Snap spring structure
By employing a circumferentially symmetrical distribution of three or more steel balls and a limiting groove design in the snap ring structure of the root canal preparation machine, the problem of unstable connection between the curved handpiece and the main unit is solved, achieving higher stability and reliability.
Patent Information
- Application Number
- CN202520263678.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-19
AI Technical Summary
In the existing circlip structure of root canal preparation machines, the connection between the handpiece and the main unit is unstable and prone to shaking, especially during multi-angle rotation and insertion/removal, which poses a risk of loosening.
Three or more steel balls are symmetrically distributed around the circumference, and the radial rotation of the snap ring body is restricted by the design of the limiting groove and the rotating shaft to enhance stability. The cooperation of the motor fixing seat and the fixing ring ensures the stable installation of the bending handpiece.
It improves the connection stability between the curved handset and the host, reduces the risk of shaking and loosening, and ensures reliability during multi-angle rotation and insertion/removal processes.
Smart Images
Figure CN223715826U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to root canal preparation machine technical field, specifically a kind of clasp spring structure. BACKGROUND
[0002] When doing root canal treatment to tooth, root canal preparation machine needs to be used, and the bending machine and the root canal preparation machine host are the most important components, and one host can be used with multiple bending machines with different speed ratios;During use, the doctor will adjust the angle of the bending machine according to the position of the tooth treated by root canal, so that the doctor can operate more conveniently, and the connection between the bending machine and the host should be stable and reliable during use, and cannot be obviously shaken and loosened;After root canal treatment of a patient is completed each time, the bending machine must be pulled out of the host for disinfection, so the bending machine and the host not only need to be frequently plugged and unplugged, but also need to be rotated at multiple angles.
[0003] In the clasp spring structure of the previous root canal preparation machine, one clasp spring cooperates with two circumferentially symmetrical steel balls, and since the hardware between the bending machine and the host is gap-fitted, the symmetrical steel balls only have elastic force at 0 degrees and 180 degrees of the circumference, and since the span is large, the most prone to shaking problem is at 90 degrees and 270 degrees in the middle of the 0-degree and 180-degree circumferences.
[0004] Based on this, a clasp spring structure is now provided, which can eliminate the drawbacks of the existing device. CONTENT OF THE UTILITY MODEL
[0005] The utility model aims at providing a clasp spring structure to solve the problem of easy shaking and instability of the bending machine installation in the background art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:
[0007] A clasp spring structure includes a clasp spring body, the clasp spring body includes a spring body, a limiting groove is formed in the inner wall of the spring body, an open end is formed in the outer wall of the limiting groove, and a motor fixing seat is provided on the outside of the spring body.
[0008] On the basis of the above technical solutions, the utility model also provides the following optional technical solutions:
[0009] In an optional solution, the motor fixing seat includes a seat body, the seat body is installed on the outside of the spring body, a rotating shaft is provided in the inside of the seat body, the rotating shaft includes a shaft body, and the shaft body is rotatably installed in the inside of the seat body;
[0010] First and second grooves are respectively formed on the outside of the shaft body, and a plurality of conical holes are equally and annularly formed in the inside of the first and second grooves;
[0011] The outer part of the shaft body is provided with a convex rib which is installed on the shaft body by welding or is designed as an integral type with the shaft body.
[0012] The inner part of each of the plurality of conical holes is provided with a steel ball, and the clamp spring body is installed in the inner part of the first groove and the second groove.
[0013] In an alternative, the clamp spring body comprises two spring bodies which are respectively installed in the inner part of the first groove and the second groove, the inner wall of the spring body is provided with a limiting groove, and the outer wall of the limiting groove is provided with an open end.
[0014] In an alternative, the limiting groove is matched with the steel ball, and the open end is matched with the convex rib.
[0015] In an alternative, the outer part of one end of the seat body is provided with a second threaded groove, the inner part of the other end of the seat body is provided with an outer cylinder, the outer part of the outer cylinder is provided with a plurality of circular grooves which are equidistantly arranged in a ring shape, the number of the circular grooves is in a multiple relationship with the number of the conical holes, and the inner wall of the outer cylinder is provided with a third threaded groove.
[0016] In an alternative, one end of the seat body is provided with a fixing ring.
[0017] In an alternative, the fixing ring comprises a ring body which is threadedly connected to the outer part of the seat body through the second threaded groove, the inner wall of the ring body is provided with a first threaded groove which is matched with the second threaded groove, and one end of the ring body is provided with a second plane.
[0018] In an alternative, the inner part of the shaft body is provided with a bending machine.
[0019] In an alternative, the bending machine comprises a machine body which is installed in the inner part of the shaft body, one end of the machine body is provided with a bevel, a cylindrical surface, a positioning groove and a first plane from right to left, and the positioning groove is matched with the steel ball.
[0020] Compared with the prior art, the present application has the following advantages:
[0021] 1. The three or more steel balls are arranged in a circumferentially symmetrical manner, so that the span of the steel balls is reduced and the shaking of the bending machine after insertion is reduced.
[0022] 2. The open end of the clamp spring body is limited by the convex rib of the rotating shaft, so that the clamp spring body can only expand radially and cannot rotate radially, thereby improving the stability of the bending machine installation. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0024] Figure 2 It is the disassembling structure schematic view of the utility model.
[0025] Figure 3 It is the motor fixed seat structure schematic view of the utility model.
[0026] Figure 4 It is the rotating shaft structure schematic view of the utility model.
[0027] Figure 5 It is the clasp spring main body structure schematic view of the utility model.
[0028] Figure 6 It is the fixed ring structure schematic view of the utility model.
[0029] Figure 7 It is the bending mobile phone installation structure schematic view of the utility model.
[0030] Mark annotation: 1, bending mobile phone;101, machine body;102, first plane;103, positioning groove;104, cylindrical surface;105, inclined plane;2, fixed ring;201, ring body;202, first thread groove;203, second plane;3, rotating shaft;301, shaft body;302, first recess;303, second recess;304, conical hole;305, convex rib;4, steel ball;5, clasp spring main body;501, spring body;502, limiting groove;503, open end;6, motor fixed seat;601, seat body;602, second thread groove;603, circular recess;604, third thread groove. DETAILED DESCRIPTION
[0031] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with the drawing and example, and the utility model is further detailed.
[0032] In one embodiment, as Figures 1-7As shown in the figure, a kind of clamp spring structure, including clamp spring main body 5, the clamp spring main body 5 includes spring body 501, the inner wall of the spring body 501 is provided with limiting groove 502, the outer wall of the limiting groove 502 is provided with opening end 503, the outside of the spring body 501 is equipped with motor fixed seat 6, the motor fixed seat 6 includes seat body 601, the seat body 601 is installed on the outside of spring body 501, the inside of the seat body 601 is equipped with rotating shaft 3, the rotating shaft 3 includes shaft body 301, the shaft body 301 is rotatably installed in the inside of seat body 601, the outer side of the shaft body 301 is respectively provided with first recess 302 and second recess 303, a plurality of conical holes 304 are equally spaced annularly formed in the inside of the first recess 302 and the second recess 303, the outside of the shaft body 301 is equipped with convex rib 305, the convex rib 305 is installed with the shaft body 301 by welding or is integrally designed with the shaft body 301, the inside of a plurality of the conical holes 304 is equipped with steel ball 4, the clamp spring main body 5 is installed in the inside of the first recess 302 and the second recess 303, the limiting groove 502 is matched with the steel ball 4, and the opening end 503 is matched with the convex rib 305.
[0033] In the embodiment, when the rotating shaft 3 and the motor fixed seat 6 are installed, first, the steel ball 4 is installed with the rotating shaft 3 and the clamp spring main body 5, the steel ball 4 is placed into the inside of the conical hole 304, and then the two spring bodies 501 are installed into the inside of the first recess 302 and the shaft body 301 respectively, at this time, the steel ball 4 is located between the conical hole 304 and the limiting groove 502, and the opening end 503 is located outside the convex rib 305, so that the installation of the clamp spring main body 5 is effectively completed.
[0034] In one embodiment, as shown in Figure 3 、 Figure 4 and Figure 7 , the outside of one end of the seat body 601 is provided with second threaded groove 602, the inside of the other end of the seat body 601 is provided with outer cylinder, a plurality of circular recesses 603 are equally spaced annularly formed on the outside of the outer cylinder, and the number of the circular recesses 603 is in multiple relationship with the conical holes 304, the inner wall of the outer cylinder is provided with third threaded groove 604, when the rotating shaft 3 is inserted into the inside of the motor fixed seat 6, one end of the shaft body 301 is sleeved to the outside of the outer cylinder, because the outside of the outer cylinder is provided with chamfer, when the steel ball 4 in the second recess 303 contacts with the outer cylinder, the clamp spring main body 5 is expanded, so that the rotating shaft 3 can continue to move into the inside of the motor fixed seat 6, when the steel ball 4 moves to the circular recess 603, because the clamp spring main body 5 resets, the steel ball 4 enters the inside of the circular recess 603, so that the installation of the rotating shaft 3 and the motor fixed seat 6 is completed.
[0035] In one embodiment, as shown in Figure 3 and Figure 6As shown, one end of the seat body 601 is provided with a fixing ring 2, the fixing ring 2 comprises a ring body 201, the ring body 201 is threadedly connected outside the seat body 601 through a second threaded groove 602, the inner wall of the ring body 201 is provided with a first threaded groove 202 matched with the second threaded groove 602, one end of the ring body 201 is provided with a second plane 203, the fixing ring 2 is threadedly connected with the motor fixing seat 6 through the cooperation of the second threaded groove 602 and the first threaded groove 202, so that the rotating shaft 3 can only rotate inside the motor fixing seat 6 and cannot produce axial displacement, thereby improving the stability.
[0036] In one embodiment, as shown in Figure 2 and Figure 7 As shown, the inside of the shaft body 301 is provided with a bending handset 1, the bending handset 1 comprises a handset body 101, one end of the handset body 101 is mounted inside the shaft body 301, one end of the handset body 101 is provided from right to left with an inclined plane 105, a cylindrical surface 104, a positioning groove 103 and a first plane 102, the positioning groove 103 is matched with the steel ball 4, when the bending handset 1 is inserted, the inclined plane 105 on the right side of the bending handset 1 first contacts the steel ball 4 in the first groove 302, when the bending handset 1 continues to be inserted, the inclined plane 105 on the right side of the bending handset 1 makes the steel ball 4 slowly move radially outward, so that the clamping spring body 5 is expanded to form a spring effect, the opening end 503 of the clamping spring body 5 is limited by the convex rib 305 of the rotating shaft 3, so that the clamping spring body 5 can only expand radially and cannot rotate radially, because the limiting groove 502 inside the clamping spring body 5 and the steel ball 4 form a concentric circle, and the steel ball 4 and the conical hole 304 of the rotating shaft 3 form a concentric circle, so the clamping spring body 5 cannot move axially and only expands radially, when the cylindrical surface 104 of the bending handset 1 contacts the steel ball 4, the steel ball 4 and the clamping spring body 5 are simultaneously expanded to the maximum value, at this time the spring force of the clamping spring body 5 is the largest, when the bending handset 1 continues to be inserted, the positioning groove 103 of the bending handset 1 contacts the steel ball 4, the steel ball 4 falls along the positioning groove 103 of the bending handset 1, at this time the positioning groove 103 of the bending handset 1 and the steel ball 4 form an axial clamping force, so that the bending handset 1 is not easy to be loosened from the main machine, when the first plane 102 of the bending handset 1 contacts the second plane 203 of the fixing ring 2, the bending handset 1 is limited and cannot be inserted any more, at this time the axial pulling-out force reaches the maximum value, when the bending handset 1 is pulled out, the positioning groove 103 of the bending handset 1 pushes the steel ball 4 to expand, the steel ball 4 is subjected to the reaction force of the expansion of the clamping spring body 5, when the expansion force of the steel ball 4 is greater than the reaction force of the expansion of the clamping spring body 5, the bending handset 1 can be pulled out.
[0037] The above embodiment discloses a clamp spring structure, wherein when the rotating shaft 3 is installed with the motor fixing seat 6, the steel ball 4 is first installed with the rotating shaft 3 and the clamp spring main body 5, the steel ball 4 is placed in the inside of the conical hole 304, and then the two spring bodies 501 are installed in the inside of the first recess 302 and the shaft body 301, at this time, the steel ball 4 is located between the conical hole 304 and the limiting groove 502, and the open end 503 is located outside the convex rib 305, effectively completing the installation of the clamp spring main body 5, when the rotating shaft 3 is inserted into the inside of the motor fixing seat 6, one end of the shaft body 301 is sleeved outside the outer cylinder, because the outer cylinder is provided with a chamfer, when the steel ball 4 in the second recess 303 contacts the outer cylinder, the clamp spring main body 5 is expanded, so that the rotating shaft 3 can continue to move into the inside of the motor fixing seat 6, when the steel ball 4 moves to the circular recess 603, because the clamp spring main body 5 resets, the steel ball 4 enters the inside of the circular recess 603, thereby completing the installation of the rotating shaft 3 and the motor fixing seat 6, through the cooperation of the second screw groove 602 and the first screw groove 202, the fixing ring 2 is screwed with the motor fixing seat 6, so that the rotating shaft 3 can only rotate in the inside of the motor fixing seat 6, and axial displacement is not generated, stability is improved, when the bending hand set 1 is inserted, the inclined surface 105 on the right side of the bending hand set 1 first contacts the steel ball 4 of the first recess 302, when the bending hand set 1 continues to be inserted, the inclined surface 105 on the right side of the bending hand set 1 makes the steel ball 4 slowly move radially outward, so that the clamp spring main body 5 is expanded to form a spring effect, the open end 503 of the clamp spring main body 5 is limited by the convex rib 305 of the rotating shaft 3, so that the clamp spring main body 5 can only expand radially, when the bending hand set 1 continues to be inserted, the positioning groove 103 of the bending hand set 1 contacts the steel ball 4, the steel ball 4 falls along the positioning groove 103 of the bending hand set 1, at this time, the positioning groove 103 of the bending hand set 1 and the steel ball 4 form an axial clamping force, so that the bending hand set 1 is not easy to be loosened from the main machine.
[0038] The above only describes specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims
1. A snap ring structure, comprising a snap ring body (5), characterized in that: The snap ring body (5) includes a spring body (501), the inner wall of the spring body (501) is provided with a limiting groove (502), the outer wall of the limiting groove (502) is provided with an open end (503), and the outside of the spring body (501) is provided with a motor fixing seat (6).
2. The snap ring structure according to claim 1, characterized in that, The motor mounting base (6) includes a base body (601), which is mounted on the outside of the spring body (501). The base body (601) has a rotating shaft (3) inside, which includes a shaft body (301) and is rotatably mounted inside the base body (601). The outer side of the shaft (301) is provided with a first groove (302) and a second groove (303), and the interior of the first groove (302) and the second groove (303) are provided with a plurality of conical holes (304) at equal intervals in a ring. The shaft (301) is provided with a protruding rib (305) on the outside. The protruding rib (305) is installed on the shaft (301) by welding or is an integral design with the shaft (301). Each of the conical holes (304) is provided with a steel ball (4), and the snap ring body (5) is installed inside the first groove (302) and the second groove (303).
3. The snap ring structure according to claim 2, characterized in that, The limiting groove (502) is adapted to the steel ball (4), and the open end (503) is adapted to the rib (305).
4. A snap ring structure according to claim 2, characterized in that, The outer side of one end of the base (601) is provided with a second threaded groove (602), and the inner side of the other end of the base (601) is provided with an outer cylinder. The outer cylinder is provided with circular grooves (603) at equal intervals on its outer side, and the number of circular grooves (603) is a multiple of the number of conical holes (304). The inner wall of the outer cylinder is provided with a third threaded groove (604).
5. A snap ring structure according to claim 2, characterized in that, One end of the base (601) is provided with a fixing ring (2).
6. A snap ring structure according to claim 5, characterized in that, The fixing ring (2) includes a ring body (201), which is threaded to the outside of the base body (601) through a second threaded groove (602). The inner wall of the ring body (201) is provided with a first threaded groove (202) that is adapted to the second threaded groove (602). One end of the ring body (201) is provided with a second plane (203).
7. A snap ring structure according to claim 2, characterized in that, The shaft (301) has a curved handpiece (1) inside.
8. A snap ring structure according to claim 7, characterized in that, The curved handpiece (1) includes a body (101), one end of which is installed inside the shaft (301). The body (101) has a sloping surface (105), a cylindrical surface (104), a positioning groove (103) and a first plane (102) from right to left. The positioning groove (103) is adapted to the steel ball (4).