A balance bar with tension, cushioning and load-bearing functions

Abstract

This utility model relates to the technical field of balance bars, and more particularly to a balance bar with tension, buffering, and load-bearing functions. The support rod assembly includes a steel pipe and a piston rod. One end of the piston rod is riveted to a flat washer, a piston, and a star-shaped washer, and is inserted into the rear end of the steel pipe. The other end of the piston rod has a guide member fixed to the front end of the steel pipe. The other end of the piston rod has an extension protruding outward from the front end of the steel pipe, and a buffer block is fitted on the extension. A mechanical spring is fitted on the support rod assembly, with one end fixed to the rear end of the steel pipe and the other end fixed to the extension at the other end of the piston rod. This structure can provide inward pulling force to balance the driving force, has a buffering function during the door closing phase, and can withstand large pulling forces. Even in the extended state, the structure still has high circumferential stiffness and can withstand a certain amount of lateral force, preventing pressure on the vehicle body rubber strips during operation and avoiding shaking when opening the door.

Description

Technical Field

[0001] This utility model relates to a balance bar, and more particularly to a balance bar with tension, buffering and load-bearing functions. Background Technology

[0002] The purpose of a stabilizer bar is to provide a balancing force corresponding to the drive mechanism during the opening and closing of the car door, thereby ensuring the smoothness of the door opening and closing. Common stabilizer bars provide extension force and are used in conjunction with electric struts.

[0003] Currently, there is an urgent market need for a balance bar with tension, cushioning, and load-bearing functions. This balance bar should provide contraction force, meaning that in the normal state, the piston rod retracts to the bottom of the steel tube, providing tension to balance the driving force during both door opening and closing. Additionally, since the door closes at a relatively high speed, a cushioning effect is needed to prevent the piston rod from impacting the bottom of the steel tube and causing noise. Furthermore, the balance bar needs to withstand significant tensile forces; a common requirement is 5000N, meaning that applying this force to both ends should ensure the balance bar does not fail. Moreover, the dead zone within the working stroke should be minimized to ensure a compact structure. Utility Model Content

[0004] The present invention aims to solve the above-mentioned defects and provide a balance bar with tension, buffering and load-bearing functions.

[0005] To overcome the deficiencies in the prior art, the technical solution adopted by this utility model to solve its technical problem is as follows: This balance bar with tension, buffering and load-bearing functions includes an inner sleeve and an outer sleeve. The outer sleeve is fitted onto the inner sleeve. A support rod assembly is provided inside the inner sleeve. The support rod assembly includes a steel pipe and a piston rod. One end of the piston rod is riveted with a flat washer, a piston and a perforated washer, and inserted into the rear end of the steel pipe. The other end of the piston rod is provided with a guide member, which is fixed to the front end of the steel pipe. The other end of the piston rod has an extension protruding from the outer side of the front end of the steel pipe. A buffer block is fitted onto the extension. A mechanical spring is fitted onto the support rod assembly. One end of the mechanical spring is fixed to the rear end of the steel pipe, and the other end is fixed to the extension at the other end of the piston rod.

[0006] According to another embodiment of the present invention, the guide member is further fixed by a groove provided on the steel pipe.

[0007] According to another embodiment of the present invention, the steel pipe is further provided with lubricating grease.

[0008] According to another embodiment of the present invention, the piston rod is further included to have an extension at the other end connected to the inner sleeve, and a portion of the extension extends to the outside of the inner sleeve. A rod end iron ball socket is connected to the extension. A screw is welded to the bottom of the rear end of the steel pipe. The screw passes through the outside of the outer sleeve. The portion of the screw that passes through the outside of the outer sleeve is threaded to the pipe end iron ball socket, so that the pipe end iron ball socket is fixed to the end of the outer sleeve.

[0009] According to another embodiment of the present invention, the outer sleeve is further provided with a tube end gasket on the connecting screw, and a buffer block, a rod end gasket and a buckle are provided at the other end extension of the connecting piston rod inside the inner sleeve. The buffer block, rod end gasket and buckle are sequentially sleeved on the piston rod from the inside to the outside. The buckle is located at the outermost end and is assembled with the inner sleeve. The inner sleeve is sleeved on the mechanical spring. One end of the mechanical spring is connected and fixed to the tube end gasket and the other end is connected and fixed to the rod end gasket.

[0010] According to another embodiment of the present invention, the steel pipe is further provided with a metal ring welded to its rear end, a pipe end gasket is fitted on the metal ring, a rod end gasket and a buffer block are fitted on the extension of the other end of the piston rod, a rod end metal ring is welded to the end of the extension of the other end of the piston rod, one end of the mechanical spring is fixed by the pipe end gasket, the other end is fixed by the rod end gasket, the inner sleeve is fitted on the mechanical spring and covers the pipe end metal ring, pressing on the mechanical spring, and the outer sleeve is fitted on the inner sleeve and covers the rod end metal ring.

[0011] The beneficial effects of this utility model are as follows: This balance bar, which has tension, buffering, and load-bearing functions, is designed with a mechanical spring that is sleeved on the outside of a steel tube and fixed to the ends of the steel tube and piston rod, respectively. Therefore, when the piston rod is stretched outward, the mechanical spring generates an inward reaction force for balance. Simultaneously, a buffer block is sleeved on the piston rod; when the door closes, the spring contracts, and the speed gradually decreases upon contact with the buffer block, preventing impact and noise. A piston assembly is riveted to the bottom of the piston rod, and a guide is fixed to the sealed area of ​​the steel tube. When a force of 5000N is applied, the piston assembly contacts the guide, and the sealed area can withstand this force. Furthermore, since the mechanical spring uses a tension spring working mode, there is no dead zone during the spring's operation, resulting in a shorter dead zone in this design. Additionally, this structure can withstand a certain amount of lateral force, preventing circumferential swaying during operation and thus avoiding compression of the car body trim. The inner and outer sleeves prevent the mechanical spring from being exposed, not only preventing dust from adhering to the spring and improving its lifespan, but also enhancing the overall aesthetics. The overall structure is highly versatile, has great value for engineering promotion, and can meet the current application problems. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural diagram of the normal state of Embodiment 1;

[0015] Figure 3 This is a schematic diagram of the structure in the extended state of Embodiment 1;

[0016] Figure 4 This is a schematic diagram of the structure in the normal state of Embodiment 2;

[0017] Figure 5 This is a schematic diagram of the structure in the extended state of Embodiment 2;

[0018] The components are: 1. Flat gasket; 2. Piston; 3. Plexicon gasket; 4. Piston rod; 5. Steel pipe; 5-1. Lubricating grease; 6. Guide component; 7. Iron ball socket at rod end; 8. Clip; 9. Rod end gasket; 10. Buffer block; 11. Mechanical spring; 12. Inner sleeve; 13. Outer sleeve; 14. Welding screw; 15. Pipe end gasket; 16. Iron ball socket at pipe end; 17. Metal ring at rod end; 18. Metal ring at pipe end. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the protection scope of this utility model.

[0020] like Figure 1 As shown, a balance bar with tension, buffering, and load-bearing functions is provided. The support rod assembly includes a steel pipe 5 and a piston rod 4. One end of the piston rod 4 is riveted to a flat washer 1, a piston 2, and a star-shaped washer 3, and is inserted into the rear end of the steel pipe 5. The other end of the piston rod 4 is provided with a guide 6, which is fixed to the front end of the steel pipe 5. The other end of the piston rod 4 has an extension protruding outward from the front end of the steel pipe 5, and a buffer block 10 is fitted on the extension. A mechanical spring 11 is fitted on the support rod assembly, with one end fixed to the rear end of the steel pipe 5 and the other end fixed to the extension at the other end of the piston rod 4. The guide 6 is fixed by a groove provided on the steel pipe 5, which is a simple fixing method. Lubricating grease 5-1 is provided inside the steel pipe 5 to reduce friction between the piston assembly and the steel pipe.

[0021] The mechanical spring 11 is fitted onto the steel pipe 5 and fixed to both the end of the steel pipe 5 and the end of the piston rod 4. Therefore, when the piston rod 4 is stretched outward, the mechanical spring 11 generates an inward reaction force to balance the force. The mechanical spring 11 differs from conventional gas spring assemblies, which only serve to guide and withstand a tensile strength of 5000N. The mechanical spring 11 not only provides guidance but also functions as a tension spring when a force of 5000N is applied. This structure also eliminates noise and prevents circumferential swaying.

[0022] A buffer block 10 is fitted onto the piston rod 4. When the door closes, the mechanical spring 11 contracts, and the speed gradually decreases upon contact with the buffer block 10, preventing impact and noise. A flat washer 1, a piston 2, and a perforated washer 3 are riveted to the bottom of the piston rod 4. A guide 6 is fixed to the sealed area at the front end of the steel pipe 5. When a force of 5000N is applied, the piston assembly formed by the flat washer 1, piston 2, and perforated washer 3 contacts the guide 6, and the sealed area at the front end of the steel pipe 5 can withstand this force. Furthermore, since the mechanical spring 11 uses a tension spring operating mode, there is no dead zone during the spring's operation, resulting in a short dead zone in this design. Additionally, this structure can withstand a certain amount of lateral force, preventing circumferential swaying during operation and thus avoiding compression of the body trim strips. Example

[0023] like Figure 2 As shown, the extension of the piston rod 4 at the other end of the support rod assembly is connected to the inner sleeve 12, and part of the extension extends to the outside of the inner sleeve 12. Inside the inner sleeve 12, at the location connecting the extension of the piston rod 4 at the other end, there is a buffer block 10, a rod end washer 9, and a buckle 8. The buffer block 10, rod end washer 9, and buckle 8 are sequentially fitted onto the piston rod 4 from the inside to the outside. The buckle 8 is located at the outermost end and is assembled with the inner sleeve 12. The extension is connected to the rod end iron ball socket 7, and the rod end iron ball socket 7 is connected to the piston rod 4. The steel pipe 5 is fixed by a threaded connection and pressed onto the buckle 8. A screw 14 is welded to the bottom of the rear end of the steel pipe 5. The screw 14 passes through the outside of the outer sleeve 13. The part of the screw 14 that passes through the outside of the outer sleeve 13 is threaded to the iron ball socket 16 at the end of the pipe end, so that the iron ball socket 16 at the end of the pipe end is fixed to the end of the outer sleeve 13. A pipe end washer 15 is fitted inside the outer sleeve 13 and on the connecting screw 14. The inner sleeve 12 is fitted on the mechanical spring 11. One end of the mechanical spring 11 is connected and fixed to the pipe end washer 15, and the other end is connected and fixed to the rod end washer 9.

[0024] Iron ball sockets 7 and 16 can directly connect to the car body ball studs and brackets, thus offering strong operability. Under normal conditions, the piston rod is retracted at the bottom of the steel tube; during operation, the piston rod extends. Figure 3As shown, since both ends of the mechanical spring 11 are fixed, it moves along with the piston rod, and the inner sleeve 12 also moves along with the piston rod, thus ensuring that the mechanical spring 11 is always inside. The buffer block 10 can stop at any position of the piston rod, and plays a buffering role when the piston rod retracts into the tube. Example

[0025] like Figure 4 As shown, a metal ring 18 is welded to the rear end of the steel pipe 5 on the support rod assembly. A pipe end gasket 15 is fitted on the metal ring 18. A rod end gasket 9 and a buffer block 10 are fitted on the extension of the other end of the piston rod 4. A rod end metal ring 17 is welded to the end of the extension of the other end of the piston rod 4. One end of the mechanical spring 11 is fixed by the pipe end gasket 15, and the other end is fixed by the rod end gasket 9. The inner sleeve 12 is fitted on the mechanical spring 11 and covers the pipe end metal ring 18, pressing on the mechanical spring 11. The outer sleeve 13 is fitted on the inner sleeve 12 and covers the rod end metal ring 17.

[0026] The tube end metal ring 18 and the rod end metal ring 17 can be connected to the bracket and fixed by riveting, thereby ensuring that the inner and outer sleeves 12 and 13 are fixed and do not fall off. This embodiment has strong adaptability; the OEM only needs to install the bracket. Under normal conditions, the piston rod is retracted at the bottom of the steel tube; during operation, the piston rod extends out, such as... Figure 5 As shown, since both ends of the mechanical spring 11 are fixed, it moves along with the piston rod, and the outer sleeve 13 also moves along with the piston rod, thus ensuring that the mechanical spring 11 is always encased inside. The buffer block 10 can stop at any position of the piston rod, and plays a buffering role when the piston rod retracts into the tube.

[0027] The above two structures are mainly used on top and bottom doors, and are used in conjunction with the actuator. When the actuator drives the bottom door to open, the mechanical spring is stretched, and the resulting reaction force balances the weight of the bottom door, realizing the smooth opening of the bottom door; when the actuator drives the bottom door to close, the mechanical spring rebounds, helping the bottom door to close smoothly.

[0028] The balance bar of the two embodiments described above has the following advantages:

[0029] 1) When the working state is the extended state, the mechanical spring is stretched, thus providing an inward pulling force to balance the driving force;

[0030] 2) It has a buffer function during the closing phase;

[0031] 3) This balance bar can withstand a large tensile force; the current market application is 5000N.

[0032] 4) This stabilizer bar has a large circumferential stiffness and can withstand a certain lateral force, preventing it from pressing on the body rubber strip during operation and preventing shaking when the door is opened;

[0033] 5) It can provide different interface forms, such as the form of a spherical socket, the form of a welded metal ring, etc., with strong adaptability;

[0034] 6) The inner and outer sleeves are designed, and the whole is more beautiful.

[0035] 7) The piston assembly is coated with grease, and the mechanical spring is also coated with grease, which can effectively avoid noise during the working process.

[0036] As mentioned above, it is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A balance bar with tension, buffering and load-bearing functions, comprising an inner sleeve (12) and an outer sleeve (13), wherein the outer sleeve (13) is fitted onto the inner sleeve (12), characterized in that: The inner sleeve (12) is provided with a support rod assembly, which includes a steel pipe (5) and a piston rod (4). One end of the piston rod (4) is riveted to a flat washer (1), a piston (2) and a plum blossom washer (3) and inserted into the rear end of the steel pipe (5). The other end of the piston rod (4) is provided with a guide (6), which is fixed to the front end of the steel pipe (5). The other end of the piston rod (4) has an extension protruding from the outside of the front end of the steel pipe (5). A buffer block (10) is fitted on the extension. A mechanical spring (11) is fitted on the support rod assembly. One end of the mechanical spring (11) is fixed to the rear end of the steel pipe (5) and the other end is fixed to the extension of the other end of the piston rod (4).

2. A balance bar with tension, buffering, and load-bearing functions as described in claim 1, characterized in that: The guide (6) is fixed by a groove provided on the steel pipe (5).

3. A balance bar with tension, buffering, and load-bearing functions as described in claim 1, characterized in that: The steel pipe (5) is provided with grease (5-1).

4. A balance bar with tension, buffering, and load-bearing functions as described in claim 1, characterized in that: The extension of the piston rod (4) at the other end is connected to the inner sleeve (12), and part of the extension extends to the outside of the inner sleeve (12). The extension is connected to the rod end iron ball socket (7). The bottom of the rear end of the steel pipe (5) is welded with a screw (14). The screw (14) passes through the outside of the outer sleeve (13). The part of the screw (14) that passes through the outside of the outer sleeve (13) is threaded to the pipe end iron ball socket (16), so that the pipe end iron ball socket (16) is fixed to the end of the outer sleeve (13).

5. A balance bar with tension, buffering, and load-bearing functions as described in claim 4, characterized in that: A tube end gasket (15) is fitted inside the outer sleeve (13) and onto the connecting screw (14). A rod end gasket (9) and a buckle (8) are also provided inside the inner sleeve (12) at the other end extension of the connecting piston rod (4). The buffer block (10), rod end gasket (9) and buckle (8) are fitted onto the piston rod (4) from the inside to the outside. The buckle (8) is located at the outermost end and is assembled with the inner sleeve (12). The inner sleeve (12) is fitted onto the mechanical spring (11). One end of the mechanical spring (11) is connected and fixed to the tube end gasket (15), and the other end is connected and fixed to the rod end gasket (9).

6. A balance bar with tension, buffering, and load-bearing functions as described in claim 1, characterized in that: The rear end of the steel pipe (5) is welded with a metal ring (18), and a pipe end gasket (15) is fitted on the metal ring (18). A rod end gasket (9) and a buffer block (10) are fitted on the extension of the other end of the piston rod (4). A rod end metal ring (17) is welded to the end of the extension of the other end of the piston rod (4). One end of the mechanical spring (11) is fixed by the pipe end gasket (15), and the other end is fixed by the rod end gasket (9). The inner sleeve (12) is fitted on the mechanical spring (11) and covers the pipe end metal ring (18) at the same time, pressing on the mechanical spring (11). The outer sleeve (13) is fitted on the inner sleeve (12) and covers the rod end metal ring (17) at the same time.

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