Power switching mechanism

Abstract

The present invention provides a power switching mechanism, which is suitable for being detachably linked to a first switched component and includes a slider that can rotate about a rotation axis and includes two side surfaces located on opposite sides, and a plurality of engaging blocks protruding from the side surface of the slider facing the first switched component and suitable for engaging with the first switched component. At least one of the engaging blocks has a deep engaging section connected to the slider, and a shallow engaging section that is located further away from the slider than the deep engaging section and has a smaller projection range toward the slider than the deep engaging section. The engaging block first extends from the shallow engaging section with a smaller range into the corresponding engaged portion, thereby optimizing the smoothness of the gear shifting operation, and then stably engages the deep engaging section into gear to avoid collision with the first switched component and generating abnormal noise.

Description

Technical Field

[0001] This invention relates to a power transmission component for a vehicle, and more particularly to a power switching mechanism. Background Technology

[0002] See Figure 1 This is an existing shift gear 11, suitable for engaging with a gear 12 connected to a power source, thereby transmitting and outputting power. The shift gear 11 includes two surfaces 119 located on opposite sides along the axis of rotation. Figure 1 Due to the drawing angle, only one of the main body 111 is visible, along with a plurality of engaging blocks 112 that protrude from one of the surfaces 119 of the main body 111 in a direction parallel to the axis of rotation and are equidistant from each other around the axis of rotation. The gear 12 includes a wheel body 121 and a plurality of slots 122 recessed in the wheel body 121 for the engaging blocks 112 to extend into. When the engaging blocks 112 of the gear shift dog 11 are respectively extended into the slots 122 of the gear shift 12, the gear shift 12 can rotate together with the gear shift dog 11, thereby achieving the purpose of power transmission.

[0003] Since the power device (not shown in the figure) that provides the operating power continuously drives the gear 12 to rotate, when the shifting gear 11 moves toward the gear 12 in a direction parallel to the axis of rotation, the slots 122 are also in a state of rotating together with the wheel body 121. Figure 2 As shown. If the shape of each engaging block 112 matches the individual slot 122 more closely, although the stability of joint rotation can be ensured after proper engagement, when performing the shifting operation to move the shifting gear 11 toward the gear 12, the engagement operation will be unsmooth because each engaging block 112 must be properly aligned with each slot 122 to engage smoothly.

[0004] In order to facilitate the easy and smooth insertion of the locking blocks 112 into the slots 122 which are in a relatively rotating state, it is usually done as follows: Figure 3The diagram shows that each of the slots 122 is designed to be larger than each engagement block 112, thereby increasing the probability that the engagement blocks 112 will smoothly engage with the slots 122 and ensuring smooth gear shifting. However, with this design, even if the engagement blocks 112 are indeed placed in the corresponding slots 122, a larger gap will be created between each engagement block 112 and the surrounding wall 129 that defines the individual slot 122. Therefore, whenever a relative speed difference occurs between the shift gear 11 and the gear 12 due to operations such as throttle engagement / disengagement or braking, the engagement blocks 112 will strike the surrounding wall 129, resulting in abnormal noise.

[0005] In summary, whether the range of each card slot 122 is larger than the corresponding card engagement block 112, or the range of each card slot 122 matches the corresponding card engagement block 112, problems such as difficulty in shifting gears or abnormal noise will occur, making it difficult to achieve both simultaneously. Summary of the Invention

[0006] [The problem that this invention aims to solve]

[0007] Therefore, the purpose of this invention is to provide a power switching mechanism that can ensure smooth gear shifting and reduce noise caused by collisions between components.

[0008] [Technical means to solve the problem]

[0009] Therefore, the power switching mechanism of the present invention is applicable to a first switchable member that can be detachably linked to a first switchable member that rotates in a rotational direction. The power switching mechanism includes a slider rotatable about a rotational axis and comprising two sides located on opposite sides along the rotational axis, and a plurality of engaging blocks protruding from the sides of the sliders facing the first switchable member and adapted to engage with the first switchable member. At least one of the engaging blocks has a deep engaging section connected to the slider and a shallow engaging section located further away from the slider than the deep engaging section, and whose projection range toward the slider is smaller than that of the deep engaging section.

[0010] In some embodiments of the present invention, each of the engaging blocks has a rear side surface located rearward relative to the rotation direction, and a front side surface opposite to the rear side surface. The front side surface of the engaging block has a deep-reaching region whose projection range along the rotation direction overlaps with the deep engaging section and is parallel to the rotation axis, and a shallow-entry region whose projection range along the rotation direction overlaps with the shallow engaging section and is parallel to the rotation axis.

[0011] In some embodiments of the present invention, at least one of the engaging blocks further has a guide section connecting the deep engaging section and the shallow engaging section, and the front side of the engaging block further has a guide slope area whose projection range along the rotation direction overlaps with the guide section, and which connects the deep entry area and the shallow entry area and is inclined relative to the rotation axis.

[0012] Some embodiments of the present invention are applicable to a transmission module driven by a shift fork, the transmission module including a drum shaft, a transmission drum mounted on the drum shaft, and at least one preload spring disposed on the side of the transmission drum axially toward the first switched member, and for accumulating elastic restoring force under compression, wherein the guide slope area of ​​the front side of each of the engaging blocks abuts against the first switched member by releasing the elastic restoring force through the at least one preload spring.

[0013] In some embodiments of the present invention, based on the rotation direction, a first extension length between the rear side of at least one of the engaging blocks and the deep abutment area is defined as greater than a second extension length between the rear side and the shallow abutment area.

[0014] In some embodiments of the present invention, the first switchable member has a plurality of engaging portions arranged around each other at intervals, and the length of each engaging portion of the first switchable member extending along the rotation direction is defined as a predetermined length, wherein the first extension length is approximately the predetermined length but less than the predetermined length.

[0015] In some embodiments of the present invention, each of the engaging blocks has a deep engaging section and a shallow engaging section, and the power switching mechanism moves relative to the first switched member to each shallow engaging section into an advancing position of the individual engaged portion.

[0016] In some embodiments of the present invention, the power switching mechanism also moves relative to the first switched member from the gear shift position to a fixed position of each of the deep engagement sections into an individual engagement portion.

[0017] In some embodiments of the present invention, the first switchable member has a plurality of engaging portions arranged at intervals around each other. The length of each engaging portion of the first switchable member extending along the rotation direction is defined as a predetermined length. Each engaging block has a deep engaging section and a shallow engaging section. Based on the rotation direction, a third extending length is defined between the rear side of any engaging block and the deep abutment area of ​​the adjacent front engaging block. The third extending length is approximately equal to but less than the predetermined length.

[0018] In some embodiments of the present invention, the power switching mechanism moves relative to the first switched member to a shift position in the shallow engagement section of each of two adjacent engagement blocks into an individual engagement position.

[0019] In some embodiments of the present invention, the power switching mechanism also moves relative to the first switched member from the gear shift position to a fixed position where each of the deep engagement sections of two adjacent engagement blocks enters an individual engagement portion.

[0020] Some embodiments of the present invention are also applicable to a second switching member that can be detachably linked to a second switching member that rotates along the rotation direction. The power switching mechanism is disposed between the first switching member and the second switching member, and also includes a plurality of locking protrusions protruding on the side of the slider facing the second switching member and adapted to engage with the second switching member.

[0021] Some embodiments of the present invention are also applicable to a power system comprising a power source for providing operating power, a main shaft connected to the power source, a transmission module spaced parallel to the main shaft, a shift fork connecting the transmission module and the power switching mechanism, and a rotating shaft spaced parallel to the main shaft and fitted with the first switching member and the second switching member for outputting power, wherein the slider is adapted to be fitted onto the rotating shaft and connected to the shift fork.

[0022] In some embodiments of the present invention, the transmission module includes a drum shaft, a transmission drum mounted on the drum shaft, and at least one preload spring disposed on the side of the transmission drum axially toward the second switching member, and used to accumulate elastic restoring force under compression, wherein each of the locking protrusions abuts against the second switching member by releasing the elastic restoring force through the at least one preload spring.

[0023] [The effects achievable by this invention]

[0024] The advantages of this invention are as follows: the engagement block can first extend into the corresponding engagement part from the relatively small shallow engagement section to achieve the purpose of shifting gears immediately, thereby increasing the probability of successful gear shifting and optimizing the smoothness of gear shifting operation. Then, the deep engagement section engages stably, thus stabilizing the gear position while the deep engagement section is stably engaged, and avoiding mutual collision between the deep engagement section and the first switching member, thereby reducing abnormal noise.

[0025] In some embodiments of the present invention, the engaging block first contacts the first switching member through a shallow entry area that is parallel to the rotation axis and generally perpendicular to the rotation direction to achieve a first-time gear shift. Then, in conjunction with the elastic restoring force of the preloaded springs, the guide section exerts a guiding effect. After the first switching member contacts the guide slope area, a relatively guided effect is generated, which makes it easier for the power switching mechanism to move smoothly from the gear shift position to the fixed position.

[0026] In some embodiments of the present invention, the plurality of engaging blocks correspond to the plurality of engaging portions respectively.

[0027] In some embodiments of the present invention, two adjacent engaging blocks correspond to one engaging portion, thereby increasing the probability that the engaging blocks extend onto the corresponding engaging portion compared to a one-to-one configuration, and further optimizing the smoothness of gear shifting operations.

[0028] In some embodiments of the present invention, the power switching mechanism is disposed between the first switching member and the second switching member, and is linked to the second switching member by means of the locking protrusion. When both the first switching member and the second switching member are gears, the function of switching between two gears is achieved. Attached Figure Description

[0029] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0030] Figure 1 It is a three-dimensional exploded view illustrating an existing gear shifting dog tooth and a gear shifting gear for engaging with the gear shifting dog tooth.

[0031] Figure 2 and Figure 3 These are all schematic diagrams illustrating the shortcomings of the existing variable speed canine teeth;

[0032] Figure 4 This is a side view illustrating a vehicle in which a first embodiment of the power switching mechanism of the present invention is installed;

[0033] Figure 5 It is a partial perspective view illustrating a power system used in this first embodiment;

[0034] Figure 6 It is an exploded perspective view illustrating a slider and multiple engaging blocks of the first embodiment;

[0035] Figure 7 It is a sectional view illustrating the actual use of this embodiment in conjunction with the power system;

[0036] Figure 8This is a partially enlarged side view illustrating the structure of one of the engaging blocks in the first embodiment;

[0037] Figure 9 It is a partially enlarged front view illustrating the relative relationship between a deep engaging section and a shallow engaging section of the engaging block;

[0038] Figure 10 It is a schematic diagram, in conjunction with Figure 7 This describes the situation where the first embodiment is linked to a first switched component;

[0039] Figure 11 This is a schematic diagram from a forward view, illustrating the situation in which the locking blocks of this first embodiment are respectively extended into the multiple locking portions of the first switchable member;

[0040] Figure 12 It is similar Figure 11 The schematic diagram illustrates a second embodiment of the power switching mechanism of the present invention; and

[0041] Figure 13 This is a schematic diagram illustrating the situation where the two engaging blocks of the second embodiment extend into the corresponding engaging portion.

[0042] List of reference numerals

[0043] 2··········· Slider

[0044] 21··········· Side View

[0045] 3············Card Combination Block

[0046] 31···········Rear Side

[0047] 32···········Front Side

[0048] 323·········· Deep Dive Area

[0049] 324·········Shallow Entry Zone

[0050] 325········· Guide Slope Area

[0051] 33···········Deeply stuck joint segment

[0052] 34···········Shallow interlocking segment

[0053] 35···········Guiding Section

[0054] 4············ Card bump

[0055] 7············ Chassis

[0056] 8············ Power System

[0057] 81···········Power Source

[0058] 82···········Main Spindle

[0059] 83···········Transmission Module

[0060] 831·········Drum Shaft

[0061] 832········· Variable Speed ​​Drum

[0062] 833·········Preloaded Spring

[0063] 84···········Fork

[0064] 85··········· Rotation axis

[0065] 89··········· Gear Shifting Electric Motor

[0066] 900··········Being stuck in the middle

[0067] 91···········First Switched Component

[0068] 92···········Second Switched Component

[0069] L1···········First Extension Length

[0070] L2···········Second Extension Length

[0071] L3···········Third Extension Length

[0072] S············Set Length

[0073] R············ Rotation direction. Detailed Implementation

[0074] Before the invention is described in detail, it should be noted that similar elements are represented by the same numbers in the following description.

[0075] See Figures 4 to 6This is a first embodiment of the power switching mechanism of the present invention, applicable to a first switching member 91 that rotates along a rotation direction R, or a second switching member 92 that rotates along the rotation direction R and is coaxially spaced from the first switching member 91. Specifically, the first switching member 91 and the second switching member 92 are two gears with different gear positions, each having multiple engaging portions 900 arranged at intervals around each other. The engaging portions 900 can be through holes, recesses, or tooth grooves, etc.; in this embodiment, a through hole is used as an example. Figure 5 and Figure 7 As shown, this first embodiment is connected to a power system 8. The power system 8 includes a power source 81 for providing operating power, a main shaft 82 connected to the power source 81, a transmission module 83 parallel and spaced from the main shaft 82, a shift fork 84 connecting the transmission module 83 and this first embodiment, and a rotating shaft 85 parallel and spaced from the main shaft 82, fitted onto the first embodiment, and used to output power. The transmission module 83 includes a drum shaft 831, a transmission drum 832 fitted onto the drum shaft 831, and two preload springs 833 respectively disposed on opposite sides of the transmission drum 832, used to accumulate elastic restoring force under compression. The power source 81, the transmission module 83, and this first embodiment are integrally fixed to a vehicle frame 7 (see...). Figure 4 On the vehicle, a rocker arm can be provided so that the rocker arm can support the drive wheel in contact with the ground by swinging up and down relative to the frame 7; or, the power system 8 can transmit the driving force to the drive wheel via a belt-like element (such as a belt or chain), thereby reducing the swing inertia of the rocker arm and improving the vehicle's maneuverability.

[0076] In addition, this first embodiment is disposed between the first switchable member 91 and the second switchable member 92, and the first switchable member 91 and the second switchable member 92 are rotatably sleeved on the rotating shaft 85, so that the first embodiment, the first switchable member 91 and the second switchable member 92 are coaxially spaced apart from each other along the rotating shaft 85.

[0077] It should be noted that this embodiment is described with the power source 81 being an electric motor. However, this first embodiment, in addition to the electric power system 8, can also be used with a fuel-powered system where the power source 81 is an internal combustion engine, or even a hybrid system. It is particularly suitable for electric vehicles with a clutchless power switching mechanism. The drive control of this first embodiment can be achieved through direct human operation, or by using, for example... Figure 5 The electric motor 89 shown is driven by an electrical mechanism.

[0078] Revisit Figure 6 and cooperate Figure 5 This first embodiment includes a slider 2 rotatable about a rotation axis and comprising two sides 21 located on opposite sides along the rotation axis, a plurality of engaging blocks 3 protruding from the sides 21 of the slider 2 facing the first switchable member 91 and adapted to engage with the first switchable member 91, and a plurality of engaging protrusions 4 protruding from the sides 21 of the slider 2 facing the second switchable member 92 and adapted to engage with the second switchable member 92. Specifically, the engaging blocks 3 and the engaging protrusions 4 are equidistant from each other around the rotation axis, and their relative positions correspond to the engaging portions 900.

[0079] See Figure 8 and cooperate Figure 6 Each locking block 3 has a rear side 31 located at the rear relative to the rotation direction R, a front side 32 opposite to the rear side 31, a deep locking section 33 connected to the slider 2, a shallow locking section 34 located further away from the slider 2 than the deep locking section 33 and whose projection range toward the slider 2 is smaller than that of the deep locking section 33, and a guide section 35 connecting the deep locking section 33 and the shallow locking section 34. The front side 32 has a deep abutment area 323 whose projection range along the rotation direction R overlaps with the deep engagement section 33 and is parallel to the rotation axis; a shallow entry area 324 whose projection range along the rotation direction R overlaps with the shallow engagement section 34 and is parallel to the rotation axis; and a guide slope area 325 whose projection range along the rotation direction R overlaps with the guide section 35, connects between the deep abutment area 323 and the shallow entry area 324, and is inclined relative to the rotation axis.

[0080] See also Figure 8 and Figure 9 and cooperate Figure 6With reference to the rotation direction R, a first extension length L1 between the rear side surface 31 and the deep abutment area 323 of the engaging block 3 is defined as greater than a second extension length L2 between the rear side surface 31 and the shallow abutment area 324. It should be noted that since the corresponding engaging portion 900 is generally an arc-shaped slot, for ease of understanding, the length mentioned here is essentially the "arc length on the same circumference," which facilitates comparison with the coverage area of ​​the arc-shaped slotted engaging portion 900. The width along the relatively vertical direction is based on the principle that the width of the engaging block 3 is sufficient to accommodate it, and will not be elaborated here. Herein, the length of each of the engaging portions 900 of the first switching member 91 extending along the rotation direction R is defined as a set length S, which represents the extension space of the through hole to be engaged by the individual engaging block 3. The first extension length L1 is approximately the set length S but less than the set length S, so that when each engaging block 3 is extended into the individual engaging portion 900, the opposite ends do not form an excessive gap.

[0081] See Figure 10 and cooperate Figure 7 In this first embodiment, the shift fork 84 is controlled to move back and forth along the axial direction parallel to the rotation axis 85 by rotating the shift drum 832 relative to the drum shaft 831. This causes the first embodiment to move along the axial direction parallel to the rotation axis 85, achieving the operation of moving towards the first switching member 91 or towards the second switching member 92, that is, switching between two gears. It should be noted that if the first embodiment remains between the first switching member 91 and the second switching member 92, it is in the neutral state of not being engaged.

[0082] like Figure 10 As shown, the explanation begins with the first embodiment moving towards the first switchable member 91 until it is engaged with the first switchable member 91, and presents the case where a single engaging block 3 is coupled to a corresponding engaging portion 900. This first embodiment is as follows... Figure 10As shown, each of the shallow engaging sections 34 moves from an advancing position into an individual engaged portion 900 to a fixed position into an individual engaged portion 900 for each of the deep engaging sections 33. When the shallow engaging sections 34 of the engaging blocks 3 are respectively extended into the engaged portions 900, i.e., when the first embodiment is in the advancing position, the relatively perpendicular structure of the shallow entry areas 324 relative to the rotation direction R allows for immediate engagement with the solid wall surface surrounding the engaged portions 900. Next, by means of the relatively inclined shape of the guide slope areas 325 of the locking blocks 3, and in conjunction with the elastic restoring force of the preload springs 833, the solid structure of the first switching member 91 can be made to abut against the guide slope area 325, thereby creating a guiding effect relative to the first switching member 91. That is, as the locking blocks 3 continue to move toward the first switching member 91, the solid wall surfaces of the locking portions 900 slide relative to the guide slope areas 325 until the deep locking sections 33 are properly extended into the locking portions 900, that is, the first embodiment is properly moved to the fixed position, preventing the first embodiment from disengaging after shifting into gear, thereby achieving the effect of stabilizing the gear position.

[0083] See Figure 11 and cooperate Figure 10 In the first embodiment, during the shifting process towards the first switching member 91, the engaging block 3 can first extend into the corresponding engaging part 900 by the shallow engaging section 34, which covers an area smaller than the engaging part 900. Therefore, it can smoothly move to the shifting position first, which not only increases the probability of successful shifting, but also optimizes the smoothness of the shifting operation. Next, following the guiding effect of the guide section 35, the deep engaging section 33, whose length along the rotation direction R roughly matches the engaging part 900, is stably engaged. Not only can the deep engaging section 33 be stably engaged without disengaging, but even if there is only a very small gap between each deep engaging section 33 and the solid structure forming the engaging part 900, even if the first embodiment and the first switching member 91 rotate asynchronously, the relative movement speed will not be too large when the gap is very small. Therefore, it can avoid the deep engaging section 33 and the first switching member 91 from causing impacts that could cause damage. This not only reduces wear between parts and extends service life, but also reduces noise.

[0084] It should be further noted that the technical details regarding the coupling of this first embodiment to the second switchable member 92 are mainly achieved through the card bump 4, using a similar mechanism to that between the card assembly 3 and the first switchable member 91. Whether the card bump 4 forms the same structure as the card assembly 3, or adopts a conventional structure, can be evaluated, for example, by the rotational speed gear parameter, and will not be elaborated here.

[0085] See Figure 12 and Figure 13 This is a second embodiment of the power switching mechanism of the present invention. The difference between this second embodiment and the first embodiment is that, with reference to the rotation direction R, a third extension length L3 is defined between the rear side surface 31 of any of the engaging blocks 3 and the deep contact area 323 of the adjacent front engaging block 3. This third extension length L3 is approximately the set length S but less than the set length S. In this second embodiment, relative to the first switched member 91, the device moves from an advancing position where the shallow engaging sections 34 of every two adjacent engaging blocks 3 enter an individual engaging portion 900, to a fixed position where the deep engaging sections 33 of every two adjacent engaging blocks 3 enter an individual engaging portion 900.

[0086] Compared to the first embodiment, this second embodiment has two adjacent engaging blocks 3 corresponding to one engaging part 900. Compared to a one-to-one arrangement with the same number of blocks, when the first switching member 91 is rotating, this second embodiment has a higher probability of moving to the gear shift position first, thus further optimizing the smoothness of gear shifting. Apart from this, the second embodiment achieves the same effect as the first embodiment.

[0087] In summary, the power switching mechanism of the present invention, because the shallow engaging sections 34 of the engaging blocks 3 are smaller than the engaging portions 900, makes it easier to first extend them into the engaging portions 900 to achieve engagement. Furthermore, the deep engaging sections 33, which have a larger coverage area than the shallow engaging sections 34 and are closer to the engaging portions 900, can minimize the formation of excessively large gaps that could cause undesirable impacts during relative movement when they are properly extended into the engaging portions 900. This effectively reduces noise caused by impacts while simultaneously ensuring smooth engagement. Therefore, the objective of the present invention is indeed achieved.

[0088] The above description is merely an embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the patent of the present invention.

Claims

1. A power switching mechanism, characterized in that, The power switching mechanism is adapted to be detachably linked to a first switching member rotating in a rotational direction, and includes: A slider, rotatable about a rotation axis, and comprising two side surfaces located on opposite sides along said rotation axis; and Multiple engaging blocks are protruding from the side of the slider facing the first switched member and are adapted to engage with the first switched member. At least one of the engaging blocks has a deep engaging section connected to the slider and a shallow engaging section located further away from the slider than the deep engaging section and having a projection range toward the slider smaller than that of the deep engaging section.

2. The power switching mechanism according to claim 1, characterized in that, Each of the engagement blocks has a rear side relative to the direction of rotation and a front side opposite to the rear side. The front side of the engagement block has a deep-reaching region whose projection range along the direction of rotation overlaps with the deep engagement segment and is parallel to the axis of rotation, and a shallow-entry region whose projection range along the direction of rotation overlaps with the shallow engagement segment and is parallel to the axis of rotation.

3. The power switching mechanism according to claim 2, characterized in that, At least one of the locking blocks further has a guide section connecting the deep locking section and the shallow locking section, and the front side of the locking block further has a guide slope area that overlaps with the guide section along the rotation direction, connects the deep entry area and the shallow entry area, and is inclined relative to the rotation axis.

4. The power switching mechanism according to claim 3, characterized in that, Suitable for use with a shift fork driven by a transmission module, the transmission module including a drum shaft, a shift drum mounted on the drum shaft, and at least one preload spring disposed on the side of the shift drum axially toward the first switched member, and for accumulating elastic restoring force under compression, wherein the guide slope area of ​​the front side of each of the engaging blocks abuts against the first switched member by releasing the elastic restoring force through the at least one preload spring.

5. The power switching mechanism according to claim 2, characterized in that, Based on the rotation direction, a first extension length between the rear side of at least one of the engaging blocks and the deep abutment area is defined as greater than a second extension length between the rear side and the shallow abutment area.

6. The power switching mechanism according to claim 5, characterized in that, The first switchable member has a plurality of engaging portions arranged around each other at intervals. The length of each engaging portion of the first switchable member extending along the rotation direction is defined as a predetermined length, wherein the first extension length is approximately the predetermined length but less than the predetermined length.

7. The power switching mechanism according to claim 6, characterized in that, Each of the engagement blocks has a deep engagement section and a shallow engagement section, and the power switching mechanism moves relative to the first switched member to a shift position where each of the shallow engagement sections enters an individual engagement portion.

8. The power switching mechanism according to claim 7, characterized in that, The power switching mechanism also moves relative to the first switched member from the gear shift position to a fixed position of each of the deep engagement sections into the individual engagement portion.

9. The power switching mechanism according to claim 5, characterized in that, The first switchable member has a plurality of engaging portions arranged around each other at intervals. The length of each engaging portion of the first switchable member extending along the rotation direction is defined as a predetermined length. Each engaging block has a deep engaging section and a shallow engaging section. Based on the rotation direction, a third extending length is defined between the rear side of any engaging block and the deep abutment area of ​​the adjacent front engaging block. The third extending length is approximately equal to but less than the predetermined length.

10. The power switching mechanism according to claim 9, characterized in that, The power switching mechanism moves relative to the first switched member to a shift position where the shallow engagement section of each pair of adjacent engagement blocks enters an individual engagement portion.

11. The power switching mechanism according to claim 10, characterized in that, The power switching mechanism also moves relative to the first switched member from the gear shift position to a fixed position where the deep engagement section of each pair of adjacent engagement blocks enters an individual engagement portion.

12. The power switching mechanism according to claim 1, characterized in that, It is also applicable to a second switching member that can be detachably linked to a second switching member that rotates along the rotation direction, wherein the power switching mechanism is disposed between the first switching member and the second switching member, and further includes a plurality of protrusions on the side of the slider facing the second switching member, and is adapted to engage with the second switching member.

13. The power switching mechanism according to claim 12, characterized in that, It is also applicable to a power system comprising a power source for providing operating power, a main shaft connected to the power source, a transmission module spaced parallel to the main shaft, a shift fork connecting the transmission module and the power switching mechanism, and a rotating shaft spaced parallel to the main shaft and fitted onto the first and second switched components for outputting power, wherein the slider is adapted to be fitted onto the rotating shaft and connected to the shift fork.

14. The power switching mechanism according to claim 13, characterized in that, The transmission module includes a drum shaft, a transmission drum mounted on the drum shaft, and at least one preload spring disposed on the side of the transmission drum facing the second switching member along the axial direction, and used to accumulate elastic restoring force under compression, wherein each of the locking protrusions abuts against the second switching member by means of the elastic restoring force released by the at least one preload spring.

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