CN112972216A - Integrated parking system for unpowered walking aid and unpowered walking aid - Google Patents
Integrated parking system for unpowered walking aid and unpowered walking aid Download PDFInfo
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- CN112972216A CN112972216A CN202110388612.2A CN202110388612A CN112972216A CN 112972216 A CN112972216 A CN 112972216A CN 202110388612 A CN202110388612 A CN 202110388612A CN 112972216 A CN112972216 A CN 112972216A
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- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/04—Wheeled walking aids for patients or disabled persons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/04—Wheeled walking aids for patients or disabled persons
- A61H2003/046—Wheeled walking aids for patients or disabled persons with braking means
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Abstract
The invention provides an integrated parking system for an unpowered walker and the unpowered walker. The integrated parking system comprises a brake handle, a front-end brake cable, a rear-end brake cable and a brake. The brake handle is connected with the front end of the front-end brake cable, and the rear end of the rear-end brake cable is connected with the brake. The integrated parking system further comprises a labor-saving integrated mechanism, the labor-saving integrated mechanism comprises a shell, a movable pulley and a traction rod, the movable pulley and the traction rod are arranged in the shell, the rear end of a front-end brake cable bypasses the movable pulley and is fixed inside the shell, the traction rod is located below the movable pulley, one end of the traction rod is hinged to the shell, the traction rod is connected with a pulley seat of the movable pulley through a first connecting piece at a first connecting portion, the traction rod is connected to the front end of the rear-end brake cable at a second connecting portion, and the second connecting portion is closer to one end of the traction rod than the first connecting portion. According to the scheme of the invention, the grip force which is required to be applied to the brake handle by a user when the unpowered walker is parked can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of walking aids, in particular to an integrated parking system for an unpowered walking aid and the unpowered walking aid.
Background
The old people have the phenomena of the degeneration of functions of a musculoskeletal system and a nervous system caused by the decline of physiological functions, unstable gravity center, reduced limb activity and coordination capacity and even fall injury in the process of standing and walking. According to data of 'Chinese injury prevention report' in 2019, the total cause of death of a fall is predicted to rise from the 21 st position to the 17 th position by 2030 years. On the other hand, the walking exercise can promote the operation of various physiological systems of the human body, and has positive significance for delaying the decline of the physical functions of the old.
The walking aid is a supporting appliance for assisting a user to walk, so that the walking stability is enhanced and the walking independence is promoted when the walking aid is used by a user with inconvenient actions. The walking aids in the current market can be divided into two categories of powered walking aids and unpowered walking aids according to the situation that the walking aids are unpowered. The powered walking aid has stronger functionality and higher intelligent degree, but is limited by various factors such as family conditions of users, the requirement of the users on cruising ability, the difficulty of maintenance after failure and the like, and is more difficult to popularize in general population. The unpowered walking aid has the advantages of low price, light weight, simple and reliable structure, simple and convenient maintenance and the like, and can better meet the market demand. It should be noted that the unpowered walking aid has no power assisting function, needs to be pushed to advance by manpower, and needs to be held by the grip of a user to park when braking. However, most users have the body function decline, the upper limb dominance capacity is limited, the grip strength is far smaller than that of normal people, and when the users face the conditions of insufficient grip strength, urgent road conditions or steep downhill slopes, the users are very easy to suffer from accidental injuries caused by untimely parking.
Accordingly, there is a need for an integrated parking system for an unpowered walker and an unpowered walker that at least partially addresses the problems of the prior art, which is significant for the elderly with reduced function and users with insufficient strength of the upper extremities.
Disclosure of Invention
In order to solve the technical problems, the invention provides an integrated parking system for an unpowered walker and the unpowered walker, and aims to effectively reduce the holding force which is required to be applied to a brake handle by a user when the unpowered walker is parked, and reduce the probability of falling and vehicle rollover caused by untimely parking or insufficient parking force.
In a first aspect of the invention, an integrated park system for an unpowered walker is provided. The integrated parking system comprises a brake handle, a front end brake cable, a rear end brake cable and a brake, wherein, the brake handle is connected with the front end of the front end brake cable, the rear end of the rear end brake cable is connected with the brake, wherein the integrated parking system further comprises a labor-saving integrated mechanism, the labor-saving integrated mechanism comprises a shell, and a movable pulley and a traction rod which are arranged in the shell, the rear end of the front end brake cable is wound around the movable pulley and fixed in the shell, the traction rod is positioned below the movable pulley, one end of the traction rod is hinged on the shell, the traction rod is connected with the pulley seat of the movable pulley at a first connecting part through a first connecting piece, the traction rod is connected to the front end of the rear end brake cable at a second connecting part, wherein the second coupling portion is closer to the one end of the drawbar than the first coupling portion.
Preferably, the labor-saving integrated mechanism further comprises a fixed pulley arranged in the housing, and the rear end of the front end brake cable passes around the movable pulley and the fixed pulley and is fixed on a pulley seat of the fixed pulley or a pulley seat of the movable pulley.
Preferably, the drawbar includes a first rod portion and a second rod portion separately disposed from the first rod portion, a first channel is disposed in the first rod portion, a second channel is disposed in the second rod portion, the drawbar further includes a second connecting member disposed in the first channel and the second channel, the second connecting member is capable of moving along the first channel and the second channel and is capable of being fixed at a plurality of positions in the first channel and the second channel.
Preferably, the traction rod includes a first rod part bent toward the movable pulley to form a first recess and a second rod part bent toward a direction opposite to the bending direction of the first rod part to form a second recess; the rear end of the first connecting piece is provided with a first limiting terminal, the front end of the rear end brake cable is provided with a second limiting terminal, the first connecting piece penetrates through the first rod part at the first connecting part and the first limiting terminal is arranged in the first concave part, and the rear end brake cable penetrates through the second rod part at the second connecting part and the second limiting terminal is arranged in the second concave part.
Preferably, the housing is provided at an inner portion thereof with a first groove along which the movable pulley is movable.
Preferably, a first spring is provided at least one end within the first groove.
Preferably, the front brake cable comprises a first cable section and a second cable section, the integrated parking system further comprises a stroke accumulation mechanism connected between the first cable section and the second cable section, the stroke accumulation mechanism comprises a support seat and a transmission rod, the transmission rod is rotatably connected with the support seat through a first one-way bearing, one end of the transmission rod is connected with a first gear, a first rack is engaged on the first gear, and the first gear is provided with a non-toothed part; the other end of the transmission rod is connected with a second gear through a second one-way bearing, a second rack is meshed on the second gear, and the second one-way bearing is configured in such a way that when the second rack moves upwards, the second gear and the transmission rod do not rotate relatively; the first wire section is connected with the second rack and the second wire section is connected with the first rack; the rotatable direction of the first one-way bearing is opposite to the rotatable direction of the second one-way bearing.
Preferably, the support seat is provided with a second groove and a third groove, and the first rack and the second rack are respectively arranged in the second groove and the third groove and can respectively move in the second groove and the third groove.
Preferably, the travel summation mechanism further comprises a second spring disposed within the third groove and above the second rack.
In a second aspect of the invention, an unpowered walker is provided. The unpowered walker comprises: a wheel carrier; a wheel attached to a bottom of the wheel bracket; and an integrated park system for an unpowered walker as described above. Wherein, integrated form parking system the brake can move between parking position and driving position, works as front end brake cable with when rear end brake cable tightens up, the brake moves to the parking position, the brake with the wheel contact, works as front end brake cable with when rear end brake cable relaxes, the brake moves to during the driving position, the brake with the wheel is spaced apart.
Preferably, the housing of the integrated effort-saving mechanism is mounted on a wheel support of the unpowered walker.
According to the scheme of the invention, through the arrangement of the labor-saving integrated mechanism, the gripping force which is required to be applied to the brake handle by a user when the unpowered walking aid is parked can be effectively reduced, so that the unpowered walking aid is easier to park, the parking braking time is shortened, the probability of falling and vehicle rollover caused by untimely parking or insufficient parking force is reduced, the safety of the user in trip is protected, the risk of damage to the upper limbs of the user due to long-time use is avoided, and the labor-saving integrated mechanism has great practical significance and strong practical value; in addition, the stroke accumulation mechanism can accumulate the stroke of the front brake cable by holding the brake handle for multiple times, so that the stroke increase caused by the arrangement of the labor-saving integration mechanism is compensated, and the sensitivity of the brake handle does not need to be adjusted.
Drawings
Non-limiting and non-exhaustive embodiments of the present invention are described by way of example with reference to the following drawings, in which:
FIG. 1 is a schematic view of an integrated park system for an unpowered walker according to an embodiment of the present invention with brakes not shown;
FIG. 2 is a schematic view of the mounting of the labor saving integrated mechanism of the integrated park system for an unpowered walker according to an embodiment of the invention, wherein the housing of the labor saving integrated mechanism is mounted on the wheel carriage of the unpowered walker;
FIG. 3 is a schematic view of a park state of a labor-saving integrated mechanism for an integrated park system for an unpowered walker according to an embodiment of the invention, wherein a housing of the labor-saving integrated mechanism is not shown;
FIG. 4 is a schematic of the drive state (initial state) of the integrated effort-saving mechanism for an integrated parking system for an unpowered walker according to an embodiment of the present invention, wherein the housing of the integrated effort-saving mechanism is not shown;
FIG. 5 is a schematic structural view of a separately disposed drawbar for a labor saving integrated mechanism of an integrated parking system for an unpowered walker according to an embodiment of the present invention; and
FIG. 6 is a schematic structural diagram of a travel summation mechanism for an integrated park system for an unpowered walker according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In a first aspect of the invention, an integrated park system for an unpowered walker is provided. FIG. 1 is a schematic view of an integrated park system 100 for an unpowered walker according to an embodiment of the present invention, with brakes 21 (see FIG. 2) not shown. FIG. 2 is a schematic illustration of the mounting of the labor saving integrated mechanism of the integrated park system 100 for an unpowered walker according to an embodiment of the invention, wherein the housing 3 of the labor saving integrated mechanism is mounted on the wheel support 23 of the unpowered walker. FIG. 3 is a schematic illustration of the park state of the labor-saving integrated mechanism of the integrated park system 100 for an unpowered walker according to an embodiment of the invention, wherein the housing 3 of the labor-saving integrated mechanism is not shown. FIG. 4 is a schematic of the drive state (initial state) of the labor saving integrated mechanism of the integrated park system 100 for an unpowered walker according to an embodiment of the invention, wherein the housing 3 of the labor saving integrated mechanism is not shown. FIG. 5 is a schematic diagram of the construction of the separately disposed traction bar 9 of the integrated effort-saving mechanism of the integrated park system 100 for an unpowered walker according to an embodiment of the present invention. FIG. 6 is a schematic diagram of the structure of the travel summation mechanism of the integrated park system 100 for an unpowered walker according to an embodiment of the invention.
An integrated park system 100 for an unpowered walker according to an embodiment of the present invention will be described in detail with reference to fig. 1-6.
As shown in FIGS. 1 and 2, the integrated parking system 100 for an unpowered walker includes a brake handle 1, a front brake cable 2, a rear brake cable 13 and a brake 21. The front brake cable 2 and the rear brake cable 13 may be generally steel wires, but may be made of any other suitable material. The brake handle 1 is connected to the front end of the front brake cable 2, and the rear end of the rear brake cable 13 is connected to the brake 21. The integrated parking system 100 further includes a labor-saving integration mechanism connected to the rear end of the front end brake cable 2 to be connected with the brake handle 1 through the front end brake cable 2, and also connected to the front end of the rear end brake cable 13 to be connected with the brake 21 through the rear end brake cable 13. Specifically, the labor-saving integrated mechanism includes a housing 3, and a movable pulley 7 and a traction rod 9 provided in the housing 3, and the rear end of the front end brake cable 2 is passed around the movable pulley 7 and fixed inside the housing 3. The rear end of the front end brake cable 2 may be fixed to the inner wall of the housing 3 or may be fixed to another member inside the housing 3. The draw bar 9 is positioned below the movable pulley 7. The drawbar 9 is hinged at one end to the housing 3, preferably at a hinge point 12 such as by a pin or the like, to the housing 3. Furthermore, the traction rod 9 is connected at its first connection with the pulley seat of the movable pulley 7 by a first connection 22 (e.g. a steel wire), and the traction rod 9 is connected at its second connection to the front end of the rear brake cable 13, wherein the second connection is closer to the one end of the traction rod 9 (i.e. the hinge point 12) than the first connection. In the present invention, the "front end" refers to an end closer to the handle 1 than the "rear end", the "rear end" refers to an end farther from the handle 1 than the "front end", accordingly, the "front end brake cable" refers to a brake cable closer to the handle 1 than the "rear end brake cable", and the "rear end brake cable" refers to a brake cable farther from the handle 1 than the "front end brake cable".
Preferably, the labor-saving integrated mechanism further includes a fixed pulley 5 provided in the housing 3. The fixed pulley 5 has no labor-saving effect but can change the direction of force, and the fixed pulley 5 and the movable pulley 7 form a pulley block which has both the labor-saving effect and the direction of force. The rear end of the front end brake cable 2 is wound around the movable pulley 7 and the fixed pulley 5 and fixed to a pulley seat of the fixed pulley 5 or a pulley seat of the movable pulley 7. When the labor-saving integrated mechanism includes only one movable pulley 7 and does not include the fixed pulley 5, the rear end of the front end brake cable 2 can be passed around the movable pulley 7 and fixed on the inner wall of the housing 3. Preferably, the interior of the housing 3 of the labor-saving integrated mechanism can be provided with a first groove 8, and the movable pulley 7 can move along the first groove 8, so that the moving range of the movable pulley 7 can be limited, and the stability of the whole labor-saving integrated mechanism can be ensured. Preferably, the first groove 8 is provided between the fixed sheave 5 and the traction rod 9, and extends in a longitudinal direction (vertical direction in this embodiment) directed from the fixed sheave 5 to the traction rod 9 or from the traction rod 9 to the fixed sheave 5, so that the movable sheave 7 can move up and down along the first groove 8. However, in other embodiments of the invention, which are not shown, the first groove 8 may also extend obliquely with respect to the longitudinal direction. Preferably, a first spring 6 is provided at least one end within the first groove 8. In this embodiment, the first spring 6 is arranged at the upper end part in the first groove 8, the movable pulley 7 moves upwards along the first groove 8 in the parking process, after the movable pulley 7 is in contact with the first spring 6, the first spring 6 can contract due to the pressure action of the movable pulley 7, and in the moving process of the movable pulley 7, the resistance generated by the first spring 6 is small, so that the limiting effect is achieved, and the movable pulley 7 is prevented from being damaged due to the fact that the upper part of the movable pulley 7 collides with the upper end part in the first groove 8.
In the embodiment, the labor-saving integrated mechanism comprises a fixed pulley 5 and a movable pulley 7, the rear end of the front end brake cable 2 sequentially passes through the movable pulley 7 and the fixed pulley 5 and is fixed on the pulley seat of the movable pulley 7, the number of the segments of the brake cable connected with the movable pulley 7 is 3, in the theoretical state, the holding force required to be exerted on the brake handle 1 by a user during the parking of the unpowered walker is reduced to about 1/3 of the original holding force, and when the friction force and the resistance force of the first spring 6 are considered, the holding force required to be exerted on the brake handle 1 by the user during the parking of the unpowered walker is actually reduced to be slightly more than 1/3 of the original holding force. However, in other embodiments of the invention not shown, the integrated effort-saving mechanism may also comprise a plurality of movable pulleys 7 and may also comprise a plurality of fixed pulleys 5. When the integrated labor saving mechanism comprises a plurality of movable pulleys 7, the holding force required by the user to exert on the brake handle 1 when the unpowered walker is parked can be further reduced.
Preferably, as shown in fig. 1, the traction rod 9 comprises a first rod portion 91 and a second rod portion 92. The first lever portion 91 is bent toward the movable sheave 7 to form a first concave portion; the second lever portion 92 is bent in a direction opposite to the bending direction of the first lever portion 91 to form a second recess. Specifically, in the present embodiment, the first lever portion 91 is bent upward, and the second lever portion 92 is bent downward. The rear end of the first connector 22 (i.e., the end connected to the drawbar 9) is provided with a first limit terminal 10, and the front end of the rear end brake cable 13 is provided with a second limit terminal 11, wherein the first connector 22 passes through the first lever part 91 at the first connection part and the first limit terminal 10 is disposed in the first recess, and the rear end brake cable 13 passes through the second lever part 92 at the second connection part and the second limit terminal 11 is disposed in the second recess. In this way, it is achieved that the traction rod 9 is connected with the pulley seat of the movable pulley 7 at a first connection by means of a first link 22 and that the traction rod 9 is connected to the front end of the rear brake cable 13 at a second connection. Of course, the first coupling member 22 and the rear brake cable 13 may also be directly connected to the first coupling portion and the second coupling portion of the drawbar 9.
The drawbar 9 acts as a labor-saving lever, the effort-saving effect of which depends on the ratio of the lateral spacing of the first and second connections of the drawbar 9 to the articulation point 12, i.e. the ratio of the power arm to the resistance arm. In the present embodiment, the labor saving effect of the drawbar 9 may also be determined by the ratio of the lateral spacing between the first limit terminal 10 and the second limit terminal 11 and the hinge point 12. For example, the above ratio may be set to 3: 1, the traction force on the first connecting member 22 can be reduced to 1/3 of the pulling force on the front end of the rear brake cable 13, and in combination with the labor-saving effect of the pulley block in the embodiment, the gripping force required by the user to exert on the brake handle 1 when the unpowered walker is parked can be further reduced to 1/9 of the original required gripping force, and is slightly larger than 1/9 of the original required gripping force when slight friction force and the like are considered.
Preferably, as shown in fig. 5, the first lever part 91 and the second lever part 92 of the traction lever 9 may be provided separately so that the first lever part 91 and the second lever part 92 can be spaced apart from each other by different distances. A first passage (not shown) is provided in the first rod portion 91 and a second passage (not shown) is provided in the second rod portion 92. The drawbar 9 further comprises a second coupling member 93 disposed in the first and second passages. The second connecting member 93 is a rigid member. The second connector 93 is movable along the first and second channels and is fixable at a plurality of positions within the first and second channels. In the embodiment shown in fig. 5, the second connector 93 has a rectangular sheet-like shape, however, in other embodiments not shown in the present invention, the second connector 93 may have any other suitable shape, and accordingly the first and second channels may have any other suitable shape.
In actual use, the proportion of effort that is saved by the tow bar 9 can be adjusted to suit the needs of different users having different grips by changing the length that the second link 93 is pulled out of the first and second channels by moving the second link 93 in the first and second channels and fixing the second link 93 at different positions. Specifically, as shown in fig. 5, the second connecting member 93 can be pulled out from the first and second passages to a desired position and fixed at the desired position by the fixing member 94, so that the lateral distance between the second limit terminal 11 and the hinge point 12 (i.e. the resistance arm) is constant, while the lateral distance between the first limit terminal 10 and the hinge point 12 (i.e. the power arm) is increased, therefore, the ratio of the power arm to the resistance arm is increased (e.g. 4:1 or 5:1, etc.), the labor saving ratio of the tow bar 9 is increased, so that the gripping force required to be exerted on the brake handle 1 by a user when the unpowered walker is parked is further reduced (e.g. about 1/12 or 1/15, etc. of the original gripping force).
The use of the integrated park system 100 for an unpowered walker according to an embodiment of the present invention will now be described in detail with reference to figures 1 to 5.
When the front end brake cable 2 and the rear end brake cable 13 are tightened, the brake 21 moves to a parking position to be in contact with the wheel 24, specifically, a brake plate of the brake 21 is in contact with the wheel 24, so that friction force is generated and the wheel 24 is prevented from moving, and a parking function is realized; when the front end brake cable 2 and the rear end brake cable 13 are released, the brake 21 is moved to the riding position spaced apart from the wheel 24, specifically, the brake plate of the brake 21 is lifted, so that the wheel 21 moves normally.
During parking, the initial position of the movable pulley 7 is positioned at one end of the first groove 8 far away from the fixed pulley 5, as shown in fig. 3, after the user holds the brake handle 1, the front brake cable 2 is tightened, the movable pulley 7 is moved upward along the first groove 8, after the movable pulley 7 contacts with the first spring 6, the first spring 6 contracts due to the pressure of the movable pulley 7, the first connecting piece 22 on the pulley seat of the movable pulley 7 moves upwards along with the movable pulley 7, the first limit terminal 10 of the first connecting piece 22 drives the traction rod 9 to move upwards, the traction rod 9 drives the second limit terminal 11 of the rear brake cable 13 to move upwards, so that the rear brake cable 13 is tensioned upwards, and the brake 21 moves to the parking position, in this park position, the brake pads of the brakes 21 contact the wheels 24, creating friction and resisting movement of the wheels 24, thereby enabling parking of the unpowered walker.
In the parking releasing process, as shown in fig. 4, after the user releases the brake handle 1, the front brake cable 2 is released, the movable pulley 7 moves downward under the action of the self-gravity and the elastic force of the first spring 6, the traction rod 9 also moves downward and returns to the initial position, the rear brake cable 13 is released, and the brake 21 moves to the driving position, in which the brake plate of the brake 21 is lifted, the brake plate is not in contact with the wheel 24, and the wheel 24 normally moves.
In the integrated parking system 100 for the unpowered walker as described above, the movable pulley 7 and the traction rod 9 may reduce the grip force that a user needs to apply to the brake handle 1 while the unpowered walker is parked, but increase the stroke of the front end brake cable 2, and for this reason, the sensitivity of the brake 21 may be adjusted, and a stroke accumulating mechanism that accumulates the stroke of the front end brake cable 2 by holding the brake handle 1 several times may be provided to the front end brake cable 2.
Specifically, as shown in fig. 6, the front brake cable 2 includes a first cable section 211 and a second cable section 212, and the integrated parking system 100 further includes a stroke accumulation mechanism connected between the first cable section 211 and the second cable section 212. The stroke summation mechanism comprises a support base 14 and a transmission rod 15, wherein the transmission rod 15 is rotatably connected with the support base 14 through a first one-way bearing (not shown). Preferably, the middle part of the transmission rod 15 is rotatably connected with the support seat 14 through a first one-way bearing. One end of the transmission rod 15 is connected with a first gear 16, a first rack 17 is meshed on the first gear 16, and the first gear 16 is provided with a toothless part 161; the other end of the transmission rod 15 is connected with a second gear 18 through a second one-way bearing (not shown), and a second rack 19 is meshed on the second gear 18. The second one-way bearing is configured such that when the second rack 19 is moved upward, no relative rotation occurs between the second gear 18 and the transmission lever 15. The first line section 211 is connected with the second rack 19, and the second line section 212 is connected with the first rack 17. Preferably, the support seat 14 is provided with two grooves, i.e. a second groove and a third groove, in which the first rack 17 and the second rack 19 are respectively arranged and movable. Preferably, the stroke summation mechanism further comprises a second spring 20 disposed within the third recess and above the second rack 19. The first one-way bearing and the second one-way bearing are opposite in rotating direction. For example, the first one-way bearing can only rotate counterclockwise and the second one-way bearing can only rotate clockwise.
In the use process of the stroke accumulation mechanism, when the brake handle 1 is held for the first time, the first line section 211 of the front brake cable 2 pulls the second rack 19 to move upwards, so as to drive the second gear 18 to rotate along the first direction. The inner and outer rings of the second one-way bearing between the second gear 18 and the driving rod 15 are locked, so that the second gear 18 and the driving rod 15 cannot rotate relatively, while the inner and outer rings of the first one-way bearing between the driving rod 15 and the supporting seat 14 are not locked, so that the driving rod 15 and the supporting seat 14 can rotate relatively, and therefore the driving rod 15 rotates along with the second gear 18, so that the first gear 16 rotates and drives the first rack 17 to move upwards. When the handle 1 is released, the second rack 19 moves back down to its initial position due to the gravity and the elastic force of the second spring 20 (if present), thereby rotating the second gear 18 in a second direction opposite to the first direction. In the process, the inner ring and the outer ring of the second one-way bearing between the second gear 18 and the transmission rod 15 are not locked, the second gear 18 and the transmission rod 15 can rotate relatively, the inner ring and the outer ring of the first one-way bearing between the transmission rod 15 and the supporting seat 14 are locked, the transmission rod 15 and the supporting seat 14 cannot rotate relatively, namely, after the brake handle 1 is released, the transmission rod 15 cannot be influenced by the downward movement of the second rack 19, the transmission rod 15 is kept still, and therefore the first gear 16 and the first rack 17 are kept still. Thus, the position of the first rack 17 can still be fixed after releasing the brake handle 1, so that the stroke of the second wire section 212 of the front brake wire 2 is maintained. When the brake handle 1 is held for the second time, the last movement is repeated, so that the first rack 17 continues to move upwards, and the accumulation of two strokes of the second line section 212 of the front end brake cable 2 is realized. When the brake handle 1 is continuously held to a certain extent, namely the toothless part 161 of the first gear 16 faces the first rack 17, the first gear 16 is dislocated from the first rack 17, the first rack 17 moves downwards to the initial position, and the brake releasing process is completed. Therefore, the accumulation of the stroke of the front brake cable 2 when the brake handle 1 is held for multiple times is completed, so that the stroke increase caused by the arrangement of the labor-saving integrated mechanism is compensated, and the sensitivity of the brake handle 1 does not need to be adjusted.
In an embodiment of the invention, which is not shown, the travel summation mechanism and the labor-saving integration mechanism may also be integrated in one housing, i.e. the travel summation mechanism may be arranged in the housing of the labor-saving integration mechanism above the pulley block and the drawbar.
In a second aspect of the invention, an unpowered walker is provided. The unpowered walker includes an integrated park system 100 for the unpowered walker as described above. Only the wheel support 23, wheels 24 of the unpowered walker and a portion of the integrated park system 100 are shown in fig. 2. As shown in fig. 2, the wheels 24 are attached to the bottom of the wheel bracket 23 and the housing 3 of the labor saving integrated mechanism of the integrated park system 100 is mounted on the wheel bracket 23 of the unpowered walker, preferably detachably mounted on the wheel bracket 23 of the unpowered walker by fasteners 4 (e.g., screws). The brakes 21 of the integrated parking system 100 are movable between a parking position in contact with the wheels 24 and a service position spaced from the wheels 24 as described above and will not be described again for brevity.
The invention has the beneficial effects that: compared with the prior art, the invention can effectively reduce the holding force which needs to be applied to the brake handle by a user when the unpowered walking aid is parked by arranging the labor-saving integrated mechanism, so that the unpowered walking aid is easier to park, the parking braking time is shortened, the probability of falling and vehicle rollover caused by untimely parking or insufficient parking force is reduced, the safety of the user in trip is protected, the risk of injury to the upper limbs of the user due to long-time use is avoided, and the labor-saving integrated mechanism has great practical significance and strong practical value; in addition, the stroke accumulation mechanism can accumulate the stroke of the front brake cable by holding the brake handle for multiple times, so that the stroke increase caused by the arrangement of the labor-saving integration mechanism is compensated, and the sensitivity of the brake handle does not need to be adjusted.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While the present invention has been described in connection with the embodiments, it is to be understood by those skilled in the art that the foregoing description and drawings are merely illustrative and not restrictive of the broad invention, and that this invention not be limited to the disclosed embodiments. Various modifications and variations are possible without departing from the spirit of the invention.
Claims (11)
1. An integrated parking system for an unpowered walking aid is characterized by comprising a brake handle, a front-end brake cable, a rear-end brake cable and a brake, wherein the brake handle is connected with the front end of the front-end brake cable, the rear end of the rear-end brake cable is connected with the brake,
the integrated parking system further comprises a labor-saving integrated mechanism, the labor-saving integrated mechanism comprises a shell, a movable pulley and a traction rod, the movable pulley and the traction rod are arranged in the shell, the rear end of a front-end brake cable bypasses the movable pulley and is fixed in the shell, the traction rod is located below the movable pulley, one end of the traction rod is hinged to the shell, the traction rod is connected with a pulley seat of the movable pulley at a first connecting part through a first connecting piece, the traction rod is connected to the front end of the rear-end brake cable at a second connecting part, and the second connecting part is closer to the one end of the traction rod than the first connecting part.
2. The integrated park system for an unpowered walker according to claim 1, wherein the labor-saving integrated mechanism further comprises a fixed pulley disposed in the housing, the rear end of the front end brake cable passing around the movable pulley and the fixed pulley and being fixed on a pulley seat of the fixed pulley or a pulley seat of the movable pulley.
3. The integrated park system for an unpowered walker according to claim 1, wherein the tow bar includes a first bar portion and a second bar portion disposed separately from the first bar portion, a first channel being disposed within the first bar portion and a second channel being disposed within the second bar portion, the tow bar further including a second connector disposed within the first and second channels, the second connector being movable along the first and second channels and securable at a plurality of locations within the first and second channels.
4. The integrated park system for an unpowered walker according to claim 1, wherein the traction rod includes a first rod portion bent toward the traveling block to form a first recess and a second rod portion bent toward a direction opposite to the direction of bending of the first rod portion to form a second recess; the rear end of the first connecting piece is provided with a first limiting terminal, the front end of the rear end brake cable is provided with a second limiting terminal, the first connecting piece penetrates through the first rod part at the first connecting part and the first limiting terminal is arranged in the first concave part, and the rear end brake cable penetrates through the second rod part at the second connecting part and the second limiting terminal is arranged in the second concave part.
5. The integrated park system for an unpowered walker according to claim 1, wherein the interior of the housing is provided with a first groove along which the movable pulley is movable.
6. The integrated park system for an unpowered walker according to claim 5, wherein a first spring is provided at least one end within the first recess.
7. The integrated parking system for an unpowered walker according to any one of claims 1-6, wherein the front brake cable comprises a first line section and a second line section, the integrated parking system further comprising a stroke summation mechanism connected between the first line section and the second line section, the stroke summation mechanism comprising a support base and a transmission rod, the transmission rod being rotatably connected with the support base through a first one-way bearing, one end of the transmission rod being connected with a first gear, a first rack being engaged on the first gear, the first gear being provided with a non-toothed portion; the other end of the transmission rod is connected with a second gear through a second one-way bearing, a second rack is meshed on the second gear, and the second one-way bearing is configured in such a way that when the second rack moves upwards, the second gear and the transmission rod do not rotate relatively; the first wire section is connected with the second rack and the second wire section is connected with the first rack; the rotatable direction of the first one-way bearing is opposite to the rotatable direction of the second one-way bearing.
8. The integrated park system for an unpowered walker according to claim 7, wherein the support seat is provided with second and third recesses, the first and second racks being disposed within and movable within the second and third recesses, respectively.
9. The integrated park system for an unpowered walker according to claim 8, wherein the travel summation mechanism further includes a second spring disposed within the third recess and above the second rack.
10. An unpowered walker, characterized in that the unpowered walker comprises:
a wheel carrier;
a wheel attached to a bottom of the wheel bracket; and
an integrated park system for an unpowered walker according to any one of claims 1 to 9,
wherein, integrated form parking system the brake can move between parking position and driving position, works as front end brake cable with when rear end brake cable tightens up, the brake moves to the parking position, the brake with the wheel contact, works as front end brake cable with when rear end brake cable relaxes, the brake moves to during the driving position, the brake with the wheel is spaced apart.
11. The unpowered walker of claim 10 wherein the housing of the effort-saving integrated mechanism is mounted on a wheel cradle of the unpowered walker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388612.2A CN112972216B (en) | 2021-04-12 | 2021-04-12 | Integrated parking system for unpowered walking aid and unpowered walking aid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388612.2A CN112972216B (en) | 2021-04-12 | 2021-04-12 | Integrated parking system for unpowered walking aid and unpowered walking aid |
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| Publication Number | Publication Date |
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| CN112972216A true CN112972216A (en) | 2021-06-18 |
| CN112972216B CN112972216B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110388612.2A Active CN112972216B (en) | 2021-04-12 | 2021-04-12 | Integrated parking system for unpowered walking aid and unpowered walking aid |
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| KR920004202A (en) * | 1990-08-31 | 1992-03-27 | 김문환 | Automatic driving speed of car |
| CN102619711A (en) * | 2012-04-18 | 2012-08-01 | 杨亦勇 | Vibrational kinetic energy power generation method for electric automobiles |
| CN106214431A (en) * | 2016-07-19 | 2016-12-14 | 武克易 | A kind of medical rehabilitation walking aid |
| US9707436B1 (en) * | 2014-11-17 | 2017-07-18 | Brunswick Corporation | Exercise equipment and connector apparatuses for exercise equipment |
| CN206634011U (en) * | 2017-03-20 | 2017-11-14 | 王秉文 | New Type of Railway Freight Cars vehicle rim brake |
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2021
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920004202A (en) * | 1990-08-31 | 1992-03-27 | 김문환 | Automatic driving speed of car |
| CN102619711A (en) * | 2012-04-18 | 2012-08-01 | 杨亦勇 | Vibrational kinetic energy power generation method for electric automobiles |
| US9707436B1 (en) * | 2014-11-17 | 2017-07-18 | Brunswick Corporation | Exercise equipment and connector apparatuses for exercise equipment |
| CN106214431A (en) * | 2016-07-19 | 2016-12-14 | 武克易 | A kind of medical rehabilitation walking aid |
| CN206634011U (en) * | 2017-03-20 | 2017-11-14 | 王秉文 | New Type of Railway Freight Cars vehicle rim brake |
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| CN112972216B (en) | 2022-03-22 |
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