Electric toothbrush handle, electric toothbrush

Abstract

This utility model discloses an electric toothbrush handle and an electric toothbrush, relating to the field of electric toothbrush technology. The electric toothbrush handle includes a housing structure and a driving component. The housing structure includes a first housing with a mounting position for mounting the driving component; and a second housing fitted over the first housing. One of the first and second housings has a first protrusion, and the other has a guide groove extending along the extension direction of the housing structure. When the second housing is fitted over the first housing, the first protrusion engages with the guide groove, creating a gap space within the guide groove. The technical solution provided by this utility model can solve the problem of significant vibration in the outer shell.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, and in particular to an electric toothbrush handle and an electric toothbrush. Background Technology

[0002] An electric toothbrush includes a toothbrush handle and a toothbrush head. The toothbrush handle includes an inner shell, an outer shell, a battery installed in the inner shell, and a drive unit. The drive unit is a motor, which drives the toothbrush head to vibrate.

[0003] Existing toothbrush handles generate vibrations when the motor is working, which affect the inner shell. Because the contact area between the inner and outer shells is relatively large, there is a large vibration transmission area between them, resulting in significant vibration in the outer shell. Utility Model Content

[0004] In order to solve the problem of excessive vibration in the outer shell, the purpose of this utility model is to propose an electric toothbrush handle and an electric toothbrush.

[0005] To achieve the above objectives, the electric toothbrush handle proposed in this utility model includes a housing structure and a driving component, wherein the housing structure includes:

[0006] The first housing has a mounting position for mounting a drive component;

[0007] The second housing is fitted over the first housing. One of the first housing and the second housing has a first protrusion, and the other has a guide groove extending along the direction of the housing structure. When the second housing is fitted over the first housing, the first protrusion is inserted into the guide groove so that a gap space is formed in the guide groove.

[0008] In one embodiment, the first housing is provided with a guide portion, the first protrusion is mounted on the guide portion, and when the second housing is sleeved on the outside of the first housing, the guide portion is disposed in the guide groove.

[0009] In one embodiment, a plurality of first protrusions are provided, and the plurality of first protrusions are arranged at intervals along the extension direction of the guide portion.

[0010] In one embodiment, the guide groove includes a first guide section and a second guide section, wherein the first guide section and the second guide section make the guide groove have a stepped structure;

[0011] And / or, the guide groove is disposed in the second housing, the guide groove is constructed between two guide plates, the guide plate is provided with a guide surface facing the first housing, and the first housing is provided with a second protrusion abutting against the guide surface.

[0012] In one embodiment, the housing structure further includes a first positioning structure, the first positioning structure including a first positioning part disposed in one of the first housing and the second housing, and a second positioning part disposed in the other;

[0013] When the second housing is fitted onto the first housing, the first positioning part can abut against the second positioning part to restrict the second housing from moving relative to the first housing in the first direction.

[0014] In one embodiment, the guide groove is provided with an insertion end for inserting the first protrusion, the first positioning part is configured as the end face of the insertion end, the second positioning part is configured as a positioning plate, and when the second housing is sleeved on the first housing, the positioning plate can abut against the end face.

[0015] In one embodiment, the housing structure further includes a second positioning structure. When the second housing is fitted onto the first housing, the second positioning structure restricts the second housing from moving relative to the first housing in a second direction, the first direction being opposite to the second direction.

[0016] In one embodiment, the second positioning structure includes an elastic positioning part and a third positioning part. One of the elastic positioning part and the third positioning part is disposed in the first housing and the other is disposed in the second housing. When the second housing is sleeved on the first housing, the elastic positioning part can be locked with the third positioning part to restrict the second housing from moving relative to the first housing in a second direction.

[0017] Driving the elastic positioning part can release the locking relationship between the elastic positioning part and the third positioning part, and the second housing can move relative to the first housing in a second direction.

[0018] In one embodiment, the guide groove and the first protrusion are configured in two sets, and are arranged in a one-to-one correspondence. The two sets of guide grooves are arranged symmetrically with respect to the housing structure.

[0019] This utility model also proposes an electric toothbrush, including an electric toothbrush handle as described above and a toothbrush head installed on the electric toothbrush handle.

[0020] The technical solution of this utility model adopts the first protrusion and the guide groove to form a gap space in the guide groove. When the vibration generated by the drive component is transmitted to the second housing through the first housing, the guide groove and the first protrusion, the vibration transmission between the first housing and the second housing can be reduced under the action of the gap space, thereby reducing the vibration generated by the second housing and solving the problem of large vibration of the outer shell in the prior art. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the electric toothbrush provided by this utility model;

[0023] Figure 2 for Figure 1 Schematic diagram of an electric toothbrush explosion;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the first shell in the middle;

[0025] Figure 4 for Figure 2 Schematic diagram of the internal structure of the second shell;

[0026] Figure 5 A schematic diagram of the structure of an embodiment of the gap space in the handle of an electric toothbrush provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Shell structure; 110. First shell; 111. Mounting position; 120. Second shell; 130. Guide groove; 131. First guide section; 132. Second guide section; 133. Third guide section; 140. First protrusion; 150. Guide part; 151. First surface; 152. Second surface; 160. Guide plate; 161. Guide surface; 170. First positioning structure; 171. First positioning part; 172. Second positioning part; 180. Second positioning structure; 181. Elastic positioning part; 182. Third positioning part; 190. Gap space; 100a. Second protrusion;

[0029] 200. Electric toothbrush handle; 210. Drive unit; 220. Battery;

[0030] 300. Electric toothbrush; 310. Toothbrush head.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] 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 scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] An electric toothbrush includes a toothbrush handle and a toothbrush head. The toothbrush handle includes an inner shell, an outer shell, a battery installed in the inner shell, and a drive unit. The drive unit is a motor, which drives the toothbrush head to vibrate.

[0036] Existing toothbrush handles generate vibrations when the motor is working, which affect the inner shell. Because the contact area between the inner and outer shells is relatively large, there is a large vibration transmission area between them, resulting in significant vibration in the outer shell.

[0037] This invention proposes a shell structure that can solve the problem of large vibrations in the outer shell.

[0038] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In one embodiment of this utility model, the housing structure 100 includes:

[0039] The first housing 110 has a mounting position 111 for mounting a drive component 210, wherein the drive component 210 is configured as a motor. Further, in some embodiments, the first housing 110 also has another mounting position 111 for mounting a battery. Further, when the first housing 110 has two mounting positions 111, the first housing 110 can be a single structure or a single structure formed by splicing two housings (not shown). When the single structure is formed by splicing two housings, each housing has one mounting position 111. Specifically, the two housings can be spliced ​​together to form a single structure using screws or snap-fit ​​mechanisms. It should be noted that this application does not limit whether the first housing 110 has one or two mounting positions 111.

[0040] The second housing 120, fitted over the first housing 110, is configured as a cylindrical structure. This cylindrical structure can be a single, integral cylindrical structure or a cylindrical structure formed by splicing multiple components (not shown). This application does not limit the specific method used to form the cylindrical structure of the second housing 120. It should be noted that the installation method between the second housing 120 and the first housing 110 differs depending on the cylindrical structure. When the second housing 120 is a single, integral cylindrical structure, the first housing 110 and the second housing 120 are connected by a plug-in connection, allowing the second housing 120 to fit over the first housing 110. When the second housing 120 is a cylindrical structure formed by splicing multiple components, it is disassembled before installation and then spliced ​​over the first housing 110. Once the second housing 120 is assembled over the first housing 110, it is fitted over the first housing 110.

[0041] Furthermore, the first housing 110 is provided with a first guide portion 150, and the second housing 120 is provided with a second guide portion 150. One of the first housing 110 and the second housing 120 is provided with a first protrusion 140, and the other is provided with a guide groove 130 extending along the extension direction of the housing structure 100. When the second housing 120 is fitted onto the first housing 110, the first protrusion 140 is inserted into the guide groove 130, so that a gap space 190 is constructed in the guide groove 130. It should be noted that, regardless of whether the second housing 120 is a single cylindrical structure or a cylindrical structure formed by splicing multiple parts, as long as the second housing 120 is fitted onto the outside of the first housing 110, the first protrusion 140 can be inserted into the guide groove 130. It should be noted that when the second housing 120 adopts a single cylindrical structure, during the process of the second housing 120 being fitted over the first housing 110, the first protrusion 140 can be inserted into the guide groove 130 and slide along the extending direction of the guide groove 130, so as to achieve alignment between the first housing 110 and the second housing 120 during the fitting process, thus achieving aligned installation. It can be understood that when the first protrusion 140 is inserted into the guide groove 130, it also serves the function of alignment during the installation of the first housing 110 and the second housing 120.

[0042] It should be noted that the first protrusion 140 is inserted into the guide groove 130 so that a gap space 190 is constructed in the guide groove 130. At this time, when the vibration generated by the drive member 210 is transmitted to the second housing 120 through the first housing 110, the guide groove 130 and the first protrusion 140, the vibration transmission between the first housing 110 and the second housing 120 can be reduced under the action of the gap space 190, thereby reducing the vibration generated by the second housing 120 and solving the problem of large vibration of the outer shell in the prior art.

[0043] It should be further explained that if the first protrusion 140 adopts a chamber structure (not shown), the chamber structure can be a single chamber structure or a multi-chamber structure; when the first protrusion 140 is inserted into the guide groove 130, the chamber structure in the first protrusion 140 is a gap space 190. Under the action of the chamber structure of the first protrusion 140, the vibration transmission effect between the first protrusion 140 and the guide groove 130 will be significantly reduced compared with the vibration transmission effect between the solid structure of the first protrusion 140 and the guide groove 130. Here, the contact area between the first protrusion 140 and the guide groove 130 can be unlimited. The first protrusion 140 can be in full contact with the inner wall of the guide groove 130 or in partial contact.

[0044] If the first protrusion 140 is a solid structure (see...) Figure 5At this time, the first protrusion 140 is inserted into the guide groove 130, and the first protrusion 140 is in partial contact with the inner wall of the guide groove 130. Thus, the inner wall of the guide groove 130 that is not in contact with the first protrusion 140 forms a gap space 190. Under the action of the gap space 190, the contact area between the first protrusion 140 and the guide groove 130 can be reduced, thereby reducing the vibration transmission area and thus achieving the purpose of reducing vibration transmission.

[0045] In some embodiments (not shown), the first protrusion 140 may be configured as one.

[0046] Furthermore, in some embodiments, after the second housing 120 is fitted onto the outside of the first housing 110, the second housing 120 and the first housing 110 can be fixed together by a snap-fit ​​or by other fixing methods to restrict the second housing 120 to the outside of the first housing 110.

[0047] In some embodiments, reference Figure 3 The first housing 110 is provided with a guide portion 150, and a first protrusion 140 is installed on the guide portion 150. When the second housing 120 is sleeved on the outside of the first housing 110, the guide portion 150 is located within the guide groove 130. It should be noted that the guide portion 150 abuts against the inner wall of the guide groove 130 through the first protrusion 140. The guide portion 150 is provided to improve the stability between the first protrusion 140 and the first housing 110. Further, the guide portion 150 is configured as a plate-like structure, having a first surface 151 and a second surface 152. The first protrusion 140 is installed on the first surface 151 and / or the second surface 152 of the guide portion 150, and the first protrusion 140 creates a gap space 190 between the first surface 151 and / or the second surface 152 of the guide portion 150 and the inner wall of the guide groove 130. Of course, in this embodiment, the first protrusion 140 can adopt a chamber structure, and the chamber structure can also create a gap space 190.

[0048] In some embodiments, a plurality of first protrusions 140 are provided, and the plurality of first protrusions 140 are spaced apart along the extending direction of the guide portion 150. Further, in some embodiments, the plurality of first protrusions 140 may all be provided on the first surface 151 or the second surface 152 of the guide portion 150. However, this design is not limited thereto. In some embodiments, the plurality of first protrusions 140 may be divided into two groups and respectively provided on the first surface 151 and the second surface 152 of the guide portion 150, wherein the protrusions provided on the first surface 151 and the second surface 152 of the guide portion 150 are vertically opposite each other.

[0049] Furthermore, in some embodiments, reference is made to... Figure 4The guide groove 130 includes a first guide section 131 and a second guide section 132, which together give the guide groove 130 a stepped structure. However, this design is not limited to this. In some embodiments, the guide groove 130 also includes a third guide section 133, a fourth guide section, etc., which, under the action of the third guide section 133 and the fourth guide section (not shown), give the guide groove 130 a multi-step structure. It should be noted that when the guide groove 130 has a stepped structure, the size of the first protrusion 140 also changes accordingly. It should be further noted that the stepped structure of the guide groove 130 varies depending on the structure of the second housing 120. Furthermore, when the second housing 120 is a single integral structure, the stepped structure of the guide groove 130 is either gradually widening or gradually narrowing in one direction; that is, the size of the guide section in the guide groove 130 gradually increases or decreases in one direction. When the second housing 120 is formed by splicing multiple cylindrical structures, the stepped structure presented by the guide groove 130 can be either expanding or contracting; in addition to expanding or contracting, it can also be other structures, such as one of the guide sections gradually widening or contracting towards the adjacent guide sections on both sides.

[0050] It should also be noted that when the guide groove 130 is tapered or widened, the guide groove 130 has a large end and a small end. In this case, when the second housing 120 is fitted outside the first housing 110, the first housing 110 enters the second housing 120 from the large end of the guide groove 130 and is inserted into the guide groove 130, moving along the guide groove 130. It should be noted that under the action of this structure, it is convenient to assemble and disassemble the second housing 120 and the first housing 110, which can improve efficiency.

[0051] Furthermore, in some embodiments, reference is made to... Figure 4The guide groove 130 is disposed in the second housing 120 and is constructed between two guide plates 160. It should be noted that two guide plates 160 protrude from the inner wall of the second housing 120, with the guide groove 130 constructed between the two guide plates 160; however, this design is not limited to this. In some embodiments, the guide groove 130 can be directly formed on the inner wall of the second housing 120. The guide plate 160 is provided with a guide surface 161 facing the first housing 110, and the first housing 110 is provided with a second protrusion 100a abutting against the guide surface 161. It should be further noted that the first housing 110 abuts against the guide surface 161 through the second protrusion 100a, and under the action of the second protrusion 100a, a gap space 190 is formed between the first housing 110 and the guide surface 161. Specifically, when the second protrusion 100a adopts a multi-cavity structure, the gap space 190 corresponds to the multiple cavities in the second protrusion 100a, and the second protrusion 100a is in full or partial contact with the guide surface 161. When the second protrusion 100a adopts a solid structure, the second protrusion 100a is in partial contact with the guide surface 161, and a gap space 190 is formed between the part of the guide surface 161 that is not in contact with the first housing 110 and the first housing 110. Under the action of the gap space 190, the vibration transmitted from the first housing 110 to the second housing 120 through the second protrusion 100a can be reduced. At the same time, with the cooperation of the guide surface 161 and the second protrusion 100a, the second housing 120 can restrict the first housing 110.

[0052] In some embodiments, reference Figure 3 , Figure 4 The housing structure 100 further includes a first positioning structure 170, which includes a first positioning part 171 disposed in one of the first housing 110 and the second housing 120, and a second positioning part 172 disposed in the other. When the second housing 120 is fitted onto the first housing 110, the first positioning part 171 can abut against the second positioning part 172 to restrict the movement of the second housing 120 relative to the first housing 110 along a first direction. It should be noted that in some embodiments, the first positioning part 171 can be a positioning glass bead, and the second positioning part 172 can be a positioning groove or positioning hole that cooperates with the positioning glass bead. When the second housing 120 is fitted onto the outside of the first housing 110, the second housing 120 moves relative to the outside of the first housing 110 along the first direction until the positioning glass bead corresponds to the positioning groove or positioning hole. At this time, the positioning glass bead can be inserted into the positioning groove or positioning hole to restrict the movement of the second housing 120 relative to the first housing 110 along the first direction.

[0053] In some embodiments, reference Figure 3 , Figure 4The guide groove 130 is provided with an insertion end for the insertion of the first protrusion 140. The first positioning part 171 is configured as the end face of the insertion end, and the second positioning part 172 is configured as a positioning plate. When the second housing 120 is sleeved on the first housing 110, the positioning plate can abut against the end face. It should be noted that when the guide groove 130 is constructed between two guide plates 160, the end face of the insertion end is the end face of the guide plate 160. Furthermore, with the cooperation of the positioning plate and the end face of the guide plate 160, the movement of the second housing 120 relative to the first housing 110 in the first direction can be restricted. It can be understood that this avoids the problem of misalignment between the first housing 110 and the second housing 120. It should be noted that in this embodiment, when it is necessary to disassemble the first housing 110 and the second housing 120, it is only necessary to move the second housing 120 in the opposite direction of the first reverse direction, and then the second housing 120 can be removed from the first housing 110. Furthermore, in this embodiment, the opposite direction of the first direction is defined as the second direction.

[0054] In some embodiments, reference Figure 3 , Figure 4 The housing structure 100 further includes a second positioning structure 180. When the second housing 120 is sleeved on the first housing 110, the second positioning structure 180 restricts the movement of the second housing 120 relative to the first housing 110 in a second direction. The first direction is opposite to the second direction. Further, in some embodiments, the second positioning structure 180 may be a sealing block threadedly connected to the second housing 120. The sealing block is used to connect to the second housing 120 and abut against the first housing 110 to restrict the movement of the second housing 120 relative to the first housing 110 in the second direction.

[0055] In some embodiments, reference Figure 3 , Figure 4The second positioning structure 180 includes an elastic positioning part 181 and a third positioning part 182. One of the elastic positioning part 181 and the third positioning part 182 is disposed in the first housing 110, and the other is disposed in the second housing 120. When the second housing 120 is fitted onto the first housing 110, the elastic positioning part 181 can be locked with the third positioning part 182 to restrict the movement of the second housing 120 relative to the first housing 110 in a second direction. It should be noted that when the second housing 120 is fitted onto the first housing 110 and moves in a first direction, the elastic positioning part 181 can be compressed. When the elastic positioning part 181 corresponds to the third positioning part 182, the third positioning part 182 can relieve the compression of the elastic positioning part 181. At this time, the elastic positioning part 181 can be inserted into the third positioning part 182. When the elastic positioning part 181 is inserted into the third positioning part 182, it can restrict the movement of the second housing 120 relative to the first housing 110 in a second direction. It should be noted that in some embodiments, the third positioning part 182 can be a groove structure or a hole structure.

[0056] Furthermore, in some embodiments, reference is made to... Figure 3 When the housing structure 100 includes a first positioning part 171, a second positioning part 172, and an elastic positioning part 181, and the first positioning part 171 is configured as the end face of the insertion end, and the second positioning part 172 is configured as a positioning plate, during the assembly of the first housing 110 and the second housing 120, when the positioning plate abuts against the end face of the insertion end, the elastic positioning part 181 can be inserted into the third positioning part 182. At this time, the second housing 120 cannot move relative to the first housing 110 along the first direction or the second direction; at the same time, under the action of the guide groove 130, the second housing 120 can be restricted so that the second housing 120 cannot rotate relative to the first housing 110 along the axial direction.

[0057] Driving the elastic positioning part 181 can release the locking relationship between the elastic positioning part 181 and the third positioning part 182, and the second housing 120 can move relative to the first housing 110 in the second direction.

[0058] In some embodiments, reference Figure 2 , Figure 3The guide groove 130 and the first protrusion 140 are configured in two sets and are arranged in a one-to-one correspondence. The two sets of guide grooves 130 are symmetrically arranged with respect to the housing structure 100. Furthermore, the two sets of guide grooves 130 are arranged opposite to each other with respect to the housing, which facilitates the distribution of force. At the same time, the oppositely arranged guide grooves 130 can better constrain the first housing 110 and the second housing 120. It should be noted that in some embodiments, the guide groove 130 and the first protrusion 140 can also be configured in three sets. Furthermore, in some embodiments, when the housing structure 100 includes a guide plate 160 and a second protrusion 100a, the second protrusion 100a is also configured in two sets. It should be noted that when the second housing 120 is sleeved outside the first housing 110, the two sets of second protrusions 100a abut against the guide surfaces 161 in the two sets of guide plates 160 respectively. It should be noted that under the action of the second protrusions 100a and the guide surfaces 161, a gap space 190 can also be constructed between the guide surfaces 161 and the first housing 110. That is to say, the first housing 110 is indirectly in contact with the guide surfaces 161 through the second protrusions 100a. At this time, the vibration transmitted from the first housing 110 to the second protrusions 100a and then to the second housing 120 through the second protrusions 100a can be effectively reduced.

[0059] This utility model also proposes an electric toothbrush handle 200, see reference. Figure 1 , Figure 2 The electric toothbrush handle 200 includes a housing structure 100 and a drive member 210 mounted on the housing structure 100. The specific structure of the housing structure 100 is as described in the above embodiments. Since the electric toothbrush handle 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Furthermore, the electric toothbrush handle 200 also includes a battery 220, wherein the battery 220 is mounted on the first housing 110.

[0060] It should be noted that the first protrusion 140 is inserted into the guide groove 130 so that a gap space 190 is constructed in the guide groove 130. At this time, when the vibration generated by the drive component 210 in the electric toothbrush handle 200 is transmitted to the second housing 120 through the first housing 110, the guide groove 130 and the first protrusion 140, the vibration transmission between the first housing 110 and the second housing 120 can be reduced under the action of the gap space 190, thereby reducing the vibration generated by the second housing 120 and solving the problem of large vibration of the outer shell in the prior art.

[0061] This utility model also proposes an electric toothbrush 300, see reference. Figure 1 , Figure 2The electric toothbrush 300 includes an electric toothbrush handle 200 and a toothbrush head 310. The specific structure of the electric toothbrush handle 200 is as described in the above embodiments. Since this electric toothbrush 300 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The toothbrush head 310 is connected to the electric toothbrush handle 200, and the toothbrush head 310 is connected to the electric toothbrush handle 200 through a detachable structure. However, this design is not limited to this. In some embodiments, the toothbrush head 310 can also be connected to the electric toothbrush handle 200 through a non-detachable structure. In this embodiment, this electric toothbrush 300 can be used as a disposable product in places such as hotels and hospitals.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An electric toothbrush handle, characterized in that, Includes a housing structure and a drive component, wherein the housing structure includes: The first housing has a mounting position for mounting a drive component; The second housing is fitted over the first housing. One of the first housing and the second housing has a first protrusion, and the other has a guide groove extending along the direction of the housing structure. When the second housing is fitted over the first housing, the first protrusion is inserted into the guide groove so that a gap space is formed in the guide groove.

2. The electric toothbrush handle as described in claim 1, characterized in that, The first housing is provided with a guide portion, and the first protrusion is installed on the guide portion. When the second housing is sleeved on the outside of the first housing, the guide portion is located in the guide groove.

3. The electric toothbrush handle as described in claim 2, characterized in that, Multiple first protrusions are provided, and the multiple first protrusions are arranged at intervals along the extension direction of the guide portion.

4. The electric toothbrush handle as described in claim 2, characterized in that, The guide groove includes a first guide section and a second guide section, wherein the first guide section and the second guide section make the guide groove have a stepped structure; And / or, the guide groove is disposed in the second housing, the guide groove is constructed between two guide plates, the guide plate is provided with a guide surface facing the first housing, and the first housing is provided with a second protrusion abutting against the guide surface.

5. The electric toothbrush handle as described in any one of claims 1 to 4, characterized in that, The electric toothbrush handle also includes a first positioning structure, which includes a first positioning part disposed in one of the first housing and the second housing, and a second positioning part disposed in the other. When the second housing is fitted onto the first housing, the first positioning part can abut against the second positioning part to restrict the second housing from moving relative to the first housing in the first direction.

6. The electric toothbrush handle as described in claim 5, characterized in that, The guide groove is provided with an insertion end for inserting the first protrusion. The first positioning part is configured as the end face of the insertion end, and the second positioning part is configured as a positioning plate. When the second housing is sleeved on the first housing, the positioning plate can abut against the end face.

7. The electric toothbrush handle as described in claim 5, characterized in that, The electric toothbrush handle also includes a second positioning structure. When the second housing is sleeved on the first housing, the second positioning structure restricts the second housing from moving relative to the first housing in a second direction, the first direction being opposite to the second direction.

8. The electric toothbrush handle as described in claim 7, characterized in that, The second positioning structure includes an elastic positioning part and a third positioning part. One of the elastic positioning part and the third positioning part is disposed in the first housing and the other is disposed in the second housing. When the second housing is sleeved on the first housing, the elastic positioning part can be locked with the third positioning part to restrict the second housing from moving relative to the first housing in the second direction. Driving the elastic positioning part can release the locking relationship between the elastic positioning part and the third positioning part, and the second housing can move relative to the first housing in a second direction.

9. The electric toothbrush handle as described in claim 5, characterized in that, The guide groove and the first protrusion are configured in two sets, and are set in a one-to-one correspondence. The two sets of guide grooves are symmetrically arranged with respect to the shell structure.

10. An electric toothbrush, characterized in that, Includes an electric toothbrush handle as described in any one of claims 1 to 9, and a toothbrush head mounted on the electric toothbrush handle.

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