CN2223375Y - Continuously adjustable single hydraulic damper - Google Patents

Abstract

The utility model provides a continuously adjustable single hydraulic damper, which is a hydraulic damper, particularly a hydraulic damper which is used for body-building apparatuses. The utility model is mainly composed of a piston cylinder, an external cylinder sleeve, a piston, a cylinder cover, overflow elements, a guiding element, and a regulating element, wherein, the piston is provided with an oil discharging hole, and installed an elastic baffle plate for the oil discharging hole; the cylinder cover is positioned at one end of the piston cylinder; the other end of the piston cylinder is installed the overflow elements. The joints of the oil paths of the guiding element and the regulating element are altered by regulating and rotating the guiding element, the changes of the quantities for transmitting of hydraulic oil can be caused, and thereby, the changes of damping forces are achieved. The utility model has the advantages of the structure is compact and reasonable; the size is small; the damping forces can realize a free non-stage static astatic regulation or a step-positioning regulation; the use is convenient, reliable, and smart.

Description

Continuous adjustable monomer hydraulic damper

The utility model relates to a kind of hydraulic damper, especially for the hydraulic damper of gymnastic apparatus.

The major defect of the single piston formula hydraulic damper existence of using in the gymnastic apparatus at present is that damping force is unadjustable, it is adjustable that Chinese patent CN92245106.0 has designed a kind of damping force for this reason " integrated type hydraulic damper; link to each other but its structure is a binary; volume increases greatly, thereby the configuration on gymnastic apparatus is used and has been subjected to limitation.

The purpose of this utility model provides a kind of free adjustable hydraulic damper of monomer-type applied widely in gymnastic apparatus.

The technical solution that realizes above-mentioned purpose is: carry out technological improvement on the basis of the monomer-type hydraulic damper that the piston rod that piston, the other end installation draw ring are installed by piston/cylinder, the piston that has the draining hole and an end constitutes.Promptly load onto draining hole baffle plate and holddown spring thereof in the bottom surface of piston; On the cylinder cap of piston/cylinder one end, establish axial draining hole, draining hole baffle plate and holddown spring are installed on the cylinder cap inner face, spill piece is installed in the another port of piston/cylinder, its center has the piston rod hole, have axial oil guide slot on the hole wall, the external diameter of spill piece becomes level Four, the first order and piston/cylinder internal diameter connect, the second level cooperates with the outer cylinder sheath internal diameter, and offer several axial oil guide slot on the outer side wall of the second level, third level diameter is slightly less than the second level, and the upper canister ring plane of its plane, foundation ring and guiding element connects, and offer ring recess from the superficial to the deep on the plane, foundation ring, the fourth stage then inserts in the center hole of guiding element; Have the axial oil guiding hole that matches with the ring recess of spill piece on the guiding element; Guiding element is by the adjusting element matched with it, the transmission of adjusting cover; The piston/cylinder outside is with outer cylinder sheath, remains with the gap between outer cylinder sheath inwall and the piston/cylinder outer wall.

Accompanying drawing 1 is a general structure schematic representation of the present utility model.

Accompanying drawing 2 is the positive view of Fig. 1 spill piece (13).

Accompanying drawing 3 is the worm's eye view of spill piece (13).

Accompanying drawing 4 is the positive view of guiding element among Fig. 1 (14).

Accompanying drawing 5 is the worm's eye view of guiding element (14).

Accompanying drawing 6 is the positive view of adjusting element among Fig. 1 (15).

Accompanying drawing 7 is the worm's eye view of adjusting element (15).

Accompanying drawing 8 is the front view that half slit bamboo or chopped wood is regulated cover (17) among Fig. 1.

Accompanying drawing 9 is the plan view that half slit bamboo or chopped wood is regulated cover (17).

The utility model is elaborated with an embodiment below in conjunction with accompanying drawing.

Outer cylinder sheath (11) constitutes one by cylindrical shell and capping (2), connecting cover (16).The bottom centre that is welded in the connecting cover (16) of cylindrical shell one end has the adjusting element mounting hole, the uniform steel ball locating slot of bottom periphery.In connecting cover (16), pack into successively adjusting element (15), guiding element (14) and spill piece (13).The center of spill piece (13) has piston rod hole (31), have axial oil guide slot (32) on the hole wall, its external diameter becomes level Four, the first order and piston/cylinder (7) internal diameter connects, the second level cooperates with the outer cylinder sheath internal diameter, and offer the axial oil guide slot in evenly spaced three roads (34) on the outer side wall of the second level, third level diameter is slightly less than the second level, the upper canister ring plane of its plane, foundation ring and guiding element (14) connects, and offer ring recess (33) from the superficial to the deep on the face of foundation ring, the fourth stage inserts in the center hole of guiding element (14).Have the axial oil guiding hole (37) that matches with the ring recess (33) of spill piece on the guiding element (14), its periphery wall is provided with seal groove (35), and the foundation ring face is provided with radially tongue-and-groove (36).Adjusting element (15) is a ladder cylindrical body, place rod seal leather cup (22), packing ring (23) and holddown spring (24) in the last cylinder, last cylinder circle face is provided with the tenon protruding (38) that matches with the tongue-and-groove (36) of guiding element, be provided with seal groove (39) side week, following barrel bore matches with piston rod (12) external diameter, has the tongue-and-groove (40) that matches with the tenon of regulating cover protruding (42) on the outer tube wall.One end of piston rod (12) is equipped with limiting stopper (20) and is connected with draw ring (1); The other end has screw thread, and is fastening with nut (8) after installing holddown spring (26), draining hole baffle plate (27) and being with the piston (10) in draining hole (28), and loads onto O RunddichtringO (9) in the piston periphery.Be inserted in piston/cylinder (7), and cylinder body one port is engaged with spill piece (13), the cylinder cap (4) that is provided with axial draining hole (30) is loaded onto in the another port, draining hole plate washer (5) and holddown spring (6) are installed on the interior edge face of cylinder cap (4), then are connected and fixed nut top board (3) on the exterior edge face with bolt (29).Then capping (2) is placed on the port and the solid welding of outer cylinder sheath (11), draw ring (1) is gone up in the outer welding again of capping (2), and at this moment, capping (2) is propped up and pushed down nut top board (3).Install at last and regulate cover (17), regulating cover (17) is by the involutory cylindrical cover that constitutes of two halves slit bamboo or chopped wood, be set in outside the connecting cover (16) of outer cylinder sheath, match with cylindrical body external diameter under the adjusting element that passes connecting cover (16) in cylindrical cover bottom center hole, inboard, bottom center hole is provided with tenon protruding (42) and can be embedded under the adjusting element in the tongue-and-groove on the cylinder outer wall (40), regulating cover foundation ring inner bottom surface radially, be provided with two grooves (45) symmetrically, place spring (19) and steel ball (18) in the groove, first sphere of steel ball (18) cooperates the location with the steel ball locating slot of connecting cover (16) bottom surface; It is to connect and fix with screw (21) with the tenon of establishing mutually protruding (41), tongue-and-groove (43) that the two halves slit bamboo or chopped wood is regulated cover, also is provided with elastic reinforcement circle caulking groove (44) on the cover body periphery; Regulate also to post on the cover outer circumferential face and regulate indication labeling (25).

The utility model working principle: the piston/cylinder interior or exterior space all is full of oil, when outside pulling piston rod (12), piston bottom surface baffle plate (27) pressurized is sealed draining hole (28), the interior oil of cylinder is entered between guiding element (14) and the adjusting element (15) by the oil guide slot in the spill piece (32), owing to be equipped with seal ring between guiding element and adjusting element external application face and the outer cylinder sheath, adjusting element (15) endoporus also has leather cup (22) sealing, thereby the axial oil guiding hole (37) that oil is forced through again in the guiding element imports in the ring recess (33) of spill piece, export through ring recess again, oil guide slot (34) enters in the oil pocket between outer cylinder sheath (11) and the piston/cylinder (7), oil pressure in oil pocket increases gradually, until the draining hole baffle plate (5) that promotes piston cylinder cover piston cylinder is carried out repairing.Said process has produced damping force.Because its groove depth continuously spiral of ring recess (33) of spill piece from the superficial to the deep, when regulating rotation guide (14), axial oil guiding hole (37) on the guiding element promptly constantly changes with the cross section relative engagement of spill piece ring recess (33), when cooperation place during at ring recess (33) deepest point, by the oil mass maximum, damping force minimum, otherwise damping force maximum.When inside push piston bar (12), damping force is minimum, because at this moment draining hole baffle plate (5) pressurized of cylinder cap (4) is closed, the oil at rear portion is promptly washed baffle plate (27) open rapidly to anterior repairing by vent piston oilhole (28) in the cylinder body.

The utility model compact structure is reasonable, volume is little, and damping force can realize stepless omnidirectional free adjustment or have the level location to regulate, and is easy to use, reliable, flexible.

Claims (9)

1, a kind of continuous adjustable monomer hydraulic damper, has piston/cylinder (7), the piston (10) and the end that have draining hole (28) are installed piston, the other end is installed the piston rod (12) of draw ring (1), draining hole baffle plate (27) and holddown spring (26) thereof are equipped with in the bottom surface that it is characterized in that piston (10), on the cylinder cap (4) of piston/cylinder (7) one ends, be provided with axial draining hole (30), draining hole baffle plate (5) and holddown spring (6) are installed on cylinder cap (4) interior edge face, the another port of piston/cylinder (7) is equipped with spill piece (13), its center has piston rod hole (31), offer axial oil guide slot (32) on the hole wall, the external diameter of spill piece (13) becomes level Four, the first order and piston/cylinder (7) internal diameter connects, the second level cooperates with outer cylinder sheath (11) internal diameter, and offer several axial oil guide slot (34) on the outer side wall of the second level, third level diameter is slightly less than the second level, its plane, foundation ring and guiding element 14) the upper canister ring plane connects, and offer ring recess (33) from the superficial to the deep on the plane, foundation ring, the fourth stage then inserts in the center hole of guiding element (14), have the axial oil guiding hole (37) that the ring recess (33) of spill piece matches on the guiding element (14), guiding element (14) is by the adjusting element matched with it (15), regulate cover (17) transmission, piston/cylinder (7) outside is with outer cylinder sheath (11), remains with the gap between outer cylinder sheath inwall and the piston/cylinder outer wall.

2,, it is characterized in that outer cylinder sheath (11) constitutes one by cylindrical shell and capping (2), connecting cover (16) by the described continuous adjustable monomer hydraulic damper of claim 1.

3, by the described continuous adjustable monomer hydraulic damper of claim 2, it is characterized in that the bottom centre of connecting cover (16) has the mounting hole of adjusting element (15), the locating slot of the uniform steel ball of bottom periphery (18).

4,, it is characterized in that being fixedly connected with a nut top board (3) with bolt (29) on the exterior edge face of piston/cylinder cylinder cap (4) by claim 1 or 3 described continuous adjustable monomer hydraulic dampers.

5, by the described continuous adjustable monomer hydraulic damper of claim 4, it is characterized in that the periphery wall of guiding element (14) is provided with seal groove (35), the foundation ring face is provided with radially tongue-and-groove (36).

6, by the described continuous adjustable monomer hydraulic damper of claim 5, it is characterized in that adjusting element (15) is a ladder cylindrical body, placement rod seal leather cup (22), packing ring (23) and holddown spring (24), last cylinder circle face are provided with the tenon protruding (38) that matches with the tongue-and-groove (36) of guiding element in the last cylinder, be provided with seal groove (39) side week, the doffing internal diameter matches with piston rod (12) external diameter, has the tongue-and-groove (40) that matches with the tenon of regulating cover protruding (42) on the outer tube wall.

7, by the described continuous adjustable monomer hydraulic damper of claim 6, it is characterized in that regulating cover (17) is involutory by the two halves slit bamboo or chopped wood and cylindrical cover that constitute, be set in outside the connecting cover of outer cylinder sheath, match with cylindrical body external diameter under the adjusting element that passes connecting cover (16) in cylindrical cover bottom center hole, be provided with the tenon protruding (42) that matches with the tongue-and-groove (40) of adjusting element in the bottom center hole, at the inner bottom surface of regulating the cover foundation ring radially, be arranged with two grooves (45), place spring (19) and steel ball (18) in the groove, first sphere of steel ball cooperates the location with the steel ball locating slot of connecting cover bottom surface.

8,, it is characterized in that it is to connect and fix with screw (21) with the tenon of establishing mutually protruding (41), tongue-and-groove (43) that the two halves slit bamboo or chopped wood is regulated cover, also is provided with stiffening ring caulking groove (44) on the cover body periphery by the described continuous adjustable monomer hydraulic damper of claim 7.

9,, it is characterized in that regulating also posting on the cover and regulate indication labeling (25) by the described continuous adjustable monomer hydraulic damper of claim 8.

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