High-coaxiality light guide bar fixing structure of light curing machine

Abstract

The utility model relates to the technical field of medical dental equipment, in particular to a high-coaxiality light guide bar fixing structure of a photocuring machine, which comprises a casing and a light guide bar, a limit casing with two through ends is fixed at one end of the casing, an opening for accommodating the light guide bar to be inserted into the limit casing is arranged at one end of the casing in a penetrating manner, and the light guide bar is fixed on the casing. An illuminating lamp module is arranged at the center of the end, away from the opening, of the interior of the limiting shell, one end of the light guide bar is detachably inserted into the limiting shell and extends to the side close to the illuminating lamp module, one end of the limiting shell extends to the exterior of the machine shell, and the limiting shell outside the machine shell is coaxially and fixedly connected with a shell clamping ring; and the shell clamping ring is matched with the light guide rod and is used for radially positioning the light guide rod, reducing assembly relations and special structural design, further reducing accumulated errors and reducing deviation and loss of a light path caused by line deviation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical dental equipment, in particular to a light guide rod fixing structure for a light curing machine with high coaxiality. Background Art

[0002] A light-curing machine uses a transmission structure to illuminate a photosensitive resin, emitting light from a lamp bead within a specific wavelength range. This light propagates through a light guide rod. The better the coaxiality between the light guide rod and the lamp bead, the more consistent the output light source of the lamp bead and the light source of the output shaft. This reduces the risk of light deviation from the transmission path due to poor coaxiality.

[0003] The commonly used structure on the market is basically to connect the shell clamp and the lamp bead limiting shell to the plastic shell respectively, but the shell clamp and the lamp group limiting shell have no direct positioning relationship. This leads to the light guide rod installed in the shell clamp and the lamp bead positioning shell and the lamp bead installed in the lamp bead positioning shell. Due to the variety of matching parts, complex structure, and high cumulative assembly error, it is difficult to ensure coaxiality, or the coaxiality is poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a light guide rod fixing structure for a light curing machine with high coaxiality, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-coaxiality light-curing machine light guide rod fixing structure, comprising a casing and a light guide rod, wherein a limiting shell with two through-ends is fixed to one end of the casing, an opening is provided through one end of the casing to accommodate the light guide rod to be inserted into the interior of the limiting shell, a lighting module is provided at the center of the limiting shell away from one end of the opening, one end of the light guide rod is detachably inserted into the interior of the limiting shell and extends to a side close to the lighting module, one end of the limiting shell extends to the outside of the casing, and the limiting shell outside the casing is coaxially fixedly connected to a shell clamp, the shell clamp and the light guide rod are adapted to each other and are used for radial positioning of the light guide rod.

[0006] Furthermore, the light guide rod includes an inserting section that is movably inserted into the inner side of the limit shell and the outer shell clamp ring, and an inclined section that is integrally arranged at one end of the inserting section. A limiting portion is vertically extended on the outer peripheral wall of the inserting section, and the limiting portion abuts against one end of the outer shell clamp ring for axial positioning.

[0007] Furthermore, a plurality of O-rings are provided on the inner side wall of the limiting shell, and an annular groove adapted to the O-ring is provided on the outer peripheral wall of the plug-in section. The O-ring abuts against the outer peripheral wall of the annular groove to elastically clamp the light guide rod.

[0008] Furthermore, a plug-in portion is coaxially provided at one end of the limit shell, a positioning groove adapted to the plug-in portion is provided inside the shell clamp ring, the shell clamp ring is threadedly connected to the outside of one end of the limit shell, and one end of the shell clamp ring is abutted against one end of the casing.

[0009] Furthermore, the lighting module includes a focusing cup, a gasket, a lamp bead and a fixing block arranged in sequence along the axial direction of the limiting shell. The focusing cup is movably set at one end close to the light guide rod through a limiting step. The gasket is set between the focusing cup and the lamp bead. The fixing block is threadedly connected to the inner side wall of the limiting shell for tightening the lamp bead, gasket and focusing cup on the limiting step.

[0010] Furthermore, a guide portion with gradually increasing size is provided at the edge of the central through hole at one end of the housing collar.

[0011] Furthermore, a plurality of annular positioning rings are provided on the inner side wall of the housing along its axial direction, and the annular positioning rings are coaxially arranged with the housing, and a plurality of positioning grooves adapted to the annular positioning rings are provided on the outer side wall of the limiting shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the high-coaxiality light guide rod fixing structure of the light curing machine is improved by detachably mounting the shell clamp ring on one end of the limit shell, and the coaxiality of the limit shell and the shell clamp ring is improved; the lighting module is mounted inside the limit shell, and the light guide rod is detachably plugged into the limit shell and one end of the shell clamp ring, thereby improving the coaxiality of the light guide rod and the lighting module; the structure is simple and practical, and the assembly relationship and special structural design are reduced, thereby reducing the cumulative error and reducing the deviation and loss of the light path caused by line offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a partial cross-sectional structural diagram of the utility model;

[0014] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0015] Figure 3 This is an explosion diagram of the utility model.

[0016] In the figure: 1. Casing; 101. Annular positioning ring; 2. Light guide rod; 201. Plug-in section; 2011. Annular groove; 202. Inclined section; 203. Limiting portion; 3. Limiting shell; 301. Plug-in portion; 4. O-ring; 5. Housing clamping ring; 501. Guide portion; 6. Focusing cup; 7. Gasket; 8. Lamp bead; 9. Fixing block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" can explicitly or implicitly include at least one of the features. For the purpose of the description and claims of the present invention and the above-mentioned drawings, the terms "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0019] See also Figure 1-3 The utility model provides an embodiment: a high-coaxiality light guide rod fixing structure for a light curing machine, comprising a housing 1 and a light guide rod 2. A limiting shell 3 with two through ends is fixed to one end of the housing 1. Specifically, a plurality of annular positioning rings 101 are provided on the inner side wall of the housing 1 along its axial direction, and the annular positioning rings 101 are coaxially arranged with the housing 1. A plurality of positioning grooves adapted to the annular positioning rings 101 are provided on the outer side wall of the limiting shell 3, so that the limiting shell 3 can be fixed to one end of the housing 1 to prevent axial movement.

[0020] One end of the casing 1 is provided with an opening for accommodating the light guide rod 2 to be inserted into the interior of the limit shell 3. A lighting module is provided at the center of the interior of the limit shell 3 away from the opening. One end of the light guide rod 2 is detachably plugged into the interior of the limit shell 3 and extends to a side close to the lighting module. Specifically, the lighting module includes a focusing cup 6, a gasket 7, a lamp bead 8 and a fixing block 9 arranged in sequence along the axial direction of the limit shell 3. The focusing cup 6 is movably arranged at one end close to the light guide rod 2 through a limiting step. One end of the lamp bead 8 is inserted into the focusing cup 6. The gasket 7 is arranged between the focusing cup 6 and the lamp bead 8 to prevent the light from being welded on the lamp bead 8. The point is in direct contact with the focusing cup 6. Because the focusing cup 6 is made of metal or other conductive materials, direct contact will cause a short circuit of the lamp bead 8. The fixing block 9 is threadedly connected to the inner wall of the limiting shell 3. By rotating the fixing block 9, the lamp bead 8 can be tightened to one end of the focusing cup 6, and then the focusing cup 6 is tightened to the limiting step on the inner wall of the limiting shell 3. The gasket 7 is tightened between the focusing cup 6 and the lamp bead 8 to play a fixing role. When working, after the lamp bead 8 is lit, the light is focused by the focusing cup 6 and directly enters the light guide rod 2. The light propagates through the light guide rod 2 and then irradiates the photocurable resin to cure the photosensitive resin.

[0021] One end of the limiting shell 3 extends to the outside of the casing 1, and the limiting shell 3 outside the casing 1 is coaxially fixedly connected to the shell clamp 5, the shell clamp 5 and the light guide rod 2 are adapted to each other and are used for radial positioning of the light guide rod 2. In this embodiment, the light guide rod 2 includes an inserting section 201 movably inserted into the inner side of the limiting shell 3 and the shell clamp 5 and an inclined section 202 integrally provided at one end of the inserting section 201. The inserting section 201 is specifically a cylindrical tubular structure. A limiting portion 203 is vertically extended on the outer peripheral wall of the inserting section 201, and the limiting portion 203 abuts against one end of the shell clamp 5 for axial positioning. During assembly, the inserting section 201 is directly inserted into the interior of the shell clamp 5 and the limiting shell 3 in sequence until the limiting portion 203 abuts against one end of the casing 1. At this time, a gap is reserved between the inserting section 201 and the focusing cup 6.

[0022] In this embodiment, two O-rings 4 are provided on the inner wall of the limiting shell 3, and an annular groove 2011 adapted to the O-ring 4 is provided on the outer peripheral wall of the plug-in section 201. The O-ring 4 abuts against the outer peripheral wall of the annular groove 2011 and is used to elastically clamp the light guide rod 2, thereby improving the firmness of the insertion of the light guide rod 2 and preventing it from shaking or loosening and falling off.

[0023] One end of the limiting shell 3 is coaxially provided with a plug-in portion 301, and the interior of the shell clamp 5 is provided with a positioning groove adapted to the plug-in portion 301. The shell clamp 5 is threadedly connected to the outside of one end of the limiting shell 3, and one end of the shell clamp 5 is abutted against one end of the casing 1. During assembly, the plug-in portion 301 is first inserted into the positioning groove, and then the shell clamp 5 is rotated to fix the shell clamp 5 and the limiting shell 3, which can improve the coaxiality of the limiting shell 3 and the shell clamp 5. The light guide rod 2 cooperates with the shell clamp 5, and the lighting module is arranged at the center of the limiting shell 3, which can then improve the coaxiality of the light guide rod 2 and the lighting module, thereby reducing the deviation and loss of the light path caused by line offset.

[0024] In this embodiment, a guide portion 501 with gradually increasing size is provided at the edge of the central through hole at one end of the housing collar 5 to facilitate the insertion of the light guide rod 2 .

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A light guide rod fixing structure for a light curing machine with high coaxiality, comprising a housing (1) and a light guide rod (2), characterized in that: A limiting shell (3) with two through ends is fixed to one end of the housing (1), an opening for accommodating the light guide rod (2) to be inserted into the limiting shell (3) is provided through one end of the housing (1), a lighting module is provided at the center of the limiting shell (3) away from one end of the opening, one end of the light guide rod (2) is detachably plugged into the limiting shell (3) and extends to a side close to the lighting module, one end of the limiting shell (3) extends to the outside of the housing (1), and the limiting shell (3) outside the housing (1) is coaxially fixedly connected to a shell clamp (5), and the shell clamp (5) is adapted to the light guide rod (2) and is used for radial positioning of the light guide rod (2).

2. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 1, characterized in that: The light guide rod (2) comprises an inserting section (201) movably inserted into the inner side of the limiting shell (3) and the outer shell clamping ring (5), and an inclined section (202) integrally provided at one end of the inserting section (201); a limiting portion (203) is vertically extended on the outer peripheral wall of the inserting section (201), and the limiting portion (203) abuts against one end of the outer shell clamping ring (5) for axial positioning.

3. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 2, characterized in that: A plurality of O-rings (4) are provided on the inner side wall of the limiting shell (3), and an annular groove (2011) adapted to the O-ring (4) is provided on the outer peripheral wall of the plug-in section (201), and the O-ring (4) abuts against the outer peripheral wall of the annular groove (2011) to elastically clamp the light guide rod (2).

4. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 1, characterized in that: One end of the limiting shell (3) is coaxially provided with a plug-in portion (301), and the interior of the housing clamp (5) is provided with a positioning groove adapted to the plug-in portion (301). The housing clamp (5) is threadedly connected to the outside of one end of the limiting shell (3), and one end of the housing clamp (5) abuts against one end of the housing (1).

5. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 1, characterized in that: The lighting module comprises a focusing cup (6), a gasket (7), a lamp bead (8) and a fixing block (9) which are sequentially arranged along the axial direction of the limiting shell (3); the focusing cup (6) is movably arranged at one end close to the light guide rod (2) through a limiting step; the gasket (7) is arranged between the focusing cup (6) and the lamp bead (8); and the fixing block (9) is threadedly connected to the inner side wall of the limiting shell (3) for tightening the lamp bead (8), the gasket (7) and the focusing cup (6) onto the limiting step.

6. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 1, characterized in that: A guide portion (501) with gradually increasing size is provided at the edge of the central through hole at one end of the housing clamping ring (5).

7. The high coaxiality light guide rod fixing structure for a light curing machine according to claim 1, characterized in that: A plurality of annular positioning rings (101) are provided on the inner side wall of the housing (1) along its axial direction, and the annular positioning rings (101) are coaxially arranged with the housing (1), and a plurality of positioning grooves adapted to the annular positioning rings (101) are provided on the outer side wall of the limiting housing (3).

Images