Check ring, driving system and vehicle

Abstract

The invention discloses a check ring, a driving system and a vehicle, solves the technical problem that an existing check ring is easy to fall off when a shaft rotates at a high speed, does not need an additional tool during assembly, can be quickly mounted, and can prevent the check ring from deforming. The check ring comprises a check ring body, a first lock pin, a second lock pin and a lock piece. The check ring body comprises a first end and a second end. The first lock pin is installed at the first end, and the second lock pin is installed at the second end. The lock piece comprises a lock piece body and a check block connected to the lock piece body. The lock piece body is in running fit with the first lock pin so that the lock piece can be switched between the first position and the second position. When the locking piece is located at the first position, the check block abuts against the side, away from the first locking pin, of the second locking pin. According to the check ring disclosed by the invention, the first end and the second end of the check ring body are limited through the locking piece, so that the check ring body is still tightly hooped on the shaft when rotating at a high speed along with the shaft and cannot fall off.

Description

Technical Field

[0001] The present application belongs to the technical field of retaining rings, and in particular relates to a retaining ring, a drive system and a vehicle. Background Art

[0002] Drive systems usually use retaining rings to limit the axial movement of parts (such as bearings, gear rings, etc.).

[0003] With the development of new energy vehicles, the speed of the drive system continues to increase. The current maximum speed of the drive motor shaft has exceeded 20,000r / min. Ordinary retaining rings can hardly meet the use requirements of high-speed shafts. When the high-speed shaft rotates, ordinary retaining rings are at risk of falling off. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a retaining ring, a drive system and a vehicle to ensure that the retaining ring can be stably clamped on the shaft or pressed against the hole, thereby ensuring that the parts on the shaft or in the hole will not be misplaced or fall off, thereby providing guarantee for the normal operation of the drive system and the vehicle.

[0005] The technical solution adopted to achieve the purpose of this application is that, in the first aspect of this application, the present invention discloses a retaining ring, comprising:

[0006] A retaining ring body, comprising a retaining ring portion and a first end and a second end connected to the retaining ring portion;

[0007] A first locking pin, mounted on a first end of the retaining ring body;

[0008] A second locking pin is mounted on the second end of the retaining ring body;

[0009] A lock, comprising a lock body and a stopper connected to the lock body;

[0010] Wherein, the lock body and the first lock pin are rotatably cooperated to switch the lock between a first position and a second position, and when the lock is in the first position, the stop block abuts against a side of the second lock pin facing away from the first lock pin; when the lock is in the second position, the stop block abuts against a side of the second lock pin close to the first lock pin.

[0011] In some embodiments, the block is located in the middle of the lock body, and the lock body and the block located on both sides of the block respectively form a first limiting groove and a second limiting groove, and when the lock is in the first position, the second lock pin is located in the first limiting groove, and when the lock is in the second position, the second lock pin is located in the second limiting groove.

[0012] In some embodiments, a first elastic member is further included. A first end of the first elastic member acts on the locking member, and a second end of the first elastic member acts on the first locking pin or the retaining ring body to apply a force to the locking member to rotate towards the second locking pin.

[0013] In some embodiments, a first inclined surface is provided at an end of the blocking block facing away from the locking member body, and the first inclined surface is located on a side of the blocking block facing the first locking pin; and / or

[0014] A second inclined surface is provided at an end of the blocking block facing away from the locking member body, and the second inclined surface is located on a side of the blocking block facing away from the first locking pin.

[0015] In some embodiments, a card slot is provided on a side of the blocking block facing the first locking pin. The retaining ring further includes a plug-in block, and the plug-in block is slidably connected to the second locking pin; when the locking member is in the first position, the plug-in block is inserted into the card slot.

[0016] In some embodiments, a second elastic member is further included. Two ends of the second elastic member act on the plug-in block and the second locking pin respectively, and the second elastic member is used to make the plug-in block tend to move in a direction away from the first locking pin.

[0017] In some embodiments, both the first end and the second end of the retaining ring body protrude outward or inward relative to the retaining ring portion.

[0018] In some embodiments, the retaining ring body further includes a counterweight portion that protrudes outward or inward relative to the retaining ring portion, and the counterweight portion is circumferentially spaced from the first end and the second end along the retaining ring portion.

[0019] The technical solution adopted to achieve the purpose of the present application is that, in the second aspect of the present application, the present invention further discloses a drive system, which includes a driving element and a power input shaft assembly connected to an output shaft of the driving element; the driving element is shaft-connected to the power input shaft assembly; the power input shaft assembly is provided with at least one retaining ring as described in the first aspect above.

[0020] The technical solution adopted to achieve the purpose of the present application is that, in the third aspect of the present application, the present invention further discloses a vehicle, which includes the drive system and / or the retaining ring as described in the second aspect above.

[0021] It can be known from the above technical scheme that the retaining ring disclosed in the present application includes a retaining ring body, a first locking pin, a second locking pin and a locking element. The retaining ring body includes a retaining ring portion and a first end and a second end connected to the retaining ring portion. The first locking pin is installed at the first end of the retaining ring body. The second locking pin is installed at the second end of the retaining ring body. The locking element includes a locking element body and a block connected to the locking element body. The locking element body and the first locking pin are rotatably matched to switch the locking element between a first position and a second position. When the locking element is in the first position, the block abuts against a side of the second locking pin that is away from the first locking pin; when the locking element is in the second position, the block abuts against a side of the second locking pin that is close to the first locking pin.

[0022] The retaining ring disclosed in the present application can limit the first end and the second end of the retaining ring body through a locking member, so that they cannot move relatively, thereby maintaining the retaining ring body in a locked state, ensuring that the tightness of the connection between the retaining ring body and the shaft or hole will not change when rotating at high speed, that is, the retaining ring body is still clamped to the shaft or pressed against the hole when rotating at high speed with the shaft or hole, and will not be displaced or fall off, thereby avoiding the movement of the position of the parts on the assembly or in the hole, and further providing guarantee for the normal operation of the drive system. In addition, since no additional tools or tooling such as retaining ring pliers are required during assembly, it can be avoided that the retaining ring elasticity fails due to permanent deformation caused by excessive stretching when workers use tools such as retaining ring pliers to assemble, thereby improving quality stability, and can also achieve rapid assembly and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] Figure 1 It is a schematic diagram of the structure of the retaining ring in the first position in one or more embodiments of the present application;

[0025] Figure 2 It is a schematic diagram of the structure of the retaining ring in the second position in one or more embodiments of the present application;

[0026] Figure 3 for Figure 1 and Figure 2 Schematic diagram of the locking element of the middle retaining ring;

[0027] Figure 4 A schematic diagram of a retaining ring in a first position in one or more embodiments of the present application;

[0028] Figure 5 Schematic diagram of the retaining ring in the second position in one or more embodiments of the present application.

[0029] Description of reference numerals:

[0030] 1000 - retaining ring, 1000a - shaft retaining ring, 1000b - hole retaining ring, 100 - retaining ring body, 110 - retaining ring part, 120 - first end, 130 - second end, 200 - first locking pin, 300 - second locking pin, 400 - locking member, 410 - locking member body, 420 - retaining block, 421 - card slot, 422 - first inclined surface, 423 - second inclined surface, 430 - first limiting groove, 440 - second limiting groove, 500 - first elastic member, 600 - counterweight part, 700 - insertion block. Detailed implementation manners

[0031] In order to enable those skilled in the art in the technical field to which the present application belongs to more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0032] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0033] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0034] The conventional retaining ring used in the drive system of the related art has an opening structure. When the shaft rotates at a high speed, the opening of the retaining ring will expand due to the centrifugal force. The higher the rotation speed, the higher the probability of the retaining ring expanding. As the rotation speed increases, the retaining ring may come out of the retaining ring groove, resulting in the failure of the entire electric drive. If the retaining ring comes out of the retaining ring groove, it will cause the bench to burn out.

[0035] For this reason, the embodiments of the present invention disclose a retaining ring, which can solve to a certain extent the technical problem that the existing retaining ring is prone to fall off when the shaft rotates at a high speed, so as to ensure that the retaining ring is still stably connected to the shaft when rotating at a high speed with the shaft, providing guarantee for the continuous normal operation of the drive system.

[0036] The technical solutions of the present application will be introduced in detail through specific embodiments below:

[0037] See also Figure 1 , Figure 2 and Figure 3 In the first aspect of the present application, a retaining ring 1000 is provided, which includes a retaining ring body 100, a first locking pin 200, a second locking pin 300 and a locking element 400. The retaining ring body 100 includes a retaining ring portion 110 and a first end 120 and a second end 130 connected to the retaining ring portion 110. The first locking pin 200 is installed at the first end 120 of the retaining ring body 100. The second locking pin 300 is installed at the second end 130 of the retaining ring body 100. The locking element 400 includes a locking element body 410 and a block 420 connected to the locking element body 410. The locking element body 410 is rotatably matched with the first locking pin 200 to switch the locking element 400 between the first position and the second position. When the lock element 400 is in the first position, the stopper 420 abuts against the side of the second lock pin 300 away from the first lock pin 200 ; when the lock element 400 is in the second position, the stopper 420 abuts against the side of the second lock pin 300 close to the first lock pin 200 .

[0038] The retaining ring 1000 disclosed in the present embodiment can restrict the first end 120 and the second end 130 of the retaining ring body 100 through the locking member 400, so that they cannot move relative to each other, so that when the retaining ring body 100 rotates at a high speed with the shaft or the hole, the tightness of the connection between the retaining ring body 100 and the shaft or the hole will not change, that is, the retaining ring body 100 is still clamped to the shaft or pressed against the hole when it rotates at a high speed with the shaft, thereby avoiding the movement of the position of parts on the assembly or in the hole, thereby providing guarantee for the continuous normal operation of the drive system.

[0039] The retaining ring 1000 disclosed in this embodiment can be used as a shaft retaining ring 1000a or a hole retaining ring 1000b. The shaft retaining ring 1000a is sleeved on the shaft to block components installed on the shaft, such as bearings, gears, etc. The hole retaining ring 1000b is embedded in the hole to block components installed in the hole, such as bearings, gear rings, etc.

[0040] See also Figure 1 and Figure 2, when the retaining ring 1000 is used as a shaft retaining ring 1000a, the first position and the second position of the locking member 400 are respectively: when the locking member 400 is in the first position, the stopper 420 abuts against the side of the second locking pin 300 away from the first locking pin 200. At this time, the first locking pin 200 and the second locking pin 300 are on the same side of the stopper 420, and the force exerted by the stopper 420 on the second locking pin 300 is in the direction of the second locking pin 300 towards the first locking pin 200. This force causes the first end 120 and the second end 130 of the retaining ring body 100 to approach each other, that is, the first end 120 and the second end 130 of the retaining ring body 100 cannot move away from each other, thus realizing the locking of the retaining ring portion 110. At this time, the retaining ring body 100 can form a stable connection with the shaft, restrict the parts on the shaft, and prevent the parts from moving axially. When the locking member 400 is in the second position, the stopper 420 abuts against the side of the second locking pin 300 close to the first locking pin 200. At this time, the first locking pin 200 and the second locking pin 300 are respectively on both sides of the stopper 420, and the force exerted by the stopper 420 on the second locking pin 300 is in the direction of the second locking pin 300 away from the first locking pin 200. This force causes the first end 120 and the second end 130 of the retaining ring body 100 to move away from each other, that is, the first end 120 and the second end 130 of the retaining ring body 100 cannot approach each other, thus realizing the expansion of the retaining ring portion 110. At this time, it is convenient to install the retaining ring body 100 onto the shaft.

[0041] Refer to Figure 4 and Figure 5 , when the retaining ring 1000 is used as a hole retaining ring 1000b, the first position and the second position of the locking member 400 are respectively: when the locking member 400 is in the first position, the stopper 420 abuts against the side of the second locking pin 300 away from the first locking pin 200, and the first end 120 and the second end 130 of the retaining ring body 100 cannot move away from each other. At this time, it is convenient to install the retaining ring body 100 onto the hole. When the locking member 400 is in the second position, the stopper 420 abuts against the side of the second locking pin 300 close to the first locking pin 200, and the first end 120 and the second end 130 of the retaining ring body 100 cannot approach each other. At this time, the retaining ring body 100 can be stably installed in the hole, restrict the parts in the hole, and prevent the parts from moving along the axis of the hole.

[0042] In one embodiment, the retaining ring portion 110 is arc-shaped. The outer diameter of the retaining ring portion 110 is slightly larger than the width of the groove of the retaining ring 1000 so that it can be smoothly snapped into the groove of the retaining ring 1000 during assembly. The inner diameter of the retaining ring portion 110 matches the shaft to be fixed, and the central angle corresponding to the retaining ring portion 110 is greater than 180 degrees. The first end 120 and the second end 130 protrude radially outward or inward from the end of the retaining ring portion 110. Mounting holes or mounting grooves are respectively provided on the first end 120 and the second end 130. The first locking pin 200 is installed in the mounting hole or mounting groove of the first end 120, and the second locking pin 300 is installed in the mounting hole or mounting groove of the second end 130.

[0043] In one embodiment, the stopper 420 is located in the middle of the locking member 400. The locking member body 410 on both sides of the stopper 420 and the stopper 420 respectively enclose a first limiting groove 430 and a second limiting groove 440. When the locking member 400 is in the first position, the second locking pin 300 is located in the first limiting groove 430; when the locking member 400 is in the second position, the second locking pin 300 is located in the second limiting groove 440.

[0044] By arranging the stopper 420 in the middle of the locking member body 410 and forming the first limiting groove 430 and the second limiting groove 440 on both sides of the stopper 420, when the locking member 400 is in different locking positions (i.e., the first position and the second position), the second locking pin 300 can respectively fall into the corresponding first limiting groove 430 or second limiting groove 440. This design effectively prevents the locking member 400 from accidentally rotating or displacing under force, thereby significantly enhancing the locking stability. The existence of the first limiting groove 430 and the second limiting groove 440 not only provides a clear positioning for the second locking pin 300, but also increases the contact area between the locking member body 410 and the second locking pin 300, thereby improving the locking reliability. Even under harsh working conditions such as vibration or impact, the stable connection between the locking member body 410 and the second locking pin 300 can be ensured, thereby preventing the retaining ring body 100 from loosening from the shaft.

[0045] In one embodiment, the locking member body 410 is arc-shaped, and the stopper 420 is arranged radially along the locking member body 410.

[0046] In one embodiment, the retaining ring 1000 further includes a first elastic member 500. The first end 120 of the first elastic member 500 acts on the locking member 400, and the second end 130 of the first elastic member 500 acts on the first locking pin 200 or the retaining ring body 100 to apply a rotational force towards the second locking pin 300 to the locking member 400. The first elastic member 500 can be a torsion spring or a spring sheet, etc.

[0047] When the retaining ring 1000 rotates at high speed with the shaft, the locking member 400 will bear a large centrifugal force, which will cause the locking member 400 to rotate outward. After the locking member 400 clamps the first end 120 and the second end 130 of the retaining ring body 100, when the retaining ring body 100 rotates at high speed with the shaft, the first end 120 and the second end 130 of the retaining ring body 100 tend to move away from each other. This tendency causes the extrusion force between the second locking pin 300 on the second end 130 and the stop block 420 to increase, thereby increasing the friction force between the second locking pin 300 and the stop block 420, so that this friction force resists the centrifugal force borne by the locking member 400. And as the centrifugal force borne by the locking member 400 increases, the friction force between the locking member 400 and the second locking pin 300 will also increase.

[0048] However, only relying on this friction force cannot ensure that the locking member 400 will not separate from the second locking pin 300 when the retaining ring 1000 rotates at high speed with the shaft. Therefore, the first elastic member 500 can cooperate with the friction force between the locking member 400 and the second locking pin 300 to reduce the risk of the locking member 400 separating from the second locking pin 300 due to the centrifugal force.

[0049] When the second end 130 of the first elastic member 500 acts on the first locking pin 200, the first locking pin 200 and the locking member 400 are in a rotational fit. The first locking pin 200 and the first end 120 can be connected by a detachable method such as a bolt or a threaded connection. After the first locking pin 200 is connected to the first end 120, generally the position and direction of the first locking pin 200 will no longer change, that is, the first locking pin 200 is fixed after installation.

[0050] When the second end 130 of the first elastic member 500 acts on the retaining ring body 100, the first locking pin 200 and the locking member 400 are in a fixed fit. The first locking pin 200 and the first end 120 are in a rotational fit. When the locking member 400 needs to rotate, generally the locking member 400 and the first locking pin 200 will rotate synchronously relative to the first end 120 of the retaining ring body 100.

[0051] The second locking pin 300 is arranged opposite to the first locking pin 200. The second locking pin 300 and the second end 130 can also be connected by a detachable method such as a bolt or a threaded connection. After the second locking pin 300 is connected to the second end 130, generally the position and direction of the second locking pin 300 will no longer change, that is, the second locking pin 300 is fixed after installation.

[0052] In one embodiment, an installation hole is provided at the first end 120 of the lock body 410, and the first lock pin 200 is connected to the lock body 410 through this installation hole. The width of the first end 120 of the lock body 410 is greater than the width of the second end 130 of the lock body 410. Since the first end 120 of the lock body 410 needs to be connected to the first lock pin 200, the width of the first end 120 of the lock body 410 can be set to be relatively large. The second end 130 of the lock body 410 is a free end, and it only needs to radially restrict the second lock pin 300 when the second lock pin 300 enters the second limiting groove 440. Since it only needs to use the second end 130 of the lock 400 to restrict the lock pin during assembly, and generally the retaining ring 1000 does not apply force to the lock body 410 radially when installing the retaining ring body 100, the width of the second end 130 of the lock body 410 can be appropriately set to be relatively narrow to reduce the overall weight of the retaining ring 1000.

[0053] In one embodiment, a first inclined surface 422 is provided at one end of the block 420 facing away from the lock body 410, and the first inclined surface 422 is located on the side of the block 420 facing the first lock pin 200. And / or a second inclined surface 423 is provided at the other end of the block 420 facing away from the lock body 410, and the second inclined surface 423 is located on the side of the block 420 facing away from the first lock pin 200.

[0054] By providing the first inclined surface 422, it is possible to make it more convenient for the lock body 410 to enter the first position. Through the cooperation of the first inclined surface 422 with the side of the second lock pin 300 facing away from the first lock pin 200, the block 420 can more easily apply a force to the second lock pin 300 to make the second lock pin 300 move towards the first lock pin 200, thereby realizing rapid assembly and locking the retaining ring body 100 on the shaft.

[0055] By providing the second inclined surface 423, it is possible to make it more convenient for the lock body 410 to enter the second position. Through the cooperation of the second inclined surface 423 with the side of the second lock pin 300 facing the first lock pin 200, the block 420 can more easily apply a force to the second lock pin 300 to make the second lock pin 300 move away from the first lock pin 200, thereby realizing quickly expanding the retaining ring body 100 to facilitate the installation of the retaining ring body 100 onto the shaft.

[0056] The shapes and angles of the first inclined surface 422 and the second inclined surface 423 should be carefully designed according to actual application requirements. Relatively gentle first inclined surface 422 and second inclined surface 423 may help reduce friction and resistance during the switching process, but may increase the stroke required for the lock 400 to switch positions. On the contrary, relatively steep first inclined surface 422 and second inclined surface 423 may be able to shorten the switching stroke, but may increase friction and resistance.

[0057] In one embodiment, a clamping groove 421 is provided on one side of the stopper 420 facing the first locking pin 200. The retaining ring 1000 further includes a plug-in block 700 which is slidably connected to the second locking pin 300. When the locking member 400 is in the first position, the plug-in block 700 is plugged into the clamping groove 421.

[0058] The mechanical locking of the locking member 400 can be achieved through the cooperation of the plug-in block 700 and the clamping groove 421, thereby further ensuring that the locking member 400 will not be separated from the second locking pin 300 due to centrifugal force.

[0059] In one embodiment, a sliding groove is provided on the second locking pin 300, and the sliding groove is located on the side of the second locking pin 300 facing away from the first locking pin 200. The plug-in block 700 is arranged in the sliding groove. The plug-in block 700 is in sliding fit, and as the plug-in block 700 slides, a part of the plug-in block 700 can extend out of the sliding groove. When the locking member 400 is in the first position, the part of the plug-in block 700 extending out of the sliding groove can be snapped into the clamping groove 421, thereby achieving the mechanical locking of the locking member 400. When the plug-in block 700 is slid so that the plug-in block 700 completely returns to the sliding groove, the locking member 400 can rotate again along the first locking pin 200.

[0060] Of course, providing the sliding groove on the second locking pin 300 is only one implementation manner of this embodiment. In other implementation manners, it is also possible to provide the sliding groove on the retaining ring body 100.

[0061] In one embodiment, the included angle between the sliding groove and the connecting line between the centers of the second locking pin 300 and the retaining ring 1000 is greater than 90 degrees. In this way, when the retaining ring 1000 rotates with the shaft, the plug-in block 700 will tend to leave the sliding groove and enter the clamping groove 421 under the action of centrifugal force, thereby ensuring the stability of the locking between the plug-in block 700 and the locking member 400. Of course, in other implementation manners, it is also possible to make the sliding groove tangent to the retaining ring body 100 or make the included angle between the sliding groove and the connecting line between the centers of the second locking pin 300 and the retaining ring 1000 less than 90 degrees.

[0062] In one embodiment, the retaining ring 1000 further includes a second elastic member (not shown in the figure), and the second elastic member is installed in the sliding groove. The two ends of the second elastic member act on the plug-in block 700 and the second locking pin 300 respectively, and the second elastic member is used to make the plug-in block 700 tend to move in the direction away from the first locking pin 200. The second elastic member can be a spring or rubber, etc.

[0063] By setting the second elastic member, it can be ensured that when the locking member 400 is switched to the first position, the insertion block 700 can quickly snap into the card slot 421 on the stopper 420, thereby realizing the locking of the locking member 400. The acting force of the second elastic member on the insertion block 700 can make the insertion block 700 more stably cooperate with the card slot 421 on the stopper 420, thereby enhancing the reliability of locking. The design of the second elastic member helps to prevent accidental unlocking caused by vibration or external force. The second elastic member also plays a certain buffering and shock-absorbing role during the switching process of the locking member 400, reducing the direct impact between the insertion block 700 and the card slot 421 and extending the service life of the locking member 400.

[0064] After the second elastic member acts on the insertion block 700, the insertion block 700 can cooperate with the first inclined surface 422 on the stopper 420. During the process of the locking member being switched to the first position, when the locking member body 410 rotates towards the second locking pin 300, the insertion block 700 can be pushed back into the chute by the cooperation of the first inclined surface 422 and the insertion block 700 against the elastic force of the second elastic member. After the insertion block 700 is aligned with the card slot 421, the insertion block 700 can quickly insert into the card slot 421 under the thrust of the second elastic member.

[0065] Since when the position of the locking member 400 is switched, the moving direction of the stopper 420 is almost perpendicular to the moving direction of the insertion block 700, this may cause the stopper 420 to directly abut against the insertion block 700 and cause jamming. The cooperation of the first inclined surface 422 and the insertion block 700 enables the stopper 420 to push the insertion block 700 back into the chute, thereby avoiding jamming between the end of the stopper 420 and the insertion block 700.

[0066] Refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 In an embodiment, both the first end 120 and the second end 130 of the retaining ring body 100 protrude outward or inward relative to the retaining ring portion 110. When both the first end 120 and the second end 130 protrude outward relative to the retaining ring portion 110, the retaining ring 1000 can be used as a shaft retaining ring 1000a. At this time, the inner wall of the retaining ring portion 110 is clamped to the outer wall of the shaft. When both the first end 120 and the second end 130 protrude inward relative to the retaining ring portion 110, the retaining ring 1000 can be used as a hole retaining ring 1000b. At this time, the outer wall of the retaining ring portion 110 abuts against the inner wall of the hole.

[0067] In an embodiment, the retaining ring body 100 further includes a counterweight portion 600 that protrudes outward or inward relative to the retaining ring portion 110. The counterweight portion 600 is circumferentially spaced from the first end 120 and the second end 130 along the retaining ring portion 110.

[0068] Compatible with the shaft retaining ring 1000a or the hole retaining ring 1000b, when the first end 120 and the second end 130 both protrude outward, the weight portion 600 also protrudes outward in the radial direction of the retaining ring portion 110. When the first end 120 and the second end 130 both protrude inward, the weight portion 600 also protrudes inward in the radial direction of the retaining ring portion 110.

[0069] The counterweight part 600 can be provided with only one or more counterweight parts, and the counterweight part 600 is mainly used to balance the center of gravity of the retaining ring 1000. Since the retaining ring 1000 is provided with a first locking pin 200, a second locking pin 300 and a locking member 400 at its first end 120 and second end 130, these parts will cause the center of gravity of the retaining ring 1000 to shift, and after the retaining ring 1000 is installed on the shaft, it will also affect the shaft, and this impact may have a more serious impact on the shaft rotating at a high speed. After the counterweight part 600 is provided, the center of gravity of the retaining ring 1000 can be adjusted to the center of the circle of the retaining ring part 110, thereby avoiding affecting the shaft.

[0070] The counterweight part 600 is not only used as a configuration, but also as a structural reinforcement to increase the structural strength and rigidity of the retaining ring body 100. In particular, when subjected to a large load or impact, this design helps to improve the durability of the retaining ring 1000. In addition, by providing the counterweight part 600, the dynamic performance of the retaining ring 1000 can also be optimized, including reducing vibration, noise and energy loss during rotation, and improving the overall operating efficiency.

[0071] Through the above embodiments, the present application has the following beneficial effects or advantages: the retaining ring 1000 disclosed in the present application has a simple structure and convenient operation. Through the cooperation of the lock 400 and the retaining ring body 100, the retaining ring body 100 is effectively prevented from slipping out of the retaining ring 1000 groove at a high speed, thereby ensuring that the parts on the shaft or in the hole will not be misplaced or fall off, and improving the reliability and safety of the product. In addition, no additional tooling or tools are required during assembly. Only the lock 400 needs to be turned to tighten the retaining ring body 100 or open the retaining ring body 100, which greatly improves the work efficiency, reduces the labor cost, and provides guarantee for the disassembly and assembly of the retaining ring 1000 and the connection stability after assembly. By using the stopper 420 on the lock 400 to open the first end 130 and the second end 140 of the retaining ring body 100, the opening size of the retaining ring body 100 can be controlled, and the retaining ring elasticity failure caused by excessive opening of the retaining ring by workers using tools such as retaining ring pliers can be avoided, thereby improving the quality stability.

[0072] When assembling the shaft retaining ring 1000a, the retaining ring body 100 is moved to the retaining ring 1000 groove, and then the locking element 400 is moved to make the locking element 400 in the second position. At this time, the retaining ring body 100 can be moved to the bottom of the retaining ring 1000 groove along the axial direction of the shaft. Subsequently, the locking element 400 is rotated in the opposite direction to separate the locking element 400 from the second locking pin 300. After the first end 120 and the second end 130 of the retaining ring body 100 are close to each other, the locking element 400 is rotated toward the second locking pin 300 under the action of the first elastic element 500. At this time, the locking element 400 is in the first position, and the locking element 400 clamps the retaining ring body 100 on the shaft, which can form a restriction on the parts on the shaft.

[0073] When assembling the hole retaining ring 1000b, firstly, the lock 400 is moved to the first position, at which time the retaining ring body 100 can move along the axial direction of the hole. Then, the lock 400 is rotated in the opposite direction to separate the lock 400 from the second lock pin 300. After the first end 120 and the second end 130 of the retaining ring body 100 are separated from each other, the lock 400 is rotated toward the second lock pin 300 under the action of the first elastic member 500, and then a certain pressure is applied to the lock 400 to make the lock 400 enter the second position. At this time, the lock 400 makes the outer wall of the retaining ring body 100 press against the inner wall of the hole, so as to restrict the parts in the hole.

[0074] Based on the same inventive concept, the second embodiment of the present application discloses a drive system, including a drive element and a power input shaft assembly connected to the output shaft of the drive element. The drive element is connected to the power input shaft assembly by shaft transmission; the power input shaft assembly is provided with at least one retaining ring disclosed in any embodiment of the first aspect above.

[0075] Since the rotation speed of the driving element is generally above 20,000 revolutions per minute, the power output shaft assembly is directly connected to the output shaft of the driving element, and therefore, the rotation speed of each shaft in the power output shaft assembly is generally very high. In this case, it is difficult for an ordinary retaining ring to ensure that it is still stably connected to the shaft assembly at this rotation speed. The drive system disclosed in this embodiment can effectively prevent the retaining ring body 100 from detaching from the shaft assembly at high rotation speed by providing a lock 400 to lock the first end 120 and the second end 130 of the retaining ring body 100.

[0076] Among them, the drive system disclosed in this embodiment includes but is not limited to an electric drive system, an engine drive system and a hybrid drive system.

[0077] When the drive system is an electric drive system, the drive element at least includes a drive motor. The power input shaft of the power input shaft assembly is connected to the output shaft of the drive motor. The snap ring body 100 is installed on the power input shaft or in the shaft hole. The snap ring 1000 can be installed on the side of a component within the power input shaft assembly, or the snap ring 1000 can be respectively installed on the sides of multiple components within the power input shaft assembly.

[0078] When the drive system is an engine drive system, the drive element at least includes an engine. The power input shaft of the power input shaft assembly is directly connected to the output shaft of the engine. The snap ring body 100 is installed on the power input shaft or in the shaft hole. The snap ring 1000 can be installed on the side of a component within the power input shaft assembly, or the snap ring 1000 can be respectively installed on the sides of multiple components within the power input shaft assembly.

[0079] When the drive system is a hybrid drive system, the drive element includes a drive motor and an engine. The drive motor and the engine can output power alternatively or output power simultaneously. Corresponding power input shaft assemblies are provided with two, namely a drive motor power input shaft assembly and an engine power input shaft assembly. Among them, the shaft of the drive motor power input shaft assembly is connected to the output shaft of the drive motor, and the shaft of the engine power input shaft assembly is directly connected to the output shaft of the drive motor. The snap ring 1000 is provided in both the drive motor power input shaft assembly and the engine power input shaft assembly.

[0080] The drive system disclosed in this application restricts the first end 120 and the second end 130 of the snap ring 1000, so that the snap ring 1000 can still clamp the shaft during the high-speed rotation of the shaft, thereby ensuring that the parts on the shaft will not be misaligned or fall off, and the shaft assembly can work normally.

[0081] Application example: When a company was developing and designing an electric drive system, since the rotational speed of the power input shaft was relatively fast, the snap ring on it fell off the shaft during high-speed rotation, resulting in misalignment of the parts on the shaft (the snap ring of the gear shift synchronizer), causing the corresponding operations to not be responded in the electric drive system, and further causing the test bench to burn out. Later, when the company installed the snap ring in this application on the shaft and retested, no misalignment of parts occurred.

[0082] Based on the same inventive concept, the third aspect embodiment of this application discloses a vehicle, which includes the drive system of the second aspect and / or the snap ring 1000 of any embodiment of the first aspect above.

[0083] In addition to installing the retaining ring 1000 of the first aspect described above onto the shaft assembly within the drive system, the vehicle disclosed in this application can also install the retaining ring 1000 of the first aspect onto other shaft assemblies that rotate at high speeds, such as the high-speed rotating shaft within an air conditioner compressor, the high-speed rotating shaft of a generator that charges the battery, and the high-speed rotating shaft within a turbocharger, etc.

[0084] By restricting the first end 120 and the second end 130 of the retaining ring 1000, the vehicle disclosed in this application enables the retaining ring 1000 to still be tightly fastened onto the shaft during the high-speed rotation of the shaft, thereby ensuring the normal operation of the shaft assembly.

[0085] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention have been clearly and completely described above in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0086] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings above is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0087] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0088] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0089] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween rather than direct contact. Moreover, a first feature being above, over, and on top of a second feature includes the first feature being directly above and diagonally above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. A first feature being below, under, and beneath a second feature includes the first feature being directly below and diagonally below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0091] Although the preferred embodiments of the present application have been described, additional changes and modifications can be made by those of ordinary skill in the art once they learn the basic inventive concept. Therefore, the appended claims are intended to be construed to cover the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0092] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A retaining ring, characterized in that, Comprising: A retaining ring body, including a retaining ring portion and first and second ends connected to the retaining ring portion; A first locking pin installed at the first end of the retaining ring body; A second locking pin installed at the second end of the retaining ring body; A locking member, including a locking member body and a blocking block connected to the locking member body; Wherein, the locking member body is rotationally engaged with the first locking pin to enable the locking member to switch between a first position and a second position. When the locking member is in the first position, the blocking block abuts against a side of the second locking pin facing away from the first locking pin; When the locking member is in the second position, the blocking block abuts against a side of the second locking pin close to the first locking pin.

2. The retaining ring according to claim 1, characterized in that, The blocking block is located in the middle of the locking member body. The locking member body on both sides of the blocking block and the blocking block respectively enclose a first limiting groove and a second limiting groove. When the locking member is in the first position, the second locking pin is located in the first limiting groove. When the locking member is in the second position, the second locking pin is located in the second limiting groove.

3. The retaining ring according to claim 1, characterized in that, It further includes a first elastic member. The first end of the first elastic member acts on the locking member, and the second end of the first elastic member acts on the first locking pin or the retaining ring body to apply a rotational force towards the second locking pin to the locking member.

4. The retaining ring according to claim 1, characterized in that, One end of the blocking block facing away from the locking member body is provided with a first inclined surface, and the first inclined surface is located on a side of the blocking block facing the first locking pin; and / or The two ends of the blocking block facing away from the locking member body are provided with second inclined surfaces, and the second inclined surfaces are located on a side of the blocking block facing away from the first locking pin.

5. The retaining ring according to any one of claims 1 to 4, characterized in that, A card slot is provided on a side of the blocking block facing the first locking pin. The retaining ring further includes a plug-in block, and the plug-in block is slidably connected to the second locking pin; when the locking member is in the first position, the plug-in block is inserted into the card slot.

6. The retaining ring according to claim 5, characterized in that, It further includes a second elastic member. The two ends of the second elastic member respectively act on the plug-in block and the second locking pin, and the second elastic member is used to make the plug-in block have a tendency to move in a direction away from the first locking pin.

7. The retaining ring according to any one of claims 1 to 4, characterized in that, Both the first end and the second end of the retaining ring body protrude outward or inward relative to the retaining ring portion.

8. The retaining ring according to claim 7, characterized in that, The retaining ring body further includes a weight portion that protrudes outward or inward relative to the retaining ring portion, and the weight portion is circumferentially spaced from the first end and the second end along the retaining ring portion.

9. A drive system, characterized in that, Comprising a driving element and a power input shaft assembly connected to the output shaft of the driving element; the driving element is shaft-connected to the power input shaft assembly; the power input shaft assembly is provided with at least one retaining ring according to any one of claims 1 to 8.

10. A vehicle, characterized in that, Comprising a driving system and / or a retaining ring as claimed in claim 9.

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