Drawing string type air damper

Technical Field

The invention relates to a covering plate of the box for preventing quick opening pull rope type air damper, in particular for automobile glove box, the glove box when the lid is opened to prevent the quick opening of the caused by the deadweight, make it uniform opening.

Background Art

The Patent application number 201320295498. X Chinese Patent discloses a wire type air damper, the damper can be used for on the vehicle's dashboard is axially supported rotatable in the glove box, the damper comprises a cylinder, a cylinder cover, a pull wire, a return spring, the piston, O-shaped ring, the sealing ring and a enters the gas bag; the said damper is provided with the inner cavity of the cylinder body, the piston is mounted in the inner cavity, the piston is provided with a return spring, the upper end of the cover is connected to the cylinder, the return spring and the cable through the cover and is connected with the piston, at least one end of the cylinder the pull wire in the outer, in the middle of the tongue from the O-shaped ring of the valve function arranged on the piston, the sealing ring and the enters the gas bag arranged in sequence in the cylinder tail for the bottom of the barrel. The damper through the intake air inlet and the air inlet plug through the O-shaped ring and the tongue piece opening exhaust to realize the damping function.

The damper has the following defects:

1) damper form pieces of more, which causes high cost;

2) is installed in the bottom of the barrel and the air intake into, external dust is easy to adhere to and blocking the air vent, the damping caused by the bad;

3) O-shaped ring and the tongue on the exhaust noise when opening larger.

Content of the invention

In order to reduce the air damper parts, reduce the cost, reduce the exhaust noise, the present invention provides a pull rope type air damper, the air damper not only of the parts is reduced, and the cost is reduced, reducing the exhaust noise, but also can effectively improve the sensitivity of the damper, the damping retentivity.

The invention solves the technical problem by adopting the technical proposal is: drawing string type air damper, comprising a cylinder, a cylinder cover, the pull rope, the reset spring, piston, O-shaped, I-shaped valves; its design is characterized in that: the cylinder body is provided with the inner cavity, the inner cavity is provided with the piston, the piston is provided with a return spring, the upper end of the cylinder states the tube lid connected, in parallel through the return spring and the cover and is connected with the piston, at least one end of the pull rope in the outer cylinder, O-shaped ring is mounted in the piston ring groove on the circumference of the cylinder so that the piston with the inner wall surface to form a seal.

Further, the vent hole is arranged in the middle of the piston, the piston states the labor word valve in the outer sides of the end face of the each having the umbrella-shaped, I-shaped valve passes through the vent holes through said inner and outer umbrella-shaped end face of the piston can move up and down and connected with the vent hole, the outside end face of labor character valve covered on the outer side surface of the vent hole of the piston, the inner end face of the labor character valve covers the vent hole to the inner side of the piston, the piston and the vent hole of the labor character valve post is provided with a gap between. The piston arranged on the external side of the air inlet is connected with the vent hole, the outside end face of labor character valve covered on the jaws. Of the said piston is arranged on the inner side of the air discharge duct is connected with the vent hole, the inner end face of the labor character valve covered on the air discharge duct.

Further, the piston is provided with a spring seat, said reset spring is mounted on the piston of the spring seat.

Further, the piston is provided with a hook hole, one end of the pull rope on the hung on the hook hole, the other end of the pull rope extends out of the cylinder being used for hanging in the glove box cover on the hook.

Further, the cylinder through its mounting hole on the body of the glove is fixed by a screw on a screw.

The beneficial effect of the present invention is: to reduce the number of parts, simplify the structure, on the basis of lowering costs, improves the damping performance.

Description of drawings

The Figure below and embodiment of the invention further description.

Figure 1 is the outline drawing of the invention.

Figure 2 is the structure exploded view of the invention, showing the internal structure of the damper and the assembling relationship of each component.

Figure 3 is the cylinder structure diagram of the invention.

Figure 4 is the cover structure diagram of the invention.

Figure 5 is the piston structure diagram of the invention.

Figure 6 is the air discharge duct structure diagram of the inner side of the piston of the present invention.

Figure 7 is the air inlet structure diagram of the outer side surface of the piston of the present invention.

Figure 8 is the labor character valve structure diagram of the invention.

Figure 9 is the glove box closed state diagram of the snubber, demonstrate the damper pull rope is in a reset state.

Figure 10 is the glove box opening state diagram of the snubber, demonstrate the damper pull rope is in the pulled out state.

Figure 11 is the longitudinal section of the structure diagram of damper when opening the intake state.

Figure 12 is the longitudinal section of the structure diagram of the exhaust state when the damper is closed.

Specific embodiment:

With reference to Figure 1 - Figure 12, the following detailed description of the invention pull rope type air damper of the embodiment, but this embodiment example not for limiting of the present invention, where the invention of similar structure and its similar change, should be included in the scope of protection of the present invention.

Drawing string type air damper, comprising: a pull rope 1, a cover 2, a return spring 3, the piston 4, O-shaped ring 5, cylinder 6, labor character valve 7; the pull rope 1 two end decorative sleeve 11; the pull rope 1 through the line one end of the sleeve 11 is installed in the piston 4 of the hook hole 41, the pull rope 1 and the other end extending out of the cylinder 6 through a line outside the sleeve 11 and hung in a glove box cover 8 of the hook 81; the barrel 2, the through hole 21, is through the pull rope 1 is installed in the cylinder 6 and the upper end; a return spring 3, is through the pull rope 1 is installed in the piston 4 of the spring seat 42 on; the piston 4, is installed in the cylinder 6 of the inner cavity, the cylinder body 6 moves back and forth in; O-shaped ring 5, is installed in the piston 4 of the ring groove 48 in, the cylinder 6 of the mesh of the inner wall of the piston 4 between the peripheries of the seal; the cylinder 6, is internally provided with a cavity, holding each composing element; labor character valve 7, passes through the piston 4 of the air hole 43 through the inner and outer bevel end face 71 and 72 can move up and down and connected with the vent hole 43.

Figure 1 is the outline drawing of the present invention, illustrate the invention pull rope type air damper assembly after the completion of the state.

The main characteristic of each component are as follows:

As shown in Figure 3, the cylinder 6, the inside of the cavity, and an open end, a closed end; the cylinder 6 and the lower end of the outer wall is provided with a mounting hole 61, the cylinder 6 through the mounting hole 61 and screw-fixed to the glove box body 9 a screw 91 on; the cylinder 6 is provided with the upper portion of the tube body card hole 62, is located in the two side walls, for through the cover is provided with a hook 22 is connected with the cover 2.

As shown in Figure 5, Figure 6, Figure 7 shown, the piston 4 is provided with a hook hole 41, used for mounting the pull rope 1; piston 4 is arranged in the middle of the vent hole 43, the vent 43 and both ends of the outer side surface 44 and the inner side of the 45, the piston 4 of the outer side surface 44 is provided with a with the vent 43 is connected with the air inlet 46, the piston 4 of the inner side of the 45 is provided with a vent hole on the same 43 connected to the air discharge duct 47; the piston 4 is provided with a spring seat 42, a return spring 3 is installed in the piston 4 of the spring seat 42 on.

As shown in Figure 8, labor character valve 7, is made of elastic material, its column 73 with umbrella-shaped inner end face 71 and umbrella-shaped outer end surface 72, labor character valve 7 passes through the piston 4 of the air hole 43 through the inner and outer end faces 71 and 72 can move up and down and connected with the piston 4 the air vent 43, labor character valve 7 outside end face of the 72 covers the air inlet 46 above, labor character valve 7 the inner end face of the 71 covers the air discharge duct 47 above the, labor character valve fuels of 73 with the piston 4 the air vent 43 is provided with a gap between.

Pull rope damper assembly for a glove box in the following manner:

As shown in Figure 9, Figure 10 shown, drawing string type air damper through the cylinder 6 of the mounting hole 61 is fixed by a screw for glove box body 9 a screw 91 on, the pull rope 1 at one end of the trough with an 11 hanging in the glove box cover 8 of the hook 81 on.

Pull rope type damper work process as follows:

Usually the glove box in Figure 9 the off state. When the glove box cover 8 when, as shown in Figure 11, box cover 8 in the weight under the action of the moment around the shaft hole 82 rotates downward pulling force F1, the pulling force F1 through the pulling rope 1 pulls the piston 4 rises, the reset spring 3 is compressed, the piston 4 and the height of the cylinder 6 cavity produce negative pressure F2 (F2 is smaller than F1), under the action of negative pressure, labor character valve 7 is absorbed and move to inside, an outer end face 72 is pasted on the piston 4 of the outer side surface 44 and covers the air inlet 46 formed on a part of the intake tunnel, air in through the intake tunnel and labor character valve 7 of the post 73 and piston 4 the vent 43 into the gap between the cylinder 6 of the inner cavity, drawing string type air damper enters into the intake state; as the piston speed increases, because the intake tunnel is small, the intake air is not sufficient to pack the piston 4 to rise of the space, the vacuum in the cavity is increased, negative pressure F2 to increase, until the increased F2 with the reset spring 3 and the elasticity of the F1 after being the same as, the pull rope speed turns into uniform, glove box cover 8 the uniform rotation of the opening. When closing the glove box cover 8 when, as shown in Figure 12, the reset spring 3 under the action of the thrust force, the piston 4 moves downward so that the cylinder 6 cavity produce positive pressure, under the action of the positive pressure, labor character valve 7 is pushed to move outside, thus outside end 72 with the piston 4 of the outer side surface 44 to separate to form exhaust clearance, air through the piston 4 of the air discharge duct 47 and labor character valve 7 of the post 73 and piston 4 the vent 43 and the gap between the exhaust, drawing string type air damper into the exhaust state.

According to the glove box of the load size, can be provided with different size of the jaws, when the load of the can be provided with a small size of the jaws, the load of the hours of the jaws can be provided.

As the another embodiment of this invention, can be in the bottom of the cylinder inlet opening in order to replace the jaws on the piston, the same damping function can be realized.