Threaded quick connection mechanism

Abstract

The invention relates to a threaded quick-connection mechanism (1) comprising a bolt (3) with an external thread (2) and a nut portion (4) with an internal thread (5). The nut part is provided with a threaded part (6), an internal thread (5) is formed in the threaded part (6), a through hole (8) penetrating through the threaded part (6) and a longitudinal axis (7) of the internal thread (5) form a certain angle (alpha), and the diameter of the through hole (8) is larger than the outer diameter of the internal thread (5) and smaller than the outer diameter of the threaded part (6).

Description

Technical Field

[0001] The present invention relates to a threaded quick-connection mechanism, including a bolt with an external thread and a nut portion with an internal thread. An internal thread is formed in the threaded member of the nut portion, and a through hole passing through the threaded member forms a certain angle with the longitudinal axis of the internal thread. The diameter of the through hole is larger than the outer diameter of the internal thread and smaller than the outer diameter of the threaded member. Background Art

[0002] Establishing a threaded connection or a screw connection between two threaded components can be widely applied to the relative adjustment and fixation of two objects. The lead S passed through when adjusting the two components can be obtained from the pitch P and the number of revolutions U of the thread, that is, S = P x U.

[0003] A long lead or a small slope requires more revolutions, which will increase the required time and workload. This is particularly disadvantageous for time-sensitive applications, such as the medical field, especially during surgery, because excessive time consumption will increase the burden on patients.

[0004] The solutions in the prior art can accelerate long-range bridging. Patent document DE19825132A1 discloses a threaded connection mechanism with a screw and a nut. The screw has a bolt thread. The screw is designed as a square screw with a flat surface, so that the bolt thread is only formed on the threaded section. The square perforation of the nut is attached to the nut thread at an acute angle, and the square perforation interrupts the nut thread in its four-corner area to achieve or prevent the displacement of the nut relative to the screw, depending on the rotation position. Patent document DE 102017129644A1 discloses a threaded quick-connection mechanism, in which there is a screw with an external thread and a nut. At least two opposite long sides of the external thread and the internal thread are both flat. The nut is further divided into a first nut member and a second nut member, and the first nut member and the second nut member can rotate relative to each other and be clamped through the external / internal thread pairing. Summary of the Invention

[0005] The object of the present invention is to provide an easy-to-operate threaded quick-connection mechanism, which can be used to accelerate the translational adjustment to bridge the expected lead and improve the reliability of the threaded connection when the threads are engaged with each other.

[0006] The solution of the present invention to achieve the above object is a threaded quick-connection mechanism having the features described in claim 1. For the advantageous embodiments and beneficial improvement solutions of the present invention, please refer to the dependent claims.

[0007] The threaded quick-connect mechanism according to the present invention provides a threaded connection function, and can also achieve the release of the threaded connection by tilting the threaded member, quickly complete a long lead through a pure translational movement, and then re-incline the threaded member in the reverse direction to establish the threaded connection and ensure it is fixed in place. Furthermore, the axial position of the threaded member on the bolt can be finely adjusted by rotating the threaded member relative to the bolt. By selecting the direction of insertion of the through-hole according to the angle and selectively choosing the diameter, it can be ensured that one side of the threaded member (i.e., the side where the through-hole is inclined) is fully threaded and the threaded member retains sufficient material thickness, while the other side retains sufficient thread depth.

[0008] The above-mentioned angle is taken from the range of 2° to 45°, preferably from the range of 5° to 35°, and more preferably from the range of 10° to 25°.

[0009] Particularly preferably, the nut part has a pressure member that can be adjusted radially relative to the longitudinal axis between the engagement position where the internal thread and the external thread are engaged and the adjustment position where the internal thread and the external thread are loosened. Such a pressure member improves the process safety and reliability of the threaded quick-connect mechanism because a force orthogonal to the adjustment direction must be applied to achieve quick adjustment.

[0010] The pressure member can be acted on by a return spring that pushes the pressure member to the engagement position, that is, the basic state is the established threaded engagement, and an active force must be applied to end the threaded connection. When the force is removed, the threaded connection is re-established under forced control. The spring can especially also be formed by a leaf spring, but in principle, a compression spring, a tension spring, or a helical spring is also applicable.

[0011] For this purpose, the pressure member can have a first guiding surface that acts on the threaded member in the engagement position. The pressure member can also have a second guiding surface that acts on the threaded member in the adjustment position. This design can not only simplify the operation but also further improve the process reliability. For this reason, it is also beneficial that the side of the threaded member facing the pressure member has a third guiding surface that is inclined from the outside to the inside relative to the longitudinal axis to abut against the first guiding surface and the second guiding surface.

[0012] To avoid wedging or tilting, the first guiding surface and the second guiding surface can be rounded on the side facing the longitudinal axis.

[0013] Also particularly preferably, the nut part has an annular outer part that contains the bolt and has two opposite side lugs, and the pressure member is arranged on the side lugs. Since the threaded member and the pressure member are permanently fitted together, the outer part can reliably hold the nut part together.

[0014] For this purpose, a first guide pin can be formed on each of the side lugs, and the pressure member is guided on the first guide pin with a long hole tangent to the longitudinal axis, thereby achieving axial fixation while ensuring radial guidance.

[0015] In addition, the transverse channel can penetrate the threaded member perpendicular to the longitudinal axis of the internal thread, and the threaded member is placed on the radially inward second guide pin by using this transverse channel. In this way, the inclined movement of the threaded member relative to the longitudinal axis is strengthened, and the cohesion of the nut part is improved.

[0016] Without departing from the scope of the present invention, the features and combinations of features in the above-mentioned summary of the invention and the features and combinations of features described and / or illustrated in the following description of the drawings and / or the drawings can be used not only in the various combinations given, but also in other combinations or alone. Therefore, embodiments that are not clearly illustrated or described in the drawings but are generated by combining individual features according to the described embodiments should also be regarded as embodiments covered and disclosed by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For more advantages, features and details of the present invention, please refer to the claims, the following preferred embodiments and the drawings. In the drawings:

[0018] Figure 1 A perspective view showing a quick-release threaded connection mechanism between a bolt and a nut part;

[0019] Figure 2 A longitudinal sectional view showing the threaded member of the nut part;

[0020] Figure 3 A longitudinal sectional view showing the bolt and the nut part, wherein the threaded member is in an engaged position threadedly engaged with the bolt;

[0021] Figure 4 Shows corresponding to Figure 3 ... of the view, wherein the threaded member is in an adjusted position disengaged from the thread of the bolt.

[0022] LIST OF REFERENCE NUMERALS

[0023] 1 Threaded connection mechanism

[0024] 2 External thread

[0025] 3 Bolt

[0026] 4 Nut part

[0027] 5 Internal thread

[0028] 6 Threaded member

[0029] 7 Longitudinal axis

[0030] 8 Through hole

[0031] 9 Pressure member

[0032] 10 Return spring

[0033] 11 First guiding surface

[0034] 12 Second guiding surface

[0035] 13 Third guiding surface

[0036] 14 Exterior

[0037] 15 Side overlapping part

[0038] 16 First guide pin

[0039] 17 Elongated hole

[0040] 18 Transverse duct

[0041] α Angle Specific implementation manner

[0042] Figure 1 It is shown that the threaded connection mechanism 1 is formed by a bolt 3 having an external thread 2 and a nut portion 4 having an internal thread 5. The nut portion 4 has a threaded member 6 formed with the internal thread 5. Figure 2 It is also shown that a through hole 8 passing through the threaded member 6 is at an angle α with respect to the longitudinal axis 7 of the internal thread 5. The diameter of the through hole 8 is selectively chosen, that is, larger than the outer diameter of the internal thread 5 and smaller than the outer diameter of the threaded member 6, so that the internal thread 5 is drilled on the inclined side of the through hole 8, while a sufficient thread depth is retained on the opposite side of the internal thread 5. The angle α is taken from the range of 2° to 45°, preferably from the range of 5° to 35°, and more preferably from the range of 10° to 25°.

[0043] As Figure 1 、 Figure 3 and Figure 4 shown, the nut portion 4 also has a pressure member 9, which can be radially adjusted with respect to the longitudinal axis 7 between an engagement position where the internal thread 5 and the external thread 2 are engaged and an adjustment position where the internal thread 5 and the external thread 2 are loosened. For this purpose, the pressure member 9 is acted on by a return spring 10, which adjusts the pressure member 9 to the engagement position and then fixes it.

[0044] The pressure member 9 has a first guiding surface 11 and a second guiding surface 12. The first guiding surface 11 acts on the threaded member 6 at the engagement position, and the second guiding surface 12 acts on the threaded member 6 at the adjustment position. In addition, one side of the threaded member 6 facing the pressure member 9 has a third guiding surface 13, which is inclined from the outside to the inside with respect to the longitudinal axis 7 to abut against the first guiding surface 11 and the second guiding surface 12.

[0045] Figure 3 and Figure 4 In particular, it is shown that the first guiding surface 11 and the second guiding surface 12 are rounded on the side facing the longitudinal axis.

[0046] The nut part 4 also has an annular outer part 14, which encloses the bolt 3 and has two opposite side abutments 15 on which the pressure piece 9 is seated. The nut part 4 is formed by the three parts of the outer part 14, the threaded piece 6 and the pressure piece 9. The way these three parts are joined together is that first guide pins 16 are each formed on the side abutments 15, and the pressure piece 9 is axially fixed to the first guide pins 16 and radially guided by means of oblong holes 17 tangential to the longitudinal axis 7. In addition, a transverse passage 18 runs through the threaded piece 6 perpendicular to the longitudinal axis 7 of the internal thread 5, and the threaded piece 6 is seated on second guide pins directed radially inwards by means of the transverse passage 18.

[0047] In Figure 3 the configuration, if the bolt 3 is screwed downwards, a reaction force directed upwards is generated, which is transmitted to the outer part 14 by form-fitting. This means that in this application the threaded connection does not become loose. In addition, an axial force can also be applied downwards to the bolt 3, so that the threaded piece 6 is pulled downwards, thus achieving Figure 4 the configuration for rapid adjustment. Conversely, if an axial force is applied upwards to the bolt 3, the position of the threaded piece 6 is held and fixed by engagement, preventing the bolt 3 from slipping upwards to Figure 3 the configuration shown.

[0048] Figure 4 The configuration shown can also be achieved by radially adjusting the pressure piece 9 against the force of the return spring 10, where the return spring 10 automatically resumes its Figure 3 configuration after being released.

Claims

1. A threaded quick-connection mechanism (1), comprising a bolt (3) having an external thread (2) and a nut portion (4) having an internal thread (5), characterized in that, The nut part has a threaded member (6), and an internal thread (5) is formed in the threaded member (6); and a through hole (8) passing through the threaded member (6) forms an angle (α) with the longitudinal axis (7) of the internal thread (5), and the diameter of the through hole (8) is larger than the outer diameter of the internal thread (5) and smaller than the outer diameter of the threaded member (6).

2. The threaded connection mechanism (1) according to claim 1, characterized in that, The angle (α) is taken from the range of 2° to 45°, preferably from the range of 5° to 35°, and more preferably from the range of 10° to 25°.

3. The threaded connection mechanism (1) according to claim 1 or 2, characterized in that, The nut part (4) has a pressure member (9), and the pressure member (9) can be radially adjusted relative to the longitudinal axis (7) between an engagement position where the internal thread (5) and the external thread (2) are engaged and an adjustment position where the internal thread (5) and the external thread (2) are loosened.

4. The threaded connection mechanism (1) according to claim 3, characterized in that, The pressure member (9) is acted on by a return spring (10), and the return spring (10) adjusts the pressure member (9) to the engagement position.

5. The threaded connection mechanism (1) according to claim 3 or 4, characterized in that, The pressure member (9) has a first guiding surface (11), and the first guiding surface (11) acts on the threaded member (6) at the engagement position.

6. The threaded quick-connect mechanism (1) according to any one of claims 3 to 5, characterized in that, The pressure member (9) has a second guiding surface (12), and the second guiding surface (12) acts on the threaded member (6) at the adjustment position.

7. The threaded connection mechanism (1) according to claim 6, characterized in that, One side of the threaded member (6) facing the pressure member (9) has a third guiding surface (13), and the third guiding surface (13) inclines from outside to inside with respect to the longitudinal axis (7) to abut against the first guiding surface (11) and the second guiding surface (12).

8. The threaded quick-connection mechanism (1) according to claim 7, characterized in that, The first guiding surface (11) and the second guiding surface (12) are rounded on the side facing the longitudinal axis (7).

9. The threaded connection mechanism (1) according to any one of claims 3 to 8, characterized in that, The nut part (4) has an annular outer part (14), the outer part (14) contains the bolt (3) and has two opposite side abutting parts (15), and the pressure member (9) is arranged on the side abutting parts (15).

10. The threaded connection mechanism (1) according to claim 9, characterized in that, First guide pins (16) are respectively formed on the side abutting parts (14), and the pressure member (9) is axially fixed to the first guide pins (16) with a long hole (17) tangent to the longitudinal axis (7) and radially guided.

11. The threaded quick-connection mechanism (1) according to claim 9 or 10, characterized in that, A transverse passage (18) passes through the threaded member (6) perpendicular to the longitudinal axis (7) of the internal thread (5), and the threaded member (6) is arranged on a radially inward second guide pin through the transverse passage (18).

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