CN213605399U - Install dismantlement formula backrest fast - Google Patents
Install dismantlement formula backrest fast Download PDFInfo
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- CN213605399U CN213605399U CN202022680961.5U CN202022680961U CN213605399U CN 213605399 U CN213605399 U CN 213605399U CN 202022680961 U CN202022680961 U CN 202022680961U CN 213605399 U CN213605399 U CN 213605399U
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Abstract
The utility model discloses a quickly-mounted and dismounted seat backrest, which comprises a backrest and a seat basin, wherein the backrest is connected with the seat basin through a quick-dismounting component, and two sides of the backrest are connected with side plates of the seat basin through positioning components; the quick-release pin assembly comprises a quick-release pin and a fixing piece, the fixing piece is fixedly connected with the chair basin, a clamping hole is formed in the fixing piece, and the quick-release pin penetrates through the backrest plate hole and is clamped into the clamping hole in the fixing piece. The utility model discloses the realization launches quick installation and the dismantlement of backrest does not need the instrument, accomplishes the quick dismantlement and the installation of back, and simple structure improves the maintainability of seat, is particularly useful for launching the backrest.
Description
Technical Field
The utility model relates to a seat technical field, concretely relates to install dismantlement formula backrest fast.
Background
The design of the existing ejection seat backrest is that a soft backrest cushion is fixed on a hard backrest plate to form a supporting part of the waist and the back of a human body; a common method of securing a backrest to a seat is to fasten the seat pan side panels to the rigid backrest panel by fasteners such as screws.
This type of connection is not convenient in practice for reasons including: two sides of the chair basin side plate are respectively connected by 2 screws without positioning design; sufficient operating space is reserved on two sides of the seat basin when the screws are disassembled and assembled, and the disassembly and the assembly and the maintenance in the cabin cannot be realized because a plurality of aircraft cabins do not have the condition; the screw is a fastening piece with small volume, and is easy to fall off in the manual dismounting process, so that potential safety hazards exist; multiple disassembly and assembly of screw fasteners can also cause life problems such as wear of screw threads.
The reasons all indicate that the connection mode of the screw fastener adopted at present has a great deal of inconvenience, lead to the installation and the dismouting inefficiency of the back of present ejection seat, are unfavorable for improving the maintainability of seat.
Disclosure of Invention
The to-be-solved technical problem of the utility model is, to the above-mentioned defect that prior art exists, provide a quick installation dismantlement formula back, realize launching the quick installation and the dismantlement of back, do not need the instrument, accomplish the quick dismantlement and the installation of back, simple structure improves the maintainability of seat, is particularly useful for launching back.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a quickly-mounted and dismounted seat backrest comprises a backrest and a seat basin, wherein the backrest is connected with the seat basin through a quick-dismounting assembly, and two sides of the backrest are connected with side plates of the seat basin through positioning assemblies; the quick-release pin assembly comprises a quick-release pin and a fixing piece, the fixing piece is fixedly connected with the upper beam of the chair basin, a clamping hole is formed in the fixing piece, and the quick-release pin penetrates through the hole of the backrest plate and is clamped into the clamping hole in the fixing piece.
According to the technical scheme, the number of the quick-release pin assemblies is 2, and the quick-release pin assemblies are respectively arranged on two sides of the backrest.
According to the technical scheme, the quick-release pin assembly further comprises a wing piece and a connecting rope, the wing piece is fixedly arranged on the backrest, one end of the connecting rope is connected with the wing piece, and the other end of the connecting rope is connected with the quick-release pin.
According to the technical scheme, the wing pieces are fixedly arranged on the backrest through the flat round head screws and the self-locking nuts.
According to the technical scheme, one end of the connecting rope penetrates through the through hole in the wing piece to be connected with one rope end small ball, the other end of the connecting rope penetrates through the through hole in the quick-release pin to be connected with the other rope end small ball, and the diameter of the rope end small ball is larger than that of the through hole.
According to the technical scheme, the connecting rope is a steel wire rope.
According to the technical scheme, the quick-release pin comprises a pin, a cylinder body and a locking ball, one end of the pin is sleeved in the cylinder body, a groove hole is formed in the cylinder body along the circumferential direction, the locking ball is arranged in the groove hole, a groove is formed in the pin along the circumferential direction, the groove corresponds to the groove hole, the pin moves downwards along the cylinder body to enable the groove and the groove hole to be the same in position in the radial direction, the locking ball falls into the groove, and the locking ball is sunk into the cylinder body; the pin moves again to make the groove and the groove hole dislocated, the locking ball moves out of the groove, the locking ball protrudes outwards on the groove hole and forms locking with the clamping hole on the fixing piece.
According to the technical scheme, the spring is connected between the pin and the cylinder body, and the groove of the pin and the slotted hole of the cylinder body are kept in a staggered state through the spring force.
According to the technical scheme, the positioning assembly comprises the guide shaft and the guide support, the guide shaft and the guide support are fixedly arranged on the backrest and the chair basin respectively, the positioning groove is formed in the guide support, and the outer end of the guide shaft is arranged in the positioning groove.
According to the technical scheme, the positioning groove is a semi-open arc-shaped groove.
The utility model discloses following beneficial effect has:
the utility model discloses the realization launches quick installation and the dismantlement of backrest does not need the instrument, accomplishes the quick dismantlement and the installation of back, and simple structure improves the maintainability of seat, is particularly useful for launching the backrest.
Drawings
FIG. 1 is a schematic view of a backrest connected to a seat pan via a quick release pin set according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of a backrest connected to a seat pan via a positioning assembly according to a first embodiment of the present invention;
FIG. 4 is a partial K view of FIG. 3;
FIG. 5 is a schematic view of the connection between the backrest and the seat pan according to the second embodiment of the present invention;
FIG. 6 is a schematic structural view of a quick release pin in a locked state according to an embodiment of the present invention;
fig. 7 is a schematic structural view of the quick release pin in the unlocked state according to the embodiment of the present invention;
in the figure, 1-backrest, 2-chair basin upper beam, 3-chair basin side plate, 4-quick-release pin assembly, 5-quick-release pin, 6-rope end ball, 7-connecting rope, 8-wing, 9-oblate head screw, 10-self-locking nut, 11-fixing piece, 12-guide shaft, 13-guide support, 14-rivet, 15-countersunk head rivet, 16-pin, 17-cylinder, 18-locking ball and 19-groove.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 7, the embodiment of the seat back of the present invention includes a back 1 and a seat pan, wherein the back 1 is connected to the seat pan through a quick release assembly, and two sides of the back 1 are connected to a side plate 3 of the seat pan through a positioning assembly; the quick-release pin assembly 4 comprises a quick-release pin 5 and a fixing piece 11, the fixing piece 11 is fixedly connected with the upper beam 2 of the chair basin, a clamping hole is formed in the fixing piece 11, and the quick-release pin 5 penetrates through the hole of the backrest plate and is clamped into the clamping hole in the fixing piece 11.
Further, the number of the quick release pin assemblies 4 is 2, and the quick release pin assemblies are respectively arranged on two sides of the backrest 1.
Furthermore, the quick release pin assembly 4 further comprises a wing piece 8 and a connecting rope 7, the wing piece 8 is fixedly arranged on the backrest 1, one end of the connecting rope 7 is connected with the wing piece 8, and the other end of the connecting rope 7 is connected with the quick release pin 5.
Further, the wing 8 is fixed to the backrest 1 by means of a round head screw 9 and a self-locking nut 10.
Furthermore, one end of the connecting rope 7 penetrates through a through hole in the wing piece 8 to be connected with one rope end small ball 6, the other end of the connecting rope 7 penetrates through a through hole in the quick-release pin 5 to be connected with the other rope end small ball 6, and the diameter of the rope end small ball 6 is larger than that of the through hole.
Further, the connecting rope 7 is a steel wire rope.
Further, as shown in fig. 6 and 7, the quick release pin 5 comprises a pin 16, a cylinder 17 and a locking ball 18, one end of the pin 16 is sleeved in the cylinder 17, the cylinder 17 is provided with a groove hole along the circumferential direction, the locking ball 18 is arranged in the groove hole, the pin 16 is provided with a groove 19 along the circumferential direction, the groove 19 corresponds to the groove hole, the pin 16 moves downwards along the cylinder 17 to enable the radial position of the groove 19 to be the same as that of the groove hole, the locking ball 18 falls into the groove 19, and the locking ball 18 sinks into the cylinder 17; the pin 16 is moved again to displace the recess 19 from the slot and the locking ball 18 is moved out of the recess 19, the locking ball 18 projecting outwardly over the slot to form a lock with the catch hole in the anchor plate 11.
Furthermore, a spring is connected between the pin 16 and the cylinder 17, and the groove 19 of the pin 16 and the groove hole of the cylinder 17 are kept in a dislocation state by the spring force.
Furthermore, the locating component comprises a guide shaft 12 and a guide support 13, the guide shaft 12 and the guide support 13 are respectively and fixedly arranged on the backrest 1 and the chair basin, a locating slot is arranged on the guide support 13, and the outer end of the guide shaft 12 is arranged in the locating slot.
Further, the guide shaft 12 is fixedly connected with the backrest 1 through a rivet, and the guide support 13 is fixedly connected with the basin side plate 3 through a countersunk rivet 15.
Furthermore, the constant head tank is half opening arc wall.
Furthermore, the backrest 1 is connected with the chair basin through a quick-release assembly in two ways, in the first embodiment, the upper part of the backrest 1 is connected with the upper beam of the chair basin through the quick-release assembly, and two sides of the lower part of the backrest 1 are connected with the side plates 3 of the chair basin through positioning assemblies.
In the second embodiment, two sides of the lower part of the backrest 1 are connected with the chair basin side plate 3 through the quick-release assembly, and two sides of the upper part of the backrest 1 are connected with the chair basin side plate 3 through the positioning assembly.
The utility model discloses a theory of operation: in the first embodiment shown in fig. 1-4, the upper part of the backrest 1 is connected with the upper beam 2 of the seat pan through two quick-release pin assemblies 4, and the lower part of the backrest 1 is connected with the side plate 3 of the seat pan in a positioning way through two groups of guide shafts 12 and guide supports 13. The quick-release pin assembly 4 consists of a pin 5, two small balls 6, a connecting rope 7 and a wing piece 8, one end of the quick-release pin assembly is fixedly connected with the backrest through a flat round head screw 9 and a self-locking nut 10, and the other end of the quick-release pin assembly penetrates through a hole of the backrest plate and a fixing plate 11 to be connected with the upper beam 2 of the chair basin. The guide shaft 12 is fixedly connected with the backrest 1 through a rivet 14, the guide support 13 is fixedly connected with the basin side plate 3 through a countersunk rivet 15, and the guide shaft 12 is connected with the guide support 13 in a sliding manner.
In the installation of the embodiment, the guide shaft 12 of the backrest 1 is firstly installed in position along the guide support 13, and the lower part of the backrest is firstly positioned. And then the pins 5 of the two pairs of quick-release pin assemblies 4 on the upper part of the backrest 1 penetrate through the mounting holes of the backrest 1 and the positioning holes of the fixing plate 11 of the upper beam 2 of the chair basin to fix the upper part of the backrest, thus finishing the quick mounting of the backrest 1. When the backrest is disassembled, firstly, the pins 5 of the two pairs of quick disassembling pins 4 on the upper part of the backrest 1 are pulled out by hands, the upper part of the backrest 1 is disconnected with the upper beam 2 of the chair basin, and then the guide shaft 12 on the lower part of the backrest 1 is taken out along the guide support 13 of the side plate 3 of the chair basin, thus completing the quick disassembly of the backrest 1.
In a second embodiment shown in fig. 5, the quick release pin assemblies 4 are mounted on both sides of the lower portion of the backrest 1 and are connected to the pelvis side plate 3 by fixing plates 11, and the guide shafts 12 are mounted on the upper portion of the backrest 1 and are connected to the pelvis side plate 3 by guide brackets 13. In the installation of the embodiment, the guide shaft 12 is firstly installed in place along the guide support 13, the upper part of the backrest is firstly positioned, and then the pin of the quick-release pin assembly 4 penetrates through the basin side plate 3 and the fixing plate 11, so that the quick installation of the backrest 1 is completed; when the backrest is disassembled, the pin of the quick-release pin assembly 4 is taken out, and then the guide shaft 12 of the backrest 1 is taken out along the guide support 13 of the basin side plate 3, so that the quick disassembly of the backrest 1 is completed.
Two installation supports with guiding functions are installed at the lower parts of the inner sides of the side plates on the two sides of the chair basin of the ejection chair, two guiding shafts are installed at the corresponding parts of the lower parts on the two sides of the backrest, the guiding shafts can be installed in place along the guiding supports, and the lower part of the backrest can be positioned. Two pairs of quick-release pin assemblies are arranged on the upper end surfaces of two sides of the backrest, two fixing plates are arranged at corresponding positions of the upper beam 2 of the chair basin, and the upper part of the backrest is fixed on the chair basin through the fixing plates by the quick-release pins. Through the up-and-down positioning, the backrest and the chair basin are stably connected at four points.
In conclusion, the installation and disassembly time of the ejection seat backrest is effectively shortened, and the maintenance performance of the ejection seat is improved. The design structure is simple, the manufacturing and maintenance cost is low, and the influence on the backrest of the seat is changed little. The utility model discloses belong to the first proposition in the back maintenance mode of ejecting the seat at home and abroad, have novelty and originality. The ejection seat can be applied to ejection seats of various models in the active service and the future of China, particularly can meet the requirements of seat disassembly and assembly in a cabin, and has strong practicability and good popularization.
The above is only a preferred embodiment of the present invention, and the scope of the right of the present invention should not be limited by this, so that the equivalent changes made in the claims of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. A quickly-mounted and dismounted seat backrest is characterized by comprising a backrest and a seat basin, wherein the backrest is connected with the seat basin through a quick-dismounting assembly, and two sides of the backrest are connected with side plates of the seat basin through positioning assemblies; the quick-release pin assembly comprises a quick-release pin and a fixing piece, the fixing piece is fixedly connected with the chair basin, a clamping hole is formed in the fixing piece, and the quick-release pin penetrates through the backrest plate hole and is clamped into the clamping hole in the fixing piece.
2. The quick install release seat back of claim 1, wherein the number of the quick release pin assemblies is 2, and the two quick release pin assemblies are respectively disposed at both sides of the back.
3. The quick install release seat back of claim 1, wherein the quick release pin assembly further comprises a tab secured to the back and a connecting cord having one end connected to the tab and the other end connected to the quick release pin.
4. The quick install release seat back of claim 3, wherein the tab is secured to the back by a blunt head screw and a self-locking nut.
5. The quick install release seat back of claim 3, wherein one end of the connecting cord is connected to one cord end ball through a through hole in the wing, and the other end of the connecting cord is connected to another cord end ball through a through hole in the quick release pin, the cord end ball having a diameter greater than the diameter of the through hole.
6. The quick install release seat back of claim 3, wherein the connecting cord is a steel cord.
7. The quick-install and disassemble type seat back of claim 1, wherein the quick-detach pin comprises a pin, a barrel and a locking ball, one end of the pin is sleeved in the barrel, a slot is arranged on the barrel along the circumferential direction, the locking ball is arranged in the slot, a groove is arranged on the pin along the circumferential direction, the groove corresponds to the slot, the pin moves down along the barrel to enable the groove and the slot to have the same axial position, the locking ball falls into the groove, and the locking ball sinks into the barrel; the pin moves again to make the groove and the groove hole dislocated, the locking ball moves out of the groove, the locking ball protrudes outwards on the groove hole and forms locking with the clamping hole on the fixing piece.
8. The quick install and remove seat back of claim 7, wherein a spring is connected between the pin and the barrel to maintain the offset between the groove of the pin and the slot of the barrel by the spring force.
9. The quick assembly disassembly formula backrest of claim 1, wherein, the locating component includes a guide shaft and a guide support, the guide shaft and the guide support are respectively fixed on the backrest and the seat pan, the guide support is provided with a locating slot, and the outer end of the guide shaft is arranged in the locating slot.
10. The quick install release seat back of claim 9, wherein the positioning slot is a semi-open arc slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022680961.5U CN213605399U (en) | 2020-11-18 | 2020-11-18 | Install dismantlement formula backrest fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022680961.5U CN213605399U (en) | 2020-11-18 | 2020-11-18 | Install dismantlement formula backrest fast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213605399U true CN213605399U (en) | 2021-07-06 |
Family
ID=76635436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022680961.5U Active CN213605399U (en) | 2020-11-18 | 2020-11-18 | Install dismantlement formula backrest fast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213605399U (en) |
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2020
- 2020-11-18 CN CN202022680961.5U patent/CN213605399U/en active Active
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