Head mold positioning frame and head mold positioning system

Abstract

The utility model belongs to the technical field of dental training models, and particularly relates to a head mold positioning frame and a head mold positioning system. The oral cavity model comprises an upper support and a lower support, the front end of the upper support fixes the upper portion of the oral cavity model, and the front end of the lower support fixes the lower portion of the oral cavity model. The bottom end of the middle connecting rod is horizontally hinged to the lower bracket; the tail end of the upper support extends downwards to form a rear connecting rod, a bottom connecting rod avoiding the middle connecting rod in position is further horizontally hinged to the lower support, a bottom through hole in the bottom connecting rod and a rear through hole in the rear connecting rod are fixed through a locking part horizontally penetrating through the bottom through hole and the rear through hole, and the bottom through hole and / or the rear through hole are / is kidney-shaped holes parallel to the length direction of the connecting rod. The head die fixing device is compact in structure and convenient to use, the head die fixing function is achieved, and meanwhile the effect of flexibly adjusting the opening angle on line can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dental training models, and particularly relates to a head mold positioning frame and a head mold positioning system. Background Art

[0002] At present, in oral medicine teaching, most educators will use a simulation human head model with an oral model (hereinafter referred to as a head mold) to guide students to conduct practical demonstrations. In this way, it can not only help students more intuitively understand the oral structure of humans, but also enable them to conduct practical operations for a long time. Considering the characteristics of oral clinical operations, such as relatively fixed working postures, repetitive movements, and limited oral operation environments, dentists have become a high-risk group for skeletal muscle-related diseases. At this time, combined with incorrect and unhealthy sitting postures during long-term clinical operations, it will further increase the risk of skeletal muscle-related diseases for dentists and even students. Therefore, a positioning system applicable to a head mold is disclosed in both "CN108389490B" and "CN206516218U" in the Chinese Patent Publication Number. Through multi-directional and large-range adjustment capabilities, it allows the head mold to be adjusted and fixed in a standard position for skill training, which can not only improve the convenience of dental training but also achieve the purpose of reducing the occurrence of skeletal muscle-related diseases.

[0003] However, the above-mentioned existing traditional positioning systems still have the following defects: Firstly, the oral models in the head mold are used as the fixed basis, and their model sizes are different. Usually, different models of brackets need to be adapted to achieve a reliable fixing effect. The purchase of a large number of brackets with repetitive functions significantly increases the purchase cost. Secondly, the fixing method disclosed in texts such as "CN206516218U" has an actual operation height that is often lower than or parallel to the desktop, which is obviously not in line with the actual operation height, and the surgical field is easily affected by the front bracket rod, thus bringing troubles to practical operations. Thirdly, during actual operation, the patient's mouth opening sizes vary. This requires the oral model to preferably be able to adjust the opening angle adaptively to ensure authenticity. However, traditional positioning systems can only perform the function of fixing the head mold and cannot achieve the effect of controlling the opening and closing size of the oral model. Currently, there are only several customized opening angles for the oral model, resulting in inflexible operation and poor flexibility. Finally, due to differences in usage habits among different people, especially between domestic and foreign people, some people prefer right-handed operation, while some are more suitable for left-handed operation. Currently, the positioning systems are all uniformly designed for right-handed operation, causing usage troubles for left-handed people. Therefore, it is urgent to solve. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the deficiencies of the above-mentioned prior art and provide a head mold positioning frame with a compact structure and convenient use, which can not only realize the fixing function of the head mold, but also achieve the effect of flexible on-line adjustment of the opening angle.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] A head mold positioning frame, characterized in that: it includes an upper bracket and a lower bracket. The upper part of the oral cavity model is fixed at the front end of the upper bracket, and the lower part of the oral cavity model is fixed at the front end of the lower bracket. The top end of the middle connecting rod is horizontally hinged to the middle part of the upper bracket, and the bottom end of the middle connecting rod is horizontally hinged to the lower bracket. A rear connecting rod extends downward from the tail end of the upper bracket, and a bottom connecting rod that avoids the position of the middle connecting rod is also horizontally hinged on the lower bracket. The bottom through hole on the bottom connecting rod and the rear through hole on the rear connecting rod are fixed by a locking part that horizontally penetrates both of them, and the bottom through hole and / or the rear through hole are waist-shaped holes parallel to the length direction of the corresponding connecting rod.

[0007] Preferably, the locking part includes a locking screw and a matching locking nut. The locking screw penetrates through the bottom through hole and the rear through hole and is fixed at the locking nut, so as to fasten the bottom connecting rod and the rear connecting rod. The middle connecting rod is a telescopic rod. At this time, the waist-shaped rear through hole also constitutes a height adjustment hole, so that the upper bracket and the lower bracket can produce a spacing adjustment action of approaching and separating along the vertical direction.

[0008] Preferably, the middle connecting rod includes a bottom frame directly fixed on the upper plate surface of the lower bracket. Installation holes are arranged at the top end of the bottom frame, and it also includes a connecting rod horizontally hinged to the upper bracket. A connecting hole is horizontally penetrated through the plate surface on the connecting rod, and the connecting hole is a waist-shaped hole parallel to the length direction of the connecting rod. The fastening screw sequentially passes through the installation hole and the connecting hole and is fixed by a fastening nut.

[0009] Preferably, the top of the groove end of the bottom frame bends into the connecting hole and forms a bending section, and a sliding rail matching relationship with a guiding direction parallel to the length direction of the connecting rod is formed between the bending section and the two side hole walls of the connecting hole.

[0010] Preferably, the outer shape of the bottom frame is in the shape of a U-shaped groove plate with an upward opening, and the bottom of the groove is fixed on the upper plate surface of the lower bracket. The installation holes are two groups and are respectively arranged at the two groove ends of the bottom frame. A cantilever frame is arranged on the upper bracket. The outer shape of the cantilever frame is in the shape of a U-shaped groove plate with a downward opening, and the bottom of the groove is fixed on the lower plate surface of the upper bracket. The two groove ends of the cantilever frame and the two groove ends of the bottom frame are respectively connected by a middle connecting rod.

[0011] Preferably, an extension plate vertically extends downward from the tail end of the upper bracket, and a support plate horizontally protrudes from the bottom end of the extension plate. The top end of the rear connecting rod forms a fixed fit with one side of the support plate.

[0012] Preferably, bolt holes are provided on both sides of the support plate, and a threaded fixing fit is formed between the top end of the rear connecting rod and one of the bolt holes; lifting lugs with assembly holes are provided on both sides of the lower bracket, and a horizontal hinge fit is formed between the bottom connecting rod and one of the assembly holes.

[0013] Preferably, a head mold positioning system, applying the head mold positioning frame as described above, is characterized in that: it includes a fixing part fixed on the tabletop, a spherical hinge support is arranged on the fixing part, a positionable rotating ball is arranged in the spherical hinge support, a positioning rod is fixed on the rotating ball, and the positioning rod penetrates through the support plate and the upper bracket upward respectively; the lateral set screw penetrates through the extension plate from outside to inside and abuts against the side of the positioning rod.

[0014] Preferably, the fixing part is a clamping groove with the notch facing the edge of the table, and the clamping groove is fixed on the tabletop through a bottom set screw; the rotating ball positions its rotation angle in the spherical hinge support through a side positioning handle.

[0015] Preferably, both the upper bracket and the lower bracket are in the shape of a plate body, and waist-shaped adjustment holes are arranged along the length direction of the front ends of the two brackets, so that the front screw penetrates through the waist-shaped adjustment hole and is threadedly fitted on the corresponding bracket to achieve the purpose of adjusting the protruding amount of the oral cavity model.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1) Through the above solution, the present utility model forms an adjustable connecting rod structure through the upper bracket, the middle connecting rod, the bottom connecting rod and the rear connecting rod, so as to achieve the online adjustment effect of the inclination angle of the lower bracket. When the oral cavity model is fixed between the upper bracket and the lower bracket, the lower bracket realizes an angle change relative to the upper bracket, and the fixed oral cavity model can also realize the change adjustment effect of the opening angle accordingly. Thus, the structure of the present utility model is compact and easy to use. While realizing the fixing function of the head mold, it can also achieve the online flexible adjustment effect of the opening angle.

[0018] 2) Considering the dimensional model differences of the oral cavity models, the present utility model also utilizes the locking part to cooperate with the telescopic middle connecting rod to achieve the displacement adjustment effect of the upper bracket and the lower bracket in the vertical height, so as to expand its application range.

[0019] 3) During actual operation, on the one hand, the middle connecting rod can rely on the horizontal hinge point to achieve the hinge action effect relative to the cantilever frame at the upper bracket, so as to ensure the adjustment purpose at the angle level; on the other hand, the middle connecting rod itself is split into a bottom frame and a connecting rod. Relying on the sliding adjustment of the bending section relative to the connecting hole of the connecting rod and the tightening and fixing of the fastening screw and the fastening nut, the telescopic adjustment purpose of the middle connecting rod can be achieved, and it is flexible and convenient to use.

[0020] 4) During actual operation, the present utility model also provides a head mold positioning system. Specifically, based on the head mold positioning frame, through the cooperation of the positioning rod and the upper bracket, the height and angle adjustment of the head mold positioning frame can be achieved, as well as the fixing effect of the head mold positioning frame relative to the operating table or desktop and other table surfaces. At this time, two coaxially arranged holes at the upper bracket can effectively support the head mold positioning frame; at the same time, the lateral set screws are used to fix the head mold positioning frame to achieve the optimized operation effect.

[0021] 5) It should be noted that the present utility model also takes into account the operational differences between the left-handed and right-handed positions. Therefore, double bolt holes are arranged at the provided support plate, and similarly, double-sided lifting lugs are configured at the lower bracket. As needed, the bottom connecting rod and the rear connecting rod can be adaptively installed on the corresponding side of the lower bracket; installing on the left side of the lower bracket is suitable for operators who prefer left-handed adjustment, and vice versa, it is suitable for operators who are used to right-handed adjustment. The adjustment flexibility is stronger, the applicability is wider, and the convenience can also be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is a three-dimensional structural schematic diagram of the head mold positioning frame;

[0024] Figure 3 is Figure 2 action state diagram of;

[0025] Figure 4 is a sectional view of the cooperation state of the cantilever frame and the middle connecting rod.

[0026] The actual corresponding relationship between each reference numeral and the component name of the present utility model is as follows:

[0027] a - oral cavity model; b - head mold;

[0028] 10 - upper bracket; 20 - lower bracket; 21 - lifting lug;

[0029] 30 - middle connecting rod; 31 - bottom frame; 31a - bending section; 32 - connecting rod; 32a - connecting hole; 33 - fastening screw

[0030] 40 - rear connecting rod; 41 - rear through hole; 50 - bottom connecting rod; 51 - bottom through hole; 60 - locking part;

[0031] 70 - cantilever frame; 81 - extension plate; 82 - support plate; 82a - bolt hole;

[0032] 91 - spherical hinge support; 92 - rotating ball; 93 - positioning rod; 94 - lateral set screw; 95 - clamping groove; 96 - bottom set screw; 97 - side positioning handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] For the convenience of understanding, in combination with Figures 1-4 , the specific structure and working mode of the present utility model are further described as follows:

[0034] The implementation structure of the present utility model is composed of a head mold positioning frame and a support frame for fixing the head mold positioning frame; the head mold positioning frame is used to fix the head mold b with the oral cavity model a as shown in Figure 1 . During operation, the positioning rod 93 of the support frame is inserted into the upper support 10 of the head mold positioning frame. At this time, the special design of the lower support 20 can avoid the position of the positioning rod 93; subsequently, relying on the lateral set screw 94, the purpose of fixing the head mold positioning frame can be achieved. The support frame realizes the clamping and fixing effect relative to the tabletop and the purpose of large-angle swinging of the head mold positioning frame by relying on the ball hinge structure, the clamping groove 95 and even the bottom set screw 96. Among them:

[0035] I. Head positioning frame

[0036] The outer shape of the head positioning frame refers to Figures 2-4 shown, including an upper support 10, a lower support 20, a middle connecting rod 30, a bottom connecting rod 50 and a rear connecting rod 40. During assembly, the front end of the upper support 10 and the front end of the lower support 20 fix the oral cavity model a through the kidney-shaped adjustment holes, forming the assembly state shown in Figure 1 . The middle part of the lower plate surface of the upper support 10 fixes the cantilever frame 70 with the opening facing downwards, and horizontally hinges the middle connecting rod 30 relying on the cantilever frame 70, and the middle connecting rod 30 is fixed at the tail end of the lower support 20. On both sides of the middle part of the lower support 20, there are hanging ears 21 with assembly holes extending downwards, and the hanging ears 21 form a horizontal hinge fit with the bottom connecting rod 50; a hinge fit is formed between the bottom connecting rod 50 and the rear connecting rod 40 horizontally hinged to the tail end of the upper support 10. During actual use, corresponding dimension scales can also be designed on the bottom connecting rod 50 to facilitate more accurate adjustment during use. Specifically in the design, a bottom through hole 51 in the shape of a kidney-shaped hole is arranged at the bottom connecting rod 50, and a rear through hole 41 in the shape of a kidney-shaped hole is arranged at the rear connecting rod 40. Relying on the locking screw and the locking nut, the locking effect on the two connecting rods can be achieved as shown in Figures 2-3 .

[0037] Of course, when necessary, appropriately loosen the locking nut, and relying on the locking screw, it can reciprocate relative to the bottom through hole 51 and the rear through hole 41, and the purpose of adjusting the opening angle of the upper support 10 and the lower support 20 can be achieved, specifically referring to Figure 3 shown.

[0038] Furthermore, the middle connecting rod 30 can be split into a connecting rod 32 directly horizontally hinged to the bottom end of the cantilever frame 70, and a bottom frame 31 that is fixed to each other with the connecting hole 32a at the connecting rod 32 by fastening screws 33 and fastening nuts. Considering that the middle connecting rod 30 only needs to have the function of telescoping and does not need to have the function of bending, therefore, a bending section 31a is bent from the groove end of the bottom frame 31 towards the connecting hole 32a, and the bending section 31a forms a slider and is slidably fitted in the connecting hole 32a, as shown in reference to Figures 3-4 shown. In addition, for the cooperation between the connecting rod 32 and the cantilever frame 70, holes can be drilled separately outside the connecting hole 32a, and then hinged through a pin shaft, as shown in reference to Figure 4 shown; or the pin shaft can be directly passed through the connecting hole 32a. At this time, it is necessary to ensure the position constancy of the pin shaft to avoid the problem of out-of-control telescoping of the middle connecting rod 30 caused by accidental displacement along the connecting hole 32a.

[0039] II. Support Frame

[0040] For the upper support frame 10 and the lower support frame 20, on the one hand, relying on the kidney-shaped adjustment holes, the adjustment purpose of the extension amount of the oral model a can be achieved; on the other hand, the bottom through hole 51 and the rear through hole 41 are matched with the locking part 60, and the adjustment effect of the opening angle of the oral model a can be achieved. At the same time, the extension plate 81 and the support plate 82 arranged at the tail end of the upper support frame 10 provide the base for fixing the support frame, and also utilize the two sets of bolt holes 82a of the support plate 82 to ensure the purpose of adaptive adjustment for the left hand position and the right hand position.

[0041] The outer shape of the support frame is shown in reference to Figure 1 shown, including a card slot 95 with a bottom set screw 96, which is convenient for timely clamping and fixing on the corresponding tabletop; a ball hinge structure is installed at the outer bottom of the card slot 95, including a ball hinge support 91 and a rotating ball 92, and the positioning of the rotating ball 92 is achieved by relying on the side positioning handle 97. A positioning rod 93 is fixed on the rotating ball 92, and the positioning rod 93 sequentially penetrates upward through the support plate 82 and the upper support frame 10, so that the positioning rod 93 forms a double-point stable structure similar to a simply supported beam, and then the fastening is achieved by relying on the side set screw that is threadedly fitted on the extension plate 81. During operation, the large-amplitude swinging function of the entire head mold positioning frame can be achieved by relying on the rotating ball 92, or the rotating effect of the head mold positioning frame relative to the positioning rod 93 can be achieved by relying on the lateral set screw 94, so as to achieve the purpose of adjusting the opening orientation of the oral model a.

[0042] In addition, due to the design of the earring 21 at the lower support frame 20 and the hinged manner between the middle connecting rod 30 and the tail end of the lower support frame 20, the positioning rod 93 will surely be able to be like Figure 1The shown avoidance of the lower bracket 20 is to achieve the purpose of flexible adjustment, which is an optimal solution. Of course, in actual design, it is also feasible that the middle connecting rod 30 is directly fixed to the middle part of the lower bracket 20, and the bottom connecting rod 50 is hinged to the tail end of the lower bracket 20. However, the structural compactness is slightly worse, and the adjustment convenience is slightly worse. At the same time, due to the need for a relatively large elongation at the tail end of the lower bracket 20 in this slightly worse design, attention should also be paid to the position interference problem between the lower bracket 20 and the positioning rod 93. At this time, an avoidance groove for avoiding the action path of the positioning rod 93 can be considered to be opened at the tail end of the lower bracket 20, etc., which can be specifically used according to the actual situation and will not be elaborated here.

[0043] Certainly, for those skilled in the art, the present utility model is not limited to the details of the above-described exemplary embodiments, but also includes the same or similar ways that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present utility model is defined by the appended claims rather than the above description.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] The technical parts not described in detail in the present utility model are all well-known technologies.

Claims

1. A head mold positioning frame, characterized in that: The invention comprises an upper bracket (10) and a lower bracket (20), wherein the front end of the upper bracket (10) fixes the upper part of the oral cavity model (a), and the front end of the lower bracket (20) fixes the lower part of the oral cavity model (a); the middle part of the upper bracket (10) is horizontally hinged to the top end of the middle connecting rod (30), and the bottom end of the middle connecting rod (30) is horizontally hinged to the lower bracket (20); a rear connecting rod (40) extends downward from the tail end of the upper bracket (10), and a bottom connecting rod (50) is horizontally hinged on the lower bracket (20) to avoid the position of the middle connecting rod (30); a bottom through hole (51) on the bottom connecting rod (50) and a rear through hole (41) on the rear connecting rod (40) are fixed by a locking portion (60) that horizontally penetrates the two, and the bottom through hole (51) and / or the rear through hole (41) are waist-shaped holes parallel to the length direction of the connecting rod.

2. A head mold positioning frame according to claim 1, characterized in that: The locking portion (60) includes a locking screw and a matching locking nut, the locking screw passes through the bottom through hole (51) and the rear through hole (41) and is fixed to the locking nut, thereby fastening the bottom connecting rod (50) and the rear connecting rod (40); the middle connecting rod (30) is a telescopic rod, and the waist-shaped rear through hole (41) also constitutes a height adjustment hole, so that the upper bracket (10) and the lower bracket (20) can produce a spacing adjustment action of approaching and separating in the vertical direction.

3. A head mold positioning frame according to claim 2, characterized in that: The middle connecting rod (30) comprises a bottom frame (31) directly fixed on the upper plate surface of the lower bracket (20), a mounting hole is arranged at the top end of the bottom frame (31), and also comprises a connecting rod (32) horizontally hinged at the upper bracket (10); a connecting hole (32a) is arranged on the connecting rod (32) horizontally penetrating the plate surface, and the connecting hole (32a) is a waist-shaped hole parallel to the length direction of the connecting rod (32), and a fastening screw (33) passes through the mounting hole and the connecting hole (32a) in sequence and is fixed by a fastening nut.

4. A head mold positioning frame according to claim 3, characterized in that: The top of the groove end of the bottom frame (31) is bent into the connecting hole (32a) to form a bent section (31a), and a slide rail matching relationship is formed between the bent section (31a) and the hole walls on both sides of the connecting hole (32a), with the guide direction parallel to the length direction of the connecting rod (32).

5. A head mold positioning frame according to claim 3 or 4, characterized in that: The bottom frame (31) is shaped like a U-shaped groove plate with an opening facing upwards, and the bottom of the groove is fixed to the upper plate surface of the lower bracket (20); the mounting holes are in two groups and are respectively arranged at the two groove ends of the bottom frame (31); a cantilever frame (70) is arranged at the upper bracket (10); the cantilever frame (70) is shaped like a U-shaped groove plate with an opening facing downwards, and the bottom of the groove is fixed to the lower plate surface of the upper bracket (10); the two groove ends of the cantilever frame (70) are connected to the two groove ends of the bottom frame (31) via a middle connecting rod (30) respectively.

6. A head mold positioning frame according to claim 1, 2, 3 or 4, characterized in that: An extension plate (81) extends vertically downward from the tail end of the upper bracket (10), and a support plate (82) is horizontally protruded from the bottom end of the extension plate (81); the top end of the rear connecting rod (40) is fixedly matched with one side of the support plate (82).

7. A head mold positioning frame according to claim 6, characterized in that: Bolt holes (82a) are arranged on both sides of the support plate (82), and a threaded fixing fit is formed between the top end of the rear connecting rod (40) and one of the bolt holes (82a); and lifting ears (21) with assembly holes are arranged on both sides of the lower bracket (20), and a horizontal hinged fit is formed between the bottom connecting rod (50) and one of the assembly holes.

8. A head mold positioning system, using a head mold positioning frame as claimed in claim 6 or 7, characterized in that: The invention comprises a fixing part fixed on the table top, a ball joint support (91) is arranged on the fixing part, a positionable rotating ball (92) is arranged in the ball joint support (91), a positioning rod (93) is fixed on the rotating ball (92), and the positioning rod (93) passes through the support plate (82) and the upper bracket (10) upwards respectively; a lateral set screw (94) passes through the extension plate (81) from the outside to the inside and then presses against the rod side of the positioning rod (93).

9. The head mold positioning system according to claim 8, characterized in that: The fixing part is a slot (95) with the notch facing the edge of the table, and the slot (95) is fixed to the table surface by a bottom set screw (96); the rotating ball (92) is positioned at its rotation angle in the ball joint support (91) by a side positioning handle (97).

10. The head mold positioning system according to claim 8, characterized in that: The upper bracket (10) and the lower bracket (20) are both plate-shaped, and waist-shaped adjustment holes are arranged at the front ends of the two brackets along their length directions, so that the front screws penetrate the waist-shaped adjustment holes and then are threadedly engaged with the corresponding brackets, thereby achieving the purpose of adjusting the extension amount of the oral model (a).

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