Reciprocating mechanism and reciprocating tool

Abstract

This application relates to a reciprocating motion mechanism and a reciprocating tool. The reciprocating motion mechanism includes an input component and an output component, which are connected in a transmission manner. The input component is configured to drive the output component to reciprocate through unidirectional rotation. By driving the output component to reciprocate through unidirectional rotation of the input component, the output shaft of the motor connected to the input component only needs to rotate in one direction. Therefore, the torque borne by the output shaft of the motor during rotation is relatively stable, which helps to improve the stability of motor operation.

Description

Technical Field

[0001] This application relates to the field of reciprocating tool technology, and more particularly to a reciprocating motion mechanism and a reciprocating tool. Background Technology

[0002] Reciprocating motion mechanisms are currently used in many applications. For example, they are used in deep well acceleration tools to apply impact loads to the hammer anvil through the linear up-and-down motion of the impact drill. They are also used in shock absorbers to achieve vehicle body lifting and lowering.

[0003] In related technologies, the reciprocating motion of a reciprocating mechanism is usually controlled by the forward and reverse rotation of a motor, which converts the rotational motion of the motor into linear motion. However, when the motor switches between forward and reverse rotation, the sudden change in rotation direction causes a change in the torque on the motor's output shaft. During the reciprocating motion, the torque on the motor's output shaft changes frequently, leading to a decrease in the motor's operational stability. Summary of the Invention

[0004] This application provides a reciprocating motion mechanism and a reciprocating tool, which helps to improve the operational stability of the motor and at least partially solves the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a reciprocating motion mechanism is provided, comprising an input component and an output component, wherein the input component is drively connected to the output component, and the input component is configured to drive the output component to reciprocate by unidirectional rotation.

[0006] Optionally, the reciprocating motion mechanism further includes a first transmission mechanism and a second transmission mechanism, both of which are connected to the output component. The input component is configured to alternately connect to the first transmission mechanism and the second transmission mechanism during unidirectional rotation to drive the output component to reciprocate.

[0007] Optionally, the input element is an incomplete gear, the first transmission mechanism includes a first driven gear, the second transmission mechanism includes a second driven gear, and the input element is configured to alternately mesh with the first driven gear and the second driven gear during unidirectional rotation to drive the first transmission mechanism or the second transmission mechanism.

[0008] Optionally, the number of teeth of the input element is less than the number of teeth of the first driven gear; and / or, the number of teeth of the input element is less than the number of teeth of the second driven gear.

[0009] Optionally, the first driven gear and the second driven gear are coaxially arranged.

[0010] Optionally, the input component is a bevel gear, and the rotation axis of the bevel gear intersects with the rotation axis of the first driven gear.

[0011] Optionally, the reciprocating motion mechanism further includes an auxiliary bevel gear, which is spaced apart from the input element and configured to mesh synchronously with the first driven gear or the second driven gear in sync with the input element.

[0012] Optionally, the auxiliary bevel gear is coaxially arranged with the input component.

[0013] Optionally, the first transmission mechanism further includes a first cam, which is connected to and coaxially arranged with the first driven gear. The inner circumferential surface of the first cam has a first helical groove extending helically along the axial direction of the first cam. The first transmission mechanism is connected to the output component via the first helical groove; and / or

[0014] The second transmission mechanism further includes a second cam, which is connected to and coaxially arranged with the second driven gear. The outer circumferential surface of the second cam has a second helical groove with the same helical direction as the first helical groove. The second helical groove extends helically along the axial direction of the second cam. The second transmission mechanism is connected to the output component via the second helical groove; and / or

[0015] The first cam is sleeved on the second cam, and a portion of the output component is embedded in the first helical groove and a portion of the output component is embedded in the second helical groove.

[0016] Optionally, the output component is fitted onto the second cam and located between the first cam and the second cam.

[0017] Optionally, the first cam is a cylindrical cam; and / or, the second cam is a cylindrical cam.

[0018] Optionally, the reciprocating motion mechanism further includes a mounting base, the mounting base including a housing, the input component being rotatably mounted on the housing, and both the first transmission mechanism and the second transmission mechanism being rotatably mounted on the housing and disposed within the housing; the housing is provided with a guide hole, and the output component passes through the guide hole.

[0019] Optionally, the reciprocating motion mechanism further includes a mounting base, the mounting base including a housing, the input component being rotatably mounted on the housing; the housing is provided with a guide hole, and the output component passes through the guide hole.

[0020] According to a second aspect of this application, a reciprocating tool is also provided, the reciprocating tool including the reciprocating motion mechanism provided in any of the first aspects.

[0021] In the reciprocating motion mechanism of this application embodiment, the output component is driven to reciprocate by the unidirectional rotation of the input component, so that the output shaft of the motor connected to the input component only needs to rotate in one direction. As a result, the torque borne by the output shaft of the motor during rotation is relatively stable, which helps to improve the stability of motor operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0024] Figure 1 This is a schematic diagram of the overall structure of the reciprocating motion mechanism provided in the embodiments of this application;

[0025] Figure 2 This is an exploded view of the reciprocating motion mechanism provided in the embodiments of this application;

[0026] Figure 3 This is an internal sectional view of the reciprocating motion mechanism provided in the embodiments of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the input component and the first driven gear and the second driven gear alternately meshing, as provided in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the second transmission mechanism provided in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the first transmission mechanism provided in the embodiments of this application;

[0030] Figure 7 This is an internal sectional view of the first transmission mechanism provided in the embodiments of this application;

[0031] Figure 8 This is a schematic diagram of the structure of the output component provided in the embodiments of this application;

[0032] Figure 9 This is an internal sectional view of the output component provided in the embodiments of this application;

[0033] Figure 10 This is a schematic diagram of the end cap structure provided in an embodiment of this application;

[0034] Figure 11 This is a schematic diagram of the structure of the input component, which is a spur gear, provided in the embodiments of this application.

[0035] Figure 12 This is a schematic diagram of another embodiment of the first transmission mechanism and the second transmission mechanism in the reciprocating motion mechanism provided in this application;

[0036] Figure 13 This is a schematic diagram of another embodiment of the first transmission mechanism and the second transmission mechanism in the reciprocating motion mechanism provided in this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10. Reciprocating motion mechanism;

[0039] 1. Input components;

[0040] 2. Output component; 21. First sliding shaft; 22. Second sliding shaft; 23. Second inner hole; 24. Connecting rod;

[0041] 3. First transmission mechanism; 31. First driven gear; 32. First cam; 321. First helical groove; 33. Connecting shaft; 34. First inner hole; 35. Third driven gear; 36. First rack;

[0042] 4. Second transmission mechanism; 41. Second driven gear; 42. Second cam; 421. Second helical groove; 45. Fourth driven gear; 46. Second rack;

[0043] 5. Auxiliary bevel gear;

[0044] 6. Outer shell; 61. Upper shell; 62. Lower shell; 621. Slide groove; 63. End cap; 631. Guide hole;

[0045] 7. Third cam; 71. Third spiral groove. Detailed Implementation

[0046] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The terms "comprising" and "having," and any variations thereof, in the specification of this application, are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0051] In the description of the embodiments of this application, the technical terms "velocity direction", "up" or "down" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "set", "connected", "connected", and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0053] The technical solution provided in this application is applicable to shock absorbers and other reciprocating motion tools.

[0054] Reference Figures 1 to 10 This application provides a reciprocating motion mechanism 10, which includes an input component 1 and an output component 2. The output component 2 is connected to the input component 1 in a transmission manner. The input component 1 is configured to drive the output component 2 to reciprocate through unidirectional rotation.

[0055] Input component 1 is used to connect to the output shaft of the motor. Output component 2 is the part that interacts indirectly or directly with the external working object of the reciprocating motion mechanism. The output component can convert the motion provided by the input component into actual working actions, such as pushing and pulling, drilling up and down, lifting, etc. For example, when the reciprocating motion mechanism 10 is applied to a shock absorber, output component 2 can be used to connect to the vehicle's suspension structure to control the vehicle's lifting and lowering.

[0056] In this embodiment, the unidirectional rotation of the input component 1 drives the reciprocating motion of the output component 2, so that the output shaft of the motor connected to the input component 1 only needs to rotate in one direction. As a result, the torque borne by the output shaft of the motor during rotation is relatively stable, which helps to improve the stability of motor operation.

[0057] In some embodiments, the reciprocating motion mechanism 10 further includes a mounting base, which can be understood as the mounting foundation for the input element 1, the output element 2, and the associated transmission mechanism, so as to place the reciprocating motion mechanism 10. It should be understood that in other embodiments, the reciprocating motion mechanism 10 may not include a mounting base. For example, the input element 1, the output element 2, and the associated transmission mechanism may be directly mounted on the site of use, using a bracket in the site of use for placement.

[0058] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the mounting base includes a housing 6, which may be cylindrical in shape. The housing 6 includes an upper housing 61, a lower housing 62, and an end cap 63. The lower housing 62 has a cylindrical structure with open upper and lower ends. The upper housing 61 covers the upper end of the lower housing 62, and the end cap 63 covers the lower end of the lower housing 62. The input component 1 is mounted to the upper housing 61 via a bearing. The end cap 63 is also provided with a guide hole 631, through which the output component 2 passes, and one end of the output component 2 extends out of the end cap 63.

[0059] Input component 1 and output component 2 are connected by a transmission mechanism, which converts the rotational motion of input component 1 into linear motion, thereby enabling output component 2 to reciprocate along a straight line. The transmission mechanism can be a gear mechanism, a cam mechanism, or a mechanism that combines gears and cams.

[0060] The transmission mechanism between input component 1 and output component 2 is described in detail below.

[0061] In some embodiments, the input component 1 and the output component 2 include two sets of transmission mechanisms, namely a first transmission mechanism 3 and a second transmission mechanism 4. Both the first transmission mechanism 3 and the second transmission mechanism 4 are rotatably mounted on and housed within the housing. Both the first transmission mechanism 3 and the second transmission mechanism 4 are drively connected to the output component 2. The input component 1 is configured to alternately drive the first transmission mechanism 3 and the second transmission mechanism 4 during unidirectional rotation to drive the output component 2 in reciprocating motion.

[0062] Understandably, input component 1 drives output component 2 to move in a straight line in the forward direction through first transmission mechanism 3, and input component 1 drives output component 2 to move in a straight line in the reverse direction through second transmission mechanism 4. Input component 1 is alternately connected to first transmission mechanism 3 and second transmission mechanism 4 to realize reciprocating motion of output component 2.

[0063] In this embodiment, the input component 1 is alternately connected to the first transmission mechanism 3 and the second transmission mechanism 4 during unidirectional rotation, thereby driving the output component 2 to reciprocate. This configuration helps to improve transmission stability and accuracy.

[0064] Reference Figure 4 and Figure 11 In some embodiments, the input element 1 is an incomplete gear; in other words, the teeth of the input element 1 are only distributed on a portion of the circumference, with the remaining portion being a toothless area. Compared to a complete gear, an incomplete gear occupies less space.

[0065] Accordingly, the first transmission mechanism 3 includes a first driven gear 31, and the second transmission mechanism 4 includes a second driven gear 41. During the unidirectional rotation, the incomplete gear alternately meshes with the first driven gear 31 and the second driven gear 41 to alternately drive the first transmission mechanism 3 or the second transmission mechanism 4 to move, thereby realizing the reciprocating motion of the output component 2.

[0066] During the unidirectional rotation, the input component 1 alternately meshes with the first driven gear 31 and the second driven gear 41. This means that during the meshing process of the input component 1 with the first driven gear 31, the teeth of the input component 1 disengage from the second driven gear 41. Correspondingly, during the meshing process of the input component 1 with the second driven gear 41, the teeth of the input component 1 disengage from the first driven gear 31.

[0067] In some embodiments, the number of teeth of the input element 1 is less than the number of teeth of the first driven gear 31.

[0068] In some embodiments, the number of teeth of the input element 1 is less than the number of teeth of the second driven gear 41.

[0069] The input component 1 has fewer teeth than the first driven gear 31 and / or the second driven gear 41, enabling speed reduction and torque increase, thus allowing it to withstand greater loads. Specifically, the input component is an incomplete gear; for every revolution of the incomplete gear, the first driven gear 31 and / or the second driven gear 41 rotates by a relatively small angle, thereby reducing their rotational speed. Simultaneously, based on the principle of constant power, the torque increases as the rotational speed decreases, making it suitable for tools requiring higher torque to drive heavy loads or overcome significant resistance.

[0070] Reference Figure 3 , Figure 4 , Figure 12 and Figure 13 In some embodiments, the first driven gear 31 and the second driven gear 41 are coaxially arranged. This arrangement, with the first driven gear 31 and the second driven gear 41 aligned on the same axis, saves a significant amount of radial space, making the reciprocating motion mechanism 10 more compact and facilitating the creation of a smaller reciprocating motion mechanism 10, thus making it suitable for applications with limited space.

[0071] For example, such as Figure 3 and Figure 4 As shown, the second driven gear 41 is arranged vertically above the first driven gear 31, and the input component 1 is located between the first driven gear 31 and the second driven gear 41.

[0072] It should be noted that in some embodiments, the first driven gear 31 and the second driven gear 41 may also be arranged on different axes. For example, in some embodiments, the output member 2 is moved by a moving mechanism so that the output member 2 is alternately connected to the first transmission mechanism 3 and the second transmission mechanism. In other words, when the input member 1 is engaged with the first driven gear 31, the output member 2 is engaged with the first transmission mechanism 3; when the input member 1 is engaged with the second driven gear 41, the output member 2 is engaged with the second transmission mechanism 4.

[0073] Reference Figure 3 , Figure 12 and Figure 13 In some embodiments, the input element 1 is a bevel gear, and correspondingly, the first driven gear 31 and the second driven gear 41 are also bevel gears, and the rotation axis P2 of the input element 1 intersects with the rotation axis P1 of the first driven gear 31.

[0074] Optionally, the input component 1 is a bevel gear, and the rotation axis P2 of the input component 1 is perpendicular to the rotation axis P1 of the first driven gear 31. For example, as shown... Figure 3 As shown, input component 1 changes the power transmission in the left-right direction to the power transmission in the up-down direction, so that output component 2 moves back and forth in the up-down direction.

[0075] Reference Figure 11 In some embodiments of the input element 1, the input element 1 can be a spur gear, the first driven gear 31 is a gear ring with internal teeth, and the first driven gear 31 and the second driven gear 41 have external teeth. The first driven gear 31 and the second driven gear 41 are coaxially arranged, and the input element 1 is located between the first driven gear 31 and the second driven gear 41. The input element 1 is configured to alternately mesh with the first driven gear 31 and the second driven gear 41 during unidirectional rotation. The rotation axis P2 of the input element 1 is parallel to the first driven gear 31 and the second driven gear 41. The reciprocating motion mechanism 10 of this embodiment is advantageous in saving radial space of the first driven gear 31, and the reciprocating motion mechanism is suitable for situations where there is a large axial space of the first driven gear 31.

[0076] Compared to spur gears, in the above embodiment, the input component 1 is a bevel gear, which can change the transmission direction and realize power transmission between intersecting shafts, which is beneficial to optimizing the layout of the reciprocating motion mechanism 10. In addition, bevel gears have higher load-bearing capacity and a larger tooth surface contact area, which can withstand larger radial and axial forces, making the reciprocating motion mechanism 10 suitable for transmitting high power and high torque.

[0077] Reference Figure 3 In some embodiments, the reciprocating motion mechanism 10 further includes an auxiliary bevel gear 5, which is spaced apart from the input member 1 and is configured to mesh with the first driven gear 31 or the second driven gear 41 synchronously with the input member 1.

[0078] The auxiliary bevel gear 5 cooperates with the input component 1. The bevel gear 5 can share part of the load with the input component 1, reducing wear and deformation of the input component 1, thereby improving the transmission accuracy and stability of the entire transmission mechanism. At the same time, the auxiliary bevel gear 5 can make the transmission process smoother, reduce vibration and impact, and improve the working reliability and service life of the reciprocating motion mechanism 10.

[0079] The structure of the auxiliary bevel gear 5 can be referred to the structure of the input component 1, and will not be described in detail here for the sake of brevity.

[0080] The auxiliary bevel gear 5 and the input component 1 can be spaced apart around the rotation axis P1 of the first driven gear 31, or even symmetrically arranged with respect to the rotation axis P1 of the first driven gear 31.

[0081] Optionally, refer to Figure 3 The auxiliary bevel gear 5 is coaxially arranged with the input component 1, and the auxiliary bevel gear 5 and the input component 1 are arranged symmetrically from left to right. The first driven gear 31 and the second driven gear 41 are arranged vertically and located between the auxiliary bevel gear 5 and the input component 1. This arrangement can further balance the force on the input component 1 and extend the service life of the reciprocating motion mechanism 10.

[0082] Optionally, the number of teeth of the auxiliary bevel gear 5 is the same as the number of teeth of the input component 1, thereby greatly improving the meshing smoothness of the transmission mechanism.

[0083] Reference Figure 3 and Figure 6 In some embodiments, the first transmission mechanism 3 is in the form of a cam and gear engagement. The first transmission mechanism 3 also includes a first cam 32. The first cam 32 is connected to the first driven gear 31 via a connecting shaft 33 and is coaxially arranged with the first driven gear 31. The outer diameter of the connecting shaft 33 may be smaller than the outer diameter of the first cam 32, so that there is a necked section between the first driven gear 31 and the first cam 32, thereby reducing space occupation.

[0084] The first cam 32 is mounted to the lower housing 62 at both its upper and lower ends via bearings. The first cam 32 is an inner circumferential cam, and its inner circumferential surface is provided with a first helical groove 321. The first helical groove 321 extends helically along the axial direction of the first cam 32. The first transmission mechanism 3 is connected to the output component 2 via the first helical groove 321. This configuration allows the rotational motion of the first driven gear 31 to be converted into linear motion, and the first driven gear 31 can, at a relatively low speed, enable the output component 2 to have a large output displacement via the first cam 32.

[0085] Reference Figure 3 and Figure 5 In some embodiments, the second transmission mechanism 4 further includes a second cam 42, which is connected to and coaxially arranged with the second driven gear 41. The first cam 32 also serves as the mounting shaft for the second driven gear 41.

[0086] The upper end of the second cam 42 is mounted to the upper housing 61 via a bearing, and the lower end of the first cam 32 is mounted to the lower housing 62 via a bearing. The second cam 42 is an outer peripheral cam, and its outer peripheral surface is provided with a second helical groove 421 with the same helical direction as the first helical groove 321. The second helical groove 421 extends helically along the axial direction of the second cam 42, and the second transmission mechanism 4 is connected to the output component 2 via the second helical groove 421. With this configuration, the rotational motion of the second driven gear 41 can be converted into linear motion, and the second driven gear 41 can cause the output component 2 to have a large output displacement at a relatively small speed through the second cam 42.

[0087] Reference Figure 3 and Figure 6 Specifically, the first cam 32 has a first inner hole 34, and a first helical groove 321 is disposed on the hole wall of the first inner hole 34. The second cam 42 passes through the first inner hole 34 so that the first cam 32 is sleeved on the second cam 42.

[0088] The output component 2 is provided with a first sliding shaft 21 and a second sliding shaft 22. A portion of the first sliding shaft 21 extends into the first spiral groove 321, and the first sliding shaft 21 is slidably engaged with the first spiral groove 321. A portion of the second sliding shaft 22 extends into the second spiral groove 421, and the second sliding shaft 22 is slidably engaged with the second spiral groove 421.

[0089] In this embodiment, by fitting the first cam 32 onto the second cam 42, the first cam 32 and the second cam 42 can share a portion of the space, making the structure of the first transmission mechanism 3 and the second transmission mechanism 4 more compact and facilitating the creation of a smaller reciprocating motion mechanism 10. Furthermore, the second cam 42 can guide the first cam 32, reducing the risk of reciprocating motion failure of the output component 2 due to mismatch in position between the first helical groove 321 and the second helical groove 421 caused by the rotational tilt of the second cam 42.

[0090] In some embodiments, the output member 2 is provided with a second inner hole 23, and a second cam 42 passes through the second inner hole 23, so that the output member 2 is sleeved on the second cam 42 and located between the outer peripheral surface of the first cam 32 and the inner peripheral surface of the second cam 42. The second cam 42 can guide the output member 2. Furthermore, by placing the output member 2 between the second cam 42 and the first cam 32, the space between the inner peripheral surface of the first cam 32 and the outer peripheral surface of the second cam 42 can be utilized, thereby improving space utilization.

[0091] In some embodiments, the first cam 32 is a cylindrical cam, that is, the first cam 32 is cylindrical. This configuration can reduce the manufacturing difficulty of the first cam 32.

[0092] In some embodiments, the second cam 42 is a cylindrical cam, that is, the second cam 42 is cylindrical. This configuration can reduce the difficulty of manufacturing the second cam 42.

[0093] Reference Figure 12 In other embodiments of the first transmission mechanism 3 and the second transmission mechanism 4, the reciprocating motion mechanism 10 includes a first driven gear 31, a second driven gear 41, and a third cam 7, both of which are connected to the third cam 7. The first driven gear 31, the second driven gear 41, and the third cam 7 are coaxially arranged. The upper end of the third cam 7 is mounted to the upper housing 61 via a bearing, and the lower end is mounted to the end cover 63 via a bearing. The outer circumferential surface of the third cam 7 is provided with a third helical groove 71, and the inner circumferential surface of the lower housing 62 is provided with a sliding groove 621, which extends axially along the first driven gear 31. The first sliding shaft 21 of the output component 2 extends into the sliding groove 621, and the second sliding shaft 22 of the output component 2 extends into the second helical groove 421.

[0094] The first driven gear 31 drives the output component 2 to move in a straight line in the forward direction via the third cam 7, and the second driven gear 41 drives the output component 2 to move in a straight line in the reverse direction via the third cam 7. The input component 1 is an incomplete gear, and it rotates in one direction to alternately mesh with the first driven gear 31 and the second driven cam, thereby realizing the reciprocating movement of the output component 2. The engagement of the first driven gear 31 with the third cam can be understood as the first transmission mechanism 3, and the engagement of the second driven gear 41 with the third cam can be understood as the second transmission mechanism 4.

[0095] The above embodiments provide specific implementation methods for a transmission mechanism that combines a cam and a gear.

[0096] In some other embodiments of the first transmission mechanism 3 and the second transmission mechanism 4, the first transmission mechanism 3 and the second transmission mechanism 4 may be in the form of a gear and rack.

[0097] Reference Figure 13 The first transmission mechanism 3 includes a first driven gear 31, a third driven gear 35 and a first rack 36. The third driven gear 35 is coaxially arranged with the first driven gear 31 and rotates synchronously. The third driven gear 35 and the first driven gear 31 rotate synchronously to drive the first rack 36 to move in a straight positive direction.

[0098] The second transmission mechanism 4 includes a second driven gear 41, a fourth driven gear 45, and a second rack 46. The second driven gear 41 and the fourth driven gear 45 are coaxially arranged and rotate synchronously. The fourth driven gear 45 rotates synchronously with the second driven gear 41 to drive the second rack 46 to rotate in the opposite direction along a straight line.

[0099] The output component 2 is connected to the same end of the first rack 36 and the second rack 46. The first rack 36 and the second rack 46 drive the output component 2 to move forward and backward in a straight line, so as to realize the reciprocating motion of the output component 2.

[0100] In some embodiments, the reciprocating motion mechanism 10 may include multiple mounting bases, in which case the input element 1, the first transmission mechanism 3, and the second transmission mechanism 4 may be mounted on different mounting bases.

[0101] In other embodiments, the input component 1, the first transmission mechanism 3, and the second transmission mechanism 4 may also be mounted on the same mounting base to improve the integration of the reciprocating motion mechanism 10.

[0102] Reference Figure 10 In some embodiments, the end cap 63 is provided with a guide hole 631, through which the output component 2 passes. The guide hole 631 is used to guide the reciprocating motion of the output component 2 and reduce the risk of jamming caused by the tilting of the output component 2.

[0103] Reference Figure 8 and Figure 10 In some embodiments, the output component 2 includes multiple connecting rods 24, and the end cap 63 is provided with multiple guide holes 631. The multiple guide holes 631 correspond one-to-one with the multiple connecting rods 24, and each connecting rod 24 passes through the corresponding guide hole 631.

[0104] This application also provides a reciprocating tool, which includes the reciprocating motion mechanism 10 provided in any of the above embodiments. This reciprocating tool has the aforementioned beneficial effects of having the reciprocating motion mechanism 10, which will not be elaborated upon here for the sake of brevity.

[0105] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0106] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0107] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A reciprocating motion mechanism, characterized in that, include: Output components; The input component, which is connected to the output component, is configured to drive the output component to reciprocate through unidirectional rotation.

2. The reciprocating motion mechanism according to claim 1, characterized in that, The reciprocating motion mechanism further includes a first transmission mechanism and a second transmission mechanism, both of which are connected to the output component. The input component is configured to alternately connect to the first transmission mechanism and the second transmission mechanism during unidirectional rotation to drive the output component to reciprocate.

3. The reciprocating motion mechanism according to claim 2, characterized in that, The input component is an incomplete gear. The first transmission mechanism includes a first driven gear, and the second transmission mechanism includes a second driven gear. The input component is configured to alternately mesh with the first driven gear and the second driven gear during unidirectional rotation to drive the first transmission mechanism or the second transmission mechanism.

4. The reciprocating motion mechanism according to claim 3, characterized in that, The number of teeth on the input component is less than the number of teeth on the first driven gear; and / or, the number of teeth on the input component is less than the number of teeth on the second driven gear.

5. The reciprocating motion mechanism according to claim 3, characterized in that, The first driven gear and the second driven gear are coaxially arranged.

6. The reciprocating motion mechanism according to claim 5, characterized in that, The input component is a bevel gear, and the rotation axis of the bevel gear intersects with the rotation axis of the first driven gear.

7. The reciprocating motion mechanism according to claim 6, characterized in that, The reciprocating motion mechanism further includes: An auxiliary bevel gear is spaced apart from the input element and is configured to mesh synchronously with the first driven gear or the second driven gear in conjunction with the input element.

8. The reciprocating motion mechanism according to claim 7, characterized in that, The auxiliary bevel gear is coaxially arranged with the input component.

9. The reciprocating motion mechanism according to any one of claims 3-8, characterized in that, The first transmission mechanism further includes a first cam, which is connected to and coaxially arranged with the first driven gear. The inner circumferential surface of the first cam has a first helical groove extending helically along the axial direction of the first cam. The first transmission mechanism is connected to the output component via the first helical groove; and / or, The second transmission mechanism further includes a second cam, which is connected to and coaxially arranged with the second driven gear. The outer circumferential surface of the second cam has a second helical groove with the same helical direction as the first helical groove. The second helical groove extends helically along the axial direction of the second cam. The second transmission mechanism is connected to the output component via the second helical groove; and / or, The first cam is sleeved on the second cam, and a portion of the output component is embedded in the first helical groove and a portion of the output component is embedded in the second helical groove.

10. The reciprocating motion mechanism according to claim 9, characterized in that, The output component is fitted onto the second cam and located between the first cam and the second cam.

11. The reciprocating motion mechanism according to claim 9, characterized in that, The first cam is a cylindrical cam; and / or, the second cam is a cylindrical cam.

12. The reciprocating motion mechanism according to any one of claims 2-8, characterized in that, The reciprocating motion mechanism further includes a mounting base, the mounting base comprising: The housing, the input component is rotatably mounted on the housing, and both the first transmission mechanism and the second transmission mechanism are rotatably mounted on the housing and disposed within the housing; The outer casing is provided with a guide hole, and the output component passes through the guide hole.

13. The reciprocating motion mechanism according to any one of claims 1-8, characterized in that, The reciprocating motion mechanism further includes a mounting base, the mounting base comprising: The housing, wherein the input element is rotatably mounted; The outer casing is provided with a guide hole, and the output component passes through the guide hole.

14. A reciprocating tool, characterized in that, Includes the reciprocating motion mechanism as described in any one of claims 1-13.

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