CN208525263U - Adjustable back-rest means for chair for electric wheelchair - Google Patents
Adjustable back-rest means for chair for electric wheelchair Download PDFInfo
- Publication number
- CN208525263U CN208525263U CN201721200681.1U CN201721200681U CN208525263U CN 208525263 U CN208525263 U CN 208525263U CN 201721200681 U CN201721200681 U CN 201721200681U CN 208525263 U CN208525263 U CN 208525263U
- Authority
- CN
- China
- Prior art keywords
- jack
- deploying
- backrest
- electric wheelchair
- draw
- 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.)
- Expired - Fee Related
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a kind of adjustable back-rest means for chair for electric wheelchair, it includes backrest and recliner, and the backrest is rotatably connected on the base support of electric wheelchair；The recliner includes jack, draw-off mechanism and the position retaining plate matched with jack, the jack is arranged on base support, shift slot is provided on the position retaining plate, the position retaining plate is connected to by back, the draw-off mechanism is connected with jack, is detached from the shift slot on a part insertion position retaining plate will pass through movement draw-off mechanism control jack or from shift slot.Its gear is easy to adjust, and suitable for the user of different demands, and it is easy to carry to receive poststack.
Description
Technical field
The utility model relates to a kind of adjustable back-rest means for chair for electric wheelchair, belong to wheelchair technical field.
Background technique
Currently, the backrest of existing electric wheelchair is fixed mostly, but different users obtain optimum reelability quality
The tilt angle of backrest be it is different, existing wheelchair cannot make part user obtain comfortable sitting posture, if backrest is unfolded
It is not fixed and just comes into operation afterwards, security protection can not be provided to user.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and is provided a kind of for electric wheelchair
Adjustable back-rest means for chair, its gear is easy to adjust, and suitable for the user of different demands, and it is easy to carry to receive poststack.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of adjustable for electric wheelchair
Back-rest means for chair, it includes:
Backrest, the backrest are rotatably connected on the base support of electric wheelchair；
Recliner, the recliner include jack, draw-off mechanism and match with jack
Position retaining plate, the jack is arranged on base support, and shift slot, the position retaining plate connection are provided on the position retaining plate
Back is being leaned on, the draw-off mechanism is connected with jack, will pass through a part of movement draw-off mechanism control jack
It is embedded in the shift slot on position retaining plate or is detached from from shift slot.
A kind of specific structure of jack is further provided, the jack includes:
Cylinder, the cylinder are connected on base support；
Deploying and retracting axis, the deploying and retracting axis are axial movably through cylinder, the head of the deploying and retracting axis and drawing machine along cylinder
Structure is connected；
Reset spring is provided with block on the deploying and retracting axis, and the reset spring is sleeved on the outside of the deploying and retracting axis, institute
The end of one end and the cylinder where folding and unfolding shaft head for stating reset spring abuts against, the other end of the reset spring and described
Block abuts, and drives the reset of deploying and retracting axis will pass through the rebound by compression reseting spring and makes the tail portion insertion gear of deploying and retracting axis
Slot.
Further, at least two shift slots are provided on the position retaining plate, and shift slot is arranged in jack to lean on
Back
Center of rotation is on the swinging track line of oscillation center.
A kind of specific structure of draw-off mechanism is further provided, the draw-off mechanism includes traction fiber and connector, institute
The head that deploying and retracting axis is arranged in connector is stated, the traction fiber is connected with connector.
Further, protective case is provided on the connecting portion of the traction fiber and connector.
Further for backrest is preferably adjusted, there are two the jack settings, one of jack setting
In the left side of base support, another jack is arranged in the right side of base support, position retaining plate and is connected with jack
There are two draw-off mechanism is also respectively set, the left side of backrest is arranged in one of position retaining plate, and the setting of another position retaining plate is being leaned on
The right side of back.
Further for traction fiber is facilitated, to the synchronous adjustment of two jacks, the traction fiber of two draw-off mechanisms is connected
Together.
Using above-mentioned technical proposal, the utility model has the following beneficial effects:
1, traction fiber is pulled, the deploying and retracting axis connecting by connector with traction fiber takes off by traction force, and then from shift slot
From, while reset spring is in compressive state by compression, when deploying and retracting axis turns to another shift slot, discharges traction fiber, resets
The rebound of spring drives the reset of deploying and retracting axis and then the tail portion of deploying and retracting axis is made to be embedded in shift slot, and then completes the gear tune to backrest
Section, it is simple and convenient；
2, part user, which opens, forgets to check whether backrest is fixed appropriate, just direct seat after folded electric wheelchair
Onto electric wheelchair, if wheelchair backrest is not fixed appropriate, some potential safety problems there is, the utility model is opened
Afterwards, if deploying and retracting axis is in the non-shift slot region of position retaining plate, reset spring is in confined state, and user takes wheelchair
Afterwards, backrest stress, deploying and retracting axis and position retaining plate along deploying and retracting axis swinging track it is opposite slide, when deploying and retracting axis slides to shift slot by
In the screen resilience and then insertion shift slot of compressed reset spring, to complete the fixation to backrest, the utility model can
Protective action is played to user, avoids making user danger occur because backrest is unlocked appropriate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustable back-rest means for chair for electric wheelchair of the utility model；
Fig. 2 is the structural schematic diagram of the recliner of the utility model；
Fig. 3 is another structural schematic diagram of the recliner of the utility model；
Fig. 4 is the structural schematic diagram of the position retaining plate of the utility model.
Specific embodiment
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model.
As shown in figures 1-4, a kind of adjustable back-rest means for chair for electric wheelchair, it includes:
Backrest 1, the backrest 1 are rotatably connected on the base support 2 of electric wheelchair；
Recliner, the recliner include jack, draw-off mechanism and match with jack
Position retaining plate 3, the jack is arranged on base support 2, and shift slot 31, the gear are provided on the position retaining plate 3
Plate 3 is connected on backrest 1, and the draw-off mechanism is connected with jack, will pass through movement draw-off mechanism control jack
A part insertion position retaining plate 3 on shift slot 31 in or from shift slot 31 be detached from.
As shown in Figure 2,3, the jack includes:
Cylinder 41, the cylinder 41 are connected on base support 2；
Deploying and retracting axis 42, the deploying and retracting axis 42 are axial movably through cylinder 41, the head of the deploying and retracting axis 42 along cylinder 41
Portion is connected with draw-off mechanism；
Reset spring 43 is provided with block 44 on the deploying and retracting axis 42, and the reset spring 43 is sleeved on the deploying and retracting axis
The end in 42 outside, the cylinder 41 where 42 head of one end and deploying and retracting axis of the reset spring 43 abuts against, the reset
The other end of spring 43 and the block 44 abut, will pass through answering by the rebound drive deploying and retracting axis 42 of compression reseting spring 43
Position simultaneously makes the tail portion of deploying and retracting axis 42 be embedded in shift slot 31.
As shown in figure 4, being provided at least two shift slots 31 on the position retaining plate 3, and shift slot 31 is arranged in folding and unfolding
Mechanism is using the center of rotation of backrest 1 as on the swinging track line of oscillation center.
As shown in Figure 2,3, the draw-off mechanism includes traction fiber 51 and connector 52, and the connector 52 is arranged in folding and unfolding
The head of axis 42, the traction fiber 51 are connected with connector 52.Specifically, the connector 52 is by being screwed in deploying and retracting axis
42 head.
As shown in Figure 2,3, protective case 53 is provided on the connecting portion of the traction fiber 51 and connector 52.
As shown in Figure 1, there are two the jack settings, one of jack in order to preferably adjust backrest 1
The left side of base support 2 is set, and the right side of base support 2, position retaining plate 3 and and jack is arranged in another jack
There are two connected draw-off mechanism is also respectively set, the left side of backrest 1 is arranged in one of position retaining plate 3, another position retaining plate 3
The right side of backrest 1 is set.
As shown in Figure 1, in order to facilitate synchronous adjustment of the traction fiber 51 to two jacks, the traction of two draw-off mechanisms
Silk 51 links together.
The working principle of the utility model is as follows:
When adjusting the gear of backrest 1, traction fiber 51, the deploying and retracting axis 42 connecting by connector 52 with traction fiber 51 are pulled
It is detached from by traction force, and then from shift slot 31, while reset spring 43 is in compressive state by compression, when deploying and retracting axis 42 rotates
When to another shift slot 31, traction fiber 51 is discharged, the rebound of reset spring 43 drives the reset of deploying and retracting axis 42 and then makes deploying and retracting axis
42 tail portion is embedded in shift slot 31, and then completes to adjust the gear of backrest 1, simple and convenient；After part user opens folding
Electric wheelchair after forget to check whether backrest 1 is fixed appropriate, just directly sit on electric wheelchair, if wheelchair backrest not by
Fixation is appropriate, there is some potential safety problems, the utility model is provided with multiple shift slots 31, and the utility model is opened
Afterwards, if deploying and retracting axis 42 is in the non-shift slot region of position retaining plate 3, reset spring 43 is in confined state, and user takes
After wheelchair, 1 stress of backrest, deploying and retracting axis 42 and position retaining plate 3 slide relatively along the swinging track of deploying and retracting axis 42, when deploying and retracting axis 42 slides to
It is embedded in shift slot 31 in turn when shift slot 31 by the screen resilience of compressed reset spring 43, to complete to backrest 1
Fixed, the utility model can play protective action to user, avoid making user endanger because backrest 1 is unlocked appropriate
Danger.
Particular embodiments described above, to the utility model solve the technical issues of, technical scheme and beneficial effects into
It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to
In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvement done
Deng should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of adjustable back-rest means for chair for electric wheelchair, which is characterized in that it includes:
Backrest (1), the backrest (1) are rotatably connected on the base support (2) of electric wheelchair；
Recliner, the recliner include jack, draw-off mechanism and the gear matched with jack
Position plate (3), the jack is arranged on base support (2), is provided with shift slot (31) on the position retaining plate (3), described
Position retaining plate (3) is connected on backrest (1), and the draw-off mechanism is connected with jack, will pass through movement draw-off mechanism control
It is detached from shift slot (31) in a part insertion position retaining plate (3) of jack or from shift slot (31).
2. the adjustable back-rest means for chair according to claim 1 for electric wheelchair, which is characterized in that the jack
Include:
Cylinder (41), the cylinder (41) are connected on base support (2)；
Deploying and retracting axis (42), the deploying and retracting axis (42) are axial movably through cylinder (41), the deploying and retracting axis along cylinder (41)
(42) head is connected with draw-off mechanism；
Reset spring (43) is provided with block (44) on the deploying and retracting axis (42), and the reset spring (43) is sleeved on the receipts
The outside of axis (42) is put, one end of the reset spring (43) and the end of the cylinder (41) where deploying and retracting axis (42) head offset
It connects, the other end and the block (44) of the reset spring (43) abut, will pass through returning by compression reseting spring (43)
Bearing band moves the reset of deploying and retracting axis (42) and the tail portion of deploying and retracting axis (42) is made to be embedded in shift slot (31).
3. the adjustable back-rest means for chair according to claim 1 for electric wheelchair, it is characterised in that: the position retaining plate
(3) it is provided at least two shift slots (31), and shift slot (31) is arranged in jack with the center of rotation of backrest (1)
Centered on swinging track line on.
4. the adjustable back-rest means for chair according to claim 1 for electric wheelchair, it is characterised in that: the draw-off mechanism
Including traction fiber (51) and connector (52), the connector (52) is arranged in the head of deploying and retracting axis (42), the traction fiber
(51) it is connected with connector (52).
5. the adjustable back-rest means for chair according to claim 4 for electric wheelchair, it is characterised in that: the traction fiber
(51) and on the connecting portion of connector (52) it is provided with protective case (53).
6. the adjustable back-rest means for chair according to claim 4 for electric wheelchair, it is characterised in that: the jack
There are two settings, and in the left side of base support (2), another jack is arranged in pedestal branch for one of jack setting
There are two the right side of frame (2), position retaining plate (3) and the draw-off mechanism being connected with jack are also respectively set, one of gear
Plate (3) setting is arranged in the left side of backrest (1), another position retaining plate (3) on the right side of backrest (1).
7. the adjustable back-rest means for chair according to claim 6 for electric wheelchair, it is characterised in that: two draw-off mechanisms
Traction fiber (51) link together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200681.1U CN208525263U (en) | 2017-09-19 | 2017-09-19 | Adjustable back-rest means for chair for electric wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200681.1U CN208525263U (en) | 2017-09-19 | 2017-09-19 | Adjustable back-rest means for chair for electric wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208525263U true CN208525263U (en) | 2019-02-22 |
Family
ID=65398426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721200681.1U Expired - Fee Related CN208525263U (en) | 2017-09-19 | 2017-09-19 | Adjustable back-rest means for chair for electric wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208525263U (en) |
-
2017
- 2017-09-19 CN CN201721200681.1U patent/CN208525263U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190222 Termination date: 20210919 |