CN216876879U - Electric wheelchair anti-backward tilting device - Google Patents
Electric wheelchair anti-backward tilting device Download PDFInfo
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- CN216876879U CN216876879U CN202122900370.9U CN202122900370U CN216876879U CN 216876879 U CN216876879 U CN 216876879U CN 202122900370 U CN202122900370 U CN 202122900370U CN 216876879 U CN216876879 U CN 216876879U
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Abstract
The utility model discloses an electric wheelchair anti-backward-tilting device which comprises a supporting rod and a protection mechanism, wherein the protection mechanism is arranged on the back surface of the supporting rod, the protection mechanism comprises a first connecting rod and a second connecting rod, the first connecting rod is arranged at the bottom of the supporting rod, the second connecting rod comprises a second connecting rod, a first fixing rod is fixedly inserted into one side of the bottom of the supporting rod, the first fixing rod is rotatably inserted into one end of the first connecting rod, a second fixing rod is fixedly inserted into one side of the top of the supporting rod, the second fixing rod is rotatably inserted into one end of the second connecting rod, and a movable rod is arranged at the bottom of the second connecting rod. According to the utility model, the top end of the connecting rod II is rotated around the fixed rod II by moving the connecting rod II, the movable rod connected with the bottom end of the connecting rod II rotates around the rotating shaft, the movable rod drives the connecting rod I to rotate around the fixed rod I, and the supporting rod, the connecting rod I, the connecting rod II and the movable rod form a triangular shape, so that the back of the electric wheelchair is stably supported, and the backward tilting is prevented.
Description
Technical Field
The utility model relates to the field of electric wheelchairs, in particular to an anti-back-tipping device of an electric wheelchair.
Background
The electric wheelchair is formed by superposing a high-performance energy power driving device, an intelligent operating device, a battery and the like on the basis of the traditional manual wheelchair and is formed by modification and upgrading.
The electric wheelchair is generally moved on the ground by contacting four rollers with the ground, a user generally sits on a cushion and leans against a backrest of the wheelchair to control the movement of the electric wheelchair, and during the movement process, when the wheelchair is rebounded and bumped or collided, the electric wheelchair is easily tilted backwards or even topples over due to the backward tilting of the body.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electric wheelchair anti-backward tilting device to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: an electric wheelchair anti-backward-tilting device comprises a supporting rod and a protection mechanism, wherein the protection mechanism is arranged on the back of the supporting rod;
the protection mechanism comprises a first connecting rod and a support mechanism, the first connecting rod is arranged at the bottom of the support rod, and the support mechanism is arranged between the first connecting rod and the support rod;
the supporting mechanism comprises a second connecting rod, a first fixed rod is fixedly connected to one side of the bottom of the supporting rod in an inserting mode, the first fixed rod is connected with one end of the first connecting rod in a rotating and inserting mode, a second fixed rod is fixedly connected to one side of the top of the supporting rod in an inserting mode, the second fixed rod is connected with one end of the second connecting rod in a rotating and inserting mode, a movable rod is arranged at the bottom of the second connecting rod, and a third fixed rod is fixedly connected to one side of the movable rod;
and the bottom of the second connecting rod is provided with a connecting mechanism, and the top of the movable rod is provided with a fixing mechanism.
Preferably, the connecting mechanism comprises a mounting groove, a rotating shaft and a connecting block, the mounting groove is formed in the bottom of the second connecting rod, and the rotating shaft is fixedly inserted and connected with the two sides of the inner wall of the mounting groove.
Preferably, the connecting block is fixedly connected with the top end of the movable rod, and one end of the connecting block is rotatably inserted and connected with the rotating shaft.
Preferably, fixed establishment is including solid fixed ring, spread groove, loose ring and fixed block, gu fixed ring is connected with the fixed interlude in the top of movable rod, the spread groove sets up in solid fixed ring's top.
Preferably, the movable ring is connected with the two connecting rods in a sliding and penetrating manner, the fixed block is fixedly connected with the bottom end of the movable ring, and the outer wall of the fixed block is in threaded connection with the inner wall of the connecting groove.
Preferably, a round rod is fixedly connected between the two connecting rods, and a roller is fixedly mounted at the bottom end of the movable rod.
The utility model has the technical effects and advantages that:
(1) according to the utility model, by utilizing the arrangement mode that the support rod and the first connecting rod are matched with the second connecting rod and the movable rod, the top end of the second connecting rod rotates around the second fixed rod by moving the second connecting rod, the movable rod connected with the bottom end of the second connecting rod rotates around the rotating shaft, the movable rod drives the first connecting rod to rotate around the first fixed rod, and when the second connecting rod and the movable rod are positioned on the same straight line, the support rod, the first connecting rod, the second connecting rod and the movable rod form a triangular shape to stably support the back of the electric wheelchair and prevent backward tilting;
(2) according to the utility model, by utilizing the arrangement mode that the movable ring and the fixed ring are matched, the movable ring is slid along the second connecting rod and is sleeved at the joint of the movable rod and the second connecting rod, the movable ring is rotated, so that the fixed block at the bottom end of the movable ring is in threaded penetrating connection with the connecting groove on the fixed ring, the rotating position of the movable rod and the second connecting rod is limited and fixed, and the movable rod and the second connecting rod can be conveniently accommodated and unfolded.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic side view of the movable rod of the present invention.
FIG. 3 is a schematic view of the back structure of the support rod of the present invention.
FIG. 4 is a schematic side sectional view of the movable ring of the present invention.
FIG. 5 is an enlarged view of the structure at A of FIG. 4 according to the present invention.
In the figure: 1. a support bar; 2. a protection mechanism; 21. a first connecting rod; 22. a support mechanism; 221. a second connecting rod; 222. fixing a rod I; 223. a second fixing rod; 224. a movable rod; 225. fixing a rod III; 3. a connecting mechanism; 31. mounting grooves; 32. a rotating shaft; 33. connecting blocks; 4. a fixing mechanism; 41. a fixing ring; 42. connecting grooves; 43. a movable ring; 44. a fixed block; 5. a round bar; 6. and a roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a device for preventing the backward tilting of an electric wheelchair, which comprises a supporting rod 1 and a protection mechanism 2, wherein the supporting rod 1 is positioned at the back of the electric wheelchair and is a component of the electric wheelchair, the protection mechanism 2 is arranged at the back of the supporting rod 1, and the protection mechanism 2 supports the back of the electric wheelchair and prevents the electric wheelchair from tilting backward;
the protection mechanism 2 comprises a first connecting rod 21 and a supporting mechanism 22, the first connecting rod 21 is arranged at the bottom of the supporting rod 1, the first connecting rod 21 is used for connecting the movable rod 224, the supporting mechanism 22 is arranged between the first connecting rod 21 and the supporting rod 1, and the supporting mechanism 22 is used for supporting the back of the electric wheelchair;
the supporting mechanism 22 comprises a second connecting rod 221, the second connecting rod 221 is used for connecting the top end of a movable rod 224, a first fixed rod 222 is fixedly and alternately connected with one side of the bottom of the supporting rod 1, the first fixed rod 222 is rotatably and alternately connected with one end of the first connecting rod 21, one end of the first connecting rod 21 rotates around the axis of the first fixed rod 222, a second fixed rod 223 is fixedly and alternately connected with the other side of the top of the supporting rod 1, the second fixed rod 223 is rotatably and alternately connected with one end of the second connecting rod 221, one end of the second connecting rod 221 rotates around the axis of the second fixed rod 223, a movable rod 224 is arranged at the bottom of the second connecting rod 221, the top of the movable rod 224 is rotatably connected with the bottom of the second connecting rod 221, a third fixed rod 225 is fixedly connected with one side of the movable rod 224, the bottom of the movable rod 224 is rotatably connected with the other end of the first connecting rod 21 through the third fixed rod 225, and the supporting rod 1, the first connecting rod 21, the second connecting rod 221 and the movable rod 224 form a triangular shape;
the bottom of the second connecting rod 221 is provided with a connecting mechanism 3, the connecting mechanism 3 is used for connecting the movable rod 224 and the second connecting rod 221, the top of the movable rod 224 is provided with a fixing mechanism 4, and the fixing mechanism 4 is used for limiting and fixing the joint of the movable rod 224 and the second connecting rod 221;
the connecting mechanism 3 comprises a mounting groove 31, a rotating shaft 32 and a connecting block 33, the mounting groove 31 is arranged at the bottom of the second connecting rod 221, the mounting groove 31 is located in the middle of the bottom end of the second connecting rod 221, the rotating shaft 32 is fixedly inserted and connected with two sides of the inner wall of the mounting groove 31, the connecting block 33 is fixedly connected with the top end of the movable rod 224, one end of the connecting block 33 is arranged in an inner cavity of the mounting groove 31, one end of the connecting block 33 is rotatably inserted and connected with the rotating shaft 32, and one end of the movable rod 224 is rotatably connected with the bottom of the second connecting rod 221 through the connecting block 33 and the rotating shaft 32;
the fixing mechanism 4 comprises a fixing ring 41, a connecting groove 42, a movable ring 43 and a fixing block 44, the fixing ring 41 is fixedly inserted and connected with the top of the movable rod 224, the fixing ring 41 is arranged below the movable ring 43, the movable ring 43 is limited and installed, the connecting groove 42 is arranged at the top end of the fixed ring 41, the inner wall of the connecting groove 42 is provided with an internal thread, the movable ring 43 is in sliding penetrating connection with the second connecting rod 221, the movable ring 43 is in sliding sleeve connection with the connecting position of the movable rod 224 and the second connecting rod 221, the fixed block 44 is fixedly connected with the bottom end of the movable ring 43, the outer wall of the fixed block 44 is provided with an external thread, the outer wall of the fixed block 44 is in threaded connection with the inner wall of the connecting groove 42 along with the movement of the movable ring 43, the fixed block 44 at the bottom end of the movable ring 43 is in threaded penetrating connection with the connecting groove 42 on the fixed ring 41 by rotating the movable ring, and the rotating part of the movable rod 224 and the connecting rod II 221 is limited and fixed;
fixedly connected with round bar 5 between two connecting rods 221, round bar 5 is used for connecting two connecting rods 221, drives two connecting rods 221 and moves together, and the bottom fixed mounting of movable rod 224 has gyro wheel 6, and gyro wheel 6 and ground contact are passed through to the bottom of movable rod 224, the removal of the electronic wheelchair of being convenient for.
The working principle of the utility model is as follows: through removing connecting rod two 221, make its top rotate around dead lever two 223, the movable rod 224 that connecting rod two 221 bottom is connected rotates around axis of rotation 32, the movable rod 224 drives connecting rod one 21 and rotates around dead lever one 222, when connecting rod two 221 and movable rod 224 are in same straight line, bracing piece 1, connecting rod one 21 and connecting rod two 221 and movable rod 224 constitute triangle-shaped, to the back stable support of electronic wheelchair, simultaneously through sliding movable ring 43 along connecting rod two 221, the slip cup joints the junction at movable rod 224 and connecting rod two 221, rotate movable ring 43, make the fixed block 44 of its bottom and the solid fixed ring 41 on the spread groove 42 screw thread interlude be connected, it is spacing fixed to the rotation department of movable rod 224 and connecting rod two 221.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (6)
1. An electric wheelchair anti-backward-tilting device comprises a supporting rod (1) and a protection mechanism (2), and is characterized in that the protection mechanism (2) is arranged on the back of the supporting rod (1);
the protection mechanism (2) comprises a first connecting rod (21) and a supporting mechanism (22), the first connecting rod (21) is arranged at the bottom of the supporting rod (1), and the supporting mechanism (22) is arranged between the first connecting rod (21) and the supporting rod (1);
the supporting mechanism (22) comprises a second connecting rod (221), a first fixed rod (222) is fixedly and alternately connected to one side of the bottom of the supporting rod (1), the first fixed rod (222) is rotatably and alternately connected with one end of the first connecting rod (21), a second fixed rod (223) is fixedly and alternately connected to the other side of the top of the supporting rod (1), the second fixed rod (223) is rotatably and alternately connected with one end of the second connecting rod (221), a movable rod (224) is arranged at the bottom of the second connecting rod (221), and a third fixed rod (225) is fixedly connected to one side of the movable rod (224);
the bottom of the second connecting rod (221) is provided with a connecting mechanism (3), and the top of the movable rod (224) is provided with a fixing mechanism (4).
2. The electric wheelchair anti-backward-tilting device as claimed in claim 1, wherein the connecting mechanism (3) comprises a mounting groove (31), a rotating shaft (32) and a connecting block (33), the mounting groove (31) is arranged at the bottom of the second connecting rod (221), and the rotating shaft (32) is fixedly inserted and connected with two sides of the inner wall of the mounting groove (31).
3. The electric wheelchair anti-backward tilting device as claimed in claim 2, wherein the connecting block (33) is fixedly connected with the top end of the movable rod (224), and one end of the connecting block (33) is rotatably inserted and connected with the rotating shaft (32).
4. The electric wheelchair anti-backward-tilting device according to claim 1, wherein the fixing mechanism (4) comprises a fixing ring (41), a connecting groove (42), a movable ring (43) and a fixing block (44), the fixing ring (41) is fixedly inserted and connected with the top of the movable rod (224), and the connecting groove (42) is arranged at the top end of the fixing ring (41).
5. The electric wheelchair anti-backward tilting device as claimed in claim 4, wherein the movable ring (43) is slidably inserted into the second connecting rod (221), the fixed block (44) is fixedly connected with the bottom end of the movable ring (43), and the outer wall of the fixed block (44) is in threaded connection with the inner wall of the connecting groove (42).
6. The electric wheelchair anti-backward tilting device as claimed in claim 1, wherein a round bar (5) is fixedly connected between the two connecting bars (221), and a roller (6) is fixedly mounted at the bottom end of the movable bar (224).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122900370.9U CN216876879U (en) | 2021-11-24 | 2021-11-24 | Electric wheelchair anti-backward tilting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122900370.9U CN216876879U (en) | 2021-11-24 | 2021-11-24 | Electric wheelchair anti-backward tilting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216876879U true CN216876879U (en) | 2022-07-05 |
Family
ID=82202193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122900370.9U Active CN216876879U (en) | 2021-11-24 | 2021-11-24 | Electric wheelchair anti-backward tilting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216876879U (en) |
-
2021
- 2021-11-24 CN CN202122900370.9U patent/CN216876879U/en active Active
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