Reverse rotation limiting mechanism and one-way rotation device

Abstract

The utility model provides a reverse rotation limiting mechanism and one-way rotating equipment, which comprise a rotating shaft piece, a limiting disc, a direction stopping pin and a direction stopping driving piece, the rotating shaft piece is arranged in a gear hole of the limiting disc in a penetrating manner, and a containing groove is formed in the rotating shaft piece; one-way rotation of a part installed on the rotating shaft piece is achieved through matching of the direction stopping pin which is arranged in the containing groove and can move in the radial direction of the rotating shaft and the limiting teeth of the gear hole, namely, the direction stopping pin is located on the inner ring of the limiting disc and does not occupy the space outside the limiting disc, the space inside the rotating shaft piece is utilized through arrangement and movement of the direction stopping pin, and therefore the rotating shaft piece can rotate more stably. The distance between the limiting disc and the rotating shaft piece can be set to be very small, so that compared with a traditional ratchet wheel assembly, the overall size of the reverse rotation limiting mechanism is greatly reduced, the one-way rotating function can be practically achieved, and the reverse rotation limiting mechanism can be suitable for small equipment with the portable requirement and the handheld operation requirement. In addition, the reverse rotation limiting mechanism further has the advantages of being simple in structure, small in part number and easy to assemble and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of limiting mechanisms, and in particular relates to a reverse limiting mechanism and a one-way rotating device. Background Art

[0002] In some devices, it is necessary to use a rotating component that can rotate in one direction, that is, under the drive of the corresponding driving mechanism, the rotating component needs to be able to rotate basically unimpeded in a predetermined working rotation direction, while rotation in the direction opposite to the working rotation direction is restricted or completely prevented.

[0003] In the prior art, the unidirectional rotation of the rotating part is generally achieved by setting a one-way bearing or a ratchet assembly between the driving mechanism and the rotating part. However, the cost of the one-way bearing itself is relatively high. The one-way bearing needs to be keyed with the rotating shaft during installation, so it is also necessary to additionally process the keyway. The processing technology is relatively complicated, which further increases the cost, so that the use of the one-way bearing is limited, especially in small civilian equipment with low prices. The ratchet assembly usually includes a disc, a rotatable ratchet installed in the middle of the disc, and one or more ratchets installed on the edge of the disc for cooperating with the teeth on the ratchet to achieve unidirectional rotation. Since the ratchet is set next to the ratchet, the two are completely separate components, and the ratchet needs to rotate within a certain range, resulting in a large installation and operation space required for the ratchet assembly as a whole. Therefore, it cannot be used in many devices, especially in small devices that need to be portable and handheld. Usually, there is no space for installing the ratchet assembly. At present, in such small devices, high-cost one-way bearings have to be used. Utility Model Content

[0004] The utility model is designed to solve the above problems, and aims to provide a reverse limiting mechanism with small overall size, low cost, easy assembly and maintenance, and a one-way rotating device using the mechanism. The utility model adopts the following technical solutions:

[0005] The utility model provides a reverse limiting mechanism, which is used to make a component installed on the reverse limiting mechanism rotate in one direction. The reverse limiting mechanism has the following technical features: a rotating shaft, which is used to drive the component to rotate, and has a receiving groove extending along its radial direction; a limiting plate, which has a gear hole, and the gear hole has a plurality of limiting teeth, the rotating shaft is inserted into the gear hole and the receiving groove faces the limiting teeth; a stop pin, which can be movably embedded in the receiving groove along the radial direction, and one end of which is a matching portion located outside the receiving groove, which is used to engage with the The limit teeth cooperate to realize the unidirectional rotation of the rotating shaft; and the stop driving member is used to drive the stop pin to move outside the accommodating groove, wherein the mating part has: a rotating mating surface, which is inclined relative to the radial direction, and is used to abut against the limit teeth when the rotating shaft is subjected to a positive driving force, and press the stop pin toward the accommodating groove, so that the rotating shaft can rotate in the positive direction; and a stop mating surface, which is parallel to the radial direction, and is used to abut against the limit teeth when the rotating shaft is subjected to a reverse driving force, so as to prevent the rotating shaft from rotating in the reverse direction.

[0006] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein a limiting groove is formed between two adjacent limiting teeth, and the limiting groove has a first side surface and a second side surface, and the first side surface and the second side surface are both perpendicular to the circumference of the gear hole, and the first side surface is used to abut against the stop mating surface when the rotating shaft is subjected to the reverse driving force to prevent the reverse rotation, and the second side surface is used to abut against the rotating mating surface when the rotating shaft is subjected to the forward driving force, so that the stop pin is subjected to the component force of the forward driving force along the radial direction toward the accommodating groove, thereby pressing the stop pin toward the accommodating groove.

[0007] The reverse limiting mechanism provided by the utility model may also have such technical features, wherein the first side surface is parallel to the radial direction, the inclination angle of the second side surface relative to the corresponding first side surface is 30° to 45°, and the inclination angle of the rotating mating surface relative to the radial direction is 10° to 60°.

[0008] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the first side surface and the second side surface are both inclined relative to the radial direction, and relative to the first radial direction of the rotating shaft part passing through the intersection of the first side surface and the second side surface, the first side surface and the second side surface are respectively inclined to both sides, the inclination angle of the first side surface relative to the first radial direction is 5°~20°, the inclination angle of the second side surface relative to the first radial direction is 30°~45°, and the inclination angle of the rotating mating surface relative to the radial direction is 10°~60°.

[0009] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the first side surface and the second side surface are both inclined relative to the radial direction, and relative to the first radial direction of the rotating shaft part passing through the intersection of the first side surface and the second side surface, the first side surface and the second side surface are inclined to the same side, the inclination angle of the first side surface relative to the first radial direction is 5° to 20°, the inclination angle of the second side surface relative to the first radial direction is 30° to 45°, and the inclination angle of the rotating mating surface relative to the radial direction is 10° to 60°.

[0010] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the first side surface and the second side surface are both parallel to the radial direction, and the inclination angle of the rotating mating surface relative to the radial direction is 10° to 60°.

[0011] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the stop pin is columnar, and its side surface includes two mutually parallel planes and two arc surfaces, one of the arc surfaces is the stop mating surface, and the cross-sectional shape of the accommodating groove matches the stop pin.

[0012] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the stop pin is columnar, and its side surface includes a cylindrical surface and a plane, the cylindrical surface is the stop mating surface, and the cross-sectional shape of the accommodating groove matches the stop pin.

[0013] The reverse limiting mechanism provided by the utility model may also have such technical features, wherein the stop pin includes: a metal part, made of wear-resistant metal material, in a columnar shape, one end of which has a plane inclined relative to its axial direction, and one side surface of the metal part is the stop mating surface; and a noise reduction layer, made of wear-resistant and impact-resistant modified material, arranged on the plane of the metal part, and the outer surface of the noise reduction layer is the rotating mating surface.

[0014] The reverse limiting mechanism provided by the utility model may also have such a technical feature, wherein the anti-reversal driving member is an elastic member, which is arranged in the accommodating groove, one end of which abuts against the bottom of the accommodating groove, and the other end abuts against the anti-reversal pin, and the elastic member is any one of a spring, a bent metal sheet strip, a columnar rubber part, and a columnar rubber-plastic part.

[0015] The reverse limiting mechanism provided by the utility model may also have such technical features, wherein the rotating shaft member includes: a rotating shaft mounting disk portion, which is in the shape of a circular disk and is used to mount the rotating shaft member on a driving mechanism; and a rotating shaft column portion, which coaxially extends from the middle of a surface of the rotating shaft mounting disk portion perpendicular to the rotating shaft mounting disk portion and is in the shape of a column, and the accommodating groove is arranged in the middle of the axial direction of the rotating shaft column portion, the width of the accommodating groove is less than half of the diameter of the rotating shaft column portion, and the depth of the accommodating groove is less than 3 / 4 of the diameter of the rotating shaft column portion, and the limiting disk includes: a main body cover portion, which is in the shape of a circular cover, and the gear hole is coaxially arranged in the middle of the top surface of the main body cover portion; and a plurality of mounting block portions, which extend outward from the side of the main body cover portion and are used to mount the limiting disk on the driving mechanism.

[0016] The utility model provides a one-way rotating device, which has the following technical features: the above-mentioned reverse limiting mechanism, which has a rotating shaft; and a rotating component, which is installed on the rotating shaft of the reverse limiting mechanism, and the reverse limiting mechanism enables the rotating component to rotate in one direction.

[0017] Function and effect of utility model

[0018] According to the utility model, the reverse limiting mechanism and the one-way rotation device include a rotating shaft, a limiting disk with a gear hole, a stop pin and a stop driving member. The rotating shaft is inserted into the gear hole of the limiting disk, and a receiving groove is provided on the rotating shaft. The one-way rotation of the component installed on the rotating shaft is achieved by the cooperation of the stop pin arranged in the receiving groove and movable along the radial direction of the rotating shaft and the limiting disk and the plurality of limiting teeth of the gear hole. That is, the stop pin is arranged in the inner ring of the limiting disk, and does not need to occupy the space outside the limiting disk. The setting and movement of the stop pin utilize the space inside the rotating shaft, and the spacing between the limiting disk and the rotating shaft can be set very small. Therefore, compared with the traditional ratchet assembly, the overall size of the reverse limiting mechanism of the utility model is greatly reduced, and it can also effectively realize the function of one-way rotation, and can be applied to small devices with portable needs and handheld operation needs. In addition, the reverse limiting mechanism of the utility model also has the advantages of simple structure, small number of parts, easy assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the reverse limiting mechanism in the first embodiment of the utility model;

[0020] Figure 2 This is a structural exploded view of the reverse limiting mechanism in the first embodiment of the present utility model;

[0021] Figure 3 is a cross-sectional view of the reverse limiting mechanism in the first embodiment of the present utility model;

[0022] Figure 4 It is a cross-sectional view of the rotating shaft member in the first embodiment of the utility model;

[0023] Figure 5 It is a three-dimensional diagram of different angles of the limiting disk in the first embodiment of the utility model;

[0024] Figure 6 It is an orthographic projection diagram of the limiting disk in the first embodiment of the utility model;

[0025] Figure 7 yes Figure 6 An enlarged view of the portion within the middle frame A;

[0026] Figure 8 It is a three-dimensional diagram of the stop pin in the first embodiment of the utility model;

[0027] Fig. 9 It is a side view of the stop pin in the first embodiment of the utility model;

[0028] Fig.10 It is a cross-sectional view of the stop pin in the first embodiment of the utility model;

[0029] Fig.11 It is a cross-sectional view of the reverse limiting mechanism in the first embodiment of the present utility model in the use state;

[0030] Fig.12 It is a three-dimensional diagram of the one-way rotating device in the first embodiment of the utility model;

[0031] Fig.13 It is a cross-sectional view of the one-way rotating device in the first embodiment of the utility model;

[0032] Fig.14 It is a three-dimensional diagram of the stop pin in the second embodiment of the utility model;

[0033] Fig.15 It is an orthographic projection diagram of the stop pin in the second embodiment of the utility model;

[0034] Fig.16 This is a schematic diagram of the structure of the stop pin in the third embodiment of the utility model;

[0035] Fig.17 This is a schematic diagram of the structure of the reverse limiting mechanism in the third embodiment of the present utility model in the use state;

[0036] Fig.18 It is an orthographic projection diagram of the limiting disk in the first modification of the utility model;

[0037] Fig.19 It is an orthographic projection diagram of the limiting disk in the second modification of the utility model;

[0038] Fig. 20It is an orthographic projection diagram of the limiting disk in the third modification of the utility model;

[0039] Fig.21 It is a three-dimensional diagram of the stop driving member in the fourth modification of the utility model.

[0040] Reference numerals:

[0041] Reverse limiting mechanism 10; shaft member 11; shaft mounting plate portion 111; shaft member mounting hole 1111; circular shallow groove 1112; centering groove 1113; shaft column portion 112; accommodating groove 1121; first spring limiting groove 1122; driving surface 1123; shaft end portion 113; first annular groove 114; second annular groove 115; limiting plate 12; main body cover portion 121; gear hole 1211; limiting tooth 1212; limiting groove 1213; first side surface 1213a; second side surface 1213b; arc bottom surface 1213c; giving way notch 1214; mounting block portion 122; outer end surface 122a; limiting plate mounting hole 1221; stop pin 13; stop pin main body portion 131; first flat Surface 131a; second plane 131b; first arc surface 131c; second arc surface 131d; second spring limit groove 1311; mating portion 132; third plane 132a; fourth plane 132b; third arc surface (stop mating surface) 132c; fourth arc surface 132d; outer end surface (rotational mating surface) 132e; noise reduction layer 133; outer surface 133a; cylindrical surface 13a; plane 13b; stop driving member 14; bending portion 141; unidirectional rotating device 100; rotating component 20; cam 21; cam disc 211; pushing column 212; cam connecting member 22; driving mechanism 30; motor 31; reducer 32; third stage gear 323; working rotation direction D1. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the reverse rotation limiting mechanism and the one-way rotation device of the present invention are specifically described below in conjunction with the embodiments and drawings.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] <Example 1>

[0045] Figure 1 : is a three-dimensional diagram of the reverse limiting mechanism in this embodiment, Figure 2 is a cross-sectional view of the reverse limiting mechanism in this embodiment, Figure 3 It is a structural exploded view of the reverse limiting mechanism in this embodiment.

[0046] like Figures 1 to 3 As shown, the reverse rotation limiting mechanism 10 includes a rotating shaft 11 , a limiting disk 12 , a stop pin 13 and a stop driving member 14 .

[0047] Figure 4 It is a cross-sectional view of the rotating shaft member in this embodiment.

[0048] like Figure 3 and Figure 4 As shown, the rotating shaft member 11 includes a rotating shaft mounting disc portion 111 , a rotating shaft column portion 112 and a rotating shaft end portion 113 which are integrally formed and coaxially arranged.

[0049] The rotating shaft mounting plate portion 111 is in the shape of a disk as a whole, and a plurality of through rotating shaft mounting holes 1111 (four in this embodiment) are evenly distributed along the circumference of the edge portion of the rotating shaft mounting plate portion 111, which are used to mount the rotating shaft member 11 on a rotating drive mechanism through fasteners, and the rotating drive mechanism can be, for example, a motor. A circular shallow groove 1112 and a centering groove 1113 are formed in the middle of one surface of the rotating shaft mounting plate portion 111 (the surface not connected to the rotating shaft column portion 112). The centering groove 1113 is arranged in the middle of the bottom of the circular shallow groove 1112, and the bottom of the centering groove 1113 is conical, and the cone is coaxial with the rotating shaft member 11.

[0050] The shaft column 112 is generally cylindrical in shape, extending from the middle of the other surface of the shaft mounting plate 111 perpendicular to the surface direction of the shaft mounting plate 111, and is coaxially arranged with the shaft mounting plate 111. A receiving groove 1121 for receiving the stop pin 13 is provided in the middle of the shaft column 112 in the axial direction. The extending direction of the receiving groove 1121 is the radial direction of the shaft column 112, and its extending length is approximately 3 / 4 of the diameter of the shaft column 112. The notch of the receiving groove 1121 is located on the side of the shaft column 112, that is, a waist groove; the cross section of the receiving groove 1121 in its extending direction is a rounded rectangular shape, and the length direction of the cross section is perpendicular to the axial direction of the shaft column 112, and the length is less than half of the diameter of the shaft column 112. The bottom of the receiving groove 1121 has a first spring limiting groove 1122, which is a shallow circular groove, and its diameter is smaller than the length and width of the receiving groove 1121. In addition, the side surface of the rotating shaft column 112 close to the rotating shaft end 113 also has two shallow notches, and two driving surfaces 1123 are formed on the side surface of the end, and the two driving surfaces 1123 are both plane and parallel to each other, and are located on both sides of the rotating shaft column 112 in the radial direction. The length direction of the driving surface 1123 is the axial direction of the rotating shaft column 112, and the length of the driving surface 1123 is less than half the length of the rotating shaft column 112.

[0051] The shaft end 113 is generally cylindrical in shape and has a diameter smaller than that of the shaft column 112. Its axial length is also much smaller than that of the shaft column 112. The edge of the outer end of the shaft end 113 is chamfered. The shaft end 113 and the upper end of the shaft column 112 (i.e., the end with the driving surface 1123) are used to cooperate with the installation of the rotating component.

[0052] In addition, a first annular groove 114 is formed between the shaft column 112 and the shaft mounting plate 111, and the circumferential cross section of the first annular groove 114 is approximately trapezoidal. A second annular groove 115 is formed between the shaft column 112 and the shaft end 113, and the circumferential cross section of the second annular groove 115 is also approximately trapezoidal.

[0053] Figure 5 is a three-dimensional diagram of the limiting disk in this embodiment, Figure 6 It is an orthographic projection diagram of the limiting disk in this embodiment.

[0054] like Figure 3 , Figure 5 and Figure 6 As shown, the limiting plate 12 includes a main body cover portion 121 and a plurality of mounting block portions 122 which are integrally formed.

[0055] The main body cover 121 is generally in the shape of a circular cover, and has a through gear hole 1211 in the middle of its top surface. The minimum diameter of the gear hole 1211 is larger than the outer diameter of the shaft column 112. The edge of the gear hole 1211 has a plurality of limiting teeth 1212 arranged in sequence along a circumference, and a limiting groove 1213 is formed between two adjacent limiting teeth 1212, which are used to cooperate with the stop pin 13 to achieve unidirectional rotation. The shape and size of each limiting tooth 1212 are the same and match the shape and size of the outer end of the stop pin 13, and the pitch between two adjacent limiting teeth 1212 is also the same. In this embodiment, a total of eighteen limiting teeth 1212 and corresponding eighteen limiting grooves 1213 are provided.

[0056] Figure 7 yes Figure 6 An enlarged view of the portion within frame A.

[0057] like Figure 7 As shown, in this embodiment, each limiting tooth 1212 is a helical tooth, and all the limiting teeth 1212 are inclined along the same circumferential direction, which is the working rotation direction of the rotating shaft 11 when in use.

[0058] Seen from the axial direction of the limiting disk 12, the cross-sectional shape of the limiting teeth 1212 is roughly a trapezoid with rounded corners, and the short side of the trapezoid faces the center of the limiting disk 12. Seen from the axial direction of the limiting disk 12, the cross-sectional shape of each limiting groove 1213 is roughly a triangle with rounded corners, and the limiting groove 1213 has a first side surface 1213a and a second side surface 1213b and an arc bottom surface 1213c connected between the two side surfaces, and the two side surfaces are parallel to the axial direction of the limiting disk 12, wherein the plane where the first side surface 1213a is located passes through the central axis 12A of the limiting disk 12, and the angle between the second side surface 1213b and the first side surface 1213a is an acute angle, and the angle of the angle is 30° to 45°. In this embodiment, the angle of the angle is about 45°.

[0059] It can be understood that the first side surface 1213a and the second side surface 1213b are also two side surfaces (tooth surfaces) of the limiting tooth 1212. The outer end surface of the limiting tooth 1212 (ie, the end surface facing the central axis of the limiting disk 12) is substantially perpendicular to the radial direction of the limiting disk 12.

[0060] The mounting block 122 further extends outward from the side of the main body cover 121, and its extension direction is the radial direction of the main body cover 121. The mounting block 122 is roughly in the shape of a rectangular block with rounded corners, and each mounting block 122 is provided with a through limiting disk mounting hole 1221, and the through direction of the limiting disk mounting hole 1221 is the axial direction of the limiting disk 12. The connection position between the mounting block 122 and the side of the main body cover 121 is in an arc shape. In addition, in this embodiment, the outer end face 122a of the mounting block 122 is perpendicular to the axial direction of the limiting disk 12, and the outer end face 122a has a smaller curvature. The upper edge of the main body cover 121 also has a plurality of clearance notches 1214, which are respectively located beside each mounting block 122, and the clearance notches 1214 are arc-shaped notches, so that the limiting disk mounting hole 1221 can be set closer to the main body cover 121.

[0061] Figure 8 : is a three-dimensional diagram of the stop pin in this embodiment, Fig. 9 is a side view of the stop pin in this embodiment, Fig.10 It is a cross-sectional view of the stop pin in this embodiment.

[0062] like Figures 8 to 10 As shown, the stop pin 13 includes a stop pin body portion 131 and a matching portion 132 that are integrally formed.

[0063] The main body 131 of the stop pin is in a columnar shape, and its axial cross section has two parallel sides and two arc-shaped sides protruding outwards, so the four side surfaces of the main body 131 of the stop pin are respectively a first plane 131a, a second plane 131b, a first arc surface 131c and a second arc surface 131d, and these four side surfaces are parallel to the axial direction of the stop pin 13. Among them, the distance between the first plane 131a and the second plane 131b (i.e., the thickness of the stop pin 13) is substantially the same as the height of the receiving groove 1121; the maximum distance between the first arc surface 131c and the second arc surface 131d is slightly smaller than the width of the receiving groove 1121.

[0064] A second spring limiting groove 1311 is formed at one axial end of the stop pin body 131 . The second spring limiting groove 1311 is a circular groove with a conical bottom. The diameter of the second spring limiting groove 1311 is substantially the same as that of the first spring limiting groove 1122 .

[0065] The matching portion 132 extends from the other axial end of the stop pin body 131 along the axial direction of the stop pin body 131. The matching portion 132 is generally wedge-shaped, and its four side surfaces are respectively a third plane 132a, a fourth plane 132b, a third arc surface 132c, and a fourth arc surface 132d, which are respectively coplanar with the above four side surfaces of the stop pin body 131. In addition, the matching portion 132 also has an outer end surface 132e, which is a plane and also has two parallel sides and two arc-shaped sides protruding outward. The outer end surface 132e is inclined axially with respect to the stop pin body 131, and the inclination angle relative to the axial direction is 30° to 80°, that is, when in use, the outer end surface 132 is inclined at a radial angle of 30° to 80° relative to the rotating shaft, and is inclined at a circumferential tangent of the gear hole 1211 at a angle of 10° to 60°; in this embodiment, the outer end surface 132 is inclined at an axial angle of 60° relative to the stop pin body 131.

[0066] The outer end surface 132e of the matching portion 132 is used to cooperate with the limiting groove 1213 to realize the free rotation of the rotating shaft 11 along the above-mentioned working rotation direction D1; the third arc surface 132c is used to cooperate with the limiting groove 1213 to prevent the reverse rotation along the working rotation direction D1. For the convenience of description, the outer end surface 132e is recorded as the rotation matching surface 132e, and the third arc surface 132c is recorded as the stop matching surface 132c.

[0067] The stop pin 13 is a metal part, and the metal material itself has wear resistance, or the metal part has wear resistance through a heat treatment process, so that the stop pin 13 is not easy to be obviously worn during long-term use, thereby improving the stability of the reverse limiting mechanism 10 during operation. In this embodiment, the stop pin 13 is an iron part, and the heat treatment process makes it wear-resistant. In an alternative solution, the stop pin 13 can also be made of a polymer wear-resistant and impact-resistant modified material, which has certain wear resistance and can also make the noise during the operation of the reverse limiting mechanism 10 smaller.

[0068] The stop driving member 14 is used to drive the stop pin 13 to move toward the outside of the receiving groove 1121 along its length direction, so as to press the matching portion 132 of the stop pin 13 into one of the limiting grooves 1213. In this embodiment, the stop driving member 14 is a spring.

[0069] After the assembly is completed, the shaft column 112 of the shaft member 11 passes through the gear hole 1211 in the middle of the limiting plate 12, and the shaft member 11 and the limiting plate 12 are coaxially arranged, and in the radial direction of both, the receiving groove 1121 is basically aligned with the gear hole 1211 (i.e., from Figure 3The two are located at the same height in the figure). The main body 131 of the stop pin 13 is embedded in the receiving groove 1121, and there is a certain gap between the two sides and four corners of the main body 131 of the stop pin in the width direction and the inner wall of the receiving groove 1121. The matching part 132 of the stop pin 13 is located outside the receiving groove 1121, and the inclination direction of the rotating matching surface 132e of the matching part 132 is consistent with the inclination direction of the limiting tooth 1212 and the limiting groove 1213. The stop pin 13 can move along its length direction (that is, the radial direction of the rotating shaft 11 and the limiting disk 12). The stop driving member 14 (spring) is arranged in the receiving groove 1121, one end of which is embedded in the first spring limiting groove 1122 of the rotating shaft 11 and abuts against the bottom of the groove, and the other end is embedded in the second spring limiting groove 1311 of the stop pin 13 and abuts against the bottom of the groove.

[0070] Fig.11 It is a cross-sectional view of the reverse limiting mechanism in the present embodiment when it is in use.

[0071] like Fig.11 As shown, under the action of the spring, the stop pin 13 is pushed out toward the outside of the accommodating groove 1121 along its length direction (i.e., the radial direction of the rotating shaft 11 and the limiting disk 12), and the matching portion 132 of the stop pin 13 is pressed toward one of the limiting grooves 1213, and the wedge-shaped outer end of the matching portion 132 is embedded in the limiting groove 1213, with its stop matching surface 132c facing the first side surface 1213a (a straight surface parallel to the radial direction), and the rotating matching surface 132e facing the second side surface 1213b (an inclined surface inclined relative to the radial direction).

[0072] When a positive driving force is applied to the rotating shaft 11 to rotate along the working rotation direction D1, the rotating shaft 11 drives the stop pin 13 to rotate along the D1 direction under the action of the force, and the rotational mating surface 132e of the stop pin 13 contacts the second side surface 1213b, that is, two inclined surfaces inclined relative to the radial direction contact each other, and the component force along the radial direction of the positive driving force on the two inclined surface contact parts overcomes the spring force to push the stop pin 13 into the receiving groove 1121, so that the rotating shaft 11 can rotate along the D1 direction. The spring force of the stop driving member 14 (spring) is designed according to factors such as the inclination angle of the rotational mating surface 132e, the inclination angle of the second side surface 1213b, the length of the stop pin 13, and the magnitude of the positive driving force, so that when the positive driving force is applied, the component force along the radial direction is greater than the spring force.

[0073] When a reverse driving force is applied to the rotating shaft 11 to rotate in a direction opposite to the working rotation direction D1, the rotating shaft 11 attempts to drive the stop pin 13 to rotate in the opposite direction of the D1 direction under the action of this force, and the stop mating surface 132c of the stop pin 13 is in contact with the first side surface 1213a, that is, two surfaces parallel to the radial direction are in contact. Therefore, the above-mentioned reverse driving force will not generate a component force in the radial direction on the contact part of these two surfaces, and therefore the stop pin 13 will not be pushed into the accommodating groove 1121. The stop mating surface 132c abuts against the first side surface 1213a, so that the rotating shaft 11 cannot rotate in the reverse direction.

[0074] The above-mentioned reverse limiting mechanism 10 can be used to install the rotating component on the driving mechanism to form a one-way rotating device. Under the drive of the driving mechanism, the rotating component can only rotate along a predetermined working rotation direction without rotating back.

[0075] A one-way rotation device using the reverse rotation restricting mechanism 10 will be exemplarily shown below.

[0076] Fig.12 is a three-dimensional diagram of the one-way rotating device in this embodiment, Fig.13 It is a cross-sectional view of the one-way rotating device in this embodiment.

[0077] like Fig.12 and Fig.13 As shown, the one-way rotation device 100 includes the above-mentioned reverse rotation limiting mechanism 10 , a rotating member 20 and a driving mechanism 30 .

[0078] The rotating component 20 includes a cam 21 and a cam connecting member 22 .

[0079] The cam 21 includes a special-shaped cam disc 211 and two push posts 212 mounted on the cam disc 211 and protruding outward from one surface of the cam disc 211. The cam connector 220 is an annular member, and its inner ring has a shape that matches the end of the shaft column 112 having the driving surface 1123, that is, the inner ring has two planes that respectively match the two driving surfaces 1123. The cam connector 22 is sleeved on the end of the shaft column 112, and the cam connector 22 is fixedly connected to the cam disc 211, so that the shaft member 11 can drive the cam 21 to rotate.

[0080] The driving mechanism 30 includes a motor 31 and a reducer 32 .

[0081] The output shaft of the motor 31 is connected to the input end of the reducer 32. The reducer 32 is a three-stage gear reducer. The limiting plate 12 is coaxially fixedly mounted on the upper end surface of the reducer 32 by a plurality of fasteners using the limiting plate mounting hole 1221 on the limiting plate 12. The limiting plate 12 is also used as the upper end cover of the reducer 32. The rotating shaft 11 is also used as the output shaft of the reducer 32. The rotating shaft 11 is connected to the third-stage gear 323 through the transmission shaft 321 using the rotating shaft mounting hole 1111 on the rotating shaft 11, so that the motor 310 can drive the rotating shaft 11 to rotate.

[0082] The one-way rotating device 100 is used in a nail gun, which uses a steel spring as an energy storage component. A piston is installed at one end of the steel spring, and a firing pin for firing nails is installed on the piston. Through the rotation of the cam 210, the two push columns 212 thereon push the piston to move toward the direction of the steel spring in turn, thereby compressing the steel spring to store energy. The reverse rotation limiting mechanism 10 can ensure that the cam 210 will not rotate in the opposite direction, thereby ensuring the safety of the use of the nail gun.

[0083] On the other hand, in order to make the nail gun easy to carry and hand-held, there are strict restrictions on the overall size and weight of the nail gun. The overall size of the above-mentioned reversal limiting mechanism 10 is very small and is suitable for such equipment with strict size restrictions.

[0084] The above one-way rotating device is only an example. It can be understood that the reverse limiting mechanism 10 can also be used in conjunction with rotating components and driving mechanisms of other structures in a similar manner.

[0085] Functions and Effects of Embodiment 1

[0086] According to the reverse limiting mechanism provided in this embodiment, it includes a rotating shaft, a limiting disk with a gear hole, a stop pin and a stop driving member. The rotating shaft is inserted into the gear hole of the limiting disk, and a receiving groove is provided on the rotating shaft. The one-way rotation of the component installed on the rotating shaft is achieved by the cooperation of the stop pin arranged in the receiving groove and movable along the radial direction of the rotating shaft and the limiting disk and the plurality of limiting teeth of the gear hole. That is, the stop pin is arranged in the inner ring of the limiting disk, and does not need to occupy the space outside the limiting disk. Moreover, the setting and movement of the stop pin utilize the space inside the rotating shaft, and the spacing between the limiting disk and the rotating shaft can be set very small. Therefore, compared with the traditional ratchet assembly, the overall size of the reverse limiting mechanism of this embodiment is greatly reduced, and it can also effectively realize the function of one-way rotation, and can be applied to small devices with portable needs and handheld operation needs. In addition, the reverse limiting mechanism of this embodiment also has the advantages of simple structure, small number of components, easy assembly and maintenance.

[0087] In the embodiment, the limiting tooth has a first side surface and a second side surface, the first side surface is parallel to the radial direction, and the second side surface is inclined relative to the radial direction. Therefore, when the rotating shaft is subjected to a positive driving force, the two inclined surfaces of the second side surface and the rotational mating surface of the stop pin cooperate to generate a radial component force toward the accommodating groove on the stop pin, and the stop pin can be pressed into the accommodating groove, so that the rotating shaft can rotate forward basically without hindrance; and when the rotating shaft is subjected to a reverse driving force, the two straight surfaces of the first side surface and the stop mating surface of the stop pin cooperate to generate basically no component force in the radial direction, thereby effectively preventing the rotating shaft from rotating in the reverse direction.

[0088] Furthermore, the side surface of the stop pin has two planes, and the shape of the accommodating groove is adapted thereto, thereby preventing the stop shaft from rotating in its axial direction when it moves, thereby maintaining the stability of the reverse limiting mechanism when it is working.

[0089] Furthermore, in the embodiment, the rotating shaft has a rotating shaft mounting disk portion and a rotating shaft column portion, so it can be conveniently connected to the reducer through the rotating shaft mounting disk portion; the limiting disk includes a main body cover portion in the shape of a circular cover and a plurality of mounting block portions, and the gear hole is opened in the middle of the top surface of the main body cover portion, so the limiting disk can also be used as the upper end cover of the reducer, so that the number of components of the unidirectional rotating device is reduced and the assembly is more convenient.

[0090] <Example 2>

[0091] This embodiment provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0092] Compared with the first embodiment, the difference lies in that the structure of the stop pin 13 of this embodiment is different, and accordingly, the structure of the receiving groove 1121 on the rotating shaft 11 is also different.

[0093] In the first embodiment, the cross-sectional shape of the stop pin 13 is axially symmetrical, so there is a possibility of reverse installation, causing the outer end surface 132e (rotational mating surface) to be tilted in the opposite direction to the predetermined direction, and the reverse limiting mechanism 10 cannot work normally. This embodiment is intended to further solve the above problem.

[0094] Fig.14 : is a three-dimensional diagram of the stop pin in this embodiment, Fig.15 It is an orthographic projection diagram of the stop pin in this embodiment.

[0095] like Fig.14 and Fig.15 As shown, the axial cross-section of the stop pin 13 of this embodiment is a circle with a missing part, so the side surface of the stop pin 13 includes an incomplete cylindrical surface 13a and a plane 13b, and the plane 13b is parallel to the axial direction of the stop pin 13.

[0096] Correspondingly, the cross-sectional shape of the accommodating groove 1121 along its extending direction matches the cross-sectional shape of the stop pin 13 , that is, it is also a circle with a portion missing.

[0097] In this embodiment, other structures are the same as those in the first embodiment, and thus will not be described again.

[0098] Functions and Effects of Embodiment 2

[0099] According to the reversal limiting mechanism and the one-way rotation device provided in this embodiment, on the basis of the function and effect of the first embodiment, since the side surface of the stop pin includes an incomplete cylindrical surface and a plane, it no longer has axial symmetry. Therefore, not only can the problem of axial rotation of the stop pin during operation be prevented by the plane, but also a fool-proof mechanism is provided by the structure with only a single plane, which can avoid the problem of installing the stop pin upside down, thereby making the assembly and maintenance of the reversal limiting mechanism more convenient.

[0100] <Example 3>

[0101] This embodiment provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this embodiment, the same symbols are given to the same components as those in the second embodiment and the corresponding descriptions are omitted.

[0102] Compared with the second embodiment, the difference is that the structure of the stop pin 13 of this embodiment is different.

[0103] In the second embodiment, the material of the stop pin 13 is a wear-resistant metal material, or a modified polymer material that is wear-resistant and impact-resistant. However, the wear-resistant metal material will cause relatively large noise during operation due to its high hardness; although the above-mentioned modified material has certain wear resistance, its wear resistance is lower than that of metal, and it is relatively more susceptible to wear, and the stop pin 13 needs to be replaced more frequently. This embodiment is intended to further solve the above problems.

[0104] Fig.16 It is a three-dimensional view of the stop pin in this embodiment.

[0105] like Fig.16 As shown, the stop pin 13 of this embodiment also includes a noise reduction layer 133. The noise reduction layer 133 is a thin sheet-like piece with a certain thickness and is arranged on the outer end surface 132e. The noise reduction layer 133 is made of the above-mentioned polymer wear-resistant and impact-resistant modified material and is formed on the outer end surface 132e through injection molding or wrapping technology. It can cover substantially the entire outer end surface 132e, or cover most of the area in the middle of the outer end surface 132e.

[0106] In this embodiment, the outer surface 133a of the noise reduction layer 133 is a rotational mating surface.

[0107] The stop pin body portion 131 and the matching portion 132 of the stop pin 13 are made of wear-resistant metal material in one piece, that is, a metal part.

[0108] Fig.17 It is an orthographic projection diagram of the reverse limiting mechanism in use in this embodiment.

[0109] like Fig.17 As shown, when a positive driving force is applied to the rotating shaft 11 in the direction D1, the outer surface 133a (rotational mating surface) of the noise reduction layer 133 of the stop pin 13 contacts the second side surface 1213b (inclined surface), thereby reducing noise during operation.

[0110] When a reverse driving force is applied to the shaft 11 to rotate in the opposite direction to the D1 direction, the third arc surface 132c (stop mating surface) of the shaft 11 contacts the first side surface 1213a (straight surface), that is, the metal part abuts against the limiting tooth 121.

[0111] In this embodiment, other structures are the same as those in the second embodiment, so they will not be described again.

[0112] In addition, the noise reduction layer 133 of this embodiment can also be provided on the basis of the structure of the stop pin 13 of the first embodiment.

[0113] Functions and Effects of Embodiment 3

[0114] According to the reversal limiting mechanism and the one-way rotation device provided in this embodiment, on the basis of the function and effect of the first embodiment, since the stop pin adopts the form of a main metal part and a modified material layer in combination, the modified material layer at the outer end can make the noise during operation smaller, and the main metal part can achieve good wear resistance, so that the reversal limiting mechanism has better stability during long-term use, and can also reduce the frequency of disassembly and maintenance of the mechanism and replacement of parts, so that the user experience is better.

[0115] <Modification 1>

[0116] This variation provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this variation, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0117] Compared with the first embodiment, the difference lies in that in the reverse rotation limiting mechanism 10 of this variation, the structure of the gear hole 1211 of the limiting plate 12 is different.

[0118] Fig.18 It is an orthographic projection diagram of the limiting disk in this variation.

[0119] like Fig.18As shown, in the gear hole 1211 of the limiting disk 12 of this modified example, the first side surface 1213a and the second side surface 1213b are both inclined relative to the radial direction of the limiting disk 12, and the inclination directions of the two are different. In this modified example, based on the radial direction of the bottom center line of a limiting groove 1213, the inclination angle of the first side surface 1213a of the limiting groove 1213 is 5° to 20°, and the inclination angle of the second side surface 1213b is 30° to 45°, that is, the inclination angle of the first side surface 1213a is smaller than the inclination angle of the second side surface 1213b.

[0120] The spring force of the stop drive member (spring) 14 is designed and adjusted according to the inclination angles of the first side surface 1213a and the second side surface 1213b, so that when a positive driving force is given to the rotating shaft member 11 to rotate along the direction D1, the radial component of the positive driving force is sufficient to overcome the spring force; and when a reverse driving force is given to the rotating shaft member 11 in the opposite direction of the direction D1, the radial component of the reverse driving force is much smaller than the spring force, thereby being able to achieve the same effect as in Example 1.

[0121] In this variation, other structures are the same as those in the first embodiment, and thus will not be described again.

[0122] In addition, in this variation, the stop pin 13 structure of the second or third embodiment may also be adopted.

[0123] <Modification 2>

[0124] This variation provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0125] Compared with the first embodiment, the difference lies in that in the reverse rotation limiting mechanism 10 of this variation, the structure of the gear hole 1211 of the limiting plate 12 is different.

[0126] Fig.19 It is an orthographic projection diagram of the limiting disk in this variation.

[0127] like Fig.19As shown, in the gear hole 1211 of the limiting disk 12 of this modified example, the cross-section of the limiting groove 1213 in the axial direction of the limiting disk 12 is roughly trapezoidal, and the bottom surface 1213c is roughly a plane parallel to the radial direction of the limiting disk 12. The first side surface 1213a and the second side surface 1213b are both inclined relative to the radial direction of the limiting disk 12, and the inclination directions of the two are the same. In this modified example, based on the radial direction of the boundary line between the bottom surface 1213c and the second side surface 1213b of a limiting groove 1213, the inclination angle of the first side surface 1213a of the limiting groove 1213 is 5° to 20°, and the inclination angle of the second side surface 1213b is 30° to 45°, that is, the inclination angle of the first side surface 1213a is smaller than the inclination angle of the second side surface 1213b.

[0128] When the positive driving force is applied, the situation is the same as that in the second embodiment and will not be described in detail.

[0129] When a reverse driving force is applied, the stop mating surface 132c parallel to the radial direction contacts the second side surface 1213b. Depending on the contact situation, no force component will be generated or a force component will be generated radially outward, so the stop pin 13 will not be pushed into the receiving groove 1121.

[0130] In this variation, other structures are the same as those in the first embodiment, and thus will not be described again.

[0131] In addition, in this variation, the stop pin 13 structure of the second or third embodiment may also be adopted.

[0132] <Variation 3>

[0133] This variation provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0134] Compared with the first embodiment, the difference lies in that in the reverse rotation limiting mechanism 10 of this embodiment, the structure of the gear hole 1211 of the limiting disk 12 is different.

[0135] Fig. 20 It is an orthographic projection diagram of the limiting disk in this variation.

[0136] like Fig. 20 As shown, in the gear hole 1211 of the limiting disk 12 of this modified example, the limiting groove 1213 is an isosceles trapezoidal groove, and the first side surface 1213a and the second side surface 1213b are both parallel to the radial direction of the limiting disk 12 and perpendicular to the circumferential direction of the gear hole 1211, that is, they are both straight surfaces.

[0137] When a positive driving force is applied to the rotating shaft member 11 to rotate in the direction D1, since the rotating mating surface 132e of the stop pin 13 is an inclined surface, the rotating mating surface 132e contacts the first side surface 1213a, and a component force radially toward the receiving groove 1121 is still generated. The spring of the stop driving member 14 (spring) is designed and adjusted according to the angle of the first side surface 1213a, the inclination angle of the rotating mating surface 132e, etc. of this modified example, so that the component force is greater than the spring force, thereby being able to push the stop pin 13 toward the receiving groove 1121.

[0138] When a reverse driving force is applied to the rotating shaft 11 in the direction opposite to the direction D1, the situation is the same as that in the first embodiment and will not be described in detail.

[0139] In this variation, other structures are the same as those in the first embodiment, and thus will not be described again.

[0140] In addition, in this variation, the stop pin 13 structure of the second or third embodiment may also be adopted.

[0141] <Variation 4>

[0142] This variation provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0143] Compared with the first embodiment, the difference lies in that in the reverse rotation limiting mechanism 10 of this variation, the structure of the anti-directional driving member 14 is different.

[0144] Fig.21 It is a three-dimensional view of the stop driving member in this modified example.

[0145] like Fig.21 As shown, in this modified example, the stop driving member 14 is a bent metal sheet strip having one or more bent portions 141. In this embodiment, the stop driving member 14 has one bent portion 141, and is V-shaped as a whole. The stop driving member 14 is also arranged in the receiving groove 1121, one end of which abuts against the bottom of the receiving groove 1121, and the other end abuts against one end of the stop pin 13 located in the receiving groove 1121. The bottom of the receiving groove 1121 and the end surface of the end of the stop pin 13 can also be modified according to the structure of the stop driving member 14, so that the stop driving member 14 can be installed therein more stably.

[0146] When the stop pin 13 is subjected to a force radially toward the accommodating groove 1121, the stop driving member 14 deforms (i.e., the angle of the V-shape becomes smaller) to cause the stop pin 13 to move toward the accommodating groove 1121; when the stop pin 13 is no longer subjected to the above force, the stop driving member 14 provides a force to push the stop pin 13 out by deforming and resetting.

[0147] In this variation, other structures are the same as those in the first embodiment, and thus will not be described again.

[0148] In addition, in this variation, the stop pin 13 structure of the second or third embodiment may also be adopted, or the limiting disk 12 structure of any one of the variations one to three may also be adopted.

[0149] <Variation 5>

[0150] This variation provides a reverse rotation limiting mechanism and a corresponding one-way rotation device. In this variation, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0151] Compared with the first embodiment, the difference is that in the reverse rotation limiting mechanism 10 of this variation, the structure of the anti-rotation driving member is different.

[0152] In this modified example, the stop driving member is an elastic body in the shape of a square column or a cylinder, and can be a rubber or rubber-plastic part. The stop driving member is also arranged in the receiving groove 1121, one end of which abuts against the bottom of the receiving groove 1121, and the other end abuts against one end of the stop pin 13 located in the receiving groove 1121. When the stop pin 13 is subjected to a force radially toward the receiving groove 1121, the stop driving member moves the stop pin 13 toward the receiving groove 1121 through deformation and extrusion; when the stop pin 13 is no longer subjected to the above force, the stop driving member provides a force to push the stop pin 13 out through deformation and reset.

[0153] In an alternative solution, the stop driving member may also have a cross-sectional shape that matches the cross-sectional shape of the receiving groove 1121 .

[0154] In this variation, other structures are the same as those in the first embodiment, and thus will not be described again.

[0155] In addition, in this variation, the stop pin 13 structure of the second or third embodiment may also be adopted, or the limiting disk 12 structure of any one of the variations one to three may also be adopted.

[0156] The above embodiments and variations are only used to illustrate the specific implementation methods of the utility model, and the utility model is not limited to the description scope of the above embodiments and variations. The technicians in this industry should understand that the utility model is not limited by the above embodiments and variations. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

[0157] In the above embodiment, the stop pin is roughly cylindrical with one or two side planes. In an alternative embodiment, the stop pin may also be in the shape of a square column or a special-shaped column, such as a cylinder with a boss, and the receiving groove has a groove corresponding to the boss. The structural design of the stop pin and the receiving groove only needs to enable the stop pin to move radially in the receiving groove and not rotate axially.

[0158] In the above embodiment, the one-way rotating device is used in a nail gun, the driving mechanism is a motor and a reducer, and the rotating component is a cam. In alternative solutions, the one-way rotating device can also be used in other devices, and the driving mechanism can also be other structures as long as it can drive the rotating shaft to rotate; the rotating component can also be other structures as long as it can be installed on the rotating shaft.

Claims

1. A reverse rotation limiting mechanism, used to make a component mounted on the reverse rotation limiting mechanism rotate in one direction, characterized in that: include: A rotating shaft, used to drive the components to rotate, and having a receiving groove extending along its radial direction; The limiting plate has a gear hole, the gear hole has a plurality of limiting teeth, the rotating shaft is passed through the gear hole and the accommodating groove faces the limiting teeth; A stop pin is embedded in the receiving groove so as to be movable along the radial direction, one end of which is a matching portion located outside the receiving groove and is used to match with the limiting tooth to realize the unidirectional rotation of the rotating shaft; as well as a stop driving member, used for driving the stop pin to move outside the receiving groove, Wherein, the matching portion has: a rotating mating surface, which is inclined relative to the radial direction and is used to abut against the limiting tooth when the rotating shaft is subjected to a positive driving force, and press the stop pin toward the receiving groove, so that the rotating shaft can rotate in the positive direction; and The stop mating surface is parallel to the radial direction and is used to abut against the limiting tooth when the rotating shaft is subjected to a reverse driving force to prevent the rotating shaft from rotating in the reverse direction.

2. The reverse rotation limiting mechanism according to claim 1, characterized in that: in, A limiting groove is formed between two adjacent limiting teeth. The limiting groove has a first side surface and a second side surface. The first side surface and the second side surface are both perpendicular to the circumference of the gear hole. The first side surface is used to abut against the stop mating surface when the rotating shaft is subjected to the reverse driving force to prevent the reverse rotation. The second side surface is used to abut against the rotating mating surface when the rotating shaft is subjected to the positive driving force, so that the stop pin is subjected to the component force of the positive driving force along the radial direction toward the receiving groove, thereby pressing the stop pin toward the receiving groove.

3. The reverse rotation limiting mechanism according to claim 2, characterized in that: in, The first side surface is parallel to the radial direction, The inclination angle of the second side surface relative to the corresponding first side surface is 30° to 45°, The inclination angle of the rotating fitting surface relative to the radial direction is 30° to 80°.

4. The reverse rotation limiting mechanism according to claim 2, characterized in that: in, The first side surface and the second side surface are both inclined relative to the radial direction, With respect to a first radial direction of the rotating shaft member passing through a junction of the first side surface and the second side surface, the first side surface and the second side surface are inclined toward two sides respectively. The inclination angle of the first side surface relative to the first radial direction is 5° to 20°, The inclination angle of the second side surface relative to the first radial direction is 30° to 45°, The inclination angle of the rotating fitting surface relative to the radial direction is 30° to 80°.

5. The reverse rotation limiting mechanism according to claim 2, characterized in that: in, The first side surface and the second side surface are both inclined relative to the radial direction, With respect to a first radial direction of the rotating shaft member passing through a boundary between the first side surface and the second side surface, the first side surface and the second side surface are inclined toward the same side. The inclination angle of the first side surface relative to the first radial direction is 5° to 20°, The inclination angle of the second side surface relative to the first radial direction is 30° to 45°, The inclination angle of the rotating fitting surface relative to the radial direction is 30° to 80°.

6. The reverse rotation limiting mechanism according to claim 2, characterized in that: in, The first side surface and the second side surface are both parallel to the radial direction, The inclination angle of the rotating fitting surface relative to the radial direction is 30° to 80°.

7. The reverse rotation limiting mechanism according to claim 1, characterized in that: in, The stop pin is columnar, and its side surface includes a cylindrical surface and a flat surface, and the cylindrical surface is the stop mating surface. The cross-sectional shape of the accommodating groove matches the stop pin.

8. The reverse rotation limiting mechanism according to claim 1, Features: Wherein, the stop pin comprises: A metal piece, made of a wear-resistant metal material, in a columnar shape, one end of which has a plane inclined relative to its axial direction, and one side surface of the metal piece is the stop mating surface; and The noise reduction layer is made of a modified material that is wear-resistant and impact-resistant and is arranged on the plane of the metal part. The outer surface of the noise reduction layer is the rotating mating surface.

9. The reverse rotation limiting mechanism according to claim 1, characterized in that: in, The stop driving member is an elastic member, which is arranged in the receiving groove, one end of which abuts against the groove bottom of the receiving groove, and the other end abuts against the stop pin. The elastic member is any one of a spring, a metal strip with one or more bending parts, a columnar rubber part, and a columnar rubber-plastic part.

10. A one-way rotating device, characterized in that: include: A reverse rotation limiting mechanism, comprising a rotating shaft member; as well as A rotating component is mounted on the rotating shaft of the reverse limiting mechanism, and the reverse limiting mechanism allows the rotating component to rotate in one direction. Wherein, the reverse limiting mechanism is the reverse limiting mechanism according to any one of claims 1 to 9.

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