A one-way transmission shaft mechanism

Abstract

This invention relates to the field of transmission machinery, specifically to a one-way transmission shaft mechanism, comprising a housing, a rotating shaft, an end cover, and a locking pin. The housing has a central annular groove with a first shaft hole at its center and a first pin hole at the sidewall of the groove. The end cover has a central second shaft hole with the same diameter as the first shaft hole and a second pin hole around the second shaft hole. The rotating shaft passes through both the first and second shaft holes sequentially. A geared disc is located inside the annular groove and outside the shaft, with evenly distributed semi-circular grooves at its edge that mate with the first pin hole. The locking pin passes through both the second and first pin holes sequentially, and a second spring is provided between the end of the locking pin and the bottom of the first pin hole. Compared with existing technologies, this mechanism has the advantages of simple structure, reliable operation, good lubrication environment, strong reverse braking capability, and safety features.

Description

Technical Field

[0001] This invention relates to the field of transmission machinery, and more specifically to a one-way transmission shaft mechanism. Background Technology

[0002] In the field of mechanical transmission, many designs require the output shaft to rotate only in one direction, preventing rotation in the other. The most common approach is using a ratchet and pawl mechanism. This technology is primarily designed to address the shortcomings of unidirectional ratchet and pawl transmissions: 1. Firstly, this mechanism relies on a single pawl for braking in the reverse direction, resulting in insufficient braking capacity. 2. The ratchet and pawl are separate, preventing a compact design and occupying excessive space. 3. It is difficult to design a ratchet and pawl mechanism within a sealed space with an outer casing and effective lubrication, which severely impacts service life and reliability. 4. The ratchet and pawl mechanism only allows unidirectional rotation and lacks the ability to lock at a specific position when needed, posing a significant reliability risk.

[0003] Therefore, we designed this unidirectional drive shaft mechanism with self-locking function to overcome the shortcomings of the existing ones. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a one-way transmission shaft mechanism.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is a one-way transmission shaft mechanism, including a mechanism housing, a rotating shaft, an end cover and a locking pin. The mechanism housing has an annular groove at its center, a first shaft hole at the center of the annular groove, and a first pin hole at the side wall of the annular groove.

[0006] The end cap body has a second shaft hole with the same diameter as the first shaft hole at its center, and the end cap body has a second pin hole around the second shaft hole. The rotating shaft passes through the first shaft hole and the second shaft hole in sequence.

[0007] The rotating shaft is located inside the annular groove and has a toothed disc outside the shaft body. The edge of the toothed disc is uniformly provided with semi-circular grooves that cooperate with the first pin hole.

[0008] The locking pin passes through the second pin hole and the first pin hole in sequence. A second spring is provided between the end of the locking pin and the bottom of the first pin hole. The locking pin body is provided with a slot.

[0009] The shaft extends to one end of the end cover and is fitted with an unlocking pressure plate. A first spring is fitted on the outer circumference of the shaft between the unlocking pressure plate and the end cover. The unlocking pressure plate abuts against the locking pin at the end away from the outer shell of the mechanism. A back cap is provided on the side of the unlocking pressure plate away from the first spring. The central through hole of the back cap is connected to the outer circumference of the shaft by a thread.

[0010] As an improvement, the outer shell of the mechanism is provided with a first connecting hole at its edge, and the end cap is provided with a second connecting hole at its edge that corresponds to the position of the first connecting hole. The outer shell of the mechanism and the end cap are fixed together by locking screws that pass through the first connecting hole and the second connecting hole in sequence.

[0011] As an improvement, keyways are provided at both ends of the rotating shaft.

[0012] As an improvement, the diameter of the toothed disc is slightly smaller than the inner diameter of the annular groove.

[0013] As an improvement, the bottom surface of the locking pin slot is set at an acute angle to the axis of the locking pin, and the distance between the top surface of the slot and the bottom surface of the slot is slightly greater than the thickness of the gear plate.

[0014] The advantages of this invention compared to the prior art are:

[0015] It has a simple structure, reliable operation, good lubrication environment, strong reverse braking capability, and safety protection function. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the one-way mechanism's outer shell from a first-person perspective.

[0017] Figure 2 This is a schematic diagram of the external second-view structure of the unidirectional mechanism's outer shell;

[0018] Figure 3 This is a schematic diagram of the first explosive structure of the outer shell of the one-way mechanism;

[0019] Figure 4 This is a schematic diagram of the second explosive structure of the outer shell of the one-way mechanism;

[0020] Figure 5 This is a cross-sectional view of the structure after removing the pivot.

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the outer shell of a one-way mechanism;

[0022] Figure 7 This is a schematic diagram of the connection structure between the outer shell of the mechanism and the locking pin.

[0023] Figures 1-7 As shown: 1. Mechanism housing, 101. First connecting hole, 102. First pin hole, 103. First shaft hole, 104. Annular groove, 2. Rotating shaft, 201. Keyway, 3. Gear plate, 301. Semicircular groove, 4. End cap, 401. Second connecting hole, 402. Second pin hole, 403. Second shaft hole, 5. Locking pin, 501. Slot, 6. Unlocking pressure plate, 7. Back cap, 8. First spring, 9. Locking screw, 10. Second spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of the present invention, "multiple" means at least two.

[0028] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0029] The following detailed description of a one-way transmission shaft mechanism of the present invention is provided in conjunction with the accompanying drawings.

[0030] Combined with appendix Figures 1-7A one-way drive shaft mechanism includes a mechanism housing 1, a rotating shaft 2, an end cover 4, and a locking pin 5. The mechanism housing 1 has an annular groove 104 at its center, a first shaft hole 103 at its center, and a first pin hole 102 at the side wall of the annular groove 104.

[0031] The end cap 4 has a second shaft hole 403 with the same diameter as the first shaft hole 103 at its center. The end cap 4 has a second pin hole 402 around the second shaft hole 403. The rotating shaft 2 passes through the first shaft hole 103 and the second shaft hole 403 in sequence.

[0032] The rotating shaft 2 is located inside the annular groove 104 and has a gear disk 3 outside the shaft body. The edge of the gear disk 3 is uniformly provided with semi-circular grooves 301 that cooperate with the first pin hole 102.

[0033] The locking pin 5 is inserted into the second pin hole 402 and the first pin hole 102 in sequence. A second spring 10 is provided between the end of the locking pin 5 and the bottom of the first pin hole 102. The locking pin 5 has a groove 501.

[0034] The shaft 2 extends to one end of the end cover 4 and is fitted with an unlocking pressure plate 6. A first spring 8 is fitted on the outer circumference of the shaft 2 between the unlocking pressure plate 6 and the end cover 4. The unlocking pressure plate 6 abuts against the locking pin 5 at the end away from the outer shell 1 of the mechanism. A back cap 7 is provided on the side of the unlocking pressure plate 6 away from the first spring 8. The central through hole of the back cap 7 is connected to the outer circumference of the shaft 2 by a thread.

[0035] In a preferred embodiment, the outer shell 1 of the mechanism is provided with a first connecting hole 101 at its edge, and the end cover 4 is provided with a second connecting hole 401 at its edge, which is arranged corresponding to the position of the first connecting hole 101. The outer shell 1 of the mechanism and the end cover 4 are fixed together by locking screws 9 that pass through the first connecting hole 101 and the second connecting hole 401 in sequence.

[0036] In a preferred embodiment of this invention, keyways 201 are provided at both ends of the shaft 2.

[0037] In a preferred embodiment of this invention, the diameter of the toothed disc 3 is slightly smaller than the inner diameter of the annular groove 104.

[0038] In a preferred embodiment of this invention, the bottom surface of the locking pin 5 slot 501 forms an acute angle with the axis of the locking pin 5, and the distance between the top surface of the slot 501 and the bottom surface of the slot 501 is slightly greater than the thickness of the gear plate 3.

[0039] In a specific implementation of the present invention, the rotating shaft 2 is inserted into the first shaft hole 103 at the center of the outer shell 1 of the mechanism. At this time, the gear disk 3 is placed inside the annular groove 104. The end cover 4 is fixed to the outer shell 1 of the mechanism by the locking screw 9. The second spring 10 is placed inside the first pin hole 102. After the semi-circular groove 301 of the gear disk 3 is aligned with the first pin hole 102, the pin 5 is inserted into the second pin hole 402 and the first pin hole 102 in sequence. The first spring 8, the unlocking pressure plate 6 and the back cap 7 are sequentially sleeved on the outer peripheral surface of the rotating shaft 2 on the side of the shaft near the end cover. The unlocking pressure plate 6 abuts against the end of the locking pin 5.

[0040] How to use:

[0041] 1. Rotate the shaft, as follows Figure 6 As shown, the shaft can only rotate clockwise. At this time, the edge of the semi-circular groove on the gear plate will press the inclined surface on the locking pin downward and rotate it. When rotating in the reverse direction, the highest point of the inclined surface on the locking pin is higher than the bottom surface of the semi-circular groove, so it cannot rotate in the opposite direction.

[0042] 2. When the locking pins are engaged with the semi-circular holes on the gear plate, simply rotate one or more locking pins 180° so that the grooves on them face away from the semi-circular grooves. At this time, the rotating shaft is locked and cannot be rotated in either direction.

[0043] 3. Unlocking: When the back cap is tightened, the unlocking disc presses down on each locking pin. When the highest point of the inclined surface in the locking pin groove is lower than the bottom surface of the upper semi-circular groove of the gear plate, the rotating shaft can then rotate in both directions.

[0044] 4. Applications:

[0045] 1. It can replace many currently used ratchet and pawl mechanisms;

[0046] 2. A tensioning rope is installed at one end of the shaft, and a handle or motor is installed at the other end. It can be used for tensioning ropes or safety belts, and has wide applications in mountaineering equipment, medical physiotherapy equipment, and tensioning rope devices for binding goods in long-distance transportation.

[0047] 3. When this mechanism is applied to mechanical transmission, for example, by installing gears on both sides, it can be used as a clutch or coupling that transmits power in reverse. That is, it can drive the machine when rotating forward, but slips and cannot transmit power when rotating in reverse.

[0048] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A one-way transmission shaft mechanism, characterized in that: The mechanism includes a housing (1), a rotating shaft (2), an end cap (4), and a locking pin (5). The housing (1) has an annular groove (104) at its center, a first shaft hole (103) at its center, and a first pin hole (102) at the side wall of the annular groove (104). The end cap (4) has a second shaft hole (403) with the same diameter as the first shaft hole (103) at its center. The end cap (4) has a second pin hole (402) around the second shaft hole (403). The rotating shaft (2) passes through the first shaft hole (103) and the second shaft hole (403) in sequence. The rotating shaft (2) is located inside the annular groove (104) and has a gear disk (3) outside the shaft body. The edge of the gear disk (3) is uniformly provided with a semi-circular groove (301) that cooperates with the first pin hole (102). The locking pin (5) is inserted into the second pin hole (402) and the first pin hole (102) in sequence. A second spring (10) is provided between the end of the locking pin (5) and the bottom of the first pin hole (102). The locking pin (5) has a groove (501). The shaft (2) extends to one end of the end cover (4) and is fitted with an unlocking pressure plate (6). A first spring (8) is fitted on the outer circumference of the shaft (2) between the unlocking pressure plate (6) and the end cover (4). The unlocking pressure plate (6) abuts against the locking pin (5) at the end away from the outer shell (1) of the mechanism. A back cap (7) is provided on the side of the unlocking pressure plate (6) away from the first spring (8). The central through hole of the back cap (7) is connected to the outer circumference of the shaft (2) by a thread.

2. The one-way transmission shaft mechanism according to claim 1, characterized in that: The outer shell (1) of the mechanism is provided with a first connecting hole (101) at its edge, and the end cap (4) is provided with a second connecting hole (401) at its edge, which is arranged in a position corresponding to the first connecting hole (101). The outer shell (1) of the mechanism and the end cap (4) are fixed together by locking screws (9) that pass through the first connecting hole (101) and the second connecting hole (401) in sequence.

3. The unidirectional transmission shaft mechanism according to claim 1, characterized in that: The rotating shaft (2) has keyways (201) at both ends.

4. The unidirectional transmission shaft mechanism according to claim 1, characterized in that: The diameter of the toothed disc (3) is slightly smaller than the inner diameter of the annular groove (104).

5. A one-way transmission shaft mechanism according to claim 1, characterized in that: The bottom surface of the locking pin (5) slot (501) is set at an acute angle with the axis of the locking pin (5), and the distance between the top surface of the slot (501) and the bottom surface of the slot (501) is slightly greater than the thickness of the gear plate (3).

Images