Jet fixing assembly and oral irrigator

Abstract

The present application relates to a kind of shower head fixing assembly and oral irrigator.Shower head fixing assembly is used to install shower head, and shower head is provided with limiting slot, and shower head fixing assembly includes locking unit and support seat, locking unit includes shell and elastic piece, shell is provided with through slot, through slot penetrates the two sides of shell, and elastic piece is connected to shell, support seat includes elastic buckle and locking sleeve, locking sleeve is provided with through slot, and the outer periphery of locking sleeve is provided with recess, and through slot is communicated with recess, and shower head passes through through slot and through slot and extrudes elastic piece, so that limiting slot is exposed to recess, and elastic buckle is held in limiting slot and recess.In the above process, the assembly gap between shower head and support seat is adjusted by extruding elastic piece, so that limiting slot is exposed to recess, i.e.the slot of limiting slot and recess is aligned, and at this time, elastic buckle can be held in limiting slot and recess, and then realize that shower head and support seat are assembled in place, and stably installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral irrigators, in particular to a nozzle fixing assembly and an oral irrigator. BACKGROUND

[0002] In a conventional handheld oral irrigator, when the nozzle head is mounted in the body of the oral irrigator, the nozzle head is fixed by the nozzle head clamping device on the body. Since the mounting precision of the nozzle head and the body is relatively high, when the nozzle head is assembled with the body, it is easy to cause unstable mounting of the nozzle head and the body, and the nozzle head is prone to shaking. SUMMARY

[0003] Therefore, it is necessary to provide a nozzle fixing assembly and an oral irrigator to solve the problem of unstable mounting caused by the misassembly of the nozzle head and the body.

[0004] A nozzle fixing assembly is used for mounting a nozzle, the nozzle is provided with a limiting slot, and the nozzle fixing assembly comprises:

[0005] a locking unit, which comprises a housing and an elastic member, the housing is provided with a through slot, the through slot penetrates through two opposite sides of the housing, and the elastic member is connected to the housing; and

[0006] a supporting seat, which comprises an elastic buckle and a locking sleeve, the locking sleeve is provided with a through groove, the outer periphery of the locking sleeve is provided with a groove, and the through groove is in communication with the groove; the nozzle penetrates through the through slot and the through groove and presses the elastic member, so that the limiting slot is exposed to the groove, and the elastic buckle is clamped in the limiting slot and the groove.

[0007] In the above nozzle fixing assembly, during the process of mounting the nozzle on the supporting seat, the user can hold the nozzle to pass part of the structure of the nozzle into the guide slot and resist the elastic member with another part of the structure of the nozzle. The user applies a downward force to the nozzle to make part of the structure of the nozzle press the elastic member and make the elastic member compressively deform. At this time, the nozzle accommodated in the guide slot can move downward and move to the position where the elastic buckle is clamped in the limiting slot and the groove, so as to realize the assembly of the nozzle and the supporting seat. After the assembly of the nozzle and the supporting seat is completed, the user releases the nozzle, and the elastic member has an upward force on the nozzle to make the elastic buckle resist the groove wall of the groove, so that the nozzle is not easy to shake on the supporting seat. In the above process, the nozzle adjusts the assembly gap between the nozzle and the supporting seat by pressing the elastic member to expose the limiting slot to the groove, that is, the slot openings of the limiting slot and the groove are aligned. At this time, the elastic buckle can be clamped in the limiting slot and the groove, so as to realize the assembly of the nozzle and the supporting seat in place and stable mounting.

[0008] In one of the embodiments, the locking unit further comprises a movable plate connected to the elastic member and accommodated in the through groove, the movable plate is provided with a guide groove communicating with the through groove; the nozzle passes through the guide groove and abuts against one side of the movable plate away from the elastic member, and the nozzle can press the movable plate to compress the elastic member.

[0009] In one of the embodiments, the shell comprises an upper shell and a lower shell, the elastic member is connected to the lower shell and accommodated in the through groove, the through groove forms a first slot in the upper shell, the through groove forms a second slot in the lower shell, the locking sleeve is arranged in the second slot, and the nozzle passes into the through groove from the first slot and presses the movable plate.

[0010] In one of the embodiments, one side of the lower shell towards the upper shell is provided with a boss, the boss is arranged around the second slot, the elastic member is sleeved on the boss and can be extended and retracted along the boss, and the boss can limit the movement range of the movable plate.

[0011] In one of the embodiments, one side of the upper shell towards the lower shell is provided with a convex ring, the convex ring is arranged around the first slot and spaced from the first slot, the convex ring is sleeved on the movable plate, and the upper shell can limit the movement range of the movable plate.

[0012] In one of the embodiments, any of the following schemes is included:

[0013] The lower shell is further provided with a positioning groove, and the upper shell is provided with a positioning column clamped in the positioning groove.

[0014] The lower shell is provided with a clamping groove, and one side of the upper shell towards the lower shell is provided with a clamping hook clamped in the clamping groove.

[0015] In one of the embodiments, the support seat further comprises a water inlet sleeve connected to the locking sleeve and in communication with the nozzle.

[0016] In one of the embodiments, the support seat further comprises a sealing ring sleeved on the nozzle to seal the gap between the water inlet sleeve and the nozzle.

[0017] A water pick comprises a nozzle, a body and the nozzle fixing assembly described above, the body comprises a water pump assembly connected to the locking sleeve, the nozzle is detachably connected to the locking sleeve, and the water pump assembly can be used to draw water into the nozzle.

[0018] In one of the embodiments, the nozzle comprises a connecting portion and a water spraying portion connected to the connecting portion, the water spraying portion is provided with a convex bump protruding outward at one end close to the connecting portion, the limiting groove is arranged on the connecting portion, the connecting portion is arranged through the penetrating groove and into the through groove, and the convex bump can press the elastic member. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an exploded view of part of the oral irrigator in one of the embodiments.

[0020] Figure 2 It is a cross-sectional view of the oral irrigator shown in the figure. Figure 1

[0021] It is an enlarged view of A of the oral irrigator shown in the figure. Figure 3 Figure 2 It is a perspective view of the upper shell of the oral irrigator shown in the figure.

[0022] Figure 4 Figure 1 It is a perspective view of the lower shell of the oral irrigator shown in the figure.

[0023] Figure 5 It is a perspective view of the lower shell of the oral irrigator shown in the figure. Figure 1

[0024] Reference signs: nozzle fixing assembly 10, nozzle 100, connecting portion 110, water spraying portion 120, convex bump 121, limiting groove 130, locking unit 200, shell 210, penetrating groove 211, first slot 2111, second slot 2112, upper shell 212, lower shell 213, convex ring 214, accommodating groove 215, mounting groove 216, convex table 217, positioning column 2181, positioning groove 2182, clamping hook 2191, clamping groove 2192, elastic member 230, movable plate 240, guide groove 241, support seat 300, elastic buckle 310, locking sleeve 320, through groove 321, recess 322, water inlet sleeve 330, sealing ring 400. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] ​​​It should be understood that when an element as a means plus function is recited in the disclosure, any step or functionality so identified can also be combined with other elements recited or not recited in the disclosure as an alternate means of accomplishing the function.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0028] Reference Figure 1 As people pay more and more attention to oral hygiene, more and more attention is paid to oral cleaning. Brushing is the most common dental care behavior. However, most toothbrushes cannot make toothpaste reach the crevices, grooves and cracks of the occlusal surface, so a water pick is needed as an auxiliary tool for toothbrush to clean teeth. In one embodiment, a water pick is provided as a new auxiliary tool for oral cleaning. The water pick mainly uses the impact force of high-speed fluid to achieve oral cleaning by directly impacting the user's gums or teeth from the water outlet of the nozzle of the water pick. In one embodiment, the water pick includes a nozzle 100, a body and a nozzle fixing assembly 10. The body includes a water pump assembly for pumping water or cleaning liquid and can be connected to the nozzle fixing assembly 10. The nozzle 100 is detachably connected to the nozzle fixing assembly 10. Specifically, the water pump assembly can pump the water or cleaning liquid stored in the water tank into the nozzle fixing assembly 10, and the water or cleaning liquid is sprayed from the nozzle 100 through the nozzle fixing assembly 10. The sprayed water can be used to clean the oral cavity. It can be understood that during use, the user can directly hold the water outlet of the nozzle 100 close to the teeth or gums, or keep a close distance, so that the water sprayed from the water outlet of the nozzle 100 maintains a high-speed impact force, thereby achieving oral cleaning.

[0029] Reference Figure 1 and Figure 2In one of the embodiments, the spray head fixing assembly 10 comprises a locking unit 200 and a supporting base 300 connected to the locking unit 200, the spray head 100 can be arranged in the locking unit 200 and fixedly connected with the supporting base 300, and the water pumped by the water pump assembly can be sprayed out from the water outlet of the spray head 100 through the supporting base 300 and the locking unit 200. In one of the embodiments, the locking unit 200 comprises a housing 210 and an elastic member 230, the housing 210 is provided with a through groove 211 penetrating through two opposite sides of the housing 210, the elastic member 230 is a component with certain elasticity and can be elastically deformed, the elastic member 230 is connected to the housing 210 and accommodated in the through groove 211, the elastic member 230 is provided with a guide groove 241, the guide groove 241 and the through groove 211 are communicated in the axial direction, so that the spray head 100 can pass through the guide groove 241 and the through groove 211. It can be understood that the size of the guide groove 241 is approximately equal to the outer circumferential size of the spray head 100, so that the spray head 100 is not easy to swing when arranged in the guide groove 241.

[0030] Reference Figure 1 , Figure 2 and Figure 3 In one of the embodiments, the spray head 100 comprises a connecting portion 110 and a water spraying portion 120 connected to the connecting portion 110, the connecting portion 110 can be in the shape of a column, a cylinder or a prism and can be arranged in the guide groove 241, and the water spraying portion 120 is outwardly protruded at one end close to the connecting portion 110 to form a protrusion 121, the maximum width of the cross section of the protrusion 121 is greater than the maximum width of the connecting portion 110. Specifically, in the process of installing the spray head 100 on the spray head fixing assembly 10, the user first holds the spray head 100 to arrange the connecting portion 110 of the spray head 100 in the guide groove 241, at this time, the protrusion 121 of the water spraying portion 120 can abut against the elastic member 230, the user gives the spray head 100 a force to press the elastic member 230, so that the protrusion 121 abuts against the elastic member 230 and can compress the elastic member 230, the elastic member 230 is elastically deformed, at this time, the connecting portion 110 moves downward and can move to the position of the supporting base 300, thereby realizing the fixed connection between the connecting portion 110 and the supporting base 300. After the connecting portion 110 is connected with the supporting base 300, the user releases the spray head 100, the elastic member 230 releases the elastic force, so that the elastic member 230 has an upward force on the spray head 100 to limit the spray head 100 on the spray head fixing assembly 10, effectively preventing the spray head 100 from shaking.

[0031] Reference Figure 1 , Figure 4 and Figure 5In one of the embodiments, the shell 210 comprises an upper shell 212 and a lower shell 213, the upper shell 212 is substantially disc-shaped, the through groove 211 forms a first notch 2111 on the upper shell 212, and the through groove 211 forms a second notch 2112 on the lower shell 213. Specifically, the elastic member 230 is accommodated in the through groove 211 and connected to the upper shell 212 at one end and to the lower shell 213 at the other end, and the elastic member 230 is an elastic element. When the connecting portion 110 of the spray head 100 is inserted into the guide groove 241, the convex bump 121 of the spray head 100 abuts against the elastic member 230 and presses part of the elastic member 230 to deform the part of the elastic member 230, so that the connecting portion 110 can be moved downward and fixedly connected to the support seat 300. Specifically, the side of the upper shell 212 facing the lower shell 213 is provided with a clamping hook 2191, and the lower shell 213 is further provided with a clamping groove 2192, when the upper shell 212 is covered on the lower shell 213, the clamping of the clamping hook 2191 and the clamping groove 2192 can realize the fixation of the upper shell 212 and the lower shell 213. It can be understood that the side of the upper shell 212 facing the lower shell 213 is provided with a positioning column 2181, and the lower shell 213 is provided with a positioning groove 2182, the positioning column 2181 and the positioning groove 2182 are beneficial to the accurate positioning of the upper shell 212 and the lower shell 213 during clamping. Among them, the clamping hook 2191 and the positioning column 2181 can be provided with multiple, the number and position of the clamping hook 2191 and the clamping groove 2192 are matched with each other, and the number and position of the positioning column 2181 and the positioning groove 2182 are matched with each other, so that the assembly of the upper shell 212 and the lower shell 213 is more stable and firm.

[0032] Reference Figure 1 and Figure 3In one of the embodiments, the locking unit 200 comprises a movable plate 240 connected to the elastic member 230 and accommodated in the through groove 211, one end of the elastic member 230 away from the movable plate 240 is connected to the lower shell 213, and the other end of the movable plate 240 away from the elastic member 230 is capable of abutting against the upper shell 212, and the movable plate 240 is provided with a guide groove 241 communicating with the through groove 211. Specifically, the movable plate 240 is generally disc-shaped, and can also be other plate-shaped, etc., the guide groove 241 is located at the middle position of the movable plate 240, and the size of the guide groove 241 and the size of the connecting portion 110 are matched with each other, so that the nozzle 100 can pass through the guide groove 241 and be relatively stably installed on the movable plate 240. It can be understood that in the process of installing the nozzle 100 on the nozzle fixing assembly 10 by the user, the user can first pass the connecting portion 110 of the nozzle 100 into the guide groove 241, at this time the convex bump 121 of the nozzle 100 abuts against the side of the movable plate 240 away from the elastic member 230, the user applies a downward force to the nozzle 100, so that the convex bump 121 presses the movable plate 240, the movable plate 240 is separated from the upper shell 212 and presses the elastic member 230, and the elastic member 230 is compressed and deformed, at this time the connecting portion 110 can be moved downward and be fixedly connected with the support seat 300. When the connecting portion 110 is connected with the support seat 300, the user releases the force, the elastic member 230 restores the deformation to drive the movable plate 240 to abut against the upper shell 212 again, at this time the position of the movable plate 240 and the upper shell 212 are fixed with each other, since the nozzle 100 is installed on the movable plate 240, at this time the position of the nozzle 100 in the shell 210 is also limited, so as to prevent the nozzle 100 from shaking relative to the upper shell 212.

[0033] REFERENCE Figure 3 、 Figure 4 and Figure 5In one of the embodiments, the upper shell 212 is provided with a protruding ring 214 on the side facing the lower shell 213, the protruding ring 214 is substantially annular and can be accommodated in the through groove 211, the protruding ring 214 is annularly arranged on the first slot 2111 and is spaced apart from the first slot 2111. When the movable plate 240 abuts against the upper shell 212, the upper shell 212 can effectively prevent the movement of the movable plate 240. Due to the arrangement of the protruding ring 214, the maximum dimension of the cross section of the protruding ring 214 is greater than or equal to the maximum dimension of the movable plate 240, so that when the movable plate 240 abuts against the upper shell 212, the protruding ring 214 can limit the longitudinal movement of the movable plate 240, thereby making the movable plate 240 more stably abut against the upper shell 212 when the movable plate 240 abuts against the upper shell 212, and the nozzle 100 sleeved on the movable plate 240 is also not easy to shake. In one of the embodiments, the lower shell 213 is provided with a protruding ring 217 on the side facing the upper shell 212, the protruding ring 217 is substantially annular, the protruding ring 217 is annularly arranged on the second slot 2112, and the dimension of the cross section of the protruding ring 217 is slightly smaller than the dimension of the cross section of the elastic member 230, so that when the elastic member 230 is connected to the lower shell 213, the elastic member 230 can be sleeved on the protruding ring 217 and can stretch and contract along the protruding ring 217, thereby making the arrangement of the protruding ring 217 can limit the longitudinal movement of the elastic member 230. Specifically, when the nozzle 100 is not installed, at this time the elastic member 230 is not extruded, i.e. the elastic member 230 is in the initial position, the elastic member 230 is in the compressed state, i.e. the elastic member 230 has an upward force on the movable plate 240, so that the elastic member 230 can abut against the movable plate 240 and abut the movable plate 240 against the upper shell 212. At the same time, the height of the elastic member 230 in this state is greater than the height of the protruding ring 217, so that when the movable plate 240 extrudes the elastic member 230, the elastic member 230 continues to be compressed, and can be compressed to the height of the surface of the protruding ring 217, i.e. the compression range of the elastic member 230 is the movement range of the movable plate 240.

[0034] Specifically, when the user installs the spray head 100, the user can operate the spray head 100 to pass the connecting portion 110 into the guide groove 241, the convex bump 121 of the spray head 100 presses the movable plate 240, the movable plate 240 in turn presses the elastic member 230, so that the elastic member 230 is compressed and deformed, and the movable plate 240 can move downward. In the process of compression of the elastic member 230, the elastic member 230 can be compressed along the height direction of the boss 217 due to the limiting of the boss 217, and is not easy to shake, and when the movable plate 240 compresses the elastic member 230 so that the elastic member 230 is flush with the surface of the boss 217, the movable plate 240 can no longer continue to move, at this time, the connecting portion 110 can be connected with the support seat 300. It can be understood that the connection of the connecting portion 110 and the support 300 can occur in the process of compression of the elastic member 230, that is, when the elastic member 230 is not flush with the surface of the boss 217, the connecting portion 110 can also be connected with the support seat 300. Further, after the connection, the user no longer presses the movable plate 240, and the elastic member 230 restores the deformation, that is, the elastic member 230 restores the deformation along the height direction of the boss 217, which is beneficial to the stable movement of the elastic member 230 to the position of abutting against the upper shell 212, thereby realizing the position fixation between the movable plate 240 and the upper shell 212, and limiting the displacement of the spray head 100. The above-mentioned arrangement of the boss 217 is beneficial to the stability of the elastic member 230 in the process of compression or restoration of the deformation, that is, the elastic member 230 can move along a straight line in the process of compression or restoration of the deformation, and is not easy to shake, and is beneficial to the stable movement of the elastic member 230 to abut against the upper shell 212 and be accommodated in the accommodation groove 215.

[0035] Reference Figure 1 and Figure 3In one of the embodiments, the support base 300 comprises an elastic buckle 310 and a locking sleeve 320, the locking sleeve 320 is provided with a through slot 321, the cross section of the through slot 321 is disc-shaped and similar to the outer shape of the connecting portion 110 of the spray head 100, and the size is suitable, the outer periphery of the locking sleeve 320 is provided with a recess 322, the through slot 321 and the recess 322 are communicated, and the elastic buckle 310 is accommodated in the recess 322. Specifically, part of the structure of the locking sleeve 320 can be arranged in the second notch 2112 of the lower shell 213, that is, the size of the cross section of the second notch 2112 and the size of the outer periphery of the locking sleeve 320 are suitable for each other, when the connecting portion 110 of the spray head 100 is arranged in the guide slot 241 and passes through the through slot 321, the connecting portion 110 can be fixedly connected with the elastic buckle 310. Further, the outer periphery of the connecting portion 110 is provided with a limiting slot 130, the limiting slot 130 is substantially annular, since the elastic buckle 310 has a certain elasticity and is substantially C-shaped, in the initial state, part of the structure of the elastic buckle 310 is accommodated in the recess 322, and another part of the structure of the elastic buckle 310 passes into the through slot 321. When the connecting portion 110 moves to be fixedly connected with the elastic buckle 130, first, the connecting portion 110 moves to the limiting slot 130 exposed to the recess 322, that is, at this time, the slot of the limiting slot 130 and the slot of the recess 322 are aligned, then the connecting portion 110 continues to move, so that part of the structure of the elastic buckle 310 can be clamped in the limiting slot 130 and the recess 322, thereby realizing the fixed connection of the connecting portion 110 and the elastic buckle 310.

[0036] Specifically, in the process that the user installs the spray head 100 on the support seat 300, the user can pick up the spray head 100, first pass the connecting part 110 of the spray head 100 through the guide slot 241 and into the through slot 321, at this time the convex bump 121 of the spray head 100 abuts against the movable plate 240, the user exerts a downward force on the spray head 100 to make the convex bump 121 press the movable plate 240, the movable plate 240 is separated from the upper shell 212 and presses the elastic piece 230, and the elastic piece 230 is compressed and deformed at this time, the connecting part 110 can be moved downward to open the elastic buckle 310 to a certain extent, the elastic buckle 310 moves around the outer periphery of the connecting part 110, when the elastic buckle 310 moves to be clamped with the limiting slot 130, the fixed connection of the spray head 100 and the support seat 300 is realized. When the spray head 100 and the support seat 300 are assembled, the user releases the spray head 100, the elastic piece 310 restores the deformation and has an upward force on the spray head 100 to make the elastic buckle 310 abut against the groove wall of the recess 322 tightly, avoid the elastic buckle 310 to shake in the recess, at the same time, the movable plate 240 abuts against the upper shell 212 and is accommodated in the accommodation slot 215, the elastic piece 310 limits the axial movement of the movable plate 240, the accommodation slot 215 limits the radial movement of the movable plate 240, and the position of the movable plate 240 and the upper shell 212 is relatively fixed, so that the position of the spray head 100 in the shell 210 is fixed, the stable installation of the spray head 100 and the spray head fixing assembly 10 is realized, and the shaking of the spray head 100 relative to the shell 210 is effectively avoided.

[0037] In one of the embodiments, the support seat 300 further comprises a water inlet sleeve 330, one end of the water inlet sleeve 330 is connected with the locking sleeve 320, the water inlet of the water inlet sleeve 330 is fixedly connected with the water pump assembly of the machine body, and the water outlet of the water inlet sleeve 330 is in communication with the through slot 321 of the locking sleeve 320. The water pump assembly can pump out the water or cleaning liquid in the water tank, so that the water enters the water inlet sleeve 330 from the water inlet of the water inlet sleeve 330 and flows to the through slot 321 of the locking sleeve 320, and then flows into the spray head 100 from the through slot 321, and then is sprayed out from the water outlet of the spray head 100, so that the user's oral cavity can be cleaned. It can be understood that the support seat 300 further comprises a sealing ring 400, which can be made of flexible materials such as silica gel, and the sealing ring 400 is sleeved on the spray head 100 to seal the gap between the water inlet sleeve 330 and the spray head 100. Further, part of the structure of the sealing ring 400 is sealingly connected with the inner wall of the water inlet sleeve 330, and the other part of the structure of the sealing ring 400 is sealingly connected with the inner wall of the locking sleeve 320, and the sealing sleeve effectively prevents the water from flowing out from the gap between the water inlet sleeve 330 and the locking sleeve 320, and prevents the water from flowing into the machine body to damage other elements of the machine body.

[0038] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0039] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A nozzle fixing assembly for mounting a nozzle, wherein the nozzle has a limiting groove, characterized in that, The spray head fixing assembly comprises: a locking unit comprising a housing and an elastic member, the housing is provided with a through slot penetrating through two opposite sides of the housing, and the elastic member is connected to the housing; and a supporting seat comprising an elastic buckle and a locking sleeve, the locking sleeve is provided with a through groove, the outer periphery of the locking sleeve is provided with a groove, and the through groove and the groove are in communication; the spray head penetrates through the through slot and the through groove and presses the elastic member; the locking unit further comprises a movable plate, the movable plate is connected to the elastic member and accommodated in the through slot, the housing comprises an upper housing and a lower housing, one end of the elastic member away from the movable plate is connected to the lower housing, the end of the movable plate away from the elastic member can abut against the upper housing, and the movable plate is provided with a guide slot in communication with the through slot; the spray head penetrates through the guide slot and abuts against the side of the movable plate away from the elastic member, and the spray head can press the movable plate to compress the elastic member, so that the limiting groove is exposed to the groove, and the elastic buckle is clamped in the limiting groove and the groove; the through slot forms a first slot opening in the upper housing, the through slot forms a second slot opening in the lower housing, the locking sleeve is arranged in the second slot opening, and the spray head penetrates into the through slot from the first slot opening and presses the movable plate; one side of the upper housing towards the lower housing is provided with a convex ring, the convex ring is arranged around the first slot opening and spaced apart from the first slot opening, the convex ring is sleeved with the movable plate, and the maximum dimension of the cross-sectional area of the convex ring is greater than or equal to the maximum dimension of the movable plate; one side of the lower housing towards the upper housing is provided with a convex table, the convex table is arranged around the second slot opening, the elastic member is sleeved with the convex table and can be telescopic along the convex table, the elastic member is in a compressed state when the spray head is not installed, and the height of the elastic member is greater than the height of the convex table.

2. The showerhead fixation assembly of claim 1, wherein, Any one of the following schemes is included: the lower housing is further provided with a positioning groove, the upper housing is provided with a positioning column, and the positioning column is clamped in the positioning groove; the lower housing is provided with a clamping groove, and one side of the upper housing towards the lower housing is provided with a clamping hook, and the clamping hook is clamped in the clamping groove.

3. The showerhead fixation assembly of claim 1, wherein, The supporting seat further comprises a water inlet sleeve, which is connected to the locking sleeve and can be in communication with the spray head.

4. The showerhead fixation assembly of claim 3, wherein, The supporting seat further comprises a sealing ring, which is sleeved with the spray head to seal the gap between the water inlet sleeve and the spray head.

5. An oral irrigator characterized by, The spray head, the body and the spray head fixing assembly of any one of claims 1-4 are included, the body comprises a water pump assembly, the water pump assembly is connected to the locking sleeve, the spray head is detachably connected to the locking sleeve, and the water pump assembly can be used to draw water into the spray head.

6. The oral irrigator of claim 5, wherein, The spray head comprises a connecting portion and a water spraying portion connected to the connecting portion, one end of the water spraying portion close to the connecting portion is outwardly convex to form a convex block, the limiting groove is provided in the connecting portion, the connecting portion is arranged in the through slot and penetrates into the through groove, and the convex block can press the elastic member.

Images