating in the installation cavity.
[0015] In an optional embodiment, a first reinforcing rib is provided on the inner circumferential wall of the handle shell, and the first reinforcing rib is provided at one end of the first limiting groove axially away from the insertion port, and each two adjacent first reinforcing ribs are suitable for forming a second limiting groove at intervals along the circumferential direction.
[0016] Beneficial effect: By arranging the first reinforcing rib on the inner circumferential wall of the handle shell, on the one hand, the structural strength of the handle shell itself can be enhanced, and on the other hand, a second limiting groove can be formed along the circumferential interval by every two adjacent first reinforcing ribs, so that the second clamping part can be guided and limited by the second limiting groove, which is conducive to reducing the difficulty of assembly and improving the assembly accuracy.
[0017] In an optional embodiment, a second reinforcing rib is further provided on the inner peripheral wall of the handle housing, the second reinforcing rib is provided at one end of the first limiting groove close to the insertion opening along the axial direction, and the second reinforcing rib is provided in the axial extension direction of the first reinforcing rib;
[0018] The second reinforcing rib and the extending portion are spaced apart in the radial direction to form an escape gap.
[0019] Beneficial effect: by arranging second reinforcing ribs on the inner circumferential wall of the handle shell, each second reinforcing rib is arranged in the axial extension direction of the corresponding first reinforcing rib, and each adjacent two second reinforcing ribs are also spaced apart along the circumferential direction to form a second limiting groove. During the assembly process, the second clamping portion can be guided by the second limiting groove formed by the second reinforcing ribs; at the same time, by arranging the second reinforcing ribs on the inner circumferential wall of the handle shell, an avoidance gap is formed along the radial interval with the extension portion. During disassembly, the jig can be extended into the avoidance gap, and the first clamping portion can be lifted up by the jig with the second reinforcing rib as a fulcrum, so that the first clamping portion is disengaged from the first limiting groove, thereby enhancing the force-bearing performance of the handle shell and avoiding damage to the handle shell.
[0020] In a second aspect, the utility model also provides an electric toothbrush, comprising:
[0021] As the above-mentioned support limiting structure, and
[0022] The tail cover is sealed and connected to the handle housing, and is suitable for sealing the cover insertion opening; the tail cover is provided with a charging socket and a socket;
[0023] The dust cover is provided with a sealing portion and a socket portion, the sealing portion is suitable for sealing the charging socket, and the socket portion is suitable for being inserted into the socket.
[0024] Beneficial effects: First, the electric toothbrush in this solution includes the above-mentioned bracket limiting structure, so the electric toothbrush in this solution includes all the beneficial effects of the above-mentioned bracket limiting structure. Secondly, by setting a tail cover to be detachably connected with the handle housing, the insertion port is blocked by the tail cover to ensure the sealing inside the handle housing; by setting a blocking part on the dust cover, the charging socket is covered by the blocking part to prevent foreign matter from entering the charging socket; by setting a socket part on the dust cover, and the socket part is connected with the socket through a socket connection, the blocking part can stably cover the charging socket.
[0025] In an optional embodiment, the tail cover is further provided with a receiving groove connected to the socket, and the receiving groove is suitable for receiving the socket;
[0026] A partition piece is arranged in the receiving groove, which is suitable for dividing the receiving groove into a movable cavity and a sealing cavity. The movable cavity is suitable for being connected with the socket, the socket part is suitable for axial movement in the movable cavity, and the sealing cavity is suitable for glue filling and sealing.
[0027] Beneficial effect: By arranging a partition sheet in the accommodating groove, the accommodating groove is divided into a movable cavity and a sealing cavity by the partition sheet, so that the socket part can move axially in the movable cavity, and the sealing cavity is sealed by injecting glue into the sealing cavity, thereby ensuring the sealing of the installation cavity of the handle shell.
[0028] In an optional embodiment, the electric toothbrush further includes a single-chip microcomputer module, and the single-chip microcomputer module is arranged on the outer peripheral wall of the bracket body;
[0029] A positioning column is also provided on the outer peripheral wall of the bracket body, and the positioning column is suitable for positioning the single chip microcomputer module;
[0030] Buckles are also provided on the outer peripheral wall of the bracket body. The buckles are arranged on both sides of the single-chip microcomputer module in the width direction. The buckles are suitable for fixing the single-chip microcomputer module.
[0031] Beneficial effect: By setting positioning columns and buckles on the bracket body, the single-chip microcomputer module is positioned on the bracket body through the positioning columns during the assembly process, and then the buckles are engaged with the two sides of the single-chip microcomputer module in the width direction, so as to fix the single-chip microcomputer module and facilitate disassembly, assembly and maintenance.
[0032] In an optional embodiment, the electric toothbrush further includes a brushless motor, which is electrically connected to the single-chip microcomputer module; the single-chip microcomputer module is suitable for driving the brushless motor to output a circumferential swing amplitude and vibration frequency of any angle.
[0033] Beneficial effect: The brushless motor is driven by the single-chip microcomputer module, so that the brushless motor drives the toothbrush head to achieve circumferential swing and vibration frequency at any angle.
[0034] In an optional embodiment, an electrical connection piece is further provided on the bracket body, one end of which radially extends from the inner peripheral wall of the bracket body to the outer peripheral wall of the bracket body and is welded and fixed to the single-chip computer module.
[0035] Beneficial effect: By arranging an electrical connecting plate on the bracket body, which is directly welded to the single-chip computer module through the electrical connecting plate, the male and female sockets and the connecting wire harness are omitted, which is beneficial to improving the space utilization in the installation cavity of the handle shell and optimizing the overall structure of the electric toothbrush. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0037] Figure 1 This is a schematic diagram of the assembly of a bracket limiting structure according to an embodiment of the utility model;
[0038] Figure 2 for Figure 1 A schematic cross-sectional view of the handle housing shown;
[0039] Figure 3 for Figure 1 A local enlarged schematic diagram of the middle A;
[0040] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB section;
[0041] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of the CC section;
[0042] Figure 6 for Figure 1 A partial enlarged schematic diagram of point D in the middle;
[0043] Figure 7 A schematic diagram of the three-dimensional structure of a bracket body of a bracket limiting structure according to an embodiment of the utility model;
[0044] Figure 8 for Figure 7 A partial enlarged schematic diagram of point E in the middle;
[0045] Fig. 9 It is a schematic diagram of the exploded structure of a handle housing, a tail cover and a dust cover of an electric toothbrush according to an embodiment of the utility model;
[0046] Fig.10 This is a schematic diagram of assembling a tail cover and a dust cover of an electric toothbrush according to an embodiment of the utility model;
[0047] Fig.11 The present invention is a three-dimensional structural schematic diagram of a bracket body, a single-chip microcomputer module and a brushless motor of an electric toothbrush according to an embodiment of the present invention.
[0048] Description of reference numerals:
[0049] 10. handle housing; 101. mounting cavity; 102. insertion port; 103. first limiting groove; 104. second limiting groove; 11. first reinforcing rib; 12. second reinforcing rib;
[0050] 20. bracket body; 21. clamping arm; 211. first clamping portion; 212. extension portion; 213. avoidance gap; 22. second clamping portion; 221. elastic abutment portion; 23. positioning column; 24. buckle; 25. electrical connection sheet;
[0051] 30, tail cover; 301, charging socket; 302, socket; 303, receiving groove; 3031, movable cavity; 3032, sealing cavity; 31, partition piece;
[0052] 40. dust cover; 41. sealing part; 42. socket part;
[0053] 50. Single chip microcomputer module;
[0054] 60. Brushless motor. DETAILED DESCRIPTION
[0055] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0056] Combine the following Figures 1 to 11 , describing an embodiment of the utility model.
[0057] According to an embodiment of the present utility model, on the one hand, a bracket limiting structure is provided, comprising:
[0058] Handle housing 10, see Figure 2 As shown, the inner peripheral wall thereof encloses a mounting cavity 101; an insertion opening 102 communicating with the mounting cavity 101 is provided at one axial end of the handle housing 10;
[0059] Still see Figure 2 As shown, a first limiting groove 103 is formed on the inner peripheral wall of the handle housing 10, and the first limiting groove 103 is arranged at one end of the handle housing 10 close to the insertion opening 102 along the axial direction;
[0060] The bracket body 20 is suitable for being inserted into the mounting cavity 101 through the insertion port 102. Figure 1 and Figure 3As shown, a clamping arm 21 is provided at one end of the bracket body 20 close to the insertion port 102 in the axial direction; a first clamping portion 211 is provided on the clamping arm 21, and the first clamping portion 211 is suitable for clamping with the first limiting groove 103;
[0061] See also Figure 3 As shown, an extension portion 212 is provided on one end of the clamping arm 21 axially close to the insertion port 102, and an avoidance gap 213 is formed radially between the extension portion 212 and the inner peripheral wall of the handle housing 10. The avoidance gap 213 is suitable for a jig to extend into so that the first clamping portion 211 can be disengaged from the first limiting groove 103 through the jig.
[0062] The bracket limiting structure provided by the utility model mainly includes a handle shell 10 and a bracket body 20. A first limiting groove 103 is provided on the inner peripheral wall of the handle shell 10. A clamping arm 21 is provided at one end of the bracket body 20 close to the insertion port 102 along the axial direction. A first clamping portion 211 is provided on the clamping arm 21. The first clamping portion 211 is clamped with the first limiting groove 103 to axially limit the bracket body 20. An extension portion 212 is provided at one end, so that an avoidance gap 213 is formed between the extension portion 212 and the inner peripheral wall of the handle shell 10 along the radial interval. During disassembly, the jig can be extended into the avoidance gap 213, and the first clamping portion 211 can be lifted by the jig to disengage the first clamping portion 211 from the first limiting groove 103, so that the bracket body 20 can be axially disengaged from the handle shell 10, thereby reducing the difficulty of disassembly between the bracket body 20 and the handle shell 10 and facilitating maintenance.
[0063] In some embodiments, please combine Figure 4 , Figure 7 and Figure 8 As shown, a second clamping portion 22 is radially protruding on the outer peripheral wall of the bracket body 20, and the second clamping portion 22 is axially extended; see Figure 5 As shown, a second limiting groove 104 is axially provided on the inner peripheral wall of the handle housing 10. Figure 1 and Figure 4 As shown, the second limiting groove 104 is suitable for guiding and limiting the second clamping portion 22 .
[0064] In this embodiment, a second clamping portion 22 is provided on the outer circumferential wall of the bracket body 20, and a second limiting groove 104 is opened on the inner circumferential wall of the handle shell 10. During the assembly process, the second clamping portion 22 slides axially along the second limiting groove 104 to guide the bracket body 20, which is beneficial to reduce the difficulty of assembly and improve the assembly accuracy. At the same time, the second clamping portion 22 is clamped with the second limiting groove 104 to limit the bracket body 20 circumferentially to prevent the bracket body 20 from rotating in the handle shell 10.
[0065] In some embodiments, please combine Figure 6-Figure 8 As shown, a plurality of elastic abutting portions 221 are protruding from the second clamping portion 22 . The elastic abutting portions 221 have a certain elasticity and are suitable for abutting against the inner wall of the second limiting groove 104 .
[0066] In this embodiment, an elastic abutment portion 221 is provided on the second clamping portion 22, and when the bracket body 20 is assembled into the handle shell 10, the elastic abutment portion 221 can be elastically deformed under the squeezing action of the handle shell 10, so that the bracket body 20 can smoothly enter the installation cavity 101 of the handle shell 10; when the bracket body 20 is installed in place in the installation cavity 101, the elastic abutment portion 221 elastically abuts against the inner wall of the second limiting groove 104 under the action of its own elastic restoring force, thereby preventing the bracket body 20 from being offset in the installation cavity 101.
[0067] In some embodiments, please combine Figure 4 and Figure 5 As shown, a plurality of first reinforcing ribs 11 are arranged on the inner circumferential wall of the handle housing 10. The first reinforcing ribs 11 are integrally formed with the handle housing 10. The first reinforcing ribs 11 are arranged at one end of the first limiting groove 103 axially away from the insertion port 102. Each two adjacent first reinforcing ribs 11 are suitable for forming a second limiting groove 104 at intervals along the circumferential direction.
[0068] In this embodiment, by providing the first reinforcing rib 11 on the inner circumferential wall of the handle housing 10, on the one hand, the structural strength of the handle housing 10 itself can be enhanced, and on the other hand, a second limiting groove 104 can be formed along the circumferential interval by every two adjacent first reinforcing ribs 11, so that the second clamping portion 22 can be guided and limited by the second limiting groove 104, which is beneficial to reduce the difficulty of assembly and improve the assembly accuracy.
[0069] In some embodiments, see Figure 3 As shown, a second reinforcing rib 12 is further provided on the inner peripheral wall of the handle housing 10. The second reinforcing rib 12 is provided at one end of the first limiting groove 103 axially close to the insertion opening 102. The second reinforcing rib 12 is provided in the axial extension direction of the first reinforcing rib 11.
[0070] The second reinforcing rib 12 and the extending portion 212 are spaced apart in the radial direction to form an escape gap 213 .
[0071] In this embodiment, by providing second reinforcing ribs 12 on the inner circumferential wall of the handle shell 10, each second reinforcing rib 12 is provided in the axial extension direction of the corresponding first reinforcing rib 11, and each adjacent second reinforcing rib 12 is also spaced apart along the circumferential direction to form a second limiting groove 104. During the assembly process, the second limiting groove 104 formed by the second reinforcing rib 12 can be used to guide the second clamping portion 22; at the same time, by providing the second reinforcing rib 12 on the inner circumferential wall of the handle shell 10, an avoidance gap 213 is formed radially spaced apart from the extension portion 212. During disassembly, the jig can be extended into the avoidance gap 213, and the first clamping portion 211 can be lifted up by the jig with the second reinforcing rib 12 as a fulcrum, so that the first clamping portion 211 is disengaged from the first limiting groove 103, thereby enhancing the force-bearing performance of the handle shell 10 and avoiding damage to the handle shell 10.
[0072] According to an embodiment of the present utility model, on the other hand, there is also provided an electric toothbrush, comprising:
[0073] As the above-mentioned support limiting structure, and
[0074] Tail cap 30, see Fig. 9 As shown, the tail cover 30 and the handle housing 10 can be sealed and connected via a sealing ring, and the tail cover 30 is detachably arranged at the insertion port 102, and the tail cover 30 is suitable for covering the insertion port 102; the tail cover 30 is provided with a charging socket 301 and a socket 302;
[0075] The dust cover 40 is provided with a sealing portion 41 and a socket portion 42 . The sealing portion 41 is suitable for sealing the charging socket 301 , and the socket portion 42 is suitable for being inserted into the socket 302 .
[0076] Firstly, the electric toothbrush in the present embodiment includes the above-mentioned bracket limiting structure, and therefore, the electric toothbrush in the present embodiment includes all the beneficial effects of the above-mentioned bracket limiting structure.
[0077] Secondly, by providing a tail cover 30 that is detachably connected to the handle housing 10, the insertion port 102 is blocked by the tail cover 30 to ensure the sealing inside the handle housing 10; by providing a sealing portion 41 on the dust cover 40, the charging socket 301 is sealed by the sealing portion 41 to prevent foreign matter from entering the charging socket 301; by providing a socket portion 42 on the dust cover 40, and by the socket portion 42 being socket-connected to the socket 302, it is ensured that the sealing portion 41 stably covers the charging socket 301.
[0078] In some embodiments, see Fig.10As shown, the tail cover 30 is also provided with a receiving groove 303 connected with the socket 302, and the receiving groove 303 is suitable for receiving the socket 42;
[0079] A partition plate 31 is provided in the receiving groove 303, which is suitable for dividing the receiving groove 303 into a movable cavity 3031 and a sealing cavity 3032. The movable cavity 3031 is suitable for being connected with the socket 302, the socket part 42 is suitable for axial movement in the movable cavity 3031, and the sealing cavity 3032 is suitable for glue filling and sealing.
[0080] In this embodiment, a partition plate 31 is provided in the accommodating groove 303 to separate the accommodating groove 303 into a movable cavity 3031 and a sealing cavity 3032, so that the socket portion 42 can move axially in the movable cavity 3031, and the sealing cavity 3032 is sealed by injecting glue into the sealing cavity 3032, thereby ensuring the sealing of the installation cavity 101 of the handle housing 10.
[0081] In some embodiments, see Fig.11 As shown, the electric toothbrush further includes a single chip computer module 50, which is disposed on the outer peripheral wall of the bracket body 20;
[0082] A positioning column 23 is also provided on the outer peripheral wall of the bracket body 20, and a positioning hole (not shown in the figure) corresponding to the positioning column 23 is opened on the single-chip microcomputer module 50. The positioning column 23 is coaxially arranged with the positioning hole, and the positioning column 23 is suitable for positioning the single-chip microcomputer module 50;
[0083] Buckles 24 are also provided on the outer peripheral wall of the bracket body 20 . The buckles 24 are provided on both sides of the single-chip microcomputer module 50 in the width direction. The buckles 24 are suitable for fixing the single-chip microcomputer module 50 .
[0084] In this embodiment, by setting a positioning column 23 and a buckle 24 on the bracket body 20, the microcontroller module 50 is positioned on the bracket body 20 through the positioning column 23 during the assembly process, and then the buckle 24 is engaged with both sides of the width direction of the microcontroller module 50 to fix the microcontroller module 50, which is convenient for disassembly, assembly and maintenance.
[0085] In some embodiments, see Fig.11 As shown, the electric toothbrush also includes a brushless motor 60, which is electrically connected to the single-chip microcomputer module 50; the single-chip microcomputer module 50 is suitable for driving the brushless motor 60 to output a circumferential swing amplitude and vibration frequency of any angle.
[0086] In this embodiment, the brushless motor 60 is driven by the single chip microcomputer module 50, so that the brushless motor 60 drives the toothbrush head to achieve circumferential swing amplitude and vibration frequency at any angle.
[0087] In some embodiments, see Fig.11 As shown, two electrical connecting plates 25 are also provided on the bracket body 20, and the two electrical connecting plates 25 are suitable for being electrically connected to the battery. One end of the electrical connecting plate 25 radially extends from the inner circumferential wall of the bracket body 20 to the outer circumferential wall of the bracket body 20, and is welded and fixed to the single-chip computer module 50.
[0088] In this embodiment, an electrical connecting piece 25 is provided on the bracket body 20, so that the electrical connecting piece 25 is directly welded to the single-chip computer module 50, thereby eliminating the male and female sockets and the connecting wiring harness, which is beneficial to improving the space utilization in the installation cavity 101 of the handle housing 10, and is also beneficial to optimizing the overall structure of the electric toothbrush.
[0089] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. A bracket limiting structure, characterized in that: include: A handle housing (10), the inner peripheral wall of which encloses a mounting cavity (101); an insertion opening (102) communicating with the mounting cavity (101) is provided at one axial end of the handle housing (10); A first limiting groove (103) is provided on the inner peripheral wall of the handle housing (10), and the first limiting groove (103) is arranged at one end of the handle housing (10) close to the insertion opening (102) along the axial direction; The bracket body (20) is suitable for being inserted into the installation cavity (101) via the insertion opening (102); a clamping arm (21) is provided at one end of the bracket body (20) close to the insertion opening (102) in the axial direction; a first clamping portion (211) is provided on the clamping arm (21); the first clamping portion (211) is suitable for being clamped with the first limiting groove (103); An extension portion (212) is provided on one end of the clamping arm (21) axially close to the insertion opening (102), and a radial clearance gap (213) is formed between the extension portion (212) and the inner peripheral wall of the handle housing (10), wherein the clearance gap (213) is suitable for a jig to extend into so as to disengage the first clamping portion (211) from the first limiting groove (103) through the jig.
2. The support limiting structure according to claim 1, characterized in that: A second clamping portion (22) is radially protruding on the outer peripheral wall of the bracket body (20), and the second clamping portion (22) is axially extending; a second limiting groove (104) is axially opened on the inner peripheral wall of the handle shell (10), and the second limiting groove (104) is suitable for guiding and limiting the second clamping portion (22).
3. The support limiting structure according to claim 2, characterized in that: A plurality of elastic abutment portions (221) are protrudingly provided on the second clamping portion (22), and the elastic abutment portions (221) are suitable for abutting against the inner wall of the second limiting groove (104).
4. The support limiting structure according to claim 2 or 3, characterized in that: A first reinforcing rib (11) is provided on the inner peripheral wall of the handle housing (10), and the first reinforcing rib (11) is arranged at one end of the first limiting groove (103) axially away from the insertion opening (102), and every two adjacent first reinforcing ribs (11) are suitable for forming the second limiting groove (104) at intervals along the circumferential direction.
5. The support limiting structure according to claim 4, characterized in that: A second reinforcing rib (12) is also provided on the inner peripheral wall of the handle housing (10), the second reinforcing rib (12) being provided at one end of the first limiting groove (103) close to the insertion opening (102) in the axial direction, and the second reinforcing rib (12) being provided in the axial extension direction of the first reinforcing rib (11); The second reinforcing rib (12) and the extending portion (212) are spaced apart in a radial direction to form the avoidance gap (213).
6. An electric toothbrush, characterized in that: include: A stent limiting structure as described in any one of claims 1 to 5 above, and A tail cover (30) is sealed and connected to the handle housing (10), and the tail cover (30) is suitable for covering the insertion port (102); a charging socket (301) and a socket (302) are provided on the tail cover (30); A dust cover (40), wherein a sealing portion (41) and a socket portion (42) are provided on the dust cover (40), wherein the sealing portion (41) is suitable for sealing the charging socket (301), and the socket portion (42) is suitable for being inserted into the socket (302).
7. The electric toothbrush according to claim 6, characterized in that: The tail cover (30) is also provided with a receiving groove (303) which is in communication with the socket (302), and the receiving groove (303) is suitable for receiving the socket portion (42); A partition plate (31) is provided in the receiving groove (303), and the partition plate (31) is suitable for dividing the receiving groove (303) into a movable cavity (3031) and a sealing cavity (3032). The movable cavity (3031) is suitable for being connected to the socket (302), the socket part (42) is suitable for axial movement in the movable cavity (3031), and the sealing cavity (3032) is suitable for glue injection and sealing.
8. The electric toothbrush according to claim 6 or 7, characterized in that: The electric toothbrush further comprises a single-chip computer module (50), wherein the single-chip computer module (50) is arranged on the outer peripheral wall of the bracket body (20); A positioning column (23) is also provided on the outer peripheral wall of the bracket body (20), and the positioning column (23) is suitable for positioning the single-chip computer module (50); Buckles (24) are also provided on the outer peripheral wall of the bracket body (20), and the buckles (24) are provided on both sides of the single-chip computer module (50) in the width direction, and the buckles (24) are suitable for fixing the single-chip computer module (50).
9. The electric toothbrush according to claim 8, characterized in that: The electric toothbrush further comprises a brushless motor (60), wherein the brushless motor (60) is electrically connected to the single-chip computer module (50); the single-chip computer module (50) is suitable for driving the brushless motor (60) to output a circumferential swing amplitude and vibration frequency at any angle.
10. The electric toothbrush according to claim 8, characterized in that: The bracket body (20) is also provided with an electrical connection piece (25), one end of which radially extends from the inner peripheral wall of the bracket body (20) to the outer peripheral wall of the bracket body (20) and is welded and fixed to the single-chip computer module (50).