Coupling structure with adjustable transmission direction

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a transmission direction adjustable coupling structure which comprises a driving shaft, and threaded holes which are symmetrically distributed are formed in the peripheral face of the driving shaft. The screw is arranged in the threaded hole in a threaded manner; the reset spring is mounted in the threaded hole; the bottom end of the reset spring is connected with the stop block; the driven shaft is installed at one end of the driving shaft, a key groove is formed in the driven shaft, and the driving shaft is connected with the driven shaft by clamping the key groove through the stop block. In the coupling structure, two rows of key grooves in the forward direction and the reverse direction are formed and are connected to the forward key groove and the reverse key groove in a switching mode by being matched with the stop block, transmission direction adjustment can be achieved, and the application range is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to an adjustable transmission direction coupling structure. Background Art

[0002] A coupling structure is a mechanical connection structure used in mechanical transmission to connect two shafts in different mechanisms, enabling the two shafts to rotate together and transmit torque, and plays an important role in various mechanical and industrial automation applications.

[0003] Currently, in the coupling structure, only a single keyway is provided. After the driven shaft is connected to the driving shaft, the relative position remains unchanged, and the transmission direction can only be kept consistent, with a small scope of application. Moreover, when the driven shaft needs to reverse the transmission direction with respect to the driving shaft, the driving shaft will reverse together, resulting in serious damage to the motor and equipment.

[0004] Therefore, this patent provides an adjustable transmission direction coupling structure. Summary of the Utility Model

[0005] In order to overcome the shortcomings that in the current coupling structure, only a single keyway is provided, the relative position remains unchanged after the driven shaft is connected to the driving shaft, the transmission direction can only be kept consistent, and the scope of application is small, the utility model provides an adjustable transmission direction coupling structure.

[0006] To achieve the above problems, the utility model adopts the following technical solutions: An adjustable transmission direction coupling structure includes a driving shaft, symmetrically distributed threaded holes are provided on the outer peripheral surface of the driving shaft; screws, the threaded holes are internally threaded with screws; a return spring, a return spring is installed in the threaded hole; a stop block, the bottom end of the return spring is connected to the stop block; a driven shaft, a driven shaft is installed at one end of the driving shaft, a keyway is provided on the driven shaft, and the driving shaft and the driven shaft are connected by the stop block clamping the keyway to achieve power transmission.

[0007] In one embodiment, the driven shaft and the driving shaft are in hole fit.

[0008] In one embodiment, arrow marks in different directions are provided beside the screws.

[0009] In one embodiment, the keyway is divided into two columns in the forward and reverse directions.

[0010] In one embodiment, it further includes: a limit ring, a limit ring is sleeved on one end of the driving shaft close to the driven shaft; a clamping rod, a clamping rod is slidably arranged on the side of the limit ring, an annular clamping groove is provided at one end of the driven shaft close to the limit ring, and one end of the clamping rod can be clamped into the annular clamping groove; a pull rod, a pull rod is arranged at the other end of the clamping rod; a return spring, a return spring is connected between the clamping rod and the limit ring.

[0011] In one embodiment, it further includes: a connecting sleeve, one end of the driven shaft away from the driving shaft is sleeved with the connecting sleeve; a connecting block, the connecting block is fixedly connected to the middle position inside the connecting sleeve, a connecting groove is provided in the middle of the left end of the driven shaft, and the connecting block can be inserted into the connecting groove to connect the connecting sleeve and the driven shaft; a positioning block, several positioning blocks are fixedly connected to the inner peripheral surface of the connecting sleeve, several positioning grooves are provided on the outer periphery of the left end of the driven shaft, and the positioning block can be inserted into the positioning groove to realize the firm connection between the connecting sleeve and the driven shaft; a pressing ring, a pressing ring is slidably arranged on the driven shaft, and a return spring, a return spring is connected between the pressing ring and the driven shaft.

[0012] In one embodiment, it further includes: a protective sleeve, the return spring is sleeved with a protective sleeve.

[0013] In one embodiment, it further includes: an anti-slip sleeve, the pull rod is sleeved with an anti-slip sleeve.

[0014] In one embodiment, it further includes: a damping ring, the clamping rod is sleeved with a damping ring.

[0015] Compared with the prior art, the utility model has the following technical effects: 1. In the coupling structure, two rows of key grooves in the forward and reverse directions are provided, and by cooperating with the stop block, it can be switched to connect to the forward and reverse key grooves, so as to realize the adjustment of the transmission direction and increase the scope of application.

[0016] 2. The driven shaft is limited by the clamping rod and the annular clamping groove in a clamping fit, so as to prevent the driven shaft from sliding or disengaging when transmitting power in one direction and ensure the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure diagram of the utility model.

[0018] Figure 2 In the utility model Figure 1 exploded view.

[0019] Figure 3 It is a three-dimensional sectional view of the limiting ring, clamping rod and damping ring of the utility model.

[0020] Figure 4 It is a three-dimensional structure diagram of the clamping rod, pull rod and return spring of the utility model.

[0021] Figure 5 It is a three-dimensional sectional view of the connecting sleeve, connecting block and pressing ring of the utility model.

[0022] Figure 6 It is a three-dimensional sectional view of the pressing ring, return spring and protective sleeve of the utility model.

[0023] Figure 7 This is a three-dimensional cross-sectional view of the connecting sleeve, clamping block and connecting block of the present utility model.

[0024] Meanings of the reference numerals in the figure: 1, driving shaft; 2, screw; 3, return spring; 4, stop block; 5, driven shaft; 6, keyway; 7, annular clamping groove; 8, limiting ring; 9, clamping rod; 10, pull rod; 11, return spring; 12, connecting sleeve; 13, clamping block; 14, connecting block; 15, connecting groove; 16, clamping groove; 17, pressing ring; 18, return spring; 19, protective sleeve; 20, anti-slip sleeve; 21, damping ring. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] Please refer to Figure 1 and Figure 2 , an adjustable transmission direction coupling structure, including a driving shaft 1, on the outer peripheral surface of which there are symmetrically distributed threaded holes on the left and right; a screw 2, which is threadedly arranged in the threaded hole, and there are arrow marks in different directions beside the screw 2 to mark the transmission direction; a return spring 3, which is installed in the threaded hole; a stop block 4, the bottom end of the return spring 3 is connected with the stop block 4; a driven shaft 5, one end of the driving shaft 1 is installed with the driven shaft 5, the driven shaft 5 and the driving shaft 1 are in hole fit, the connection is simple and convenient. In addition, a keyway 6 is provided on the driven shaft 5, and the driving shaft 1 and the driven shaft 5 are connected by the stop block 4 clamping the keyway 6 to realize power transmission, and the keyway 6 is divided into two columns in the forward and reverse directions, which is convenient for adjusting the transmission direction.

[0028] When in use, tighten the screw 2 in the corresponding arrow direction to make it move down to fix the corresponding stop block 4, and the stop block 4 will then be clamped into the lower keyway 6 to connect the driving shaft 1 and the driven shaft 5. Then, unscrew the screw 2 in the other direction to release the corresponding stop block 4, and the stop block 4 will disengage from the keyway 6. During transmission, only the single-row keyway 6 in one direction generates stress, so that unidirectional power transmission in any direction can be realized. If both screws 2 are tightened, the two stop blocks 4 will be clamped into the corresponding keyways 6 to lock the driving shaft 1 and the driven shaft 5, and bidirectional power transmission can be realized.

[0029] Embodiment 2

[0030] Based on Embodiment 1, please refer to Figure 3 and Figure 4 , and further includes: a limiting ring 8, a limiting ring 8 is sleeved on one end of the driving shaft 1 close to the driven shaft 5; a clamping rod 9, a clamping rod 9 is slidably arranged on the side of the limiting ring 8, and an annular clamping groove 7 is provided at one end of the driven shaft 5 close to the limiting ring 8. One end of the clamping rod 9 can be clamped into the annular clamping groove 7 to limit the driven shaft 5, so as to prevent the driven shaft 5 from sliding or disengaging during one-way power transmission, and ensure the connection stability; a pull rod 10, a pull rod 10 is arranged at the other end of the clamping rod 9; a return spring 11, a return spring 11 is connected between the clamping rod 9 and the limiting ring 8; an anti-slip sleeve 20, an anti-slip sleeve 20 is sleeved on the pull rod 10 to play an anti-slip role; a damping ring 21, a damping ring 21 is sleeved on the clamping rod 9, and the frictional resistance between the clamping rod 9 and the limiting ring 8 is increased through the damping ring 21 to prevent the clamping rod 9 from moving during limiting.

[0031] Please refer to Figures 5 - 7 , and further includes: a connecting sleeve 12, a connecting sleeve 12 is sleeved on the end of the driven shaft 5 away from the driving shaft 1; a connecting block 14, a connecting block 14 is fixedly connected to the middle position inside the connecting sleeve 12, a connecting groove 15 is provided in the middle of the left end of the driven shaft 5, and the connecting block 14 can be clamped into the connecting groove 15 to connect the connecting sleeve 12 and the driven shaft 5; a positioning block 13, four positioning blocks 13 evenly distributed are fixedly connected to the inner peripheral surface of the connecting sleeve 12, and four positioning grooves 16 evenly distributed are provided on the outer circumference of the left end of the driven shaft 5. The positioning block 13 can be clamped into the positioning groove 16, so as to realize the firm connection between the connecting sleeve 12 and the driven shaft 5; a pressing ring 17, a pressing ring 17 is slidably arranged on the driven shaft 5, a return spring 18, a return spring 18 is connected between the pressing ring 17 and the driven shaft 5; a protective sleeve 19, a protective sleeve 19 is sleeved outside the return spring 18, and the return spring 18 is protected through the protective sleeve 19 to prevent small foreign objects from being stuck.

[0032] During actual use, the connecting sleeve 12 can be used to connect the same driven shaft 5 in the reverse direction, which is convenient for connecting the driving device in different directions. At the same time, under the elastic pressure of the return spring 18, the pressing ring 17 is in close contact with the connecting sleeve 12 to press and reinforce it. Subsequently, by pulling the connecting sleeve 12 to move it horizontally away from the driven shaft 5, the connected driven shaft 5 can be removed.

[0033] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. A coupling structure with adjustable transmission direction, characterized in that: include: A driving shaft (1), wherein the outer peripheral surface of the driving shaft (1) is provided with symmetrically distributed threaded holes; A screw (2), wherein the threaded hole is threadedly provided with the screw (2); A return spring (3), wherein the return spring (3) is installed in the threaded hole; A stop block (4), the bottom end of the return spring (3) is connected to the stop block (4); A driven shaft (5), wherein one end of the driving shaft (1) is provided with a driven shaft (5), and a keyway (6) is provided on the driven shaft (5). The driving shaft (1) is connected to the driven shaft (5) by the stop block (4) locking the keyway (6) to achieve power transmission.

2. The coupling structure with adjustable transmission direction according to claim 1, characterized in that: The driven shaft (5) and the driving shaft (1) are matched through a hole.

3. The coupling structure with adjustable transmission direction according to claim 2, characterized in that: Arrow marks in different directions are arranged next to the screw (2).

4. The coupling structure with adjustable transmission direction according to claim 3, characterized in that: The keyway (6) is divided into two rows, a forward row and a reverse row.

5. The coupling structure with adjustable transmission direction according to claim 4, characterized in that: Also includes: A limiting ring (8), wherein one end of the driving shaft (1) close to the driven shaft (5) is sleeved with the limiting ring (8); A clamping rod (9), the clamping rod (9) is slidably arranged on the side of the limiting ring (8), an annular clamping groove (7) is arranged at one end of the driven shaft (5) close to the limiting ring (8), and one end of the clamping rod (9) can be clamped into the annular clamping groove (7); A pull rod (10), wherein the other end of the clamping rod (9) is provided with a pull rod (10); A return spring (11), wherein a return spring (11) is connected between the clamping rod (9) and the limiting ring (8).

6. The coupling structure with adjustable transmission direction according to claim 5, characterized in that: Also includes: A connecting sleeve (12), wherein one end of the driven shaft (5) away from the driving shaft (1) is sleeved with the connecting sleeve (12); A connecting block (14), wherein the connecting block (14) is fixedly connected to the middle position inside the connecting sleeve (12), and a connecting groove (15) is provided in the middle of the left end of the driven shaft (5), and the connecting block (14) can be inserted into the connecting groove (15) to connect the connecting sleeve (12) and the driven shaft (5); A plurality of locking blocks (13) are fixedly connected to the inner circumference of the connecting sleeve (12); a plurality of locking grooves (16) are arranged on the outer circumference of the left end of the driven shaft (5); the locking blocks (13) can be inserted into the locking grooves (16) to achieve a firm connection between the connecting sleeve (12) and the driven shaft (5); A pressure ring (17), the driven shaft (5) is slidably provided with a pressure ring (17); A return spring (18), wherein a return spring (18) is connected between the pressure ring (17) and the driven shaft (5).

7. The coupling structure with adjustable transmission direction according to claim 6, characterized in that: Also includes: A protective sleeve (19), the outer portion of the return spring (18) is covered with a protective sleeve (19).

8. The coupling structure with adjustable transmission direction according to claim 7, characterized in that: Also includes: An anti-slip sleeve (20), wherein the pull rod (10) is sleeved with an anti-slip sleeve (20).

9. The coupling structure with adjustable transmission direction according to claim 8, characterized in that: Also includes: A damping ring (21), wherein the clamping rod (9) is sleeved with a damping ring (21).

Images