CN208447864U - Hydraulic accumulation energy prosthetic foot - Google Patents

Abstract

The utility model discloses a kind of hydraulic accumulation energy prosthetic foots, its key points of the technical solution are that including upper sole, being detachably fixed the connector being connected to above sole and be detachably fixed the lower footplate being connected to below sole；The forefoot of upper sole is downwardly convex and edge stretches to form heel backward along lobe terminus, lower footplate sole is fixed in the medium position of upper sole by bolt, and the sole of lower footplate first raises upward to form foot tripe in the way stretched to followed by along, then protrusion finally extends rearwardly to form rear heel still further below, and the lower surface of last rear heel and the upper surface of forefoot are in horizontal alignment；Hydraulic damper is equipped between upper sole and lower footplate.The slow damping force generated between upper sole and lower footplate during prosthetic foot lands using hydraulic damper, so that the degree of flexibility of prosthetic foot is not the tension for relying solely on sole, the damping force that may also rely on hydraulic damper generation, increases the flexibility and stability of prosthetic foot.

Description

Hydraulic accumulation energy prosthetic foot

Technical field

The utility model relates to a kind of human body lower limbs field of prosthetic limbs, in particular to a kind of hydraulic accumulation energy prosthetic foot.

Background technique

Walking is the most basic function of human body lower limbs, and the amputation of any plane of lower limb all can carry out difficult step to the walking belt of people The bad aesthetic feeling that can also destroy people's entirety of row posture, therefore artificial limb is a kind of extremely important life for physical disabilities Articles.

Domestic prosthetic foot is largely common carbon fiber prosthetic foot at present, and ankle does not have hinge, and degree of flexibility takes completely It can feel that sole is inflexible certainly in the tension of sole, when patient's weight is lighter, the big patient of heavier-weight activity makes Used time can feel flexibly to be not sufficiently stable very much again so that patient's stability during gait is poor.

Existing to can refer to the Chinese utility model patent that Authorization Notice No. is CN201469462U, it discloses a kind of new Type energy storage artificial foot, structure design and use unique more J-shapeds elasticity rib structure, imitate foot bone bone and tendon forceps are worked as in walking In mechanics principle, make patient in the process of walking, multistage by more elastic ribs pushes and stretching, extension, has prosthetic foot very The impact force of strong absorption support phase, and the effect for preferably returning the energy of absorption when to shaking peroid transition.

But this energy storage artificial foot increases the tension of prosthetic foot using the elasticity that elastic rib itself has, the resistance provided Buddhist nun's power is smaller, and not very stable.

Utility model content

The purpose of the utility model is to provide a kind of hydraulic accumulation energy prosthetic foots, so that the degree of flexibility of prosthetic foot does not rely solely on The tension of sole may also rely on the damping force of hydraulic damper generation, increase the flexibility and stability of prosthetic foot.

The above-mentioned technical purpose of the utility model has the technical scheme that a kind of hydraulic accumulation energy is false Foot comprising upper sole is detachably fixed the connector being connected to above sole and is detachably fixed and is connected to sole The lower footplate of lower section；The forefoot of upper sole is downwardly convex and edge stretches to form heel backward along lobe terminus, and lower footplate sole is logical Cross the medium position that bolt is fixed in sole, and the sole of lower footplate first raises upward to form foot in the way stretched to followed by along Tripe, then protrusion finally extends rearwardly to form rear heel still further below, and the lower surface of last rear heel and the upper surface of forefoot are in Horizontal alignment；Hydraulic damper is equipped between upper sole and lower footplate.

By using above-mentioned technical proposal, using hydraulic damper in upper sole and lower footplate during prosthetic foot lands Between the slow damping force that generates may also rely on liquid so that the degree of flexibility of prosthetic foot is not the tension for relying solely on sole The damping force for pressing damper to generate, increases the flexibility and stability of prosthetic foot；The Combination Design of upper sole and lower footplate meets The arcuate structure of ergonomics, while simulating 3 force structures of human foot, i.e., at forefoot, upper sole and lower footplate At junction and rear heel, at firm banking for human body to the force of the prosthetic foot at, ensure that the reasonability of the prosthetic foot with it is laborsaving Effect.

Preferably, connector includes the firm banking being fixed on heel by bolt and passes through rotation axis and fix bottom Seat forms the upper interconnecting piece of rotation connection.

By using above-mentioned technical proposal, the ankle-joint of rotation axis analog human body, prosthetic foot is during landing, upper company Socket part can push or lift hydraulic damper, and the damping force that hydraulic damper generates causes rotation axis to generate and model of human ankle class As plantar flexion and dorsiflex increase the stability and flexibly of prosthetic foot so that the design of prosthetic foot is more in line with the structure of human body prosthetic foot Property.

Preferably, upper interconnecting piece includes that connector, lower section and rotation axis rotation of the top for connecting with prosthetic socket connect The friction portion and friction portion side connect is used to connect the connector of hydraulic damper, and firm banking upper surface is horizontal, friction portion The face opposite with firm banking is in semicircle shape, and the quality in friction portion is greater than the quality of connector.

By using above-mentioned technical proposal, firm banking upper surface level can remain mounted on upper interconnecting piece above it with Horizontal plane it is vertical, the friction portion face opposite with firm banking in semicircle shape facilitate friction portion around rotation axis rotate, friction portion The quality that quality is greater than connector will not generate excessive rotational angle when interconnecting piece is rotated around rotation axis.

Preferably, the semicircle shape face in friction subordinate portion and firm banking upper surface CONTACT WITH FRICTION.

By using above-mentioned technical proposal, and friction portion and firm banking upper surface CONTACT WITH FRICTION can also limit connector Rotational angle.

Preferably, hydraulic damper includes open at one end, and the hydraulic cylinder for holding hydraulic oil closed at one end, sealing are set In the piston rod in hydraulic cylinder and the hydraulic pressure bypass being connected to hydraulic cylinder, piston rod be located at one end outside hydraulic cylinder be equipped be used for The first prosthetic connector element being hinged with connector, hydraulic cylinder seal are equipped with the second artificial limb for being hinged with rear heel and connect Fitting；Hydraulic pressure bypass is equipped with the additional cavity that is connected to hydraulic pressure bypass, and set in additional cavity Packed rubber pneumatic bag and Hydraulic oil.

By using above-mentioned technical proposal, hydraulic cylinder is divided into the of two oil-containings inside hydraulic cylinder by underpart of the piston rod One chamber and second chamber positioned at upper end, hydraulic pressure bypass is connected between first chamber and second chamber, after piston rod stress It can be pressurized or be drawn in hydraulic cylinder, hydraulic oil acts on first chamber and second by hydraulic pressure bypass in this process Reciprocal flowing back and forth, generates damping force to connector between chamber, so that rotation axis generates the plantar flexion similar with model of human ankle With dorsiflex, increase the stability that patient walks.

Preferably, hydraulic pressure bypass includes the first unidirectional bypass and the second unidirectional bypass in parallel, and the first unidirectional bypass includes Along the first speed governing valve and the first check valve of the sequence setting of hydraulic oil flow direction, the setting direction of the first check valve allow hydraulic oil from The closed end of cylinder body flows to the open end of cylinder body, and additional cavity is set between the first speed governing valve and the first check valve；Second is single To the second speed governing valve and second one-way valve that bypass includes along the sequence setting of hydraulic oil flow direction, second one-way valve setting direction and the One check valve is contrary.

By using above-mentioned technical proposal, when the rear foot heelstrike when, connector pushes connector backward, so that connector rotates Moving axis rotates clockwise, so that connector pushes piston rod, piston rod moves downward and pushes the hydraulic oil in hydraulic cylinder Second chamber is flowed to from first chamber along the first unidirectional bypass, hydraulic oil generates the piston rod moved downward in this process Slow movable damping force is equivalent to the damper and implements reaction force to the power being loaded into prosthetic foot, rotation axis is caused to generate The plantar flexion similar with model of human ankle；When the rear foot heelstrike moves to forefoot and also lands, connector is pulled along connector, so that Connector lifts piston rod, and piston rod moves upwards and the hydraulic oil in hydraulic cylinder is pushed unidirectionally to bypass along second from second chamber First chamber is flowed back to, while the intracorporal hydraulic oil of additional chamber can also flow back to first chamber, hydraulic oil is to the piston rod moved upwards Slowly movable damping force is generated, the damper is equivalent to and reaction force is implemented to the power being loaded into prosthetic foot, cause rotation axis The dorsiflex similar with model of human ankle is generated, connector is stopped action when turning to initial position.

Preferably, the opening of hydraulic cylinder is equipped with guide sleeve, and guide sleeve is sheathed on the body of rod of piston rod, and guide sleeve It is in sealing contact with the inner wall of hydraulic cylinder, the outer surface of the body of rod of piston rod.

By using above-mentioned technical proposal, when guide sleeve can keep piston rod to move in hydraulic cylinder and hydraulic cylinder axis The depth of parallelism, while the device can be increased in the leakproofness of hydraulic cylinder opening.

Preferably, lower footplate is v-shaped structure, and the sole of lower footplate is bolted below the heel of sole, under Then the sole of sole extends rearwardly to form rear heel along lobe terminus to towards the direction of forefoot protrusion.

By using above-mentioned technical proposal, the point of application of the human body to prosthetic foot is moved to upper sole and lower footplate by this structure Junction, such forefoot and rear heel can adjust pressure distribution automatically to keep the vertical of connector, further increase Its stability.

Preferably, upper sole and lower footplate are all made of carbon fiber board.

By using above-mentioned technical proposal, using the good feature of the high resiliency of carbon fiber board, high intensity and flexibility, So that the prosthetic foot has good comfort and stability, while it ensure that the structural strength of prosthetic foot.

In conclusion the utility model has the following beneficial effects:

1. the hydraulic damper provides a stable hydraulic damping for prosthetic foot, so that the flexibility of the prosthetic foot not only takes Certainly in the tension of sole, the damping force of hydraulic damper generation may also rely on；

2. hydraulic damper generates slowly movable resistance during prosthetic foot lands from heel to forward roll Buddhist nun, so that rotation axis generates the plantar flexion or dorsiflex similar with model of human ankle；

3. rotation axis can produce biggish rotational angle, so that prosthetic foot can produce the function of similar model of human ankle, So that the walking of user is more stable, gait process is more comfortable.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment 1；

Fig. 2 is the schematic diagram of internal structure of hydraulic damper；

Fig. 3 be in embodiment 1 rear foot heelstrike when rough schematic；

Fig. 4 be in embodiment 1 rear foot heelstrike after rough schematic of forefoot when also landing；

Fig. 5 is the overall structure diagram of embodiment 2.

In figure, 1, upper sole；11, forefoot；12, heel；2, lower footplate；21, sole；22, foot tripe；23, rear heel；3, Connector；31, firm banking；311, fixed plate；312, accommodation groove；32, rotation axis；33, upper interconnecting piece；331, connector；332, Friction portion；333, connector；4, piston rod；41, the body of rod；42, piston；5, hydraulic cylinder；51, cylinder cap；52, guide sleeve；53, first Chamber；54, second chamber；6, hydraulic pressure bypass；61, the first unidirectional bypass；611, the first check valve；612, the first speed governing valve；62, Second unidirectional bypass；621, second one-way valve；622, the second speed governing valve；63, additional cavity；631, rubber pneumatic bag；7, first is false Limb connector；8, the second prosthetic connector element.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom Face " and " top surface " refer to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

After being with the position for installing hydraulic damper below, then before being with rear opposite position.

Embodiment 1

A kind of hydraulic accumulation energy prosthetic foot, as shown in Figure 1, including upper sole 1, being detachably fixed and be connected to the top of sole 1 Connector 3 is detachably fixed the lower footplate 2 for being connected to 1 lower section of sole and is connected between connector 3 and lower footplate 2 Hydraulic damper.Upper sole 1 and lower footplate 2 can imitate the shape of the foot of human body, and connector 3 can pass through 32 mould of rotation axis in it Quasi- ankle-joint, hydraulic damper enable to this prosthetic foot to have a hydraulic resistance in standing or front-rear direction ankle moving Buddhist nun may also rely on the damping force of hydraulic damper generation so that the flexibility of the prosthetic foot depends not only on the tension of sole； It is similar with model of human ankle that this hydraulic damping simultaneously causes the patient for dressing this prosthetic foot rotation axis 32 when on foot to generate Plantar flexion and dorsiflex increase the stability that patient walks.

Upper sole 1 includes forefoot 11 and heel 12, and forefoot 11 is pico- downwardly convex and edge is stretched backward along lobe terminus Form heel 12；Lower footplate 2 includes sole 21, foot tripe 22 and rear heel 23, and sole 21 is fixed in upper sole 1 by bolt Medium position, and sole 21 first raises upward to form foot tripe 22 along the way stretched to rear heel 23, it is then pico- downwardly convex again It rises and finally extends rearwardly to form rear heel 23, the lower surface of last rear heel 23 and the upper surface of forefoot 11 are in horizontal alignment.

The Combination Design of upper sole 1 and lower footplate 2 meets the arcuate structure of ergonomics, while simulating human foot 3 force structures ensure that the prosthetic foot that is, at forefoot 11, at the junction of upper sole 1 and lower footplate 2 and rear heel 23 Reasonability and labor-saving effect.

And upper sole 1 and lower footplate 2 are all made of carbon fiber board, and the high resiliency of carbon fiber board, high intensity are utilized And the feature that flexibility is good, so that the prosthetic foot has good comfort and stability, while it ensure that the structure of prosthetic foot is strong Degree.

Connector 3 includes the firm banking 31 being fixed on heel 12 by bolt and passes through rotation axis 32 and fix bottom Seat 31 forms the upper interconnecting piece 33 of rotation connection, and 31 upper surface of firm banking is horizontal and its left and right sides upwardly extends to form two pieces Fixed plate 311, thus forms the accommodation groove 312 for installing interconnecting piece 33 above firm banking 31, and rotation axis 32 In in accommodation groove 312 and being vertically fixed between two fixed plates 311.

Upper interconnecting piece 33 include that top is used for the connector 331 that connect with prosthetic socket, lower section is located in accommodation groove 312 and With rotation axis 32 be rotatablely connected friction portion 332 and friction portion 332 behind for connect hydraulic damper and with friction portion 332 connectors 333 being wholely set, friction portion 332 are in semicircle shape close to the face of 312 bottom wall of accommodation groove, and friction portion 332 is facilitated to exist Rotation in accommodation groove 312；332 upper surface of friction portion is horizontal, and connector 331 is in four prism type, is integrally formed in friction portion 332 Surface.

In conjunction with Fig. 2, hydraulic damper includes the hydraulic cylinder 5 for holding hydraulic oil open at one end, closed at one end, is set to Piston rod 4 in hydraulic cylinder 5 and the hydraulic pressure bypass 6 being connected to hydraulic cylinder 5.One end that piston rod 4 is located at outside hydraulic cylinder 5 is equipped with First prosthetic connector element 7, the closed end of hydraulic cylinder 5 are equipped with the second prosthetic connector element 8, and hydraulic damper is connected by the first artificial limb Part 7 and the second prosthetic connector element 8 are hinged with connector 333 and rear heel 23 respectively.

Hydraulic cylinder 5 is divided into two chambers containing hydraulic oil inside hydraulic cylinder 5 by 4 lower part of piston rod, including under being located at The first chamber 53 at end and second chamber 54 positioned at upper end, hydraulic pressure bypass 6 be connected to first chamber 53 and second chamber 54 it Between, and hydraulic pressure bypass 6 is equipped with the additional cavity 63 being connected to hydraulic pressure bypass 6, sets Packed rubber in additional cavity 63 Air bag 631 and hydraulic oil.

Hydraulic pressure bypass 6 includes the first unidirectional bypass 61 and the second unidirectional bypass 62 in parallel.First, which unidirectionally bypasses 61, includes Along the first speed governing valve 612 and the first check valve 611 of hydraulic oil flow direction sequence setting, the setting direction of the first check valve 611 permits Perhaps hydraulic oil flows to the open end of hydraulic cylinder 5 from the closed end of hydraulic cylinder 5, and additional cavity 63 is set to the first speed governing valve 612 Between the first check valve 611.

In conjunction with Fig. 2 and Fig. 3, when rear heel 23 lands, connector 331 pushes connector 333 backward so that connector 333 around Rotation axis 32 rotates clockwise, so that connector 333 pushes piston rod 4, piston rod 4 is moved downward, and squeezes first chamber Hydraulic oil in 53, hydraulic oil first pass around the first speed governing valve 612 in the first unidirectional bypass 61, then flow to additional cavity 63, then second chamber 54 is flowed to by way of the first check valve 611.

Due to the effect of the first speed governing valve 612, so that the hydraulic oil in first chamber 53 can be to the piston rod 4 moved downward Slowly movable damping force is generated, the damper is equivalent to and reaction force is implemented to the power being loaded into prosthetic foot, cause rotation axis 32 generate the plantar flexion similar with model of human ankle.

The angle that connector 333 rotates in order to prevent is excessive, and the quality in friction portion 332 is greater than the quality of connector 331, simultaneously The periphery of friction portion 332 during rotation below and 31 upper surface of firm banking rub, and can prevent connector 333 from rotating When rotational angle it is too big, the angle control that connector 333 is rotated is within limits.

Since piston rod 4 is in T font, 42 upper end one of piston 42 and piston being slidably connected including lower end and hydraulic cylinder 5 The body of rod 41 of body setting, first chamber 53 is the space of 42 lower end of piston, therefore the cross-sectional area of second chamber 54 is small, i.e., first The volume of chamber 53 is greater than the volume of second chamber 54, therefore flows out liquid of the hydraulic oil than flowing into second chamber 54 of first chamber 53 Pressure oil is more, and extra hydraulic oil can be stored in additional cavity 63 at this time.

Rubber pneumatic bag 631 in additional cavity 63 can be squeezed by the hydraulic oil in inflow additional cavity 63, rubber pneumatic bag 631 A space flexible is provided to hydraulic pressure bypass 6, the space of hydraulic pressure bypass 6 is become larger, can also be become smaller, this flexibility Hydraulic pressure bypass 6 can make it generate damping it is more stable, increase the stability of prosthetic foot in use.

In conjunction with Fig. 2 and Fig. 4, the second unidirectional bypass 62 includes the second one-way valve 621 along hydraulic oil flow direction sequence setting And second speed governing valve 622,621 setting direction of second one-way valve are contrary with the first check valve 611.

Rear heel 23 lands when moving to forefoot 11 and also landing, and connector 331 is pulled along connector 333, so that connection First 333 lifting piston rod 4 squeezes the hydraulic oil in second chamber 54 so that piston rod 4 moves upwards, and hydraulic oil is the The second speed governing valve 622 is first passed around in two unidirectional bypasses 62, flows to first chamber 53 after approach second one-way valve 621；Due to stream The hydraulic oil of second chamber 54 can not fill up the space of first chamber 53 out, cause first chamber 53 with the presence of vacuum, this when The hydraulic oil waited in additional cavity 63 will also flow into first chamber 53.

Due to the effect of the second speed governing valve 622, so that the hydraulic oil in second chamber 54 can be to the piston rod 4 moved upwards Slowly movable damping force is generated, the damper is equivalent to and reaction force is implemented to the power being loaded into prosthetic foot, cause rotation axis 32 generate the dorsiflex similar with model of human ankle, and connector 333 is stopped action when turning to initial position.

Fig. 2 is reviewed, the open end which is located at hydraulic cylinder 5 is equipped with cylinder cap 51, and 5 open end of hydraulic cylinder is close Envelope, 4 upper end of piston rod is located at outside cylinder cap 51；And it is equipped with guide sleeve 52 in the opening of hydraulic cylinder 5, guide sleeve 52 is sheathed on bar On body 41, and guide sleeve 52 and the inner wall of hydraulic cylinder 5, the outer surface of the body of rod 41 are in sealing contact.

Embodiment 2

As shown in figure 5, with being in embodiment 2 that lower footplate 2 is v-shaped structure and does not have foot tripe in place of the difference of embodiment 1 22 parts, the sole 21 of lower footplate 2 are bolted on the lower section of heel 12, and sole 21 is to towards the direction of forefoot 11 protrusion Then rear heel 23 is extended rearwardly to form along lobe terminus, the upper surface of rear heel 23 is located at same with the upper surface of forefoot 11 Horizontal plane；The point of application of the human body to prosthetic foot is moved to the junction of upper sole 1 and lower footplate 2, such prosthetic foot stress by this structure When forefoot 11 and rear heel 23 automatically the distribution of adjustment pressure it is steady to further increase it to keep the vertical of connector 3 It is qualitative.

For the patient for installing the prosthetic foot when rear heel 23 lands, connector 331 pushes connector 333 backward, so that connector 333 rotate clockwise around rotation axis 32, so that connector 333 pushes piston rod 4, piston rod 4 moves downward and pushes liquid Hydraulic oil in cylinder pressure 5 flows to second chamber 54 from first chamber 53 along the first unidirectional bypass 61, in this process hydraulic oil Slow movable damping force is generated to the piston rod 4 moved downward, the damper is equivalent to and the power being loaded into prosthetic foot is implemented Reaction force causes rotation axis 32 to generate the plantar flexion similar with model of human ankle；Rear heel 23, which lands, moves to forefoot 11 When landing, connector 331 is pulled along connector 333, so that connector 333 lifts piston rod 4, piston rod 4 is moved upwards and pushed away Hydraulic oil in hydrodynamic cylinder pressure 5 flows back to first chamber 53, while additional cavity 63 from second chamber 54 along the second unidirectional bypass 62 Interior hydraulic oil can also flow back to first chamber 53, and hydraulic oil generates slow movable damping force, phase to the piston rod 4 moved upwards When implementing reaction force to the power being loaded into prosthetic foot in the damper, rotation axis 32 is caused to generate similar with model of human ankle Dorsiflex, connector 333 are stopped action when turning to initial position.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (9)

1. a kind of hydraulic accumulation energy prosthetic foot, it is characterised in that: including upper sole (1), be detachably fixed and be connected to above upper sole (1) Connector (3) and be detachably fixed the lower footplate (2) being connected to below sole (1)；The forefoot (11) of upper sole (1) Downwardly convex and to be formed heel (12) along stretching backward along lobe terminus, the sole (21) of lower footplate (2) is fixed in by bolt The medium position of sole (1), and sole (21) first raises upward to form foot tripe (22) to rear heel (23) along the way stretched, so Protrusion finally extends rearwardly to form rear heel (23) still further below afterwards, and the lower surface of last rear heel (23) is upper with forefoot (11) Surface is in horizontal alignment；And hydraulic damper is equipped between upper sole (1) and lower footplate (2).

2. a kind of hydraulic accumulation energy prosthetic foot according to claim 1, it is characterised in that: connector (3) includes solid by bolt It connects the firm banking (31) on the heel (12) of upper sole (1) and is formed by rotation axis (32) and firm banking (31) and turned The upper interconnecting piece (33) of dynamic connection.

3. a kind of hydraulic accumulation energy prosthetic foot according to claim 2, it is characterised in that: upper interconnecting piece (33) are used for including top The friction portion (332) and friction portion of the connector (331), lower section and rotation axis (32) rotation connection that are connect with prosthetic socket (332) side is used to connect the connector (333) of hydraulic damper；Firm banking (31) upper surface is horizontal, friction portion (332) with The opposite face of firm banking (31) is in semicircle shape, and the quality of friction portion (332) is greater than the quality of connector (331).

4. a kind of hydraulic accumulation energy prosthetic foot according to claim 3, it is characterised in that: the semicircle shape of friction portion (332) lower part Face and firm banking (31) upper surface CONTACT WITH FRICTION.

5. a kind of hydraulic accumulation energy prosthetic foot according to claim 1 to 4, it is characterised in that: hydraulic damper includes hydraulic Damper includes the hydraulic cylinder (5) for holding hydraulic oil open at one end, closed at one end, sealing in hydraulic cylinder (5) Piston rod (4) and the hydraulic pressure bypass (6) being connected to hydraulic cylinder (5), piston rod (4) are located at the one end of hydraulic cylinder (5) outside and are equipped with The first prosthetic connector element (7) for being hinged with connector (333), the closed end of hydraulic cylinder (5), which is equipped with, to be used for and rear heel (23) the second prosthetic connector element (8) being hinged；Hydraulic pressure bypass (6) is equipped with additional cavity (63), sets in additional cavity (63) Packed rubber pneumatic bag (631) and hydraulic oil.

6. a kind of hydraulic accumulation energy prosthetic foot according to claim 5, it is characterised in that: hydraulic pressure bypass (6) includes in parallel the One unidirectional bypass (61) and the second unidirectional bypass (62), the first unidirectional bypass (61) include the be arranged along hydraulic oil flow direction sequence The setting direction of one speed governing valve (612) and the first check valve (611), the first check valve (611) allows hydraulic oil from hydraulic cylinder (5) Closed end flow to the open ends of hydraulic cylinder (5), additional cavity (63) is set to the first speed governing valve (612) and the first check valve (611) between；Second unidirectional bypass (62) includes the second one-way valve (621) and the second speed regulation along hydraulic oil flow direction sequence setting Valve (622), second one-way valve (621) setting direction are contrary with the first check valve (611).

7. a kind of hydraulic accumulation energy prosthetic foot according to claim 6, it is characterised in that: the opening of hydraulic cylinder (5) is equipped with and leads To set (52), guide sleeve (52) is sheathed on the body of rod (41) of piston rod (4), and the inner wall of guide sleeve (52) and hydraulic cylinder (5), The outer surface of the body of rod (41) of piston rod (4) is in sealing contact.

8. a kind of hydraulic accumulation energy prosthetic foot according to claim 1, it is characterised in that: lower footplate (2) is v-shaped structure, is got a foothold The sole (21) of plate (2) is bolted below heel (12), and the sole (21) of lower footplate (2) is to towards forefoot (11) Direction protrusion then along lobe terminus extend rearwardly to form rear heel (23).

9. a kind of hydraulic accumulation energy prosthetic foot according to claim 1 or 8, it is characterised in that: upper sole (1) and lower footplate (2) All it is made of carbon fiber board.