CN209938965U - Light quick-release chair leg lock - Google Patents
Light quick-release chair leg lock Download PDFInfo
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- CN209938965U CN209938965U CN201822115446.5U CN201822115446U CN209938965U CN 209938965 U CN209938965 U CN 209938965U CN 201822115446 U CN201822115446 U CN 201822115446U CN 209938965 U CN209938965 U CN 209938965U
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- locking block
- locking
- chair leg
- lock
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Abstract
The utility model relates to a light-duty quick detach formula chair leg lock, including lock body (1), locking block (5), locking lever (6), lock body (1) one end horizontal direction is equipped with a plurality of locking teeth (105) that can block into guide rail (12), and the other end is provided with boss (103), and locking lever (6) one end is connected with boss (103), and the other end is provided with arch (601), to lifting pull locking block (5), and rotatory arch (601) that makes locking lever (6) change over to the inner ring groove (504) of locking block (5) in, can make locking block (5) keep at the unblock position, and chair leg lock keeps at the state of unblanking. The utility model discloses the unlocking and locking of chair leg lock all need not the instrument, and the operation is succinct, convenient.
Description
Technical Field
The utility model relates to a helicopter rear deck seat and cabin guide rail's coupling mechanism, concretely relates to light-duty quick-release chair leg lock.
Background
Because the helicopter reachability is high, and the range of application is extremely wide, is honored as general purpose aircraft, can be used for transporting passenger, vehicle, equipment etc. and cominging in and going out complicated topography. Therefore, rear cabin passenger seats equipped for the helicopter are required to have the capability of being quickly installed and disassembled so as to meet the multifunctional requirement of the helicopter. And the chair leg lock is a key part for realizing the quick assembly and disassembly of the chair.
Chinese patent discloses three kinds of technical schemes of chair leg lock, and publication numbers are CN 202557798U, CN 204473145U and CN 205801524U respectively, have realized comparatively swift installation and dismantlement of seat and cabin among these three patent's technical scheme, still have some shortcomings:
1 require a tool to unlock. After the CN 202557798U chair leg lock needs to be pressed to prevent the locking piece from being opened, the hexagon head bolt is unscrewed by a spanner; the CN 204473145U chair leg lock needs to be unlocked by pushing the second guide pillar inwards by a tool; the CN 205801524U chair leg lock needs to be unlocked by the hexagon socket head cap spanner rotating press plate both sides hexagon socket head cap pin.
The 2 helicopter has extremely strict requirements on the weight of the seat, and the technical solutions of the three prior patents are generally heavier.
3 the deformation tolerance of the airplane floor is poor. Because the power of the helicopter is arranged at the top of the rear cabin, when the helicopter takes off, the top of the cabin and the cabin wall can generate larger deformation, the upper interface and the lower interface of the seat are not in the same vertical plane any more, and the phenomena that the seat is difficult to install and the seat is damaged due to the taking-off load of the helicopter are generated.
The utility model has the following contents:
utility model purpose: in order to solve the problems that the prior chair leg lock needs to be unlocked by tools, has heavy weight and poor floor deformation tolerance capability, the utility model provides a light-duty quick-release chair leg lock.
The technical scheme is as follows: a light quick-release chair leg lock is characterized by comprising a lock body (1), a connecting piece (2), a lining (3), a large cylindrical pin (4), a locking block (5), a locking rod (6), a compression spring (7), a steel gasket (8) and a small cylindrical pin (10), wherein the lining (3) is arranged in a hole (201) in the connecting piece (2), and the connecting piece (2) is connected to the lock body (1) through the large cylindrical pin (4);
one end of the lock body (1) is horizontally provided with a locking tooth (105) which can be clamped into the guide rail (12), the first connecting lug (101) connected with the connecting piece (2) is vertically arranged, the other end of the lock body is provided with a boss (103), the boss (103) is vertically provided with a round hole (102), a small pin hole (104) communicated with the round hole (102) is horizontally arranged along the round hole (102), and the lock rod (6) is inserted into the small pin hole (104) through a small cylindrical pin (10) and is connected to the lock body (1); the compression spring (7), the steel gasket (8), the polytetrafluoroethylene gasket (9) and the locking block (5) are sequentially sleeved on the locking rod (6); a bulge (601) is arranged on the lock rod (6), and a groove (501) and an inner ring groove (504) are arranged on the locking block (5); the bottom end of the locking block (5) is a downward annular step hole which can be matched and sleeved on the boss (103) to be in clearance fit connection with the boss, so that the locking block (5) can limit all degrees of freedom beyond the axial direction;
the outer diameter of the locking block (5) is matched with the circular hole (1201) of the slide rail, so that the locking block can be clamped on the step surface (1202) in the slide rail; the distance between the central point of the locking tooth (105) and the central point of the locking block (5) is equal to the distance between the two round holes of the slide rail, and the locking tooth (105) can be clamped under the step of the two round holes of the slide rail during locking.
The locking block is lifted upwards, the protrusion of the locking rod is rotated to be rotated into the inner annular groove of the locking block, the locking block can be kept at an unlocking position, and the chair leg lock is kept in an unlocking state; then the locking teeth of the lock body are inserted into the round holes on the universal guide rail and then move leftwards or rightwards to enable the locking teeth to be clamped into the steps of the two round holes of the slide rail, the lower portion of the locking block is clamped into the round holes of the slide rail, the locking block is rotated to the initial position and automatically falls down under the action of the compression spring, and the chair leg lock is shaken to enable the locking block to be clamped into the round holes of the slide rail on the universal guide rail to achieve locking.
In the scheme, the lock rod is further provided with a waist-shaped section and a pin hole, the steel gasket is provided with a waist-shaped hole, and the steel gasket is sleeved on the waist-shaped section of the lock rod through the waist-shaped hole to limit the rotation of the lock rod.
In the scheme, the large cylindrical pin is in interference fit with the pin hole in the connecting piece and is in clearance fit with the large pin hole in the lock body, so that the connecting piece can freely rotate around the large cylindrical pin.
In the above scheme, the number of the connecting lugs on the lock body is preferably 3-6.
In the scheme, the steel gasket is further provided with a polytetrafluoroethylene gasket for preventing the steel gasket from wearing the ring platform in the rotating process of the locking block.
In the scheme, the locking block is provided with an outer ring groove which serves as an unlocking handle and can reduce weight.
In the above scheme, the connecting piece is provided with a plurality of connecting lugs which are matched with the connecting lugs arranged on the lock body.
In the scheme, the spring force of the compression spring is 20-40N.
In the scheme, the limiting groove is matched with the two cylindrical pins to limit the rotation angle of the chair leg lock around the screw within +/-10 degrees.
In the scheme, the locking block is further provided with a rotating arrow and an up-down arrow which are convenient to operate.
The utility model has the advantages and beneficial effects:
1) the utility model discloses the unlocking and locking of chair leg lock all need not the instrument, and the operation is succinct, convenient.
2) The chair leg lock of the utility model can adapt to the deformation condition of the airplane floor.
3) The chair leg lock of the utility model has extremely light weight, only 53 g.
4) The utility model discloses chair leg lock matches aviation universal guide rail, and application scope is wide.
Drawings
FIG. 1 is a schematic view of a chair leg lock of the present invention;
figure 2 is a schematic view of a lock body structure;
FIG. 3 is a schematic view of a connector configuration;
FIG. 4 is a schematic view of a locking block construction;
FIG. 5 is a schematic view of the locking bar construction;
FIG. 6 is a schematic view of a steel gasket construction;
FIG. 7 is a schematic view of the chair leg lock of the present invention;
fig. 8 is a schematic structural diagram of a universal guide rail conforming to the HB6870 standard.
In the figure: 1-lock body, 2-connecting piece, 3-bushing, 4-big cylindrical pin, 5-locking block, 6-locking rod, 7-compression spring, 8-steel gasket, 9-polytetrafluoroethylene gasket, 10-small cylindrical pin, 11-chair leg lock, 12-universal guide rail, 13-cylindrical pin, 14-screw, 15-seat joint, 101-connecting lug, 102-round hole, 103-limit boss, 104-small pin hole, 105-locking tooth, 106-big pin hole, 107-weight reduction groove, 201-round hole, 202-limit groove, 203-connecting lug, 204-pin hole, 501-groove, 502-rotation arrow, 503-up and down arrow, 504-inner ring groove, 505-ring table, 506-outer ring groove, 601-protrusion, 602-waist section, 603-pin hole, 801-waist hole, 1201-slide rail round hole and 1202-slide rail inner table step surface.
Detailed Description
The invention will be described in further detail by means of embodiments with reference to the accompanying drawings:
a light quick-release chair leg lock comprises a lock body 1, a connecting piece 2, a bushing 3, a large cylindrical pin 4, a locking block 5, a locking rod 6, a compression spring 7, a steel gasket 8, a polytetrafluoroethylene gasket 9 and a small cylindrical pin 10, wherein the bushing 3 is arranged in a hole 201 on the connecting piece 2, and the connecting piece 2 is connected to the lock body 1 through the large cylindrical pin 4; the compression spring 7, the steel gasket 8, the polytetrafluoroethylene gasket 9 and the locking block 5 are sequentially sleeved on the locking rod 6;
a plurality of locking teeth 105 which can be clamped into the guide rail 12 are horizontally arranged at one end of the lock body 1, a connecting lug 101 connected with the connecting piece 2 is vertically arranged at the other end of the lock body, a round hole 102 is vertically arranged on the boss 103, a small pin hole 104 communicated with the round hole 102 is horizontally arranged along the round hole 102, and the lock rod 6 is inserted into the small pin hole 104 through a small cylindrical pin 10 and connected to the lock body 1; the compression spring 7, the steel gasket 8, the polytetrafluoroethylene gasket 9 and the locking block 5 are sequentially sleeved on the locking rod 6; a protrusion 601 is arranged on the lock rod 6, and a groove 501 and an inner ring groove 504 are arranged on the locking block 5; the bottom end of the locking block 5 is a downward annular step hole which can be just sleeved on the boss 103 to be in clearance fit connection with the boss, so that the locking block 5 can limit all degrees of freedom beyond the axial direction;
the outer diameter of the locking block 5 is matched with the slide rail round hole 1201, so that the locking block can be clamped on the step surface 1202 in the slide rail; the distance between the central point of the locking tooth 105 and the central point of the locking block 5 is just the distance between the two round holes of the slide rail, and the locking tooth 105 can be clamped under the steps of the two round holes of the slide rail during locking.
As shown in fig. 1, the light quick-release chair leg lock comprises a lock body 1, a connecting piece 2, a lining 3, a large cylindrical pin 4, a locking block 5, a locking rod 6, a compression spring 7, a steel gasket 8, a polytetrafluoroethylene gasket 9 and a small cylindrical pin 10.
The lining 3 is made of high-strength wear-resistant materials, so that the service life of the chair leg lock can be effectively prolonged. Is arranged in the hole 201 on the connecting piece 2; the connecting piece 2 is connected to the lock body 1 through a large cylindrical pin 4; the compression spring 7, the steel gasket 8, the polytetrafluoroethylene gasket 9 and the locking block 5 are sequentially sleeved on the locking rod 6; the locking bar 6 is connected to the lock body 1 by a small cylindrical pin 10.
As shown in fig. 2, the lock body 1 is provided with an attachment tab 101, a round hole 102, a boss 103, a small pin hole 104, a locking tooth 105, a large pin hole 106 and a lightening slot 107. The number of the connecting lugs 101 on the lock body 1 is preferably 3-6, the connecting lugs are used for increasing the number of stressed shear surfaces on the large cylindrical pin 4 and reducing the diameter of the large cylindrical pin 4, and therefore the weight of the lock body 1, the connecting piece 2 and the large cylindrical pin 4 is reduced.
As shown in fig. 3, the connecting member 2 is provided with a circular hole 201, a limiting groove 202, a connecting lug 203 and a pin hole 204.
As shown in fig. 4, the locking block 5 is provided with a groove 501, a rotation arrow 502, an up-down arrow 503, an inner annular groove 504, a land 505 and an outer annular groove 506.
As shown in fig. 5, the lock lever 6 is provided with a projection 601, a kidney-shaped section 602, and a pin hole 603.
As shown in fig. 6, the steel gasket 8 is provided with a kidney-shaped hole 801.
The large cylindrical pin 4 is in interference fit with the pin hole 204 on the connecting piece 2 and is in clearance fit with the large pin hole 106 on the lock body 1, so that the connecting piece 2 can freely rotate around the large cylindrical pin 4, the floor deformation can be effectively adapted, and the installation and the disassembly of the seat under the condition of floor deformation are realized.
The lock rod 6 is further provided with a waist-shaped section 602 and a pin hole 603, the steel gasket 8 is provided with a waist-shaped hole 801, and the steel gasket 8 is sleeved on the waist-shaped section 602 of the lock rod 6 through the waist-shaped hole 801 to limit the rotation of the lock rod 6.
A teflon washer 9 is also placed on the steel washer 8 to prevent the steel washer 8 from wearing the ring platform 505 during rotation of the locking block 5.
The locking block 5 is provided with an outer ring groove 506 which serves as an unlocking handle and can reduce weight.
The connecting piece 2 is provided with a plurality of connecting lugs 203 which are matched with the connecting lugs 101 arranged on the lock body 1.
The spring force of the compression spring 7 is 20-40N.
The limiting groove 202 is matched with the two cylindrical pins 13 to limit the rotation angle of the chair leg lock around the screw 14 within +/-10 degrees, so that the operation difficulty caused by free rotation of the chair leg lock when the locking block 5 is pulled upwards is avoided.
The chair leg lock can rotate around the screw 14 to adapt to the deformation of the airplane floor, and the installation and the disassembly of the seat under the condition of floor deformation are realized.
The lock rod 6 is further provided with a waist-shaped section 602 and a pin hole 603, the steel gasket 8 is provided with a waist-shaped hole 801, and the steel gasket 8 is sleeved on the waist-shaped section 602 of the lock rod 6 through the waist-shaped hole 801 to limit the rotation of the lock rod 6.
The connecting piece 2 is provided with a plurality of connecting lug pieces 203 which are matched with the connecting lug pieces 101 on the lock body 1, so that the connecting piece 2 is connected with the lock body 1.
Said boss 103 limits all degrees of freedom of the locking block 5 other than axially.
The lining 3 is made of high-strength wear-resistant materials, so that the service life of the chair leg lock is effectively prolonged.
The limiting groove 202 is matched with the 2 cylindrical pins 13 to limit the rotation angle of the chair leg lock around the screw 14 within +/-10 degrees, so that the operation difficulty caused by free rotation of the chair leg lock when the locking block 5 is pulled upwards is avoided.
The outer annular groove 506 allows the locking piece 5 to simultaneously act as an unlocking handle and to play a weight-saving role.
The rotation arrow 502 and the up-down arrow 503 play a role of guiding the operation.
The recess 501 serves to avoid the protrusion 601.
After the protrusion 601 is snapped into the inner annular groove 504, the locking block 5 can be maintained in the unlocked position.
The polytetrafluoroethylene gasket 9 plays a role in preventing the steel gasket 8 from wearing the annular table 505 in the rotation process of the locking block 5, and can effectively reduce friction force and improve the convenience of operation.
The waist-shaped hole 801 and the waist-shaped section 602 are matched to ensure that the steel gasket 8 does not rotate along with the rotation of the locking block 5, so that the compression spring 7 is prevented from being damaged due to the rotation.
The universal guide rail is an aviation universal guide rail and accords with HB6870 standard.
The utility model discloses a theory of operation:
the locking block 5 is lifted upwards, the protrusion 601 of the locking rod 6 is rotated to rotate into the inner annular groove 504 of the locking block 5, the locking block 5 can be kept at the unlocking position, and the chair leg lock is kept in the unlocking state; then, after the locking teeth 105 of the lock body 1 are inserted into the circular holes 1201 on the universal guide rail 12, the lock body moves leftwards or rightwards to enable the locking teeth 105 to be clamped into the steps of the two circular holes of the slide rail, the lower portion of the locking block 5 is clamped into the circular holes of the slide rail, the locking block 5 is rotated to the initial position, the locking block 5 automatically falls under the action of the compression spring 7, and the leg lock of the chair is shaken to enable the locking block 5 to be clamped into the circular holes 1201 of the slide rail on the universal guide rail 12 to.
Fig. 7 shows a schematic diagram of an actual working condition of the light-duty quick-release chair leg lock of the utility model: the screw 5 connects the seat joint 15 and the leg lock 11 together. When in use, the locking block 5 is lifted upwards and then rotated by about 30 degrees, so that the bulge 601 of the locking rod 6 is rotated into the inner annular groove 504 of the locking block 5, and the chair leg lock is kept in an unlocking state; then the locking teeth 105 of the lock body 1 are inserted into the round holes 1201 on the universal guide rail 12, and then the chair leg lock is moved leftwards or rightwards by about 12.7 mm; the locking block 5 is rotated back to the initial position, and the locking block 5 automatically falls under the action of the compression spring 7; and (3) swinging the chair leg lock to enable the locking block 5 to be clamped into the round hole 1201 on the universal guide rail 12, and completing the locking of the chair leg lock.
Claims (9)
1. A light quick-release chair leg lock is characterized by comprising a lock body (1), a connecting piece (2), a lining (3), a large cylindrical pin (4), a locking block (5), a locking rod (6), a compression spring (7), a steel gasket (8) and a small cylindrical pin (10), wherein the lining (3) is arranged in a hole (201) in the connecting piece (2), and the connecting piece (2) is connected to the lock body (1) through the large cylindrical pin (4);
one end of the lock body (1) is horizontally provided with a locking tooth (105) which can be clamped into the guide rail (12), the first connecting lug (101) connected with the connecting piece (2) is vertically arranged, the other end of the lock body is provided with a boss (103), the boss (103) is vertically provided with a round hole (102), a small pin hole (104) communicated with the round hole (102) is horizontally arranged along the round hole (102), and the lock rod (6) is inserted into the small pin hole (104) through a small cylindrical pin (10) and is connected to the lock body (1); the compression spring (7), the steel gasket (8), the polytetrafluoroethylene gasket (9) and the locking block (5) are sequentially sleeved on the locking rod (6); a bulge (601) is arranged on the lock rod (6), and a groove (501) and an inner ring groove (504) are arranged on the locking block (5); the bottom end of the locking block (5) is a downward annular step hole which can be matched and sleeved on the boss (103) to be in clearance fit connection with the boss, so that the locking block (5) can limit all degrees of freedom beyond the axial direction;
the outer diameter of the locking block (5) is matched with the circular hole (1201) of the slide rail, so that the locking block can be clamped on the step surface (1202) in the slide rail; the distance between the central point of the locking tooth (105) and the central point of the locking block (5) is equal to the distance between the two round holes of the slide rail, and the locking tooth (105) can be clamped under the step of the two round holes of the slide rail during locking.
2. A light weight quick release chair leg lock according to claim 1, characterized in that the lock rod (6) is further provided with a waist-shaped section (602) and a second pin hole, the steel gasket (8) is provided with a waist-shaped hole (801), and the steel gasket (8) is sleeved on the waist-shaped section (602) of the lock rod (6) through the waist-shaped hole (801) to limit the rotation of the lock rod (6).
3. A light weight quick release chair leg lock according to claim 1, characterized in that the big cylindrical pin (4) is in interference fit with the first pin hole (204) of the connecting piece (2) and in clearance fit with the big pin hole (106) of the lock body (1), so that the connecting piece (2) can rotate freely around the big cylindrical pin (4).
4. A light weight quick release chair leg lock according to claim 1, characterized in that the number of the first connecting tab (101) of the lock body (1) is preferably 3-6.
5. A light weight quick release chair leg lock according to claim 1, characterized in that a teflon washer (9) is further placed on the steel washer (8) to prevent the steel washer (8) from wearing the ring platform (505) during the rotation of the locking block (5).
6. A light weight, quick release chair leg lock according to claim 1, characterized in that the locking block (5) is provided with an outer ring groove (506) which acts as an unlocking handle and is weight-saving.
7. A light weight quick release chair leg lock according to claim 1, characterized in that the connecting member (2) is provided with a plurality of second connection tabs (203) matching with the first connection tabs (101) provided on the lock body (1).
8. A light weight quick release chair leg lock according to claim 1, characterized in that the magnitude of the spring force of the compression spring (7) is 20-40N.
9. A light weight quick release chair leg lock according to claim 1, characterized in that the locking block (5) is further provided with a rotation arrow (502) and up-down arrows (503) for easy operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822115446.5U CN209938965U (en) | 2018-12-17 | 2018-12-17 | Light quick-release chair leg lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822115446.5U CN209938965U (en) | 2018-12-17 | 2018-12-17 | Light quick-release chair leg lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209938965U true CN209938965U (en) | 2020-01-14 |
Family
ID=69118950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822115446.5U Active CN209938965U (en) | 2018-12-17 | 2018-12-17 | Light quick-release chair leg lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209938965U (en) |
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2018
- 2018-12-17 CN CN201822115446.5U patent/CN209938965U/en active Active
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