CN201588833U

CN201588833U - Hydraulic cylinder adaptable to movable furniture

Info

Publication number: CN201588833U
Application number: CN2009202661427U
Authority: CN
Inventors: 卢俊民
Original assignee: Gslide Corp
Current assignee: Gslide Corp
Priority date: 2009-10-30
Filing date: 2009-10-30
Publication date: 2010-09-22
Anticipated expiration: 2019-10-30

Abstract

The utility model relates to a hydraulic cylinder adaptable to movable furniture. The front side of a piston rod thereof is tightly fixed with a rigid valve block and pivotally provided with a movable piston, when the piston rod contracts into the wall of the cylinder to slide forwards, the piston bears resistance of damping liquid and is guided by guide blocks thereof to slide so as to be abutted with the front end of the rigid valve block, and the damping liquid slowly passes through relative axial through holes of axial through holes of the rigid valve block to flow rearwards via portions of pluralities of axial through hole of the piston so as to lead the piston rod and the piston thereof to forwards slide smoothly via relatively large resistance together with the rigid valve block, thereby achieving a buffering function. When the piston rod extends out of the wall of the cylinder and slides rearwards at fast speed via relatively low resistance until the rigid valve block connected with the piston rod slides to a rear section portion of the wall of the cylinder, the rigid valve block rearwards pushes a shock absorbing piston so as to lead the shock absorbing piston to rub with the rear section portion of the wall of the cylinder by aid of an outer sealing ring of the shock absorbing piston and simultaneously pushes a front positioning base to rearwards compress a spring, thereby having the advantages of achieving a better shock absorbing function and reducing noise.

Description

Be applicable to the oil hydraulic cylinder of mobilizable furniture

Technical field

The utility model relates to a kind of oil hydraulic cylinder, specifically is meant a kind of oil hydraulic cylinder that is applicable to mobilizable furniture.

Background technique

U.S. US6,615, the 450B2 patent case has disclosed the cylinder pressure body and has been fixed on the furniture sidewall or on furniture top or the lower raft, and its piston rod can load on movable furniture part, perhaps the casing wall body also can be fixed on the external sliding rail of the drawer sliding rail of cabinet, piston rod then can load on interior slide rail, the buffer function when closing to reach drawer; Yet through looking into this case in use, piston rod forward during slippage (in the casing wall of withdrawing time) though can increase resistance by pressure spring, yet, and cooperate the reversion strength slippage backward (when promptly stretching out casing wall) of spring though can reach the function of reduction noise by the tubular body position (tube-section-like part) that the elastic material of extruding high-compressibility is made when piston rod when the oversize disappearance that causes slippage to have some setbacks easily of distance of pressure spring; Yet it is then relatively poor through looking into its shock-proof effect.

In view of this utility model person through constantly research and improvement, designs a kind of oil hydraulic cylinder that is applicable to mobilizable furniture finally.

The model utility content

Main purpose of the present utility model provides a kind of oil hydraulic cylinder that is applicable to mobilizable furniture, slippage action in its piston rod withdrawal casing wall has smooth-going pooling feature, the slippage that piston rod stretches out casing wall moves that then resistance is little, speed is fast, and shock absorbing apparatus has incabloc function and the advantage that reduces noise.

In order to realize above-mentioned purpose, the oil hydraulic cylinder that is applicable to mobilizable furniture of the present utility model is characterized in, is to include:

The cylinder pressure body, the front side of its casing wall and rear side are all open slotted eye, and this casing wall is then for the piston rod linear reciprocation slippage that is provided with piston, and its front openings end links fixing with protecgulum for injecting damp liquid again;

Protecgulum is the front openings end that is linked to the cylinder pressure body;

Cylinder cap is the rear openings end that is linked to the cylinder pressure body, and has an axis hole and a circular groove that communicates with this axis hole that the body of rod for piston rod passes, and this circular groove then is provided with a seal ring that can be worn by the body of rod of piston rod;

Piston rod, tie-rod body front side has than the small axle diameter position for a urgent rigid valve piece and the mobilizable piston that is pivoted fixed, this rigid valve piece is positioned at the rear side of piston and forms spacing mutually, should have a block piece, the set piston of adjacent this piston rod of this block piece than the front side at small axle diameter position;

Piston, cording pivot groove is hubbed at the front side of piston rod, and its external diameter is slightly less than the internal diameter of the casing wall of cylinder pressure body, and is preferable with plastic material, and this piston is provided with several axial holes;

The rigid valve piece, system is fixedly arranged on piston rod and just is positioned at the rear side of piston, its external diameter is smaller than the internal diameter of the casing wall of cylinder pressure body, and and casing wall between form bigger gap, this rigid valve piece is provided with several axial holes in addition, and each axial hole system faces mutually with the section axial through hole wherein of several axial holes of piston.

The anterolateral system than the small axle diameter position of this piston rod has positioning ditch, is embedded block piece.

This piston system is provided with in addition and protrudes in several guide blocks of end face thereafter, and each guide block system imports respectively in each set guide groove of rigid valve piece, make piston can before and after straight-line displacement but can not rotate.

The rear side of this rigid valve piece is tied to form taper.

The rear side of this rigid valve piece is tied to form skewed.

The back segment position of this oil hydraulic cylinder further has additional shock absorbing apparatus, and this shock absorbing apparatus system includes:

The shock-absorbing piston, tie up to the back segment position slippage of the casing wall of cylinder pressure body, the positioning groove that this shock-absorbing piston has outer ring chase, interior annular groove and connects the rear end of annular groove in this, this outer ring chase is embedded an outer seal ring, annular groove then is embedded an inner seal ring in it, and this inner seal ring is worn by the body of rod of piston rod;

The prelocalization seat, but the front side that cording has an ammunition feed spring against axial region and the positioning part that is connected in the front side of axial region, the corresponding positioning groove that embeds the shock-absorbing piston in this positioning part, this prelocalization seat have axial slots and wear for the body of rod of piston rod;

Spring, be the front side against the prelocalization seat and rear side against the back positioning seat;

Back positioning seat, cording has the rear side of ammunition feed spring to support the axial region of cover and the positioning part that is connected in the rear side of axial region, this corresponding positioning groove that embeds cylinder cap of positioning part system, this positioning groove system is communicated with the circular groove of the front side of this cylinder cap, and the body of rod of this back positioning seat with axial slots confession piston rod wears in addition.

The back segment position system of this shock-absorbing piston is provided with the slippage stroke of the recessed edge in a location with restriction shock-absorbing piston.

The utlity model has following useful technique effect:

1, in the casing wall of its piston rod withdrawal cylinder pressure body and forward can big resistance slippage during slippage, and reach the pooling feature of steady and smooth.

2, when piston rod stretch out the cylinder pressure body casing wall and backward during slippage, resistance fast speeds slippage that can be less, and reach incabloc function and the advantage that reduces noise by shock absorbing apparatus.

Description of drawings

Fig. 1 is the utility model embodiment's a three-dimensional exploded view.

Fig. 2 is the utility model embodiment's a stereogram.

Fig. 3 is another angle three-dimensional exploded view of the utility model embodiment.

Fig. 4 is another angle stereogram of the utility model embodiment.

Fig. 5 is the sectional schematic diagram of the utility model embodiment when wherein rigid valve piece and piston form spacing.

Fig. 6 is the utility model embodiment another angle part sectional schematic diagram when wherein rigid valve piece and piston form spacing.

Fig. 7 is the sectional schematic diagram of the utility model embodiment when wherein rigid valve piece front end is by piston abuts.

Embodiment

As Fig. 1～shown in Figure 7, a kind of oil hydraulic cylinder that is applicable to mobilizable furniture of the utility model is to include:

Cylinder pressure body 1, the front side of its casing wall 11 and rear side are all open slotted eye, 11 of this casing walls can be for the piston rod 4 linear reciprocation slippages that are provided with piston 5, and its front openings end 111 (with reference to figure 7) can link with protecgulum 2 with ultrasound or alternate manner and fixes for injecting damp liquid (figure does not show);

Protecgulum 2 is the front openings end 111 (with reference to figure 3, Fig. 7) that is linked to cylinder pressure body 1;

Cylinder cap 3, system is linked to the rear openings end 112 of cylinder pressure body 1, and have the axis hole 31 and a circular groove 32 that communicates with this axis hole 31 that can pass for the body of rod 41 of

piston rod

4,32 of this circular grooves are provided with a seal ring 30 that can be worn by the body of rod 41 of piston rod 4, and this cylinder cap 3 is to link fixing with ultrasound or alternate manner;

Piston rod 4, tie-rod body 41 front sides have than small axle diameter position 411 fixes a rigid valve piece 6 and mobilizable piston 5 that is pivoted for urgent, make this rigid valve piece 6 be positioned at the rear side and the mutual spacing that forms of piston 5, this has the positioning ditch 4111 that is positioned at its front side than small axle diameter position 411 can be for being embedded a block piece 412, the piston 5 that adjacent this piston rod of this block piece 412 4 is set;

Piston 5, cording pivot groove 50 is hubbed at the front side of piston rod 41, its external diameter is slightly less than the internal diameter of the casing wall 11 of cylinder pressure body 1, and be preferable with plastic material, this piston 5 is provided with several axial holes 51 and protrudes in several guide blocks 52 of end face thereafter, its each guide block 52 is the guide groove 61 that imports rigid valve piece 6 respectively, make piston 5 can before and after straight-line displacement but can not rotate;

Rigid valve piece 6, system is fixedly arranged on piston rod 4 and just is positioned at the rear side of piston 5, its external diameter is smaller than the internal diameter of the casing wall 11 of cylinder pressure body 1, and and casing wall 11 between form bigger gap, this rigid valve piece 6 is provided with several guide grooves 61 (with reference to figure 1, Fig. 6), each guide groove 61 can import for the guide block 52 of piston 5, and this rigid valve piece 6 is provided with several axial holes 62 in addition in addition, and each axial hole 62 is to face mutually with the section axial through hole 51 wherein of several axial holes 51 of piston 5;

Composition by aforementioned components, when piston rod 4 stretches out casing wall 11 and backward during slippage, but bear the guiding of its each guide block 52 of piston 5 mats of resistance of damp liquid and slippage forward, the front end that makes this piston 5 is can be by 412 backstops of piston rod 4 set block pieces, and make between the rear end 53 of piston 5 and the rigid valve piece 6 and form spacing (with reference to figure 5), and then make damp liquid flow forward via the gap that forms between this rigid valve piece 6 and the piston 5 each axial hole 51 by each axial hole 62 or the gap between rigid valve piece 6 and the casing wall 11 of rigid valve piece 6 by piston 5, and make piston rod 4 pistons 5 set with it, rigid valve piece 6 can less resistance, fast speeds is slippage backward; Again when slippage in the piston rod 4 withdrawal casing walls 11 and forward, the slippage and but piston 5 bears the guiding of its each guide block 52 of resistance mat of damp liquid against the front end (with reference to figure 7) of rigid valve piece 6, therefore the axial hole 51 that damp liquid is can only be by the axial hole 62 of the wherein part of several axial holes 51 of piston 5 and rigid valve piece 6 relative slowly by and flow backward, thereby make piston rod 4 and set piston thereof 5 and the rigid valve piece 6 can be, and reach pooling feature with big resistance slippage forward; For instance, if cylinder pressure body 1 of the present utility model is the external sliding rail (figure does not show) that is fixed on drawer sliding rail, the rear side 44 of piston rod 4 then is can be by interior slide rail (figure does not show) interlock, when interior slide rail together with piston rod 4 backward can be less during slippage resistance, fast speeds slippage backward, otherwise, then resistance is bigger during slippage forward together with piston rod 4 when interior slide rail, slowly slippage forward of speed that can be slower relatively, and in the order slide rail together with the drawer of its binding backward slippage have pooling feature.

Moreover, the rear side 64 of aforementioned rigid valve piece 6 is tied to form taper or skewed, when it can reduce resistance together with piston rod 4 during by slippage backward, each axial hole 62 of this rigid valve piece 6 then is that less back, the aperture of front side lateral aperture is bigger, after making damp liquid by forward direction by the time speed very fast and resistance is less, damp liquid by after then slow resistance of speed is bigger when flowing forward.

Person in addition, the aforementioned oil hydraulic cylinder of mobilizable furniture that is applicable to can further be set up shock absorbing apparatus 7, and this shock absorbing apparatus 7 is to include:

Shock-absorbing piston 71, system can be in the back segment position slippage of the casing wall 11 of cylinder pressure body 1, and casing wall 11 has the slippage stroke of the recessed edge 113 in location with restriction shock-absorbing piston 71, the positioning groove 713 that this shock-absorbing piston 71 has outer ring chase 711, interior annular groove 712 and connects the rear end of annular groove 712 in this, can be by this outer ring chase 711 for being embedded an outer seal ring 75, annular groove 712 then can be for being embedded an inner seal ring 76 in it, this inner seal ring 76 can be worn by the body of rod 41 of piston rod 4, and this shock-absorbing piston 7 can adopt copper, plastics or other metal material;

Prelocalization seat 72, but the front side that cording has an ammunition feed spring 73 against axial region 721 and the positioning part 722 that is connected in the front side of axial region 721, this positioning part 722 can the corresponding positioning groove 713 that embeds shock-absorbing piston 71, and this prelocalization seat 72 has axial slots 723 and can wear for the body of rod 41 of piston rod 4;

Spring 73, be the front side against prelocalization seat 72 and rear side against the back positioning seat 74;

Back positioning seat 74, but cording has the rear side of ammunition feed spring 73 to support the axial region 741 of cover and the positioning part 742 that is connected in the rear side of axial region 741, this positioning part 742 is can the corresponding positioning groove 33 that embeds cylinder cap 3, this positioning groove 33 is to be communicated with the circular groove 32 of the front side of this cylinder cap 3, and this back positioning seat 74 has axial slots 743 and can wear for the body of rod 41 of piston rod 4 in addition;

Shock absorbing apparatus 7 by the aforementioned components composition, when piston rod 4 stretches out casing wall 11 and with less resistance, fast speeds is slippage backward, until the rigid valve piece 6 that linked of piston rod 4 is when sliding onto the back segment position of casing wall 11, can mat rigid valve piece 6 push up backward and move shock-absorbing piston 71, and make the back segment position of its outer seal ring of shock-absorbing piston 71 mats 75 friction casing walls 11, and simultaneously also the top is moved prelocalization seat 72 and is being compressed spring 73 backward, and reach preferable incabloc function and the advantage that reduces noise, and because shock-absorbing piston 71 is provided with outer seal ring 75, and and inner seal ring 76 can prevent in the back segment position of damp liquid by infiltration casing wall 11 between shock-absorbing piston 71 and the casing wall 11 or between shock-absorbing piston 71 and the piston rod 4.

In sum, the utility model can be concluded and be had following enhancement effect:

1, in the casing wall 11 of piston rod 4 withdrawal cylinder pressure bodies 1 and forward can big resistance slippage during slippage, and reach the pooling feature of steady and smooth.

2, piston rod 4 stretch out cylinder pressure body 1 casing wall 11 and backward during slippage, resistance fast speeds slippage that can be less, and reach incabloc function and the advantage that reduces noise by shock absorbing apparatus 7.

Therefore, the utility model has its practical effect of promoting really.

Yet, the above only is preferred embodiment of the present utility model, when can not with the scope implemented of qualification the utility model, the equalization that all acts are done according to the utility model claim changes with modifying and all should still belong in the claim that the utility model contains.

Claims

1. an oil hydraulic cylinder that is applicable to mobilizable furniture is characterized in that, is to include:

Piston, cording pivot groove is hubbed at the front side of piston rod, and its external diameter is slightly less than the internal diameter of the casing wall of cylinder pressure body, and this piston is provided with several axial holes;

The rigid valve piece, system is fixedly arranged on piston rod and just is positioned at the rear side of piston, its external diameter is smaller than the internal diameter of the casing wall of cylinder pressure body, and and casing wall between form the gap, this rigid valve piece is provided with several axial holes in addition, and each axial hole system faces mutually with the section axial through hole wherein of several axial holes of piston.

2. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 1 is characterized in that, the anterolateral system than the small axle diameter position of this piston rod has positioning ditch, is embedded block piece.

3. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 1 is characterized in that, this piston system is provided with in addition and protrudes in several guide blocks of end face thereafter, and each guide block system imports respectively in each set guide groove of rigid valve piece.

4. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 1 is characterized in that the rear side of this rigid valve piece is tied to form taper.

5. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 1 is characterized in that the rear side of this rigid valve piece is tied to form skewed.

6. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 1 is characterized in that, the back segment position of this oil hydraulic cylinder further has additional shock absorbing apparatus, and this shock absorbing apparatus system includes:

7. the oil hydraulic cylinder that is applicable to mobilizable furniture as claimed in claim 6 is characterized in that, the back segment position system of this shock-absorbing piston is provided with the recessed edge in a location.