Double-door vehicle-mounted refrigerator

Abstract

The utility model relates to a double-door vehicle-mounted refrigerator which comprises a refrigerator body, door bodies and door locking assemblies, the front side and the rear side of each door body are detachably connected with the refrigerator body through the corresponding door locking assembly, and each door locking assembly comprises a fixed support, a switch button, a pressing elastic device and a movable locking rod. The door body can be locked or unlocked in the front side direction or the rear side direction, the mode of opening the box body through the door body is more flexible, and more different use scenes can be achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle refrigerators, specifically to a double-door vehicle refrigerator. Background Technology

[0002] A car refrigerator is a refrigeration device that can be carried in a car to meet the refrigeration needs of passengers for cold drinks, food, etc. while the vehicle is in motion.

[0003] A car refrigerator typically consists of a main body and a door. Usually, the main body and the door are connected by a hinge structure, which is fixed on one side of the car refrigerator. When the user needs to open the door, the action must be performed from a fixed position on one side, which cannot adapt to different usage scenarios.

[0004] Therefore, further improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a double-door car refrigerator with a more flexible way of opening the main body of the refrigerator, which can realize more different usage scenarios.

[0006] The purpose of this utility model is achieved as follows:

[0007] A double-door vehicle refrigerator includes a main body, a door, and a locking assembly. The front and rear sides of the door are detachably connected to the main body via the locking assembly. The locking assembly includes a fixed bracket, a switch button, a push-button mechanism, and a movable locking rod. The fixed bracket is provided with a first limiting part and a second limiting part. The switch button and the movable locking rod are slidably connected to the first limiting part and the second limiting part, respectively.

[0008] A linkage mechanism is provided between the switch button and the movable locking rod. The movable locking rod can move back and forth along its length through the linkage mechanism. The movable locking rod can extend outward to connect with the main body of the box or retract inward to separate from the main body of the box, so that the door is in a locked or unlocked state.

[0009] The switch button is equipped with a trigger part for connecting and cooperating with the push button. The push button has a first use state or a second use state. In the first use state, the push button locks the trigger part, and the trigger part drives the switch button to unlock the door. In the second use state, the push button releases and pushes the trigger part to reset, and the trigger part drives the switch button to lock the door. Each press of the push button by the trigger part can switch the push button back and forth between the first use state and the second use state.

[0010] An anti-slip door linkage is provided between the corresponding switch buttons on the front and rear sides of the door body. A limiting mechanism is provided between the anti-slip door linkage and the switch buttons to limit the maximum relative distance between the two switch buttons.

[0011] As a specific embodiment, the first limiting part includes an upwardly protruding convex column, on which a guide groove is provided, and a guide rib corresponding to the guide groove is provided on the switch button. The guide rib and the guide groove are opened in the front-back direction, and the guide rib and the guide groove are slidably connected and engaged with each other. The switch button has a U-shaped hollow cavity, and corresponding guide ribs are provided on both sides of the inner wall of the hollow cavity. The fixed bracket has convex columns at adjacent positions on both sides of the inner wall of the hollow cavity.

[0012] As a specific embodiment, the trigger part is located inside the hollow cavity, and a limiting cavity corresponding to the presser is formed between the two protruding parts.

[0013] As a specific embodiment, the second limiting part includes a limiting groove, which is opened along the length direction of the movable locking rod, and the movable locking rod is embedded in the inner side of the limiting groove; the limiting groove is provided with a plurality of anti-detachment blocks at a position corresponding to the upper part of the movable locking rod, and the vertical projection of the anti-detachment blocks overlaps with the movable locking rod at least partially; the bottom of the movable locking rod is provided with a clearance groove opened along its length direction, and the limiting groove is provided with a plurality of guide posts distributed along its length direction at a position corresponding to the inner side of the clearance groove, and the guide posts are adjacent to and cooperate with the clearance groove; the left and right sides of the switch button are respectively connected to corresponding movable locking rods, and the switch button causes the two movable locking rods to move synchronously through a linkage mechanism; the fixed bracket is provided with corresponding second limiting parts on the left and right sides of the switch button.

[0014] As a specific embodiment, the linkage mechanism includes guide grooves and guide protrusions respectively disposed on the switch button and the movable locking rod. The switch button can reciprocate in a direction perpendicular to the movement of the movable locking rod. The guide groove is inclined between the movement directions of the switch button and the movable locking rod. The guide protrusion is inserted into the guide groove and slides with each other.

[0015] As a specific embodiment, the movable locking rod is connected to a return spring. When the movable locking rod retracts inward, the return spring is compressed and deformed. When the return spring returns to its original position, it pushes the movable locking rod outward. The movable locking rod is provided with a limiting protrusion, and the return spring is at least partially sleeved on the outer side of the limiting protrusion. When the switch button moves towards the center of the door, the movable locking rod retracts inward. One end of the guide groove near the center of the door is connected to an extension groove extending towards the center of the door. The opening direction of the extension groove is parallel to the movement direction of the switch button. When the return spring returns to its original position, the guide protrusion slides along the direction of the extension groove.

[0016] As a specific embodiment, the limiting mechanism includes a limiting elongated hole and a limiting post respectively disposed on the anti-slip door linkage and the switch button; when the door is in the unlocked state, the limiting post abuts or is adjacent to the side of the limiting elongated hole near the corresponding switch button; when the door is in the locked state, the limiting post abuts or is adjacent to the side of the limiting elongated hole away from the corresponding switch button; the side of the limiting post away from the switch button and / or near the switch button is provided with an anti-slip protrusion, and when the limiting post abuts with the limiting elongated hole, the vertical projection of the corresponding anti-slip protrusion is at least partially offset from the limiting elongated hole; the maximum stroke of the trigger part pressing the push button is equivalent to the length of the limiting elongated hole.

[0017] As a specific embodiment, the cross-section of the anti-slip door linkage is I-shaped, with the left and right sides of the anti-slip door linkage extending in the vertical direction, respectively.

[0018] As a specific embodiment, the movable locking rod includes a rod body and a rod connecting part. The rod body is sleeved on the outside of the rod connecting part and they slide and connect with each other in a circumferential direction. The box body is provided with a shaft hole corresponding to the rod connecting part. The switch button can cause the rod connecting part to extend outward and connect with the shaft hole or to retract inward and separate from the shaft hole through the linkage mechanism and the rod body.

[0019] As a specific embodiment, the cross-sectional shapes of the rod connection and the shaft hole are respectively flattened round shapes, and the space between the rod body and the rod connection is filled with damping oil to form a circumferential damping force between the two.

[0020] The beneficial effects of this utility model are:

[0021] By setting two sets of locking components, the door can be locked or unlocked from the front or rear, making the way the door is opened more flexible and enabling more different usage scenarios. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the usage state of this utility model embodiment. Figure 1 .

[0023] Figure 2 This is a schematic diagram of the usage state of this utility model embodiment. Figure 2 .

[0024] Figure 3 This is a schematic diagram of the usage state of this utility model embodiment. Figure 3 .

[0025] Figure 4 This is a schematic diagram of the usage state of this utility model embodiment. Figure 4 .

[0026] Figure 5 This is a structural schematic diagram of an embodiment of the present utility model.

[0027] Figure 6 This is a cross-sectional view of an embodiment of the present utility model. Figure 1 .

[0028] Figure 7 This is a cross-sectional view of an embodiment of the present utility model. Figure 2 .

[0029] Figure 8 This is a cross-sectional view of an embodiment of the present utility model. Figure 3 .

[0030] Figure 9 This is a cross-sectional view of an embodiment of the present utility model. Figure 4 .

[0031] Figure 10 This is a cross-sectional view of an embodiment of the present utility model. Figure 5 .

[0032] Figure 11 This is an exploded view of an embodiment of the present invention.

[0033] Figure 12 This is a schematic diagram of the structure of the fixed bracket in an embodiment of the present utility model.

[0034] Figure 13 This is a schematic diagram of the movable locking rod in an embodiment of the present invention.

[0035] Figure 14 This is an enlarged view of embodiment A of the present invention.

[0036] Figure 15 This is an enlarged view of embodiment B of the present invention.

[0037] Figure 16 This is an enlarged view of embodiment C of this utility model.

[0038] Figure 17 This is an enlarged view of embodiment D of the present invention. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] See Figures 1-17This double-door car refrigerator includes a main body 1, a door 2, and a locking assembly. The front and rear sides of the door 2 are detachably connected to the main body 1 via the locking assembly. The locking assembly includes a fixed bracket 3, a switch button 4, a push-button 5, and a movable locking rod 6. The fixed bracket 3 is provided with a first limiting part and a second limiting part. The switch button 4 and the movable locking rod 6 are slidably connected and cooperate with the first limiting part and the second limiting part, respectively. By setting two sets of locking assemblies, the door 2 can be locked or unlocked from the front or rear, making the way the door 2 opens the main body 1 more flexible and enabling more different usage scenarios.

[0041] The fixed bracket 3 can simultaneously limit the movement of the switch button 4 and the movable locking rod 6, making it less likely for the switch button 4 and the movable locking rod 6 to accidentally shift during use, thereby improving the stability of the linkage between the switch button 4 and the movable locking rod 6 and reducing the probability of malfunctions.

[0042] A linkage mechanism is provided between the switch button 4 and the movable locking rod 6. The movable locking rod 6 can move back and forth along its length through the linkage mechanism. The movable locking rod 6 can extend outward to connect with the main body 1 or retract inward to separate from the main body 1, so that the door 2 is in a locked or unlocked state. The user only needs to control the movement of the movable locking rod 6 through the linkage mechanism by controlling the switch button 4. The user does not need to perform complicated locking or unlocking actions, which simplifies the operation difficulty for the user.

[0043] The switch button 4 is provided with a trigger part 41 for connecting and cooperating with the push button 5. The push button 5 has a first use state or a second use state. In the first use state, the push button 5 locks the trigger part 41, and the trigger part 41 drives the switch button 4 to unlock the door 2. In the second use state, the push button 5 releases and pushes the trigger part 41 to reset, and the trigger part 41 drives the switch button 4 to lock the door 2. Each press of the trigger part 41 allows the push button 5 to switch back and forth between the first use state and the second use state. The push button 5 can stabilize the use state of the door 2 and improve the feel of the user pressing the switch button 4. The specific structure of the push button 5 is prior art, and those skilled in the art can understand the specific structure and working principle of the push button 5. Moreover, since the push button 5 itself is a prior art component, its connection and cooperation structure with the switch button 4 is relatively simple, simplifying the overall structural layout of the door 2.

[0044] An anti-detachment door linkage 7 is provided between the corresponding switch buttons 4 on the front and rear sides of the door body 2. A limiting mechanism is provided between the anti-detachment door linkage 7 and the switch buttons 4 to limit the maximum relative distance between the two switch buttons 4. The anti-detachment door linkage 7 can simultaneously limit the two switch buttons 4, preventing the switch buttons 4 from accidentally detaching from the door body 2, improving the safety and stability of the user's operation of the door body 2. Moreover, the two switch buttons 4 do not need to be equipped with corresponding anti-detachment components, simplifying the overall structure of the equipment and improving installation efficiency.

[0045] Furthermore, the first limiting part includes an upwardly protruding convex post 31, on which a guide groove 311 is provided, and on the switch button 4, a guide rib 42 corresponding to the guide groove 311 is provided. The guide rib 42 and the guide groove 311 are opened in the front-back direction, and the guide rib 42 and the guide groove 311 are slidably connected and cooperate with each other, so that the switch button 4 can move on the fixed bracket 3 in a preset running direction.

[0046] The switch button 4 has a U-shaped hollow cavity 43. The inner wall of the hollow cavity 43 has corresponding guide ribs 42 on both sides. The fixed bracket 3 has protruding pillars 31 on adjacent positions on the inner wall of the hollow cavity 43. The hollow cavity 43 can better utilize the internal space of the switch button 4, making the assembly structure between the switch button 4 and the fixed bracket 3 more compact and reasonable.

[0047] Furthermore, the trigger part 41 is disposed inside the hollow cavity 43, and a limiting cavity corresponding to the presser 5 is formed between the two protruding parts 31. The protruding parts 31 can also play a certain limiting effect on the presser 5, thereby improving the stability of the installation structure of the presser 5 and the fixed bracket 3.

[0048] Furthermore, the second limiting part includes a limiting groove 32, which is opened along the length direction of the movable locking rod 6. The movable locking rod 6 is embedded in the inner side of the limiting groove 32. The limiting groove 32 can limit the movement direction of the movable locking rod 6 and reduce the chance of the movable locking rod 6 accidentally deviating.

[0049] The limiting groove 32 is provided with several anti-detachment blocks 321 above the movable locking rod 6. The vertical projection of the anti-detachment block 321 overlaps with the movable locking rod 6 at least partially. The anti-detachment block 321 can further limit the movable locking rod 6 and prevent the movable locking rod 6 from detaching from the limiting groove 32.

[0050] The bottom of the movable locking rod 6 is provided with a clearance groove 61 along its length direction. The limiting groove 32 is provided with a number of guide posts 322 distributed along its length direction at the position corresponding to the inner side of the clearance groove 61. The guide posts 322 are adjacent to and cooperate with the clearance groove 61 to effectively avoid deviation or jamming during the sliding process.

[0051] The left and right sides of the switch button 4 are respectively connected to the corresponding movable locking rods 6. The switch button 4 makes the two movable locking rods 6 move synchronously through the linkage mechanism. The fixed bracket 3 is provided with corresponding second limiting parts on the left and right sides of the switch button 4, so that the connection structure between the door 2 and the body 1 of the car refrigerator is more stable.

[0052] Furthermore, the linkage mechanism includes guide grooves 44 and guide protrusions 62 respectively disposed on the switch button 4 and the movable locking rod 6. The switch button 4 can reciprocate in a direction perpendicular to the movement of the movable locking rod 6. The guide groove 44 is inclined between the movement directions of the switch button 4 and the movable locking rod 6. The guide protrusions 62 are inserted into the guide groove 44 and slide against each other. The overall structure of the linkage mechanism is simple and the transmission efficiency is high. The user only needs to press the switch button 4 to control the movable locking rod 6.

[0053] Furthermore, the movable locking rod 6 is connected to a return spring 63. When the movable locking rod 6 is retracted inward, the return spring 63 is compressed and deformed. When the return spring 63 is reset, it pushes the movable locking rod 6 outward, so that the movable locking rod 6 can keep the door 2 in a locked state. The door 2 will only be unlocked when it is pulled by the switch button 4.

[0054] The movable locking rod 6 is provided with a limiting protrusion, and the return spring 63 is at least partially sleeved on the outer side of the limiting protrusion, which improves the stability and accuracy of the connection between the return spring 63 and the movable locking rod 6 and reduces the probability of the return spring 63 being accidentally displaced.

[0055] The movement of switch button 4 toward the center of door body 2 allows the movable locking rod 6 to retract inward. One end of guide groove 44 near the center of door body 2 is connected to an extension groove 441 extending toward the center of door body 2. The opening direction of extension groove 441 is parallel to the movement direction of switch button 4. The reset spring 63 resets the guide protrusion 62 to slide along the extension groove 441. After the movable locking rod 6 has completed its reset, switch button 4 can continue to move away from the center of door body 2 via push spring 5 without affecting the movable locking rod 6.

[0056] Furthermore, the limiting mechanism includes a limiting elongated hole 71 and a limiting post 45 respectively provided on the anti-slip door connecting rod 7 and the switch button 4; when the door 2 is in the unlocked state, the limiting post 45 abuts or is adjacent to the limiting elongated hole 71 on the side closer to the corresponding switch button 4; when the door 2 is in the locked state, the limiting post 45 abuts or is adjacent to the limiting elongated hole 71 on the side farther away from the corresponding switch button 4. The structure of the limiting elongated hole 71 and the limiting post 45 is relatively simple, not prone to failure, and the limiting mechanism is stable.

[0057] The limiting post 45 is provided with an anti-detachment protrusion 451 on the side away from the switch button 4 and / or close to the switch button 4. When the limiting post 45 abuts against the limiting elongated hole 71, the vertical projection of the corresponding anti-detachment protrusion 451 is at least partially offset from the limiting elongated hole 71. The anti-detachment protrusion 451 can prevent the anti-detachment door connecting rod 7 from accidentally falling off the limiting post 45, further improving the stability of the overall structure of the equipment.

[0058] The maximum stroke of the trigger part 41 pressing the pusher 5 is equivalent to the length of the limiting elongated hole 71, so that the anti-disengagement door linkage 7 can limit the door body 2 and prevent it from disengaging, whether the door body 2 is locked or unlocked.

[0059] Furthermore, the cross-section of the anti-slip door linkage 7 is I-shaped, and the left and right sides of the anti-slip door linkage 7 extend in the up and down directions respectively, which improves the overall structural strength of the anti-slip door linkage 7 and makes it less prone to deformation.

[0060] Furthermore, the movable locking rod 6 includes a rod body 65 and a rod connecting part 66. The rod body 65 is sleeved on the outside of the rod connecting part 66 and they slide and connect with each other in the circumferential direction. The box body 1 is provided with a shaft hole 11 corresponding to the rod connecting part 66. The switch button 4 can cause the rod connecting part 66 to extend outward and connect with the shaft hole 11 or to retract inward and separate from the shaft hole 11 through the linkage mechanism and the rod body 65.

[0061] Furthermore, the cross-sectional shapes of the rod connection 66 and the shaft hole 11 are respectively flattened round shapes. Damping oil is filled between the rod body 65 and the rod connection 66 to create circumferential damping force between them. When the user opens the corresponding door 2 using the switch button 4 on one side, the door 2 rotates around the rod body 65 on the other side. At this time, the rod connection 66 remains stationary relative to the box body 1. The rod body 65 rotates with the door 2, and the damping oil allows the door 2 to remain smoothly within a certain angle range. Damping oil or other damping structures are existing technologies, and their working principles and specific structures are understandable to those skilled in the art.

[0062] The above embodiments are merely preferred embodiments of this utility model, and other implementations are also possible. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model, and all such equivalent modifications or substitutions are included within the scope set forth in the claims of this application.

Claims

1. A double-door car refrigerator, characterized in that, The box includes a main body (1), a door (2) and a lock assembly. The front and rear sides of the door (2) are detachably connected to the main body (1) via the lock assembly. The lock assembly includes a fixed bracket (3), a switch button (4), a push button (5) and a movable lock rod (6). The fixed bracket (3) is provided with a first limiting part and a second limiting part. The switch button (4) and the movable lock rod (6) are slidably connected to the first limiting part and the second limiting part, respectively. A linkage mechanism is provided between the switch button (4) and the movable locking rod (6). The movable locking rod (6) can move back and forth along its length direction through the linkage mechanism. The movable locking rod (6) can extend outward to connect with the box body (1) or retract inward to separate from the box body (1) so that the door (2) is in a locked state or an unlocked state. The switch button (4) is provided with a trigger part (41) for connecting and cooperating with the push button (5). The push button (5) has a first use state or a second use state. When the push button (5) is in the first use state, the push button (5) locks the trigger part (41), and the trigger part (41) drives the switch button (4) to make the door (2) enter the unlock state. When the push button (5) is in the second use state, the push button (5) releases and pushes the trigger part (41) to reset, and the trigger part (41) drives the switch button (4) to make the door (2) enter the locked state. Each time the trigger part (41) presses the push button (5), the push button (5) can switch back and forth between the first use state and the second use state. An anti-slip door linkage (7) is provided between the corresponding switch buttons (4) on the front and rear sides of the door body (2). A limiting mechanism is provided between the anti-slip door linkage (7) and the switch buttons (4) to limit the maximum relative distance between the two switch buttons (4).

2. The double-door car refrigerator according to claim 1, characterized in that: The first limiting part includes an upwardly protruding convex column (31), the convex column (31) is provided with a guide groove (311), the switch button (4) is provided with a guide rib (42) corresponding to the guide groove (311), the guide rib (42) and the guide groove (311) are opened in the front-back direction, and the guide rib (42) and the guide groove (311) are slidably connected and cooperated with each other; the switch button (4) is provided with a U-shaped hollow cavity (43), the inner wall of the hollow cavity (43) is provided with corresponding guide ribs (42) on both sides, and the fixed bracket (3) is provided with convex columns (31) at adjacent positions on the inner wall of the hollow cavity (43).

3. The double-door car refrigerator according to claim 2, characterized in that: The trigger part (41) is located inside the hollow cavity (43), and a limiting cavity corresponding to the presser (5) is formed between the two protruding parts (31).

4. The double-door car refrigerator according to claim 1, characterized in that: The second limiting part includes a limiting groove (32), which is opened along the length direction of the movable locking rod (6), and the movable locking rod (6) is embedded in the inner side of the limiting groove (32); the limiting groove (32) is provided with a plurality of anti-detachment blocks (321) at the position above the movable locking rod (6), and the vertical projection of the anti-detachment blocks (321) overlaps with the movable locking rod (6) at least partially; the bottom of the movable locking rod (6) is provided with a clearance groove (61) opened along its length direction, and the limiting groove (32) is provided with a plurality of guide posts (322) distributed along its length direction at the position corresponding to the inner side of the clearance groove (61), and the guide posts (322) are adjacent to and cooperate with the clearance groove (61); the left and right sides of the switch button (4) are respectively connected to the corresponding movable locking rods (6), and the switch button (4) makes the two movable locking rods (6) move synchronously through the linkage mechanism. The fixed bracket (3) is provided with corresponding second limiting parts on the left and right sides of the switch button (4).

5. The double-door car refrigerator according to claim 1, characterized in that: The linkage mechanism includes a guide groove (44) and a guide protrusion (62) respectively disposed on the switch button (4) and the movable locking rod (6). The switch button (4) can move back and forth in a direction perpendicular to the movement of the movable locking rod (6). The guide groove (44) is inclined between the movement directions of the switch button (4) and the movable locking rod (6). The guide protrusion (62) is inserted into the guide groove (44) and slides with each other.

6. The double-door car refrigerator according to claim 5, characterized in that: The movable locking rod (6) is connected to a return spring (63). When the movable locking rod (6) is retracted inward, the return spring (63) is compressed and deformed. When the return spring (63) is reset, it can push the movable locking rod (6) to extend outward. The movable locking rod (6) is provided with a limiting protrusion (64). The return spring (63) is at least partially sleeved on the outer side of the limiting protrusion (64). When the switch button (4) moves towards the center of the door body (2), the movable locking rod (6) is retracted inward. One end of the guide groove (44) near the center of the door body (2) is connected to an extension groove (441) extending towards the center of the door body (2). The opening direction of the extension groove (441) is parallel to the movement direction of the switch button (4). When the return spring (63) is reset, the guide protrusion (62) slides along the direction of the extension groove (441).

7. The double-door car refrigerator according to claim 1, characterized in that: The limiting mechanism includes a limiting elongated hole (71) and a limiting post (45) respectively provided on the anti-slip door connecting rod (7) and the switch button (4); when the door (2) is in the unlocked state, the limiting post (45) and the limiting elongated hole (71) abut or are adjacent to each other on the side of the corresponding switch button (4); when the door (2) is in the locked state, the limiting post (45) and the limiting elongated hole (71) abut or are adjacent to each other on the side of the limiting post (71) away from the corresponding switch button (4); the limiting post (45) is provided with an anti-slip protrusion (451) on the side away from the switch button (4) and / or close to the switch button (4), and when the limiting post (45) abuts with the limiting elongated hole (71), the vertical projection of the corresponding anti-slip protrusion (451) is at least partially offset from the limiting elongated hole (71); the maximum stroke of the trigger part (41) pressing the push button (5) is equivalent to the length of the limiting elongated hole (71).

8. The double-door car refrigerator according to claim 7, characterized in that: The cross-section of the anti-slip door link (7) is I-shaped, and the left and right sides of the anti-slip door link (7) extend in the up and down directions respectively.

9. The double-door car refrigerator according to any one of claims 1-8, characterized in that: The movable locking rod (6) includes a rod body (65) and a rod connecting part (66). The rod body (65) is sleeved on the outside of the rod connecting part (66) and they slide and connect with each other in the circumferential direction. The box body (1) is provided with a shaft hole (11) corresponding to the rod connecting part (66). The switch button (4) can make the rod connecting part (66) extend outward and connect with the shaft hole (11) or retract inward and separate from the shaft hole (11) through the linkage mechanism and the rod body (65).

10. The double-door car refrigerator according to claim 9, characterized in that: The cross-sectional shapes of the rod connection part (66) and the shaft hole (11) are respectively flat and round. The rod body (65) and the rod connection part (66) are filled with damping oil to form a circumferential damping force between them.

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