A protective plate fixing structure and a handheld dental X-ray machine

Abstract

The present application belongs to the technical field of dental medical equipment, and relates to a protective plate fixing structure and a handheld dental X-ray machine. The protective plate fixing structure includes: a beam limiting tube, a protective plate and a tube cover, the end of the beam limiting tube is provided with a supporting platform, the protective plate is connected to the supporting platform via a limiting structure, the tube cover is connected to the supporting platform or the limiting structure, and the tube cover and the supporting platform clamp the protective plate. The present application is simple to assemble, and the installed protective plate is stably and reliably fixed together with the beam limiting tube and the tube cover; in addition, the limiting structure can prevent the protective plate from rotating around the outer wall of the beam limiting tube, thereby realizing the circumferential limiting of the protective plate.

Description

Technical Field

[0001] The present application relates to the technical field of dental medical equipment, and more specifically, to a protective plate fixing structure and a handheld dental X-ray machine. Background Art

[0002] During the use of a handheld dental X-ray machine, the emitted X-rays are reflected and scattered by the patient or environmental surface, and some scattered radiation will return to the operator. We call this radiation stray radiation. In order to minimize the stray radiation, a protective plate for shielding the stray radiation is designed at the end of the beam limiting tube of the handheld dental X-ray machine. The protective plate is generally made of a transparent polymer material. It minimizes the impact of stray radiation on the operator as much as possible without blocking the operator's field of view, thereby further enhancing the overall safety performance of the handheld dental X-ray machine. However, in the prior art, the protective plate and the beam limiting tube are mostly connected by elastic parts such as silicone rings and rubber rings, which can be disassembled by hand, but there is a risk of the elastic parts falling off after aging, resulting in the protective plate being installed loosely and easily falling off. Utility Model Content

[0003] The technical solution of the present application is to provide a protective plate fixing structure and a handheld dental X-ray machine, which are used to solve the problem in the prior art that the protective plate is not securely installed and is easy to fall off.

[0004] In order to solve the above technical problems, the technical solution of the present application provides a protective plate fixing structure, which adopts the following technical solution:

[0005] A protective plate fixing structure comprises: a limiting tube, a protective plate and a tube cover, wherein a supporting platform is provided at the end of the limiting tube, the protective plate is connected to the supporting platform via a limiting structure, the tube cover is connected to the supporting platform or the limiting structure, and the tube cover and the supporting platform clamp the protective plate.

[0006] Furthermore, a support block is provided on a side of the supporting platform away from the cylinder cover, and the support block is connected to the outer wall of the restraining cylinder.

[0007] Furthermore, the limiting structure includes a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove is arranged on the protective plate, and the other is arranged on the supporting platform, and the limiting protrusion and the limiting groove are plugged into each other.

[0008] Furthermore, the protective plate has mounting holes passing through both sides; the supporting platform includes a first annular plate and a mounting tube, the two sides of the first annular plate are respectively connected to the mounting tube and the limiting tube, the limiting protrusion is arranged on the first annular plate, the limiting groove is arranged on the protective plate, the protective plate is sleeved on the mounting tube through the mounting hole, the tube cover is connected to the mounting tube, and the tube cover and the first annular plate clamp the protective plate.

[0009] Further, the supporting platform includes a second annular plate, the limiting cylinder is connected to the side wall of the second annular plate, the limiting protrusion is arranged on the side of the second annular plate away from the limiting cylinder, the limiting groove is arranged on the protective plate, the protective plate is plugged into the limiting protrusion, the cylinder cover is connected to the limiting protrusion, and the cylinder cover and the second annular plate clamp the protective plate.

[0010] Furthermore, the height of the limiting protrusion protruding from the first annular piece is smaller than the length of the limiting groove in the axial direction of the limiting cylinder.

[0011] Further, the side wall of the limiting protrusion is connected to the outer wall of the mounting tube, and the limiting groove is connected to the mounting hole; or, the limiting protrusion is spaced apart from the outer wall of the mounting tube, and the limiting groove runs through both sides of the protective plate.

[0012] Further, the cross-sectional shape of the limiting protrusion in the radial direction of the limiting tube is circular, semicircular or polygonal, and the shape of the limiting groove is consistent with the shape of the limiting protrusion; and / or

[0013] The number of the limiting protrusions and the limiting grooves are both multiple and consistent, and one of the multiple limiting protrusions and the multiple limiting grooves is equidistantly arranged on the protective plate, and the other is equidistantly arranged on the supporting platform.

[0014] Further, the mounting tube is provided with a first slot, the tube cover is provided with a first clamping head, and the first clamping head is clamped with the first slot; or, the outer wall of the mounting tube is provided with a first external thread, the inner wall of the tube cover is provided with a first internal thread, and the mounting tube is threadedly connected to the tube cover.

[0015] Further, a second clamping groove is provided on the side of the limiting protrusion away from the second annular sheet, and a second clamping head is provided on the cylinder cover, and the second clamping head is clamped with the second clamping groove; or, a second external thread is provided on the outer wall of the limiting protrusion, and a second internal thread is provided on the inner wall of the cylinder cover, and the limiting protrusion is threadedly connected to the cylinder cover.

[0016] In order to solve the above technical problems, the technical solution of the present application also provides a handheld dental X-ray machine, which adopts the following technical solution:

[0017] A handheld dental X-ray machine comprises the protective plate fixing structure as described above.

[0018] Compared with the prior art, the technical solution of the present application has the following major beneficial effects: the present application is simple to assemble, and the cylinder cover and the supporting platform clamp the protective plate, so that the installed protective plate is stably and reliably fixed together with the limiting cylinder and the cylinder cover, and the cost of elastic parts is saved; in addition, the protective plate and the supporting platform are connected by a limiting structure to prevent the protective plate from rotating around the outer wall of the limiting cylinder, thereby realizing circumferential limitation of the protective plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is an exploded view of an embodiment of a protective plate fixing structure provided by the present application;

[0021] Figure 2 It is a cross-sectional schematic diagram of an embodiment of a protective plate fixing structure provided by the present application;

[0022] Figure 3 It is a schematic assembly diagram of an embodiment of a restraining tube and a protective plate in a protective plate fixing structure provided by the present application;

[0023] Figure 4 It is a front view of an embodiment of a restraining tube and a supporting platform in a protective plate fixing structure provided by the present application;

[0024] Figure 5 yes Figure 4 A side view of one embodiment;

[0025] Figure 6 yes Figure 4 a side view of another embodiment;

[0026] Figure 7 It is a front view of another embodiment of a restraining tube and a supporting platform in a protective plate fixing structure provided by the present application;

[0027] Figure 8 yes Figure 7 A side view of one embodiment;

[0028] Fig. 9 yes Figure 7 a side view of another embodiment;

[0029] Fig.10 yes Figure 7 Schematic diagram of assembly with protective plate;

[0030] Fig.11 It is a structural schematic diagram of an embodiment of a protective plate in a protective plate fixing structure provided by the present application;

[0031] Fig.12 It is a structural schematic diagram of another embodiment of a protective plate in a protective plate fixing structure provided in the present application.

[0032] Figure numerals: 1. beam limiting cylinder; 11. support block; 2. protective plate; 21. mounting hole; 3. cylinder cover; 4. limiting structure; 41. limiting protrusion; 42. limiting groove; 5. supporting platform; 51. first annular piece; 52. mounting cylinder; 53. second annular piece. DETAILED DESCRIPTION

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] The present application embodiment provides a protective plate fixing structure, such as Figures 1 to 4 and Figure 7 As shown, the protective plate fixing structure includes: a limiting tube 1, a protective plate 2 and a tube cover 3, the end of the limiting tube 1 is provided with a supporting platform 5, the protective plate 2 is connected to the supporting platform 5 through a limiting structure 4, the tube cover 3 is connected to the supporting platform 5 or the limiting structure 4, and the tube cover 3 and the supporting platform 5 clamp the protective plate 2.

[0037] The assembly principle of a protective plate fixing structure provided in an embodiment of the present application is: first, align the mounting hole 21 with the limiting cylinder 1; then, move the protective plate 2 toward the supporting platform 5 until the protective plate 2 is sleeved on the supporting platform 5, and the protective plate 2 and the supporting platform 5 are connected by the limiting structure 4; finally, connect the cylinder cover 3 to the supporting platform 5 or the limiting structure 4, and make the cylinder cover 3 abut against the side of the protective plate 2, and the cylinder cover 3 presses the protective plate 2 onto the supporting platform 5, so that the cylinder cover 3 and the supporting platform 5 clamp the protective plate 2.

[0038] The beneficial effects of a protective plate fixing structure provided in an embodiment of the present application are as follows: compared with elastic part connection methods such as silicone rings, the assembly of the present application is simple, and the cylinder cover 3 and the supporting platform 5 clamp the protective plate 2, so that the installed protective plate 2 is stably and reliably fixed together with the limit cylinder 1 and the cylinder cover 3, and the cost of elastic parts is saved; in addition, the protective plate 2 and the supporting platform 5 are connected by a limiting structure 4 to prevent the protective plate 2 from rotating around the outer wall of the limit cylinder 1, thereby realizing circumferential limitation of the protective plate 2.

[0039] Furthermore, a support block 11 is provided on a side of the supporting platform 5 away from the cylinder cover 3 , and the support block 11 is connected to the outer wall of the beam limiting cylinder 1 .

[0040] In this embodiment, the support block 11 provides support for the supporting platform 5 and strengthens the structure of the supporting platform 5, so that the supporting platform 5 is not easily deformed or bent.

[0041] Furthermore, the limiting structure 4 includes a limiting protrusion 41 and a limiting groove 42, one of the limiting protrusion 41 and the limiting groove 42 is arranged on the protective plate 2, and the other is arranged on the supporting platform 5, and the limiting protrusion 41 and the limiting groove 42 are plugged into each other.

[0042] In this embodiment, during installation, the protective plate 2 is aligned with the limit tube 1, and the limiting protrusion 41 enters the limiting groove 42, thereby limiting the position of the protective plate 2 and the limit tube 1, preventing the protective plate 2 from rotating around the outer wall of the limit tube 1, and playing a role in stopping the rotation of the protective plate 2.

[0043] like Figure 4 As shown, in one embodiment, the protective plate 2 has mounting holes 21 passing through both sides; the supporting platform 5 includes a first annular piece 51 and a mounting tube 52, the two sides of the first annular piece 51 are respectively connected to the mounting tube 52 and the limiting tube 1, the limiting protrusion 41 is provided on the first annular piece 51, the limiting groove 42 is provided on the protective plate 2, the protective plate 2 is sleeved on the mounting tube 52 through the mounting hole 21, the tube cover 3 is connected to the mounting tube 52, and the tube cover 3 and the first annular piece 51 clamp the protective plate 2.

[0044] In this embodiment, first, align the mounting hole 21 with the limiting tube 1; then, move the protective plate 2 toward the mounting tube 52 until the protective plate 2 is sleeved on the mounting tube 52 and the limiting protrusion 41 is engaged with the limiting groove 42; finally, connect the tube cover 3 with the mounting tube 52, and make the tube cover 3 abut against the side of the protective plate 2, so that the tube cover 3 presses the protective plate 2 onto the first annular sheet 51, thereby achieving the protection plate 2 being clamped by the tube cover 3 and the first annular sheet 51.

[0045] Furthermore, the inner diameters of the beam limiting tube 1 , the first annular sheet 51 and the mounting tube 52 are consistent, so as to prevent the light emitted by the handheld dental X-ray machine from hitting the inner wall of the first annular sheet 51 or the mounting tube 52 .

[0046] Furthermore, the diameter of the mounting hole 21 is larger than the outer diameter of the mounting tube 52 , so that the protective plate 2 can be sleeved on the mounting tube 52 .

[0047] Furthermore, the outer diameter of the cylinder cover 3 is larger than the diameter of the mounting hole 21 , so as to prevent the protective plate 2 from falling out of the mounting hole 21 .

[0048] like Figure 2 , 3 As shown, further, when the height of the limiting protrusion 41 protruding from the first annular piece 51 is smaller than the length of the limiting groove 42 in the axial direction of the limiting cylinder 1 .

[0049] In this embodiment, the height of the limiting protrusion 41 protruding from the first annular piece 51 is smaller than the length of the limiting groove 42 in the axial direction of the limiting tube 1, so as to prevent the limiting protrusion 41 from protruding from the protective plate 2 when the limiting protrusion 41 is plugged into the limiting groove 42, thereby preventing the limiting protrusion 41 from affecting the tube cover 3 to press the protective plate 2 onto the first annular piece 51, thereby ensuring the fixed installation of the protective plate 2.

[0050] like Figure 5 , 12 As shown, in one embodiment, the side wall of the limiting protrusion 41 is connected to the outer wall of the mounting tube 52 , and the limiting groove 42 is in communication with the mounting hole 21 .

[0051] In this embodiment, the side wall of the limiting protrusion 41 is connected to the outer wall of the installation tube 52, which can prevent the limiting protrusion 41 from bending due to the collision between the limiting protrusion 41 and the protective plate 2 when the limiting protrusion 41 is inserted into the limiting groove 42.

[0052] like Figure 6 , 11 As shown, in another embodiment, the limiting protrusion 41 is spaced apart from the outer wall of the mounting tube 52 , and the limiting groove 42 runs through both sides of the protective plate 2 .

[0053] In this embodiment, the limiting protrusion 41 is spaced apart from the outer wall of the installation tube 52 , and there is a gap between the limiting protrusion 41 and the outer wall of the installation tube 52 .

[0054] Further, a first card slot (not shown) is provided on the mounting tube 52, and a first clamping head (not shown) is provided on the tube cover 3, and the first clamping head is clamped with the first card slot; or, an outer wall of the mounting tube 52 is provided with a first external thread, and an inner wall of the tube cover 3 is provided with a first internal thread, and the mounting tube 52 is threadedly connected to the tube cover 3.

[0055] In this embodiment, the installation cylinder 52 is threadedly connected or snap-fitted to the cylinder cover 3, both of which improve the assembly speed of the protective plate fixing structure.

[0056] In this embodiment, after the protective plate 2 is sleeved on the installation tube 52, glue is applied on the first external thread, and then the tube cover 3 is screwed onto the installation tube 52, so that the protective plate 2, the limiting tube 1 and the tube cover 3 are stably and reliably fixed together.

[0057] like Figures 7 to 10 As shown, in another embodiment, the supporting platform 5 includes a second annular plate 53, the limiting tube 1 is connected to the side wall of the second annular plate 53, the limiting protrusion 41 is arranged on the side of the second annular plate 53 away from the limiting tube 1, the limiting groove 42 is arranged on the protective plate 2, the protective plate 2 is plugged into the limiting protrusion 41, the tube cover 3 is connected to the limiting protrusion 41, and the tube cover 3 and the second annular plate 53 clamp the protective plate 2.

[0058] In this embodiment, first, align the mounting hole 21 with the limiting tube 1; then, move the protective plate 2 toward the direction of the second annular sheet 53 so that the limiting protrusion 41 is plugged into the limiting groove 42; finally, connect the tube cover 3 with the limiting protrusion 41, and make the tube cover 3 abut against the side of the protective plate 2, so that the tube cover 3 presses the protective plate 2 onto the second annular sheet 53, thereby achieving the tube cover 3 and the second annular sheet 53 clamping the protective plate 2.

[0059] Furthermore, a second clamping groove (not shown) is provided on the side of the limiting protrusion 41 away from the second annular sheet 53, and a second clamping head (not shown) is provided on the cylinder cover, and the second clamping head is clamped with the second clamping groove; or, a second external thread is provided on the outer wall of the limiting protrusion 41, and a second internal thread is provided on the inner wall of the cylinder cover 3, and the limiting protrusion 41 is threadedly connected to the cylinder cover 3.

[0060] In this embodiment, the limiting protrusion 41 is threadedly connected or snap-fitted to the cylinder cover 3, both of which improve the assembly speed of the protective plate fixing structure.

[0061] In this embodiment, after the limiting protrusion 41 and the limiting groove 42 are plugged together, glue is applied on the second external thread, and then the tube cover 3 and the limiting protrusion 41 are tightened, so that the protective plate 2, the limiting tube 1 and the tube cover 3 are stably and reliably fixed together.

[0062] Furthermore, the height of the limiting protrusion 41 protruding from the second annular piece 53 is greater than the length of the limiting groove 42 in the axial direction of the limiting tube 1 , so that the limiting protrusion 41 can be threadedly connected to the tube cover 3 .

[0063] Furthermore, the cross-sectional shape of the limiting protrusion 41 in the radial direction of the limiting tube 1 is circular, semicircular or polygonal, and the shape of the limiting groove 42 is consistent with the shape of the limiting protrusion 41 .

[0064] In this embodiment, the shapes of the limiting protrusion 41 and the limiting groove 42 do not affect the anti-rotation effect of the protective plate 2, and the present application does not impose any limitation thereto.

[0065] Furthermore, the number of the limiting protrusions 41 and the limiting grooves 42 are both multiple and consistent, and one of the multiple limiting protrusions 41 and the multiple limiting grooves 42 is equidistantly arranged on the protective plate 2, and the other is equidistantly arranged on the supporting platform 5.

[0066] In this embodiment, the number of the limiting protrusions 41 and the limiting grooves 42 does not affect the anti-rotation effect of the protective plate 2, and this application does not limit this.

[0067] Furthermore, the beam limiting cylinder 1, the supporting platform 5, the support block 11 and the limiting protrusion 41 are integrally formed.

[0068] An embodiment of the present application also provides a handheld dental X-ray machine, which includes the protective plate fixing structure as described above.

[0069] The beneficial effects of a handheld dental X-ray machine provided by an embodiment of the present application are as follows: the assembly of the present application is simple, and the tube cover 3 and the supporting platform 5 clamp the protective plate 2, so that the installed protective plate 2 is stably and reliably fixed together with the beam limiting tube 1 and the tube cover 3, and the cost of elastic parts is saved; in addition, the protective plate 2 and the supporting platform 5 are connected by a limiting structure 4 to prevent the protective plate 2 from rotating around the outer wall of the beam limiting tube 1, thereby realizing the circumferential limitation of the protective plate 2.

[0070] Furthermore, the inner wall of the beam limiting tube 1 at one end away from the supporting platform 5 is provided with a thread, so as to facilitate screwing and installation with the handheld dental X-ray machine.

[0071] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A protective plate fixing structure, characterized in that: include: A beam limiting cylinder, a protective plate and a cylinder cover, wherein a supporting platform is provided at the end of the beam limiting cylinder, the protective plate is connected to the supporting platform via a limiting structure, the cylinder cover is connected to the supporting platform or the limiting structure, and the cylinder cover and the supporting platform clamp the protective plate.

2. The protective plate fixing structure according to claim 1, characterized in that: A support block is provided on one side of the supporting platform away from the cylinder cover, and the support block is connected to the outer wall of the restraining cylinder.

3. The protective plate fixing structure according to claim 1 or 2, characterized in that: The limiting structure includes a limiting protrusion and a limiting groove, one of the limiting protrusion and the limiting groove is arranged on the protective plate, and the other is arranged on the supporting platform, and the limiting protrusion and the limiting groove are plugged into each other.

4. The protective plate fixing structure according to claim 3, characterized in that: The protective plate has mounting holes passing through both sides; the supporting platform includes a first annular plate and a mounting tube, the two sides of the first annular plate are respectively connected to the mounting tube and the limiting tube, the limiting protrusion is arranged on the first annular plate, the limiting groove is arranged on the protective plate, the protective plate is sleeved on the mounting tube through the mounting hole, the tube cover is connected to the mounting tube, and the tube cover and the first annular plate clamp the protective plate.

5. The protective plate fixing structure according to claim 3, characterized in that: The supporting platform includes a second annular plate, the limiting tube is connected to the side wall of the second annular plate, the limiting protrusion is arranged on the side of the second annular plate away from the limiting tube, the limiting groove is arranged on the protective plate, the protective plate is plugged into the limiting protrusion, the tube cover is connected to the limiting protrusion, and the tube cover and the second annular plate clamp the protective plate.

6. The protective plate fixing structure according to claim 4, characterized in that: The height of the limiting protrusion protruding from the first annular piece is smaller than the length of the limiting groove in the axial direction of the limiting cylinder.

7. The protective plate fixing structure according to claim 4, characterized in that: The side wall of the limiting protrusion is connected to the outer wall of the mounting tube, and the limiting groove is connected to the mounting hole; or, the limiting protrusion is spaced apart from the outer wall of the mounting tube, and the limiting groove runs through both sides of the protective plate.

8. The protective plate fixing structure according to claim 3, characterized in that: The cross-sectional shape of the limiting protrusion in the radial direction of the limiting cylinder is circular, semicircular or polygonal, and the shape of the limiting groove is consistent with the shape of the limiting protrusion; and / or The number of the limiting protrusions and the limiting grooves are both multiple and consistent, and one of the multiple limiting protrusions and the multiple limiting grooves is equidistantly arranged on the protective plate, and the other is equidistantly arranged on the supporting platform.

9. The protective plate fixing structure according to claim 4, characterized in that: The installation tube is provided with a first slot, the tube cover is provided with a first clamping head, and the first clamping head is clamped with the first slot; or, the outer wall of the installation tube is provided with a first external thread, the inner wall of the tube cover is provided with a first internal thread, and the installation tube is threadedly connected to the tube cover.

10. The protective plate fixing structure according to claim 5, characterized in that: A second clamping groove is provided on the side of the limiting protrusion away from the second annular sheet, and a second clamping head is provided on the cylinder cover, and the second clamping head is clamped with the second clamping groove; or, a second external thread is provided on the outer wall of the limiting protrusion, and a second internal thread is provided on the inner wall of the cylinder cover, and the limiting protrusion is threadedly connected to the cylinder cover.

11. A handheld dental X-ray machine, characterized in that: It comprises the protective plate fixing structure as described in any one of claims 1 to 10.

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