CN111604887A - Utensil and wearing formula transport are assisted to two-state locking Assembly and material transport - Google Patents
Utensil and wearing formula transport are assisted to two-state locking Assembly and material transport Download PDFInfo
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- CN111604887A CN111604887A CN202010381641.1A CN202010381641A CN111604887A CN 111604887 A CN111604887 A CN 111604887A CN 202010381641 A CN202010381641 A CN 202010381641A CN 111604887 A CN111604887 A CN 111604887A
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- pawl
- ratchet wheel
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- way tooth
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- 239000000463 material Substances 0.000 title claims abstract description 39
- 210000003781 tooth socket Anatomy 0.000 claims abstract description 8
- 238000005007 materials handling Methods 0.000 claims description 6
- 210000000707 wrist Anatomy 0.000 claims description 5
- 230000002902 bimodal effect Effects 0.000 claims 2
- 230000007246 mechanism Effects 0.000 abstract description 9
- 210000000245 forearm Anatomy 0.000 description 47
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000023178 Musculoskeletal disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/0006—Exoskeletons, i.e. resembling a human figure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J17/00—Joints
- B25J17/02—Wrist joints
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- Mechanical Engineering (AREA)
- Prostheses (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention relates to a two-state locking assembly, which comprises a ratchet wheel and a base, wherein the base is hinged to a ratchet wheel rotating shaft and is provided with a pawl and a spring; the two ends of the spring are respectively connected to the base and one end of the pawl, the other end of the pawl is driven to abut against the ratchet wheel, the ratchet wheel is provided with a one-way tooth groove and an arc-shaped groove, the arc-shaped groove is arranged on one side of the one-way tooth groove, the one-way tooth groove inclines towards the direction of the arc-shaped groove, the other end of the pawl is matched with the one-way tooth groove, and when the ratchet wheel rotates along the first direction to enable the other end of the pawl; when the ratchet wheel rotates along the second direction to enable the other end of the pawl to slide through the arc-shaped groove, the other end of the pawl is vacated to pass through the one-way tooth groove, and the first direction is opposite to the second direction. The ratchet wheel mechanism is adopted for unidirectional locking, and the pawl slides in the arc-shaped groove of the ratchet wheel to generate an emptying posture and passes through the unidirectional tooth socket of the ratchet wheel to realize unlocking. The invention also relates to a material handling auxiliary tool and a wearable handling auxiliary tool.
Description
Technical Field
The invention relates to the technical field of mechanical locking, in particular to a two-state locking assembly, a material carrying auxiliary tool and a wearable carrying auxiliary tool.
Background
The ratchet mechanism is a unidirectional intermittent motion mechanism consisting of a ratchet wheel and a pawl.
One type of seat armrest employs a ratchet mechanism, which is a structure that can be locked by being lifted up and then lowered down again. The working principle of the ratchet mechanism is as follows: as shown in fig. 10, the base 11 is fixedly disposed, and the spring 12 on the base 11 provides a continuous pulling force to the seat pawl 74, so that the seat pawl 74 remains "gripped" to the seat ratchet 73. The side wall of the seat ratchet wheel 73 is provided with a shift point 731, and the movable plate 72 hinged on the rotating shaft of the seat ratchet wheel 73 is provided with an arc-shaped groove 721 to provide a movement space for the shift point 731 of the seat ratchet wheel 73. The armrest 71 is fixed to a rotation shaft of the seat ratchet 73 and rotates in synchronization with the seat ratchet 73.
When the chair starts to operate, the armrest 71 is pulled upwards, the seat ratchet wheel 73 synchronously rotates, the shift point 731 moves in the arc-shaped groove 721 of the movable disc 72, and the movable disc 72 cannot rotate along with the seat ratchet wheel 73. When the seat pawl 74 is engaged with the teeth of the seat ratchet 73, the armrest 71 is locked in one direction, and the armrest 71 does not fall down even if the armrest 71 is pressed down. When the armrest 71 is further pulled upwards, the seat ratchet wheel 73 drives the movable disc 72 to rotate through the shift point 731, and the movable disc 72 jacks up the seat pawl 74, so that the seat pawl 74 is disengaged from the tooth groove of the seat ratchet wheel 73, and the seat is unlocked. When the armrest 71 is pressed downwards, the seat ratchet wheel 73 rotates in the opposite direction, the shift point 731 of the seat ratchet wheel 73 moves in the opposite direction in the arc-shaped slot 721 of the movable disc 72, and the movable disc 72 cannot rotate along with the seat ratchet wheel 73. Continuing to depress the armrest 71, the shift point 731 moves to the end of the arcuate slot 721 and the movable plate 72 begins to rotate with the seat ratchet 73. When the movable plate 72 is no longer against the seat pawl 74, the seat ratchet 73 has rotated past the detent position of the seat pawl 74, so that the armrest 71 is free to be depressed.
The ratchet mechanism has the following technical problems: the arcuate slot length of the movable disk needs to be precisely designed to match the motion of the ratchet stop. If the length of the arc-shaped groove is too long, the distance of a seat ratchet gear point in the arc-shaped groove is too long, the seat ratchet needs to rotate by a large angle to drive the movable disc to jack the seat pawl, the unlocking time is too long, and the user experience is poor; if the length of the arc-shaped groove is too short, the armrest is pressed down when the unlocking is needed, the movable disc is driven by the gear point to leave the seat pawl too early, the movable disc does not support the seat pawl any more, the seat pawl is clamped into the tooth groove of the seat ratchet again, the armrest cannot restore to be pressed down freely, and the unlocking cannot be successful.
Disclosure of Invention
Aiming at the technical problems in the prior art, one of the purposes of the invention is as follows: the utility model provides a two-state locking assembly, it adopts ratchet mechanism to carry out one-way locking, slides at ratchet arc recess through the pawl and produces the attitude of vacating and cross the one-way tooth's socket of ratchet and realize the unblock, need not to design complicated movable disc and arc wall and calculate the stroke of moving of gear point in the movable disc arc wall, and the structure is simplified greatly, and the unblock time is short, and user experience is good.
Aiming at the technical problems in the prior art, the second purpose of the invention is as follows: the utility model provides a material handling assists utensil, it can be with the material apply the human forearm power through on the binary state locking Assembly shifts human upper arm and shoulder, greatly reduced the burden of forearm, effectively reduced forearm fatigue degree, make the handling operation lighter.
Aiming at the technical problems in the prior art, the invention also aims to provide: the utility model provides a utensil is assisted in wearing formula transport, it can pass through binary locking subassembly and chest band with the material and transfer left shoulder, right shoulder, chest and back to the power of applying left forearm and right forearm to the human body, has alleviateed the burden of left forearm and right forearm greatly, has effectively reduced left forearm and right forearm fatigue degree, makes the transport operation lighter.
In order to achieve the purpose, the invention adopts the following technical scheme:
a two-state locking assembly comprises a ratchet wheel and a base, wherein the base is hinged to a ratchet wheel rotating shaft and is provided with a pawl and a spring; the two ends of the spring are respectively connected to the base and one end of the pawl, the other end of the pawl is driven to abut against the ratchet wheel, the ratchet wheel is provided with a one-way tooth groove and an arc-shaped groove, the arc-shaped groove is arranged on one side of the one-way tooth groove, the one-way tooth groove inclines towards the direction of the arc-shaped groove, the other end of the pawl is matched with the one-way tooth groove, and when the ratchet wheel rotates along the first direction to enable the other end of the pawl; when the ratchet wheel rotates along the second direction to enable the other end of the pawl to slide through the arc-shaped groove, the other end of the pawl is vacated to pass through the one-way tooth groove, and the first direction is opposite to the second direction.
Furthermore, the other end of the pawl is provided with a tip part and a protruding part, the tip part and the protruding part are respectively arranged on two sides of the other end of the pawl, the tip part is arranged corresponding to the one-way tooth groove, and when the ratchet wheel rotates along the first direction to enable the tip part to slide through the one-way tooth groove, the tip part is matched with the one-way tooth groove to unidirectionally lock the ratchet wheel; when the ratchet wheel is locked in one way, the protruding part is positioned between the tip part and the arc-shaped groove, and when the ratchet wheel rotates in the second direction to enable the protruding part to slide through the arc-shaped groove, the protruding part is emptied to cross the one-way tooth groove.
Further, the surface of the protruding part is a cambered surface.
A material handling assistive device comprises a first rigid piece, a second rigid piece and a two-state locking assembly, wherein one end of the first rigid piece is provided with a connecting device capable of being connected to a wrist of a human body, the other end of the first rigid piece is fixedly connected to a ratchet wheel rotating shaft, one end of the second rigid piece is movably connected with a wearable shoulder sleeve, the other end of the second rigid piece is fixedly connected to a base, the first rigid piece drives a ratchet wheel to rotate along a first direction, so that when the other end of a pawl slides through a one-way tooth socket, the other end of the pawl is matched with the one-way tooth socket to lock the ratchet; the first rigid piece drives the ratchet wheel to rotate along the second direction, so that when the other end of the pawl slides through the arc-shaped groove, the other end of the pawl empties to cross the one-way tooth groove.
Furthermore, the connecting device is a glove, an elastic bridle is arranged between the glove and the wearable shoulder sleeve, and two ends of the elastic bridle are respectively connected to the glove and the wearable shoulder sleeve.
Furthermore, the two ends of the elastic bridle are respectively connected to the upper end of the glove and the front end of the wearable shoulder sleeve, the first rigid part is connected to the lower end of the glove, and the second rigid part is connected to the rear end of the wearable shoulder sleeve.
Further, the elastic bridle is connected to the glove through a magic tape.
Furthermore, the middle part of the glove is provided with an elastic groove.
The utility model provides a utensil is assisted in wearing formula transport, includes that 2 materials handling assists the utensil, is equipped with the chest band between 2 wearing formula shoulder covers, and chest band both sides are connected respectively in 2 wearing formula shoulder covers, and the chest band is used for embracing human chest, and the chest band is equipped with chest buckle and length adjustment device.
Furthermore, a waist belt is arranged below the chest belt, an X-shaped belt is arranged between the waist belt and the chest belt, the upper end of the X-shaped belt is connected to the rear end of the chest belt, the lower end of the X-shaped belt is connected to the rear end of the waist belt, the waist belt is used for encircling the waist of the human body, and the waist belt is provided with a waist buckle and a length adjusting device.
In summary, the present invention has the following advantages:
adopt ratchet to carry out one-way locking, slide at ratchet arc recess through the pawl and produce the one-way tooth's socket of ratchet and cross the unblock of ratchet, need not to design complicated movable plate and arc wall and calculate the stroke that moves of gear point in the movable plate arc wall, the structure is simplified greatly, can obtain reliable one-way locking effect and unblock effect simultaneously, and the unblock time is short, and user experience is good.
Drawings
Fig. 1 is a schematic plan view of a two-state locking assembly according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
FIG. 3 is a schematic view of the ratchet wheel in a one-way locking state.
Fig. 4 is a state diagram of the moment the pawl empties from the arc-shaped groove when unlocking.
Figure 5 is a schematic view of pawl emptying past a one-way slot.
Fig. 6 is a schematic perspective view of a material handling auxiliary tool according to an embodiment of the present invention.
Fig. 7 is a schematic view of the connection of the first rigid member, the second rigid member and the binary locking assembly.
Fig. 8 is a schematic perspective view of a wearable transportation aid according to an embodiment of the invention.
Fig. 9 is a schematic perspective view of another perspective view of a wearable carrying aid according to an embodiment of the invention.
FIG. 10 is a schematic view of a prior art ratchet mechanism.
Description of reference numerals:
1-a two-state locking component, 11-a base, 12-a spring, 13-a pawl, 131-a tip, 132-a protrusion, 14-a ratchet wheel, 141-a one-way tooth groove, 142-an arc groove, 143-a ratchet wheel rotating shaft;
21-a first rigid member, 22-a second rigid member;
31-elastic band, 32-wearable shoulder sleeve, 33-glove, 34-magic tape;
4-chest belt, 41-chest buckle;
5-waist belt, 51-waist buckle;
6-X-shaped band;
71-armrest, 72-movable disk, 721-arc slot, 73-seat ratchet wheel, 731-shift point, 74-seat pawl.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1-5, a two-state locking assembly comprises a ratchet 14 and a base 11, wherein the base 11 is hinged on a ratchet rotating shaft 143, and the base 11 is provided with a pawl 13 and a spring 12; two ends of the spring 12 are respectively connected to the base 11 and one end of the pawl 13 to drive the other end of the pawl 13 to abut against the ratchet wheel 14, the ratchet wheel 14 is provided with a one-way tooth groove 141 and an arc-shaped groove 142, the arc-shaped groove 142 is arranged on one side of the one-way tooth groove 141, the one-way tooth groove 141 inclines towards the direction of the arc-shaped groove 142, the other end of the pawl 13 is matched with the one-way tooth groove 141, and when the ratchet wheel 14 rotates along the first direction to enable the other end of the pawl 13 to slide through the one-way; when the ratchet wheel 14 is rotated in the second direction to slide the other end of the pawl 13 through the arc-shaped groove 142, the other end of the pawl 13 rides over the one-way spline 141, and the first direction is opposite to the second direction.
Specifically, one end of the spring 12 is fixed to the base 11, and the other end is fixed to one end of the pawl 13. The pawl 13 is pivotally connected to the base 11 by a hinge shaft. The spring 12 is pre-tensioned when installed and the resulting retraction force urges the pawl 13 to rotate about the hinge axis, causing the other end of the pawl 13 to bear against the ratchet 14.
The ratchet 14 rotates in a first direction, which is clockwise as viewed in fig. 1, and the other end of the pawl 13 slides on the ratchet 14. When the ratchet 14 rotates clockwise, the arc-shaped groove 142 is located downstream of the one-way tooth groove 141. When the other end of the pawl 13 slides over the one-way tooth groove 141, the other end of the pawl 13 is engaged with the one-way tooth groove 141, and the other end of the pawl 13 is engaged with the one-way tooth groove 141 to engage with the one-way locking ratchet 14. At this time, the ratchet 14 is restricted by the pawl 13 and cannot rotate counterclockwise.
When the ratchet 14 continues to rotate clockwise, the other end of the pawl 13 slides out of the one-way tooth groove 141 in the oblique direction of the one-way tooth groove 141 and slides through the arc-shaped groove 142.
After the other end of the pawl 13 slides out of the one-way tooth slot 141 and slides through the arc-shaped groove 142, an unlocking action can be performed. The ratchet 14 rotates in a second direction, which is counterclockwise, and the other end of the pawl 13 slides on the ratchet 14 in the opposite direction. When the other end of the pawl 13 slides through the arc-shaped groove 142, because the arc-shaped groove 142 has an upward angle along the groove surface, referring to the principle that a carrier aircraft jumps on an inclined deck, the other end of the pawl 13 can generate an emptying gesture and fly to the direction of the one-way tooth socket 141 when sliding in the opposite direction of the arc-shaped groove 142. When the ratchet 14 rotates counterclockwise faster, the other end of the pawl 13 slides in the opposite direction rapidly on the curved groove 142, thereby creating a longer dwell time after the flight. During this period of lost motion, the spring 12 has no time to force the other end of the pawl 13 back into the ratchet 14 and the other end of the pawl 13 has emptied past the one-way slot 141 in the ratchet 14, thereby unlocking the ratchet 14. At this time, the ratchet 14 is no longer restrained by the pawl 13 and can rotate counterclockwise.
By providing springs 12 of different specifications or adjusting the amount of pretension of the springs 12, an appropriate spring force of the springs 12 can be obtained. When the ratchet wheel 14 rotates clockwise, the other end of the pawl 13 can be pressed on the ratchet wheel 14 by proper elasticity of the spring 12, and the one-way locking effect cannot be influenced; when the ratchet wheel 14 rotates counterclockwise, before the other end of the pawl 13 is emptied to pass over the one-way tooth groove 141 of the ratchet wheel 14, the other end of the emptied pawl 13 is not pressed against the one-way tooth groove 141 of the ratchet wheel 14 by the proper elastic force of the spring 12, and the unlocking effect is not affected.
According to the two-state locking assembly 1, the ratchet mechanism is adopted for one-way locking, the pawl 13 slides in the arc-shaped groove 142 of the ratchet wheel 14 to generate an emptying posture to cross the one-way tooth groove 141 of the ratchet wheel 14 to realize unlocking, a complex movable disc and an arc-shaped groove are not required to be designed, the movable stroke of a shift point in the arc-shaped groove of the movable disc is not required to be calculated, the structure is greatly simplified, a reliable one-way locking effect and an unlocking effect can be obtained at the same time, the unlocking time is short, and the user experience is.
Further, the other end of the pawl 13 is provided with a tip part 131 and a protruding part 132, the tip part 131 and the protruding part 132 are respectively arranged at two sides of the other end of the pawl 13, the tip part 131 is arranged corresponding to the one-way tooth slot 141, when the ratchet wheel 14 rotates along the first direction to enable the tip part 131 to slide through the one-way tooth slot 141, the tip part 131 is matched with the one-way tooth slot 141 to lock the ratchet wheel 14 in one way; when the ratchet wheel 14 is locked in one direction, the protrusion 132 is located between the tip 131 and the arc-shaped groove 142, and when the ratchet wheel 14 rotates in the second direction to make the protrusion 132 slide through the arc-shaped groove 142, the protrusion 132 is vacated and goes over the one-way tooth slot 141.
When the tip part 131 is clamped into the one-way tooth slot 141, the tip part 131 is arranged corresponding to the one-way tooth slot 141, the tip structure cannot reversely slide out of the one-way tooth slot 141 when the ratchet 14 is locked, and the one-way locking effect is more reliable. The tip portion 131 and the projection 132 are disposed adjacent to each other, and are located on both sides of the other end of the pawl 13. When the ratchet 14 rotates clockwise, the projection 132 and the tip 131 contact the ratchet 14 in order. When the ratchet 14 rotates counterclockwise, the tip portion 131 and the projection 132 contact the ratchet 14 in order.
During the process of flying tip 131 over one-way tooth slot 141, tip 131 may be pressed into one-way tooth slot 141 of ratchet wheel 14 by spring 12 before passing over one-way tooth slot 141 due to the tendency of spring 12 to press the other end of pawl 13 back onto ratchet wheel 14, thereby causing unlocking failure.
The protrusion 132 is provided to allow the other end of the pawl 13 to run up in the arcuate groove 142 before the second flight. The run-up of the protruding portion 132 enhances the flying state of the other end of the whole pawl 13, the superposition effect of two successive flying takes-off of the tip portion 131 and the protruding portion 132 overcomes the elastic force of the spring 12, and the tip portion 131 and the protruding portion 132 successfully fly over the one-way tooth groove 141 in the flying process before being pressed into the one-way tooth groove 141 of the ratchet wheel 14 by the spring 12, so that the unlocking of the ratchet wheel 14 is finally completed.
Further, the surface of the protrusion 132 is a cambered surface.
The protrusion 132 has an arc-shaped cross section. When unlocking is needed, the arc-shaped protruding part 132 slides on the arc-shaped groove 142, the arc surface of the protruding part 132 is sequentially contacted with the arc-shaped groove 142 from one end close to the tip part 131 to one end far away from the tip part 131, and a trend of rotating and throwing upwards is generated in the running process, so that the other end of the pawl 13 is emptied from the arc-shaped groove 142 for a longer time, and the pawl is easier to successfully fly over the one-way tooth socket 141 before being pressed into the one-way tooth socket 141 of the ratchet wheel 14 by the spring 12, and the final unlocking purpose is realized. Meanwhile, even if the protrusion 132 is pressed into the one-way tooth groove 141 in the flying process due to insufficient idle time or too strong elasticity of the spring 12, the unique arc design of the protrusion 132 can help the protrusion 132 to slip out of the one-way tooth groove 141, so that unlocking is successful. .
With the development of scientific technology, automation becomes a rapidly growing field. There are many work scenarios where manual material handling is not possible, even though the machine has helped the human being to free it from some of the burdensome work.
The applicant has found that when a person lifts the material by hand, the forearm is generally subjected to more force, and in particular when the forearm is lifted upwards, the moment applied to the forearm by the material is greater and the forearm is more prone to fatigue.
Therefore, there is a need to develop a material handling aid that can effectively reduce the fatigue of the forearm when a person lifts the material with the hand.
As shown in fig. 6, the material handling auxiliary tool of the present invention includes a first rigid member 21, a second rigid member 22 and a two-state locking assembly 1, wherein one end of the first rigid member 21 is provided with a connecting device capable of connecting to a wrist of a human body, the other end of the first rigid member 21 is fixedly connected to a ratchet wheel rotating shaft 143, one end of the second rigid member 22 is movably connected to a wearable shoulder sleeve 32, the other end of the second rigid member 22 is fixedly connected to a base 11, the first rigid member 21 drives a ratchet wheel 14 to rotate along a first direction so that the other end of a pawl 13 slides through a one-way tooth socket 141, and the other end of the pawl 13 is matched with the one-way locking ratchet wheel 14; when the first rigid member 21 rotates the ratchet wheel 14 in the second direction to slide the other end of the pawl 13 through the arc-shaped groove 142, the other end of the pawl 13 is vacated over the one-way slot 141.
Specifically, the first rigid member 21 is disposed along the length direction of the forearm, one end of the first rigid member 21 is fixed to the wrist of the human body through a connecting device, and the other end is fixedly connected to the ratchet rotating shaft 143 of the binary locking assembly 1, so as to drive the ratchet 14 to rotate.
The second rigid part 22 is arranged along the length direction of the upper arm of the human body, one end of the second rigid part 22 is movably connected to the wearable shoulder sleeve 32 and can rotate or twist with the wearable shoulder sleeve 32, the other end of the second rigid part 22 is fixedly connected to the base 11 of the two-state locking assembly 1, and when the second rigid part 22 is kept still, the pawl 13 is also kept still.
The binary locking component 1 is positioned at the elbow joint of a human body, and the wearable shoulder sleeve 32 is sleeved on the shoulder of the human body.
When a person lifts the material with hands, the upper arm of the person and the second rigid part 22 are basically kept still, and the forearm drives the first rigid part 21 and the ratchet wheel 14 to rotate relative to the upper arm and the second rigid part 22 along the first direction. As shown in fig. 7, the first direction is clockwise, and the included angle between the first rigid member 21 and the second rigid member 22 gradually decreases with the rotation of the first rigid member 21. When the forearm is raised to a certain angle and the other end of the pawl 13 slides through the one-way tooth groove 141, the other end of the pawl 13 is matched with the one-way locking ratchet wheel 14 in the one-way tooth groove 141, so that the first rigid part 21 and the second rigid part 22 are locked in a one-way mode, and the first rigid part 21 cannot rotate anticlockwise relative to the second rigid part 22. At this moment, the forearms of people can be relaxed, the materials do not need to be lifted by a large force, the gravity applied to the forearms by the materials can be transferred to the first rigid part 21 and is transferred to the second rigid part 22 and the wearable shoulder sleeve 32 through the two-state locking assembly 1, and the upper arms and the shoulders which are stronger than the forearms bear the weight of the materials, so that the burden of the forearms is greatly reduced, the fatigue of the forearms is effectively reduced, and the carrying operation is easier. The wearable shoulder sleeve 32 has a large contact area with the shoulders, and the shoulders bear small pressure, so that the shoulder sleeve is not easy to fatigue.
When unlocking is required, firstly, the front arm continues to rotate along the first direction, the first rigid part 21 and the ratchet wheel 14 are driven to rotate, and the pawl 13 slides out of the one-way tooth slot 141 along the inclination direction of the one-way tooth slot 141 and slides through the arc-shaped groove 142. The forearm then carries the first rigid part 21 and the ratchet 14 to rotate rapidly in the second direction, i.e. anticlockwise. The other end of the pawl 13 empties over the one-way spline 141 after rapid run-up in the arcuate groove 142, unlocking the ratchet 14 and allowing the first rigid part 21 to resume two-way rotation. During specific operation, after the materials are lifted to the destination, the materials are placed on the ground, and the front arm is naturally lifted by a small section and is quickly pressed down, so that unlocking can be realized.
The initial relative position between the binary locking assembly 1 and the first and second rigid members 21, 22 can be set as desired. For example, when the forearm and the upper arm are straight, that is, when the angle between the first rigid member 21 and the second rigid member 22 is 180 °, the angle between the other end of the pawl 13 and the rotation axis of the ratchet 14 and the angle between the rotation axis 143 of the ratchet and the one-way tooth groove 141 are set to be θ, as shown in fig. 7, in terms of clockwise rotation, the one-way tooth groove 141 is located downstream of the other end of the pawl 13, and the arc-shaped groove 142 is located downstream of the one-way tooth groove 141. With the lifting and rotation of the forearm, the included angle between the first rigid member 21 and the second rigid member 22 is gradually reduced, and when the included angle between the other end of the pawl 13 and the ratchet rotating shaft 143 and the included angle between the ratchet rotating shaft 143 and the one-way tooth groove 141 are changed from theta to 0, that is, the other end of the pawl 13 is clamped into the one-way tooth groove 141, so that one-way locking is realized.
The connecting device is a glove 33, an elastic belt 31 is arranged between the glove 33 and the wearable shoulder sleeve 32, and two ends of the elastic belt 31 are respectively connected to the glove 33 and the wearable shoulder sleeve 32.
By wearing the glove 33, one end of the first rigid member 21 can be fixed to the wrist, so that the forearm can rotate while driving the first rigid member 21 to rotate.
When lifting material, the moment of lifting the material from the ground often requires the most effort. The length of the elastic band 31 is set to be proper, so that the elastic band 31 is in a stretched state when the included angle between the first rigid member 21 and the second rigid member 22 is 180 °. When the forearm lifts the material, the retraction force of the elastic strap 31 connected to the wearable shoulder strap 32 makes the included angle between the first rigid member 21 and the second rigid member 22 smaller, so that a large supporting force can be applied to the forearm at the moment of lifting the material, and the burden of the forearm can be reduced.
The elastic belt 31 is connected at its both ends to the upper end of the glove 33 and the front end of the wearable shoulder cap 32, respectively, the first rigid member 21 is connected to the lower end of the glove 33, and the second rigid member 22 is connected to the rear end of the wearable shoulder cap 32.
The two ends of the elastic belt 31 are connected to the upper end of the glove 33 and the front end of the wearable shoulder cap 32, i.e. the elastic belt 31 is disposed above the forearm and the upper arm, when the forearm lifts the material, the elastic belt 31 can pull the first rigid member 21 toward the second shoulder direction more easily, which helps to reduce the burden on the forearm. The first rigid part 21 is connected to the lower end of the glove 33, and the second rigid part 22 is connected to the rear end of the wearable shoulder sleeve 32, that is, the first rigid part 21 and the second rigid part 22 are arranged behind the forearm and the upper arm of the human body, when the forearm and the upper arm rotate, the rear first rigid part 21 and the rear second rigid part 22 are driven to rotate correspondingly, and the first rigid part 21 and the second rigid part 22 do not interfere with the movement of the forearm and the upper arm.
The elastic band 31 is connected to the glove 33 by means of a hook and loop fastener 34. The magic tape 34 is convenient to connect or detach.
The middle part of the glove 33 is provided with an elastic groove.
After the palm struts gloves 33, the elastic groove is opened, and the elastic groove can accommodate materials of various shapes, and is particularly suitable for taking blocky, strip-shaped or granular materials. Through elastic material characteristic buffering material impact and reduce the material risk of dropping, can let material handling operation labour-saving, safe, comfortable more.
In order to achieve better human-computer interaction and achieve harmony and unity of a worker-material-operation environment system, a wearable carrying auxiliary tool needs to be developed, the principle of manual carrying is taken as a guide element, and methods such as gravity center transfer, force transfer, energy transfer and the like are utilized, so that the working efficiency is improved, and occupational musculoskeletal diseases and economic losses are reduced.
As shown in fig. 8 and 9, the wearable auxiliary carrying tool of the present invention comprises 2 auxiliary carrying tools, wherein 1 wearable shoulder strap 32 is respectively disposed on each of the 2 auxiliary carrying tools, a chest strap 4 is disposed between the 2 wearable shoulder straps 32, two sides of the chest strap 4 are respectively connected to the 2 wearable shoulder straps 32, the chest strap 4 is used for encircling the chest of a human body, and the chest strap 4 is provided with a chest buckle 41 and a length adjusting device.
In particular, the left hand and the right hand are each provided with a material handling aid, enabling the left hand and the right hand to cooperate together to handle longer or heavier materials. 2 wearing formula shoulder straps 32 dress respectively in left shoulder and right shoulder, and two material handling assistive devices about chest band 4 will be connected, and the length adjustment device of chest band 4 can adapt to different briskets of different workman to lock with chest buckle 41.
When the worker lifts the materials with both hands, 2 first rigid parts 21 in 2 material handling assistive devices are driven by the left forearm and the right forearm respectively to rotate upwards to lift. When the first rigid part 21 rotates to a certain angle, the 2 first rigid parts 21 are all locked in one direction. The left forearm and right forearm of the worker can now be relaxed and the weight of the material is transferred from the 2 first rigid parts 21 to the 2 second rigid parts 22 and further to the left upper arm, the right upper arm, the left shoulder and the right shoulder and further to the chest and back by means of the chest strap 4. Through the multiple force transfer, the force applied to the left forearm and the right forearm by the materials is borne by the stronger left shoulder, the stronger right shoulder, the stronger chest and the stronger back, so that the burden of the left forearm and the right forearm is greatly reduced, the fatigue of the left forearm and the right forearm is effectively reduced, and the carrying operation is easier.
A waist belt 5 is arranged below the chest belt 4, an X-shaped belt 6 is arranged between the waist belt 5 and the chest belt 4, the upper end of the X-shaped belt 6 is connected to the rear end of the chest belt 4, the lower end of the X-shaped belt 6 is connected to the rear end of the waist belt 5, the waist belt 5 is used for encircling the waist of a human body, and the waist belt 5 is provided with a waist buckle 51 and a length adjusting device.
The length adjusting means of the waist belt 5 can be adapted to different waistlines of different workers and is locked by the waist buckle 51. After the force applied to the left forearm and the right forearm is transmitted to the chest and the back, the force is further transmitted to the waist through the X-shaped belt 6, so that the whole upper part of the body participates in sharing the weight of the material. The X-shaped belt 6 has a wide coverage, can share the force of the back on a large scale, enables the back muscle not to be easily injured, and improves the safety.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A two-state locking assembly comprises a ratchet wheel and a base, wherein the base is hinged to a ratchet wheel rotating shaft and is provided with a pawl and a spring; spring both ends are connected respectively in base and pawl one end, orders about pawl other end butt in ratchet, its characterized in that: the ratchet wheel is provided with a one-way tooth groove and an arc-shaped groove, the arc-shaped groove is arranged on one side of the one-way tooth groove, the one-way tooth groove inclines towards the arc-shaped groove, the other end of the pawl is matched with the one-way tooth groove, and when the ratchet wheel rotates along a first direction to enable the other end of the pawl to slide through the one-way tooth groove, the other end of the pawl is matched with the one; when the ratchet wheel rotates along the second direction to enable the other end of the pawl to slide through the arc-shaped groove, the other end of the pawl is vacated to pass through the one-way tooth groove, and the first direction is opposite to the second direction.
2. A bimodal locking assembly according to claim 1, wherein: the other end of the pawl is provided with a tip part and a protruding part, the tip part and the protruding part are respectively arranged on two sides of the other end of the pawl, the tip part is arranged corresponding to the one-way tooth groove, and when the ratchet wheel rotates along the first direction to enable the tip part to slide through the one-way tooth groove, the tip part is matched with the one-way tooth groove to lock the ratchet wheel in a one-way; when the ratchet wheel is locked in one way, the protruding part is positioned between the tip part and the arc-shaped groove, and when the ratchet wheel rotates in the second direction to enable the protruding part to slide through the arc-shaped groove, the protruding part is emptied to cross the one-way tooth groove.
3. A bimodal locking assembly according to claim 2, wherein: the surface of the protruding part is a cambered surface.
4. A material handling assistive device is characterized in that: the two-state locking assembly comprises a first rigid part, a second rigid part and the two-state locking assembly as claimed in any one of claims 1 to 3, wherein one end of the first rigid part is provided with a connecting device capable of being connected to a wrist of a human body, the other end of the first rigid part is fixedly connected to a ratchet wheel rotating shaft, one end of the second rigid part is movably connected with a wearable shoulder sleeve, the other end of the second rigid part is fixedly connected to a base, the first rigid part drives a ratchet wheel to rotate along a first direction, so that when the other end of a pawl slides through a one-way tooth socket, the other end of the pawl is matched with the one-; the first rigid piece drives the ratchet wheel to rotate along the second direction, so that when the other end of the pawl slides through the arc-shaped groove, the other end of the pawl empties to cross the one-way tooth groove.
5. A materials handling aid as claimed in claim 4, wherein: the connecting device is a glove, an elastic bridle is arranged between the glove and the wearable shoulder sleeve, and two ends of the elastic bridle are respectively connected to the glove and the wearable shoulder sleeve.
6. A materials handling aid as claimed in claim 5, wherein: the elastic bridle two ends are respectively connected with the upper end of the glove and the front end of the wearable shoulder sleeve, the first rigid part is connected with the lower end of the glove, and the second rigid part is connected with the rear end of the wearable shoulder sleeve.
7. A materials handling aid as claimed in claim 5, wherein: the elastic bridle is connected to the glove through a magic tape.
8. A materials handling aid as claimed in claim 5, wherein: the middle part of the glove is provided with an elastic groove.
9. The utility model provides a utensil is assisted in wearing formula transport which characterized in that: comprising 2 materials handling aids according to any of claims 4-7, wherein a chest strap is arranged between the 2 wearable shoulder straps, the two sides of the chest strap are respectively connected with the 2 wearable shoulder straps, the chest strap is used for embracing the chest of the human body, and the chest strap is provided with a chest buckle and a length adjusting device.
10. A wearable carrying aid according to claim 9, wherein: the chest belt is equipped with the waist band below, is equipped with X-shaped band between waist band and the chest band, and X-shaped band upper end is connected in chest band rear end, and X-shaped band lower extreme is connected in waist band rear end, and the waist band is used for embracing human waist, and the waist band is equipped with waist buckle and length adjustment device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381641.1A CN111604887B (en) | 2020-05-08 | 2020-05-08 | Binary locking assembly and material carrying auxiliary tool and wearable carrying auxiliary tool |
| AU2021102228A AU2021102228A4 (en) | 2020-05-08 | 2021-04-28 | Dual-state locking assembly, material handling aid, and wearable handling aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381641.1A CN111604887B (en) | 2020-05-08 | 2020-05-08 | Binary locking assembly and material carrying auxiliary tool and wearable carrying auxiliary tool |
Publications (2)
| Publication Number | Publication Date |
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| CN111604887A true CN111604887A (en) | 2020-09-01 |
| CN111604887B CN111604887B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010381641.1A Active CN111604887B (en) | 2020-05-08 | 2020-05-08 | Binary locking assembly and material carrying auxiliary tool and wearable carrying auxiliary tool |
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| Country | Link |
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| CN (1) | CN111604887B (en) |
| AU (1) | AU2021102228A4 (en) |
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| CN112356013A (en) * | 2020-11-05 | 2021-02-12 | 安徽大学绿色产业创新研究院 | Passive and energy-storable elbow joint assistance exoskeleton |
| CN113478510A (en) * | 2021-06-30 | 2021-10-08 | 江西机电职业技术学院 | Mechanical gripper |
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| US20100016773A1 (en) * | 2008-07-21 | 2010-01-21 | Anatomical Concepts, Inc. | Coordinated Cuff Displacement in an Orthotic Device |
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| CN112356013A (en) * | 2020-11-05 | 2021-02-12 | 安徽大学绿色产业创新研究院 | Passive and energy-storable elbow joint assistance exoskeleton |
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| CN113478510A (en) * | 2021-06-30 | 2021-10-08 | 江西机电职业技术学院 | Mechanical gripper |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2021102228A4 (en) | 2021-06-24 |
| CN111604887B (en) | 2024-04-12 |
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