A balance bar with stretching, load bearing and interface adaptation functions

Abstract

The present application relates to the technical field of automobile tail door structure, and more particularly to a balance bar with stretching, bearing and interface adaptation functions. The balance bar with stretching, bearing and interface adaptation functions comprises a spring pull rod body, the spring pull rod body comprises a left side pull ear assembly, a left side gasket, a pull spring, a right side gasket and a right side pull ear assembly, the left side pull ear assembly and the right side pull ear assembly are staggered through each other, the pull spring is sleeved on the left side pull ear assembly and the right side pull ear assembly, and the two ends of the pull spring are connected with the left side gasket arranged on the left side pull ear assembly and the right side gasket arranged on the right side pull ear assembly, and the balance bar further comprises a connecting mechanism connected to both sides of the spring pull rod body and connecting the ground door with the vehicle body. The balance bar can provide inward tension to balance the driving force, the balance bar can bear a large tension, the spring pull rod body serves as a platform part and can provide different interface adaptation forms, such as iron ball socket form, screw connection form and the like, and has strong adaptability.

Description

Technical Field

[0001] This invention relates to a balance bar, and more particularly to a balance bar with tension, load-bearing and interface adaptation functions. Background Technology

[0002] With the rapid development of the automotive industry, many OEMs have proposed the concept and requirement of tailgates with top and bottom sections: the top section is similar to the traditional SUV tailgate, driven by a gas strut or electric strut; the bottom section is similar to the pickup truck tailgate, requiring an actuator to open and close. However, because bottom sections are generally heavier and need to withstand greater external forces when opened, two stabilizer bars are needed on both sides to provide reaction force support. The actuator and stabilizer bars work simultaneously. During the opening and full descent of the bottom section, the reaction force of the stabilizer bars ensures the bottom section descends slowly into place; during the rising and full closing of the bottom section, the reaction force of the stabilizer bars ensures the bottom section rises slowly and locks. In addition, the stabilizer bars must meet a tensile strength requirement of 5000N, be compatible with different interfaces, and have a large stroke and small dead zone. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned defects and provide a balance bar with tension, load-bearing and interface adaptation functions.

[0004] To overcome the deficiencies in the prior art, the technical solution adopted by the present invention to solve its technical problem is as follows: This balance bar with tension, load-bearing and interface adaptation functions includes a spring rod body, which includes a left pull lug assembly, a left washer, a tension spring, a right washer and a right pull lug assembly. The left pull lug assembly and the right pull lug assembly are interleaved and penetrate each other. The tension spring is sleeved on the left pull lug assembly and the right pull lug assembly. The two ends of the tension spring are connected to the left washer on the left pull lug assembly and the right washer on the right pull lug assembly. It also includes a connecting mechanism that connects the two sides of the spring rod body to the ground door and the vehicle body.

[0005] According to another embodiment of the present invention, the left pull ear assembly and the right pull ear assembly further include pull ears and buckles, the buckles being plastic parts, and the buckles being nested on the bottom steel wire of the pull ears.

[0006] According to another embodiment of the present invention, the left gasket has two notches and the right gasket has two notches. Two posts at one end of the left pull lug assembly are inserted into the notches of the left gasket, and two posts at one end of the right pull lug assembly are inserted into the notches of the right gasket. The left gasket and the right gasket are respectively attached to the two ends of the tension spring.

[0007] According to another embodiment of the present invention, the connecting mechanism further includes a left ball socket, a left threaded connector, a left support block, a left rivet, a right rivet, a right support block, a right threaded connector, and a right ball socket. The left support block and the right support block are both flat. The left support block is engaged in the pull end of the left pull lug assembly, and the right support block is engaged in the pull end of the right pull lug assembly. The left threaded connector and the right threaded connector include a U-shaped portion and a bolt fixed to the end face of the U-shaped portion. The left threaded connector is sleeved on the pull end of the left pull lug assembly and connected to the left support block through the left rivet. The right threaded connector is sleeved on the pull end of the right pull lug assembly and connected to the right support block through the right rivet. The bolt of the left threaded connector is connected to the left ball socket, and the bolt of the right threaded connector is connected to the right ball socket.

[0008] According to another embodiment of the present invention, it further includes an inner sleeve and an outer sleeve. The inner sleeve is fitted onto the spring rod body, and one end of it is attached to the right threaded joint and fixed by a right ball socket to the bolt of the right threaded joint. The outer sleeve is fitted onto the inner sleeve, and one end of it is attached to the left threaded joint and fixed by a left ball socket to the bolt of the left threaded joint. The surface of the inner sleeve is provided with a raised rib that mates with the inner hole of the outer sleeve.

[0009] According to another embodiment of the present invention, the connecting mechanism further includes a left support block, a right support block, a sleeve, a rubber sleeve, a screw, and a nut. Both the left and right support blocks are flat. The left support block is engaged in the pull lug end of the left pull lug assembly, and the right support block is engaged in the pull lug end of the right pull lug assembly. The sleeve passes through the inner hole of the left support block and is engaged with the rubber sleeve. The screw passes through the inner hole of the right support block and is engaged with the nut.

[0010] According to another embodiment of the present invention, it further includes an inner sleeve with a contoured lug at one end. After the inner sleeve is fitted onto the spring rod body, the contoured lug engages with the right-side pull lug assembly. An outer sleeve is also provided with a contoured lug at one end. After the outer sleeve is fitted onto the spring rod body, the contoured lug engages with the left-side pull lug assembly.

[0011] The beneficial effects of this invention are:

[0012] 1. It can provide an inward pulling force to balance the driving force;

[0013] 2. This balance bar can withstand a large tensile force; the current market standard is 5000N.

[0014] 3. As a platform component, the spring rod body can provide different interface adaptation forms, such as iron ball socket form, screw connection form, etc., with strong adaptability;

[0015] 4. It features inner and outer sleeves, providing dust protection and enhancing its overall aesthetic appeal;

[0016] 5. The spring rod body is coated with grease, and the inner sleeve is designed with raised ribs to reduce the contact area with the inner hole of the outer sleeve, thereby reducing noise and friction during operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the normal state of the spring rod body in this invention;

[0019] Figure 2 This is a schematic diagram of the spring rod body in its extended state in this invention;

[0020] Figure 3 This is a structural diagram of the left and right pull lug assemblies in the spring rod body;

[0021] Figure 4 This is a structural schematic diagram of the exploded view of Example 1;

[0022] Figure 5 This is a structural schematic diagram of Embodiment 1;

[0023] Figure 6 This is a structural schematic diagram of Embodiment 2;

[0024] Figure 7 This is a schematic diagram of the exploded view of Example 3;

[0025] Figure 8 This is a structural schematic diagram of Embodiment 3;

[0026] Figure 9 This is a structural schematic diagram of Embodiment 4;

[0027] The components are as follows: 1. Left ball socket; 2. Left threaded connector; 3. Left support block; 4. Left rivet; 5. Spring rod body; 5-1. Left pull lug assembly; 5-2. Left washer; 5-3. Tension spring; 5-4. Right washer; 5-5. Right pull lug assembly; 5-1-1. Left pull lug; 5-1-2. Buckle; 6. Inner sleeve; 7. Outer sleeve; 8. Right rivet; 9. Right support block; 10. Right threaded connector; 11. Right ball socket; 12. Sleeve; 13. Rubber sleeve; 14. Inner sleeve one; 15. Outer sleeve one; 16. Screw; 17. Nut. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, the structure of the spring pull rod body 5 includes a left pull lug assembly 5-1, a left washer 5-2, a tension spring 5-3, a right washer 5-4, and a right pull lug assembly 5-5. The left pull lug assembly 5-1 and the right pull lug assembly 5-5 are interwoven. The tension spring 5-3 is sleeved on the left pull lug assembly 5-1 and the right pull lug assembly 5-5. The two ends of the tension spring 5-3 are connected to the left washer 5-2 on the left pull lug assembly 5-1 and the right washer 5-4 on the right pull lug assembly 5-5. The spring pull rod body 5 also includes a connecting mechanism that connects the two sides of the spring pull rod body 5 to the ground door and the vehicle body.

[0030] The left pull lug assembly 5-1 and the right pull lug assembly 5-5 have the same structure, both including a pull lug 5-1-1 and a buckle 5-1-2. The buckle 5-1-2 is a plastic part with a certain degree of plasticity. Its contoured surface can be nested on the bottom steel wire of the pull lug 5-1-1 to keep it fixed. In addition, it has high strength and can withstand greater pressure.

[0031] The left washer 5-2 has two notches, and the right washer 5-4 has two notches. Two posts at one end of the left pull lug assembly 5-1 are inserted into the notches in the left washer 5-2, and two posts at one end of the right pull lug assembly 5-5 are inserted into the notches in the right washer 5-4. The left washer 5-2 and the right washer 5-4 are respectively secured to both ends of the tension spring 5-3.

[0032] During assembly, the left pull lug assembly 5-1 and the right pull lug assembly 5-5 interlock and pass through each other, and then pass through the tension spring 5-3 as a whole. The left washer 5-2 has two notches, passes through the left pull lug assembly 5-1, and then gets stuck at the end of the tension spring 5-3. The right washer 5-4 passes through the right pull lug assembly 5-5 and gets stuck at the other end of the tension spring 5-3 through the same structure, thereby firmly fixing the left pull lug assembly 5-1, the right pull lug assembly 5-5 and the tension spring 5-3 together.

[0033] like Figure 2As shown, the spring rod body 5 is in a stretched state. At this time, the left pull lug assembly 5-1 and the right pull lug assembly 5-5 press against the left washer 5-2 and the right washer 5-4 respectively, thereby transmitting the force to the tension spring 5-3. The tension spring 5-3 is stretched, thus providing an inward reaction force. When an external pulling force is applied, the latches 5-1-2 on the left pull lug assembly 5-1 and the right pull lug assembly 5-5 will contact each other, thereby bearing the external load and acting as a limit. The latches 5-1-2 on the left pull lug assembly 5-1 and the right pull lug assembly 5-5 can withstand an external pulling force exceeding 5000N. The spring rod body 5 is coated with grease, which fits with the inner hole of the inner sleeve, greatly reducing noise and friction during operation.

[0034] Example 1:

[0035] like Figure 4 , 5 As shown, the device includes a spring rod body 5. The connecting mechanisms on both sides of the spring rod body 5 include a left ball joint 1, a left threaded connector 2, a left support block 3, a left rivet 4, a right rivet 8, a right support block 9, a right threaded connector 10, and a right ball joint 11. It also includes an inner sleeve 6 and an outer sleeve 7. The left support block 3 and the right support block 9 are both flat. The left support block 3 is engaged within the end of the pull lug 5-1-1 of the left pull lug assembly 5-1, and the right support block 9 is engaged within the end of the pull lug 5-1-1 of the right pull lug assembly 5-5. The left threaded connector 2... The right-side threaded connector 10 includes a U-shaped portion and a bolt fixed to the end face of the U-shaped portion. The left-side threaded connector 2 is fitted onto the end of the pull lug 5-1-1 of the left-side pull lug assembly 5-1 and connected to the left-side support block 3 via the left-side rivet 4. The right-side threaded connector 10 is fitted onto the end of the pull lug 5-1-1 of the right-side pull lug assembly 5-5 and connected to the right-side support block 9 via the right-side rivet 8. The left-side rivet 4 and the right-side rivet 8 are riveted together by a riveting machine, thereby fixing the left-side threaded connector 2 and the right-side threaded connector 10 to the spring rod body 5. The inner sleeve 6 is fitted onto the spring rod body 5, and one end of it is attached to the right-side threaded connector 10. It is fixed to the bolt of the right-side threaded connector 10 by the right-side ball socket 11. The outer sleeve 7 is fitted onto the inner sleeve 6, and one end of it is attached to the left-side threaded connector 2. It is fixed to the bolt of the left-side threaded connector 2 by the left-side ball socket 1. The surface of the inner sleeve 6 is provided with a raised rib, which mates with the inner hole of the outer sleeve 7. The left ball joint 1 and the right ball joint 11 can connect the ground door to the vehicle body via a ball joint or bracket. During operation, the force is transmitted to the spring rod body 5 through the ball joints, thereby meeting the corresponding stroke and reaction force output requirements. The product is easy to install and disassemble, has an attractive appearance, and reliable performance.

[0036] Example 2:

[0037] like Figure 6 As shown, the structure of Embodiment 1, excluding the inner and outer sleeves used as support rods, specifically includes a spring rod body 5. The connecting mechanism includes a left ball socket 1, a left threaded connector 2, a left support block 3, a left rivet 4, a right rivet 8, a right support block 9, a right threaded connector 10, and a right ball socket 11. The left support block 3 and the right support block 9 are both flat. The left support block 3 is engaged in the end of the pull lug 5-1-1 of the left pull lug assembly 5-1, and the right support block 9 is engaged in the end of the pull lug 5-1-1 of the right pull lug assembly 5-5. Inside, the left threaded connector 2 and the right threaded connector 10 include a U-shaped portion and bolts fixed to the end face of the U-shaped portion. The left threaded connector 2 is fitted onto the end of the pull lug 5-1-1 of the left pull lug assembly 5-1 and connected to the left support block 3 via the left rivet 4. The right threaded connector 10 is fitted onto the end of the pull lug 5-1-1 of the right pull lug assembly 5-5 and connected to the right support block 9 via the right rivet 8. The bolt of the left threaded connector 2 is connected to the left ball socket 1, and the bolt of the right threaded connector 10 is connected to the right ball socket 11. The left ball socket 1 and the right ball socket 11 can connect the door to the vehicle body via ball joints or brackets. During operation, the force is transmitted to the spring pull rod body 5 through the ball sockets, thereby meeting the corresponding stroke and reaction force output requirements. The product is easy to install and disassemble, has an attractive appearance, and reliable performance.

[0038] Example 3:

[0039] like Figure 7 , 8As shown, the spring pull rod body 5 includes a connecting mechanism on both sides of the spring pull rod body 5, which includes a left support block 3, a right support block 9, a sleeve 12, a rubber sleeve 13, a screw 16, a nut 17, an inner sleeve 14, and an outer sleeve 15. The left support block 3 and the right support block 9 are both flat. The left support block 3 is locked inside the end of the pull ear 5-1-1 of the left pull ear assembly 5-1, and the right support block 9 is locked inside the end of the pull ear 5-1-1 of the right pull ear assembly 5-5. One end of the inner sleeve 14 has a contoured hanging ear. After the inner sleeve 14 is fitted onto the spring pull rod body 5, the contoured hanging ear cooperates with the right pull ear assembly 5-5. One end of the outer sleeve 15 also has a contoured hanging ear. After the outer sleeve 15 is fitted onto the spring pull rod body 5, the contoured hanging ear cooperates with the left pull ear assembly 5-1. Finally, the sleeve 12 is passed through the contoured lug at one end of the outer sleeve 15 and the inner hole of the left support block 3, and then connected to the rubber sleeve 13. The rubber sleeve 13 has great elasticity and is connected to the groove on the sleeve 12 through its internal ribs, thereby fixing the outer sleeve 15 to the spring rod body 5. The screw 16 passes through the contoured lug at one end of the inner sleeve 14 and the inner hole of the right support block 9, and then connects to the nut 17, thereby fixing the inner sleeve 14 to the spring rod body 5. The sleeve 12 has an inner hole and is connected to the vehicle body bracket through a pin. The screw 16 can be directly connected to the threaded hole on the door sheet metal. Since the installation position is in the lug area, the dead zone of the product is small. The product is easy to install and disassemble, has an attractive appearance, and reliable performance.

[0040] Example 4:

[0041] like Figure 9 As shown, the device includes a spring pull rod body 5. The connecting mechanisms on both sides of the spring pull rod body 5 include a left support block 3, a right support block 9, a sleeve 12, a rubber sleeve 13, a screw 16, and a nut 17. Both the left and right support blocks 3 and 9 are flat. The left support block 3 is engaged within the end of the pull lug 5-1-1 of the left pull lug assembly 5-1, and the right support block 9 is engaged within the end of the pull lug 5-1-1 of the right pull lug assembly 5-5. The sleeve 12 passes through the inner hole of the left support block 3 and engages with the rubber sleeve 13. The screw 16 passes through the inner hole of the right support block 9 and engages with the nut 17. The sleeve 12 has an inner hole and is connected to the vehicle body bracket via a pin. The screw 16 can be directly connected to the threaded hole on the door sheet metal. Because the installation position is in the pull lug area, the dead zone of the product is small. The product is easy to install and disassemble, has an attractive appearance, and reliable performance.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A balance bar with tension, load-bearing and interface adaptation functions, comprising a spring rod body (5), characterized in that: The spring rod body (5) includes a left pull lug assembly (5-1), a left pad (5-2), a tension spring (5-3), a right pad (5-4), and a right pull lug assembly (5-5). The left pull lug assembly (5-1) and the right pull lug assembly (5-5) are interwoven. The tension spring (5-3) is sleeved on the left pull lug assembly (5-1) and the right pull lug assembly (5-5). The two ends of the tension spring (5-3) are connected to the left pad (5-2) provided on the left pull lug assembly (5-1) and the right pad (5-4) provided on the right pull lug assembly (5-5). The spring rod body (5) also includes a connecting mechanism that connects the two sides of the spring rod body (5) to the ground door and the vehicle body.

2. A balance bar with tensile, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: The left pull ear assembly (5-1) and the right pull ear assembly (5-5) include a pull ear (5-1-1) and a buckle (5-1-2). The buckle (5-1-2) is a plastic part and is nested on the bottom wire of the pull ear (5-1-1).

3. A balance bar with tension, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: The left gasket (5-2) has two notches, and the right gasket (5-4) has two notches. Two posts at one end of the left pull lug assembly (5-1) are inserted into the notches of the left gasket (5-2), and two posts at one end of the right pull lug assembly (5-5) are inserted into the notches of the right gasket (5-4). The left gasket (5-2) and the right gasket (5-4) are respectively inserted into the two ends of the tension spring (5-3).

4. A balance bar with tensile, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: The connecting mechanism includes a left ball socket (1), a left threaded connector (2), a left support block (3), a left rivet (4), a right rivet (8), a right support block (9), a right threaded connector (10), and a right ball socket (11). The left support block (3) and the right support block (9) are both flat. The left support block (3) is engaged in the end of the pull lug (5-1-1) of the left pull lug assembly (5-1), and the right support block (9) is engaged in the end of the pull lug (5-1-1) of the right pull lug assembly (5-5). The left threaded connector (2) and the right threaded connector (9) are also flat. The head (10) includes a U-shaped part and a bolt fixed to the end face of the U-shaped part. The left threaded connector (2) is sleeved on the end of the pull ear (5-1-1) of the left pull ear assembly (5-1) and connected to the left support block (3) through the left rivet (4). The right threaded connector (10) is sleeved on the end of the pull ear (5-1-1) of the right pull ear assembly (5-5) and connected to the right support block (9) through the right rivet (8). The bolt of the left threaded connector (2) is connected to the left ball socket (1), and the bolt of the right threaded connector (10) is connected to the right ball socket (11).

5. A balance bar with tension, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: It also includes an inner sleeve (6) and an outer sleeve (7). The inner sleeve (6) is fitted on the spring rod body (5), and one end of it is attached to the right threaded joint (10). It is fixed to the bolt of the right threaded joint (10) by the right ball socket (11). The outer sleeve (7) is fitted on the inner sleeve (6), and one end of it is attached to the left threaded joint (2). It is fixed to the bolt of the left threaded joint (2) by the left ball socket (1). The inner sleeve (6) has a raised rib on its surface, which fits with the inner hole of the outer sleeve (7).

6. A balance bar with tensile, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: The connecting mechanism includes a left support block (3), a right support block (9), a sleeve (12), a rubber sleeve (13), a screw (16), and a nut (17). The left support block (3) and the right support block (9) are both flat. The left support block (3) is locked inside the end of the pull ear (5-1-1) of the left pull ear assembly (5-1), and the right support block (9) is locked inside the end of the pull ear (5-1-1) of the right pull ear assembly (5-5). The sleeve (12) passes through the inner hole of the left support block (3) and then engages with the rubber sleeve (13). The screw (16) passes through the inner hole of the right support block (9) and then engages with the nut (17).

7. A balance bar with tension, load-bearing, and interface adaptation functions as described in claim 1, characterized in that: It also includes an inner sleeve (14) with a contoured lug at one end. After the inner sleeve (14) is fitted onto the spring rod body (5), the contoured lug engages with the right-side lug assembly (5-5). One end of the outer sleeve (15) is also provided with a contoured lug. After the outer sleeve (15) is fitted onto the spring rod body (5), the contoured lug engages with the left-side lug assembly (5-1).

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