Balancer device for supporting rear door of van vehicle

Abstract

The utility model provides a balancer device for supporting a rear door of a van vehicle, which comprises a spring pull rod and a bracket body arranged at the lower end of the tail part of a carriage, a first connecting rod and a third connecting rod are rotationally connected onto the bracket body, and a second connecting rod is arranged between the first connecting rod and the rear door of the carriage; the spring pull rod is connected with a spring pressing plate, and a spring is arranged between the spring pressing plate and the support body. The other end of the third connecting rod is hinged to the first connecting rod. Supporting torque is applied to the rear door through the connecting rod mechanism and the spring, compared with a traditional gas spring or hydro-pneumatic spring, the problem of gas leakage or oil leakage does not exist, use is reliable, the failure rate is low, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a balancer device for supporting a rear door of a van. Background Art

[0002] The rear of an existing van is usually provided with a rear door that can be flipped down and opened. In order to prevent the rear door from flipping down too fast due to its own gravity during the opening process, a gas spring or oil-gas spring is usually installed between the rear door and the vehicle compartment, and the two ends of the gas spring or oil-gas spring are connected to the rear door and the vehicle compartment respectively. During the opening process, the gas spring or oil-gas spring provides a certain amount of support torque for the rear door, which is opposite to the torque caused by the rear door's own gravity, thereby offsetting a part of the rear door's gravity torque, playing a certain supporting role for the rear door, and enabling the rear door to flip down and open at a relatively slow speed.

[0003] However, during use, gas springs or oil-gas springs are prone to problems such as air leakage and oil leakage, are prone to damage, and have poor reliability. Summary of the invention

[0004] The utility model aims to solve the deficiencies in the prior art and provide a balancer device for supporting the rear door of a van.

[0005] The purpose of the utility model is achieved through the following technical scheme: a balancer device for supporting the rear door of a van, comprising a spring pull rod and a bracket body installed at the lower end of the rear part of the vehicle, a first connecting rod and a third connecting rod are rotatably connected to the bracket body, a second connecting rod is arranged between the first connecting rod and the rear door of the vehicle, one end of the spring pull rod is hinged to one end of the third connecting rod, a spring pressure plate is connected to the spring pull rod, a spring is arranged between the spring pressure plate and the bracket body; the other end of the third connecting rod is hinged to the first connecting rod.

[0006] In the utility model, the spring applies tension to the spring pull rod, the spring pull rod applies tension to one end of the third connecting rod, the third connecting rod applies tension to a certain position of the first connecting rod through the fourth connecting rod, and the first connecting rod applies tension to the rear door through the second connecting rod so that the rear door generates a support torque opposite to the gravity torque, thereby balancing the gravity torque behind, slowing down the speed at which the rear door flips downward when opened, and making the rear door flip downward at a relatively gentle speed. The utility model applies support torque to the rear door through the connecting rod mechanism and the spring. Compared with the traditional gas spring or oil-gas spring, the utility model does not have the problem of air leakage or oil leakage, is reliable to use, has a low failure rate, and has a long service life.

[0007] Preferably, a connector is provided on the rear door of the vehicle compartment, one end of the second connecting rod is hinged to the connector, and the other end of the second connecting rod is hinged to the first connecting rod.

[0008] Preferably, the bracket body is provided with a first fixed shaft and a second fixed shaft, the middle portion of the third connecting rod is rotatably connected to the first fixed shaft, and one end of the first connecting rod is rotatably connected to the second fixed shaft.

[0009] Preferably, the first connecting rod is connected to the second connecting rod via a second hinge axis, the second connecting rod is connected to the connecting body via a first hinge axis, the fourth connecting rod is connected to the first connecting rod via a third hinge axis, and the fourth connecting rod is connected to the third connecting rod via a fourth hinge axis; the spring pull rod is connected to the third connecting rod via a fifth hinge axis.

[0010] Preferably, the bracket body is provided with a pull rod through hole through which the spring pull rod can pass.

[0011] Preferably, the spring pressure plate is provided with a center hole, the spring pull rod passes through the center hole of the spring pressure plate, and the spring pull rod is connected to a pressure plate limiting nut for limiting the spring pressure plate.

[0012] Preferably, when the rear door is in a fully open state, the angle between the first connecting rod and the second connecting rod is 20 to 30 degrees.

[0013] The beneficial effects of the utility model are as follows: the utility model applies a supporting torque to the rear door through a connecting rod mechanism and a spring. Compared with a traditional gas spring or oil-gas spring, the utility model does not have the problem of air leakage or oil leakage, is reliable to use, has a low failure rate and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the utility model when the rear door of the carriage is in a fully opened state.

[0016] In the figure: 1, carriage, 2, carriage rear door, 3, hinge, 4, bracket body, 5, first connecting rod, 6, second connecting rod, 7, connecting body, 8, third connecting rod, 9, fourth connecting rod, 10, spring pull rod, 11, spring pressure plate, 12, spring, 13, pressure plate limiting nut, 14, pull rod through hole, 16, first fixed axis, 17, second fixed axis, 18, first hinge axis, 19, second hinge axis, 20, third hinge axis, 21, fourth hinge axis, 22, fifth hinge axis. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0018] like Figure 1 to Figure 2 As shown, a balancer device for supporting the rear door of a van type vehicle comprises a spring pull rod 10 and a bracket body 4 installed at the lower end of the rear of the vehicle 1, and a first connecting rod 5 and a third connecting rod 8 are rotatably connected to the bracket body 4. A second connecting rod 6 is arranged between the first connecting rod 5 and the rear door 2 of the vehicle, one end of the spring pull rod 10 is hinged to one end of the third connecting rod 8, a spring pressure plate 11 is connected to the spring pull rod 10, and a spring 12 is arranged between the spring pressure plate 11 and the bracket body 4. The other end of the third connecting rod 8 is hinged to the first connecting rod 5.

[0019] Among them, the bracket body 4 is provided with a first fixed shaft 16 and a second fixed shaft 17, the middle part of the third connecting rod 8 is rotatably connected to the first fixed shaft 16, and the third connecting rod 8 can rotate around the first fixed shaft 16, and one end of the first connecting rod 5 is rotatably connected to the second fixed shaft 17, and the first connecting rod 5 can rotate around the second fixed shaft 17.

[0020] A connecting body 7 is provided on the rear door 2 of the vehicle compartment, one end of the second connecting rod 6 is hinged to the connecting body 7 , and the other end of the second connecting rod 6 is hinged to the first connecting rod 5 .

[0021] The first connecting rod 5 is connected to the second connecting rod 6 via a second hinge shaft 19, the second connecting rod 6 is connected to the connecting body 7 via a first hinge shaft 18, the fourth connecting rod 9 is connected to the first connecting rod 5 via a third hinge shaft 20, the fourth connecting rod 9 is connected to the third connecting rod 8 via a fourth hinge shaft 21, and the spring pull rod 10 is connected to the third connecting rod 8 via a fifth hinge shaft 22.

[0022] The bracket body 4 is provided with a pull rod through hole 14 through which the spring pull rod 10 can pass.

[0023] A center hole is provided on the spring pressure plate 11, and the spring pull rod 10 passes through the center hole on the spring pressure plate 11. The spring pull rod 10 is connected with a pressure plate limiting nut 13 for limiting the spring pressure plate 11. The limiting nut and the spring 12 are respectively located on both sides of the spring pressure plate 11.

[0024] like Figure 2 As shown, when the rear door is in a fully opened state, the angle between the first connecting rod 5 and the second connecting rod 6 is 20 to 30 degrees.

[0025] In the utility model, the spring 12 applies tension to the spring pull rod 10, the spring pull rod 10 applies tension to one end of the third connecting rod 8, the third connecting rod 8 applies tension to a certain position of the first connecting rod 5 through the fourth connecting rod 9, and the first connecting rod 5 applies tension to the rear door through the second connecting rod 6 so that the rear door generates a support torque opposite to the gravity torque, thereby balancing the gravity torque behind, slowing down the speed at which the rear door flips downward when opened, and making the rear door flip downward at a relatively gentle speed. The utility model applies support torque to the rear door through the connecting rod mechanism and the spring 12. Compared with the traditional gas spring 12 or oil-gas spring 12, the utility model does not have the problem of air leakage or oil leakage, is reliable to use, has a low failure rate, and has a long service life.

[0026] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A balancer device for supporting the rear door of a van, characterized in that: It includes a spring pull rod and a bracket body installed at the lower end of the rear part of the carriage. The bracket body is rotatably connected to a first connecting rod and a third connecting rod. A second connecting rod is arranged between the first connecting rod and the rear door of the carriage. One end of the spring pull rod is hinged to one end of the third connecting rod. A spring pressure plate is connected to the spring pull rod. A spring is arranged between the spring pressure plate and the bracket body. The other end of the third connecting rod is hinged to the first connecting rod.

2. A balancer device for supporting a rear door of a van according to claim 1, characterized in that: A connecting body is arranged on the rear door of the carriage, one end of the second connecting rod is hinged to the connecting body, and the other end of the second connecting rod is hinged to the first connecting rod.

3. A balancer device for supporting a rear door of a van according to claim 1, characterized in that: The bracket body is provided with a first fixed shaft and a second fixed shaft, the middle part of the third connecting rod is rotatably connected to the first fixed shaft, and one end of the first connecting rod is rotatably connected to the second fixed shaft.

4. A balancer device for supporting a rear door of a van according to claim 2, characterized in that: The first connecting rod is connected to the second connecting rod via a second hinge axis, the second connecting rod is connected to the connecting body via a first hinge axis, the fourth connecting rod is connected to the first connecting rod via a third hinge axis, and the fourth connecting rod is connected to the third connecting rod via a fourth hinge axis; the spring pull rod is connected to the third connecting rod via a fifth hinge axis.

5. The balancer device for supporting the rear door of a van according to claim 1, characterized in that: The bracket body is provided with a pull rod through hole through which the spring pull rod can pass.

6. A balancer device for supporting a rear door of a van according to claim 1, characterized in that: The spring pressure plate is provided with a center hole, the spring pull rod passes through the center hole of the spring pressure plate, and the spring pull rod is connected with a pressure plate limiting nut for limiting the spring pressure plate.

7. A balancer device for supporting a rear door of a van according to claim 1, characterized in that: When the rear door is in a fully opened state, the angle between the first connecting rod and the second connecting rod is 20 to 30 degrees.

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