CN208565393U

CN208565393U - Damper

Info

Publication number: CN208565393U
Application number: CN201821153478.8U
Authority: CN
Inventors: 何亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-07-20
Filing date: 2018-07-20
Publication date: 2019-03-01
Anticipated expiration: 2028-07-20

Abstract

The utility model discloses a kind of dampers, comprising: tubular shell；End cap；Bearing is set to the inner cavity of the tubular shell；Piston component comprising piston and bar；And compensation film, it is the cup-shaped sleeve structure for the deformable material being sheathed on the bar, the inner wall sealed connection of the opening portion of cup-shaped sleeve and the tubular shell, the bottom of cup-shaped sleeve and the bar are tightly connected；Wherein, the inner cavity of the tubular shell is successively divided into compensated chamber, storage compartment and pressure chamber to closed end from its open end by the compensation film and piston, and at least one is provided on the piston component for being connected to the fluid path of storage compartment and pressure chamber, the bearing is provided at least one for being connected to the fluid path of its two sides.The beneficial effects of the utility model include: compensation film to provide pressure compensation when damper work, to the pressure medium good airproof performance in damper.

Description

Damper

Technical field

The utility model relates to a kind of dampers.

Background technique

Damper is to provide the resistance of movement, the device of depletion kinergety.It mainly include tubular shell piston, work Stopper rod, and it is filled in the intracorporal pressure medium of tubular shell, pressure medium leaks out in order to prevent, and tubular shell generally seals knot Structure, but when work, piston and piston rod move up and down, and piston rod can change in the intracorporal volume of tubular shell, lead to tubulose The space for belonging to pressure medium in shell changes, i.e., pressure changes in tubular shell, influences the normal work of damper Make.Therefore it needs to carry out certain compensation for aforementioned pressure variation.

Utility model content

The purpose of the utility model is to overcome above-mentioned technical deficiencies, propose a kind of damper, and solution hinders in the prior art The technical issues of Buddhist nun's device needs certain pressure compensation when working.

To reach above-mentioned technical purpose, the technical solution of the utility model provides a kind of damper, comprising:

Tubular shell, one end closing, another end opening；

End cap is set to the open end of the tubular shell；

Bearing is set to the inner cavity of the tubular shell；

Piston component comprising piston and bar, the piston are set to the inner cavity of the tubular shell and can be along the pipes The inner wall of shape shell makees reciprocating sliding movement；Described bar one end sequentially passes through the end cap and bearing and connect with the piston； And

Compensation film is the cup-shaped sleeve structure for the deformable material being sheathed on the bar, the opening portion of cup-shaped sleeve It is tightly connected with the inner wall of the tubular shell, the bottom of cup-shaped sleeve and the bar are tightly connected；

Wherein, the inner cavity of the tubular shell is successively divided by the compensation film and piston from its open end to closed end Compensated chamber, storage compartment and pressure chamber, and at least one is provided on the piston component for being connected to storage compartment and pressure chamber Fluid path, the bearing are provided at least one for being connected to the fluid path of its two sides.

Compared with prior art, the beneficial effects of the utility model include: that compensation film provides pressure when working for damper Force compensating, to the pressure medium good airproof performance in damper；The bearing for improving structure makes the motion stabilization of piston rod, can also help The stability and leakproofness for improving compensation film, can preferably control pressure medium storage and more it is simple more thoroughly exclude it is extra Air.

Detailed description of the invention

Fig. 1 is a kind of use state diagram of damper of the utility model；

Fig. 2 is the schematic cross-sectional view of Fig. 1；

Fig. 3 is the damper another kind use state diagram of the utility model；

Fig. 4 is the schematic cross-sectional view of Fig. 3；

Fig. 5 is the schematic cross-sectional view of compensation film positioning tube；

Fig. 6 is the top view of compensation film positioning tube；

Fig. 7 is the schematic perspective view of compensation film positioning tube

Fig. 8 is a kind of schematic perspective view of embodiment of compensation film；

Fig. 9 is a kind of schematic cross-sectional view of embodiment of compensation film；

Figure 10 is the schematic perspective view of compensation film another embodiment；

Figure 11 is the schematic cross-sectional view of compensation film another embodiment；

Figure 12 is the schematic perspective view of bearing；

Figure 13 is the schematic cross-sectional view of bearing.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figure 1 to 4, the utility model provides a kind of damper, comprising: tubular shell 10, end cap 20, bearing 30, piston component 40 and compensation film 50.

Tubular shell 10 is closed at one end, another end opening；End cap 20 is set to the open end of the tubular shell 10；Bearing 30 Set on the inner cavity of the tubular shell 10.

Piston component 40 includes piston 41 and bar 42, and the piston 41 is set to the inner cavity of the tubular shell 10 and can edge The inner wall of the tubular shell 10 makees reciprocating sliding movement；Described 42 one end of bar sequentially pass through the end cap 20 and bearing 30 and with The piston 41 connects.

Compensation film 50 is the cup-shaped sleeve structure for the deformable material being sheathed on the bar 42, the opening portion of cup-shaped sleeve 51 are tightly connected with the inner wall of the tubular shell 10, and the bottom 52 of cup-shaped sleeve and the bar 42 are tightly connected.

Wherein, the compensation film 50 and piston 41 by the inner cavity of the tubular shell 10 from its open end to closed end successively Be divided into compensated chamber 11, storage compartment 12 and pressure chamber 13, and be provided on the piston component 40 at least one for be connected to storage Expect that the fluid path of room 12 and pressure chamber 13, the bearing 30 are provided at least one for being connected to the fluid path of its two sides.

When the present embodiment damper assembles, piston 41 is connect with bar 42, constitute piston component 40, piston 41 is pushed into and is managed Shape shell 10, then on bar 42 and it is packed into tubular shell 10 30 sets of bearing, then compensation film 50 is sheathed on bar 42, and makes It, which is open, is sent into tubular shell 10 towards the closed end of tubular shell 10, and injection pressure medium finally uses 20 closed tube of end cap The open end of shell 10 is arranged reset spring etc. on the bar 42 outside tubular shell 10, completes assembly.Wherein, injection pressure is situated between When matter, piston 41 can be first pushed into the closed end of tubular shell 10, then inject pressure into storage compartment 12 and pressure chamber 13 again Power media, pressure medium can be pressure oil, be also possible to inert gas.

When the present embodiment damper works, the pressure born can drive piston component 40 by the open end of tubular shell 10 End motion is closed to it, and the medium stored in pressure chamber 13 can then move in storage compartment 12 along the fluid path of piston 41, And the fluid path through bearing 30 comes compensation film 50.And after damper pressure disappears, as shown in figs. 34, in bullet Under spring 70 acts on, piston component 40 is from the closed end of tubular shell 10 to its end motion that is open, so that in storage compartment 12 Medium is flowed back in pressure chamber 13 by fluid path.With gradually exiting for bar 42, the storage of stuffing pressure medium in tubular shell 10 Material room 12 and pressure chamber 13 will form certain vacuum degree, if the vacuum degree is excessive, the negative pressure of generation will affect piston component 40 Reset, at this time compensation film 50 can be deformed under the influence of negative pressure into storage compartment 12, exit tubular shell 10 to compensate bar 42 Caused by space lack, to realize vacuum compensation.

Preferably, being provided at least one on the end cap 20 for being connected to the stream of compensated chamber 11 and exterior Body path so that compensated chamber 11 is connected to outside, such as other fluid storage devices, or is directly connected to atmosphere, enhancing compensation The compensation effect of film 50.

As shown in Figure 2 and Figure 4, the damper further includes that the compensation film being adapted with the internal diameter of the tubular shell 10 is determined Position cylinder 60, the opening portion 51 of the compensation film 50, which has, thickeies outer rim 511, and described 60 one end of compensation film positioning tube is connected to described End cap 20, the other end are connected to the thickening outer rim 511 of 50 opening portion 51 of compensation film, make the opening portion 51 of the compensation film 50 It is connected to the junction of the bearing 30 and 10 inner wall of tubular shell.Compensation film positioning tube 60 can be preferably real to compensation film 50 It now positions, while also indirect stabilization bearing 30.10 internal diameter of tubular shell can (i.e. bearing surface be mutually managed in the another side of bearing 30 The one side of 10 closed end of shape shell) setting variable diameter, to be limited to bearing 30.

The open end of the tubular shell 10 has radial turn-up portion 14, is used for the compensation film positioning tube 60, compensation Film 50, bearing 30, which squeeze, to be fixed.When damper encapsulates, the opening of tubular shell 10 can be under mould action to in-flanges, flange Compensation film positioning tube 60, compensation film 50, bearing 30 are squeezed and are fixed by portion 14, and axial compressive force is generated when encapsulating flange makes compensation film 50 Opening portion 51 be pressurized, and then have the function that reinforce sealing.

As shown in figure 5, one end that the compensation film positioning tube 60 abuts the end cap 20 is to support to the annular radially extended Socket part 61, the annular abutment 61 are provided at least one for being connected to the fluid path of its two sides.Compensation film positioning tube 60 Annular abutment 61 can make it bigger with the contact surface of end cap 20, and the stress of end cap 20 can be more evenly.Meanwhile compensation film positions The annular abutment 61 of cylinder 60 can also limit 52 to the bottom of compensation film 50, bottom 52 can be made to be bonded with bar 42 closer, Better tightness.At least one of the setting of annular abutment 61 guarantees compensated chamber 11 still for being connected to the fluid path of its two sides It can be connected to outside.

As shown in Fig. 5~7, the annular abutment 61 of the compensation film positioning tube 60 is equipped with deep gouge 611 at least one, described The through-hole 612 through 61 two sides of annular abutment is equipped in deep gouge 611.The combination of through-hole 612 and deep gouge 611 constitutes one The fluid path of kind connection 61 two sides of annular abutment.

As shown in Figure 2 and Figure 4,20 outer diameter of end cap is less than the internal diameter of institute's tubular shell 10, and the compensation film positions 611 part of deep gouge that the annular abutment 61 of cylinder 60 is arranged is covered by the end cap 20, i.e., the described end cap 20 only covers deep gouge 611 A part so that the annular abutment 61 of the compensation film positioning tube 60 be the end cap 20 enough supports are provided, and At this point, the outer diameter outer rim of end cap 20 constituted with the deep gouge 611 of compensation film positioning tube 60 it is a kind of for being connected to 20 two sides of end cap Effective fluid path guarantees that compensated chamber 11 can be connected to outside.The end cap 20 with the annular abutment 61 for abutting against Part can be Flange-shaped Parts, with increase the end cap 20 for abutting area, the stability of enhancing structure.

As shown in Figure 8 to Figure 11, the bottom 52 of the compensation film 50 has along its axial extension 521, the end cap 20 have accommodate the extension 521 annular gaps 21, the annular gap 21 make the extension 521 of the compensation film 50 with it is described Bar 42 fits closely.The extension 521 of compensation film 50 increases the contact area of itself and bar 42, that is, leakproofness, end cap can be improved 20 annular gap 21 is the extension 521 of compensation film 50 while provide limit space, help improve extension 521 with it is described The laminating degree of bar 42.

As shown in Figure 2 and Figure 4, the annular gap 21 of the end cap 20 deepens along axial direction and forms end cap 20 along its axial direction Lug boss 22.The annular gap 21 of end cap 20 can be such that the extension 521 of compensation film 50 enters more, increase along axial intensification The area that big extension 521 and bar 42 fit closely, that is, further improve leakproofness.Also, what therefore end cap 20 was formed Lug boss 22 can protrude into spring 70, stabilization when abutting convenient for spring 70 with end cap 20.

The inner and outer wall of the extension 521 coaxially formed interior sealing 521a and the outer seal portion having in a ring respectively 521b.The interior sealing 521a and outer seal portion 521b is also possible to two or more layers, such as Fig. 8 and Fig. 9, the more leakproofness of the number of plies It is stronger；The interior sealing 521a and outer seal portion 521b can be one layer, easy to produce such as Figure 10 and Figure 11.The interior sealing 521a and the portion external seal 521b are interference fitted with the annular gap 21 of the bar 42 and the end cap 20 respectively.Extension 521 Interior sealing 521a and outer seal portion 521b is more easily implemented the interference between extension 521 and the bar 42 and the end cap 20 Cooperation, in order to guarantee leakproofness.And it is possible to which interior sealing 521a and outer seal portion 521b are contemplated that setting is more A, level is more, and leakproofness is better.

Preferably, the cross section of the interior sealing 521a and outer seal portion 521b be in width from top to bottom gradually The wedge shape or width of increase may make interior sealing 521a and outer seal portion 521b by the diminishing shuttle shape in middle part to both ends It is reduced respectively with the contact area of bar 42 and end cap 20, so that interior sealing 521a and outer seal portion 521b has centainly Deformation space, in the extruding force for guaranteeing that deformation can be minimized on the basis of sealing.And work as the interior sealing 521a and external seal When the cross section of portion 521b is in shuttle shape, width maximum is close to its lower end.It can stored up convenient for the extension 521 of compensation film 50 What interior sealing 412 and outer seal portion 413 can be even closer under the action of medium in material room 12 is connected to 32 outer peripheral surface of bar With 20 inner wall of end cap.

It is also possible that the cross section of the interior sealing 521a and outer seal portion 521b is triangular in shape, and it is located at institute The base angle for stating 20 side of end cap is 10~17 °, and the base angle positioned at 30 side of bearing is 27~35 °.It, which can guarantee, is located at storage Expect one of face of the medium squeeze of room 12 triangle and makes interior sealing 521a and outer seal portion 521b can be more Add and is closely connected to 20 inner wall of 42 outer peripheral surface of bar and end cap.

As shown in Figure 12 and Figure 13, the bearing 30 includes the shaft sleeve part 31 that is sheathed on the bar 42, and is fixedly connected In the support portion 32 of 10 inner wall of tubular shell；The support portion 32 has opening portion 51 and the tubulose for making the compensation film 50 The ring-shaped step 321 that 10 inner wall of shell fits closely.Shaft sleeve part 31 along the bar 42 axial direction have certain length, can make its with The contact surface of bar 42 suitably increases, to improve stability when bar 42 does piston motion.And further, shaft sleeve part 31 can To be matched to the annular abutment 61 of extension and compensation film positioning tube 60 at end cap 20, the extension of stabilized compensation film 50 521.The outer rim of support portion 32 is used to abut the inner wall of tubular shell 10, and ring-shaped step 321 is used to protrude into the opening of compensation film 50 The endless groove formed between portion 51, the i.e. outer rim of ring-shaped step 321 and the inner wall of tubular shell 10 can make the opening of compensation film 50 Portion 51 is fitted closely with 10 inner wall of tubular shell, and is cooperated with compensation film positioning tube 60, and the opening portion of compensation film 50 is improved 51 with the leakproofness of 10 inner wall of tubular shell.

Specific embodiment of the present utility model described above does not constitute the restriction to scope of protection of the utility model. Any other various changes and modifications that any technical concept according to the present utility model is made should be included in practical In novel scope of protection of the claims.

Claims

1. a kind of damper, characterized by comprising:

Tubular shell, one end closing, another end opening；

End cap is set to the open end of the tubular shell；

Bearing is set to the inner cavity of the tubular shell；

Piston component comprising piston and bar, the piston are set to the inner cavity of the tubular shell and can be along the tubular shells The inner wall of body makees reciprocating sliding movement；Described bar one end sequentially passes through the end cap and bearing and connect with the piston；And

Compensation film is the cup-shaped sleeve structure for the deformable material being sheathed on the bar, the opening portion of cup-shaped sleeve and institute The inner wall for stating tubular shell is tightly connected, and the bottom of cup-shaped sleeve and the bar are tightly connected；

Wherein, the inner cavity of the tubular shell is successively divided into compensation to closed end from its open end by the compensation film and piston Room, storage compartment and pressure chamber, and at least one is provided on the piston component for being connected to the fluid of storage compartment and pressure chamber Path, the bearing are provided at least one for being connected to the fluid path of its two sides.

2. damper according to claim 1, it is characterised in that: be provided on the end cap at least one for be connected to benefit Repay the fluid path of room and exterior.

3. damper according to claim 2, it is characterised in that: further include being adapted with the internal diameter of the tubular shell Compensation film positioning tube, the opening portion of the compensation film, which has, thickeies outer rim, and compensation film positioning tube one end is connected to the end Lid, the other end are connected to the thickening outer rim of the compensation film opening portion, the opening portion of the compensation film are made to be connected to the bearing With the junction of tubular shell inner wall.

4. damper according to claim 3, it is characterised in that: the compensation film positioning tube abuts one end of the end cap For to the annular abutment radially extended, which is provided at least one for being connected to the fluid path of its two sides.

5. damper according to claim 4, it is characterised in that: the annular abutment of the compensation film positioning tube is equipped with extremely Deep gouge at few one, the interior through-hole being equipped with through the annular abutment two sides of the deep gouge.

6. damper according to claim 5, it is characterised in that: the end cap outer diameter is less than the internal diameter of institute's tubular shell, And the deep gouge part of the annular abutment setting of the compensation film positioning tube is covered by the end cap；The opening of the tubular shell End has radial turn-up portion, fixes for squeezing the compensation film positioning tube, compensation film, bearing.

7. damper according to claim 1, it is characterised in that: the bottom of the compensation film has along its axial extension Portion, the end cap have the annular gap for accommodating the extension, which makes the extension and the bar of the compensation film It fits closely.

8. damper according to claim 7, it is characterised in that: deepen along axial direction and make to hold in the annular gap of the end cap Lid is formed along its axial lug boss.

9. damper according to claim 7 or 8, it is characterised in that: the inner and outer wall difference of the extension is coaxial Be formed with interior sealing and outer seal portion in a ring, the interior sealing and outer seal portion respectively with the bar and the end cap Annular gap interference fit；The cross section of the interior sealing and outer seal portion is in the wedge that width is from top to bottom gradually increased Shape or width are by the diminishing shuttle shape in middle part to both ends, and the cross section for working as the interior sealing and outer seal portion is in shuttle shape When, width maximum is close to its lower end；Or, the cross section of the interior sealing and outer seal portion is triangular in shape, and its position It is 10~17 ° in the base angle of the end cap side, the base angle positioned at the bearing side is 27~35 °.

10. damper according to claim 1, it is characterised in that: the bearing includes the axle sleeve being sheathed on the bar Portion, and it is fixedly connected on the support portion of the tubular shell inner wall；The support portion have make the opening portion of the compensation film with The ring-shaped step that tubular shell inner wall fits closely.