CN218141306U - Negative pressure host machine for roof rack and inverted roof rack - Google Patents

Abstract

The utility model provides a negative pressure host computer and back-off roof rack for roof rack, the negative pressure host computer includes pressure switch, electronic aspiration pump, drive circuit and quick-operation joint, drive circuit connects and drives electronic aspiration pump work, electronic aspiration pump passes through negative pressure pipeline and quick-operation joint's one end intercommunication, quick-operation joint's the other end is formed with the interface, pressure switch is connected with drive circuit, pressure switch's pressure measurement end connects the negative pressure pipeline, can be according to the operating condition of the atmospheric pressure control drive circuit of negative pressure pipeline, the negative pressure host computer provides the negative pressure to the sucking disc of roof rack, during operation electronic aspiration pump bleeds and makes the sucking disc form the negative pressure, when the negative pressure of negative pressure pipeline reaches a definite value, pressure switch control electronic aspiration pump stop work, at this moment the sucking disc firmly adsorbs at the roof surface, and if the sucking disc leaks gas and leads to the negative pressure to reduce, pressure switch control electronic aspiration pump begins to work, until the negative pressure reaches the default, just so can prevent that the sucking disc from droing, thereby guarantee.

Description

Negative pressure host machine for roof rack and inverted roof rack

Technical Field

The utility model relates to a roof rack for being fixed the bicycle to the roof.

Background

Chinese patent document CN112744161A discloses a bicycle frame structure, can remove the fixed roof-rack that sets up in the car with removing for park and fixed bicycle, bicycle frame structure including: the bicycle frame comprises a tube body with a sliding groove, a front sliding seat with a sleeve seat and a replaceable front fork fixing sleeve component, and can slide or be fixed in the sliding groove of the tube body, and a rear sliding seat with a sliding groove of the tube body, wherein by means of the implementation of the invention, the structure of the bicycle frame can be simply arranged and operated; can be firmly fixed on the vehicle roof frame; the bicycle can be firmly fixed; the bicycle frame with the structure is suitable for various different types of bicycles by means of replacement of the front fork fixing sleeve assembly, the front wheel of the bicycle needs to be detached when the bicycle is installed, the operation is very troublesome, and the bicycle can be reliably installed only by certain disassembly and assembly skills.

Disclosure of Invention

The utility model aims at providing a negative pressure host computer for roof rack, this negative pressure host computer can provide the negative pressure source for the sucking disc of roof rack, can realize the quick grafting of intercommunication pipeline and negative pressure host computer.

Another object of the present invention is to provide a vehicle roof rack for fixing a bicycle back-off to a vehicle roof.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a negative pressure host computer for roof-rack, includes pressure switch, electronic aspiration pump, drive circuit and quick-operation joint, and drive circuit connects and drives the work of electronic aspiration pump, and electronic aspiration pump passes through negative pressure pipeline and quick-operation joint's one end intercommunication, and quick-operation joint's the other end is formed with the interface, and pressure switch is connected with drive circuit, and pressure switch's pressure measurement end connection negative pressure pipeline can be according to the operating condition of the atmospheric pressure control drive circuit of negative pressure pipeline. The negative pressure host computer provides the negative pressure to the sucking disc of roof-rack, the sucking disc of roof-rack passes through the intercommunication pipeline and docks with quick-operation joint during the installation, during operation electronic aspiration pump bleeds and makes the sucking disc form the negative pressure, when the negative pressure of negative pressure pipeline reached a definite value, the electronic aspiration pump stop work of pressure switch control, at this moment the sucking disc firmly adsorbs at the car top surface, and if the sucking disc leaks gas and leads to the negative pressure to reduce, the electronic aspiration pump of pressure switch control begins work, until the negative pressure reaches the default, just so can prevent that the sucking disc from leaking gas and droing, thereby guarantee.

The quick connector is characterized by further comprising a movable insertion pipe matched with the insertion port, the movable insertion pipe can enable the quick connector to be switched on after being inserted into the insertion port, the movable insertion pipe can enable the quick connector to be blocked after being separated from the insertion port, the communicating pipeline is in butt joint with the insertion port of the quick connector through the movable insertion pipe, and the quick connector can be blocked after the movable insertion pipe is separated from the insertion port, so that air leakage is prevented.

The quick connector is internally provided with a valve core and a valve core spring, the valve core can move between an opening position and a closing position, the valve core spring drives the valve core to move to the closing position to block the quick connector, and the movable inserting pipe can push the valve core to move to the opening position to conduct the quick connector.

The quick connector comprises a tubular main body, a locking plate, a locking rod, a locking plate spring and a locking rod spring, wherein the locking plate can be arranged on the tubular main body relative to the insertion port in a vertically moving mode, a locking hole is formed in the locking plate, the locking plate can move downwards to the position, opposite to the insertion port, of the locking hole or move upwards to the position, staggered with the insertion port, of the locking hole, the locking plate spring drives the locking plate to move upwards, the locking rod can be arranged on the tubular main body in a horizontally moving mode, a limiting hole for the locking rod to penetrate through is formed in the locking plate, the limiting hole is provided with a large-diameter hole section and a small-diameter hole section, the large-diameter rod section is matched with the large-diameter hole section, the small-diameter rod section is matched with the small-diameter hole section, the locking rod spring drives the locking rod to move forwards, the locking rod can be pushed by the movable insertion pipe to move backwards to enable the locking plate spring to drive the locking plate to move upwards, and the movable insertion pipe is provided with an annular groove for the locking plate to be embedded into.

The specific plugging mode is as follows: the movable plug pipe penetrates through the lock hole to be inserted into the plug port, the lock rod is pushed to move backwards in the inserting process, the large-diameter rod section is separated from the large-diameter hole section, the small-diameter rod section is opposite to the small-diameter hole section, at the moment, the lock plate is driven by the lock plate spring to move upwards, the lock hole and the plug port are staggered, the lock plate is embedded into the annular groove, the movable plug pipe cannot be pulled out, at the moment, the movable plug pipe pushes the valve core to move to the opening position to enable the quick connector to be connected, when the movable plug pipe needs to be pulled out, the lock plate is pressed to enable the lock plate to move downwards to the position, opposite to the lock hole and the plug port, then the movable plug pipe is pulled out, at the moment, the lock rod moves forwards under the action of the lock rod spring, the large-diameter rod section penetrates through the large-diameter hole section, and therefore the lock plate is limited to move upwards.

The vacuum pump is characterized by further comprising a negative pressure box, the pressure switch, the electric air pump, the driving circuit and the negative pressure pipeline are arranged in the negative pressure box, the quick connector is fixedly arranged on the side wall of the negative pressure box, and the insertion port of the quick connector extends out of the negative pressure box.

And the bottom of the negative pressure box is provided with a sucker, and the bottom of the sucker is communicated with the negative pressure pipeline.

The utility model provides a back-off roof-rack which characterized in that: the negative pressure main machine comprises two handle fixing mechanisms, a seat fixing mechanism and a negative pressure main machine, wherein at least one of the handle fixing mechanisms and the seat fixing mechanism is provided with a sucker used for being fixed on a roof, the quick connector is connected with the sucker through a communicating pipeline and used for providing negative pressure for the sucker, the communicating pipeline passes through the movable inserting pipe and is in butt joint with an inserting port of the quick connector, two handles are fixed by the two handle fixing mechanisms after the bicycle is reversely buckled, the seat is fixed by the seat fixing mechanism, and therefore the reverse buckling of the bicycle is reliably fixed

The handle fixing mechanism comprises a fixing part, a fixing clamping arm, a movable clamping arm and a locking part, the fixing part is provided with a sucker, the fixing clamping arm is fixedly arranged on the fixing part, the movable clamping arm can be rotatably arranged on the fixing clamping arm between a clamping state and an opening state, when the movable clamping arm is in a clamping state, the handlebar can be clamped between the fixing clamping arm and the movable clamping arm, and the locking part is used for keeping the movable clamping arm in the clamping state. The fixed clamping arm and the movable clamping arm can be opened and closed relatively, so that the handlebar is clamped between the fixed clamping arm and the movable clamping arm, the fixed clamping arm and the movable clamping arm are kept in a clamping state through the locking component, the handlebar can be firmly fixed, and the handlebar fixing mechanism is fixed to the roof through the fixing component.

The fixed arm lock with the activity arm lock is the arc structure, fixed arm lock with the activity arm lock rotates at the tip to be connected, when the activity arm lock is in the clamping state, fixed arm lock with the intrados face-to-face of activity arm lock arranges, and the pipe fitting of handlebar hand can be fixed better to the fixed arm lock of arc structure and activity arm lock, makes the pipe fitting be difficult to the lateral slip after fixed.

The fixed arm lock with the one side that activity arm lock contacted handlebar hand is provided with the elastic buffer layer, and the elastic buffer layer can play the cushioning effect, prevents to damage handlebar hand to the elastic buffer layer also can play anti-skidding effect, prevents that handlebar hand from fixing the back and sliding.

The locking part comprises a binding band and a locking component, the locking component is arranged on the movable clamping arm, one end of the binding band is fixed on the fixed clamping arm, the other end of the binding band can penetrate through the locking component, the locking component can bind the binding band to enable the movable clamping arm to be kept in a clamping state, and the binding band and the locking component are matched to clamp and fix the fixed clamping arm and the movable clamping arm.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of an inverted roof rack.

Fig. 2 is a perspective view of the handle fixing mechanism.

Fig. 3 is a partial cross-sectional view of the handle securing mechanism.

Fig. 4 is an exploded view of the handle securing mechanism.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6 is a perspective view of the negative pressure main unit.

Fig. 7 is an internal structure diagram of the negative pressure main machine.

Fig. 8 is an exploded view of the quick connector and the movable insertion tube.

Fig. 9 is a sectional view of the quick coupling and the movable connection tube after connection.

Fig. 10 is a schematic structural view of the lock plate.

Fig. 11 is a schematic view of the lock lever.

Fig. 12 is a perspective view of the seat fixing mechanism.

Fig. 13 is a partial cross-sectional view of the seat attachment mechanism.

Detailed Description

Referring to fig. 1 to 13, an inverted roof rack comprises two handle fixing mechanisms 2, a cushion fixing mechanism 3 and a negative pressure main machine 1, and the inverted roof rack is fixed on the roof in the arrangement manner shown in fig. 1.

Referring to fig. 2 to 5 in detail, the handle fixing mechanism 2 includes a suction cup 21, a support 22, a fixed clamp arm 241, a movable clamp arm 242 and a locking component 25, the support 22 is fixedly disposed on the top of the suction cup 21 through a bolt 221, a receiving groove is formed on the bottom surface of the support 22, the receiving groove and the top surface of the suction cup 21 enclose a receiving space, as shown in detail in fig. 4, a one-way valve 235, a three-way pipe 236 and a connecting pipe 237 are disposed in the receiving space, a quick coupling 231 and a fixed insertion pipe 232 are disposed on the side wall of the support 22, one end of the quick coupling 231 is disposed in the receiving space, the other end of the quick coupling extends out of the support 22, the specific quick coupling 231 passes through the side wall of the support 22 and is fixed by a nut 233, the fixed insertion pipe 232 passes through the side wall of the support 22 and is fixed by a nut 234, a socket 211 communicated with the bottom is formed on the top surface of the suction cup 21, one end of the one-way valve 235 is inserted into the socket 211, and the other end of the quick coupling 231 and the fixed insertion pipe 237 are respectively connected with the three-way pipe 236 and the connecting pipe 237.

The one-way valve 235, the three-way pipe 236, the connecting pipe 237, the quick coupling 231 and the fixed insertion pipe 232 form the negative pressure docking assembly 23.

Referring to fig. 3 in detail, the fixed arm 241 is an arc structure, the fixed arm 241 includes a metal body 241a and an elastic buffer 241b covering the metal body 241a, the movable arm 242 is also an arc structure, the movable arm 242 also includes a metal body 242a and an elastic buffer 242b covering the metal body 242a, the elastic buffers 241b, 242b are made of rubber or silicone, one ends of the fixed arm 241 and the movable arm 242 are hinged to each other through a pivot 243, so that the fixed arm 241 and the movable arm 242 can open and close relatively, the fixed arm 241 is fixedly connected to the top of the support 22 through a bolt 2411, and the inner arc surface of the fixed arm 241 faces upward, the movable arm 242 can rotate between the clamping state and the opening state, when the movable arm 242 is in the clamping state, the inner arc surfaces of the fixed arm 241 and the movable arm 242 are arranged relatively, the cart handle can be disposed between the fixed arm 241 and the movable arm 242, the fixed arm 241 and the movable arm 242 of the arc structure can better fix the tube of the cart handle, so that the tube can slide laterally after being fixed, the elastic buffers 241b, 242 can not easily play a role in buffering role, and can also prevent the cart handle from sliding and can also be clamped.

Referring to fig. 5 in detail, the locking member 25 is used for holding the movable clamp arm 242 in a clamped state, the locking member 25 includes a strap 251 and a locking component, the locking component is disposed on the outer arc surface of the movable clamp arm 242, one end of the strap 251 is fixed to the other end of the fixed clamp arm 241 far away from the hinged end through a bolt 2511, the other end of the strap 251 can pass through the locking component, the locking component can bind the strap 251 to hold the movable clamp arm 242 in the clamped state, and the fixed clamp arm 241 and the movable clamp arm 242 are clamped and fixed through cooperation of the strap 251 and the locking component.

The locking assembly includes a mounting seat 252, a locking buckle 257, a first elastic member 254, an operating handle 258 and a second elastic member 256, the mounting seat 252 is fixedly disposed on an outer arc surface of the movable clamping arm 242 through a bolt 2522, the locking buckle 257 is rotatably disposed on the mounting seat 252 through a first rotating shaft 253, the locking buckle 257 is rotatable between a locking state and a releasing state, the first elastic member 254 is a torsion spring fitted around the first rotating shaft for urging the locking buckle 257 to be maintained in the locking state, the binding belt 251 is formed with a plurality of ratchet teeth 2512 arranged along a length direction thereof, the locking buckle 257 is formed with a pawl 2572 and a pressed portion 2571 which are engaged with the ratchet teeth 2512 when the locking buckle 257 is in the locking state, the binding belt 251 passes through the mounting seat 252 and can only be pulled in a tightening direction, the pressing plate 2521 pressed on top surfaces on both sides of the binding belt 251 is formed on the mounting seat 252, when the locking buckle 257 is pressed to the releasing state, the binding belt 251 can be pulled in a loosening direction, the locking buckle 257 and the movable clamping arm 251 can be pulled more firmly pressed by the locking buckle 251 and the movable clamping arm 251 can be rotated to the locking buckle 242 when the locking buckle is released, and the movable clamping arm 251 can be rotated to be released, and the movable clamping arm 242.

The operating handle 258 is rotatably arranged on the mounting seat 252 through the second rotating shaft 255, the operating handle 258 is provided with a shifting portion 2581 capable of shifting the ratchet 2512, the operating handle 258 can be operated to enable the shifting portion 2581 to push the ratchet 2512 on the binding band 251 to move in the tightening direction, the second elastic element 256 is a torsion spring sleeved on the second rotating shaft 255, the torsion spring drives the operating handle 258 to rotate to a folded state that the shifting portion 2581 is far away from the ratchet 2512, the operating handle 258 and the second rotating shaft 255 form a labor-saving lever, when the binding band 251 is difficult to pull, the operating handle 258 can be used for pushing the ratchet 2512 on the binding band 251 to enable the binding band 251 to move in the tightening direction, the first rotating shaft 253 and the second rotating shaft 255 are parallel to each other and are arranged along the length direction of the mounting seat 252, and the binding band 251 passes through the first rotating shaft 253, the second rotating shaft 255 and the mounting seat 252.

Referring to fig. 12 and 13 in detail, the seat fixing mechanism 3 includes a suction cup 31, a seat cushion 32 and a binding belt 33, one end of the binding belt 33 is connected to one side of the seat cushion 32, the other end of the binding belt 33 is connected to the other side of the seat cushion 32, when the seat cushion is installed, the front section of the seat passes through the binding belt 33 and is supported on the top of the seat cushion 32, the seat cannot be separated from the seat cushion due to the binding belt 33, so that the seat can be fixed after the bicycle is turned upside down, the binding belt 33 is made of an elastic material, and the elastic binding belt 33 can better bind the front section of the seat, so that the seat can be fixed more stably.

Cushion 32 top is formed with the arc concave surface A with seat looks adaptation, and the anterior segment of seat just is placed in arc concave surface A and is bound by constraint area 33 behind the bicycle back-off, can fix the seat better, and the top of cushion 32 is provided with elastic buffer layer 321, and elastic buffer layer 321 can protect the seat, prevents seat wearing and tearing, and this elastic buffer layer 321 adopts rubber or silica gel material, and arc concave surface A forms the top surface at elastic buffer layer 321.

The cushion 32 is provided with a connecting rod 34 transversely penetrating through, two ends of the connecting rod 34 are provided with two limiting parts 35, two ends of the restraining belt 33 are provided with a plurality of limiting holes 331 arranged along the length direction of the restraining belt, two ends of the connecting rod 34 are provided with external threads, the limiting parts 35 are provided with screw holes matched with the external threads, the limiting parts 35 are provided with limiting heads larger than the limiting holes 331, two ends of the connecting rod 34 penetrate through the limiting holes 331 at two ends of the restraining belt 33 and are limited by the limiting heads to be separated from the limiting holes 331, the restraining belt 33 is connected with the connecting rod 34 through the limiting holes 331 and is fixed through the limiting heads, so that the restraining belt 33 can rotate around the connecting rod 34, the restraining position of the relative seat is well adjusted, the limiting parts 35 are detachably connected with the connecting rod 34, and the limiting holes 331 matched with the connecting rod 34 are conveniently replaced to adjust the action length of the restraining belt 33.

The bottom of cushion 32 is provided with sucking disc 31, can conveniently realize the fixed of cushion 32 through sucking disc 31, the bottom surface of cushion 32 is formed with and holds recess 322, it encloses into accommodation space with sucking disc 31 top surface to hold recess 322, be provided with the check valve in the accommodation space, the three-way pipe, the connecting tube, cushion 32 lateral wall is provided with quick-operation joint and fixed grafting pipe, the check valve, the three-way pipe, the connecting tube, quick-operation joint 36 and fixed grafting pipe 37 constitute the negative pressure butt joint subassembly, the structure of this negative pressure butt joint subassembly is the same with negative pressure butt joint subassembly 23 in the handle fixing base 2, no longer describe in detail here.

Referring to fig. 6 to 11 in detail, the negative pressure main unit 1 includes a negative pressure box 12, a suction cup 11, a pressure switch 16, an electric air pump 15, a driving circuit, and a quick coupling 13, wherein the negative pressure box 12 is a square box provided with a top cover 121, and the suction cup 11 is fixedly disposed at the bottom of the negative pressure box 12.

The driving circuit is connected with and drives the electric air pump 15 to work, the electric air pump 15 is driven by the motor 151, the driving circuit controls the working state of the motor 151, the electric air pump 15 is communicated with one end of the quick coupling 13 through the negative pressure pipeline 18, a plug port 1331 is formed at the other end of the quick coupling 13, the pressure switch 16 is connected with the driving circuit, the pressure measuring end of the pressure switch 16 is connected with the negative pressure pipeline 18, the working state of the driving circuit can be controlled according to the air pressure of the negative pressure pipeline 18, the pressure switch 16, the electric air pump 15, the driving circuit and the negative pressure pipeline 18 are arranged in the negative pressure box 12, the quick coupling 13 is fixedly arranged on the side wall of the negative pressure box 12 through a nut 131, the plug port 1331 of the quick coupling 13 extends out of the negative pressure box 12, and the suction cup 11 is communicated with the negative pressure pipeline 18 through a one-way valve.

The negative pressure connection mode of the back-off roof rack is as follows: the negative pressure main machine 1 is provided with two quick connectors 13, one quick connector 13 is in butt joint with a fixed inserting pipe 37 on the seat fixing mechanism 3 through a communicating pipe 41, the other quick connector 13 is in butt joint with a fixed inserting pipe 232 of a handle fixing mechanism 2 through a connecting channel 42, a quick connector 231 of the handle fixing mechanism 2 is in butt joint with the fixed inserting pipe 232 of the other handle fixing mechanism 2 through a communicating pipe 43, and the communicating pipes 41, 42 and 43 are in butt joint with the quick connectors 13 through movable inserting pipes 14.

The quick coupling 231 of the handle fixing mechanism 2, the quick coupling 36 of the seat fixing mechanism 3, and the quick coupling 13 of the vacuum main unit 1 have the same structure, and the quick coupling 13 of the vacuum main unit 1 is taken as an example for description: the movable insertion tube 14 comprises an insertion section 141, a pressure ring section 142 and an insertion section 143 which are connected in sequence, the insertion section 141 can be inserted into the insertion port 1331, a sealing ring 144 far away from the pressure ring section 142 and an annular groove 1411 close to the pressure ring section 142 are arranged on the insertion section 141, the insertion section 143 is used for being inserted into the communication pipeline, the insertion section 141 of the movable insertion tube 14 can be inserted into the insertion port 1331 to enable the quick connector 13 to be conducted, and the movable insertion tube 14 can be separated from the insertion port 1331 to enable the quick connector 13 to be blocked.

The quick connector 13 is provided with a valve core 138 and a valve core spring 1382, the valve core 138 can move between an opening position and a closing position, the valve core spring 1382 drives the valve core 138 to move to the closing position to block the quick connector 13, the movable insertion pipe 14 can push the valve core 138 to move to the opening position to conduct the quick connector 13, the valve core 138 is of a tubular structure with one closed end and the other end provided with a limiting ring, a communication hole 1332 for the valve core 138 to penetrate through is formed in the tubular main body 133, the communication hole 1332 is larger than the diameter of the valve core 138, the side wall of the valve core 138 starts to be provided with a long hole 1383 extending along the length direction of the valve core 138, the closed end of the valve core 138 is provided with a sealing ring 1381, the diameter of the sealing ring 1381 is larger than the diameter of the communication hole 1332, when the valve core 138 moves to the closing position, the sealing ring 1381 closes the communication hole 1332, when the valve core 138 moves to the opening position, the valve core 1381 is far away from the communication hole 133, meanwhile, the long hole 1383 communicates the tubular main body 133 on two sides of the communication hole on the two sides of the communication hole 1382, and the valve core 1382 is sleeved on the valve core 138 and compressed between the limiting ring and the tubular main body 1332.

The quick connector 13 comprises a tubular main body 133, a lock plate 134, a lock rod 137, a lock plate spring 1343 and a lock rod spring 1373, wherein the lock plate 134 is arranged on the tubular main body 133 in a manner that the lock plate 134 can move up and down relative to the insertion opening 1331, the tubular main body 133 is provided with a sliding chute 1332 for mounting the lock plate 134, the lock plate 134 is provided with a lock hole 1341, the lock plate 134 can move down to a position where the lock hole 1341 is opposite to the insertion opening 1331 or move up to a position where the lock hole 1341 is dislocated with the insertion opening 1331, the lock plate spring 1343 drives the lock plate 134 to move up, the top of the specific lock plate 134 is bent to form a pressing plate 1342, the lock plate spring 1343 is arranged between the pressing plate 1342 and the top of the tubular main body 133, the lock rod 137 is arranged on the front end surface of the tubular main body 133 in a manner that the lock rod can move back and forth, the front end face of the tubular main body is provided with a mounting hole for mounting the locking rod 137, a locking rod spring 1373 is arranged in the mounting hole, the locking rod spring 1373 is compressed between the rear end of the locking rod 137 and the mounting hole, a limiting hole for the locking rod 137 to pass through is formed on the locking plate 134, the limiting hole is provided with a large-diameter hole section a and a small-diameter hole section b which are arranged up and down, the locking rod 137 comprises a main body section 1373, a large-diameter rod section 1372, a small-diameter rod section 1371 and a protruding section 1374 which are connected in sequence, the large-diameter rod section 1372 is matched with the large-diameter hole section a, the small-diameter rod section 1371 is matched with the small-diameter hole section b, the main body section 1373 is larger than the large-diameter hole section a, and the main body section 1373 cannot pass through the large-diameter hole section a to limit the locking rod 137 to be separated from the mounting hole; the locking rod spring 1373 drives the locking rod 137 to move forward, the locking rod 137 can be pushed by the movable insertion tube 14 to move backward, the locking plate spring 1343 can drive the locking plate 134 to move upward, and the movable insertion tube 14 is formed with an annular groove 1411 for the upward moving locking plate 134 to be embedded in.

The specific insertion mode is as follows: the inserting section 141 of the movable inserting tube 14 passes through the lock hole 1341 and is inserted into the inserting port 1331, the pressure ring section 142 pushes the lock rod 137 to move backward during the inserting process, so that the large diameter rod section 1372 is separated from the large diameter hole section a, the small diameter rod section 1371 is opposite to the small diameter hole section b, at this time, the lock plate spring 1343 drives the lock plate 134 to move upward, so that the lock hole 1341 is dislocated with the inserting port 1331, the lock plate 134 is embedded into the annular groove 1411, so that the movable inserting tube 14 cannot be pulled out, at this time, the movable inserting tube 14 pushes the valve core 138 to move to the opening position to conduct the quick connector 13, when the movable inserting tube 14 needs to be pulled out, the pressing plate 1342 at the top of the lock plate 134 is pressed, so that the lock plate 134 moves downward to the position where the lock hole 1341 is opposite to the inserting port 1331, and then the movable inserting tube 14 is pulled out, at this time, the lock rod 137 moves forward under the action of the lock rod spring 1373, so that the large diameter rod section 1372 passes through the large diameter hole section a, thereby limiting the upward movement of the lock plate 134.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is to be construed as being modified and modified in accordance with the appended claims and their equivalents.

Claims (11)

1. The utility model provides a negative pressure host computer for roof-rack which characterized in that: including pressure switch, electronic aspiration pump, drive circuit and quick-operation joint, drive circuit connects and drives electronic aspiration pump work, and electronic aspiration pump passes through negative pressure pipeline and quick-operation joint's one end intercommunication, and quick-operation joint's the other end is formed with the interface, and pressure switch is connected with drive circuit, and pressure switch's pressure measurement end connection negative pressure pipeline can be according to the operating condition of the atmospheric pressure control drive circuit of negative pressure pipeline.

2. The negative pressure main machine for the roof rack of the vehicle as claimed in claim 1, wherein: the quick connector is characterized by further comprising a movable insertion pipe matched with the insertion port, the quick connector can be conducted after the movable insertion pipe is inserted into the insertion port, and the quick connector can be blocked after the movable insertion pipe is separated from the insertion port.

3. The negative pressure main machine for the roof rack as claimed in claim 2, wherein: the quick connector is internally provided with a valve core and a valve core spring, the valve core can move between an opening position and a closing position, the valve core spring drives the valve core to move to the closing position to block the quick connector, and the movable inserting pipe can push the valve core to move to the opening position to conduct the quick connector.

4. The negative pressure main machine for the roof rack as claimed in claim 2, wherein: the quick connector comprises a tubular main body, a locking plate, a locking rod, a locking plate spring and a locking rod spring, wherein the locking plate can be arranged on the tubular main body relative to the insertion port in a vertically moving mode, a locking hole is formed in the locking plate, the locking plate can move downwards to the position, opposite to the insertion port, of the locking hole or move upwards to the position, staggered with the insertion port, of the locking hole, the locking plate spring drives the locking plate to move upwards, the locking rod can be arranged on the tubular main body in a horizontally moving mode, a limiting hole for the locking rod to penetrate through is formed in the locking plate, the limiting hole is provided with a large-diameter hole section and a small-diameter hole section, the large-diameter rod section is matched with the large-diameter hole section, the small-diameter rod section is matched with the small-diameter hole section, the locking rod spring drives the locking rod to move forwards, the locking rod can be pushed by the movable insertion pipe to move backwards to enable the locking plate spring to drive the locking plate to move upwards, and the movable insertion pipe is provided with an annular groove for the locking plate to be embedded into.

5. The negative pressure main machine for the roof rack as claimed in any one of claims 1 to 4, wherein: the vacuum pump is characterized by further comprising a negative pressure box, the pressure switch, the electric air pump, the driving circuit and the negative pressure pipeline are arranged in the negative pressure box, the quick connector is fixedly arranged on the side wall of the negative pressure box, and the insertion port of the quick connector extends out of the negative pressure box.

6. The negative pressure main machine for the roof rack as claimed in claim 5, wherein: and the bottom of the negative pressure box is provided with a sucker, and the bottom of the sucker is communicated with the negative pressure pipeline.

7. The utility model provides a back-off roof-rack which characterized in that: the negative pressure main machine comprises two handle fixing mechanisms, a seat fixing mechanism and the negative pressure main machine according to any one of claims 2 to 4, wherein at least one of the handle fixing mechanism and the seat fixing mechanism is provided with a sucker for being fixed on a vehicle roof, the quick connector is connected with the sucker through a communication pipeline for providing negative pressure for the sucker, and the communication pipeline is in butt joint with a plug port of the quick connector through the movable plug pipe.

8. The inverted roof rack as set forth in claim 7, wherein: the handle fixing mechanism comprises a fixing part, a fixing clamping arm, a movable clamping arm and a locking part, the fixing part is provided with a sucker, the fixing clamping arm is fixedly arranged on the fixing part, the movable clamping arm can be rotatably arranged on the fixing clamping arm between a clamping state and an opening state, when the movable clamping arm is in a clamping state, the handlebar can be clamped between the fixing clamping arm and the movable clamping arm, and the locking part is used for keeping the movable clamping arm in the clamping state.

9. The inverted roof rack as set forth in claim 8, wherein: the fixed clamping arm and the movable clamping arm are of arc structures and are connected at the end in a rotating mode, and when the movable clamping arm is in a clamping state, the inner arc surfaces of the fixed clamping arm and the movable clamping arm are arranged oppositely.

10. The inverted roof rack as set forth in claim 8, wherein: and one surfaces of the fixed clamping arm and the movable clamping arm, which are contacted with the handlebar, are provided with elastic buffer layers.

11. The inverted roof rack of claim 8, wherein: the locking component comprises a bandage and a locking component, the locking component is arranged on the movable clamping arm, one end of the bandage is fixed on the fixed clamping arm, the other end of the bandage can penetrate through the locking component, and the locking component can bind the bandage to enable the movable clamping arm to be kept in a clamping state.

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