Dental strong and weak suction handle structure

Abstract

A dental strong and weak suction handle structure comprises a soft suction head and a hard valve element, a mounting round hole is formed in the soft suction head, and a valve hole is formed in the peripheral face of the hard valve element. The hard valve element is rotationally matched in the mounting round hole, a shifting handle is arranged at one end of the hard valve element, and the shifting handle and the hard valve element are of an integrally-formed structure; the soft suction head comprises a suction head part, a mounting part and a connecting part which are integrally formed and connected in sequence in the axial direction, and the connecting part of the soft suction head is sleeved with a connecting ring. According to the utility model, the assembly efficiency of the strong and weak suction handle for the dental department is effectively improved, the connecting part of the soft suction head can be restrained by utilizing the effect of the connecting ring, and the probability of elastic deformation of the connecting part of the soft suction head is reduced, so that the suction tube joint is not easy to slip off from the suction head.

Description

[0001] This application is a divisional application with the application date of May 21, 2024, application number 2024211219346, and invention name "A medical dental strong and weak suction handle". Technical Field

[0002] The utility model relates to the technical field of dental treatment instruments, in particular to a dental strong and weak suction handle structure. Background Art

[0003] The dental strong and weak suction handle is usually installed on the dental chair and connected to a negative pressure pump. During oral clinical treatment operations, it is used to suck out liquids from the patient's mouth, assist in isolating the treatment area from moisture, and pull the patient's oral soft tissue.

[0004] Referring to the silicone strong and weak suction disclosed in the Chinese patent No. 202222288301.1, the silicone strong and weak suction includes a silicone strong and weak suction, a suction head, a hard valve core arranged on the suction head, a wrench switch for rotating the hard valve core, a connecting piece sleeved on the suction head, a positioning tube for positioning the connecting piece, and a handle tube sleeved on the connecting piece. A suction port is provided at one end of the suction head, and a hollow connecting tube is connected to the other end. A first channel connecting the suction port and the connecting tube is provided in the suction head; a through hole penetrating the hard valve core is provided on the hard valve core, and the through hole can be communicated with the first channel. A locking groove is provided at one end of the hard valve core, and the wrench switch is fixedly connected to the locking groove. Medical staff rotate the hard valve core synchronously by turning the wrench switch to control the size of the through hole communicating with the first channel, thereby controlling the suction force of the silicone strong and weak suction.

[0005] The aforementioned patent inserts one end of the wrench switch into the retaining groove, achieving a quick, secure connection between the wrench switch and the rigid valve core, thereby improving assembly efficiency. However, with this structure, the wrench switch and the rigid valve core are separate components, requiring considerable assembly time during the production of the dental strong and weak suction handle. Furthermore, the toggle switch is a key component frequently operated by medical staff, and over extended use, the wrench switch can easily slip off the rigid valve core, affecting the proper function of the dental strong and weak suction handle. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a dental strong and weak suction handle structure.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A dental strong and weak suction handle structure, comprising a soft suction head and a hard valve core, wherein the soft suction head is provided with a mounting circular hole, and the outer peripheral surface of the hard valve core is provided with a valve hole;

[0009] The hard valve core can be rotatably fitted in the mounting circular hole, and a dial handle is provided on one end of the hard valve core, wherein the dial handle and the hard valve core are an integrally formed structure;

[0010] The soft pipette tip comprises a pipette head, a mounting portion, and a connecting portion integrally formed and connected in sequence along the axial direction, wherein the pipette head is provided with a suction port, the connecting portion is provided with a liquid outlet channel, the mounting circular hole is provided on the mounting portion and penetrates the mounting portion in a radial direction thereof, and the liquid outlet end of the pipette and the liquid inlet end of the liquid outlet channel both penetrate the hole wall of the mounting circular hole;

[0011] The connecting portion of the soft suction head is sheathed with a connecting ring for limiting elastic deformation of the connecting portion.

[0012] In the present invention, the outer peripheral surface of the hard valve core is slidably fitted with the hole wall of the mounting circular hole.

[0013] In the utility model, at least one sealing groove structure is provided on the outer circumferential surface of the hard valve core, and the sealing groove structure includes two annular grooves respectively located on both sides of the valve hole, and the annular grooves are arranged around the outer circumferential surface of the hard valve core; an annular convex portion for adapting to the annular groove is provided on the hole wall of the mounting circular hole, and the annular convex portion is arranged around the hole wall of the mounting circular hole, and at least one annular convex portion is matched in each annular groove, and the surface of the annular convex portion slides in fit with the groove surface of the annular groove.

[0014] In the present invention, the annular protrusion and the soft suction head are an integrally formed structure.

[0015] In the present invention, the outer diameter of the suction head portion gradually decreases from the end connected to the mounting portion toward a direction away from the mounting portion.

[0016] In the utility model, a first limiting surface and a second limiting surface are respectively provided on the opposite sides of the mounting portion, a first limiting protrusion slidingly fitted on the first limiting surface is provided between the connection between the hard valve core and the dial handle, and the other end of the hard valve core is integrally formed with a second limiting protrusion slidingly fitted on the second limiting surface.

[0017] In the present invention, a straw joint is installed on the connecting portion of the soft suction head, and the straw joint is provided with a joint channel corresponding to the liquid outlet end of the liquid outlet channel.

[0018] In the present invention, the liquid outlet channel is provided with a plurality of annular grooves arranged at intervals along the axial direction of the liquid outlet channel, the first plug-in end of the straw connector is inserted into the liquid outlet channel, and the first plug-in end of the straw connector is provided with a plurality of annular protrusions that are adapted to the annular grooves one by one.

[0019] In the present invention, the upper end surface of the joint body of the straw joint abuts against the bottom surface of the connecting part, and the bottom surface of the connecting part is provided with a mounting groove arranged circumferentially around the connecting part. The connecting ring is inserted into the mounting groove and the bottom surface abuts against the upper end surface of the joint body.

[0020] The beneficial effects of the present invention are as follows: the present invention sets the dial handle and the hard valve core as an integrally formed structure, which eliminates the need for assembly connection between the dial handle and the hard valve core, thereby eliminating the assembly time of the traditional split structure and effectively improving the assembly efficiency of the dental strong and weak suction handle; and under this structure, the connection structure between the dial handle and the hard valve core is relatively stable, and the dial handle is not easy to separate from the hard valve core, effectively ensuring the stability of the rotation of the dial handle linked to the hard valve core, and improving the user experience of the dental strong and weak suction handle. In addition, the present invention first uses the elastic action of the soft suction head itself to make the hole wall of the installation hole and the outer peripheral surface of the hard valve core slide and fit together, achieving a primary seal, and then uses an annular convex portion in each annular groove for secondary sealing, thereby ensuring the sealing state of the hard valve core after being fitted in the installation hole, reducing the probability of liquid and gas leakage from the hard valve core and the soft suction head, and ensuring the experience of medical staff when using the dental strong and weak suction handle. Moreover, the annular protrusion and the soft suction head are an integrally formed structure, so that the annular protrusion does not require additional assembly steps, effectively improving the assembly efficiency of the dental strong and weak suction handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is an exploded view of this embodiment;

[0023] Figure 2 This is a combined cross-sectional view of this embodiment Figure 1 ;

[0024] Figure 3 This is a combined cross-sectional view of this embodiment Figure 2 ;

[0025] Figure 4 The three-dimensional Figure 1 ;

[0026] Figure 5 The three-dimensional Figure 2 . DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] Reference Figure 1-5 A dental strong and weak suction handle structure includes a soft suction head 1 and a hard valve core 2. The soft suction head 1 is made of silicone and is provided with a mounting circular hole 13. The soft suction head 1 includes a suction head portion 15, a mounting portion 16 and a connecting portion 17 which are integrally connected in sequence along the axial direction. The suction head portion 15 is provided with a suction port 11, and the connecting portion 17 is provided with a liquid outlet channel 12. The mounting circular hole 13 is provided on the mounting portion 16 and penetrates the mounting portion 16 along the radial direction of the mounting portion 16. The liquid outlet end of the suction port 11 and the liquid inlet end of the liquid outlet channel 12 both penetrate the hole wall of the mounting circular hole 13.

[0031] Furthermore, the hard valve core 2 is made of hard plastic, and a valve hole 21 is provided on the outer peripheral surface of the hard valve core 2, and the valve hole 21 is arranged along the radial direction of the hard valve core 2 through the outer peripheral surface of the hard valve core 2; the hard valve core 2 can be rotatably fitted in the mounting circular hole 13, and a dial handle 20 is provided on one end of the hard valve core 2, and the dial handle 20 and the hard valve core 2 are an integrally formed structure, which eliminates the need for assembly connection between the dial handle 20 and the hard valve core 2, thereby eliminating the assembly time of the traditional split structure and effectively improving the assembly efficiency of the dental strong and weak suction handle; and under this structure, the connection structure between the dial handle 20 and the hard valve core 2 is relatively stable, and the dial hand 20 is not easy to separate from the hard valve core 2, which effectively ensures the stability of the rotation of the dial hand 20 linked to the hard valve core 2, and improves the user experience of the dental strong and weak suction handle.

[0032] As a preferred embodiment, the outer peripheral surface of the hard valve core 2 is slidably fitted with the hole wall of the mounting circular hole 13, and the hard valve core 2 is configured to be rotatable to the valve hole 21 and simultaneously connect the suction port 11 and the liquid outlet channel 12 at an angular position, and the hard valve core 2 can be rotated to the angular position where the outer peripheral surface of the hard valve core 2 simultaneously blocks the suction port 11 and the liquid outlet channel 12, so that medical staff can use the dial hand 20 to rotate the hard valve core 2 to connect or disconnect the suction port 11 and the liquid outlet channel 12. When the suction port 11 and the liquid outlet channel 12 are connected, the dental strong and weak suction handle can suck the liquid in the patient's mouth; when the outer peripheral surface of the hard valve core 2 simultaneously blocks the suction port 11 and the liquid outlet channel 12, the suction port 11 and the liquid outlet channel 12 are disconnected, and the dental strong and weak suction handle cannot suck the liquid in the patient's mouth.

[0033] Furthermore, at least one sealing groove structure is provided on the outer peripheral surface of the hard valve core 2, and the sealing groove structure includes two annular grooves 22 respectively located on both sides of the valve hole 21, and the annular groove 22 is opened on the outer peripheral surface of the hard valve core 2 and is arranged around the outer peripheral surface of the hard valve core 2; an annular protrusion 14 for adapting to the annular groove 22 is integrally formed on the hole wall of the mounting circular hole 13, and the annular protrusion 14 is arranged around the hole wall of the mounting circular hole 13, and each of the annular grooves 22 is matched with at least one annular protrusion 14, and the surface of the annular protrusion 14 slides and fits with the groove surface of the annular groove 22, so as to achieve sealing between the hard valve core 2 and the soft suction head 1.

[0034] Furthermore, the annular protrusion 14 is formed by a convex arc surface arranged around the wall of the mounting circular hole 13, and the annular groove 22 is formed by a concave arc surface surrounding the outer peripheral surface of the hard valve core 2, so as to facilitate the annular protrusion 14 to slide into the annular groove 22, thereby improving the installation efficiency. At the same time, the annular protrusion 14 formed by the convex arc surface can be better deformed and fit on the annular groove 22 formed by the concave arc surface, further improving the sealing quality.

[0035] The present invention first uses the elastic action of the soft suction head 1 itself to make the hole wall of the mounting hole 13 slide and fit with the outer peripheral surface of the hard valve core 2, thus achieving a primary seal. Then, a secondary seal is performed by using an annular protrusion 14 in each annular groove, thereby ensuring the sealed state of the hard valve core 2 after being fitted into the mounting hole 13. This solves the problem of poor sealing effect and easy pressure release due to the relatively simple sealing structure, thus ensuring the experience of medical staff when using the dental strong and weak suction handle. Moreover, the annular protrusion 14 is integrally formed on the hole wall of the mounting hole 13, so that the annular protrusion 14 and the soft suction head 1 are an integrally formed structure, so that the annular protrusion 14 does not require an additional assembly process, effectively improving the assembly efficiency of the dental strong and weak suction handle.

[0036] As a preferred embodiment, the outer diameter of the suction head 15 gradually decreases from the end connected to the mounting portion 16 toward the end away from the mounting portion 16, thereby facilitating insertion of the suction head 15 into the patient's mouth for liquid aspiration. Furthermore, a reinforcing protrusion 18 is provided in the middle of the mounting portion 16 to enhance the structural strength of the mounting portion 16 and ensure the stability of the hard valve core 2 after installation in the mounting hole 13.

[0037] As a preferred embodiment, the mounting portion 16 is provided with a first limiting surface 161 and a second limiting surface 162 on opposite sides respectively, and a first limiting protrusion 23 slidingly fitted on the first limiting surface 161 is provided between the connection between the hard valve core 2 and the dial handle 20, and the other end of the hard valve core 2 is integrally formed with a second limiting protrusion 24 slidingly fitted on the second limiting surface 162, and the first limiting protrusion 23 and the second limiting protrusion 24 are configured to limit the axial movement of the hard valve core 2 along the mounting circular hole 13, thereby ensuring the stability of the hard valve core 2 installed on the soft suction head 1; at the same time, since the first limiting protrusion 23 and the second limiting protrusion 24 are respectively slidingly fitted with the first limiting surface 161 and the second limiting surface 162, a mobile sealing effect can be played between them, thereby performing a third sealing, further ensuring the sealing state of the hard valve core 2 after being fitted in the mounting circular hole 13.

[0038] As a preferred embodiment, a straw connector 4 is installed on the connecting portion 17 of the soft suction tip 1. The straw connector 4 is provided with a connector channel 41 corresponding to the liquid outlet end of the liquid outlet channel 12. The straw connector 4 is used to connect the suction tube of the negative pressure pump.

[0039] Furthermore, the straw connector 4 includes a connector body 42, a first plug-in end 43 provided on one end of the connector body 42, and a second plug-in end 44 provided on the other end of the connector body 42. The connector body 42, the first plug-in end 43, and the second plug-in end 44 are an integrally formed structure, wherein the first plug-in end 43 is used to connect the soft suction tip 1, and the second plug-in end 44 is used to connect the straw, and the connector channel 41 passes through the connector body 42, the first plug-in end 43, and the second plug-in end 44 in sequence along the axial direction.

[0040] Furthermore, the liquid outlet channel 12 is provided with a plurality of annular grooves 121 spaced axially along the liquid outlet channel 12. The first plug end 43 of the straw connector 4 is inserted into the liquid outlet channel 12. The first plug end 43 of the straw connector 4 is provided with a plurality of annular locking protrusions 45 that match the annular locking grooves 121 one by one. The annular locking protrusions 45 cooperate with the annular locking grooves 121 to lock the first plug end 43 of the straw connector 4 into the liquid outlet channel 12. In addition, the outer surface of the second plug end 44 is provided with a plurality of annular inverted teeth for locking the straw, thereby facilitating the connection between the second plug end 44 and the straw.

[0041] As a preferred embodiment, the connecting portion 17 of the soft pipette tip 1 is sheathed with a connecting ring 5 for limiting the elastic deformation of the connecting portion 17. The connecting ring 5 constrains the connecting portion 17 of the soft pipette tip 1, reducing the chance of elastic deformation of the connecting portion 17, thereby preventing the straw connector 4 from slipping off the pipette tip. In this embodiment, when the straw connector 4 is installed on the soft pipette tip 1, the upper end surface of the connector body 42 abuts the bottom surface of the connecting portion 17. The bottom surface of the connecting portion 17 is provided with a mounting groove circumferentially arranged around the connecting portion 17. The connecting ring 5 is sheathed in the mounting groove, with its bottom surface abutting the upper end surface of the connector body 42, thereby completing the installation of the connecting ring 5.

[0042] Furthermore, a joint reinforcement protrusion 421 is raised on the outer peripheral surface of the joint body 42. The joint reinforcement protrusion 421 is flush with the upper end surface of the joint body 42 and supports the upper end surface of the joint body 42. The joint reinforcement protrusion 421 can enhance the structural strength of the upper end surface of the joint body 42, thereby ensuring the installation stability of the joint body 42.

[0043] Furthermore, a straw end accommodating groove 422 is provided at the other end of the connector body 42, and the end of the second plug-in end 44 is connected to the connector body 42 in the straw end accommodating groove 422. After the straw is put on the second plug-in end 44, the end of the straw is hidden in the straw end accommodating groove 422, thereby avoiding the hand from touching the end of the straw during the process of holding the dental strong and weak suction handle, causing possible stains on the end of the straw to stick to the hands.

[0044] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the scope of protection of the present invention.

Claims

1. A dental strong and weak suction handle structure, comprising a soft suction head (1) and a hard valve core (2), wherein the soft suction head (1) is provided with a mounting circular hole (13), and the outer peripheral surface of the hard valve core (2) is provided with a valve hole (21); The hard valve core (2) can be rotatably fitted in the mounting circular hole (13), and a handle (20) is provided on one end of the hard valve core (2), characterized in that: The handle (20) and the hard valve core (2) are an integrally formed structure; The soft suction tip (1) comprises a suction head portion (15), a mounting portion (16) and a connecting portion (17) which are integrally connected in sequence along the axial direction, wherein the suction head portion (15) is provided with a suction port (11), the connecting portion (17) is provided with a liquid outlet channel (12), the mounting circular hole (13) is provided on the mounting portion (16) and penetrates the mounting portion (16) in the radial direction of the mounting portion (16), and the liquid outlet end of the suction port (11) and the liquid inlet end of the liquid outlet channel (12) both penetrate the hole wall of the mounting circular hole (13); The connecting portion (17) of the soft suction tip (1) is sheathed with a connecting ring (5) for limiting elastic deformation of the connecting portion (17).

2. A dental strong and weak suction handle structure according to claim 1, characterized in that: The outer peripheral surface of the hard valve core (2) is slidably fitted with the hole wall of the mounting circular hole (13).

3. The dental strong and weak suction handle structure according to claim 1, characterized in that: At least one sealing groove structure is provided on the outer peripheral surface of the hard valve core (2), and the sealing groove structure includes two annular grooves (22) respectively located on both sides of the valve hole (21), and the annular grooves (22) are arranged around the outer peripheral surface of the hard valve core (2); an annular protrusion (14) for matching with the annular groove (22) is provided on the hole wall of the mounting hole (13), and the annular protrusion (14) is arranged around the hole wall of the mounting hole (13), and each of the annular grooves (22) is matched with at least one annular protrusion (14), and the surface of the annular protrusion (14) is slidably fitted with the groove surface of the annular groove (22).

4. The dental strong and weak suction handle structure according to claim 3, characterized in that: The annular protrusion (14) and the soft suction head (1) are an integrally formed structure.

5. The dental strong and weak suction handle structure according to claim 1, characterized in that: The outer diameter of the suction head (15) gradually decreases from the end connected to the mounting portion (16) in a direction away from the mounting portion (16).

6. The dental strong and weak suction handle structure according to claim 5, characterized in that: A first limiting surface (161) and a second limiting surface (162) are respectively provided on opposite sides of the mounting portion (16); a first limiting protrusion (23) slidably fitted on the first limiting surface (161) is provided between the connection between the hard valve core (2) and the dial handle (20); and a second limiting protrusion (24) slidably fitted on the second limiting surface (162) is integrally formed at the other end of the hard valve core (2).

7. A dental strong and weak suction handle structure according to any one of claims 1 to 6, characterized in that: A suction pipe joint (4) is mounted on the connecting portion (17) of the soft suction head (1), and a joint channel (41) corresponding to the liquid outlet end of the liquid outlet channel (12) is provided on the suction pipe joint (4).

8. The dental strong and weak suction handle structure according to claim 7, characterized in that: The liquid outlet channel (12) is provided with a plurality of annular grooves (121) arranged at intervals along the axial direction of the liquid outlet channel (12); the first plug end (43) of the straw connector (4) is inserted into the liquid outlet channel (12); and the first plug end (43) of the straw connector (4) is provided with a plurality of annular locking protrusions (45) that are matched one-to-one with the annular grooves (121).

9. The dental strong and weak suction handle structure according to claim 7, characterized in that: The upper end surface of the joint body (42) of the straw joint (4) abuts against the bottom surface of the connecting portion (17); the bottom surface of the connecting portion (17) is provided with a mounting groove circumferentially arranged around the connecting portion (17); the connecting ring (5) is sleeved in the mounting groove and its bottom surface abuts against the upper end surface of the joint body (42).

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