A new shock-absorbing structure

Abstract

The present invention discloses a novel shock-absorbing structure, which includes a shock-absorbing main body and a rotating shaft rotatably connected to the center of the shock-absorbing main body. The interior of the shock-absorbing main body is divided into a first oil storage cavity, a second oil storage cavity, a first compression cavity and a second compression cavity. On both sides of the rotating shaft, there are respectively a first oil-pressing blade located in the first compression cavity and a second oil-pressing blade located in the second compression cavity; Nitrogen and oil are introduced into both the first oil storage cavity and the second oil storage cavity, and oil is injected into both the first compression cavity and the second compression cavity. The first oil-pressing blade divides the first compression cavity into a first compression area and a first reflux area, and the second oil-pressing blade divides the second compression cavity into a second compression area and a second reflux area. Elastic mechanisms are also provided on the first oil-pressing blade and the second oil-pressing blade. The present invention realizes buffer shock absorption through the swing of the blades and the flow of the oil, has a better shock-absorbing effect, a wider range of applicable vehicle models, and is lighter in weight and smaller in size, facilitating hidden installation.

Description

Technical Field

[0001] The present invention relates to the technical field of shock-absorbing devices, and particularly to a novel shock-absorbing structure. Background Art

[0002] In the prior art, in order to adapt to the bumps of various road sections and improve the riding comfort, a shock-absorbing structure is usually installed on a bicycle or an electric vehicle. When the vehicle travels on an uneven road surface, its shock-absorbing structure will be compressed, so as to achieve the effect of shock absorption, thereby reducing the vibration and sway of the vehicle and improving the riding comfort.

[0003] However, for current bicycles and electric vehicles, most of the shock-absorbing structures used are conventional spring shock absorbers or straight-tube shock absorbers. The shock-absorbing strokes of both are linear, resulting in a longer length of the entire shock absorber and a larger occupied space. On the one hand, it is relatively conspicuous and exposed after being installed on the vehicle, affecting the aesthetics of the whole vehicle. On the other hand, during the actual bump and vibration process of the frame and the wheel, they do not vibrate accurately along the length direction of the shock absorber, but swing up and down in an inclined manner with an angle change. Therefore, the traditional linear shock absorber can only absorb and relieve the amplitude in a small range of directions, and the shock-absorbing effect is not obvious in the case of a large bump and swing amplitude, and it is a bit rigid. At the same time, the conventional spring shock absorber is exposed outside and is easily damaged by the harsh weather environment, thereby affecting its service life. Moreover, the spring shock absorber is also relatively heavy, increasing the weight and burden of the whole vehicle. Especially when climbing a slope, it will slow down the speed of the bicycle, making it more strenuous for people to ride. In addition, the internal space of a general straight-tube shock absorber is small, and the corresponding internal oil is less, so the shock-absorbing effect is limited, and the applicable range of vehicle models is also relatively small. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a novel shock-absorbing structure, which realizes buffer shock absorption through the swing of blades and the flow of oil, has a better shock-absorbing effect, and is small in size and convenient for hidden installation.

[0005] In order to solve the above technical problem, the technical solution of the present invention is as follows:

[0006] A novel shock-absorbing structure, which includes a shock-absorbing main body and a rotating shaft rotatably connected to the center of the shock-absorbing main body. The interior of the shock-absorbing main body is divided into a first oil storage cavity, a second oil storage cavity, a first compression cavity and a second compression cavity. On both sides of the rotating shaft, there are respectively a first oil-pressing blade located in the first compression cavity and a second oil-pressing blade located in the second compression cavity;

[0007] Nitrogen and oil are introduced into both the first oil storage chamber and the second oil storage chamber. Oil is injected into both the first compression chamber and the second compression chamber. The first oil pressing vane divides the first compression chamber into a first compression zone and a first return zone. The second oil pressing vane divides the second compression chamber into a second compression zone and a second return zone. An elastic mechanism is also provided on the first oil pressing vane and the second oil pressing vane;

[0008] When the rotating shaft rotates, the first oil pressing vane and the second oil pressing vane can swing and squeeze the oil in the first compression chamber and the second compression chamber respectively. When the rotating shaft rotates forward, the oil in the first compression zone can enter the first oil storage chamber and the first return zone, and the oil in the second compression zone can enter the second oil storage chamber and the second return zone. When the rotating shaft rotates reversely, the oil in the first oil storage chamber and the first return zone can enter the first compression zone, and the oil in the second oil storage chamber and the second return zone can enter the second compression zone. The elastic mechanism can form a buffer when the first oil pressing vane and the second oil pressing vane swing.

[0009] Further, a first one-way valve and a first damping valve are provided on the first oil pressing vane, and a second one-way valve and a second damping valve are provided on the second oil pressing vane. The first compression zone and the first oil storage chamber are connected through a third one-way valve and a third damping valve, and the second compression zone and the second oil storage chamber are connected through a fourth one-way valve and a fourth damping valve;

[0010] When the rotating shaft rotates forward, the oil in the first compression zone can enter the first oil storage chamber through the third damping valve and enter the first return zone through the first one-way valve. The oil in the second compression zone can enter the second oil storage chamber through the fourth damping valve and enter the second return zone through the second one-way valve. When the rotating shaft rotates reversely, the oil in the first oil storage chamber can enter the first compression zone through the third one-way valve, the oil in the first return zone can enter the first compression zone through the first damping valve, the oil in the second oil storage chamber can enter the second compression zone through the fourth one-way valve, and the oil in the second return zone can enter the second compression zone through the second damping valve.

[0011] Further, the shock absorber main body includes a cylindrical shock absorber housing and two cover plates provided on both sides and forming a closed space with the shock absorber housing. The middle diameter of the rotating shaft is larger than that of both ends and is formed with two steps. The two cover plates are closely attached to the step surfaces and are rotatably connected to both ends of the rotating shaft.

[0012] Further, a first air injection hole communicating with the first oil storage chamber and a second air injection hole communicating with the second oil storage chamber are respectively provided on both sides of the shock absorber housing. First oil injection holes communicating with the first compression chamber and second oil injection holes communicating with the second compression chamber are provided on both cover plates.

[0013] Further, an annular partition plate is arranged inside the shock absorber housing and divides the internal space of the shock absorber housing into an inner ring space and an outer ring space. The two cover plates are respectively in close contact with the two end faces of the annular partition plate to form a seal;

[0014] The annular partition plate is fixed inside the shock absorber housing by two baffles, and the two baffles divide the outer ring space into a first oil storage chamber and a second oil storage chamber. Two arc-shaped limiting partition plates are formed on the inner wall of the annular partition plate. The middle of the rotating shaft is rotatably installed between the two limiting partition plates, and the two limiting partition plates and the rotating shaft divide the inner ring space into a first compression chamber and a second compression chamber;

[0015] Both the first oil pressing blade and the second oil pressing blade are arc-shaped, and the two are arranged in an overall S shape. The edges of the first oil pressing blade and the second oil pressing blade are in sealing fit with the inner wall of the annular partition plate.

[0016] Further, a fifth damping valve and a sixth damping valve are respectively arranged on the two limiting partition plates. The fifth damping valve unidirectionally communicates the first compression zone to the second return zone, and the sixth damping valve unidirectionally communicates the second compression zone to the first return zone. The opening pressure required by the fifth damping valve is greater than that of the third damping valve, and the opening pressure required by the sixth damping valve is greater than that of the fourth damping valve.

[0017] Further, the elastic mechanism includes arc-shaped guide rails arranged on the two limiting partition plates and multiple arc-shaped springs sleeved on the arc-shaped guide rails. The first oil pressing blade and the second oil pressing blade are in sealed sliding connection with the arc-shaped guide rails and are connected to the two limiting partition plates through the multiple arc-shaped springs. When the first oil pressing blade and the second oil pressing blade swing, they can compress and stretch the arc-shaped springs.

[0018] Further, annular seats are respectively arranged in the centers of the outer sides of the two cover plates. A bearing is installed in each annular seat. The inner rings of the two bearings are respectively installed at both ends of the rotating shaft, and a bearing cover is also arranged on the outer end face of the annular seat.

[0019] Further, torsion springs are respectively arranged in the centers of the outer sides of the two cover plates. The other ends of the torsion springs are used to connect to the rear fork of the vehicle body.

[0020] Further, bolts are respectively assembled at both ends of the rotating shaft. The bolts are used to connect to the rear fork of the vehicle body. An ear seat is arranged at the bottom of the shock absorber main body. The ear seat is used to connect to the vehicle frame.

[0021] Adopting the above technical solutions, the present invention has the following beneficial effects:

[0022] 1. Through the first oil storage cavity, the second oil storage cavity, the first compression cavity and the second compression cavity formed inside the shock absorber main body, in cooperation with the rotating shaft and the first oil pressing blade and the second oil pressing blade thereon, when vibrating, the rotation of the rotating shaft drives the first oil pressing blade and the second oil pressing blade to swing, so that the oil in the first compression cavity and the second compression cavity flows. Through the damping effect of the oil in the double-chamber, a buffering effect can be formed on the first oil pressing blade and the second oil pressing blade, and then fed back to the rotating shaft and the rear fork of the vehicle body to achieve the effect of buffering and shock absorption, and slow down the undulation of the vehicle body. The structural design is different from the traditional linear shock absorption method. The rotating shaft and the blade can rotate following the vibration of the rear fork of the vehicle body, and the direction of the blade affected by the oil resistance can more conform to the trend of the vehicle body vibration, that is, the buffering and shock absorption effect is closer to the angular swing of the vehicle body, and then the effect of absorbing and alleviating the amplitude will be better. The shock absorption effect for large-amplitude vibration will also be more obvious, and there will be no rigid feeling when reaching the limit. Therefore, it can be applied to more types and models of vehicles.

[0023] 2. Through the setting of the elastic mechanism, the first oil pressing blade and the second oil pressing blade can be assisted in buffering and shock absorption, making the overall shock absorption effect better; the elastic force of the arc spring can be selected according to requirements. Therefore, on the basis of the blade being affected by the oil damping effect, with the auxiliary buffering of the elastic mechanism, the limit vibration amplitude that can be shock-absorbed will be increased, and then it can be applied to more models of vehicles and more severe terrains.

[0024] 3. The shock absorber housing of the present invention has a cylindrical structure. On the one hand, it can effectively increase the space of the internal cavity, increase the reserve of oil, and ensure the maximization of the overall shock absorption effect; on the other hand, when the blade swings and generates heat due to the damping effect of the oil, the heat will be dissipated through the shock absorber housing to complete the conversion of kinetic energy and heat energy. The design of the cylindrical structure can increase the heat dissipation area, prevent problems such as cylinder explosion, and effectively extend the service life of the structure.

[0025] 4. In the present invention, the first oil pressing blade and the second oil pressing blade are designed in an arc shape structure, and the two are arranged in an S shape as a whole, which can effectively increase the stress area of the blade, improve the effect of oil damping buffering, and enhance the shock absorption effect.

[0026] 5. The interior of the present invention is divided into four large chambers. The two compression chambers are further divided into a compression zone and a reflux zone by the first oil-pressing vane and the second oil-pressing vane. When the vane swings, through the combined action of multiple one-way valves and damping valves, the oil fluid circulates back and forth between the compression zone, the reflux zone, and the oil storage chamber, and a buffering and shock-absorbing effect is generated through the damping effect of the oil fluid on the vane. At the same time, through the fifth damping valve and the sixth damping valve arranged on the two limiting partition plates, the first compression zone is communicated with the second reflux zone, and the second compression zone is communicated with the first reflux zone. Moreover, the opening pressures required by the fifth damping valve and the sixth damping valve are greater than those of the third damping valve and the fourth damping valve, so as to ensure that in the case of a large vibration amplitude, the fifth damping valve and the sixth damping valve are temporarily opened to relieve the pressure of the oil fluid circulation and avoid problems such as cylinder explosion and rigid failure of shock absorption.

[0027] 6. The overall size of the present invention is small, occupying little space and having little weight, which is convenient for installation. After installation, it can adapt to the structure of the vehicle body itself, be well hidden and protected, not easily damaged by the outside world, and at the same time, it looks more beautiful in appearance, having the advantages of market sales.

[0028] 7. A torsion spring is also installed on the outside of the cover plate of the present invention to connect with the vehicle body, so as to improve the shock-absorbing effect, relieve the pressure of the internal damping shock absorption of the shock absorber, and also avoid the problem of cylinder explosion caused by too strong amplitude in case of emergencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention;

[0030] Figure 2 is a schematic structural diagram of the other side of the present invention;

[0031] Figure 3 is a schematic partial structural decomposition diagram of the present invention;

[0032] Figure 4 is an assembly schematic diagram of the bearing of the present invention;

[0033] Figure 5 is a schematic internal structural diagram of the present invention;

[0034] Figure 6 is Figure 5 a schematic diagram of another perspective of the structure in

[0035] Figure 7 is Figure 5 a schematic diagram of yet another perspective of the structure in

[0036] Figure 8 is a schematic internal structural diagram of the shock-absorbing housing of the present invention;

[0037] Figure 9Schematic diagram of the cover plate of the present invention;

[0038] Figure 10 Schematic diagram of the rotating shaft of the present invention;

[0039] Figure 11 Installation state diagram of the present invention;

[0040] Wherein, 1. Shock absorber main body; 101. First oil storage cavity; 102. Second oil storage cavity; 11. First compression cavity; 111. First compression area; 112. First return area; 12. Second compression cavity; 121. Second compression area; 122. Second return area; 13. Shock absorber housing; 131. First air injection hole; 132. Second air injection hole; 133. Ear seat; 14. Cover plate; 141. First oil injection hole; 142. Second oil injection hole; 143. Ring seat; 15. Ring partition plate; 16. Baffle; 17. Limit partition plate; 2. Rotating shaft; 21. First oil pressing blade; 22. Second oil pressing blade; 200. Step; 31. First one-way valve; 32. Second one-way valve; 33. Third one-way valve; 34. Fourth one-way valve; 41. First damping valve; 42. Second damping valve; 43. Third damping valve; 44. Fourth damping valve; 45. Fifth damping valve; 46. Sixth damping valve; 5. Elastic mechanism; 50. Arc guide rail; 51. Arc spring; 6. Bearing; 60. Bearing cover; 7. Torsion spring; 8. Bolt; 91. Rear fork; 92. Frame. Detailed implementation manners

[0041] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments and in conjunction with the drawings.

[0042] As Figures 1-11 shown, in this embodiment, a new shock absorption structure is provided, which mainly consists of a shock absorber main body 1 and a rotating shaft 2 rotatably connected to the center of the shock absorber main body 1. Bolts 8 are assembled at both ends of the rotating shaft 2, and the whole of this embodiment can be assembled between two rear forks 91 of the vehicle body through the bolts 8 on both sides. At the same time, an ear seat 133 is welded to the bottom of the shock absorber main body 1, and the ear seat 133 can be fixedly connected to the frame 92 of the vehicle body through screws. When the vehicle body vibrates, the rear fork 91 will drive the rotating shaft 2 to rotate.

[0043] Referring to Figures 1-11 , in order to achieve the shock absorption effect, this embodiment is designed as follows:

[0044] The specific shock absorber main body 1 is composed of a cylindrical shock absorber housing 13 and two cover plates 14 which are arranged on both sides and welded to the shock absorber housing 13 to form a closed space. The rotating shaft 2 passes through the closed space and is rotatably connected to the centers of the two cover plates 14. Of course, in order to reduce the friction of rotation and improve the sealing effect, annular seats 143 are formed in the centers of the outer sides of the two cover plates 14. A bearing 6 is installed in each annular seat 143. The inner rings of the two bearings 6 are respectively installed at both ends of the rotating shaft 2. A bearing cover 60 is also provided on the outer end face of the annular seat 143. In this way, when the rotating shaft 2 rotates, the friction with the cover plate 14 can be reduced, and the sealing effect at the connection can be ensured. At the same time, the diameter of the middle part of the rotating shaft 2 is larger than that of both ends, and two steps 200 are formed. The inner walls of the two cover plates 14 are closely attached to the step 200 surfaces to form a certain sealing effect.

[0045] An annular partition plate 15 is arranged in the closed space formed by the shock absorber housing 13 and the two cover plates 14. The inner walls of the two cover plates 14 are respectively closely attached to both end faces of the annular partition plate 15 to form a seal. Therefore, the annular partition plate 15 divides the closed space into an inner ring space and an outer ring space. The annular partition plate 15 is also welded to the inner wall of the shock absorber housing 13 through two baffle plates 16. The two baffle plates 16 just divide the outer ring space into a first oil storage cavity 101 and a second oil storage cavity 102 which are centrosymmetric. Two arc-shaped limiting partition plates 17 are also formed on the inner wall of the annular partition plate 15. The two limiting partition plates 17 are arranged in an S shape. The large-diameter part in the middle of the rotating shaft 2 is just rotatably installed between the two limiting partition plates 17. The inner ring space is divided into a first compression cavity 11 and a second compression cavity 12 which are centrosymmetric by relying on the two limiting partition plates 17 and the rotating shaft 2.

[0046] At the same time, a first oil pressing blade 21 and a second oil pressing blade 22 which are centrosymmetric are respectively arranged on both sides of the rotating shaft 2. The first oil pressing blade 21 is located in the first compression cavity 11 and its edge is hermetically attached to the inner wall of the annular partition plate 15. The second oil pressing blade 22 is located in the second compression cavity 12 and its edge is hermetically attached to the inner wall of the annular partition plate 15. The first oil pressing blade 21 divides the first compression cavity 11 into a first compression area 111 and a first return area 112. The second oil pressing blade 22 divides the second compression cavity 12 into a second compression area 121 and a second return area 122. In addition, both the first oil pressing blade 21 and the second oil pressing blade 22 are arc-shaped, and the two are arranged in an S shape as a whole. In this way, the stress area of the blade can be effectively increased, the damping buffering effect of the oil can be improved, and the shock absorption effect can be enhanced.

[0047] Of course, oil and nitrogen need to be introduced into each chamber. Specifically, a first air injection hole 131 communicating with the first oil storage chamber 101 and a second air injection hole 132 communicating with the second oil storage chamber 102 are respectively provided on both sides of the shock absorber housing 13, so as to introduce nitrogen into the first oil storage chamber 101 and the second oil storage chamber 102. First oil injection holes 141 communicating with the first compression chamber 11 and second oil injection holes 142 communicating with the second compression chamber 12 are provided on both cover plates 14, so as to inject oil into the first compression chamber 11 and the second compression chamber 12.

[0048] To achieve the circulation of oil, a first one-way valve 31 and a first damping valve 41 are provided on the first oil pressing vane 21, a second one-way valve 32 and a second damping valve 42 are provided on the second oil pressing vane 22, a third one-way valve 33 and a third damping valve 43 are provided on the upper part of the annular partition plate 15, and the first compression zone 111 and the first oil storage chamber 101 are communicated through the third one-way valve 33 and the third damping valve 43. A fourth one-way valve 34 and a fourth damping valve 44 are provided on the lower part of the annular partition plate 15, and the second compression zone 121 and the second oil storage chamber 102 are communicated through the fourth one-way valve 34 and the fourth damping valve 44. The flow directions of each valve are as follows: the first one-way valve 31 is from the first compression zone 111 to the first return zone 112, the first damping valve 41 is from the first return zone 112 to the first compression zone 111, the third damping valve 43 is from the first compression zone 111 to the first oil storage chamber 101, the third one-way valve 33 is from the first oil storage chamber 101 to the first compression zone 111, the second one-way valve 32 is from the second compression zone 121 to the second return zone 122, the second damping valve 42 is from the second return zone 122 to the second compression zone 121, the fourth damping valve 44 is from the second compression zone 121 to the second oil storage chamber 102, and the fourth one-way valve 34 is from the second oil storage chamber 102 to the second compression zone 121.

[0049] The working principle of this embodiment is that when the rear fork 91 of the vehicle body vibrates, it will drive the rotating shaft 2 to rotate, and then drive the first oil pressing vane 21 and the second oil pressing vane 22 to swing and squeeze the oil in the first compression chamber 11 and the second compression chamber 12 respectively, so that the oil in the first compression chamber 11 and the second compression chamber 12 flows. Through the damping effect of the oil, a buffering effect can be formed on the first oil pressing vane 21 and the second oil pressing vane 22, and then feedback to the rotating shaft 2 and the rear fork 91 of the vehicle body to achieve a buffering and shock absorption effect, and slow down the undulation of the vehicle body. Specifically, when the rotating shaft 2 rotates forward, that is Figure 5 when the vane rotates clockwise, the oil in the first compression zone 111 will enter the first oil storage chamber 101 through the third damping valve 43 and enter the first return zone 112 through the first one-way valve 31. The oil in the second compression zone 121 will enter the second oil storage chamber 102 through the fourth damping valve 44 and enter the second return zone 122 through the second one-way valve 32; when the rotating shaft 2 rotates reversely, that is Figure 5When the middle blade rotates counterclockwise, the oil in the first oil storage cavity 101 will enter the first compression zone 111 through the third one-way valve 33, the oil in the first return zone 112 will enter the first compression zone 111 through the first damping valve 41, the oil in the second oil storage cavity 102 will enter the second compression zone 121 through the fourth one-way valve 34, and the oil in the second return zone 122 will enter the second compression zone 121 through the second damping valve 42.

[0050] The above structural design of this embodiment is different from the traditional linear shock absorption method. The rotating shaft 2 and the blade can rotate following the vibration of the rear fork 91 of the vehicle body. The direction of the oil resistance on the blade can better conform to the trend of the vehicle body vibration, that is, the buffering and shock absorption effect is closer to the angular swing of the vehicle body. Therefore, the effect of absorbing and alleviating the amplitude will be better, and the shock absorption effect for large-amplitude vibrations will also be more obvious, without the rigid feeling when reaching the limit. Therefore, it can be applied to more types and styles of vehicles. At the same time, the shock absorption housing 13 is in a cylindrical structure. On the one hand, it can effectively increase the space of the internal cavity, increase the reserve of oil, and ensure the maximization of the overall shock absorption effect. On the other hand, when the blade swings and generates heat due to the damping effect of the oil, the heat will be dissipated through the shock absorption housing 13 to complete the conversion of kinetic energy and heat energy. The design of the cylindrical structure can increase the heat dissipation area, prevent problems such as cylinder explosion, and effectively extend the service life of the structure. In addition, the overall size of this embodiment is small, occupies little space, and has little weight, which is convenient for installation. After installation, it can adapt to the structure of the vehicle body itself, be well hidden and protected, not easily damaged by the outside world, and at the same time, it looks more beautiful in appearance and has the advantage of market sales.

[0051] Reference Figure 6 、 7 As shown in FIGS. 8, in order to prevent problems such as cylinder explosion or hard failure of shock absorption, a fifth damping valve 45 and a sixth damping valve 46 are respectively arranged on the two limiting partition plates 17 of this embodiment. The fifth damping valve 45 is unidirectionally connected from the first compression zone 111 to the second return zone 122, and the sixth damping valve 46 is unidirectionally connected from the second compression zone 121 to the first return zone 112. Moreover, the opening pressure required by the fifth damping valve 45 is greater than that of the third damping valve 43, and the opening pressure required by the sixth damping valve 46 is greater than that of the fourth damping valve 44. In this way, when encountering a large vibration amplitude, if the blade rotates too fast and causes excessive pressure in the first compression zone 111 and the second compression zone 121, the fifth damping valve 45 and the sixth damping valve 46 can be temporarily opened at this time to relieve the pressure of the oil flow, thereby avoiding problems such as cylinder explosion and hard failure of shock absorption.

[0052] Reference Figure 5 、 6, as shown in Figures 7 and 8, in order to assist the first oil-pressing vane 21 and the second oil-pressing vane 22 in buffering and shock absorption, an elastic mechanism 5 is further provided in the first compression chamber 11 and the second compression chamber 12. The elastic mechanism 5 can form a buffer when the first oil-pressing vane 21 and the second oil-pressing vane 22 swing. Specifically, the elastic mechanism 5 is composed of an arc-shaped guide rail 50 fixed on two limit partition plates 17 and multiple arc-shaped springs 51 sleeved on the arc-shaped guide rail 50. The first oil-pressing vane 21 and the second oil-pressing vane 22 are hermetically and slidably connected to the arc-shaped guide rail 50 and are connected to the two limit partition plates 17 through multiple arc-shaped springs 51. When the first oil-pressing vane 21 and the second oil-pressing vane 22 swing, they can compress and stretch the arc-shaped springs 51, thereby assisting the first oil-pressing vane 21 and the second oil-pressing vane 22 in buffering and shock absorption, making the overall shock absorption effect better. At the same time, the elastic force of the arc-shaped spring 51 can be selected according to requirements. Therefore, on the basis of the damping effect of the oil on the vane, with the auxiliary buffer of the elastic mechanism, the limit vibration amplitude that can be shock-absorbed will be increased, and thus it can be applied to more vehicle models and more demanding terrains.

[0053] Reference Figure 1 , 2 , as shown in Figures 3 and 11, in order to further avoid the problem of cylinder explosion caused by too strong amplitude in case of emergencies, torsion springs 7 are connected to the centers of the outer sides of the two cover plates 14 in this embodiment, and the other ends of the torsion springs 7 are connected to the inner sides of the rear fork 91 of the vehicle body. In this way, when the rear fork 91 vibrates, it can also improve the overall shock absorption effect, relieve the pressure of the internal damping shock absorption of the shock absorber, and avoid the problem of cylinder explosion caused by too strong amplitude in case of emergencies.

[0054] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above specific embodiments have further detailed the technical problems solved, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel shock absorption structure, characterized in that: It includes a shock absorber main body (1) and a rotating shaft (2) rotatably connected to the center of the shock absorber main body (1). The interior of the shock absorber main body (1) is divided into a first oil storage cavity (101), a second oil storage cavity (102), a first compression cavity (11), and a second compression cavity (12). On both sides of the rotating shaft (2), there are respectively a first oil pressing blade (21) located in the first compression cavity (11) and a second oil pressing blade (22) located in the second compression cavity (12). Nitrogen and oil are introduced into both the first oil storage cavity (101) and the second oil storage cavity (102), and oil is injected into both the first compression cavity (11) and the second compression cavity (12). The first oil pressing blade (21) divides the first compression cavity (11) into a first compression area (111) and a first return area (112), and the second oil pressing blade (22) divides the second compression cavity (12) into a second compression area (121) and a second return area (122). An elastic mechanism (5) is also provided on the first oil pressing blade (21) and the second oil pressing blade (22). When the rotating shaft (2) rotates, the first oil pressing blade (21) and the second oil pressing blade (22) can swing respectively in the first compression cavity (11) and the second compression cavity (12) to squeeze the oil. When the rotating shaft (2) rotates forward, the oil in the first compression area (111) can enter the first oil storage cavity (101) and the first return area (112), and the oil in the second compression area (121) can enter the second oil storage cavity (102) and the second return area (122). When the rotating shaft rotates in reverse, the oil in the first oil storage cavity (101) and the first return area (112) can enter the first compression area (111), and the oil in the second oil storage cavity (102) and the second return area (122) can enter the second compression area (121). The elastic mechanism (5) can form a buffer when the first oil pressing blade (21) and the second oil pressing blade (22) swing. The shock absorber main body (1) includes a cylindrical shock absorber housing (13) and two cover plates (14) provided on both sides and forming a closed space with the shock absorber housing (13). The middle diameter of the rotating shaft (2) is larger than that of both ends and is formed with two steps (200). The two cover plates (14) are closely attached to the step surfaces and are rotatably connected to both ends of the rotating shaft (2). An annular partition plate (15) is arranged inside the shock absorber housing (13) and divides the internal space of the shock absorber housing (13) into an inner ring space and an outer ring space. The two cover plates (14) are respectively closely attached to both end faces of the annular partition plate (15) to form a seal. The annular partition plate (15) is fixed inside the shock absorber housing (13) by two baffle plates (16), and the two baffle plates (16) divide the outer ring space into a first oil storage cavity (101) and a second oil storage cavity (102). Two arc-shaped limiting partition plates (17) are formed on the inner wall of the annular partition plate (15). The middle part of the rotating shaft (2) is rotatably installed between the two limiting partition plates (17), and the two limiting partition plates (17) and the rotating shaft (2) divide the inner ring space into a first compression cavity (11) and a second compression cavity (12). The first oil-pressing vane (21) and the second oil-pressing vane (22) are both arc-shaped, and the two are arranged in an S shape as a whole. The edges of the first oil-pressing vane (21) and the second oil-pressing vane (22) are hermetically fitted to the inner wall of the annular partition plate (15).

2. The novel shock absorption structure according to claim 1, characterized in that: A first one-way valve (31) and a first damping valve (41) are arranged on the first oil-pressing vane (21), a second one-way valve (32) and a second damping valve (42) are arranged on the second oil-pressing vane (22), and the first compression zone (111) and the first oil storage cavity (101) are communicated through a third one-way valve (33) and a third damping valve (43), and the second compression zone (121) and the second oil storage cavity (102) are communicated through a fourth one-way valve (34) and a fourth damping valve (44); When the rotating shaft (2) rotates forward, the oil in the first compression zone (111) can enter the first oil storage cavity (101) through the third damping valve (43) and enter the first return zone (112) through the first one-way valve (31). The oil in the second compression zone (121) can enter the second oil storage cavity (102) through the fourth damping valve (44) and enter the second return zone (122) through the second one-way valve (32); when the rotating shaft rotates reversely, the oil in the first oil storage cavity (101) can enter the first compression zone (111) through the third one-way valve (33), the oil in the first return zone (112) can enter the first compression zone (111) through the first damping valve (41), the oil in the second oil storage cavity (102) can enter the second compression zone (121) through the fourth one-way valve (34), and the oil in the second return zone (122) can enter the second compression zone (121) through the second damping valve (42).

3. A novel shock-absorbing structure according to claim 1, characterized in that: On both sides of the shock-absorbing housing (13), there are respectively a first air injection hole (131) communicating with the first oil storage cavity (101) and a second air injection hole (132) communicating with the second oil storage cavity (102). On both of the two cover plates (14), there are respectively a first oil injection hole (141) communicating with the first compression cavity (11) and a second oil injection hole (142) communicating with the second compression cavity (12).

4. A novel shock-absorbing structure according to claim 1, characterized in that: A fifth damping valve (45) and a sixth damping valve (46) are respectively arranged on the two limiting partition plates (17). The fifth damping valve (45) unidirectionally communicates the first compression zone (111) to the second return zone (122), and the sixth damping valve (46) unidirectionally communicates the second compression zone (121) to the first return zone (112). The opening pressure required for the fifth damping valve (45) is greater than that of the third damping valve (43), and the opening pressure required for the sixth damping valve (46) is greater than that of the fourth damping valve (44).

5. A novel shock absorption structure according to claim 1, characterized in that: The elastic mechanism (5) includes an arc-shaped guide rail (50) arranged on two limit partition plates (17) and multiple arc-shaped springs (51) sleeved on the arc-shaped guide rail (50). The first oil pressing blade (21) and the second oil pressing blade (22) are hermetically and slidably connected to the arc-shaped guide rail (50) and are connected to the two limit partition plates (17) through the multiple arc-shaped springs (51). When the first oil pressing blade (21) and the second oil pressing blade (22) swing, they can compress and stretch the arc-shaped springs (51).

6. A novel shock absorption structure according to claim 1, characterized in that: Ring seats (143) are arranged at the centers on the outer sides of the two cover plates (14). A bearing (6) is installed in each ring seat (143). The inner rings of the two bearings (6) are respectively installed at both ends of the rotating shaft (2). A bearing cover (60) is further arranged on the outer end face of the ring seat (143).

7. A novel shock-absorbing structure according to claim 1, characterized in that: Torsion springs (7) are arranged at the centers on the outer sides of the two cover plates (14). The other ends of the torsion springs (7) are used to connect to the rear fork of the vehicle body.

8. A novel shock-absorbing structure according to claim 1, characterized in that: Bolts (8) are assembled at both ends of the rotating shaft (2). The bolts (8) are used to connect to the rear fork of the vehicle body. An ear seat (133) is arranged at the bottom of the shock absorber main body (1). The ear seat (133) is used to connect to the vehicle frame.

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