Automobile power battery mounting structure

Abstract

The invention relates to the technical field of electric automobiles, in particular to an automobile power battery mounting structure which comprises a fixing frame, the fixing frame is mounted at the bottom end of an automobile, convex edges are arranged on the two opposite sides of the bottom end of the fixing frame, a tray is arranged in an inner cavity of the lower side of the fixing frame, the tray is fixed to the fixing frame through bolts, and a battery pack is arranged in the tray. According to the automobile power battery mounting structure provided by the invention, when the battery pack is normally used, the rollers can prevent the tray and the battery pack from falling off due to looseness of the bolts, when the battery pack is on fire, the battery pack sprays fire downwards, the running state of an automobile can be automatically identified through rolling of the rollers, and when the speed of the automobile is very low, the whole automobile is supported upwards, so that the service life of the automobile is prolonged. The distance between the battery and the ground is increased, the escape time of people in the automobile is prolonged, the situation that the automobile is unstable due to sudden jacking during high-speed running is prevented, friction force is generated between the friction ring and the rotating ring, the braking time of an automobile owner is shortened, and more escape time is gained.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and particularly to an installation structure for an automotive power battery. Background Art

[0002] Most of the power batteries of existing electric vehicles are installed and fixed by fastening bolts. Usually, 12 bolts in six points are used to fix them on the vehicle longitudinal beam. The power battery and the vehicle are rigidly connected. When installing or replacing the battery, the vehicle body is usually lifted first, and then the battery pack is installed from the bottom up through a lifting device.

[0003] However, when the battery pack is manually installed or replaced, the bolts may not be fully fixed or loosened, and accidents are likely to occur after long-term use. In addition, some existing new energy vehicles adopt the technology of inverting the battery cells. This technology can spray downward when the battery catches fire, thereby reducing the harm to people in the vehicle. However, the distance between the bottom of the battery and the ground is usually short, and still some flames will touch the vehicle body through the rebound of the ground during combustion, which will still accelerate the combustion of the vehicle body. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides an installation structure for an automotive power battery.

[0005] The present invention adopts the following technical solutions. An installation structure for an automotive power battery includes a fixing frame, and the fixing frame is installed at the bottom of the vehicle. Convex edges are provided on both opposite sides of the bottom end of the fixing frame. A tray is arranged in the inner cavity below the fixing frame. The tray is bolted to the fixing frame. A battery pack is arranged in the tray. The installation structure further includes:

[0006] A locking mechanism for preventing the tray from falling off, and the locking mechanism is arranged in the tray;

[0007] A jacking mechanism for increasing the distance between the bottom of the battery and the ground, and the jacking mechanism is arranged in the locking mechanism;

[0008] And an automatic triggering mechanism for automatically identifying the running state of the vehicle, and the automatic triggering mechanism is arranged in the locking mechanism.

[0009] As a further description of the above technical solution: The locking mechanism includes rotating shafts rotatably arranged at two opposite ends of the tray. A rotating frame is fixedly connected to the outer wall of the rotating shaft. A torsion spring is fixedly connected between the outer wall of the rotating shaft and the tray. A rotating groove is formed in the tray. A rotating block is rotatably arranged in the rotating groove, and the rotating block is fixedly connected to the outer wall of the rotating shaft. A melting block is arranged inside one end of the rotating groove. A collecting groove is formed below the melting block. A roller is rotatably arranged at one end of the rotating frame. An inclined surface is formed on the roller, and a sliding rod abuts against the inclined surface. The sliding rod is slidably arranged in the rotating frame, and a first spring is fixedly connected between one end of the sliding rod and the rotating frame. One end of the sliding rod away from the inclined surface abuts against an inserting rod, and the inserting rod is movably inserted into the tray. One end of the inserting rod extends to the outside of the tray. A magnet is fixedly connected to the end of the inserting rod extending outside the tray. An iron sheet is arranged on the outer wall of the tray around the inserting rod. A inserting shaft is fixedly connected to one end of the roller close to the inclined surface, and a sliding plate is arranged outside the inserting shaft. The inserting shaft is rotatably arranged in the sliding plate. The sliding plate is horizontally slidably arranged in the rotating frame, and a second spring is fixedly connected between one end of the sliding plate and the rotating frame.

[0010] As a further description of the above technical solution: The jacking mechanism includes a first heat conduction line, and one end of the first heat conduction line is connected to the outer wall of the tray. The other end of the first heat conduction line is arranged inside the rotating frame. A protruding frame is slidably arranged up and down at the top of the rotating frame. An expanding block abuts against the lower side of the protruding frame, and the expanding block is placed in the rotating frame. The side wall of the expanding block abuts against a second heat conduction line, and the second heat conduction line is arranged in the rotating frame. A heat conduction threaded block is arranged on one side of the first heat conduction line and the second heat conduction line. The heat conduction threaded block is horizontally slidably arranged in the rotating frame. A threaded rod is threadedly connected inside the heat conduction threaded block, and the threaded rod is rotatably arranged in the rotating frame.

[0011] As a further description of the above technical solution: The automatic triggering mechanism includes a placing groove formed in the rotating frame. A non-Newtonian fluid is placed in the placing groove. A rotating ring is rotatably arranged in the rotating frame, and one end of the rotating ring close to the roller abuts against the inner wall of the rotating frame. A friction ring abuts against the inner side of the rotating ring. A rotating rod is fixedly connected inside the friction ring. The inserting shaft is movably inserted into the rotating rod. One end of the rotating ring away from the roller is fixedly connected to the threaded rod.

[0012] As a further description of the above technical solution: The rotating frame has weak heat conductivity, and the tray has strong heat conductivity.

[0013] As a further description of the above technical solution: A rubber pad is arranged on the outer wall of the protruding frame.

[0014] As a further description of the above technical solution: The expanding block is made of a material that expands rapidly when heated. There are two heat conduction threaded blocks, and the two heat conduction threaded blocks are fixedly connected to each other. One end of the first heat conduction line and the second heat conduction line is located between the two heat conduction threaded blocks.

[0015] As a further description of the above technical solution: when the non-Newtonian fluid becomes viscous, the adhesion between the inner wall of the placement groove and the non-Newtonian fluid is greater than the friction between the friction ring and the rotating ring.

[0016] The present invention provides an automotive power battery installation structure through improvement, which has the following improvements and advantages compared with the prior art:

[0017] First, when the battery pack catches fire, the battery pack sprays fire downwards, and the rolling of the roller can automatically identify the running status of the car, prolong the escape time of the people in the car, and prevent the car from being unstable when it is suddenly lifted up at high speed;

[0018] Second, when the battery pack catches fire and the vehicle speed drops to a very low level, the expansion block expands rapidly when it encounters heat, thereby pushing out the extension frame. The extension frame extends downward, causing the vehicle body to move upward, thereby increasing the distance between the battery and the ground, preventing part of the flame from rebounding from the ground and touching the vehicle body, accelerating the burning of the vehicle body;

[0019] Third: When the roller rolls, friction will be generated between the friction ring and the rotating ring, which can shorten the braking time of the car owner and buy more time for the people in the car to escape;

[0020] To sum up, when the battery pack is in normal use, the roller can prevent the bolts from loosening and causing the tray and battery pack to fall off. When the battery pack catches fire, the battery pack will spray fire downwards, and the rolling of the roller can automatically identify the running status of the car. When the car speed is very low, the entire car will be propped up, increasing the distance between the battery and the ground, extending the escape time for people in the car, and preventing the car from being suddenly lifted up when running at high speed, making the car unstable. When the roller rolls, friction will be generated between the friction ring and the swivel, which can shorten the owner's braking time and gain more escape time for people in the car. When the battery pack burns, the whole device is in a power-off state, so the mechanical structure of the device can better ensure timely triggering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 A schematic diagram of a vehicle power battery installation structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a convex edge provided by an embodiment of the present invention;

[0024] Figure 3 A three-dimensional cross-sectional view of a fixing frame provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a locking mechanism provided by an embodiment of the present invention;

[0026] Figure 5 A partial cross-sectional view of the tray provided by the embodiment of the present invention;

[0027] Figure 6 A schematic structural view of the heat-conducting threaded block provided by the embodiment of the present invention;

[0028] Figure 7 A three-dimensional cross-sectional view of the rotating frame provided by the embodiment of the present invention;

[0029] Figure 8 A schematic structural view of the rotating ring provided by the embodiment of the present invention;

[0030] Figure 9 is Figure 5 An enlarged view of part A in

[0031] In the figure: 1, fixed frame; 101, convex edge; 2, tray; 3, locking mechanism; 31, rotating frame; 32, roller; 33, rotating shaft; 34, sliding rod; 35, inserting rod; 36, inclined surface; 37, first spring; 38, sliding plate; 39, second spring; 310, torsion spring; 311, rotating groove; 312, melting block; 313, rotating block; 314, collecting groove; 4, battery pack; 5, jacking mechanism; 51, first heat conduction line; 52, extending frame; 53, expanding block; 54, second heat conduction line; 55, heat-conducting threaded block; 56, threaded rod; 6, automatic triggering mechanism; 61, placing groove; 62, rotating ring; 63, inserting shaft; 64, rotating rod; 65, friction ring. Detailed implementation manners

[0032] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0033] Please refer to Figure 1 - Figure 9 , the embodiment of the present invention provides a technical solution: an installation structure for an automotive power battery, including a fixed frame 1, and the fixed frame 1 is installed at the bottom end of the vehicle. Convex edges 101 are provided on both opposite sides of the bottom end of the fixed frame 1. A tray 2 is provided in the inner cavity below the fixed frame 1. The tray 2 is bolted to the fixed frame 1. A battery pack 4 is provided in the tray 2. Further included are:

[0034] A locking mechanism 3 for preventing the tray 2 from falling off, and the locking mechanism 3 is arranged in the tray 2;

[0035] A jacking mechanism 5 for increasing the distance between the bottom end of the battery and the ground, and the jacking mechanism 5 is arranged in the locking mechanism 3;

[0036] And an automatic trigger mechanism 6 is used for automatically identifying the running state of the vehicle, and the automatic trigger mechanism 6 is arranged in the locking mechanism 3.

[0037] Specifically, when the battery pack 4 is in normal use, the roller 32 can prevent the bolts from loosening, which may cause the tray 2 and the battery pack 4 to fall off. When the battery pack 4 catches fire, the battery pack 4 will spray fire downwards. The rolling of the roller 32 can automatically identify the running status of the car. When the speed of the car is very low, the entire car will be propped up, increasing the distance between the battery and the ground, extending the escape time for people in the car, and preventing the car from being suddenly lifted up when running at high speed, making it unstable. When the roller 32 rolls, friction will be generated between the friction ring 65 and the swivel 62, which can shorten the braking time of the car owner and gain more escape time for people in the car.

[0038] Furthermore, when the battery pack 4 is burning, the entire device is in a power-off state, so the device adopts a mechanical structure, which can better ensure timely triggering.

[0039] In another embodiment provided by the present invention, the locking mechanism 3 includes a rotating shaft 33 rotatably arranged at two opposite ends of the tray 2, the outer wall of the rotating shaft 33 is fixedly connected to the rotating frame 31, a torsion spring 310 is fixedly connected between the outer wall of the rotating shaft 33 and the tray 2, a rotating groove 311 is opened in the tray 2, a rotating block 313 is rotatably arranged in the rotating groove 311, and the rotating block 313 is fixedly connected to the outer wall of the rotating shaft 33, a melting block 312 is arranged inside one end of the rotating groove 311, and a collecting groove 314 is opened on the lower side of the melting block 312, a roller 32 is rotatably arranged at one end of the rotating frame 31, a slope 36 is opened on the roller 32, and a sliding rod 34 is abutted on the slope 36, and the sliding rod 34 is slidably arranged on the rotating frame 31 The tray 2 is provided with a plurality of springs 37 and 39, and the plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2. The plurality of springs 37 are provided on the tray 2.

[0040] The heat conductivity of the rotating rack 31 is weak, and the heat conductivity of the tray 2 is strong.

[0041] Specifically, the slide bar 34 can squeeze the roller 32 outward from the rotating frame 31 again, so that the roller 32 can be located directly above the convex edge 101, which can prevent the tray 2 from falling when the tray 2 is installed, thereby improving safety. When the peripheral side of the tray 2 is fixed to the fixing frame 1 by bolts, the roller 32 can prevent the bolts from loosening, causing the tray 2 and the battery pack 4 to fall off.

[0042] When the battery pack 4 catches fire, the battery pack 4 sprays fire downward. The rolling of the roller 32 can automatically identify the running state of the vehicle. When the vehicle speed is very low, the whole vehicle is lifted upward to increase the distance between the battery and the ground, extend the escape time of the passengers in the vehicle, and prevent the vehicle from being unstable when it is suddenly lifted during high-speed operation.

[0043] In another embodiment provided by the present invention, the lifting mechanism 5 includes a heat conduction wire 51. One end of the heat conduction wire 51 is connected to the outer wall of the tray 2, and the other end of the heat conduction wire 51 is arranged inside the rotating frame 31. An extending frame 52 is slidably arranged up and down at the top of the rotating frame 31. A swelling block 53 abuts against the lower side of the extending frame 52, and the swelling block 53 is placed inside the rotating frame 31. A side wall of the swelling block 53 abuts against a heat conduction wire 54, and the heat conduction wire 54 is arranged inside the rotating frame 31. A heat conduction threaded block 55 is arranged on one side of the heat conduction wire 51 and the heat conduction wire 54. The heat conduction threaded block 55 is slidably arranged horizontally inside the rotating frame 31. A threaded rod 56 is connected to the heat conduction threaded block 55 by internal threads, and the threaded rod 56 is rotatably arranged inside the rotating frame 31.

[0044] The automatic trigger mechanism 6 includes a placement groove 61 opened inside the rotating frame 31. A non-Newtonian fluid is placed inside the placement groove 61. A rotating ring 62 is rotatably arranged inside the rotating frame 31, and one end of the rotating ring 62 close to the roller 32 abuts against the inner wall of the rotating frame 31. A friction ring 65 abuts against the inner side of the rotating ring 62. A rotating rod 64 is fixedly connected inside the friction ring 65. A plug shaft 63 is movably inserted inside the rotating rod 64. The end of the rotating ring 62 away from the roller 32 is fixedly connected to the threaded rod 56.

[0045] A rubber pad is arranged on the outer wall of the extending frame 52.

[0046] The swelling block 53 is made of a material that expands rapidly when heated. There are two heat conduction threaded blocks 55, and the two heat conduction threaded blocks 55 are fixedly connected to each other. One end of the heat conduction wire 51 and the heat conduction wire 54 is located between the two heat conduction threaded blocks 55.

[0047] When the non-Newtonian fluid becomes viscous, the adhesion force between the inner wall of the placement groove 61 and the non-Newtonian fluid is greater than the frictional force between the friction ring 65 and the rotating ring 62.

[0048] Specifically, after the battery pack 4 catches fire, when the vehicle speed drops to a very low level, the swelling block 53 expands rapidly when heated, so that the extending frame 52 can be pushed out. When the extending frame 52 extends downward, the vehicle body will move upward, so as to increase the distance between the battery and the ground, and prevent some flames from rebounding through the ground and touching the vehicle body during combustion, accelerating the combustion of the vehicle body.

[0049] Working principle: When using this structure, first pull the insertion rod 35 outwards, so that the sliding rod 34 can no longer press the roller 32, and the second spring 39 pulls the roller 32 inwards, so that the upper end of the tray 2 can be embedded in the fixing frame 1. Then release the insertion rod 35, and the end of the insertion rod 35 extending outside the tray 2 is adsorbed on the outer wall of the tray 2, so that the sliding rod 34 can press the roller 32 outwards again towards the outside of the rotating frame 31, so that the roller 32 can be located directly above the convex edge 101, which can prevent the tray 2 from falling when installing the tray 2 and improve safety. When the periphery of the tray 2 is fixed on the fixing frame 1 by bolts, the roller 32 can prevent the bolts from loosening and causing the tray 2 and the battery pack 4 to fall off;

[0050] When the battery pack 4 catches fire, the temperature on the tray 2 will be very high. At this time, the melting block 312 will melt when heated, and the melted melting block 312 will flow into the collection groove 314. Then the rotating block 313 and the rotating shaft 33 will rotate under the action of the torsion spring 310, so that the top end of the rotating frame 31 rotates to the lower side. When the rotating frame 31 rotates, the sliding rod 34 will be disengaged from the insertion rod 35, so that the inclined plane 36 is pulled inwards by the second spring 39, so that the roller 32 will not be blocked by the convex edge 101. Then the outer wall of the roller 32 can contact the road surface, which is convenient for triggering the automatic triggering mechanism 6 and the jacking mechanism 5 later;

[0051] If the vehicle is in motion and the battery pack 4 catches fire, at this time the roller 32 will keep rotating rapidly. At this time, the roller 32 will drive the insertion shaft 63 to rotate, and the insertion shaft 63 drives the rotating rod 64 and the friction ring 65 to rotate. However, at this time the friction ring 65 rotates rapidly. If it drives the rotating ring 62 to rotate, it will cause the rotating ring 62 to stir rapidly in the non-Newtonian fluid, so the viscosity of the rotating ring 62 will increase, and the adhesion between the inner wall of the placing groove 61 and the rotating ring 62 will increase. Since the adhesion between the inner wall of the placing groove 61 and the non-Newtonian fluid is greater than the friction force between the friction ring 65 and the rotating ring 62, the rotating ring 62 will not rotate at this time. When the vehicle speed drops very low, the friction ring 65 will drive the rotating ring 62 to rotate slowly. At this time, the viscosity of the non-Newtonian fluid is very low, so the rotating ring 62 will rotate. The rotating ring 62 drives the threaded rod 56 to rotate, and the threaded rod 56 drives the heat-conducting threaded block 55 to move, so that both ends of the heat-conducting threaded block 55 can connect the first heat-conducting wire 51 and the second heat-conducting wire 54. Furthermore, the temperature on the tray 2 will be transmitted to the expansion block 53. The expansion block 53 expands rapidly when heated, so that the protruding frame 52 can be pushed out. The protruding frame 52 extends downwards, which will cause the vehicle body to move upwards, so that the distance between the battery and the ground can be increased, preventing some flames from rebounding through the ground and touching the vehicle body during combustion, accelerating the combustion of the vehicle body;

[0052] Two heat-conducting threaded blocks 55 are provided to connect the first heat-conducting wire 51 and the second heat-conducting wire 54 when the vehicle travels forward and backward.

[0053] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An installation structure for an automotive power battery, comprising a fixing frame (1), and the fixing frame (1) is installed at the bottom end of the vehicle. Convex edges (101) are provided on both opposite sides of the bottom end of the fixing frame (1). A tray (2) is arranged in the inner cavity below the fixing frame (1). The tray (2) is bolted to the fixing frame (1). A battery pack (4) is arranged in the tray (2), characterized in that, It further includes: a locking mechanism (3) for preventing the tray (2) from falling off, and the locking mechanism (3) is arranged inside the tray (2); a jacking mechanism (5) for increasing the distance between the bottom end of the battery and the ground, and the jacking mechanism (5) is arranged inside the locking mechanism (3); and an automatic triggering mechanism (6) for automatically identifying the running state of the vehicle, and the automatic triggering mechanism (6) is arranged inside the locking mechanism (3).

2. The installation structure of an automotive power battery according to claim 1, characterized in that: The locking mechanism (3) includes a rotating shaft (33) rotatably arranged at two opposite ends of the tray (2). A rotating frame (31) is fixedly connected to the outer wall of the rotating shaft (33). A torsion spring (310) is fixedly connected between the outer wall of the rotating shaft (33) and the tray (2). A rotating groove (311) is formed inside the tray (2). A rotating block (313) is rotatably arranged inside the rotating groove (311), and the rotating block (313) is fixedly connected to the outer wall of the rotating shaft (33). A melting block (312) is arranged inside one end of the rotating groove (311). A collecting groove (314) is formed below the melting block (312). A roller (32) is rotatably arranged at one end of the rotating frame (31). An inclined surface (36) is formed on the roller (32), and a sliding rod (34) abuts against the inclined surface (36). The sliding rod (34) is slidably arranged inside the rotating frame (31), and a first spring (37) is fixedly connected between one end of the sliding rod (34) and the rotating frame (31). The end of the sliding rod (34) away from the inclined surface (36) abuts against an inserting rod (35), and the inserting rod (35) is movably inserted into the tray (2). One end of the inserting rod (35) extends to the outside of the tray (2). A magnet is fixedly connected to the end of the inserting rod (35) extending outside the tray (2). An iron sheet is arranged on the outer wall of the tray (2) around the inserting rod (35). A inserting shaft (63) is fixedly connected to one end of the roller (32) close to the inclined surface (36), and a sliding plate (38) is arranged outside the inserting shaft (63). The inserting shaft (63) is rotatably arranged inside the sliding plate (38). The sliding plate (38) is horizontally slidably arranged inside the rotating frame (31), and a second spring (39) is fixedly connected between one end of the sliding plate (38) and the rotating frame (31).

3. The installation structure of an automotive power battery according to claim 2, characterized in that: The jacking mechanism (5) includes a first heat conducting wire (51), and one end of the first heat conducting wire (51) is connected to the outer wall of the tray (2). The other end of the first heat conducting wire (51) is arranged inside the rotating frame (31). A protruding frame (52) is slidably arranged up and down at the top end of the rotating frame (31). An expanding block (53) abuts against the lower side of the protruding frame (52), and the expanding block (53) is placed inside the rotating frame (31). A side wall of the expanding block (53) abuts against a second heat conducting wire (54), and the second heat conducting wire (54) is arranged inside the rotating frame (31). A heat conducting threaded block (55) is arranged on one side of the first heat conducting wire (51) and the second heat conducting wire (54). The heat conducting threaded block (55) is horizontally slidably arranged inside the rotating frame (31). A threaded rod (56) is in threaded connection with the heat conducting threaded block (55), and the threaded rod (56) is rotatably arranged inside the rotating frame (31).

4. The installation structure of an automotive power battery according to claim 3, characterized in that: The automatic triggering mechanism (6) includes a placement groove (61) formed in the rotating frame (31). A non-Newtonian fluid is placed in the placement groove (61). A rotating ring (62) is rotatably arranged in the rotating frame (31), and one end of the rotating ring (62) close to the roller (32) abuts against the inner wall of the rotating frame (31). A friction ring (65) abuts against the inner side of the rotating ring (62). A rotating rod (64) is fixedly connected inside the friction ring (65). The insertion shaft (63) is movably inserted into the rotating rod (64). One end of the rotating ring (62) away from the roller (32) is fixedly connected to the threaded rod (56).

5. The installation structure of an automotive power battery according to claim 2, characterized in that: The rotating frame (31) has weak thermal conductivity, and the tray (2) has strong thermal conductivity.

6. The installation structure of an automotive power battery according to claim 3, characterized in that: A rubber pad is provided on the outer wall of the extending frame (52).

7. The installation structure of an automotive power battery according to claim 3, characterized in that: The expansion block (53) is made of a material that expands rapidly when heated. There are two heat-conducting threaded blocks (55), and the two heat-conducting threaded blocks (55) are fixedly connected to each other. One end of the first heat-conducting wire (51) and the second heat-conducting wire (54) is located between the two heat-conducting threaded blocks (55).

8. The installation structure of an automotive power battery according to claim 4, characterized in that: When the non-Newtonian fluid becomes viscous, the adhesion force between the inner wall of the placement groove (61) and the non-Newtonian fluid is greater than the frictional force between the friction ring (65) and the rotating ring (62).

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