A rapid connector for a dental handpiece and an oil injector for a dental handpiece

Abstract

This application relates to a quick connector for a dental handpiece and a dental handpiece oil injector, belonging to the field of dental medical devices. Among them, the quick connector for a dental handpiece includes: a connection component, the connection component has a jack for inserting an oil pipe. Along the axis direction of its jack, the connection component is provided with an elastic pressing piece. The elastic pressing piece protrudes and extends towards one side of the connection component to form a cavity with an installation space inside. The locking piece has an installation inner hole, and the installation inner hole has a pressing protrusion protruding inwards. When the elastic pressing piece is inserted into the installation inner hole, the pressing protrusion squeezes the elastic pressing piece, causing the elastic pressing piece to clamp the dental handpiece, thereby connecting the dental handpiece to the connection component; Through the above solution, the quick connection of the dental handpiece on the dental handpiece oil injector can be realized, improving the connection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of dental equipment, and in particular, to a mobile phone quick connector of a dental handpiece oil injector and a dental handpiece oil injector. Background Art

[0002] A dental handpiece is a dental drill, which is divided into a high-speed dental handpiece and a low-speed dental handpiece. The high-speed dental handpiece is mainly used for drilling tooth cavities and extracting teeth, and the low-speed dental handpiece is mainly used for polishing. It is one of the commonly used dental equipment. Since the drill bit on the dental handpiece is mainly driven by a driving mechanism, the drill bit rotates at a high speed to achieve the purpose of drilling teeth and extracting teeth. However, precisely because the dental handpiece is a commonly used tool in dental care, it needs to be maintained after being used for a period of time. The most common and necessary maintenance is to inject oil into the dental handpiece to lubricate the movement in the dental handpiece. Currently, the connector of the dental handpiece is mainly connected to the oil injector through threads and nuts. When the dental handpiece needs to be connected to the oil injector, manual operation is required to screw it onto the oil injector one by one, which is time-consuming and laborious. Therefore, how to change the connection method between the dental handpiece oil injector and the dental handpiece without changing the design or structure of the existing dental handpiece oil injector. Summary of the Invention

[0003] This application is to solve the problem that when the existing dental handpiece is connected to the oil injector, it is generally connected by a threaded connection method, which causes time-consuming and laborious manual connection of the dental handpiece to the oil injector. This application designs a mobile phone quick connector of a dental handpiece oil injector and a dental handpiece oil injector. The specific technical solutions adopted include the technical solutions of the following two themes.

[0004] Among them, a dental handpiece quick connector is connected to a dental handpiece oil injector and includes:

[0005] A connection component, the connection component has a jack for inserting an oil pipe. The connection component is provided with an elastic pressing piece along the axis direction of its jack. The elastic pressing piece protrudes and extends towards one side of the connection component to form a cavity with an installation space inside.

[0006] A locking member, the locking member has an installation inner hole, and the installation inner hole has a pressing protrusion protruding inwards. When the elastic pressing piece is inserted into the installation inner hole, the pressing protrusion squeezes the elastic pressing piece, so that the elastic pressing piece clamps the dental handpiece extending into the installation space, thereby connecting the dental handpiece to the connection component.

[0007] Preferably, the connection component includes:

[0008] A first connection member, an assembly inner hole is arranged in the first connection member, and the first connection member is provided with at least two elastic claws along the axial direction of the assembly inner hole;

[0009] The second connecting piece is fixed to the oil injector of the dental handpiece. The second connecting piece has a connecting inner hole, and the direction of the connecting inner hole is the same as that of the assembling inner hole. The first connecting piece can be inserted into the connecting inner hole. The second connecting piece has a clamping part. When the first connecting piece is inserted into the connecting inner hole, the elastic claw is clamped with the clamping part to realize the detachable connection between the first connecting piece and the second connecting piece.

[0010] In one embodiment, each elastic pressing piece is circularly arranged along the circumferential direction of the insertion hole, and the thickness of the elastic pressing piece decreases or increases cyclically in the circumferential direction. At least two pressing protrusions are provided, and the two pressing protrusions are spaced along the circumferential direction of the installation inner hole. After the elastic pressing piece is inserted into the installation inner hole, by rotating the locking piece, the pressing protrusion presses the elastic pressing piece, so that the elastic pressing piece clamps the dental handpiece, thereby connecting the dental handpiece with the connecting component.

[0011] In one embodiment, the elastic pressing piece is split type, including at least two elastic claws, and the elastic claws are circularly arranged along the circumferential direction of the insertion hole, and each elastic claw increases or decreases in sequence along the circumferential direction of the insertion hole.

[0012] In one embodiment, the elastic pressing piece is an integral annular structure, and the thickness of the elastic pressing piece decreases or increases cyclically along its circumferential direction.

[0013] In one embodiment, the pressing protrusion is annularly arranged on the inner wall of the installation inner hole, and the inner diameter of the pressing protrusion gradually decreases or increases along the axial direction of the installation inner hole, so that the installation inner hole is a tapered hole. The large-diameter end of the installation inner hole is the insertion end of the elastic pressing piece. When the elastic pressing piece is inserted into the installation inner hole, it is gradually squeezed, thereby connecting the dental handpiece with the connecting component.

[0014] Preferably, the connecting component has a clamping groove or a clamping protrusion, the locking piece has a clamping protrusion or a clamping groove, and the clamping protrusion is clamped into the clamping groove when the elastic pressing piece is inserted into the installation inner hole, and the arc length of the clamping groove is greater than the arc length of the clamping protrusion.

[0015] Preferably, the first connecting piece includes:

[0016] A connecting body having an assembling inner hole, and the direction of the assembling inner hole is the same as that of the installation inner hole;

[0017] A flexible seal, the flexible seal is inserted into the assembling inner hole and is connected with the assembling inner hole by interference fit. The insertion hole is arranged along the direction of the assembling inner hole on the flexible seal, and the diameter of the insertion hole is not greater than the diameter of the oil pipe.

[0018] Preferably, annular protrusions protruding inward are respectively provided at both ends close to the insertion hole, or an annular protrusion protruding inward is provided at one end of the insertion hole close to the oil pipe inserted into the dental handpiece.

[0019] Preferably, the first connecting member is provided with a guiding groove along the axial direction of the connecting inner hole, and the second connecting member is provided with a guiding member along the radial direction of the connecting inner hole. When the first connecting member is inserted into the connecting inner hole, the guiding member is slidably disposed in the guiding groove.

[0020] Preferably, flexible sealing rings are respectively provided at both ends of the jack, or a flexible sealing ring is provided at one end of the jack for inserting the oil pipe of the dental handpiece.

[0021] Preferably, a detecting member is provided on the connecting assembly for obtaining a signal that the dental handpiece is inserted into the jack.

[0022] The present application also protects a dental handpiece oil injector, which includes the above-mentioned dental handpiece quick connector. In addition, it further includes a housing. A plurality of the above-mentioned dental handpiece quick connectors are provided, such as one, two, three... Each connecting assembly on each dental handpiece quick connector is provided with a connecting portion, and the dental handpiece quick connector is disposed on the housing through the connecting portion.

[0023] By providing the elastic pressing piece and the locking member, the locking member is used to squeeze the elastic pressing piece to cause it to deform. The deformation of the elastic pressing piece connects the dental handpiece quickly with the connector. When the connector is fixed on the oil injector, without changing the existing design and structure of the dental handpiece oil injector, the dental handpiece can be quickly connected to the dental handpiece oil injector, and it can avoid the time-consuming and laborious phenomenon of manually screwing each dental handpiece one by one due to traditional threaded connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the perspective view of the front view of the present invention;

[0025] Figure 2 is the exploded view of one perspective of the present invention;

[0026] Figure 3 is the exploded view of another perspective of the present invention;

[0027] Figure 4 is the bottom view of the present invention;

[0028] Figure 5 is Figure 4 the cross-sectional view taken along A-A in

[0029] Figure 6 is the structural schematic diagram of another form of the elastic pressing piece on the first connecting member;

[0030] Figure 7 is the structural schematic diagram of another pressing manner between the elastic pressing piece and the locking member;

[0031] Figure 8 is the structural schematic diagram of the dental oil injector;

[0032] Figure 9 It is a schematic diagram of the internal structure of a dental oil injector.

[0033] In the figure, 1 is a locking member, 101 is a pressing protrusion, 102 is an installation inner hole, 103 is a connecting claw, 104 is a clamping protrusion, 2 is a connecting component, 201 is a second connecting member, 202 is a first connecting member, 203 is an assembly inner hole, 204 is a guiding groove, 205 is a jack, 206 is a flexible seal, 207 is a connecting inner hole, 208 is a clamping portion, 209 is an end cap, 210 is a guiding member, 211 is a clamping groove, 212 is an elastic clamping claw, 213 is an annular protrusion, 214 is an elastic pressing piece, 214a is an elastic pressing claw, 215 is an oil pipe, 216 is a guide rod, 217 is a clamping block, 218 is a threaded hole, 3 is a machine shell, and 4 is a detecting member. Specific embodiments

[0034] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] In addition, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "counterclockwise", "clockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] As Figures 1-9 shown, the present application is a dental handpiece quick connector and a dental handpiece oil injector. It includes a dental handpiece quick connector and a dental handpiece oil injector.

[0037] Among them, the dental handpiece quick connector is connected to the dental handpiece oil injector, and it includes: a connecting component 2 and a locking member 1.

[0038] The above-mentioned connection component 2 and the locking component 1 are connectors that form a connection between a dental handpiece and a dental handpiece oil injector. The specific structure is as follows: The connection component 2 has a jack 205. One end of the jack 205 is used to insert the oil pipe on the dental handpiece oil injector, and the other end is used to insert the oil pipe 215 on the dental handpiece. Along the axis direction of the jack 205 on the connection component 2, there is an elastic pressing piece 214. The elastic pressing piece 214 protrudes and extends towards one side of the connection component 2. Specifically, it protrudes and extends towards one end of the connection component 2 to form a cavity with an installation space inside. The installation space is for the body of the dental handpiece to pass through. After the oil pipe on the dental handpiece is inserted into the jack 205, the body of the dental handpiece extends into the space surrounded by the four elastic pressing pieces 214. By the inward elastic deformation of the four elastic pressing pieces 214, the body of the dental handpiece is squeezed, thereby realizing the quick connection of the dental handpiece.

[0039] The component that causes the above-mentioned four elastic pressing pieces 214 to produce elastic deformation is the locking component 1. The locking component 1 has an installation inner hole 102. On the inner wall of the installation inner hole 102, there are inwardly protruding pressing protrusions 101. To match the number of the above-mentioned elastic pressing pieces 214, four pressing protrusions 101 are also provided, and the pressing protrusions 101 are also arranged at intervals along the circumferential direction of the installation inner hole 102. When the elastic pressing pieces 214 on the connection component 2 are inserted into the installation inner hole 102, the pressing protrusions 101 can continuously squeeze the elastic pressing pieces 214. Whether the insertion depth of the elastic pressing pieces 214 in the installation inner hole 102 continuously increases or the elastic pressing pieces 214 produce elastic deformation through other methods, such as inserting first and then rotating, the elastic pressing pieces 214 can clamp the dental handpiece, quickly connecting the dental handpiece to the connection component 2.

[0040] Through the above solution, the whole process of connecting the dental handpiece is simple and fast. The method of pressing by the elastic pressing piece 214 replaces the traditional threaded connection method, reducing the complexity of the operation. If the oil injector lubricates multiple dental handpieces at the same time, the connection time of each dental handpiece can be saved. Then, the connection of multiple dental handpieces will save a lot of time, shorten the connection time of the dental handpiece on the oil injector, and improve the connection efficiency.

[0041] Furthermore, the structure of the above-mentioned connecting component 2 specifically includes two parts, namely a first connecting piece 202 and a second connecting piece 201. Among them, the second connecting piece 201 is fixed on the dental handpiece oil injector, and the jack 205 is arranged on the first connecting piece 202; and at least two elastic claws 212 are arranged on the first connecting piece 202 along the axial direction of the assembly inner hole 203 thereon. The second connecting piece 201 has a connecting inner hole 207, and the direction of the connecting inner hole 207 is the same as that of the jack 205. The first connecting piece 202 can be inserted into the connecting inner hole 207, and the second connecting piece 201 has a clamping portion 208. When the first connecting piece 202 is inserted into the connecting inner hole 207, the elastic claws 212 are clamped with the clamping portion 208, thereby detachably connecting the first connecting piece 202 and the second connecting piece 201.

[0042] By setting the above-mentioned connecting component 2 in a way that the first connecting piece 202 and the second connecting piece 201 are clamped, the purpose of detachably connecting the first connecting piece 202 and the second connecting piece 201 is achieved. However, more importantly, it can further facilitate the quick installation of the dental handpiece onto the dental handpiece oil injector. Because before clamping the first connecting piece 202 and the second connecting piece 201, the dental handpiece is externally inserted into the jack 205 on the first connecting piece 202 and pressed tightly by the locking piece 1, and then the assembled whole is connected to the second connecting piece 201. When the first connecting piece 202 is inserted into the second connecting piece 201, the elastic claws 212 are clamped with the clamping portion 208, and the oil pipe 215 on the oil injector passing through the through hole on the second connecting piece 201 is aligned and inserted into the jack 205. At this time, the second connecting piece 201 can be pre-installed on the oil injector by bolts; in addition, after the dental handpiece is filled with oil, the elastic claws 212 can also be manually operated to make the elastic claws 212 disengage from the clamping portion 208, so as to pull out the first connecting piece 202 from the second connecting piece 201 and detach the second connecting piece 201 and the locking piece 1 connected to the second connecting piece 201 as a whole from the first connecting piece 202; then rotate the locking piece 1 to reduce the acting force of the locking piece 1 on the elastic pressing piece 214, and then pull out the dental handpiece from the jack 205; or directly pull out the locking piece 1 from the elastic pressing piece 214, and finally pull out the dental handpiece from the jack 205. It should be noted that when the first connecting piece 202 is inserted into the second connecting piece 201, the oil pipe 215 on the oil injector passing through the through hole on the second connecting piece 201 is also aligned and inserted into the jack 205. At this time, the second connecting piece 201 can be pre-installed on the oil injector by bolts.

[0043] For the specific structures and installation positions of the above elastic claws 212 and the clamping parts 208, the following methods are adopted, that is, an annular clamping protrusion or an annular clamping groove is arranged in the connecting inner hole 207 of the second connecting part 201. Here, the annular clamping protrusion can be an annular clamping protrusion protruding from the inner wall of the connecting inner hole 207, or an annular clamping groove recessed in the inner wall of the connecting inner hole 207. The elastic claws 212 extend from one end (insertion end) of the first connecting part 202 inserted into the connecting inner hole 207 to the other end. A protruding clamping block 217 is arranged on the outer side surface of each elastic claw 212. When the first connecting part 202 is inserted into the connecting inner hole 207, the elastic claws 212 are also inserted into the connecting inner hole 207 until the protruding clamping blocks 217 on the elastic claws 212 are clamped in the annular clamping protrusion or the annular clamping groove in the connecting inner hole 207. When the clamping blocks 217 on the elastic claws 212 are clamped in the annular clamping protrusion or the annular clamping groove, the end surface of the insertion end of the first connecting part 202 just abuts against the end cover 209 of the second connecting part 201 or abuts against the housing 3 of the oil injector. When it is necessary to pull out the first connecting part 202 from the second connecting part 201, a person can press the two elastic claws 212 inward, and then pull out the first connecting part 202.

[0044] It should be noted that when the second connecting part 201 has an end cover 209, a through hole for the oil pipe 215 of the oil injector to pass through is arranged on the end cover 209, and holes for bolt connection with the oil injector can also be arranged on the end cover 209.

[0045] In an alternative embodiment, the specific structures and installation positions of the above elastic claws 212 and the clamping parts 208 can also adopt the following method, that is, the above annular clamping protrusion or annular clamping groove is arranged on the outer side surface of the second connecting part 201. The elastic claws 212 can extend from the insertion end far away from the first connecting part 202 to the insertion end close to the first connecting part 202, and a space for inserting the second connecting part 201 is formed between the two elastic claws 212. When the first connecting part 202 is inserted into the connecting inner hole 207 of the second connecting part 201, at the same time, the second connecting part 201 extends into the space surrounded by the two elastic claws 212, and the clamping blocks 217 on the elastic claws 212 are then clamped in the annular clamping protrusion or the annular clamping groove on the outer side surface of the second connecting part 201, realizing the connection between the first connecting part 202 and the second connecting part 201. The annular clamping protrusion and the annular clamping groove in this embodiment may not be annular, as long as the clamping protrusions on the elastic claws 212 are clamped into the annular clamping protrusion or the annular clamping groove. When it is necessary to pull out the first connecting part 202 from the second connecting part 201, a person can bend the two elastic claws 212 outward, and then pull out the first connecting part 202.

[0046] No matter which of the above methods is adopted, the first connecting member 202 and the second connecting member 201 can be quickly connected or disassembled, shortening the time for connecting the dental handpiece to the oil injector and achieving quick connection.

[0047] Further, in one embodiment, the above elastic pressing pieces 214 are arranged in a circular pattern along the circumference of the insertion hole 205, including split and integral elastic pressing pieces. The elastic pressing pieces are spaced along their circumferences and arranged in a circular pattern. As Figure 4 shown, arranging the elastic pressing pieces in a circular pattern not only matches the shape of the body of the dental handpiece, but also the arc-shaped setting can increase the contact area with the body of the dental handpiece and increase the pressing force. The inner diameter of the circle formed by the four elastic pressing pieces 214 is slightly larger than the diameter of the body of the dental handpiece for the body of the dental handpiece to pass through. The thickness of the elastic pressing piece 214 decreases cyclically in turn in the circumferential direction. Here, the sequential decrease is the gradual change process of the thickness of the elastic pressing piece 214 when viewed from the upward view of the connecting component 2 and in the counterclockwise direction perspective. As Figure 4 shown; of course, it can also be said in another way, that is, when viewed from the upward view of the connecting component 2 and in the clockwise direction perspective, the thickness of the elastic pressing piece 214 gradually increases, as Figure 4 shown. After the elastic pressing piece 214 is inserted into the installation inner hole 102, rotate the locking member 1 clockwise, so that the pressing protrusion 101 continuously squeezes towards the thicker side of the elastic pressing piece 214 in the circumferential direction. Then, under the action of the pressing protrusion 101, the strength of the extension end of the elastic pressing piece 214 protruding from the connecting component 2 is small. Therefore, the elastic pressing piece 214 generates elastic deformation towards the inside at this end. The elastic pressing pieces 214 all generate elastic deformation towards the inside, making the installation space surrounded by the elastic pressing pieces 214 smaller, thereby pressing the body of the dental handpiece and achieving quick connection.

[0048] Conversely, when it is necessary to remove the dental handpiece, first rotate the locking member 1 counterclockwise. The pressing protrusion 101 on the inner wall of the installation inner hole 102 continuously rotates towards the thinner side of the elastic pressing piece 214 in the circumferential direction. At the same time, the acting force of the pressing protrusion 101 on the elastic pressing piece 214 continuously decreases, and the elastic pressing piece 214 returns to its initial state (that is, the extension end protruding from the end face of the connecting component 2 does not deform or generates very small deformation so that it is not enough to press the body of the dental handpiece). Then, the dental handpiece can be easily pulled out of the installation inner hole 102 by hand, and the oil pipe on the dental handpiece can be pulled out of the insertion hole 205.

[0049] In one embodiment, as Figures 1-5 shown, especially in Figure 2As can be seen, the above elastic pressing piece 214 is a split type, including at least two elastic pressing claws 214a. In this embodiment, four elastic pressing claws 214a are provided. The four elastic pressing claws 214a are arranged in a circular pattern along the circumference of the jack 205. The installation space is surrounded by the four elastic pressing claws 214a. Each elastic pressing claw 214a increases in sequence in the clockwise direction along the circumference of the jack 205, and decreases in sequence in the counterclockwise direction. Figure 4 It can be seen.

[0050] However, in an alternative embodiment, two elastic pressing claws 214a can also be provided. The two elastic pressing claws 214a are symmetrically arranged relative to the jack 205, that is, the two elastic pressing claws 214a generate elastic deformation under the action of the locking member 1 to clamp the body of the dental handpiece, thereby achieving connection.

[0051] In one embodiment, the structure of the above elastic pressing piece can also be designed as the following structure, as Figure 6 shown, the elastic pressing piece 214 is an integral ring structure. The thickness of the elastic pressing piece 214 decreases or increases cyclically along its circumference. The difference in its thickness can be achieved by machining the outer wall portion of the elastic pressing piece 214. When the locking member 1 is inserted, by rotating the locking member 1, the elastic pressing piece 214 can still be squeezed, causing the elastic pressing piece 214 to deform and press the dental handpiece tightly.

[0052] In one embodiment, as Figure 7 shown, for the deformation and pressing method of the above elastic pressing piece 214, the following method can also be adopted. Specifically, the above elastic pressing piece 214 can be an integral or split type. The pressing protrusion 101 on the inner wall of the installation inner hole 102 is an integral ring, and the inner diameter of the pressing protrusion 101 gradually decreases along the axial direction, so that the installation inner hole 102 is in the shape of a tapered hole. The large-diameter end of the installation inner hole 102 is the insertion end of the elastic pressing piece 214. In this way, when the elastic pressing piece 214 is continuously inserted into the installation inner hole 102, the force of the inner hole on the locking member 1 on the elastic pressing piece 214 continuously increases until the extension end of the elastic pressing piece generates elastic deformation to tightly press the body of the dental handpiece, and the purpose of quick connection can also be achieved.

[0053] Furthermore, in order to prevent the locking member from coming off or sliding off the elastic pressing piece 214 after the elastic pressing piece 214 is inserted into the mounting inner hole 102 of the locking member, the connecting component 2 has a card slot 211, and the locking member 1 has a card protrusion 104. Specifically, in the present application, two card protrusions 104 are provided, and the two card protrusions 104 are specifically provided on the two connecting claws 103 on the locking member 1. The two connecting claws 103 protrude and extend along the axial direction of the mounting inner hole 102 toward the end surface of the locking member 1 close to the elastic pressing piece 214, so that the manual operation can be performed by prying the connecting claws 103 disassembles the locking member 1 and the connecting component 2, and the two latching protrusions 104 are located on the inner side of the connecting claw 103. When the elastic pressing piece 214 is inserted into the installation inner hole 102, it is latched in the latching groove 211, thereby further realizing the connection between the locking member 1 and the connecting component 2 and improving the connection ability. Because the locking member and the connecting component 2 are connected only by the clamping force between the two, it is inevitable that the locking member 1 will fall off or slide out of the elastic pressing piece 214. The provision of the latching protrusion 104 and the latching groove 211 can strengthen the connection between the locking member 1 and the connecting component 2.

[0054] Alternatively, the setting positions of the above-mentioned slot 211 and the locking protrusion 104 can also be interchangeable. The above-mentioned slot 211 is set on the inner side surface of the two connecting claws 103 of the locking member 1, and the above-mentioned locking protrusion 104 is set on the connecting component 2. Similarly, when the elastic pressing piece 214 is inserted into the installation inner hole 102, the locking protrusion 104 is inserted into the slot 211 to further connect the locking member 1 with the connecting component 2.

[0055] When the locking member 1 is rotated, the locking member 1 and the elastic pressing piece 214 are locked, and the arc length of the above-mentioned slot 211 must be greater than the arc length of the locking member 104. Regardless of whether the slot 211 is set on the locking member 1 or the connecting component 2, both ends of the slot 211 are closed ends, so as to prevent the locking member 104 from moving out of the slot 211 when moving in the slot 211. Because when the locking member rotates relative to the connecting component 2, the locking member 104 or the locking member 104 on the connecting component 2 must slide in the slot 211. At the same time, in order to ensure its connectivity, the slot 211 needs to give the locking member 104 a certain amount of moving space to meet the relative rotation requirements between the locking member 1 and the elastic pressing piece 214.

[0056] Furthermore, the structure of the first connecting member 202 specifically includes a connecting body and a sealing member 206 .

[0057] Among them, the connecting body has an assembly inner hole 203, and the direction of the assembly inner hole 203 is the same as that of the installation inner hole 102. The seal 206 is made of rubber. The seal 206 is installed in the assembly inner hole 203 by interference fit. In this embodiment, the above-mentioned jack 205 is provided on the seal 206, and the direction of the jack 205 is the same as that of the assembly inner hole 203. At this time, the diameter of the jack 205 is slightly smaller than or equal to the diameter of the oil pipe of the dental handpiece and the diameter of the oil pipe 215 on the oil injector. When inserting the oil pipe on the dental handpiece into the jack 205, due to the interference fit and the fact that the seal 206 itself is made of rubber, it can play a sealing role when inserted, so there is no need to separately set a flexible sealing ring. By setting the connecting component 2 into two parts, namely the connecting body and the seal 206, and setting the seal 206 and the connecting body in a detachable manner, it is convenient for the later maintenance and cleaning of the entire connector, and at the same time convenient for the replacement of each component.

[0058] In some embodiments, in addition to the interference fit between the above-mentioned seal 206 and the assembly inner hole 203 of the connecting body, however, in some embodiments, the above-mentioned seal 206 can also be made of the same material as the connecting body, that is, both can be made of stainless steel, and the seal 206 and the connecting body are of an integral structure, and the jack 205 can be directly provided on the connecting component 2.

[0059] Based on the embodiment where the above-mentioned jack 205 is provided on the seal 206, annular protrusions 213 protruding inward are respectively provided at both ends close to the jack 205. The annular protrusions 213 form a sealing ring. Since the material of the seal 206 itself is rubber, a protrusion is integrally formed on the inner wall of the jack 205 on it to form a sealing ring, which avoids the process of separately setting a sealing ring. In addition, the annular protrusion 213 can also facilitate the insertion of the oil pipe of the dental handpiece or the oil pipe on the oil injector into the jack 205.

[0060] The annular protrusion 213 on the inner wall of the above-mentioned jack 205 can also be provided at the end for inserting the oil pipe of the dental handpiece, because in actual use, the oil pipe of the dental handpiece needs to be frequently inserted into or pulled out of the jack 205, and the sealing here is particularly important to prevent oil leakage here.

[0061] Further, a guiding groove 204 is provided in the first connecting member 202 along the axial direction of the connecting inner hole 207. The number of guiding grooves 204 can be one, two, three, etc. The specific number of settings is determined according to the size of the first connecting member 202. And a guiding member 210 is provided on the second connecting member 201 along the radial direction of the connecting inner hole 207. The guiding member 210 can be a guiding rod, a guiding strip or other bolts, studs, etc. passing through the through hole on the second connecting member 201. When inserting the first connecting member 202 into the connecting inner hole 207, the guiding member 210 is pre-aligned with the guiding groove 204. During the continuous insertion process, the guiding member 210 enters the guiding groove 204. At this time, the jack 205 is aligned with the oil pipe 215 on the dental oil injector while inserting, avoiding the cumbersome process of aligning by repeatedly rotating the first connecting member 202 and shortening the alignment time. In addition, if the operator does not want to remove the first connecting member 202 from the second connecting member 201 and wants to pull out the dental handpiece from the jack 205, the locking member 1 can also be rotated counterclockwise so that the locking member 1 no longer presses the body of the dental handpiece to pull out the dental handpiece. At this time, the guiding groove 204 and the guiding member 210 can also play a role in preventing the relative rotation between the first connecting member 202 and the second connecting member 201, avoiding the problem that the first connecting member 202 rotates relative to the second connecting member 201 when the locking member 1 is rotated, resulting in the inability of the locking member 1 to rotate relative to the elastic pressing piece 214.

[0062] The present application also protects a dental handpiece oil injector, which includes the above-mentioned dental handpiece quick connector. In addition, it also includes the above-mentioned housing 3. The number of the above-mentioned dental handpiece quick connectors is several, such as one, two, three... In this embodiment, specifically two are provided. The specific number of settings is determined according to the size and volume of the dental handpiece oil injector. And each dental handpiece quick connector can be connected to the housing 3 of the dental handpiece oil injector through the connection hole on the second connecting member 201, the way of bolt connection or the threaded hole 218, the way of screw connection.

[0063] A detecting member 4 can also be provided on the dental handpiece oil injector of the present application. The detecting member 4 is used to detect whether the dental handpiece is inserted into the oil injector. The specific installation position can be as follows. There is a light hole on the end cover 209 of the second connecting member 201, and a guide rod 216 is movably placed in the light hole. The guide rod 216 can be a smooth rod or can be replaced by other bolts, screw rods, etc. The detecting member 4 can be a contact switch or a travel switch. And the above-mentioned detecting member 4 is provided on the housing 3 of the dental oil injector, and its installation position is vertically aligned with the light hole 216. When the first connecting member 202 is inserted into the connecting inner hole 207 of the second connecting member 201, the first connecting member 202 pushes the guide rod 216 to move upward, and the guide rod 216 triggers the travel switch or the contact switch, so that the detecting member 4 obtains the insertion signal of the dental handpiece.

[0064] The above specific implementation manners shall not be used as a limitation on the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the implementation manners of the present invention shall fall within the protection scope of the present invention.

[0065] Where the present invention is not described in detail, it is common knowledge for those skilled in the art of this technology.

Claims

1. A rapid connector for a dental handpiece, connected to a dental handpiece oil injector, characterized in that Comprising: A connecting component, the connecting component having a jack for inserting an oil pipe, the connecting component being provided with an elastic pressing piece along the axial direction of the jack, the elastic pressing piece protruding and extending towards one side of the connecting component to form a cavity with an installation space inside; A locking member, the locking member having an installation inner hole, the direction of the installation inner hole being the same as the direction of the jack, the installation inner hole having a pressing protrusion protruding inwards, when the elastic pressing piece is inserted into the installation inner hole, the pressing protrusion presses the elastic pressing piece, so that the elastic pressing piece clamps the dental handpiece extending into the installation space, thereby connecting the dental handpiece with the connecting component; The connecting component includes: A first connecting piece, the jack is arranged on the first connecting piece, the first connecting piece is provided with at least two elastic clamping claws along the axial direction of the jack; A second connecting piece, the second connecting piece is fixed to the oil injector of the dental handpiece, the second connecting piece has a connecting inner hole, the direction of the connecting inner hole is the same as the direction of the jack, the first connecting piece can be inserted into the connecting inner hole, the second connecting piece has a clamping portion, when the first connecting piece is inserted into the connecting inner hole, the elastic clamping claws are clamped with the clamping portion, thereby realizing the detachable connection between the first connecting piece and the second connecting piece; The pressing protrusion is annularly arranged on the inner wall of the installation inner hole, the inner diameter of the pressing protrusion gradually decreases or increases along the axial direction of the installation inner hole, so that the installation inner hole is arranged as a tapered hole, the large-diameter end of the installation inner hole is the insertion end of the elastic pressing piece, and the elastic pressing piece is gradually squeezed when inserted into the installation inner hole, thereby connecting the dental handpiece with the connecting component.

2. The quick connector for dental handpiece according to claim 1, wherein, The elastic pressing piece is circularly arranged along the circumference of the jack, and the thickness of the elastic pressing piece decreases or increases periodically in its circumferential direction. At least two pressing protrusions are arranged, and the two pressing protrusions are spaced along the circumferential direction of the installation inner hole. After the elastic pressing piece is inserted into the installation inner hole, by rotating the locking member, the pressing protrusion presses the elastic pressing piece, so that the elastic pressing piece clamps the dental handpiece, thereby connecting the dental handpiece with the connecting component.

3. A quick connector for a dental handpiece according to claim 2, characterized in that, The elastic pressing piece is split, including at least two elastic pressing claws, the elastic pressing claws are circularly arranged along the circumference of the jack, and the elastic pressing claws increase or decrease in sequence along the circumference of the jack.

4. A rapid connector for a dental handpiece according to claim 2, characterized in that, The elastic pressing piece is an integral annular structure, and the thickness of the elastic pressing piece decreases or increases periodically along its circumference.

5. A rapid connector for a dental handpiece according to claim 1 or 2, characterized in that, The connecting component has a clamping groove or a clamping protrusion, the locking member has a clamping protrusion or a clamping groove, and the clamping protrusion is clamped into the clamping groove when the elastic pressing piece is inserted into the installation inner hole, and the arc length of the clamping groove is greater than the arc length of the clamping protrusion.

6. A quick connector for a dental handpiece according to claim 1, characterized in that, The first connecting piece includes: A connecting body, the connecting body having an assembly inner hole, the direction of the assembly inner hole being the same as the direction of the installation inner hole; A flexible seal, the flexible seal is inserted into the assembly inner hole and is connected with the assembly inner hole by interference fit. The jack is arranged on the flexible seal along the direction of the assembly inner hole, and the diameter of the jack is not greater than the diameter of the oil pipe.

7. A quick connector for a dental handpiece according to claim 1 or 5, characterized in that, The first connecting member is provided with a guiding groove along the axial direction of the connecting inner hole, and the second connecting member is provided with a guiding member along the radial direction of the connecting inner hole. When the first connecting member is inserted into the connecting inner hole, the guiding member is slidably arranged in the guiding groove.

8. An oil injector for a dental handpiece, characterized in that, It includes the dental handpiece quick connector according to claim 1, and further includes a housing. A plurality of the dental handpiece quick connectors are provided, and a connecting portion is provided on the connecting assembly of each of the dental handpiece quick connectors. The dental handpiece quick connector is arranged on the housing through the connecting portion.

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