CN109163051B - Shock absorber for wheelchair - Google Patents
Shock absorber for wheelchair Download PDFInfo
- Publication number
- CN109163051B CN109163051B CN201811099756.0A CN201811099756A CN109163051B CN 109163051 B CN109163051 B CN 109163051B CN 201811099756 A CN201811099756 A CN 201811099756A CN 109163051 B CN109163051 B CN 109163051B
- Authority
- CN
- China
- Prior art keywords
- column
- end cover
- wheelchair
- lower connecting
- connecting column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000035939 shock Effects 0.000 title claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 11
- 238000007790 scraping Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010068 moulding (rubber) Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
Abstract
The invention discloses a shock absorber for a wheelchair, which comprises a mounting tube and an end cover, wherein the bottom of the end cover is connected with the top of the mounting tube, a spring and a scraping blade are further arranged in the end cover, the top end of the spring is connected with the top end of the end cover, the inner end of the scraping blade is fixedly connected with the spring, and the outer end of the scraping blade is abutted against the inner side surface of the end cover; a fixed ring, an elastic column and a lower connecting column are sequentially arranged in the mounting pipe from top to bottom, and a connecting section for connecting with a rolling part of the wheelchair is arranged at the bottom of the lower connecting column; the upper connecting column comprises a column head and a column body which is arranged below the column head and fixedly connected with the column head, the column head is arranged above the fixing ring, the bottom end of the column body sequentially penetrates through the fixing ring and the elastic column, the bottom end of the column body is connected with the top end of the lower connecting column, and a distance is arranged between the bottom end of the spring and the column head. When the wheelchair shakes, the shock absorber for the wheelchair can help a person pushing the wheelchair to judge the situation of the wheelchair shaking, and a road section suitable for pushing the wheelchair is selected.
Description
Technical Field
The invention relates to the field of shock absorption, in particular to a shock absorber for a wheelchair.
Background
The road in city or country, the road surface condition is comparatively complicated, for example in the park, and some places are flat cement ground, and some places are laid slabstone, fragment of brick or cobble, and still are the blind road of unevenness, and when the wheelchair is pushed on these road surfaces, the people who pushes away the wheelchair just need eyes to observe the road surface, and what road surfaces are more steady sometimes is difficult to distinguish, and especially to some vibrations that the amplitude is less, the frequency is higher, is difficult to be perceived by the people who pushes away the wheelchair, but people who take the wheelchair can feel uncomfortable. Also, some patients who have just undergone surgery, have unhealed wounds that are not suitable for being placed in a high frequency vibrating environment.
Disclosure of Invention
The invention aims to solve the technical problems that: a shock absorber for a wheelchair is provided which facilitates distinguishing shock conditions.
The invention solves the technical problems as follows:
the shock absorber for the wheelchair comprises an installation tube and an end cover, wherein the end cover is in a cylindrical shape with a closed top end, the bottom of the end cover is connected with the top of the installation tube, a space in the end cover is communicated with a space in the installation tube into a whole, a spring and a scraping blade are further arranged in the end cover, the top end of the spring is connected with the top end of the end cover, the inner end of the scraping blade is fixedly connected with the spring, and the outer end of the scraping blade is abutted against the inner side surface of the end cover;
a fixed ring, an elastic column and a lower connecting column are sequentially arranged in the mounting pipe from top to bottom, the bottom surface of the elastic column is in butt joint with the top surface of the lower connecting column, a gap is arranged between the elastic column and the mounting pipe, and a connecting section for connecting with a rolling part of a wheelchair is arranged at the bottom of the lower connecting column;
the novel column comprises a fixing ring, and is characterized by further comprising an upper connecting column, wherein the upper connecting column comprises a column head, a column shaft which is arranged below the column head and fixedly connected with the column head, the column head is arranged above the fixing ring, the bottom end of the column shaft sequentially penetrates through the fixing ring and the elastic column, the bottom end of the column shaft is connected with the top end of the lower connecting column, and a distance is arranged between the bottom end of the spring and the column head.
As a further improvement of the technical scheme, the device further comprises a sliding bearing, wherein the sliding bearing is sleeved on the lower connecting column and fixedly connected with the lower connecting column, and the outer side face of the sliding bearing is in sliding connection with the inner side face of the mounting tube.
As the further improvement of above-mentioned technical scheme, lower spliced pole includes little cooperation section, big cooperation section, spacing section, the linkage segment that from the top down set gradually, slide bearing overlaps little cooperation section is last, slide bearing's bottom with big cooperation section butt, big cooperation section with be equipped with the space between the installation pipe, spacing section is located the below of installation pipe, the bottom surface of linkage segment is equipped with the screw hole.
As a further improvement of the technical scheme, the lower part of the large matching section is sleeved with a rubber gasket, and the rubber gasket is arranged between the mounting pipe and the limiting section.
As a further improvement of the technical scheme, the fixing ring is made of rubber, and the mounting tube is made of metal.
As a further improvement of the technical scheme, the elastic column is made of rubber.
As a further improvement of the technical scheme, the scraping blade is made of nylon.
As a further improvement of the technical scheme, the device further comprises a data converter, a terminal display device and an acoustic wave sensor arranged in the end cover, wherein the data converter is respectively and electrically connected with the acoustic wave sensor and the terminal display device, the data converter is used for processing acoustic wave signals acquired by the acoustic wave sensor and transmitting the processed signals to the terminal display device, and the terminal display device is used for displaying acoustic wave diagrams.
The beneficial effects of the invention are as follows: when the wheelchair vibrates, the scraping blade can repeatedly scrape on the inner side surface of the end cover to make a sound, the larger the amplitude is, the longer the duration of single sound is, the higher the vibration frequency is, and the higher the frequency of sound is. Therefore, a person pushing the wheelchair can judge the condition of the wheelchair in case of earthquake, and then select a road section suitable for pushing the wheelchair.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic illustration of the present invention;
fig. 2 is a schematic view of the lower connecting column of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to a more optimal connection structure that may be formed by adding or subtracting connection aids depending on the particular implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1 to 2, this is an embodiment of the present invention, in particular:
the shock absorber for the wheelchair comprises a mounting tube 1 and an end cover 2, wherein the end cover 2 is in a cylindrical shape with a closed top end, the bottom of the end cover 2 is connected with the top of the mounting tube 1, a space in the end cover 2 is communicated with a space in the mounting tube 1 into a whole, a spring 7 and a scraping blade 71 are further arranged in the end cover 2, the top end of the spring 7 is connected with the top end of the end cover 2, the inner end of the scraping blade 71 is fixedly connected with the spring 7, and the outer end of the scraping blade 71 is abutted against the inner side surface of the end cover 2;
a fixed ring 6, an elastic column 8 and a lower connecting column are sequentially arranged in the mounting tube 1 from top to bottom, the bottom surface of the elastic column 8 is in butt joint with the top surface of the lower connecting column, a gap is arranged between the elastic column 8 and the mounting tube 1, and a connecting section 44 used for being connected with a rolling part of a wheelchair is arranged at the bottom of the lower connecting column;
the spring fixing device is characterized by further comprising an upper connecting column, wherein the upper connecting column comprises a column head 31 and a column shaft 32 which is arranged below the column head 31 and fixedly connected with the column head 31, the column head 31 is arranged above the fixing ring 6, the bottom end of the column shaft 32 sequentially penetrates through the fixing ring 6 and the elastic column 8, the bottom end of the column shaft 32 is connected with the top end of the lower connecting column, and a distance is arranged between the bottom end of the spring 7 and the column head 31.
The working principle of the invention is as follows: when the wheelchair passes over a rugged road surface, the bottom end of the lower connecting column is used for being connected with the rolling part of the wheelchair, so that the lower connecting column firstly receives vibration, and then the lower connecting column drives the upper connecting column connected with the lower connecting column to vibrate up and down, and meanwhile, the lower connecting column repeatedly extrudes the elastic column 8 to consume vibration energy; when the vibration amplitude is so large that the vibration stroke of the stud 31 is larger than the distance between the bottom end of the spring 7 and the stud 31, the spring 7 is repeatedly compressed and restored under the impact of the stud 31, and then the wiper blade 71 repeatedly scrapes on the inner side surface of the end cap 2, rattles, the larger the amplitude, the longer the duration of a single rattle, the higher the vibration frequency, and the higher the frequency of rattle. Therefore, a person pushing the wheelchair can judge the condition of the wheelchair in a shocking way, so that a road section suitable for pushing the wheelchair is selected.
Further, the device also comprises a sliding bearing 5, wherein the sliding bearing 5 is sleeved on the lower connecting column and fixedly connected with the lower connecting column, and the outer side surface of the sliding bearing 5 is in sliding connection with the inner side surface of the mounting tube 1. The structure can reduce the friction between the lower connecting column and the mounting pipe 1, prevent the abrasion between the lower connecting column and the mounting pipe 1, reduce the noise generated by the friction between the lower connecting column and the mounting pipe 1, and interfere the vibration condition of the shock absorber for the wheelchair. In addition, the slide bearing 5 also has a function of preventing the axis of the lower link from being displaced, so that the movement of the lower link is maintained straight.
Further, the spliced pole includes little cooperation section 41, big cooperation section 42, spacing section 43, the linkage segment 44 that from the top down set gradually, slide bearing 5 cover is in on the little cooperation section 41, slide bearing 5's bottom with big cooperation section 42 butt, big cooperation section 42 with be equipped with the space between the installation pipe 1, spacing section 43 locates the below of installation pipe 1, the bottom surface of linkage segment 44 is equipped with the screw hole.
Further, a rubber gasket 61 is sleeved on the lower portion of the large fitting section 42, and the rubber gasket 61 is arranged between the mounting tube 1 and the limiting section 43. The rubber gasket 61 can cushion the collision between the stopper 43 and the mounting tube 1. And the sound insulation effect of the rubber is good. The rubber gasket 61 prevents noise from being generated by collision between the limiting section 43 and the mounting tube 1, and interferes with the shock absorber for wheelchair to prompt a vibration situation.
Further, the fixing ring 6 is made of rubber, and the mounting tube 1 is made of metal. The rubber molding is easy, the rubber and the metal can be firmly bonded, and the collision between the column head 31 and the rubber fixing ring 6 is not easy to generate noise when the wheelchair vibrates.
Further, the elastic column 8 is made of rubber. The rubber has good high-frequency vibration isolation performance, good sound insulation effect, light weight and low price. In general, spring dampers of equal load capacity are much more expensive than rubber dampers. Because wheelchairs often need to be handled, light weight is an important factor in ease of use.
Further, the wiper blade 71 is made of nylon. Nylon has certain internal damping, and when being vibrated by friction, the generated sound is not as sharp as metal, and uncomfortable and harshness noise is not easy to generate when the nylon is used for manufacturing the scraping blade.
Further, the device also comprises a data converter, a terminal display device and an acoustic wave sensor arranged in the end cover, wherein the data converter is respectively and electrically connected with the acoustic wave sensor and the terminal display device, the data converter is used for processing acoustic wave signals acquired by the acoustic wave sensor and transmitting the processed signals to the terminal display device, and the terminal display device is used for displaying acoustic wave diagrams. Therefore, the road condition passed by the wheelchair can be quantitatively and clearly displayed in the sound wave diagram, so that a wheelchair user can more easily select a pushing path. In addition, when people who take the wheelchair go out alone, other people can grasp the condition through the terminal display remote control, and when the sound wave diagram appears unexpected undulant, can presume the condition such as wheelchair upset, other people can in time make the response.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (1)
1. Shock absorber for wheelchairs, comprising a mounting tube (1), characterized in that:
the novel scraper is characterized by further comprising an end cover (2), wherein the end cover (2) is in a cylindrical shape with a closed top end, the bottom of the end cover (2) is connected with the top of the installation tube (1), a space in the end cover (2) is communicated with a space in the installation tube (1) into a whole, a spring (7) and a scraper blade (71) are further arranged in the end cover (2), the top end of the spring (7) is connected with the top end of the end cover (2), the inner end of the scraper blade (71) is fixedly connected with the spring (7), and the outer end of the scraper blade (71) is abutted against the inner side surface of the end cover (2);
a fixed ring (6), an elastic column (8) and a lower connecting column are sequentially arranged in the mounting tube (1) from top to bottom, the bottom surface of the elastic column (8) is in butt joint with the top surface of the lower connecting column, a gap is arranged between the elastic column (8) and the mounting tube (1), and a connecting section (44) used for being connected with a rolling part of a wheelchair is arranged at the bottom of the lower connecting column;
the novel anti-theft device is characterized by further comprising an upper connecting column, wherein the upper connecting column comprises a column head (31) and a column shaft (32) which is arranged below the column head (31) and fixedly connected with the column head (31), the column head (31) is arranged above the fixed ring (6), the bottom end of the column shaft (32) sequentially penetrates through the fixed ring (6) and the elastic column (8), the bottom end of the column shaft (32) is connected with the top end of the lower connecting column, and a space is reserved between the bottom end of the spring (7) and the column head (31);
the sliding bearing (5) is sleeved on the lower connecting column and fixedly connected with the lower connecting column, and the outer side surface of the sliding bearing (5) is in sliding connection with the inner side surface of the mounting tube (1);
the lower connecting column comprises a small matching section (41), a large matching section (42), a limiting section (43) and a connecting section (44) which are sequentially arranged from top to bottom, the small matching section (41) is sleeved with the sliding bearing (5), the bottom end of the sliding bearing (5) is abutted to the large matching section (42), a gap is formed between the large matching section (42) and the mounting pipe (1), the limiting section (43) is arranged below the mounting pipe (1), and a threaded hole is formed in the bottom surface of the connecting section (44);
the lower part of the large matching section (42) is sleeved with a rubber gasket (61), and the rubber gasket (61) is arranged between the mounting pipe (1) and the limiting section (43);
the device comprises an end cover (2), a data converter, a terminal display device and an acoustic wave sensor, wherein the acoustic wave sensor is arranged in the end cover (2), the data converter is respectively and electrically connected with the acoustic wave sensor and the terminal display device, the data converter is used for processing acoustic wave signals acquired by the acoustic wave sensor and transmitting the processed signals to the terminal display device, and the terminal display device is used for displaying acoustic wave diagrams;
the fixing ring (6) is made of rubber, and the mounting tube (1) is made of metal; the elastic column (8) is made of rubber;
the scraping blade (71) is made of nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099756.0A CN109163051B (en) | 2018-09-20 | 2018-09-20 | Shock absorber for wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099756.0A CN109163051B (en) | 2018-09-20 | 2018-09-20 | Shock absorber for wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163051A CN109163051A (en) | 2019-01-08 |
| CN109163051B true CN109163051B (en) | 2024-02-13 |
Family
ID=64879826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811099756.0A Active CN109163051B (en) | 2018-09-20 | 2018-09-20 | Shock absorber for wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109163051B (en) |
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