CN211648903U

CN211648903U - Damping device

Info

Publication number: CN211648903U
Application number: CN202020185521.XU
Authority: CN
Inventors: 刘雷
Original assignee: Zhejiang Jin Lei Intelligent Technology Co ltd
Current assignee: Zhejiang Jin Lei Intelligent Technology Co ltd
Priority date: 2019-11-29
Filing date: 2020-02-19
Publication date: 2020-10-09
Anticipated expiration: 2030-02-19
Also published as: CN211901421U

Abstract

The utility model provides a damping, includes the cylinder body, floating piston and piston assembly, floating piston is portable to be set up and separates into air cavity and oil pocket with the cylinder body internal portion in the cylinder body, and piston assembly includes the piston rod and sets up the piston at the piston rod right-hand member, and the piston is portable to be set up in the oil pocket, and piston assembly's piston rod stretches out outside the cylinder body, is provided with on the piston to be used for forming damped through-hole, the utility model discloses a design is aerifyd to the single cylinder, and it has idle stroke and resistance inhomogeneous all can not produce because of there being floating piston at any angle, and last generation is that fluid is not full in the oil storage cylinder when double-cylinder product elongates to make the fluid compensation.

Description

Damping device

Technical Field

The utility model relates to an arm strength device damping.

Background

The resistance of the existing damper is generally not adjustable, is generally a fixed value and cannot be adapted to different users.

Chinese patent document CN208651511U discloses a hydraulic damper, which includes an outer cylinder, an inner cylinder and a piston assembly, wherein the inner cylinder is located in the outer cylinder, the piston assembly is installed in the inner cylinder, a flow cavity is formed between the inner cylinder and the outer cylinder, when the piston assembly is compressed, the flow cavity is used for storing redundant fluid discharged from the inner cylinder, when the piston assembly is stretched, the fluid in the flow cavity flows back to the inner cylinder, so that the fluid in the inner cylinder is always full and has uniform resistance, but when the damper is tilted to a certain angle, the fluid in the flow cavity cannot flow back to the inner cylinder in time, so that idle stroke and non-uniform resistance are generated.

Disclosure of Invention

In order to overcome the defects existing in the prior art, the utility model provides a no idle stroke damping.

The utility model provides a technical scheme that its technical problem adopted is:

a damper, characterized by: the piston assembly comprises a piston rod and a piston arranged at the right end of the piston rod, the piston is movably arranged in the oil cavity, the piston rod of the piston assembly extends out of the cylinder body, and a damping channel communicated with two sides of the piston is arranged on the piston assembly.

The cylinder body includes an oil storage section of thick bamboo, oil seal seat and connector, and the oil seal seat sets up the left end at an oil storage section of thick bamboo, and the connector setting is at the right-hand member of an oil storage section of thick bamboo, floating piston and piston can move the setting in an oil storage section of thick bamboo, form between floating piston and the connector the air cavity forms so the oil pocket between floating piston and the oil seal seat.

The piston rod is axially communicated with a center hole, a side wall hole which is close to the left side of the piston and communicated with the center hole of the piston rod is formed in the piston rod, and the side wall hole, the center hole and the right port of the center hole form the damping channel.

The piston is provided with a through hole and a deformable valve plate for sealing the through hole in a one-way mode.

The diameter of the right front section of the piston rod is reduced, and the right front section is sequentially sleeved with a valve sheet seat for mounting a valve sheet, the valve sheet and the piston and is locked and fixed through a locking nut.

The beneficial effects of the utility model are that:

1. the utility model is designed for single cylinder inflation, no idle stroke and uneven resistance can be generated due to the floating piston at any angle, and the previous generation is that the oil in the oil storage cylinder is not full when the double-cylinder product is elongated, so that the idle stroke is generated when the oil compensation is not in time, and the use angle of the product is limited;

2. nitrogen is filled in the oil to ensure that the oil is full, and the resistance is uniform and more comfortable when in use;

3. the oil storage cylinder, the connector and the adjusting knob are all made of aluminum alloy materials, so that the weight of the product is reduced, and the product is easier to use; the surface of the aluminum alloy material can be oxidized to any color, so that the aluminum alloy material is more attractive.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention, in which the piston rod is in an elongated state.

Fig. 2 is the schematic structural diagram of the present invention, and the piston rod is in a short-pressing state.

Fig. 3 is an enlarged view of the piston assembly of fig. 1.

Fig. 4 is an enlarged view of a portion of the piston assembly of fig. 2.

Detailed Description

Referring to fig. 1 to 4, an arm power damper includes a piston assembly 3, a cylinder 1, a floating piston 2, and a spring 4.

The piston assembly 3 includes a hollow piston rod 37, a piston 38, and an adjusting mechanism for adjusting the amount of resistance, and the hollow piston rod 37 has a central hole formed therethrough in the axial direction.

The cylinder body 1 comprises an oil storage cylinder 11, an oil seal seat 12 and a connector 13, the oil seal seat 12 is arranged at the left end of the oil storage cylinder 11, the connector 13 is arranged at the right end of the oil storage cylinder 11, the oil seal seat 12 is screwed with the thread of the oil storage cylinder 11, the connector 13 is screwed with the thread of the oil storage cylinder 11, the oil seal seat 12 and the connector 13 are matched to form a closed cylinder body 1, a floating piston 2 is movably arranged in the oil storage cylinder 11 and is hermetically connected with the inner wall of the oil storage cylinder 11, the floating piston 2 divides the interior of the cylinder body 1 into an air cavity A close to the connector 13 and an oil cavity B close to the oil seal seat 12, one side of the connector 13 close to the floating piston 2 is provided with an air chamber 132 for expanding the air cavity A, the other side of the connector is provided with an air nozzle 131 for inflating and deflating, the air cavity A is filled with nitrogen, the air cavity, the bottom of the air tap 131 is provided with a sealing rubber 133, the air tap 131 is provided with a bolt plug 134, and an O-ring 136 is arranged between the bolt plug 134 and the air tap 131.

The oil seal seat 12 is provided with a middle hole for the hollow piston rod 37 to pass through, an oil seal 121 and a wear-resistant shaft sleeve 122 are arranged in the middle hole, the hollow piston rod 37 passes through the oil seal 121, the wear-resistant shaft sleeve 122 extends into the oil storage cylinder 14, the piston 38 is arranged at the right end of the hollow piston rod 37, the piston 38 is connected with the inner wall of the oil storage cylinder 11 in a sealing mode, a through hole 381 is formed in the piston 38, a valve plate 383 used for mounting the valve plate 382 is arranged on the left side of the piston 38 and used for shielding the through hole 381 and enabling the valve plate 382 to be deformable, the diameter of the right front section 374 of the specific hollow piston rod 37 is reduced, and the right front section 374.

The spring 4 is sleeved outside the hollow piston rod 37, the left end of the spring is connected with the oil seal seat 12, the right end of the spring is connected with the right part of the hollow piston rod 37, and specifically, the right end of the spring 4 is connected to the valve plate seat 383.

The adjusting mechanism comprises an adjusting knob 31, an adjusting screw rod 32, a steel ball seat 33, an adjusting screw 34, an adjusting valve rod 35 and a hollow screw rod 36, the adjusting knob 31, the adjusting screw rod 32, the steel ball seat 33 and the adjusting screw 34 form a driving component of the adjusting valve rod 35, the adjusting valve rod 35 is positioned in the hollow piston rod 37, the left part of the adjusting valve rod 35 is hermetically connected with the hollow piston rod 37 through a sealing ring 353, an internal thread 372 is formed in the left section of the hollow piston rod 37, an external thread 332 is arranged at the tail part of the steel ball seat 33, the steel ball seat 33 is matched and installed at the left end of the hollow piston rod 37 through the external thread 332 and the internal thread 372, the hollow screw rod 36 is installed in the right end of the hollow piston rod 37, a central hole is formed in an axial direction in a penetrating manner on the head part of the adjusting screw rod 32, a sound spring 321 is, a plurality of steel ball grooves 331 are uniformly distributed on the end surface of the steel ball seat 33 along the circumferential direction, the steel balls 322 are extruded in the steel ball grooves 331 by the sound spring 321, the rod 323 of the adjusting screw 32 passes through the central hole of the steel ball seat 33, the rod 323 of the adjusting screw 32 is connected with the left end of the adjusting valve rod 35 through the adjusting screw 34, the adjusting screw 34 is provided with an external thread matched with the internal thread 372, the adjusting knob 31 is installed on the adjusting screw 32, the left end of the adjusting screw 34 is provided with a non-circular positioning hole 341, the rod 323 of the adjusting screw 32 extends into the positioning hole 341 and is matched with the shape 341 of the positioning hole, and the right end of the adjusting screw 34 is connected with the left end of the adjusting valve, the adjusting screw rod 32 is operated to rotate through the adjusting knob 31, the adjusting screw rod 32 rotates to drive the adjusting screw 34 to rotate, the adjusting screw 34 moves left and right, and therefore the adjusting valve rod is driven to move left and right.

The outer diameter of the right part 351 of the adjusting valve rod 35 is smaller than that of the left part, the outer diameter of the right part 351 of the adjusting valve rod 35 is larger than or equal to the inner diameter of the hollow screw rod 36, namely, the inner diameter of the hollow screw rod 36 is smaller than that of the hollow piston rod 37 to form a reducing part, the right end 352 of the adjusting valve rod 35 is in a taper shape and is matched with the inner cavity of the hollow screw rod 36, or the right end 352 of the adjusting valve rod 35 is matched with the reducing part.

A side wall hole 373 communicated with a central hole of the hollow piston rod 37 is arranged at the right part of the hollow piston rod 37, the side wall hole 373 is positioned at the left side of the piston 38 and is simultaneously communicated with the oil cavity B of the oil storage cylinder 11, the side wall hole 373, the central hole and a right port of the central hole form a damping channel communicated with two sides of the piston 38, the adjusting knob 31 drives the adjusting valve rod 35 to move left and right, the change of the gap size between the right end 352 of the adjusting valve rod 35 and the hollow screw rod 36 is realized, and the adjustment of the resistance; the hollow screw 36 is simultaneously communicated with the side wall hole 373 on the hollow piston rod 37 and the oil chamber B of the oil storage cylinder 11, when the hollow piston rod 37 is elongated, the valve plate 382 closes the through hole 381, simultaneously, oil on the left side of the piston 38 flows into the gap between the right part 351 of the adjusting valve rod and the hollow piston rod 37 from the side wall hole 373 on the hollow piston rod 37, and then flows into the oil chamber on the right side of the piston 38 from the gap between the adjusting valve rod 35 and the hollow screw 36, and simultaneously, nitrogen in the air chamber a pushes the floating piston 2 to move leftwards, so that the resistance is uniform and no idle stroke is achieved, the valve plate 382 enables the through hole 381 to flow in a single direction, and naturally, the valve plate 382 can be removed as required to enable the through hole 381 to flow in two.

When the hollow piston rod 37 is pressed short, the valve plate 382 opens the through hole 381, and at the same time, part of the oil on the right side of the piston 38 flows into the gap between the right end 352 of the adjusting valve rod 35 and the hollow screw rod 36, the gap between the right portion 351 of the adjusting valve rod and the hollow piston rod 37, and then flows into the oil chamber B on the left side of the piston 38 from the side wall hole 373 on the hollow piston rod 37, and at the same time, part of the oil flows into the oil chamber B on the left side of the piston 38 from the through hole 381 on the piston 38, and part of the oil pushes the floating piston 2 to move to the right, and.

The oil seal seat 12 is hermetically connected with the inner wall of the oil storage cylinder 11, the floating piston 2 is hermetically connected with the inner wall of the oil storage cylinder 11, and the connector 13 is hermetically connected with the inner wall of the oil storage cylinder 11 through O-shaped seal rings, and two O-shaped seal rings 353 are arranged between the left part of the adjusting valve rod 35 and the hollow piston rod 37; two O-shaped sealing rings 123 are arranged between the oil seal seat 12 and the oil storage cylinder 11, two O-shaped sealing rings 21 are arranged between the floating piston 2 and the inner wall of the oil storage cylinder 11, and two O-shaped sealing rings 137 are arranged between the connector 13 and the inner wall of the oil storage cylinder 11; the adjusting knob 31, the connector 13, the oil seal seat 12 and the oil storage cylinder 11 are all made of aluminum alloy, and the air tap 13 is a hexagonal air tap.

As shown in fig. 3 and 4, the arrow on the right side of the floating piston 38 is the movement direction of nitrogen, and the arrow on the left side of the floating piston 38 is the flow path of oil; the adjustment of the resistance can be achieved by rotating the adjustment knob 31. When the device is elongated, the volume of the oil storage space is increased, so that the nitrogen pushes the floating piston 2 to move leftwards, the oil in the oil storage cavity is full, and the resistance is uniform without idle stroke; when the pressure is short, the volume of the oil storage space is reduced, so that the oil liquid pushes the floating piston 2 to move rightwards, and the nitrogen is compressed, so that the oil liquid in the oil storage cavity is full, and the resistance is uniform without idle stroke. When the hollow piston rod 37 is elongated, the valve plate 382 shields the through hole 381 on the piston 38 under the pressure of oil, that is, the valve plate 382 is in a closed state, and when the hollow piston rod 37 is pressed for a short time, the valve plate 382 is separated from the through hole 381 on the piston 38 under the action of the oil, that is, the valve plate 382 is in an open state.

Since the adjustment knob 31 is rotated to move the adjustment valve rod 35, the right end 352 of the adjustment valve rod 35 is tapered, so that the gap between the right end 352 and the hollow screw 36 becomes large when moving leftward, and the gap becomes small when moving rightward, so that the resistance becomes large.

The utility model discloses a theory of operation does: the adjusting knob 31 is adjusted to drive the adjusting screw rod 32 to rotate, the adjusting screw rod 32 drives the adjusting valve rod 35 to move left and right through the adjusting screw 34, the adjusting valve rod 35 moves left and right to enable the gap between the adjusting valve rod 35 and the hollow screw rod 36 to be enlarged and reduced, the right end 352 of the adjusting valve rod 35 is in a taper shape, and therefore the flow is generated and the resistance of the adjusting valve rod is generated. The utility model is used for on the strength of arm, through rotatory adjust knob 31, reach different resistances, come the body-building of corresponding different demanders.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. A damper, characterized by: the piston assembly comprises a piston rod and a piston arranged at the right end of the piston rod, the piston is movably arranged in the oil cavity, the piston rod of the piston assembly extends out of the cylinder body, and a damping channel communicated with two sides of the piston is arranged on the piston assembly.

2. A damper according to claim 1, characterized in that: the cylinder body includes an oil storage section of thick bamboo, oil seal seat and connector, and the oil seal seat sets up the left end at an oil storage section of thick bamboo, and the connector setting is at the right-hand member of an oil storage section of thick bamboo, floating piston and piston can remove to set up in an oil storage section of thick bamboo, form between floating piston and the connector the air cavity forms between floating piston and the oil seal seat the oil pocket.

3. A damper according to claim 1, characterized in that: the piston rod is axially communicated with a center hole, a side wall hole which is close to the left side of the piston and communicated with the center hole of the piston rod is formed in the piston rod, and the side wall hole, the center hole and the right port of the center hole form the damping channel.

4. A damper according to claim 3, wherein: the piston is provided with a through hole and a deformable valve plate for sealing the through hole in a one-way mode.

5. A damper according to claim 4, wherein: the diameter of the right front section of the piston rod is reduced, and the right front section is sequentially sleeved with a valve sheet seat for mounting a valve sheet, the valve sheet and the piston and is locked and fixed through a locking nut.