CN111790114A - Finger ladder capable of being restored in parallel - Google Patents
Finger ladder capable of being restored in parallel Download PDFInfo
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- CN111790114A CN111790114A CN202010595471.7A CN202010595471A CN111790114A CN 111790114 A CN111790114 A CN 111790114A CN 202010595471 A CN202010595471 A CN 202010595471A CN 111790114 A CN111790114 A CN 111790114A
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- horizontal
- bolt
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
- A63B23/16—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles for hands or fingers
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Ladders (AREA)
Abstract
The invention discloses a parallel homing finger ladder, wherein the right end of a horizontal support plate and the lower end of a vertical support plate are hinged into a whole, and the angle between the right end of the horizontal support plate and the lower end of the vertical support plate is adjustable; a vertical moving groove is formed at the upper part of the vertical supporting plate; the ladder unit comprises a plurality of vertical ladder plates and a plurality of horizontal ladder plates; the lower end of the leftmost vertical step plate is hinged between the left ends of the front and rear side walls of the left avoidance groove; a vertical limiting plate in a shape like a Chinese character 'ji' with an opening facing to the left is vertically and movably arranged in the vertical moving groove; the right end of the rightmost vertical step plate is hinged in the opening of the vertical limiting plate; vertical step board and horizontal step board are adjacent and both articulated the setting about and.
Description
Technical Field
The invention relates to the technical field of rehabilitation instruments, in particular to a finger ladder capable of being restored in parallel.
Background
The finger ladder is used for improving finger joint home range, and the flexibility, the harmony of training finger initiative motion, it includes the baffle of a pair of perpendicular setting, is provided with a plurality of steps between a pair of baffle, and the shape of current finger ladder is fixed, can't dismantle and change, and subsequent transportation and accomodating of not being convenient for like this.
Disclosure of Invention
The invention aims to solve the technical problem that the existing finger ladder is inconvenient to transport and store, and provides a parallel homing finger ladder.
The technical scheme for solving the technical problems is as follows: a parallel homing finger ladder comprises a horizontal support plate, a vertical support plate and a ladder unit; a left avoidance groove is formed in the right part of the upper end face of the horizontal supporting plate and penetrates through the left avoidance groove rightwards; a right avoidance groove is formed in the lower portion of the left end face of the vertical supporting plate and penetrates downwards; the right end of the horizontal supporting plate and the lower end of the vertical supporting plate are hinged into a whole, and the angle between the right end of the horizontal supporting plate and the lower end of the vertical supporting plate is adjustable; a vertical moving groove is formed at the upper part of the vertical supporting plate; the ladder unit comprises a plurality of vertical ladder plates and a plurality of horizontal ladder plates; the lower end of the leftmost vertical step plate is hinged between the left ends of the front and rear side walls of the left avoidance groove and can be kept in a vertical state; a vertical limiting plate in a shape like a Chinese character 'ji' with an opening facing to the left is vertically and movably arranged in the vertical moving groove; the right end of the rightmost vertical step plate is hinged in the opening of the vertical limiting plate and can be kept in a horizontal state; the vertical step plate and the horizontal step plate are adjacent to each other left and right and are hinged with each other; the adjacent vertical step plate and the horizontal step plate can be kept in a mutually perpendicular state.
Preferably, the horizontal support plate and the vertical support plate are hinged into a whole through a main connecting bolt; a square column-shaped horizontal connecting block is formed in the center of the right end face of the horizontal supporting plate; the right end of the horizontal connecting block is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left width and the right width of the horizontal connecting block; a pair of vertical connecting blocks which are symmetrically arranged front and back are formed on the lower end surface of the vertical supporting plate; the vertical connecting block is a square column plate; the lower end of the vertical connecting block is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left width and the right width of the vertical connecting block; a cylindrical central rotating column is formed on the head of the main connecting bolt, and a screw rod is formed on the end face, away from the main connecting bolt, of the head of the central rotating column; the central rotary column of the main connecting bolt coaxially penetrates through the vertical connecting block and the horizontal connecting block on the front side, and the screw rod is screwed on the vertical connecting block on the rear side.
Preferably, the head of the main connecting bolt is cylindrical and a damping layer is provided on the surface thereof.
Preferably, a plurality of cylindrical vertical guide rods which are uniformly distributed in the front and back are formed between the upper side wall and the lower side wall of the vertical moving groove; the vertical limiting plate is vertically sleeved on the vertical guide rod; the front end face of the vertical limiting plate is screwed with a vertical limiting bolt; and a sliding avoidance hole for the vertical limiting bolt to pass through and vertically slide is formed in the front side wall of the vertical moving groove.
Preferably, the head of the vertical limit bolt is cylindrical and a damping layer is arranged on the surface of the head.
Preferably, the vertical step plate is provided with a step vertical connecting plate in a square column shape at the center of the upper and lower end surfaces thereof; one end of the vertical stepped plate of the ladder is respectively provided with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the vertical connecting plate; cylindrical step connecting columns which are coaxially arranged are respectively formed on the front end face and the rear end face of the step vertical connecting plate; a pair of step connecting plates which are symmetrically arranged front and back are respectively formed on the left end surface and the right end surface of the horizontal step plate; one end of the step connecting plate, which is far away from the horizontal step plate, is formed with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the step connecting plate; a right central column is formed between the pair of step connecting plates on the right side of the rightmost horizontal step plate; the right central column penetrates through the vertical limiting plate in the front-back direction and is pivoted on the side wall of the corresponding side of the opening of the vertical limiting plate; a step limiting bolt is screwed on the front end surface of the right central column at the front side, and the head of the step limiting bolt is positioned at the front side of the vertical limiting plate; an avoidance groove for the vertical movement of the stepped limiting bolt of the right central column is formed on the front side wall and the rear side wall of the vertical moving groove; a step connecting column of the vertical step plate at the leftmost end penetrates in the front-back direction and is rotatably arranged on the side wall of the corresponding side of the left avoidance groove; the ladder connecting columns of the other vertical ladder plates coaxially penetrate back and forth and are rotatably arranged on the ladder connecting plates on the corresponding sides; a pair of stepped connecting columns at the lower end of the leftmost vertical stepped plate penetrate through the left and right direction and are pivoted on the front and rear side walls of the left avoidance groove; the front end surface of the ladder connecting column at the front side of the lower end of the leftmost vertical ladder plate is in threaded connection with a ladder limiting bolt, and the ladder limiting bolt is arranged at the front side of the horizontal ladder plate; the front end faces of the ladder connecting columns of the other vertical ladder plates are in threaded connection with ladder limiting bolts, and the front sides of the ladder connecting plates on the front sides of the horizontal ladder plates of the ladder limiting bolts are in threaded connection with the front ends of the ladder connecting columns of the other vertical ladder plates.
The invention has the beneficial effects that: simple structure, horizontal support board and vertical support board can be in simultaneously on the same horizontal plane and the vertical step board and the horizontal step board level at place are accomodate and are kept away the groove on the right side and keep away the inslot on the left side, make things convenient for follow-up transportation and accomodate.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic structural view of a cross section of the present invention;
fig. 3 is a schematic structural view showing a cross section of the connection of the vertical step plate 41 and the horizontal step plate 42 of the present invention.
In the figure, 10, horizontal support plates; 100. a left dodging groove; 11. a horizontal connecting block; 20. a main connecting bolt; 30. a vertical support plate; 300. a right avoidance slot; 301. an avoidance groove; 302. a vertical moving groove; 303. a vertical guide rod; 304. sliding avoidance holes; 31. a vertical connecting block; 32. a vertical limiting plate; 40. a stair unit; 41. a vertical step plate; 411. a stepped vertical connecting plate; 42. a horizontal step plate; 421. a step connecting plate; 43. a stepped connecting column; 45. ladder limit bolt.
Detailed Description
As shown in fig. 1 to 3, a finger step capable of being restored in parallel is characterized in that: comprises a horizontal support plate 10, a vertical support plate 30 and a step unit 40; a left avoiding groove 100 is formed in the right part of the upper end face of the horizontal support plate 10, and the left avoiding groove 100 penetrates rightwards; a right avoidance groove 300 is formed at the lower part of the left end surface of the vertical support plate 30, and the right avoidance groove 300 is arranged in a downward penetrating manner; the right end of the horizontal support plate 10 and the lower end of the vertical support plate 30 are hinged into a whole and the angle between the two is adjustable; a vertical moving groove 302 is formed at the upper portion of the vertical support plate 30; the step unit 40 includes a plurality of vertical step plates 41 and a plurality of horizontal step plates 42; the lower end of the leftmost vertical step plate 41 is hinged between the left ends of the front and rear side walls of the left avoidance groove 100 and can be kept in a vertical state; the vertical limiting plate 32 which is in a shape like a Chinese character 'ji' and is provided with an opening facing to the left is vertically arranged in the vertical moving groove 302 in a moving manner; the right end of the rightmost vertical step plate 32 is hinged in the opening of the vertical limit plate 32 and can be kept in a horizontal state; the vertical step plate 30 and the horizontal step plate 10 are adjacent to each other left and right and are hinged with each other; the adjacent vertical step plates 30 and horizontal step plates 10 may be maintained in a perpendicular state to each other.
As shown in fig. 1 and 2, the horizontal support plate 10 and the vertical support plate 30 are hinged into a whole through a main connecting bolt 20; a square column-shaped horizontal connecting block 11 is formed in the center of the right end face of the horizontal supporting plate 10; the right end of the horizontal connecting block 11 is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left width and the right width of the horizontal connecting block 11; a pair of vertical connecting blocks 31 which are symmetrically arranged front and back are formed on the lower end surface of the vertical supporting plate 30; the vertical connecting block 31 is a square column plate; the lower end of the vertical connecting block 31 is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the vertical connecting block 31; a cylindrical central rotating column is formed on the head of the main connecting bolt 20, and a screw rod is formed on the end face, away from the main connecting bolt 20, of the head of the central rotating column; the central rotary column of the main connecting bolt 20 coaxially passes through the front vertical connecting block 31 and the horizontal connecting block 11 and the screw is screwed to the rear vertical connecting block 31.
The head of the main coupling bolt 20 is cylindrical and provided with a damping layer on the surface thereof.
As shown in fig. 1 and 2, a plurality of cylindrical vertical guide rods 303 are formed between the upper and lower side walls of the vertical moving groove 302 and are uniformly distributed back and forth; the vertical limiting plate 32 is vertically sleeved on the vertical guide rod 303; a vertical limiting bolt 34 is screwed on the front end face of the vertical limiting plate 32; a slide avoidance hole 304 through which the bolt of the vertical limit bolt 34 passes back and forth and slides vertically is formed on a front side wall of the vertical moving groove 302.
The head of the vertical limit bolt 34 is cylindrical and a damping layer is provided on the surface thereof.
As shown in fig. 1 to 3, a square column-shaped stepped vertical connecting plate 411 is formed at the center of each of the upper and lower end faces of the vertical stepped plate 41; one end of the vertical stepped plate 411, which is far away from the vertical stepped plate 41, of the stepped vertical connecting plate 411 is respectively formed with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the vertical connecting plate 411; cylindrical stepped connecting columns 43 which are coaxially arranged are formed on the front end face and the rear end face of the stepped vertical connecting plate 411 respectively; a pair of step connecting plates 421 symmetrically arranged front and back are respectively formed on the left and right end surfaces of the horizontal step plate 42; one end of the step connecting plate 421, which is far away from the horizontal step plate 42, is formed with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left-right width of the step connecting plate 421; a right central column is formed between the pair of step connecting plates 421 on the right side of the rightmost horizontal step plate 42; the right central column penetrates through the front and back direction and is pivoted on the side wall of the corresponding side of the opening of the vertical limit plate 32; a step limiting bolt 45 is screwed on the front end surface of the right central column at the front side, and the head of the step limiting bolt 45 is positioned at the front side of the vertical limiting plate 32; an avoidance groove 301 for the vertical movement of the stepped limit bolt 45 of the right central column is formed on the front side wall and the rear side wall of the vertical moving groove 302; the step connecting column 43 of the leftmost vertical step plate 41 passes through in the front-rear direction and is rotatably arranged on the side wall of the corresponding side of the left avoidance groove 100; the step connecting columns 43 of the rest vertical step plates 41 coaxially penetrate back and forth and are rotatably arranged on the step connecting plates 421 on the corresponding sides; a pair of stepped connecting columns 43 at the lower end of the leftmost vertical stepped plate 41 penetrate through in the front-rear direction and are pivoted on the front and rear side walls of the left avoidance groove 100; a step limit bolt 45 is screwed on the front end surface of the step connecting column 43 at the front side of the lower end of the leftmost vertical step plate 41, and the step limit bolt 45 is arranged at the front side of the horizontal step plate 10; the front end surfaces of the ladder connecting posts 43 of the other vertical ladder plates 41 are screwed with ladder limit bolts 45, and the front sides of the ladder connecting plates 421 at the front sides of the horizontal ladder plates 10 of the ladder limit bolts 45 are screwed with the ladder limit bolts 45.
The working principle of the parallel homing finger ladder;
as shown in fig. 1 and fig. 2, the horizontal support plate 10 and the vertical stepped plate 30 are vertically arranged, the vertical stepped plate 41 is in a vertical state, the horizontal stepped plate 42 is in a horizontal state, the head of the stepped limit bolt 45 abuts against the front end surface of the horizontal support plate 10 or the front end surface of the stepped connection plate 421 on the front side or the front end surface of the vertical limit plate 32, and the vertical limit bolt 34 is in a tightened state;
when needing to accomodate, unscrew vertical spacing bolt 34, unscrew all ladder spacing bolts 45 and main connecting bolt 20, then vertical support plate 30 clockwise rotation ninety degrees, until vertical support plate 30 and horizontal ladder board 10 are in same horizontal plane, horizontal support plate 10 and vertical ladder board 30 all are in same horizontal plane and are located left dodge groove 100 and right dodge the groove 300 at this moment, then screw up vertical spacing bolt 34 and main connecting bolt 20, can keep above-mentioned state like this, convenient follow-up accomodating and transportation.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.
Claims (6)
1. A parallel homing finger ladder, comprising: comprises a horizontal support plate (10), a vertical support plate (30) and a step unit (40); a left avoiding groove (100) is formed in the right part of the upper end face of the horizontal support plate (10), and the left avoiding groove (100) penetrates rightwards; a right avoidance groove (300) is formed in the lower portion of the left end face of the vertical support plate (30), and the right avoidance groove (300) penetrates downwards; the right end of the horizontal support plate (10) and the lower end of the vertical support plate (30) are hinged into a whole, and the angle between the two is adjustable; a vertical moving groove (302) is formed at the upper part of the vertical support plate (30); the step unit (40) comprises a plurality of vertical step plates (41) and a plurality of horizontal step plates (42); the lower end of the leftmost vertical step plate (41) is hinged between the left ends of the front and rear side walls of the left avoidance groove (100) and can be kept in a vertical state; a vertical limiting plate (32) which is shaped like a Chinese character 'ji' and is provided with an opening facing to the left is vertically arranged in the vertical moving groove (302) in a moving way; the right end of the rightmost vertical step plate (32) is hinged in the opening of the vertical limit plate (32) and can be kept in a horizontal state; the vertical step plate (30) and the horizontal step plate (10) are adjacent to each other left and right and are hinged with each other; the adjacent vertical step plate (30) and the horizontal step plate (10) can be kept in a mutually vertical state.
2. A parallel homing finger ladder of claim 1, wherein: the horizontal support plate (10) and the vertical support plate (30) are hinged into a whole through a main connecting bolt (20); a square column-shaped horizontal connecting block (11) is formed in the center of the right end face of the horizontal supporting plate (10); the right end of the horizontal connecting block (11) is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the horizontal connecting block (11); a pair of vertical connecting blocks (31) which are symmetrically arranged front and back are formed on the lower end surface of the vertical supporting plate (30); the vertical connecting block (31) is a square column plate; the lower end of the vertical connecting block (31) is formed into a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left and right width of the vertical connecting block (31); a cylindrical central rotating column is formed on the head of the main connecting bolt (20), and a screw rod is formed on the end face, away from the main connecting bolt (20), of the head of the central rotating column; the central rotary column of the main connecting bolt (20) coaxially passes through the front vertical connecting block (31) and the horizontal connecting block (11) and is screwed on the rear vertical connecting block (31).
3. A parallel homing finger ladder of claim 2, wherein: the head of the main connecting bolt (20) is cylindrical and a damping layer is provided on the surface thereof.
4. A parallel homing finger ladder of claim 1, wherein: a plurality of cylindrical vertical guide rods (303) which are uniformly distributed in the front-back direction are formed between the upper side wall and the lower side wall of the vertical moving groove (302); the vertical limiting plate (32) is vertically sleeved on the vertical guide rod (303); a vertical limiting bolt (34) is screwed on the front end surface of the vertical limiting plate (32); and a sliding avoidance hole (304) for the bolt of the vertical limiting bolt (34) to pass through and slide vertically is formed on the front side wall of the vertical moving groove (302).
5. A parallel homing finger ladder of claim 4, wherein: the head of the vertical limit bolt (34) is cylindrical and a damping layer is arranged on the surface of the head.
6. A parallel homing finger ladder of claim 1, wherein: the centers of the upper end surface and the lower end surface of the vertical stepped plate (41) are respectively provided with a square columnar stepped vertical connecting plate (411); one end of the vertical stepped plate (411) far away from the vertical stepped plate (41) is respectively formed with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left-right width of the vertical connecting plate (411); cylindrical stepped connecting columns (43) which are coaxially arranged are respectively formed on the front end face and the rear end face of the stepped vertical connecting plate (411); a pair of step connecting plates (421) which are symmetrically arranged front and back are respectively formed on the left end surface and the right end surface of the horizontal step plate (42); one end of the step connecting plate (421), which is far away from the horizontal step plate (42), is formed with a semi-cylindrical surface, and the diameter of the semi-cylindrical surface is equal to the left-right width of the step connecting plate (421); a right central column is formed between a pair of step connecting plates (421) on the right side of the rightmost horizontal step plate (42); the right central column penetrates through the front and back direction and is pivoted on the side wall of the corresponding side of the opening of the vertical limit plate (32); a step limiting bolt (45) is screwed on the front end surface of the right central column at the front side, and the head of the step limiting bolt (45) is positioned at the front side of the vertical limiting plate (32); an avoidance groove (301) for the step limiting bolt (45) of the right central column to vertically move is formed in the front side wall and the rear side wall of the vertical moving groove (302); a step connecting column (43) of the leftmost vertical step plate (41) penetrates in the front-back direction and is rotatably arranged on the side wall of the corresponding side of the left avoidance groove (100); the ladder connecting columns (43) of the rest vertical ladder plates (41) coaxially penetrate back and forth and are rotatably arranged on the ladder connecting plates (421) on the corresponding sides; a pair of ladder connecting columns (43) at the lower end of the leftmost vertical ladder plate (41) penetrate through the front and back direction and are pivoted on the front and back side walls of the left avoidance groove (100); a step limit bolt (45) is screwed on the front end surface of a step connecting column (43) at the front side of the lower end of the leftmost vertical step plate (41), and the step limit bolt (45) is arranged at the front side of the horizontal step plate (10); the front end surfaces of the ladder connecting columns (43) of the rest vertical ladder plates (41) are screwed with ladder limiting bolts (45), and the ladder limiting bolts (45) are arranged on the front sides of the ladder connecting plates (421) on the front sides of the horizontal ladder plates (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595471.7A CN111790114A (en) | 2020-06-28 | 2020-06-28 | Finger ladder capable of being restored in parallel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010595471.7A CN111790114A (en) | 2020-06-28 | 2020-06-28 | Finger ladder capable of being restored in parallel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111790114A true CN111790114A (en) | 2020-10-20 |
Family
ID=72803895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010595471.7A Withdrawn CN111790114A (en) | 2020-06-28 | 2020-06-28 | Finger ladder capable of being restored in parallel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111790114A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704830A (en) * | 2012-06-01 | 2012-10-03 | 柳州职业技术学院 | Multifunctional ladder |
| US8852058B1 (en) * | 2011-07-14 | 2014-10-07 | Paul J. Hamberis | Interactive finger ladder |
| CN207679964U (en) * | 2017-12-29 | 2018-08-03 | 上海交通大学医学院附属新华医院 | A kind of trapezoidal finger of Mammary cancer climbs wall function exercising apparatus |
| CN208057037U (en) * | 2018-01-24 | 2018-11-06 | 上海统帅建筑装潢有限公司 | Folding ladder for decoration |
| CN210186323U (en) * | 2019-03-28 | 2020-03-27 | 王素贞 | Obstetrical nursing is with multi-functional medical rehabilitation training staircase |
| CN111249688A (en) * | 2020-02-19 | 2020-06-09 | 东莞市护康健康管理有限公司 | Span-adjustable medical finger training ladder |
| CN210714439U (en) * | 2019-06-27 | 2020-06-09 | 苏州市冯氏智能科技有限公司 | Quick folding and multi-functional cat ladder of accomodating |
-
2020
- 2020-06-28 CN CN202010595471.7A patent/CN111790114A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8852058B1 (en) * | 2011-07-14 | 2014-10-07 | Paul J. Hamberis | Interactive finger ladder |
| CN102704830A (en) * | 2012-06-01 | 2012-10-03 | 柳州职业技术学院 | Multifunctional ladder |
| CN207679964U (en) * | 2017-12-29 | 2018-08-03 | 上海交通大学医学院附属新华医院 | A kind of trapezoidal finger of Mammary cancer climbs wall function exercising apparatus |
| CN208057037U (en) * | 2018-01-24 | 2018-11-06 | 上海统帅建筑装潢有限公司 | Folding ladder for decoration |
| CN210186323U (en) * | 2019-03-28 | 2020-03-27 | 王素贞 | Obstetrical nursing is with multi-functional medical rehabilitation training staircase |
| CN210714439U (en) * | 2019-06-27 | 2020-06-09 | 苏州市冯氏智能科技有限公司 | Quick folding and multi-functional cat ladder of accomodating |
| CN111249688A (en) * | 2020-02-19 | 2020-06-09 | 东莞市护康健康管理有限公司 | Span-adjustable medical finger training ladder |
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Application publication date: 20201020 |