CN115211663A

CN115211663A - Foldable anti-tilt structure

Info

Publication number: CN115211663A
Application number: CN202211146619.4A
Authority: CN
Inventors: 谢明星; 朱增海; 蔡威; 宋振颖
Original assignee: Korita Aviation Suzhou Co ltd
Current assignee: Korita Aviation Suzhou Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2022-10-21
Anticipated expiration: 2042-09-21
Also published as: CN115211663B

Abstract

The invention belongs to the technical field of aviation dining cars, and particularly designs a foldable anti-tilting structure which comprises a U-shaped tube, wherein a driving assembly is connected between two ends of the U-shaped tube and is used for driving two ends of the U-shaped tube to gather or unfold; a pair of L-shaped clamping plates are symmetrically arranged on the side surface of the U-shaped pipe, and a countersunk head screw I is mounted on each L-shaped clamping plate; a cushion block and a nut column are fixedly connected to the U-shaped pipe, and one end of the nut column extends out of the cushion block and then is in threaded connection with the countersunk head screw; a rotating arm is hinged in the middle of the U-shaped pipe, and a stay bar is fixedly connected to the end part of the rotating arm; the locking assembly is used for preventing the rotating arm from rotating. The anti-tilting structure is a detachable structure, and when the anti-tilting structure is installed, the two ends of the U-shaped pipe can be converged by rotating the handle, so that the L-shaped clamping plate clamps the dining car, and then the stay bar is unfolded to play the anti-tilting role. The support rod of the dining car can be folded, and the support rod can be folded when not in use, so that the dining car can be conveniently stored.

Description

Foldable anti-tilt structure

Technical Field

The invention belongs to the technical field of aviation dining cars, and particularly relates to a foldable anti-tilting structure.

Background

An aviation dining car is a device for facilitating the transportation of food by air passengers, and the appearance of the aviation dining car can facilitate the transportation of lunch boxes or food by the passengers. Because the aircraft passageway space is comparatively narrow and the aviation dining car focus is higher, this kind of aviation dining car is when using, if the barrier is touched to the aviation dining car bottom, the easy emergence of aviation dining car is emptyd. The aviation dining car in the prior art lacks an anti-toppling structure.

Disclosure of Invention

In view of the above-mentioned shortcomings, it is an object of the present invention to provide a foldable anti-roll structure.

The invention provides the following technical scheme:

a foldable anti-tilting structure comprises a U-shaped pipe, wherein a driving assembly is connected between two ends of the U-shaped pipe and is used for driving two ends of the U-shaped pipe to contract or expand;

a pair of L-shaped clamping plates are symmetrically arranged on the side surface of the U-shaped pipe, and a countersunk head screw I is mounted on each L-shaped clamping plate;

the U-shaped pipe is fixedly connected with a cushion block, the cushion block is provided with a boss, and a first countersunk screw is in threaded connection with the cushion block and the U-shaped pipe;

a rotating arm is hinged in the middle of the U-shaped pipe, and a stay bar is fixedly connected to the end part of the rotating arm; the locking assembly is used for preventing the rotating arm from rotating.

The two ends of the U-shaped pipe are fixedly connected with mounting rods.

The driving assembly comprises a pair of pull rods fixedly connected with two ends of the U-shaped pipe respectively; the end parts of the pair of pull rods are respectively inserted into the two ends of the handle and are in threaded connection with the screw rods with the positive and negative teeth fixedly connected in the handle.

The handle is provided with a through groove, a hexagonal block is arranged in the middle of the positive and negative screw rods, and the hexagonal block is arranged in the through groove and connected with the handle through a fastening screw.

The L-shaped clamping plate is also provided with a countersunk head screw II, and the countersunk head screw II extends into a limiting groove formed in the U-shaped pipe and the mounting rod; and a nut post is arranged on the countersunk head screw II extending into the limiting groove, and a gap is reserved between the groove wall of the limiting groove and the nut post.

An annular limiting groove is arranged in the middle of the U-shaped pipe; the pair of rotating arms are arranged at intervals, one end of each rotating arm is provided with a through hole, and the other end of each rotating arm is fixedly connected with the stay bar;

the locking assembly comprises a cross beam fixedly connected between a pair of rotating arms, a pair of insertion rods are slidably inserted in the cross beam, and a holding plate is fixedly connected between the insertion rods; one end of the inserted link is inserted into the mounting groove of the stay bar and is connected with the groove bottom of the mounting groove through a spring;

the bottom of the annular limiting groove is provided with a pair of inclined jacks and a pair of vertical jacks.

The included angle between the central line of the inclined jack and the central line of the vertical jack is 100-135 degrees.

And a positioning pin is fixedly connected to one side of the U-shaped pipe, which deviates from the inclined jack in the middle.

The end face of the boss is 0.15-0.50mm higher than the end face of the cushion block.

The inner side of the L-shaped clamping plate is stuck with a rubber strip.

The invention has the beneficial effects that: the anti-toppling structure is a detachable structure, and when the anti-toppling structure is installed, the two ends of the U-shaped pipe can be gathered by rotating the handle, so that the L-shaped clamping plate clamps the dining car tightly, and then the support rod is unfolded to play an anti-toppling role. The support rod of the dining car can be folded, and the support rod can be folded when not in use, so that the dining car can be conveniently stored. The end face of the boss is higher than the end face of the cushion block, so that the L-shaped clamping plate can be attached to the end face of the boss, and the rotating stability of the L-shaped clamping plate can be improved when the L-shaped clamping plate rotates. Due to the fact that the cushion block is arranged, the L-shaped clamping plate can be limited, the L-shaped clamping plate is prevented from being inclined, the problem that the attaching area of the dining car is reduced due to the fact that the L-shaped clamping plate is inclined is solved, clamping stability can be improved, and falling of the anti-inclination structure is avoided.

Drawings

FIG. 1 is a rear elevational view of the brace bar of the present invention as deployed;

FIG. 2 is a rear elevational view of the stay of the present invention after folding;

FIG. 3 is a perspective view of the stay of the present invention after deployment;

FIG. 4 is a schematic view of the present invention mounted on a dining car;

FIG. 5 is a schematic view of the handle and the threaded rod with the forward and reverse threads;

FIG. 6 is a schematic view of a screw with positive and negative teeth;

FIG. 7 is an L-shaped clamping plate mounting schematic;

FIG. 8 is a schematic view of a spacer installation;

FIG. 9 is a schematic view of a boss;

FIG. 10 is an enlarged view at A in FIG. 1;

FIG. 11 is a schematic view of the latch assembly;

FIG. 12 is a schematic view of an annular restraint groove.

Labeled as: the device comprises a U-shaped pipe 101, a pull rod 102, a handle 103, a fastening screw 104, a positioning pin 105, a positive and negative threaded rod 106, a hexagonal block 107, a mounting rod 108, a limiting groove 109, a dining car 110, an L-shaped clamping plate 201, a rubber strip 202, a countersunk screw II 203, a cushion block 204, a countersunk screw 205, a boss 206, a support rod 301, a rotating arm 302, an inserted rod 303, a cross beam 304, an annular limiting groove 305, a clamping plate 306, a spring 307, a through hole 308, an inclined insertion hole 309 and a vertical insertion hole 310.

Detailed Description

Example one

As shown in the figure, the foldable anti-tilting structure comprises a U-shaped pipe 101, wherein the U-shaped pipe 101 is a hollow pipe, a driving assembly is connected between two ends of the U-shaped pipe 101, and the two ends of the U-shaped pipe 101 can be driven to contract or expand through the driving assembly. Specifically, the mounting rods 108 are fixedly connected in the two end pipes of the U-shaped pipe 101, the mounting rods 108 are inserted into the two end pipes of the U-shaped pipe 101, and then are fixed by screws, and the outer side surfaces of the mounting rods 108 are tightly attached to the pipe wall of the U-shaped pipe 101. The lower end of the installation rod 108 is still at a certain distance from the bent part of the U-shaped tube 101, so that when the two ends of the U-shaped tube 101 are pulled and gathered, the U-shaped tube 101 with the installation rod 108 cannot deform, and the bent part of the U-shaped tube 101 without the installation rod 108 deforms, so that the two ends of the U-shaped tube 101 are pulled and gathered.

The driving assembly comprises a pair of pull rods 102 fixedly connected with two ends of the U-shaped tube 101 respectively, and the pull rods 102 are connected with the U-shaped tube 101 and the mounting rod 108 through screws. The ends of the pair of pull rods 102 are inserted into the two ends of the handle 103 respectively and are in threaded connection with a screw 106 with positive and negative teeth fixedly connected in the handle 103. Specifically, a through groove is formed in the handle 103, a hexagonal groove is formed in the middle of the through groove, and two ends of the through groove are cylindrical grooves. The right and left threaded rod 106 is centrally provided with a hexagonal block 107, and the hexagonal block 107 is embedded in the hexagonal groove. The handle 103 is rotated to rotate the screw rods 106, and the pull rods 102 are in threaded connection with the screw rods 106, so that the pair of pull rods 102 can be moved towards each other by rotating the handle 103 clockwise, or the pair of pull rods can be moved away from each other by rotating the handle 103 counterclockwise.

In order to prevent the hexagonal block 107 from being displaced in the hexagonal groove, a fastening screw 104 is screwed to the handle 103, and one end of the fastening screw 104 is fitted into a threaded hole provided in the hexagonal block 107. The tightening screw 104 may constrain the hex block 107 from rotating relative to the handle 103.

A pair of L-shaped clamping plates 201 are symmetrically arranged on the side surface of the U-shaped pipe 101, and a countersunk head screw I205 is arranged on each L-shaped clamping plate 201. The U-shaped pipe 101 is fixedly connected with a cushion block 204, the cushion block 204 is provided with a boss 206, and a first countersunk screw 205 is in threaded connection with the cushion block 204 and the U-shaped pipe 101. Specifically, the value L of the end surface of the boss 206 above the end surface of the spacer 204 is 0.15-0.50mm, preferably L =0.2mm. When the U-shaped tube 101 is pulled by the pull rod 102 to be gathered, the two ends of the U-shaped tube 101 are not kept in the vertical state any more, and the L-shaped clamping plates 201 need to be kept in the vertical state to be attached to the side faces of the dining car 110 as far as possible, so that the L-shaped clamping plates 201 can deflect relative to the two ends of the U-shaped tube 101 at the moment. Since the end surface of the boss 206 is higher than the end surface of the pad 204, the L-shaped clamping plate 201 can be rotated stably under the restriction of the end surface of the boss 206. The cushion block 204 can play a limiting role, and can prevent the L-shaped clamping plate 201 from being inclined in a large range, so that the attaching area of the L-shaped clamping plate 201 and the side face of the dining car 110 is ensured.

The L-shaped clamping plate 201 is further provided with a countersunk head screw II 203, and the countersunk head screw II 203 extends into a limiting groove 109 formed in the U-shaped pipe 101 and the mounting rod 108. A nut column is arranged on the countersunk head screw II 203 which extends into the limiting groove 109, and a gap is reserved between the groove wall of the limiting groove 109 and the nut column. The L-shaped clamping plate 201 can deflect within the clearance range, and when the nut stud abuts against the wall of the retaining groove 109, the L-shaped clamping plate 201 cannot deflect any more. The deflection range of the L-shaped clamping plate 201 is limited to ensure that the U-shaped pipe 101 can pull the L-shaped clamping plate 201 to be tightly attached to the side surface of the dining car 110, thereby facilitating clamping.

A rotating arm 302 is hinged in the middle of the U-shaped pipe 101, and a stay 301 is fixedly connected to the end of the rotating arm 302. A locking assembly is also included for preventing rotation of the rotatable arm 302 so that the strut 301 can be switched between the folded and unfolded states. Specifically, the U-shaped tube 101 is provided with an annular limiting groove 305 in the center, a pair of rotating arms 302 are arranged at intervals, one end of each rotating arm 302 is provided with a through hole 308, and the other end of each rotating arm 302 is fixedly connected with the stay 301. Two sides of the rotating arm 302 are tightly attached to two side groove walls of the annular limiting groove 305, so that the rotating arm 302 cannot be transversely displaced.

The locking assembly comprises a cross beam 304 fixedly connected between a pair of rotating arms 302, a pair of insertion rods 303 are slidably inserted in the cross beam 304, and a holding plate 306 is fixedly connected between the insertion rods 303. One end of the inserting rod 303 is inserted into the mounting groove formed in the stay bar 301 and is connected with the bottom of the mounting groove through a spring 307. The bottom of the annular limiting groove 305 is provided with a pair of inclined insertion holes 309 and a pair of vertical insertion holes 310.

After the holding plate 306 is held, the insertion rod 303 is pulled toward the stay 301 to compress the spring 307, and the other end of the insertion rod 303 leaves the inclined insertion hole 309 or the vertical insertion hole 310, and the rotating arm 302 can be rotated. When the rotating arm 302 is rotated to align the insertion rod 303 with the slanted insertion hole 309 or the vertical insertion hole 310, the grip plate 306 is released, and the insertion rod 303 is moved by the elastic force of the spring 307, so that the other end of the insertion rod 303 is inserted into the slanted insertion hole 309 or the vertical insertion hole 310. When the other end of the inserting rod 303 is inserted into the inclined inserting hole 309, the support rod 301 is in an unfolded state; when the other end of the insert rod 303 is inserted into the vertical insertion hole 310, the stay 301 is in a folded state.

The included angle between the central line of the inclined insertion hole 309 and the central line of the vertical insertion hole 310 is 100-135 degrees, and preferably, the included angle between the stay 301 and the U-shaped pipe 101 is 120 degrees after the stay is unfolded. When the dining car 110 is inclined, the support rods 301 are firstly contacted with the ground to form a support, so that the dining car 110 is prevented from toppling.

Example two

The difference between the present embodiment and the present embodiment is that a positioning pin 105 is fixedly connected to a side of the U-shaped tube 101 facing away from the slanted insertion hole 309. When the anti-tilting structure is installed, the positioning pin 105 is inserted into the positioning groove of the dining car 110, so that the positioning and installation are facilitated.

EXAMPLE III

The present embodiment is different from the above embodiments in that a rubber strip 202 is adhered to the inside of the L-shaped holding plate 201. The direct contact between the L-shaped clamping plate 201 and the side surface of the dining car 110 is avoided, and the excessive abrasion of the side surface of the dining car 110 can be avoided.

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 described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable anti-roll structure is characterized in that: the device comprises a U-shaped pipe (101), wherein a driving assembly is connected between two ends of the U-shaped pipe (101), and the driving assembly is used for driving two ends of the U-shaped pipe (101) to gather or unfold;

a pair of L-shaped clamping plates (201) are symmetrically arranged on the side surface of the U-shaped pipe (101), and a countersunk head screw I (205) is mounted on each L-shaped clamping plate (201);

a cushion block (204) is fixedly connected to the U-shaped pipe (101), a boss (206) is arranged on the cushion block (204), and a countersunk head screw I (205) is in threaded connection with the cushion block (204) and the U-shaped pipe (101);

a rotating arm (302) is hinged in the center of the U-shaped pipe (101), and a stay bar (301) is fixedly connected to the end part of the rotating arm (302); and the locking assembly is used for preventing the rotating arm (302) from rotating.

2. A collapsible anti-roll structure according to claim 1, characterised in that: the two ends of the U-shaped pipe (101) are fixedly connected with mounting rods (108).

3. A foldable anti-roll structure according to claim 2, characterised in that: the driving component comprises a pair of pull rods (102) which are fixedly connected with two ends of the U-shaped pipe (101) respectively; the ends of a pair of pull rods (102) are respectively inserted into the two ends of the handle (103) and are in threaded connection with a positive and negative thread screw (106) fixedly connected in the handle (103).

4. A foldable anti-roll structure according to claim 3, characterised in that: the handle (103) is provided with a through groove, the positive and negative screw (106) is provided with a hexagonal block (107) in the middle, and the hexagonal block (107) is arranged in the through groove and connected with the handle (103) through a fastening screw (104).

5. A collapsible anti-roll structure according to claim 2, characterised in that: a second countersunk head screw (203) is further mounted on the L-shaped clamping plate (201), and the second countersunk head screw (203) extends into a limiting groove (109) formed in the U-shaped pipe (101) and the mounting rod (108); a nut post is arranged on the countersunk head screw II (203) extending into the limiting groove (109), and a gap is reserved between the groove wall of the limiting groove (109) and the nut post.

6. A collapsible anti-roll structure according to claim 1, characterised in that: an annular limiting groove (305) is arranged in the middle of the U-shaped pipe (101); the pair of rotating arms (302) are arranged at intervals, one end of each rotating arm (302) is provided with a through hole (308), and the other end of each rotating arm (302) is fixedly connected with the stay bar (301);

the locking assembly comprises a cross beam (304) fixedly connected between a pair of rotating arms (302), a pair of insertion rods (303) are slidably inserted into the cross beam (304), and a holding plate (306) is fixedly connected between the insertion rods (303); one end of the inserted link (303) is inserted into the mounting groove of the brace (301) and is connected with the bottom of the mounting groove through a spring (307);

the groove bottom of the annular limiting groove (305) is provided with a pair of inclined insertion holes (309) and a pair of vertical insertion holes (310).

7. A collapsible anti-roll structure according to claim 6, characterised in that: the included angle between the central line of the inclined insertion hole (309) and the central line of the vertical insertion hole (310) is 100-135 degrees.

8. A collapsible anti-roll structure according to claim 6, characterised in that: and a positioning pin (105) is fixedly connected to one side of the U-shaped pipe (101) which deviates from the inclined insertion hole (309) in the middle.

9. A foldable anti-roll structure according to any one of claims 1-8, characterised in that: the end face of the boss (206) is 0.15-0.50mm higher than the end face of the cushion block (204).

10. A collapsible anti-roll structure according to claim 9, characterised in that: and a rubber strip (202) is adhered to the inner side of the L-shaped clamping plate (201).