Angle screwdriver

Abstract

The utility model provides an angle screwdriver which comprises a main body, the main body comprises a head part, the head part comprises a first contact surface and a second contact surface, the first contact surface and the second contact surface are arranged in the axial direction of the main body, and the first contact surface and the second contact surface are arranged in parallel and intersect with the axial direction of the main body; and after the head part is connected with the screw hole, the first contact surface and the second contact surface are respectively propped against two opposite inner walls of the screw hole. According to the angle screwdriver, the head portion of the angle screwdriver comprises the first contact face and the second contact face, the first contact face and the second contact face are arranged in the axial direction of the main body and intersect with the axial direction of the main body, and therefore the angle screwdriver can be tightened by inclining by a certain angle during operation. Meanwhile, after the head part is connected with the screw hole, the first contact surface and the second contact surface respectively abut against the two opposite inner walls of the screw hole, so that the contact area of the head part and the screw hole is increased, the structural strength of the head part is improved, deformation and slipping are not easy to generate, and the wear resistance of the head part is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dental implant, and particularly relates to an angle screw driver. BACKGROUND

[0002] The oral implant, also known as a dental implant, is implanted into the upper and lower alveolar bone of a human body by a surgical method, and a device for installing a prosthetic tooth on the upper part is installed after the surgical wound is healed.

[0003] In implantation repair, a screw driver is generally used to tighten the screw on the abutment or the crown. The ordinary screw driver is easy to interfere with the denture or the abutment, especially in the anterior region, and the screw driver must be tilted at a certain angle when it is operated.

[0004] Since the ordinary screw driver cannot be inserted into the screw hole after being tilted, in order to facilitate the operation of the doctor, a ball head screw driver that can be tilted for operation appears on the market. The head of the ball head screw driver is a ball head. If interference occurs during operation, the ball head screw driver can be tilted at a certain angle around the ball center for tightening.

[0005] However, the head of the ball head screw driver has a small contact area with the screw hole during operation, which causes the problem of insufficient strength of the head. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the purpose of the present application is to provide an angle screw driver which is beneficial to increase the strength of the head.

[0007] In order to achieve the above purpose, the present application provides an angle screw driver, which comprises:

[0008] a main body, the main body comprising a head, the head comprising a first contact surface and a second contact surface, the first contact surface and the second contact surface being arranged along the axial direction of the main body, the first contact surface and the second contact surface being arranged in parallel and intersecting with the axial direction of the main body;

[0009] In the first connection state of the head and the screw hole, the first contact surface and the second contact surface respectively abut against the two inner walls of the screw hole opposite to each other.

[0010] In a preferred embodiment, the head comprises a plurality of first contact surfaces and a plurality of second contact surfaces, the plurality of first contact surfaces are arranged in a ring shape in the circumferential direction of the main body, the plurality of second contact surfaces are arranged in a ring shape in the circumferential direction of the main body, one first contact surface and one second contact surface form a contact surface group, and the first contact surface and the second contact surface in each contact surface group are arranged in parallel.

[0011] In a preferred embodiment, the head further comprises a third contact surface, the third contact surface being located between the first contact surface and the second contact surface.

[0012] In the second connection state, the head and the screw hole, the third contact surface abuts against the inner wall of the screw hole.

[0013] In a preferred embodiment, the main body further comprises a handle and a connecting rod, the head and the handle being respectively arranged at two ends of the connecting rod.

[0014] In a preferred embodiment, a weakened portion is arranged on the connecting rod near the handle.

[0015] In a preferred embodiment, the weakened portion is formed with a groove.

[0016] In a preferred embodiment, the weakened portion is sleeved with a protective sleeve.

[0017] In a preferred embodiment, the protective sleeve is in interference fit with the weakened portion.

[0018] In a preferred embodiment, the handle is sleeved with an O-ring.

[0019] In a preferred embodiment, the head is provided with a wear-resistant coating.

[0020] As can be seen from the above, the angle screw provided by the present application has a head comprising a first contact surface and a second contact surface, the first contact surface and the second contact surface being arranged along the axial direction of the main body, the first contact surface and the second contact surface being arranged in parallel and crossing the axial direction of the main body, so that the head can be tilted at a certain angle for tightening during operation.

[0021] Meanwhile, after the head is connected with the screw hole, the first contact surface and the second contact surface abut against the two inner walls of the screw hole respectively, which increases the contact area of the head and the screw hole, increases the structural strength of the head, so that the head is not easy to deform and slip, and the wear resistance of the head is increased. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art descriptions. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a structural schematic view of the existing ball head screw;

[0024] Figure 2Fig. 1 is a schematic view of a ball screwdriver in accordance with the present application;

[0025] Figure 3 Fig. 2 is a schematic view of the connection between the ball screwdriver and a screw hole in accordance with the present application;

[0026] Figure 4 Fig. 3 is a schematic view of the structure of an angle screwdriver in accordance with an embodiment of the present application;

[0027] Figure 5 Fig. 4 is a schematic view of the head of an angle screwdriver in accordance with an embodiment of the present application;

[0028] Figure 6 Fig. 5 is a schematic view of the connection between the angle screwdriver and a screw hole in accordance with an embodiment of the present application;

[0029] Figure 7 Fig. 6 is a schematic view of the connection between the angle screwdriver and a screw hole in accordance with another embodiment of the present application;

[0030] Figure 8 Fig. 7 is a schematic view of the connection between the angle screwdriver and a screw hole in accordance with another embodiment of the present application; Figure 7 Fig. 8 is a sectional view along A-A in Fig. 7.

[0031] Reference numerals

[0032] 1. ball screwdriver; 11. ball head; 12. first contact area;

[0033] 2. angle screwdriver; 20. main body; 21. head; 211. first contact surface; 212. second contact surface; 213. third contact surface; 22. handle; 23. connecting rod; 231. weakened portion; 232. groove; 24. protective sleeve; 25. O-ring; 26. second contact area; 27. third contact area;

[0034] 3. screw hole; 31. inner wall;

[0035] 4. anterior dental region. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the embodiments and the accompanying drawings.

[0037] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meaning understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise defined. The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] Referring to Figures 1-3 Fig. 1 shows a prior art ball screwdriver 1, which includes a ball head 11. After the ball head 11 is inserted into a screw hole 3, the ball screwdriver 1 can be tilted at a certain angle around the ball center of the ball head 11 for tightening. Please continue to refer to Figure 2 At this time, the axis of the ball screwdriver 1 and the axis of the screw hole 3 form a certain angle, thereby avoiding interference with the anterior tooth area 4 during operation.

[0039] However, the inventors have found that, please continue to refer to Figure 3 Fig. 2 shows that the ball head 11 contacts the inner wall 31 of the screw hole 3 and forms a first contact area 12 during operation. The first contact area 12 is a circular arc shape and has a small area, which causes stress concentration of the ball head 11 during operation, thereby resulting in insufficient structural strength.

[0040] Referring to Figures 4-6 Fig. 3 shows that an embodiment of the present application provides an angle screwdriver 2, which includes a main body 20. The main body 20 includes a head 21, which includes a first contact surface 211 and a second contact surface 212. The first contact surface 211 and the second contact surface 212 are arranged along the axial direction of the main body 20. The first contact surface 211 and the second contact surface 212 are arranged in parallel and cross the axial direction of the main body 20.

[0041] Please continue to refer to Figure 6 Fig. 4 shows that the head 21 and the screw hole 3 are in a first connection state. The first contact surface 211 and the second contact surface 212 respectively abut against two inner walls 31 of the screw hole 3 opposite to each other. At this time, the axial direction of the main body 20 and the axial direction of the screw hole 3 form a certain angle.

[0042] The angle screwdriver 2 provided by the application has a head 21, which comprises a first contact surface 211 and a second contact surface 212, the first contact surface 211 and the second contact surface 212 are arranged along the axial direction of the body 20, the first contact surface 211 is arranged in parallel with the second contact surface 212 and crosses the axial direction of the body 20, so that the head 21 can be tilted at a certain angle during operation.

[0043] Meanwhile, after the head 21 is connected with the screw hole 3, the first contact surface 211 and the second contact surface 212 abut against the two inner walls 31 of the screw hole 3, respectively, so that the contact area of the head 21 and the screw hole 3 is increased, the structural strength of the head 21 is increased, and thus the head 21 is not prone to deformation and slipping and the wear resistance of the head 21 is increased.

[0044] Specifically, after the head 21 is connected with the screw hole 3, a second contact area 26 and a third contact area 27 are formed, the area of the second contact area 26 is the area of the first contact surface 211, and the area of the third contact area 27 is the area of the second contact surface 212.

[0045] In one of the embodiments, the head 21 comprises a plurality of first contact surfaces 211 and a plurality of second contact surfaces 212, the plurality of first contact surfaces 211 are arranged in a ring shape in the circumferential direction of the body 20, the plurality of second contact surfaces 212 are arranged in a ring shape in the circumferential direction of the body 20, one first contact surface 211 and one second contact surface 212 form a contact surface group, and the first contact surface 211 and the second contact surface 212 in each contact surface group are arranged in parallel. In the first state, after the angle screwdriver 2 is inserted into the screw hole 3 and is screwed to a certain angle, the angle screwdriver 2 is separated from the screw hole 3 to avoid interference with the denture or the abutment, and then the angle of the angle screwdriver 2 is adjusted, the angle screwdriver 2 is inserted into the screw hole 3 again, and the angle screwdriver 2 is screwed and reciprocated multiple times to achieve tightening.

[0046] Please continue to refer to Figure 5 In one of the embodiments, the head 21 further comprises a third contact surface 213, the third contact surface 213 is located between the first contact surface 211 and the second contact surface 212, and the third contact surface 213 abuts against the inner wall 31 of the screw hole 3 in the second connection state of the head 21 and the screw hole 3. The third contact surface 213 can increase the structural strength of the head 21, and the first contact surface 211 can be inserted into a deeper position in the screw hole 3, so that the head 21 and the screw hole 3 are more closely matched and the stability during operation is better.

[0047] In one of the embodiments, Figure 7 The figure shows that the angle screwdriver 2 is connected with the screw hole 3 vertically, that is, the axial direction of the angle screwdriver 2 is parallel to the axial direction of the screw hole 3 in the second connection state, and the third contact surface 213 abuts against the inner wall 31 of the screw hole 3, so that the angle screwdriver 2 can be screwed.

[0048] Please refer to Figure 7 and 8 As shown in the figure, in one embodiment, the first contact surface 211 has six, the second contact surface 212 has six, and the third contact surface 213 has six. The six third contact surfaces 213 form a hexagonal polygon structure in the cross section perpendicular to the axial direction of the main body 20, and the head 21 of the angle screw 2 is formed as a hexagonal polygon structure, so that the angle screw 2 can be compatible with the existing abutment screw when it is vertical and inclined.

[0049] In one embodiment, the head 21 is provided with a wear-resistant coating, which can effectively increase the wear resistance of the head 21 and reduce the deformation or slipping of the head 21. Preferably, the wear-resistant coating is a DLC coating (Diamond Like Carbon, Diamond Like Carbon coating) or the like.

[0050] Please continue to refer to Figure 4 As shown in the figure, in one embodiment, the main body 20 further includes a handle 22 and a connecting rod 23, and the head 21 and the handle 22 are respectively arranged at two ends of the connecting rod 23. Among them, the handle 22 is convenient for the operator to hold, and the connecting rod 23 is used to connect the handle 22 and the head 21, and transmit the force applied by the operator to the head 21.

[0051] Please continue to refer to Figure 4 As shown in the figure, in one embodiment, the connecting rod 23 is provided with a weakening portion 231 near the handle 22. Among them, the weakening portion 231 is a weak area on the connecting rod 23, which is preferentially broken when the angle screw 2 is broken, and is convenient to take out after being broken, so as to avoid the head 21 from being broken and falling into the patient's oral cavity, causing a medical accident.

[0052] In one embodiment, the weakening portion 231 is formed with a groove 232, which can effectively weaken the connecting rod 23. The strength of the groove 232 area is obviously smaller than that of other areas on the connecting rod 23, so the groove 232 area will be preferentially broken. Further, the groove 232 is a U-shaped groove, a rectangular groove, etc.

[0053] Please continue to refer to Figure 7 As shown in the figure, in one embodiment, the weakening portion 231 is sleeved with a protective sleeve 24. Among them, after the weakening portion 231 is broken, it can avoid the connecting rod 23 and the handle 22 from being separated due to the protection of the protective sleeve 24, so as to avoid falling into the patient's oral cavity.

[0054] In one embodiment, the protective sleeve 24 is in interference fit with the weakening portion 231, so as to effectively avoid the connecting rod 23 from being separated from the handle 22 after being broken. Preferably, the protective sleeve 24 is made of silica gel or the like.

[0055] Please continue to refer toFigure 7 As shown, in one embodiment, the handle 22 is sleeved with an O-ring 25, which can achieve the anti-dropping function and facilitate the operator to hold.

[0056] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the acts or steps recited in the claims can be performed in a different order and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown or sequential order to achieve desirable results.

[0057] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to suggest that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the embodiments of the present application as described above, which are not provided in details for the sake of brevity.

[0058] The embodiments of the present application are intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-described embodiments of the present application can be further modified than described above and still fall within the scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. An angle screwdriver, characterized in that, The utility model relates to a screwdriver, including: a body, the body includes a head, the head includes a first contact surface and a second contact surface, the first contact surface and the second contact surface are arranged in the axial direction of the body, the first contact surface is parallel with the second contact surface and crosses the axial direction of the body; the head and screw hole are in the first connection state, and the first contact surface and the second contact surface are respectively in contact with the two inner walls of the screw hole.

2. The angle screwdriver according to claim 1, wherein The head includes a plurality of first contact surfaces and a plurality of second contact surfaces, the plurality of first contact surfaces are annularly arranged in the circumferential direction of the body, the plurality of second contact surfaces are annularly arranged in the circumferential direction of the body, one first contact surface and one second contact surface form a contact surface group, and the first contact surface and the second contact surface in each contact surface group are arranged in parallel.

3. The angle screwdriver according to claim 2, wherein The head further includes a third contact surface between the first contact surface and the second contact surface. The head and the screw hole are in the second connection state, and the third contact surface is in contact with the inner wall of the screw hole.

4. The angle screwdriver of claim 1, wherein, The body further includes a handle and a connecting rod, and the head and the handle are respectively arranged at two ends of the connecting rod.

5. The angle screwdriver of claim 4, wherein, A weakened portion is arranged on the connecting rod close to the handle.

6. The angle screwdriver of claim 5, wherein, The weakened portion is formed with a groove.

7. The angle screwdriver of claim 5, wherein, The weakened portion is sleeved with a protective sleeve.

8. The angle screwdriver of claim 7, wherein, The protective sleeve is in interference fit with the weakened portion.

9. The angle screwdriver of claim 4, wherein, The handle is sleeved with an O-ring.

10. The angle screwdriver according to any one of claims 1-9, characterized in that, The head is provided with a wear-resistant coating.

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